阅读说明：本技术 一种双向启闭门轴 (Bidirectional opening and closing door shaft ) 是由 伍肇坚 于 2020-09-22 设计创作，主要内容包括：本发明提供了一种双向启闭门轴,包括：外套管、第一盖部、第二盖部、输出轴、滑槽柱、中心轴、复位弹簧等,滑槽柱上设置有相对的上下交错设置的第一滑槽与第二滑槽,第一滑槽与第二滑槽的形状皆为V型,第一驱动轴伸入第一滑槽,第二驱动轴伸入第二滑槽,滑槽柱的筒底延伸出输出轴,输出轴从第二盖部的内腔伸出,输出轴及滑槽柱与第二盖部活动连接,输出轴及滑槽柱在外套管的管腔内仅作周向运动,弹簧挡部固定嵌装于中心轴的中段上。使用本发明提供的技术方案,门扇与门框的缝隙防止小孩手插进去夹手受伤,由于有加强定位功能,门扇打开及关闭停留角度更精准。(The invention provides a bidirectional opening and closing door shaft, comprising: the outer tube, first cap, the second cap, the output shaft, the spout post, the center pin, reset spring etc, be provided with relative first spout and the second spout that staggers up and down and set up on the spout post, the shape of first spout and second spout all is the V type, first spout is stretched into to first drive shaft, the second spout is stretched into to the second drive shaft, the output shaft is extended at the barrel head of spout post, the output shaft stretches out from the inner chamber of second cap, output shaft and spout post and second cap swing joint, output shaft and spout post only do circumferential motion in the lumen of outer tube, spring fender portion is fixed to be inlayed and is located on the middle section of center pin. By using the technical scheme provided by the invention, the gap between the door leaf and the door frame prevents hands of children from being injured when the hands are inserted into the gap, and the door leaf opening and closing stop angles are more accurate due to the enhanced positioning function.)

1. A bidirectional opening and closing door shaft is characterized by comprising: the outer sleeve comprises an outer sleeve (6), a first cover part, a second cover part, an output shaft (1203), a sliding groove column (12), a central shaft (9), a reset spring (7) and a spring blocking part, wherein a flange is arranged at one end of the outer sleeve (6), a flange mounting hole (601) is arranged on the flange, the second cover part is arranged in a pipe cavity of the outer sleeve (6) close to the flange mounting hole (601), the first cover part is arranged in a pipe cavity of the other end of the outer sleeve (6), the outer sleeve (6) is fixedly connected with the first cover part and the second cover part, a first end part (9001) of the central shaft (9) extends into an inner cavity of the first cover part, the central shaft (9) and the first cover part form a matching structure of axial sliding connection and synchronous rotation, and a second end part (9002) of the central shaft (9) extends into an inner cavity of the sliding groove column (12), the second end portion (9002) is provided with a first driving shaft (901) and a second driving shaft (902) which are opposite and staggered up and down, the sliding groove column is provided with a first sliding groove (1201) and a second sliding groove (1202) which are opposite and staggered up and down, the first sliding groove (1201) and the second sliding groove (1202) are both V-shaped, the first driving shaft (901) extends into the first sliding groove (1201), the second driving shaft (902) extends into the second sliding groove (1202), the cylinder bottom of the sliding groove column (12) extends out of the output shaft (1203), the output shaft (1203) extends out of the inner cavity of the second cover portion, the output shaft (1203) and the sliding groove column (12) are movably connected with the second cover portion, the output shaft (1203) and the sliding groove column (12) only do circumferential motion in the tube cavity of the outer sleeve (6), and the spring blocking portion is fixed in the middle section of the central shaft (9), the assembly mode of the return spring (7) is that the return spring (7) is sleeved on the shaft body of the central shaft (9) between the upper end surface of the spring blocking part and the inner end surface of a component which does not do axial movement above the spring blocking part;

when the output shaft (1203) and the chute column (12) do circumferential motion in the lumen of the outer sleeve (6), the first driving shaft (901) slides in the first chute (1201) and slides from the lowest part of the V shape to the highest part of the V shape, and the second driving shaft (902) slides in the second chute (1202) and slides from the lowest part of the V shape to the highest part of the V shape, the spring stop portion does axial motion and compresses the return spring (7).

2. The door spindle with the two-way opening and closing function as claimed in claim 1, wherein the inner cavity of the outer sleeve (6) is further provided with a reinforced positioning mechanism, the second cover part is a second cover (14), the reinforced positioning mechanism comprises a second cover (14), a positioning sleeve (20), a positioning ball (15) and a positioning spring (16), the second cover (14) is integrally annular with two ends inwards concave and a hollow step surface in the middle, a plurality of positioning holes (1401) are arranged on the hollow step surface, the positioning sleeve (20) is integrally annular and fixedly sleeved on the middle section of the output shaft (1203), the positioning sleeve (20) is respectively provided with a through hole (2001) corresponding to the positioning hole (1401), the positioning ball (15) and the positioning spring (16) are vertically arranged in the through holes, and the positioning ball (15) can be pushed into the positioning hole (1401) by the positioning spring (16), the output shaft (1203) penetrates through the second sealing cover (14) and the positioning sleeve (20).

3. A bi-directional opening and closing door spindle according to claim 2, characterized in that a plurality of steel balls (13) are arranged between the outer end face of the chute column (12) facing the output shaft (1203) and the inner end face of the second cover (14) facing the chute column (12).

4. A bi-directional opening and closing door spindle as claimed in claim 2, characterized in that a set screw (19) for synchronously connecting the positioning sleeve (20) with the movement of the output shaft (1203) is provided at a position of the positioning sleeve (20) perpendicular to the axis.

5. A bi-directional opening and closing door shaft as claimed in claim 2, characterized in that after passing through said positioning sleeve (20), said output shaft (1203) sequentially passes through a rolling bearing 18 and a retainer ring 17, and said rolling bearing 18 is disposed between a bearing outer ring 1801 and a bearing inner ring 1802.

6. The bidirectional opening and closing door shaft as recited in claim 2, characterized in that after the output shaft (1203) passes through the positioning sleeve (20), the output shaft sequentially passes through a rolling bearing 18 and a retainer ring 17, the rolling bearing 18 is arranged between a bearing outer ring 1801 and a bearing inner ring 1802, and the bearing inner ring is fixedly connected with the output shaft (1203).

7. A bi-directional opening and closing door spindle according to claim 2, characterized in that the V-shaped highest point of the first runner (1201) and the V-shaped highest point of the second runner (1202) are each provided with a horizontal groove section parallel to the end surface of the runner post (12), said horizontal groove section comprising a concave groove section arranged opposite to the end surface of the runner post.

8. A bidirectional opening and closing door shaft as defined in any one of claims 2 to 7, wherein the shaft bodies of said first driving shaft (901) and said second driving shaft (902) are respectively sleeved with a sliding sleeve (10).

