阅读说明：本技术 一种阻尼转轴结构及应用有该结构的清洗机 (Damping rotating shaft structure and cleaning machine with same ) 是由 朱开杰 王式兴 于 2019-10-17 设计创作，主要内容包括：本发明涉及一种阻尼转轴结构及应用有该结构的清洗机,阻尼转轴结构包括固定轴、转轴、壳体、滑轴、转换结构、连杆、滑杆及弹性件,固定轴安装在第一基体开口边缘处,转轴的第一端通过螺钉固定连接在固定轴的端部。本发明的第二基体在下翻过程中会使转轴的扭矩不断增大,而本发明转换结构可将转轴的周向转动转换为滑轴的轴向移动,滑轴在移动过程中通过连杆及滑杆实现与弹性件力的传递,从而在转轴扭矩增大时,不断通过弹性件抵消一定的扭矩,随着弹性件的逐渐压缩或伸展,使转轴扭矩可根据面板下翻状态实时调节,从而控制面板下翻速度、提高阻尼效果；本发明的清洗机能有效调节门体闭合时的下翻速度,提高用户体验感。(The invention relates to a damping rotating shaft structure and a cleaning machine applying the structure. The torque of the rotating shaft can be continuously increased in the downward turning process of the second base body, the circumferential rotation of the rotating shaft can be converted into the axial movement of the sliding shaft by the conversion structure, the sliding shaft can realize the force transmission with the elastic part through the connecting rod and the sliding rod in the movement process, so that a certain torque is continuously offset by the elastic part when the torque of the rotating shaft is increased, and the torque of the rotating shaft can be adjusted in real time according to the downward turning state of the panel along with the gradual compression or extension of the elastic part, so that the downward turning speed of the panel is controlled, and the damping effect is improved; the cleaning machine can effectively adjust the downward turning speed when the door body is closed, and improves the user experience.)

1. The utility model provides a damping pivot structure, includes fixed axle (1) and pivot (2), install on first base member (10) fixed axle (1), the first end fixed connection of pivot (2) is at the tip of fixed axle (1), its characterized in that: also comprises

A housing (3), the housing (3) being mounted on a second base body (20) that can be flipped relative to the first base body (10) and having a mounting region (30);

the sliding shaft (4) is arranged in the assembly area (30) in an axially movable mode along the rotating shaft (2), and a first end of the sliding shaft (4) is arranged corresponding to a second end of the rotating shaft (2);

the conversion structure (5) is arranged between the second end of the rotating shaft (2) and the first end of the sliding shaft (4) and is used for converting the axial rotation of the rotating shaft (2) into the axial movement of the sliding shaft (4);

a connecting rod (6), wherein the first end of the connecting rod (6) is rotatably connected to the second end of the sliding shaft (4), the middle part of the connecting rod (6) is rotatably restrained on the shell (3), and the second end of the connecting rod (6) extends towards the side of the sliding shaft (4);

the first end of the sliding rod (7) is rotatably connected with the second end of the connecting rod (6), and the second end of the sliding rod (7) extends towards the first side of the connecting rod (6) and is positioned on the same side of the connecting rod (6) as the rotating shaft (2); and

and the elastic piece (8) is arranged in the mounting area (30) and enables the second end of the connecting rod (6) to always keep a tendency of swinging towards the second side of the connecting rod, and the direction of the second side of the connecting rod (6) is opposite to that of the first side.

2. The damped hinge structure of claim 1, wherein: the elastic part (8) at least comprises a first spring (81) and a second spring (82), the sliding rod (7) can be constrained in the mounting area (30) in a reciprocating manner along the axial direction of the sliding rod, the first spring (81) is elastically connected with the sliding rod (7) under the state that the second base body (20) is turned over relative to the first base body (10) and is preliminarily closed, and the second spring (82) is independently arranged relative to the sliding rod (7); and under the condition that the second base body (20) is continuously closed relative to the first base body (10), the first spring (81) and the second spring (82) are elastically connected with the sliding rod (7).

