阅读说明：本技术 一种闭门器 (Door closer ) 是由 赖明亮 张飞飞 张静 于 2020-08-05 设计创作，主要内容包括：本发明提供一种闭门器,包括第一连接板和第二连接板,该第一连接板和第二连接板分别连接外部门框和门体连接部,门体连接部内安装有液压杆、连杆组件和复位弹簧,第一连接板上固定有连接座,连杆组件的一端穿过第一连接板与第二连接板后固定在连接座上；开门时,外部门体带动第一连接板与第二连接板翻转,连杆组件移动后带动液压杆和复位弹簧收缩,关门时复位弹簧带动门体自动关闭。本发明一种闭门器,连接座与门体连接部之间通过连杆组件连接,门体在打开时会带动连杆移动,同时由连杆通过底座带动液压杆和弹簧收缩,导滑块上还设有用于定位的定位凸台,可将打开后的门体固定,关门时液压杆与弹簧展开可带动门体自动关闭。(The invention provides a door closer, which comprises a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are respectively connected with an external door frame and a door body connecting part; when the door is opened, the external door body drives the first connecting plate and the second connecting plate to overturn, the connecting rod assembly drives the hydraulic rod and the reset spring to contract after moving, and the reset spring drives the door body to be automatically closed when the door is closed. According to the door closer, the connecting seat is connected with the connecting part of the door body through the connecting rod assembly, the connecting rod can be driven to move when the door body is opened, meanwhile, the hydraulic rod and the spring are driven to contract through the base through the connecting rod, the guide sliding block is further provided with the positioning boss for positioning, the opened door body can be fixed, and the hydraulic rod and the spring can be unfolded to drive the door body to be automatically closed when the door is closed.)

1. A door closer characterized by: the door comprises a first connecting plate (3) and a second connecting plate (4), wherein the first connecting plate (3) is connected with an external door frame, the second connecting plate (4) is connected with a door body connecting part, a connecting rod assembly and a reset spring (2) are installed in the door body connecting part, and one end of the connecting rod assembly penetrates through the second connecting plate (4) and then is hinged to the first connecting plate (3); when the door is opened, the external door body drives the first connecting plate (3) and the second connecting plate (4) to overturn, the connecting rod assembly pulls the door body connecting part to enable the reset spring (2) to be compressed, and when the door is closed, the reset spring (2) pushes the door body to be automatically closed.

2. A door closer according to claim 1, wherein: the door body connecting part further comprises a shell (6), and a base (8) is installed in the shell (6).

3. A door closer according to claim 2, wherein: one end of the shell (6) is symmetrically provided with guide sliding blocks (7), and the guide sliding blocks (7) are fixed on the second connecting plate (4).

4. A door closer according to claim 3, wherein: and a hydraulic rod (1) is also arranged in the shell (6).

5. A door closer according to claim 4, wherein: the guide sliding block (7) is provided with a through hole (16), one end of the hydraulic rod (1) and one end of the return spring (2) are arranged in the through hole (16), and the other ends of the hydraulic rod (1) and the return spring (2) are connected with the base (8).

6. A door closer according to claim 5, wherein: the base (8) is fixedly provided with a hinged seat (11), and the connecting rod assembly is hinged to the hinged seat (11).

7. A door closer according to claim 6, wherein: the connecting rod component is divided into a curved rod (9) and a connecting rod (10), and two ends of the connecting rod (10) are respectively hinged to the hinging seat (11) and the curved rod (9).

8. A door closer according to claim 7, wherein: the first connecting plate (3) is fixed with a connecting seat (5).

9. A door closer according to claim 8, wherein: through grooves (17) are symmetrically formed in the first connecting plate (3) and the second connecting plate (4), and the bent rod (9) penetrates through the through grooves (17) and then is hinged to the connecting seat (5).

10. A door closer according to claim 7, wherein: rolling bearings (12) are symmetrically arranged at the connecting position of the curved rod (9) and the connecting rod (10).

11. A door closer according to claim 10, wherein: the guide sliding block (7) is provided with a guide groove (13), and the rolling bearing (12) is arranged in the guide groove (13).

12. A door closer according to claim 11, wherein: the guide groove (13) is an oblique guide groove, and an arc-shaped guide surface (14) is arranged on the guide groove (13).

13. A door closer according to claim 11, wherein: the guide sliding block (7) is further provided with a positioning boss (15), and the positioning boss (15) is provided with an arc surface.

14. A door closer according to claim 7, wherein: and a first bending part (18) and a second bending part (19) are respectively arranged at two ends of the curved rod (9).