9. A bidirectional opening and closing door shaft as recited in any one of claims 2 to 7, characterized in that said first cover portion is a shaft sleeve (5), the inner wall of said shaft sleeve (5) is provided with spline grooves, said first end portion (9001) extending into the inner cavity of said shaft sleeve (5) is provided with a spline shaft, said central shaft (9) and said shaft sleeve (5) form an axial sliding connection and synchronous rotation engagement structure, and said central shaft (9) and said shaft sleeve (5) realize axial sliding connection and synchronous rotation through the engagement of said spline shaft and said spline grooves.

10. A bi-directional opening and closing door spindle according to any one of claims 2 to 7, characterized in that the inner cavity of the outer sleeve (6) between the inner end surface of the first cover part and the inner end surface of the chute column (12) is provided with a hydraulic damping mechanism.

11. A bi-directional opening and closing door spindle according to claim 10, characterized in that the hydraulic damping mechanism comprises the spring stop, which is a piston (8).

12. A bi-directional opening and closing door spindle according to claim 11, characterized in that when the return spring (7) is assembled in a manner specified by: when the return spring (7) is sleeved on the shaft body of the central shaft (9) between the upper end surface of the piston (8) and the inner end surface of the first cover part, a space between the upper end surface of the piston (8) and the inner end surface of the first cover part is an oil storage cavity (24), and a space between the lower end surface of the piston (8) and the inner end surface of the chute column (12) is a pressure oil cavity (23).

13. A bi-directional opening and closing door spindle according to claim 12, characterized in that a stop ring (17) is arranged between the return spring (7) and the upper end face of the piston (8).

14. A two-way opening and closing door spindle according to claim 13, characterized in that a sealing ring (21) is arranged between the outer wall of the first cover part and the inner wall of the outer sleeve (6), a sealing ring (21) is arranged between the outer wall of the piston (8) and the inner wall of the outer sleeve (6), a sealing ring (21) is arranged between the inner wall of the second cover (14) and the outer wall of the output shaft (1203), and a sealing ring (21) is arranged between the outer wall of the second cover (14) and the inner wall of the outer sleeve (6).

15. A bi-directional opening and closing door spindle according to any one of claims 12, 13 and 14, characterized in that said piston (8) is a piston with a non-return valve (22).

16. A bi-directional door closer according to any of claims 12, 13 and 14, wherein a magnet (25) is provided at the bottom of the inner wall of the chute column (12).

17. A bi-directional door closer as claimed in any one of claims 12, 13 and 14, wherein said bi-directional door closer is further provided with a hydraulic oil flow control mechanism.

18. The bidirectional opening and closing door shaft as claimed in claim 17, wherein the hydraulic oil flow control mechanism has a specific structure: follow the outer terminal surface of first end (9001) is followed pore (903) are seted up at its axle body to the axis of center pin (9) set up oil gallery (904) on the axle body of center pin (9), oil gallery (904) with pore (903) communicate with each other place speed governing oil needle (4) from last to down in the pore, first lid first closing cap (3) of outside tip spiral shell dress, the central through-hole spiral shell dress speed governing screw (2) of first closing cap (3), the one end of speed governing screw (2) is inlayed and is adorned speed governing oil needle (4), the other end of speed governing screw (2) stretches out outside first closing cap up end and adorns regulating wheel (1) admittedly, center pin (9) with leave the gap as the oil circuit between the two of first lid.

19. The bidirectional opening and closing door shaft as claimed in claim 17, wherein the hydraulic oil flow control mechanism has a specific structure: follow the outer terminal surface of first end (9001) is followed pore (903) are seted up at its axle body to the axis of center pin (9) set up oil gallery (904) on the axle body of center pin (9), oil gallery (904) with pore (903) communicate with each other place speed governing oil needle (4) from last to down in the pore, first lid outside tip spiral shell dress first closing cap (3), the central through-hole spiral shell dress speed governing screw (2) of first closing cap (3), the one end of speed governing screw (2) is inlayed and is adorned speed governing oil needle (4), the other end of speed governing screw (2) is stretched out outside first closing cap up end and adorns regulating wheel (1) admittedly, set up the through-hole between the up end of first lid and the interior terminal surface and regarded as the oil circuit.

20. A bi-directional opening and closing door spindle according to claim 18 or 19, characterized in that said oil return hole (904) is located on the shaft body of the central shaft (9) between the lower end surface of said piston (8) and the inner end surface of said chute column (12), or,

the oil return hole (904) is arranged on the outer end face of the second end portion (9002) and communicated with the pore passage (903) along the axis of the central shaft (9).

21. A bidirectional opening and closing door shaft as claimed in claim 18 or 19, characterized in that said speed-regulating oil needle (4) exhibits a diameter reduction.

22. A two-way opening and closing door spindle according to claim 18 or 19, characterised in that a sealing ring (21) is arranged between the inner wall of the first cover (3) and the outer wall of the speed regulating screw (2), and a sealing ring (21) is arranged between the outer wall of the first cover and the inner wall of the first cover part.

23. A bi-directional opening and closing door spindle according to claim 11, characterized in that when the return spring (7) is assembled in a manner specified by: when the return spring (7) is sleeved on the shaft body of the central shaft (9) between the upper end surface of the piston (8) and the inner end surface of the chute column (12), a space between the upper end surface of the piston (8) and the inner end surface of the chute column (12) is an oil storage cavity (24), and a space between the lower end surface of the piston (8) and the inner end surface of the first cover part is a pressure oil cavity (23).

24. A bi-directional opening and closing door spindle according to claim 23, characterized in that a plane bearing (26) is arranged between the upper end surface of the return spring (7) and the inner end surface of the chute column (12).

25. A two-way opening and closing door spindle according to claim 25, characterized in that a sealing ring (21) is arranged between the outer wall of the first cover part and the inner wall of the outer sleeve (6), a sealing ring (21) is arranged between the outer wall of the piston (8) and the inner wall of the outer sleeve (6), a sealing ring (21) is arranged between the inner wall of the second cover (14) and the outer wall of the output shaft (1203), and a sealing ring (21) is arranged between the outer wall of the second cover (14) and the inner wall of the outer sleeve (6).

26. A bi-directional opening and closing door spindle according to any one of claims 23, 24 and 25, characterized in that said piston (8) is a piston with a one-way valve (22).

27. A bi-directional door closer according to any of claims 23, 24 and 25, wherein a magnet (25) is provided on the inner end surface of the first cover portion.

28. A bi-directional door closer as claimed in any one of claims 23, 24 and 25, wherein said bi-directional door closer is further provided with hydraulic oil flow control means.

29. The bidirectional opening and closing door shaft as claimed in claim 28, wherein the hydraulic oil flow control mechanism has a specific structure: follow the outer terminal surface of first end (9001) is followed pore (903) are seted up at its axle body to the axis of center pin (9) set up oil gallery (904) on the axle body of center pin (9), oil gallery (904) with pore (903) communicate with each other from supreme speed governing oil needle (4) of placing down in pore (903), first closing cap (3) of the outside tip spiral shell dress of first lid, central through-hole spiral shell dress speed governing screw (2) of first closing cap (3), the one end of speed governing screw (2) is inlayed and is adorned speed governing oil needle (4), the other end of speed governing screw (2) stretches out outside the first closing cap up end and adorns regulating wheel (1) admittedly, center pin (9) with leave the gap as the oil circuit between the two in the first lid.