3. The damping spindle structure according to claim 2, wherein: the first spring (81) is sleeved on the periphery of the sliding rod (7), a limiting block (31) used for restricting the position of the sliding rod (7) is arranged in the mounting area (30), a shaft hole (311) for the second end of the sliding rod (7) to penetrate through is formed in the limiting block (31), a limiting portion (71) close to the first end is arranged on the sliding rod (7), and two ends of the first spring (81) are respectively abutted against the limiting block (31) and the limiting portion (71).

4. The damping spindle structure according to claim 2, wherein: elastic component (8) still include slider (83), open at slider (83) middle part has through-hole (831) that supplies slide bar (7) and first spring (81) to pass, slider (83) cover is put in first spring (81) periphery, second spring (82) cover is put in first spring (81) periphery and first end restraint in installation area (30), and the second end offsets with slider (83), it has in installation area (30) of slide bar (7) lateral part to go on spacing spout (32) with slider (83) lateral wall direction cooperation and can carry out the position to slider (83).

5. The damping spindle structure according to any one of claims 1 to 4, wherein: the adjusting mechanism (9) is capable of reducing the rotating speed of the rotating shaft (2) when the second base body (20) is close to the first base body (10), and the adjusting mechanism (9) is arranged in the mounting area (30) and connected with the middle of the connecting rod (6).

6. The damped hinge structure of claim 5, wherein: along the first end of connecting rod (6) is to the second end direction, the first lateral wall middle part of connecting rod (6) has first inclined plane (61) that gradually outwards inclines, second inclined plane (62) that gradually inclines to the first lateral wall of connecting rod from first inclined plane (61) outer end, the junction smooth transition of first inclined plane (61) and second inclined plane (62), be provided with in installation area (30) all the time with this first inclined plane (61) or second inclined plane (62) roll complex roller (63) and make this roller (63) all the time with actuating mechanism (64) that corresponding inclined plane sticiss.

7. The damped hinge structure of claim 6, wherein: the mounting area (30) is provided with a first mounting arm (641) and a second mounting arm (642) which are respectively positioned at the upper side and the lower side of the connecting rod (6), the first mounting arm (641) and the second mounting arm (642) are correspondingly provided with long holes (640) which are arranged along the length direction at the positions close to the connecting rod (6), a connecting shaft (643) vertically penetrates through the long holes (640) on the first mounting arm (641) and the second mounting arm (642) to be arranged, the roller (63) can be rotatably sleeved on the connecting shaft (643), and the shell (3) is further provided with a third spring (644) which can enable the connecting shaft (643) to move towards the connecting rod (6) all the time so that the roller (63) is in rolling fit with the first inclined surface (61) or the second inclined surface (62) of the connecting rod (6).

8. The damped hinge structure of claim 7, wherein: a limiting column (645) capable of vertically reciprocating in the axial direction of the connecting shaft (643) is arranged on the outer side of the connecting shaft (643), the outer end of the limiting column (645) is movably arranged on the shell (3), a second end of the limiting column (645) is provided with two clamping jaws (6451) which extend towards the connecting shaft (643) and clamp two ends of the connecting shaft (643), and the roller (63) is rotatably arranged between the two clamping jaws (6451).

9. The damping spindle structure according to any one of claims 1 to 4, wherein: the center part of the first end of the sliding shaft (4) is provided with a shaft hole (400) extending along the axial direction, and correspondingly, the center part of the second end of the rotating shaft (2) is provided with a shaft (200) extending along the axial direction, capable of being inserted and matched with the shaft hole (400) and in rotating fit; the second end of the rotating shaft (2) is provided with at least two first tooth parts (21) which are arranged at intervals in the circumferential direction, correspondingly, the first end of the sliding shaft (4) is provided with second tooth parts (41) which can be meshed with the first tooth parts (21), the top surfaces (211) of the first tooth parts (21) and the top surfaces (411) of the second tooth parts (41) are correspondingly formed into planes which can abut against each other, a first tooth groove (212) for the second tooth parts (41) to be clamped in is formed between every two adjacent first tooth parts (21), a second tooth groove (412) for the first tooth parts (21) to be clamped in is formed between every two adjacent second tooth parts (41), and the side edges (213) of the first tooth grooves (212) and the side edges (413) of the second tooth grooves (412) are respectively formed into inclined planes which gradually expand from the bottom to the corresponding top surfaces.