15. A door closer according to claim 4, wherein: the hydraulic rod (1) is provided with a speed regulating switch (20).

16. A door closer according to claim 1, wherein: the first connecting plate (3) and the second connecting plate (4) are hinged.

17. A door closer according to claim 4, wherein: the two sides of the hydraulic rod (1) are provided with the return springs (2).

18. A door closer according to claim 4, wherein: the hydraulic rod type hydraulic cylinder is characterized in that a first cavity (21) is arranged on the shell (6), second cavities (22) are symmetrically arranged on two sides of the first cavity (21), the hydraulic rod (1) is arranged in the first cavity (21), and the reset spring (2) is arranged in the second cavities (22).

19. A door closer according to claim 4, wherein: still be equipped with spout (23) on casing (6), base (8) are arranged in spout (23).

20. A door closer according to claim 2, wherein: the connecting rod assemblies are symmetrically arranged on two sides of the shell (6).

21. A door closer according to claim 11, wherein: a second guide sliding block (24) is further arranged between the guide sliding blocks (7), and the guide grooves (13) are formed in the two sides of the second guide sliding block (24).

Technical Field

The invention relates to the technical field of door body hinges, in particular to a door closer.

Background

The hinge for the traditional door is a folding hinge, and the main hinge and the auxiliary hinge are fixedly installed on a door frame and a door plate after being hinged, so that the door cannot be buffered, and the speed of closing the door cannot be controlled. When the door is closed, if large external force exists, the door plate and the door frame collide violently to generate large sound, and the violent collision easily causes overlarge interaction force between the door plate and the door frame, easily causes damage to the door plate or the door frame, influences the service life of the door frame and the door plate, and has certain potential safety hazard. In order to avoid various defects of the folding hinge, the hinge for the door, which has a buffering effect on the door closing, is gradually developed on the market, namely the door closer.

However, the door closer in the prior art mostly adopts a direct-push type buffer, a one-way damper, a spiral structure and a hydraulic mechanism to realize buffering door closing. The direct-push type buffer needs to be installed on a door in a punching way, is complex to install and has limited application range; the one-way damper has long working time in the door closing stroke, and the frequent times of door avoidance can reach the service life cycle of the one-way damper, so that the door closing buffering function is lost; the buffering hinge adopting the spiral structure has a complex structure, is difficult to process and has no door stop function; the existing door closer adopts a buffer hinge of a hydraulic mechanism, which often has the problem of oil leakage and is not provided with a door stop function.

Disclosure of Invention

The technical problem to be solved.

The invention aims to solve the technical problem of providing a door closer to overcome the problems that the door closer in the prior art has a single function and cannot play a role in buffering and protecting a door body.

The second technical proposal.

In order to solve the technical problems, the invention provides a door closer which comprises a first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are hinged, a door body connecting part is fixed on the second connecting plate and used for connecting an external door body, the first connecting plate is used for connecting a door frame, a hydraulic rod, a connecting rod assembly and a reset spring are installed in the door body connecting part, a connecting seat is fixed on the first connecting plate, one end of the connecting rod assembly penetrates through a hinge and then is fixed on the connecting seat, and the connecting rod assembly can be pulled when the first connecting plate and the second connecting plate are opened; the door body connecting part further comprises a shell and guide sliding blocks symmetrically installed at one end of the shell, the guide sliding blocks play a role of guiding the connecting rod assembly to slide, a base is fixed at the other end of the shell, the hydraulic rod, the connecting rod assembly and the reset spring are all installed on the base, and the hydraulic rod and the reset spring are respectively arranged on two sides of the connecting rod assembly; the connecting rod assembly is divided into a curved rod, a connecting rod and a hinge seat, the hinge seat is mounted on the base, the connecting rod is hinged to the hinge seat, one end of the curved rod is hinged to the connecting rod, and the other end of the curved rod is connected with the connecting seat; when the door is opened, the external door body drives the first connecting plate and the second connecting plate to overturn, the curved rod slides along the guide sliding block under the action of the first connecting plate, so that the base is pulled to move through the connecting rod, and the hydraulic rod and the reset spring are further driven to contract.