30. The bidirectional opening and closing door shaft as claimed in claim 28, wherein the hydraulic oil flow control mechanism has a specific structure: follow the outer terminal surface of first end (9001) is followed pore (903) are seted up at its axle body to the axis of center pin (9) set up oil gallery (904) on the axle body of center pin (9), oil gallery (904) with pore (903) communicate with each other from supreme speed governing oil needle (4) of placing down in pore (903), first lid outside tip spiral shell dress first closing cap (3), the central through-hole spiral shell of first closing cap (3) speed governing screw (2), the one end of speed governing screw (2) is inlayed and is adorned speed governing oil needle (4), the other end of speed governing screw (2) stretches out outside the first closing cap up end and adorns regulating wheel (1) admittedly, set up the through-hole as the oil circuit between the up end of first lid and the interior terminal surface.

31. A bi-directional opening and closing door spindle according to claim 29 or 30, characterized in that said oil return hole (904) is located on the shaft body of the central shaft (9) between the upper end surface of said piston (8) and the inner end surface of said chute column (12), or,

the oil return hole (904) is arranged on the outer end face of the second end portion (9002) and communicated with the pore passage (903) along the axis of the central shaft (9).

32. A bidirectional opening and closing door shaft as claimed in claim 29 or 30, characterized in that said speed-regulating oil needle (4) exhibits a diameter reduction.

33. A bi-directional opening and closing door spindle according to claim 29 or 30, characterized in that a sealing ring (21) is arranged between the inner wall of the first cover (3) and the outer wall of the speed adjusting screw (2), and a sealing ring (21) is arranged between the outer wall of the first cover and the inner wall of the first cover part.

Technical Field

The invention relates to the field of door and window hardware accessories, in particular to a door shaft.

Background

The automatic buffering door closer has the advantages that the types of products for automatic buffering door closing in the current market are more, door shaft products opened in two directions mainly comprise floor springs, the floor springs are extremely inconvenient to dig and bury in the ground during installation, floor digging is troublesome to destroy when floors are used, the biggest defect of the floor springs is that potential safety hazards of floor penetrating exist, the distance between the centers of output shafts of the floor springs and a door frame is longer, gaps between door leaves and the door frame are larger after the door leaves are opened, hands of children easily stretch into the door leaves, hands of the door leaves are easy to hurt in the automatic closing process, the other product is an automatic closing door shaft, the gaps between the door leaves and the door frame are unchanged and safer when the door leaves are opened and closed, and the door leaf can be opened only in a single direction and is not suitable for public occasions. In addition, the door shaft capable of being opened and closed in two directions is also provided, and due to the fact that the positioning function is not provided, the door leaf is easy to be opened by blowing in the using process, and the various reasons cause that a user is extremely inconvenient in use.

Disclosure of Invention

The embodiment of the invention provides a bidirectional opening and closing door shaft, and by using the technical scheme provided by the embodiment, the bidirectional opening and closing door shaft is arranged in a door leaf, the gap between the door leaf and a door frame is basically unchanged in the opening and closing processes of the door leaf, the injury of hands inserted into the door leaf by children is prevented, and further, due to the enhanced positioning function, the opening and closing stop angles of the door leaf are more accurate, and the requirements of safety and attractiveness in life of modern society can be met.

The purpose of the embodiment of the invention is realized by the following technical scheme:

the invention provides a bidirectional opening and closing door shaft, comprising: the outer sleeve, the first cover part, the second cover part, the output shaft, the chute column, the central shaft, the reset spring and the spring stop part, wherein one end of the outer sleeve is provided with a flange, the flange is provided with a flange mounting hole, the second cover part is arranged in a pipe cavity of the outer sleeve close to the flange mounting hole, the first cover part is arranged in a pipe cavity at the other end of the outer sleeve, the outer sleeve is fixedly connected with the first cover part and the second cover part, the first end part of the central shaft extends into an inner cavity of the first cover part, the central shaft and the first cover part form a matching structure with axial sliding connection and synchronous rotation, the second end part of the central shaft extends into an inner cavity of the chute column, the second end part is provided with a first driving shaft and a second driving shaft which are oppositely and vertically staggered, the first chute and the second chute which are oppositely arranged and vertically are arranged on the chute column, the first chute and the second chute are both in a V, the second driving shaft extends into the second chute, the cylinder bottom of the chute column extends out of the output shaft, the output shaft extends out of the inner cavity of the second cover part, the output shaft and the chute column are movably connected with the second cover part, the output shaft and the chute column only do circumferential motion in the cavity of the outer sleeve, the spring stop part is fixedly embedded in the middle section of the central shaft, and the assembly mode of the reset spring is that the reset spring is sleeved on a central shaft body between the upper end surface of the spring stop part and the inner end surface of a part which does not do axial motion above the spring stop part;

when the output shaft and the sliding groove column move circumferentially in the tube cavity of the outer sleeve, the first driving shaft slides in the first sliding groove and slides from the lowest position of the V shape to the highest position of the V shape, and the second driving shaft slides in the second sliding groove and slides from the lowest position of the V shape to the highest position of the V shape, the spring blocking part moves axially and compresses the return spring.

Furthermore, the inner cavity of the outer sleeve is also provided with a reinforced positioning mechanism, the second cover part is a second sealing cover, the reinforced positioning mechanism comprises a second sealing cover, a positioning sleeve, a positioning ball and a positioning spring, the second sealing cover is integrally in a ring shape with two inwards concave ends and a hollow step surface in the middle section, the hollow step surface is provided with a plurality of positioning holes, the positioning sleeve is integrally in a ring shape and fixedly sleeved in the middle section of the output shaft, the positions of the positioning sleeve corresponding to the positioning holes are respectively provided with a through hole, the positioning ball and the positioning spring are vertically arranged in the through holes, the positioning ball can be jacked into the positioning holes by the positioning spring, and the output shaft penetrates through the second sealing cover and.

Further, a plurality of steel balls are arranged between the outer end face of the chute column facing the output shaft and the inner end face of the second sealing cover facing the chute column.

Furthermore, a fastening screw for synchronously connecting the positioning sleeve with the movement of the output shaft is arranged at the position of the positioning sleeve, which is vertical to the axis.

Furthermore, after the output shaft passes through the positioning sleeve, the output shaft sequentially penetrates through the bearing outer ring, the bearing inner ring and the retainer ring, and a rolling bearing is arranged between the bearing outer ring and the bearing inner ring.

Furthermore, after the output shaft penetrates through the positioning sleeve, the output shaft sequentially penetrates through the bearing outer ring and the bearing inner ring, a rolling bearing is arranged between the bearing outer ring and the bearing inner ring, and the bearing inner ring is fixedly connected with the output shaft.

Furthermore, the highest position of the V-shaped of the first sliding groove and the highest position of the V-shaped of the second sliding groove are respectively provided with a horizontal groove section which is parallel to the end surface of the sliding groove column, and the horizontal groove section comprises a concave groove section which is arranged relative to the end surface of the sliding groove column.

Furthermore, the shaft bodies of the first driving shaft and the second driving shaft are respectively sleeved with a sliding sleeve.