10. The damped hinge structure of claim 9, wherein: the utility model discloses a sliding ball bearing, including pivot (2) first end face structure, pivot (2) second end and slide shaft (4) second end face structure, the centre gripping has can reduce friction and gasket (51) that agrees with mutually with pivot (2) second end face structure between pivot (2) second end and the slide shaft (4) second end, it has first slide (22) along circumference extension to open on the terminal surface of pivot (2) second end, it has second slide (42) along circumference extension to open on the terminal surface of slide shaft (4) first end, and is corresponding, correspond respectively on the both ends face of gasket (51) and be provided with ability and corresponding first slide (22), second slide (42) direction complex smooth pearl (511).

11. A cleaning machine with the damping rotating shaft structure of any one of claims 1 to 10 applied thereto comprises a box body and a door body, wherein the box body is provided with a washing cavity and an upper port communicated with the top of the washing cavity, one edge of the door body is rotatably connected to the edge of the upper port of the box body, and the cleaning machine is characterized in that: the box constitutes first base member (10), the door body constitutes second base member (20), fixed axle (1) is installed in the edge of box upper end mouth, pivot (2) and other pivot regulation and control structures are installed in door body edge.

Technical Field

The invention relates to a damping rotating shaft structure and a cleaning machine applying the same.

Background

The existing rotating shaft structure only has the function of rotary connection, and the damping size of the rotating shaft can be changed only by changing the size, the shape or the material of the rotating shaft, which is very inconvenient.

Chinese utility model patent with publication number CN209067657U, whose publication number is CN209067657U, discloses a structure of adjustable damping pivot (application number: CN201821624321.9), which comprises a mounting seat, a rotating connecting plate, a first rotating shaft assembly and a second rotating shaft assembly, wherein the mounting seat is provided with a first fixing plate and a second fixing plate, the first fixing plate is vertically installed on one side surface of the mounting seat, the second fixing plate is vertically installed on the other side surface of the mounting seat, the first fixing plate is provided with a first connecting hole, and the second fixing plate is provided with a second connecting hole; the rotating connecting plate is provided with a first connecting block and a second connecting block. Although the damping value of the rotating shaft can be adjusted by adjusting the first locking nut and the second locking nut, the damping value cannot be automatically adjusted.

When the damping rotating shaft is applied to a structure with a panel capable of being turned up and down, particularly a structure with a heavy panel, the damping value of the rotating shaft is changed greatly in the turning process of the panel, so that the falling speed of the panel is unstable in the falling process, and the damping effect is poor.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a damping rotating shaft structure which can adjust a damping value in real time according to a panel turning-down state so as to control the panel turning-down speed and improve the damping effect.

The invention aims to solve another technical problem of providing a cleaning machine applying the damping rotating shaft structure aiming at the current situation of the prior art, wherein the cleaning machine can effectively adjust the downward turning speed when the door body is closed, and the user experience is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a damping pivot structure, includes fixed axle and pivot, the fixed axle is installed on first base member, the first end fixed connection of pivot is at the tip of fixed axle, its characterized in that: also comprises

A housing mounted on a second base body that can be flipped with respect to the first base body and having a mounting area;

the sliding shaft is arranged in the assembling area in an axially movable mode along the rotating shaft, and a first end of the sliding shaft is arranged corresponding to a second end of the rotating shaft;

the conversion structure is arranged between the second end of the rotating shaft and the first end of the sliding shaft and is used for converting the axial rotation of the rotating shaft into the axial movement of the sliding shaft;

a connecting rod, wherein the first end of the connecting rod is rotatably connected to the second end of the sliding shaft, the middle part of the connecting rod is rotatably restrained on the shell, and the second end of the connecting rod extends towards the side of the sliding shaft;

the first end of the sliding rod is rotatably connected with the second end of the connecting rod, and the second end of the sliding rod extends towards the first side of the connecting rod and is positioned on the same side of the connecting rod with the rotating shaft; and

and the elastic piece is arranged in the mounting area and enables the second end of the connecting rod to always keep a tendency of swinging towards the second side of the connecting rod, and the direction of the second side of the connecting rod is opposite to that of the first side.