Further, rolling bearings are symmetrically installed at the connecting position of the curved rod and the connecting rod, a guide groove is formed in the guide sliding block, the rolling bearings are arranged in the guide groove, an arc-shaped guide surface is formed in the guide groove, a positioning boss is further arranged on the guide sliding block, an arc surface is arranged on the positioning boss, the function of reinforcing positioning is achieved, the door body is prevented from shaking, when the door is opened, the rolling bearings slide along the guide groove, the arc-shaped guide surface can drive the rolling bearings to deflect downwards and then clamp the rolling bearings on the positioning boss, the positioning effect is achieved, the opened door body can be automatically positioned, after the limitation of the positioning boss is overcome through external force, the rolling bearings can return to the guide groove, at the moment, the reset springs drive the hinges to reset, the door body is automatically closed under the pulling of the hinges, and the hydraulic rod can provide resistance, the buffer function is achieved, and the door body is prevented from being damaged by collision.

Furthermore, a through hole is formed in the guide sliding block, one end of the hydraulic rod and one end of the return spring are arranged in the through hole, through grooves are symmetrically formed in the first connecting plate and the second connecting plate, and the bent rod penetrates through the through grooves and then is connected to the connecting seat.

Furthermore, the both ends of curved bar are equipped with first portion of bending and the portion of bending of second respectively, first portion of bending with the portion of bending of second is connected respectively the connecting seat with the connecting rod, be equipped with the speed governing switch on the hydraulic stem, the speed governing switch is adjustable the flexible speed of hydraulic stem, thereby control the resistance that the hydraulic stem provided.

Furthermore, the two sides of the hydraulic rod are provided with the reset springs, the connecting rod assemblies are symmetrically arranged on the two sides of the shell, the shell is provided with a first cavity, the two sides of the first cavity are symmetrically provided with a second cavity, the hydraulic rod is arranged in the first cavity, the reset springs are arranged in the second cavity, the shell is further provided with a sliding groove, and the base is arranged in the sliding groove.

Furthermore, a second guide sliding block is arranged between the guide sliding blocks, and the guide grooves are formed in the two sides of the second guide sliding block.

(III) the beneficial effects.

The invention relates to a door closer, wherein a first connecting plate and a second connecting plate are respectively provided with a connecting seat and a door body connecting part and are respectively fixed in a door frame and a door body, hinges are arranged in a hidden mode and cannot influence the appearance of the door body, the connecting seat is connected with the door body connecting part through a connecting rod assembly, the door body can drive the connecting rod to move when being opened, meanwhile, the connecting rod drives a hydraulic rod and a spring to contract through a base, a positioning boss for positioning is further arranged on a guide sliding block and can fix the opened door body, and the hydraulic rod and the spring can be unfolded to drive the door body to be automatically closed when the door.

Drawings

Fig. 1 is a perspective view of a closed state of an embodiment of a door closer of the present invention.

Fig. 2 is a perspective view of an embodiment of a door closer of the present invention with the first link plate removed.

Fig. 3 is a perspective view of an internal structure of a door body connecting part according to an embodiment of the door closer.

Fig. 4 is a perspective view of a slider guide and a curved bar according to an embodiment of the door closer of the present invention.

Fig. 5 is an exploded view of a slider guide and a curved bar according to an embodiment of the door closer of the present invention.

Fig. 6 is a perspective view of a guide block of an embodiment of a door closer of the present invention.

Fig. 7 is a perspective view of a hydraulic lever according to an embodiment of the door closer of the present invention.

Fig. 8 is a perspective view showing a half-open state of an embodiment of a door closer of the present invention.

Fig. 9 is a perspective view of a door closer according to an embodiment of the present invention in a fully opened state.

Fig. 10 is a perspective view of a door closer according to an embodiment of the present invention in a closed state.

Fig. 11 is a perspective view of the internal structure of a second embodiment of the door closer of the present invention.

Fig. 12 is a perspective view of a second housing of an embodiment of a door closer of the present invention.

Fig. 13 is a perspective view of a door closer according to an embodiment of the present invention in a three-open state.

Fig. 14 is a perspective view of a third second guide slider and a curved bar according to an embodiment of the door closer of the present invention.

Wherein: 1 is the hydraulic stem, 2 is reset spring, 3 is first connecting plate, 4 is the second connecting plate, 5 is the connecting seat, 6 is the casing, 7 is leading the slider, 8 is the base, 9 is the curved bar, 10 is the connecting rod, 11 is articulated seat, 12 is antifriction bearing, 13 is the guide way, 14 is the arc spigot surface, 15 is the location boss, 16 is the through-hole, 17 is the logical groove, 18 is first portion of bending, 19 is the second portion of bending, 20 is speed governing switch, 21 is first cavity, 22 is the second cavity, 23 is the spout, 24 is the second and leads the slider.

Detailed Description