Further, first cover is the axle sleeve, and the inner wall of axle sleeve is provided with the spline groove, and the first end that stretches into the inner chamber of axle sleeve is provided with the integral key shaft, and the center pin forms endwise slip connection and synchronous pivoted cooperation structure with the axle sleeve, realizes endwise slip connection and synchronous rotation through the cooperation of integral key shaft and spline groove between center pin and the axle sleeve.

Furthermore, a hydraulic buffer mechanism is arranged in an inner cavity of the outer sleeve between the inner end face of the first cover part and the inner end face of the sliding chute column.

Further, the hydraulic buffer mechanism comprises a spring stop part, and the spring stop part is a piston.

Further, when the assembly mode of the return spring is specifically as follows: when the return spring is sleeved on the central shaft body between the upper end surface of the piston and the inner end surface of the first cover part, a space between the upper end surface of the piston and the inner end surface of the first cover part is an oil storage cavity, and a space between the lower end surface of the piston and the inner end surface of the chute column is a pressure oil cavity.

Furthermore, a check ring is arranged between the return spring and the upper end face of the piston.

Further, a seal ring is provided between the outer wall of the first lid portion and the inner wall of the outer sleeve, a seal ring is provided between the outer wall of the piston and the inner wall of the outer sleeve, a seal ring is provided between the inner wall of the second lid portion and the outer wall of the output shaft, and a seal ring 21 is provided between the outer wall of the second lid portion and the inner wall of the outer sleeve.

Further, the piston is a piston with a one-way valve.

Further, a magnet is arranged at the bottom of the inner wall of the sliding groove column.

Furthermore, the bidirectional opening and closing door shaft is also provided with a hydraulic oil flow control mechanism.

Further, the concrete structure of the hydraulic oil flow control mechanism is as follows: a hole channel is formed in the shaft body of the central shaft from the outer end face of the first end portion along the axis of the central shaft, an oil return hole is formed in the shaft body of the central shaft and communicated with the hole channel, a speed regulating oil needle is placed in the hole channel from top to bottom, a first sealing cover is screwed on the outer end portion of the first cover, a speed regulating screw is screwed in a central through hole of the first sealing cover, the speed regulating oil needle is embedded in one end of the speed regulating screw, an adjusting wheel is fixedly mounted on the other end of the speed regulating screw, the other end of the speed regulating screw extends out of the upper end face of the first sealing cover, and a gap is reserved between the central shaft and.

Further, the concrete structure of the hydraulic oil flow control mechanism can also be as follows: a hole channel is formed in the shaft body of the first end portion along the axis of the central shaft from the outer end face of the first end portion, an oil return hole is formed in the shaft body of the central shaft and communicated with the hole channel, a speed regulating oil needle is placed in the hole channel from top to bottom, a first sealing cover is screwed on the outer end portion of the first cover portion, a speed regulating screw is screwed in a central through hole of the first sealing cover, the speed regulating oil needle is embedded in one end of the speed regulating screw, an adjusting wheel is fixedly mounted on the other end of the speed regulating screw, the other end of the speed regulating screw extends out of the upper end face of the first sealing cover portion, and a through hole is formed between the upper end.

In the specific structure of the two hydraulic oil flow control mechanisms, the oil return hole is positioned on the shaft body of the central shaft between the lower end surface of the piston and the inner end surface of the chute column, or,

the oil return hole is communicated with the hole channel on the outer end face of the second end part along the axis of the central shaft.

Furthermore, the speed regulation oil needle is variable in diameter.

Further, a sealing ring is arranged between the inner wall of the first sealing cover and the outer wall of the speed regulation screw, and a sealing ring is arranged between the outer wall of the first sealing cover and the inner wall of the first cover part.

Further, when the assembly mode of the return spring is specifically as follows: when the return spring is sleeved on the central shaft body between the upper end surface of the piston and the inner end surface of the chute column, a space between the upper end surface of the piston and the inner end surface of the chute column is an oil storage cavity, and a space between the lower end surface of the piston and the inner end surface of the first cover part is a pressure oil cavity.

Further, a plane bearing is arranged between the upper end face of the return spring and the inner end face of the chute column.

Further, a seal ring is provided between the outer wall of the first lid portion and the inner wall of the outer sleeve, a seal ring is provided between the outer wall of the piston and the inner wall of the outer sleeve, a seal ring is provided between the inner wall of the second lid portion and the outer wall of the output shaft, and a seal ring 21 is provided between the outer wall of the second lid portion and the inner wall of the outer sleeve.

Further, the piston is a piston with a one-way valve.

Further, a magnet is provided on the inner end surface of the first lid.

Furthermore, the bidirectional opening and closing door shaft is also provided with a hydraulic oil flow control mechanism.

Further, the concrete structure of the hydraulic oil flow control mechanism is as follows: a hole channel is formed in the shaft body of the central shaft from the outer end face of the first end portion along the axis of the central shaft, an oil return hole is formed in the shaft body of the central shaft and communicated with the hole channel, a speed regulating oil needle is arranged in the hole channel from bottom to top, a first sealing cover is screwed on the outer end portion of the first cover, a speed regulating screw is screwed in a central through hole of the first sealing cover, the speed regulating oil needle is embedded in one end of the speed regulating screw, an adjusting wheel is fixedly mounted on the other end of the speed regulating screw, the other end of the speed regulating screw extends out of the upper end face of the first sealing cover, and a gap is reserved between the central shaft and.

Further, the concrete structure of the hydraulic oil flow control mechanism can also be as follows: a hole channel is formed in the shaft body of the first end portion along the axis of the central shaft from the outer end face of the first end portion, an oil return hole is formed in the shaft body of the central shaft and communicated with the hole channel, a speed regulating oil needle is arranged in the hole channel from bottom to top, a first sealing cover is screwed on the end portion, outwards, of the first cover portion, a speed regulating screw is screwed in a central through hole of the first sealing cover, the speed regulating oil needle is embedded in one end of the speed regulating screw, the other end of the speed regulating screw extends out of the upper end face of the first sealing cover and is fixedly provided with a regulating wheel, and a through hole is formed between the upper end face of the first cover portion and.

In the specific structure of the two hydraulic oil flow control mechanisms, the oil return hole is positioned on the shaft body of the central shaft between the upper end surface of the piston and the inner end surface of the sliding chute column, or,

the oil return hole is provided on the outer end surface of the second end portion along the axis of the central shaft to communicate with the orifice 903.

Furthermore, the speed regulation oil needle is variable in diameter.

Further, a sealing ring is arranged between the inner wall of the first sealing cover and the outer wall of the speed regulation screw, and a sealing ring is arranged between the outer wall of the first sealing cover and the inner wall of the first cover part.

By using the technical scheme of the invention, the problems of troublesome ground digging and installation of the floor spring and potential safety hazards in use are solved. The problem of the use of one-way close door axle inconvenient is solved, the trouble that traditional two-way close door axle location is inaccurate, the door leaf misplaces after closing has been solved.