In the above scheme, the elastic member at least includes a first spring and a second spring, the sliding rod is constrained in the mounting region in a manner of reciprocating along the axial direction of the sliding rod, the first spring is elastically connected with the sliding rod when the second base body is turned over relative to the first base body and in a preliminary closed state, and the second spring is independently arranged relative to the sliding rod; and under the condition that the second base body is continuously closed relative to the first base body, the first spring and the second spring are both elastically connected with the sliding rod. By adopting the structure, when the second base body turns downwards relative to the first base body, the torque of the rotating shaft is smaller under the influence of the self gravity of the second base body when the second base body starts to turn downwards, and at the moment, the torque of the rotating shaft can be balanced only by adopting the first spring; along with the gradual turn-down of the second base body, the torque applied to the rotating shaft by the second base body is gradually increased, at the moment, the action of the second spring is added, the torque of the rotating shaft is balanced by utilizing the common elastic compression of the first spring and the second spring, and the stability and the reliability are better.

For the convenience of assembly, first spring housing is put in the slide bar periphery, be provided with the stopper that is used for retraining the slide bar position in the installing zone, it has the confession to open on this stopper the shaft hole that the slide bar second end passed, be provided with the spacing portion of arranging near the first end on the slide bar, the both ends of first spring respectively with stopper, spacing portion counterbalance.

Preferably, the elastic component further comprises a sliding block, a through hole for the sliding rod and the first spring to pass through is formed in the middle of the sliding block, the sliding block is sleeved on the periphery of the first spring, the second spring is sleeved on the periphery of the first spring, the first end of the second spring is restrained in the installation area, the second end of the second spring abuts against the sliding block, and a sliding groove which is matched with the side wall of the sliding block in a guiding mode and can limit the position of the sliding block is formed in the installation area of the side portion of the sliding rod. The sliding block and the sliding groove are matched with each other, so that the position of the sliding block is restrained, and the time when the second spring acts on the sliding rod is conveniently controlled.

As an improvement, the rotating shaft structure further comprises an adjusting structure capable of reducing the rotating speed of the rotating shaft when the second base body is close to the first base body, and the adjusting structure is arranged in the mounting area and connected with the middle part of the connecting rod. With such a structure, the speed of turning down the second base body is slowed when the second base body is closed relative to the first base body, thereby preventing the user from gripping the hands.

Preferably, along the first end to the second end direction of connecting rod, first lateral wall middle part of connecting rod has the first inclined plane that gradually outwards inclines, the second inclined plane that inclines gradually from first inclined plane outer end to connecting rod first lateral wall, the junction smooth transition of first inclined plane and second inclined plane, just the inclination of first inclined plane is less than the inclination of second inclined plane, be provided with in the installation area all the time with this first inclined plane or second inclined plane roll fit's roller and make this roller all the time with the actuating mechanism that corresponding inclined plane sticiss. Preferably, the mounting region is provided with a first mounting arm and a second mounting arm which are respectively positioned at the upper side and the lower side of the connecting rod, the first mounting arm and the second mounting arm are correspondingly provided with long holes which are arranged along the length direction at positions close to the connecting rod, a connecting shaft vertically penetrates through the long holes on the first mounting arm and the second mounting arm to be arranged, the roller can be rotatably sleeved on the connecting shaft, and the shell is further provided with a third spring which can enable the connecting shaft to move towards the connecting rod all the time so that the roller and the first inclined surface or the second inclined surface of the connecting rod are kept in rolling fit. By adopting the structure, in the process that the second base body turns downwards relative to the first base body gradually, the roller rolls gradually along the first inclined plane and the second inclined plane towards the terminal end of the second inclined plane by matching with the starting end of the first inclined plane, and when the roller slides outwards gradually along the first inclined plane, the roller can be matched and superposed with the elastic force of the first spring and the second spring to strengthen the counteracting effect on the torque of the rotating shaft, so that the turning-down speed of the door body is slowed down, and the fingers of a person are prevented from extending into the gap to clamp the hand when the second base body falls to the position; after the roller slides on the first inclined plane, because the slope between the second inclined plane and the second side wall of the connecting rod is very steep and close to a right angle, the roller can rapidly slide on the second inclined plane and is positioned at the joint of the end point end of the second inclined plane and the side wall of the connecting rod, at the moment, the door body is completely closed, the joint of the end point end of the second inclined plane and the side wall of the connecting rod can be matched with the third spring to provide a certain limiting effect for the roller, namely, the instant difficulty of opening the door body is increased, and when the roller is applied to a cleaning machine, the roller is helpful for preventing the cleaning machine from spraying human bodies on the front surface of hot water (hot air.