Drawings

FIG. 1 is an assembled cross-sectional view of a first embodiment of the present invention, namely a two-way opening and closing door shaft, which is installed at the upper portion of a door leaf and is used in combination with a left door frame and a right door leaf;

FIG. 2 is an assembled cross-sectional view of a second embodiment of the present invention, namely a two-way opening and closing door shaft, which is installed at the lower portion of a door leaf and is used in combination with a left door frame and a right door leaf;

FIG. 3 is a schematic top view of the relative movement of the door frame and the door leaf with the two-way opening and closing door shaft of the present invention installed, the left side being the door frame and the right side being the door leaf;

FIG. 4 is a schematic cross-sectional view of structural components of the first embodiment of the present invention of FIG. 1;

FIG. 5 is a schematic cross-sectional view of structural components of the second embodiment of the present invention of FIG. 2;

FIG. 6 is a perspective view of the chute post and output shaft of FIG. 2 in a second embodiment of the invention;

FIG. 7 is a schematic view of the structure of the central shaft;

FIG. 8 is a schematic view of the second closure;

FIG. 9 is a schematic view of the structure of the positioning sleeve;

FIG. 10 is a schematic cross-sectional view of the bi-directional opening/closing door shaft of FIG. 1 in a release (left view) and energy storage (right view) state;

fig. 11 is a schematic sectional view showing the discharging (right side view) and charging (left side view) states of the second embodiment of the bidirectional opening/closing door shaft of fig. 2.

In the figure: 1. an adjustment wheel; 2. A speed regulating screw; 3. a first cover; 4. a speed-regulating oil needle; 5. A shaft sleeve; 6. an outer sleeve; 601. A flange mounting hole; 7. a return spring; 8. a piston; 9. a central shaft; 9001. a first end portion; 9002. a second end portion; 10. a sliding sleeve; 901. a first drive shaft; 902. a second drive shaft; 903. A duct; 904. an oil return hole; 12. a chute column; 1201. a first chute; 1202. a second chute; 1203. an output shaft; 13. A steel ball; 14. a second cover; 1401. positioning holes; 15. a positioning ball; 16. a positioning spring; 17. a retainer ring; 18. a rolling bearing; 1801. a bearing outer race; 1802. bearing inner ring: 19. tightening the screw; 20. a positioning sleeve; 2001. a through hole; 21. a seal ring; 22. a one-way valve; 23. a pressurized oil chamber; 24. an oil storage chamber; 25. a magnet; 26. and a plane bearing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. Please read with reference to fig. 1-10.

In the present invention, the bidirectional opening and closing door shaft may be installed at an upper or lower portion of the door leaf. The structures of the two-way door opening shafts arranged at the upper part and the lower part can be consistent or inconsistent, the reason of the inconsistency is to consider the action of gravity, if a hydraulic buffer mechanism is used, the upper part is an oil storage cavity and the lower part is a pressure oil cavity in the direction vertical to the ground, because the pressure oil cavity needs to be protected from air, if the pressure oil cavity is arranged at the upper part, air possibly enters, and the compression elasticity of the air is large, so that the buffer effect of the hydraulic buffer is reduced.

The first embodiment is as follows:

as shown with reference to figures 1 to 7,

the invention provides a bidirectional opening and closing door shaft, comprising: the outer sleeve 6, the first cover part, the second cover part, the output shaft 1203, the chute column 12, the central shaft 9, the reset spring 7, the spring stop part, one end of the outer sleeve 6 is provided with a flange, the flange is provided with a flange mounting hole 601, the second cover part is arranged in a tube cavity of the outer sleeve 6 close to the flange mounting hole 601, the first cover part is arranged in a tube cavity of the other end of the outer sleeve 6, the outer sleeve 6 is fixedly connected with the first cover part and the second cover part, a first end part 9001 of the central shaft 9 extends into an inner cavity of the first cover part, the central shaft 9 and the first cover part form an axial sliding connection and synchronous rotation matching structure, a second end part 9002 of the central shaft 9 extends into an inner cavity of the chute column 12, the second end part 9002 is provided with a first driving shaft 901 and a second driving shaft 902 which are arranged in an up-down staggered manner, the first chute and the second chute which are arranged in an up-down staggered manner, the first chute 1201 and, the first driving shaft 901 extends into the first sliding chute 1201, the second driving shaft 902 extends into the second sliding chute 1202, the bottom of the sliding chute column 12 extends out of the output shaft 1203, the output shaft 1203 extends out of the inner cavity of the second cover part, the output shaft 1203 and the sliding chute column 12 are movably connected with the second cover part, the output shaft 1203 and the sliding chute column 12 only do circumferential motion in the tube cavity of the outer sleeve 6, the spring stop part is fixedly embedded in the middle section of the central shaft 9, and the assembly mode of the reset spring 7 is that the reset spring 7 is sleeved on the shaft body of the central shaft 9 between the upper end surface of the spring stop part and the inner end surface of a part which does not do axial motion above the spring stop part;

when the output shaft 1203 and the chute post 12 move circumferentially in the lumen of the outer sleeve 6, the first driving shaft 901 slides in the first chute 1201 and slides from the lowest position of the V-shape to the highest position of the V-shape, and the second driving shaft 902 slides in the second chute 1202 and slides from the lowest position of the V-shape to the highest position of the V-shape, the spring catch moves axially and compresses the return spring 7.

In this embodiment, since the first sliding groove 1201 and the second sliding groove 1202 are both V-shaped, the first driving shaft 901 extends into the first sliding groove 1201, and the second driving shaft 902 extends into the second sliding groove 1202, when the first driving shaft 901 and the second driving shaft 902 are at the lowest V-shaped position of their respective sliding grooves, the door spindle is in the release state, i.e. the most stable state, in this case, the first driving shaft and the second driving shaft can select the inclined section to slide toward the left side or the inclined section to slide toward the right side in their respective sliding grooves, and due to the linkage and energy storage, the door leaf can be opened and closed bidirectionally. This product inlays the dress in the door leaf, and the gap of door leaf and door frame is unchangeable basically when opening or closing, prevents that child's hand from inserting into tong injury. Furthermore, due to the positioning function, the requirements of safety and beauty of life of modern society can be met.

Example two:

as shown with reference to figures 1 to 11,

furthermore, a reinforcing positioning mechanism is further installed in the inner cavity of the outer sleeve 6, the second cover part is a second sealing cover 14, the positioning mechanism comprises the second sealing cover 14, a positioning sleeve 20, a positioning ball 15 and a positioning spring 16, the second sealing cover 14 is integrally in a circular ring shape with two inwards concave ends and a hollow step surface in the middle section, a plurality of positioning holes 1401 are formed in the hollow step surface, the positioning sleeve 20 is integrally in a circular ring shape and fixedly sleeved on the middle section of the output shaft 1203, through holes 2001 are respectively formed in the positions, corresponding to the positioning holes 1401, of the positioning sleeve 20, the positioning ball 15 and the positioning spring 16 are vertically arranged in the through holes, the positioning ball 15 can be pushed into the positioning holes 1401 by the positioning spring 16, and the output shaft 1203 penetrates through the second sealing cover 14 and.