In order to facilitate assembly, a limiting column capable of vertically reciprocating along the axial direction of the connecting shaft is arranged on the outer side of the connecting shaft, the outer end of the limiting column can be movably arranged on the shell, a clamping jaw which extends towards the connecting shaft and clamps two ends of the connecting shaft is arranged at the second end of the limiting column, and the roller can be rotatably arranged between the two clamping jaws.

In each of the above solutions, the central portion of the first end of the sliding shaft is provided with a shaft hole extending along the axial direction, and correspondingly, the central portion of the second end of the rotating shaft is provided with a shaft extending along the axial direction and capable of being inserted into and connected with the shaft hole and being in running fit with the shaft hole; the utility model discloses a sliding shaft, including the first tooth portion of pivot first end, the top surface of first tooth portion and the top surface of second tooth portion are formed into the plane that can support each other, and the first end of slide shaft has the second tooth portion that can mesh mutually with this first tooth portion, the top surface of first tooth portion and the top surface of second tooth portion correspond and form the plane that can support each other and lean on, are formed with the first tooth's socket that supplies second tooth portion card to go into between two adjacent first tooth portions, be formed with the second tooth's socket that supplies first tooth portion card to go into between two adjacent second tooth portions, the side of first tooth's socket and the side of second tooth's socket take shape respectively and are for the inclined plane that expands. By adopting the structure, the circumferential rotation of the rotating shaft is converted into the axial movement of the sliding shaft.

Preferably, the gasket that can reduce the friction and agree with mutually with pivot second terminal surface structure is held to the centre gripping between pivot second end and the slide-shaft second end, it has the first slide along circumference extension to open on the terminal surface of pivot second end, it has the second slide along circumference extension to open on the terminal surface of the first end of slide-shaft, and is corresponding, correspond respectively on the both ends face of gasket and be provided with can with corresponding first slide, the gliding pearl of second slide direction complex. The structure can reduce the friction between the rotating shaft and the sliding shaft, and the rotating shaft and the sliding shaft can move more smoothly and stably in a matched mode through the matching of the slide way and the sliding balls.

The utility model provides an use cleaning machine that has above-mentioned damping pivot structure, includes the box and the door body, the box has the washing chamber and communicates in the last port at this washing chamber top, the edge of door body rotates the edge of connecting port on the box, its characterized in that: the box body forms the first base body, the door body forms the second base body, the fixed shaft is installed at the edge of the upper end opening of the box body, and the rotating shaft and other rotating shaft regulating and controlling structures are installed at the edge of the door body.

Compared with the prior art, the invention has the advantages that: the torque of the rotating shaft can be continuously increased in the downward turning process of the second base body, the circumferential rotation of the rotating shaft can be converted into the axial movement of the sliding shaft by the conversion structure, the sliding shaft can realize the force transmission with the elastic part through the connecting rod and the sliding rod in the movement process, so that a certain torque is continuously offset by the elastic part when the torque of the rotating shaft is increased, and the torque of the rotating shaft can be adjusted in real time according to the downward turning state of the panel along with the gradual compression or extension of the elastic part, so that the downward turning speed of the panel is controlled, and the damping effect is improved; the cleaning machine can effectively adjust the downward turning speed when the door body is closed, and improves the user experience.