In the embodiment, as the positioning strengthening function is further provided, the requirements of safety and beauty of life of modern society can be met.

Further, a plurality of steel balls 13 are provided between an outer end surface of the chute column 12 facing the output shaft 1203 and an inner end surface of the second cover 14 facing the chute column 12.

The steel ball is used for reducing abrasion between the second sealing cover and the sliding chute column.

Further, a position of the positioning sleeve 20 perpendicular to the axis is provided with a set screw 19 for synchronously connecting the positioning sleeve 20 with the movement of the output shaft 1203.

The function of the set screw is to strengthen the synchronous movement of the locating sleeve and the output shaft.

Further, after the output shaft 1203 passes through the positioning sleeve 20, it sequentially passes through the rolling bearing 18 and the retainer ring 17, and the rolling bearing 18 is disposed between the bearing outer ring 1801 and the bearing inner ring 1802.

The retainer ring is used for limiting the output shaft to move only in the circumferential direction and not in the axial direction. The rolling bearing functions to enhance the smoothness of the circumferential movement of the output shaft.

Or after the output shaft 1203 passes through the positioning sleeve 20, the output shaft 1203 sequentially passes through the rolling bearing 18 and the retainer ring 17, the rolling bearing 18 is arranged between the bearing outer ring 1801 and the bearing inner ring 1802, and the bearing inner ring is fixedly connected with the output shaft 1203.

The function of the fixed connection of the bearing inner race to the output shaft 1203 is that it acts as a retaining ring.

Further, the highest point of the V-shape of the first sliding chute 1201 and the highest point of the V-shape of the second sliding chute 1202 are respectively provided with a horizontal groove section parallel to the end surface of the sliding chute column 12. The horizontal groove section comprises a concave groove section arranged relative to the end face of the chute column.

The horizontal groove section has the function of enabling the door leaf to stay at will, and the concave groove section enables the door leaf to stay at the angle, so that the positioning stability of the opening angle of the door leaf is realized.

Further, the shaft bodies of the first driving shaft 901 and the second driving shaft 902 are respectively sleeved with a sliding sleeve 10.

The sliding sleeve enables the driving shaft to rotate in the sliding groove smoothly, and abrasion is reduced.

Further, first lid is axle sleeve 5, and the inner wall of axle sleeve 5 is provided with the spline groove, and first end 9001 that stretches into the inner chamber of axle sleeve 5 is provided with the integral key shaft, and center pin 9 forms axial sliding connection and synchronous pivoted cooperation structure with axle sleeve 5, realizes axial sliding connection and synchronous rotation through the cooperation of integral key shaft and spline groove between center pin 9 and the axle sleeve 5.

The matching of the spline shaft and the spline groove enables the central shaft and the shaft sleeve to more accurately realize synchronous rotation and axial sliding connection, and the parts are also convenient to process.

Example three:

as shown with reference to figures 1 to 11,

further, a hydraulic buffer mechanism is arranged in the inner cavity of the outer sleeve 6 between the inner end surface of the first cover part and the inner end surface of the chute column 12.

The hydraulic buffer mechanism can control the closing speed of the door leaf, reduce the noise of closing the door and prevent the risk of hurting people due to the too high self-closing speed.

Further, the hydraulic buffer mechanism includes a spring stop, which is the piston 8.

Further, when the assembly mode of the return spring 7 is specifically: when the return spring 7 is fitted around the shaft body of the central shaft 9 between the upper end surface of the piston 8 and the inner end surface of the first cap portion, the space between the upper end surface of the piston 8 and the inner end surface of the first cap portion is an oil storage chamber 24, and the space between the lower end surface of the piston 8 and the inner end surface of the chute post 12 is a pressure oil chamber 23.

The assembling mode is mainly suitable for the condition that the bidirectional opening and closing door shaft is applied to the lower part of the door leaf.

Further, a retainer ring 17 is provided between the return spring 7 and the upper end surface of the piston 8.

The retainer ring also serves to reduce wear between the return spring and the piston due to relative movement.

Further, a seal ring 21 is provided between the outer wall of the first lid portion and the inner wall of the outer tube 6, a seal ring 21 is provided between the outer wall of the piston 8 and the inner wall of the outer tube 6, a seal ring 21 is provided between the inner wall of the second lid 14 and the outer wall of the output shaft 1203, and a seal ring 21 is provided between the outer wall of the second lid 14 and the inner wall of the outer tube 6.

The sealing ring can prevent hydraulic oil from leaking.

Further, the piston 8 is a piston having a check valve.

Further, a magnet 25 is provided at the bottom of the inner wall of the chute post 12.

The magnet can adsorb fine metal scraps generated by abrasion among the parts, and the cleaning effect of the hydraulic oil and the smooth movement effect of the door shaft are kept. This arrangement is mainly suitable for use when the two-way opening and closing door shaft is applied to the lower part of the door leaf, as shown in fig. 2 and 5.

Example four:

as shown with reference to figures 1 to 11,

furthermore, the bidirectional opening and closing door shaft is also provided with a hydraulic oil flow control mechanism.

Since the flow rate of the hydraulic oil is controlled, the door closing speed can be adjusted more accurately.

Further, the concrete structure of the hydraulic oil flow control mechanism is as follows: a hole 903 is formed in the shaft body of a first end portion 9001 along the axis of a center shaft 9 from the outer end face of the first end portion 9001, an oil return hole 904 is formed in the shaft body of the center shaft 9, the oil return hole 904 is communicated with the hole 903, a speed regulation oil needle 4 is placed in the hole from top to bottom, a first sealing cover 3 is screwed on the outer end portion of the first cover portion, a speed regulation screw 2 is screwed on a central through hole of the first sealing cover 3, the speed regulation oil needle 4 is embedded on one end of the speed regulation screw 2, an adjusting wheel 1 is fixedly mounted on the other end of the speed regulation screw 2 extending out of the upper end face of the first sealing cover portion, and a gap is reserved between the center shaft 9 and the inner.

In this embodiment, the specific structure of the hydraulic oil flow control mechanism is mainly suitable for the application of the bidirectional opening and closing door shaft to the lower part of the door leaf.

The specific structure of the hydraulic oil flow control mechanism can also be as follows: a hole 903 is formed in the shaft body of the first end portion 9001 along the axis of the central shaft 9 from the outer end face of the first end portion 9001, an oil return hole 904 is formed in the shaft body of the central shaft 9, the oil return hole 904 is communicated with the hole 903, a speed regulation oil needle 4 is placed in the hole from top to bottom, a first sealing cover 3 is screwed on the outer end portion of the first cover portion, a speed regulation screw 2 is screwed on a central through hole of the first sealing cover 3, the speed regulation oil needle 4 is embedded on one end of the speed regulation screw 2, the other end of the speed regulation screw 2 extends out of the upper end face of the first sealing cover portion and is fixedly provided with an adjusting wheel 1, and a through hole serving as an oil passing path is formed between the.

In the specific structure of the two hydraulic oil flow control mechanisms, the oil return hole 904 is located on the shaft body of the central shaft 9 between the lower end surface of the piston 8 and the inner end surface of the chute column 12, or,

the oil return hole 904 is provided on the outer end surface of the second end portion 9002 to communicate with the hole 903 along the axis of the center shaft 9.

The first cover portion is used to block one end of the outer sleeve to prevent the leakage of hydraulic oil, and the first cover portion may be formed by combining the boss 5 with the first cover 3, or may be provided in other manners.

The specific structure of the hydraulic oil flow control mechanism is mainly suitable for the lower part of a door leaf when a bidirectional opening and closing door shaft is applied to the lower part of the door leaf.

Further, the speed regulation oil needle 4 is reduced in diameter.

Because the relevant parts of the speed-regulating oil needle have the characteristics of different thicknesses, when the depth of the speed-regulating oil needle entering the pore channel is regulated from the top, the hydraulic oil quantity flowing in the pore channel can be changed, and a user can control the closing speed of the door leaf according to the requirement. The speed regulation oil needle is preferably in a conical shape.

Further, a seal ring 21 is provided between the inner wall of the first cover 3 and the outer wall of the speed adjusting screw 2, and a seal ring 21 is provided between the outer wall of the first cover and the inner wall of the first lid portion.

The sealing ring can prevent hydraulic oil from leaking.

Further, when the assembly mode of the return spring 7 is specifically: when the return spring 7 is fitted around the shaft body of the central shaft 9 between the upper end surface of the piston 8 and the inner end surface of the chute post 12, the space between the upper end surface of the piston 8 and the inner end surface of the chute post 12 is an oil storage chamber 24, and the space between the lower end surface of the piston 8 and the inner end surface of the first cover portion is a pressure oil chamber 23.

The assembling mode is mainly suitable for the two-way opening and closing door shaft applied to the upper part of the door leaf.

Further, a plane bearing 26 is provided between the upper end surface of the return spring 7 and the inner end surface of the chute post 12.

The plane bearing has the function of reducing abrasion between the sliding groove column and the return spring, so that the opening and closing of the door leaf are smoother. This assembly is mainly suitable for the case where the shaft of the two-way opening and closing door is applied to the upper portion of the door leaf, as shown in fig. 1 and 4.

Further, a seal ring 21 is provided between the outer wall of the first lid portion and the inner wall of the outer tube 6, a seal ring 21 is provided between the outer wall of the piston 8 and the inner wall of the outer tube 6, a seal ring 21 is provided between the inner wall of the second lid 14 and the outer wall of the output shaft 1203, and a seal ring 21 is provided between the outer wall of the second lid 14 and the inner wall of the outer tube 6.

The sealing ring can prevent hydraulic oil from leaking.

Further, the piston 8 is a piston having a check valve.

Further, a magnet 25 is provided on the inner end surface of the first lid.

The magnet can adsorb fine metal scraps generated by abrasion among the parts, and the cleaning effect of the hydraulic oil and the smooth movement effect of the door shaft are kept.

Furthermore, the bidirectional opening and closing door shaft is also provided with a hydraulic oil flow control mechanism.

Further, the concrete structure of the hydraulic oil flow control mechanism is as follows: a hole 903 is formed in the shaft body of a first end portion 9001 along the axis of a center shaft 9 from the outer end face of the first end portion 9001, an oil return hole 904 is formed in the shaft body of the center shaft 9, the oil return hole 904 is communicated with the hole 903, a speed regulation oil needle 4 is arranged in the hole 903 from bottom to top, a first sealing cover 3 is screwed on the outer end portion of the first cover portion, a speed regulation screw 2 is screwed on a central through hole of the first sealing cover 3, the speed regulation oil needle 4 is embedded on one end of the speed regulation screw 2, the other end of the speed regulation screw 2 extends out of the upper end face of the first sealing cover portion and is fixedly provided with an adjusting wheel 1, and a gap is reserved between the center shaft 9 and the.

The specific structure of the hydraulic oil flow control mechanism is mainly suitable for the two-way opening and closing door shaft applied to the upper part of the door leaf.

The specific structure of the hydraulic oil flow control mechanism can also be as follows: the hydraulic oil flow control mechanism has the specific structure that: a hole 903 is formed in the shaft body of the first end portion 9001 along the axis of the central shaft 9 from the outer end face of the first end portion 9001, an oil return hole 904 is formed in the shaft body of the central shaft 9, the oil return hole 904 is communicated with the hole 903, a speed regulation oil needle 4 is arranged in the hole 903 from bottom to top, a first sealing cover 3 is screwed on the outer end portion of the first cover portion, a speed regulation screw 2 is screwed on a central through hole of the first sealing cover 3, the speed regulation oil needle 4 is embedded on one end of the speed regulation screw 2, the other end of the speed regulation screw 2 extends out of the upper end face of the first sealing cover portion and is fixedly provided with an adjusting wheel 1, and a through hole serving as an oil passing path is formed between the.

In the specific structure of the two hydraulic oil flow control mechanisms, the oil return hole 904 is located on the shaft body of the central shaft 9 between the upper end surface of the piston 8 and the inner end surface of the chute column 12, or,

the oil return hole 904 is provided on the outer end surface of the second end portion 9002 to communicate with the port 903 along the axis of the center shaft 9.

Further, the speed regulation oil needle 4 is reduced in diameter.

Because the relevant parts of the speed-regulating oil needle have the characteristics of different thicknesses, when the depth of the speed-regulating oil needle entering the pore channel is regulated from the top, the hydraulic oil quantity flowing in the pore channel can be changed, and a user can control the closing speed of the door leaf according to the requirement. The speed regulation oil needle is preferably in a conical shape.

Further, a seal ring 21 is provided between the inner wall of the first cover 3 and the outer wall of the speed adjusting screw 2, and a seal ring 21 is provided between the outer wall of the first cover and the inner wall of the first lid portion.

The sealing ring can prevent hydraulic oil from leaking.

The better use scene of the embodiment of the invention is shown as follows:

when the bidirectional opening and closing door shaft is embedded at the upper part of the door leaf, the door shaft is fixed with the door leaf through the flange mounting hole 601 of the outer sleeve 6, the output shaft 1203 is connected with the door frame through a component, in the actual use process, when a user opens and closes the door leaf, the output shaft 1203 is rotated by external force to enable the sliding chute column 12 to integrally rotate, as the central shaft 9 and the shaft sleeve 5 are synchronously and axially connected in a sliding fit mode, and the shaft sleeve 5, the outer sleeve 6 and the second sealing cover 14 are fixedly connected, when the sliding chute column 12 rotates, the first sliding chute 1201 and the second sliding chute 1202 rotate and displace, the first driving shaft 901 is driven to move upwards in the first sliding chute 1201 and the second driving shaft 902 is driven to move upwards in the first sliding chute 1201, as the change from left to right in the figure 10, the central shaft 9 is driven to only axially move, and when the first driving shaft 901 and the second driving shaft 902 are positioned at the lowest V-shaped positions of the first sliding chute and the second sliding chute, no matter the first driving When the first driving shaft 901 and the second driving shaft 902 are positioned in the groove parallel to the horizontal end surface at the V-shaped highest position of the first sliding chute and the second sliding chute, the central shaft 9 does not move axially, the sliding sleeve 10 is clamped and positioned by the pressure of the return spring 7 when running to the groove section, the peripheral movement of the central shaft is limited to a fixed angle and stays, the return spring 7 is in an energy storage state, when the output shaft 1203 rotates, the positioning sleeve 20 also rotates along with the rotation, the positioning ball 15 is separated from the positioning hole 1401 and slides along the circumference of the step hollow surface of the second sealing cover 14, when the positioning ball 19 is separated from the positioning hole 1401, the positioning ball 19 moves upwards to compress the positioning spring 16 for storing energy, when the output shaft 1203 rotates left or right by 90 degrees, the positioning spring 16 can push the lower part of the positioning ball 19 to extend into the positioning hole 1401, 90-degree reinforced positioning is realized;