Drawings

FIG. 1 is a schematic structural diagram of a cleaning machine according to an embodiment of the present invention;

FIG. 2 is a schematic view of a damping spindle structure according to an embodiment of the present invention (door open state);

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is another cross-sectional view of FIG. 2;

FIG. 5 is a schematic structural diagram of a slide shaft according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention;

FIG. 7 is a schematic view of the damping spindle structure according to the embodiment of the present invention (door closed state);

FIG. 8 is a schematic diagram of a structure of a connecting rod and a sliding column according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

The damping rotating shaft structure of the present embodiment can be applied to any structure that can be turned over or closed relatively, and for convenience of describing the structure, the present embodiment takes a water tank type cleaning machine as an example to describe the damping rotating shaft structure.

As shown in fig. 1 to 8, the damping rotation shaft structure of the present embodiment includes a fixing shaft 1, a rotation shaft 2, a housing 3, a sliding shaft 4, a conversion structure 5, a connecting rod 6, a sliding rod 7 and an elastic member 8, wherein the fixing shaft 1 is installed at an opening edge of a first base 10, the first base 10 of the present embodiment is a box, and a first end of the rotation shaft 2 is fixedly connected to an end of the fixing shaft 1 through a screw.

The housing 3 is mounted on a second base 20 that can be turned over relative to the cabinet, the second base 20 of this embodiment is a door, the housing 3 has a hollow mounting region 30, and the second end of the rotating shaft 2 penetrates through a side wall of the housing 3 and extends into the mounting region 30. The slide shaft 4 is disposed in the mounting region 30 so as to be axially movable along the rotation shaft 2, and a first end of the slide shaft 4 is disposed corresponding to a second end of the rotation shaft 2. The conversion structure 5 is disposed between the second end of the rotating shaft 2 and the first end of the sliding shaft 4, and is configured to convert the circumferential rotation of the rotating shaft 2 into the axial movement of the sliding shaft 4. The first end of the connecting rod 6 is rotatably connected to the second end of the sliding shaft 4, the connecting rod 6 is connected with the sliding shaft 4 through a connecting shaft and a waist-shaped hole in a matched mode, the middle of the connecting rod 6 is limited on the shell 3 in a position deviated from the first end of the connecting rod 6 in a rotatable mode through a shaft 60, and the second end of the connecting rod 6 extends towards the side of the sliding shaft 4. The first end of the sliding rod 7 is rotatably connected with the second end of the connecting rod 6, and the sliding rod 7 and the connecting rod 6 are connected with the kidney-shaped hole in a matched mode through a connecting shaft. The second end of the sliding rod 7 extends to the first side of the connecting rod 6 and is located on the same side of the connecting rod 6 as the rotating shaft 2. The resilient member 8 is disposed in the housing 3 and acts to counteract torque on the shaft 2 when compressed. The elastic element 8 also keeps the second end of the link 6 always having a tendency to swing towards its second side, which is opposite to the first side of the link 6.

In this embodiment, the elastic member 8 includes a first spring 81, a second spring 82 and a slider 83, the sliding rod 7 is constrained in the installation area 30 in a manner of reciprocating along the axial direction of the sliding rod 7, when the door body is turned over relative to the refrigerator body and turned over to the initial closed state, the first spring 81 is elastically connected with the sliding rod 7, and the second spring 82 is independently arranged relative to the sliding rod 7; when the door body turns downwards relative to the box body by a certain angle and continues to turn downwards, the first spring 81 and the second spring 82 are both elastically connected with the sliding rod 7. Specifically, the first spring 81 is sleeved on the periphery of the slide rod 7, the mounting region 30 is provided with a limiting block 31 for limiting the position of the slide rod 7, the limiting block 31 is provided with a shaft hole 311 for the second end of the slide rod 7 to pass through, the slide rod 7 is provided with a limiting portion 71 arranged close to the first end, and two ends of the first spring 81 respectively abut against the limiting block 31 and the limiting portion 71, so that the second end of the connecting rod 6 always tends to swing towards the second side thereof. The middle part of the sliding block 83 is provided with a through hole 831 for the sliding rod 7 and the first spring 81 to pass through, the sliding block 83 is sleeved on the periphery of the first spring 81, the second spring 82 is sleeved on the periphery of the first spring 81, the first end of the second spring abuts against the limiting block 31, the second end of the second spring abuts against the sliding block 83, the shell 3 at the side part of the sliding rod 7 is provided with a sliding groove 32 which is matched with the side wall of the sliding block 83 in a guiding manner and can limit the position of the sliding block 83, the structure can limit the position of the sliding block 83, and the time for the second spring 82 to act on the sliding rod. By adopting the structure, when the door body turns downwards relative to the box body, the torque of the rotating shaft 2 is smaller under the influence of the gravity of the door body, when the door body just starts to turn downwards, the torque of the rotating shaft 2 can be balanced only by adopting the first spring 81, so that at the moment, under the limiting action of the sliding groove 32 on the sliding block 83, the second spring 82 is not contacted with the limiting part 71; along with the gradual turn-down of the door body, the torque applied to the rotating shaft 2 by the door body is gradually increased, at the moment, after the first spring 81 compresses one end length, the second spring 82 is contacted with the limiting part 71 and is gradually compressed along with the swinging of the connecting rod 6, so that the torque of the rotating shaft 2 is balanced by the common elastic compression of the first spring 81 and the second spring 82, and the stability and the reliability are better.

The rotating shaft structure of the embodiment further comprises an adjusting structure 9 capable of reducing the rotating speed of the rotating shaft 2 when the door body is about to be closed relative to the box body, wherein the adjusting structure 9 is arranged in the mounting area 30 and connected with the middle part of the connecting rod 6, so that the downward turning speed of the door body is reduced when the door body is about to be closed relative to the box body, and therefore the user is prevented from clamping hands.

Specifically, along the direction from the first end to the second end of the connecting rod 6, the middle part of the first side wall of the connecting rod 6 is provided with a first inclined surface 61 which gradually inclines outwards, a second inclined surface 62 which gradually inclines from the outer end of the first inclined surface 61 to the first side wall of the connecting rod 6, the joint of the first inclined surface 61 and the second inclined surface 62 is in smooth transition, the inclination of the first inclined surface 61 is smaller than that of the second inclined surface 62, a roller 63 which is always in rolling fit with the first inclined surface 61 or the second inclined surface 62 and a driving mechanism 64 which enables the roller 63 to be always tightly abutted against the corresponding inclined surface are arranged in the mounting area 30. The driving mechanism 64 includes a first mounting arm 641, a second mounting arm 642, a connecting shaft 643, and a third spring 644, wherein the first mounting arm 641 and the second mounting arm 642 are respectively located at the upper side and the lower side of the connecting rod 6 and are fixed on the housing 3, the first mounting arm 641 and the second mounting arm 642 are correspondingly provided with long holes 640 arranged along the length direction at positions close to the connecting rod 6, the connecting shaft 643 is vertically arranged through the long holes 640 of the first mounting arm 641 and the second mounting arm 642, the roller 63 is rotatably sleeved on the connecting shaft 643, and the third spring 644 makes the connecting shaft 643 always move towards the connecting rod 6, so that the roller 63 keeps a tendency of rolling fit with the first inclined surface 61 or the second inclined surface 62 of the connecting rod 6. For convenience of assembly, a stopper column 645 capable of reciprocating in the axial direction of the connecting shaft 643 is provided outside the connecting shaft 643, an outer end of the stopper column 645 is inserted in the housing 3 so as to be capable of reciprocating in the axial direction, a second end of the stopper column 645 has a claw 6451 extending toward the connecting shaft 643 and holding both ends of the connecting shaft 643 therebetween, and the roller 63 is rotatably provided between the two claws 6451. By adopting the structure, in the process that the door body is gradually turned downwards relative to the box body, the roller 63 gradually rolls towards the terminal end of the second inclined plane 62 along the first inclined plane 61 and the second inclined plane 62 from the matching with the starting end of the first inclined plane 61, and when the roller 63 gradually slides outwards the connecting rod 6 along the first inclined plane 61, the roller can be matched and superposed with the elastic force of the first spring 81 and the second spring 82 to strengthen the offsetting effect on the torque of the rotating shaft 2, so that the turning-down speed of the door body is slowed down, and the fingers of a person are prevented from extending into the gap between the door body and the box body to clamp hands when the door body falls to the position; after the roller 63 slides over the first inclined surface 61, because the gradient between the second inclined surface 62 and the second side wall of the connecting rod 6 is very steep and close to a right angle, the roller 63 can quickly slide over the joint of the end point end of the second inclined surface 62 and the side wall of the connecting rod 6, at the moment, the door body is completely closed, the joint of the end point end of the second inclined surface 62 and the side wall of the connecting rod 6 can be matched with the third spring 644 to provide a certain limiting effect for the roller 62, namely, the instant difficulty of opening the door body is increased, and when the roller is applied to a cleaning machine, the roller is helpful for preventing the cleaning machine from spraying human bodies on the front surface of internal hot water (hot air) in the cleaning process, and the.