when the bidirectional opening and closing door shaft is in an opening position, namely the first driving shaft 901 and the second driving shaft 902 are positioned in the groove parallel to the horizontal end face at the V-shaped highest position of the first sliding chute and the second sliding chute, the output shaft 1203 is rotated in the opposite direction of the original opening to integrally rotate the sliding chute column 12 and the positioning sleeve 20, when the driving shaft 11 slides to the inclined section of the V-shaped sliding chute, the reset spring 7 can drive the piston 8 and the central shaft 9 to axially move downwards, the second driving shaft 902 and the first driving shaft 901 also move downwards, and slide to the lowest position at the bottom of the V-shaped groove through the inclined section of the V-shaped sliding chute, so that the sliding chute column 12 and the positioning sleeve 20 integrally rotate and reset to realize automatic closing, in the rotating process, the lower ball body of the positioning ball 15 is separated from the positioning hole 1401 to release 90-degree clamping positioning, and presses the positioning spring 16 to store energy, in the middle process, the positioning ball 15 slides on the circular, then, the positioning spring 16 can release energy to push the lower ball of the positioning ball 15 to extend into the positioning hole 1401 to realize 0-degree positioning, when the piston 8 moves downwards, the check valve on the piston is closed, the hydraulic oil pushing the pressurized oil chamber 230 flows to the oil storage chamber 24 through an oil return path of the central shaft 9, the oil in the pressurized oil chamber 23 can flow to the hole 903 of the central shaft through a gap between the outer column body of the first end portion 9001 of the central shaft and the first cover portion such as the shaft sleeve 5 and then flows to the oil storage chamber 24 through an oil return hole 904 on the hole, a user can control the return speed of the hydraulic oil to realize buffer closing, the speed adjusting screw 2 is screwed through the adjusting wheel 1, the insertion depth of the speed adjusting oil needle 4 of the tapered needle rod inserted into the hole of the central shaft 9 is changed, the gap between the speed adjusting oil needle 4 and the hole.

When the bidirectional opening and closing door shaft is embedded at the lower part of the door leaf, the door shaft is fixed with the door leaf through the flange mounting hole 601 of the outer sleeve 6, the output shaft 1203 is connected with the ground or the bottom of the door frame through a component, in the actual use process, when a user opens and closes the door leaf, the output shaft 1203 is rotated by external force to enable the sliding chute column 12 to integrally rotate, because the central shaft 9 and the shaft sleeve 5 are synchronously and axially connected in a sliding fit manner, and the shaft sleeve 5, the outer sleeve 6 and the second sealing cover 14 are fixedly connected, when the sliding chute column 12 rotates, the first sliding chute 1201 and the second sliding chute 1202 rotationally displace to drive the first driving shaft 901 to displace in the first sliding chute 1201 and the second driving shaft 902 to displace upwards in the first sliding chute 1201, as the change from right to left in fig. 11 drives the central shaft 9 to only axially move, when the first driving shaft 901 and the second driving shaft 902 are positioned at the lowest V-, no matter the first driving shaft 901 and the second driving shaft 902 rotate leftwards or rightwards, the central shaft 9 can move upwards in the axial direction, the piston also moves along with the movement and presses the return spring 7 to store energy, hydraulic oil in the oil storage cavity 24 flows to the pressure oil cavity 23 through the check valve 22, when the first driving shaft 901 and the second driving shaft 902 are positioned in the groove parallel to the horizontal end face at the V-shaped highest position of the first sliding groove and the second sliding groove, the central shaft 9 does not move axially, the sliding sleeve 10 is clamped and positioned by the pressure of the return spring 7 when the sliding sleeve moves to the groove section, the circumferential movement of the central shaft is limited by a fixed angle to stop, the return spring 7 is in an energy storage state, when the output shaft 1203 rotates, the positioning sleeve 20 also rotates along with the positioning hole 1401, the positioning ball 15 slides along the circumference of the hollow step face of the second sealing cover 14 after separating from the positioning ball 1401, and the positioning ball 19 moves downwards to compress the, when the output shaft 1203 rotates left or right by 90 degrees, the positioning spring 16 can push the upper ball body of the positioning ball 19 to extend into the positioning hole 1401, so that 90-degree reinforced positioning is realized;

when the bidirectional opening and closing door shaft is in an opening position, namely the first driving shaft 901 and the second driving shaft 902 are positioned in the groove parallel to the horizontal end face at the V-shaped highest position of the first sliding chute and the second sliding chute, the output shaft 1203 is rotated in the opposite direction of the original opening to integrally rotate the sliding chute column 12 and the positioning sleeve 20, when the driving shaft 11 slides to the inclined section of the V-shaped sliding chute, the reset spring 7 can drive the piston 8 and the central shaft 9 to axially move downwards, the second driving shaft 902 and the first driving shaft 901 also move downwards, and slide to the lowest position at the bottom of the V-shaped groove through the inclined section of the V-shaped sliding chute, so that the sliding chute column 12 and the positioning sleeve 20 integrally rotate and reset to realize automatic closing, in the rotating process, the upper ball body of the positioning ball 15 is separated from the positioning hole 1401 to release 90-degree clamping positioning, and presses the positioning spring 16 to store energy, in the middle process, the positioning ball 15 slides on the circular, then, the positioning spring 16 is released to push the upper ball of the positioning ball 15 to extend into the positioning hole 1401 to realize 0 degree positioning, when the piston 8 moves downward, the check valve 22 on the piston is closed, hydraulic oil pushing the pressure-receiving oil chamber 23 flows to the oil chamber 24 through a return path provided by the central shaft 9, and oil in the pressure-receiving oil chamber 23 can flow to the orifice 903 of the central shaft through the return hole 904 and then flows to the oil chamber 24 through a gap between the central shaft and the first lid portion or the boss. The user can control the backward flow speed of hydraulic oil and realize buffering and close, twists speed governing screw 2 through regulating wheel 1, changes the depth of insertion that the speed governing oil needle 4 of vertebra degree needle bar inserted the central axis 9 pore, changes the flow size of the clearance control hydraulic oil between speed governing oil needle 4 and pore 903, realizes closing speed's adjustability.

The foregoing describes in detail a bidirectional opening/closing door shaft provided in an embodiment of the present invention, and a specific example is applied in the description to explain the principle and the embodiment of the present invention, and the description of the foregoing embodiment is only used to help understand the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.