In this embodiment, the central portion of the first end of the sliding shaft 4 is provided with a shaft hole 400 extending along the axial direction, and correspondingly, the central portion of the second end of the rotating shaft 2 is provided with a shaft 200 extending along the axial direction and capable of being inserted, connected and rotationally matched with the shaft hole 40. The second end of the rotating shaft 2 is formed with at least two first tooth portions 21 arranged at intervals along the circumferential direction, correspondingly, the first end of the sliding shaft 4 is provided with a second tooth portion 41 capable of meshing with the first tooth portion 21, the top surface 211 of the first tooth portion 21 and the top surface 411 of the second tooth portion 41 are correspondingly formed into planes capable of abutting against each other, a first tooth slot 212 for the second tooth portion 41 to be clamped is formed between every two adjacent first tooth portions 21, a second tooth slot 412 for the first tooth portion 21 to be clamped is formed between every two adjacent second tooth portions 41, and the side edge 213 of the first tooth slot 212 and the side edge 413 of the second tooth slot 412 are respectively formed into inclined planes gradually expanding outwards from the bottom to the corresponding top surfaces. With the above structure, the circumferential rotation of the rotating shaft 2 is converted into the axial movement of the sliding shaft 4. The gasket 51 which can reduce friction and is matched with the structure of the second end face of the rotating shaft 2 is clamped between the second end of the rotating shaft 2 and the second end of the sliding shaft 4, the first slide way 22 extending along the circumferential direction is arranged on the end face of the second end of the rotating shaft 2, the second slide way 42 extending along the circumferential direction is arranged on the end face of the first end of the sliding shaft 4, correspondingly, sliding balls 511 which can be matched with the corresponding first slide way 22 and the second slide way 42 in a guiding manner are correspondingly arranged on the two end faces of the gasket 51, the structure can reduce the friction between the rotating shaft 2 and the sliding shaft 4, and the rotating shaft 2 and the sliding shaft 4 can be matched and move more smoothly and stably through the matching of the slide ways and the sliding balls. The first tooth portion 41, the second tooth portion 41, and the spacer 51 together constitute the conversion structure 5.

The cleaning machine with the damping rotating shaft structure comprises a box body 10 and a door body 20, wherein the box body 10 is provided with a washing cavity and an upper port communicated with the top of the washing cavity, one edge of the door body 20 is rotatably connected to the edge of the upper port of the box body 10, a fixing shaft 1 is arranged at the edge of the upper port of the box body 10, and a rotating shaft 2 and other rotating shaft regulating and controlling structures are arranged at the edge of the door body 20.

The cleaning machine of the embodiment is used, the torque of the rotating shaft 2 can be continuously increased in the downward turning process of the door body, the conversion structure 5 can convert the circumferential rotation of the rotating shaft 2 into the axial movement of the sliding shaft 4, the sliding shaft 4 is in force transmission with the elastic part 8 through the connecting rod 6 and the sliding rod 7 in the moving process, so that certain torque is continuously offset through the elastic part 8 when the torque of the rotating shaft 2 is increased, along with the gradual compression or extension of the elastic part 8, the torque of the rotating shaft 2 can be adjusted in real time according to the downward turning state of the panel, the downward turning speed of the control panel is increased, the damping effect is improved, the downward turning speed when the door body is closed is effectively adjusted, and the user experience is improved.