Connecting structure of door closer and sliding rail

Abstract

The door closer and sliding rail connecting structure comprises a sliding rail and a force arm, a sliding block is arranged in the sliding rail, one end of the force arm is rotationally hinged to the sliding block, a plug pin hole is formed in the sliding block, a clamping spring groove is formed in the inner ring wall of the plug pin hole, and a clamping spring is arranged in the clamping spring groove; a bolt is fixedly connected to one end of the force arm, a clamping groove is formed in the outer ring wall of the bolt, and the bolt inserted into the bolt hole is clamped into the clamping groove through a clamping spring, so that the bolt and the sliding block are assembled and connected; according to the connecting structure, the clamping spring is matched with the clamping groove, so that the force arm can be quickly connected with the sliding block, the assembling steps are reduced, the assembling efficiency of the door closer can be improved, after the plug pin is clamped into the plug pin hole, the elastic clamping spring can keep a stable clamping effect, and the situations of loosening, even loosening and the like cannot occur after long-term use.

Description

Technical Field

[0001] The utility model relates to the field of door closers, specifically to a connection structure between a door closer and a slide rail. Background Art

[0002] Currently, the structure of the door closer is as Figure 1 shown, mainly including a slide rail a and a lever b. A slider c is arranged in the slide rail. An internal thread hole c1 is opened on the slider. A through hole b1 is opened at one end of the lever corresponding to the internal thread hole. The lever is rotationally hinged to the slider by passing an internal hexagon bolt d through the through hole and the internal thread hole. The other end of the lever is rotationally hinged to the door closer body. However, the lever is connected to the slider by bolts. On the one hand, the installation process is time-consuming. When installing the bolts, there are many operation steps. The bolt placed in the through hole needs to be aligned with the internal thread hole and then repeatedly screwed. On the other hand, when using bolt connection for a long time, problems such as bolt loosening and wear of the bolt threads are likely to occur. Therefore, the connection structure between the door closer and the slide rail needs to be further improved. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the above existing problems, and provide a connection structure between a door closer and a slide rail with a simple and reasonable structure, whose function is to enable the lever to be quickly connected to the slider.

[0004] The connection structure between the door closer and the slide rail includes a slide rail and a lever. A slider is arranged in the slide rail. One end of the lever is rotationally hinged to the slider. An insertion pin hole is opened on the slider. A snap ring groove is opened on the inner ring wall of the insertion pin hole, and a snap ring is arranged in the snap ring groove; a plug pin is fixedly connected to one end of the lever. A card slot is opened on the outer ring wall of the plug pin. The plug pin inserted into the insertion pin hole is clamped into the card slot by the snap ring, realizing the assembly connection between the plug pin and the slider.

[0005] The utility model can also adopt the following technical measures to solve:

[0006] As a more specific solution, a circumferentially arranged guiding inclined surface is opened at the front end of the plug pin.

[0007] As a further solution, a stop end face is arranged on one side of the card slot close to the front end of the plug pin, and the stop end face is in abutting cooperation with the snap ring.

[0008] As a further solution, the stop end face also constitutes a guiding surface for removing the plug pin, and the guiding surface is inclined outward.

[0009] As a further solution, the snap ring groove is opened on one side close to the orifice of the insertion pin hole.

[0010] As a further solution, the slider includes a sliding seat formed of a plastic material and a coupling head made of a metal material. The sliding seat is integrally formed with the coupling head by injection molding, and a pin hole is provided in the coupling head.

[0011] As a further solution, at least one circle of inner grooves is provided on the outer ring wall of the coupling head, and the inner grooves are injection molded in the sliding seat; two anti-rotation end faces are provided on the opposite sides of the outer ring wall of the coupling head, and the anti-rotation end faces are injection molded in the sliding seat.

[0012] As a further solution, an obtuse angle A is formed between the guiding surface and the bottom of the clamping groove, and 90° < A ≤ 130°.

[0013] As a further solution, the rear end of the pin is welded to the force arm, or the rear end of the pin is threadedly connected to the force arm, or the rear end of the pin is riveted to the force arm.

[0014] As a further solution, it further includes a door closer body, and the other end of the force arm is rotatably hinged to the door closer body.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The connection structure between the door closer and the slide rail of the present utility model. Through the cooperation of the snap ring and the clamping groove, the force arm can be quickly connected to the slider, reducing the assembly steps, improving the assembly efficiency of the door closer, and after the pin is inserted into the pin hole, the elastic snap ring can maintain a stable clamping effect and will not loosen or even become loose after long-term use. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the background technology in the present utility model.

[0018] Figure 2 It is a schematic structural diagram of an embodiment in the present utility model.

[0019] Figure 3 It is a schematic cross-sectional structural diagram of the present utility model.

[0020] Figure 4 It is a schematic exploded structural diagram of the present utility model.

[0021] Figure 5 It is a schematic structural diagram of the coupling head in the present utility model.

[0022] Figure 6 It is a schematic structural diagram of the guiding surface in the present utility model.

[0023] Figure 7 It is a schematic structural diagram of the pin deviation installation in the present utility model. Detailed Description of the Invention

[0024] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] As Figures 2 to 7 shown, the connection structure between the door closer and the slide rail includes a slide rail 1 and a lever arm 2. A slider 3 is arranged inside the slide rail 1. One end of the lever arm 2 is rotationally hinged to the slider 3. A pin hole 301 is formed on the slider 3, and a snap ring groove 302 is formed on the inner circumferential wall of the pin hole 301. A snap ring 4 is arranged in the snap ring groove 302. One end of the lever arm 2 is fixedly connected with a pin 5. A card slot 501 is formed on the outer circumferential wall of the pin 5. The pin 5 inserted into the pin hole 301 is clamped into the card slot 501 through the snap ring 4, realizing the assembly connection between the pin 5 and the slider 3.

[0026] Through the cooperation of the snap ring 4 and the card slot 501, this connection structure enables the lever arm 2 to be quickly connected to the slider 3, reducing the assembly steps and improving the assembly efficiency of the door closer.

[0027] In addition, in the traditional bolt connection method, the installation and removal direction of the bolt and the relative movement direction of the lever arm 2 and the slider 3 during use are both circumferential movements. Therefore, looseness is likely to occur after long-term use. In this application, since the movement direction (axial installation) of the pin 5 when installed in the pin hole 301 is different from the relative movement direction (circumferential movement) of the lever arm 2 and the slider 3 during use, after the pin 5 is inserted into the pin hole 301, the elastic snap ring 4 can maintain a stable clamping effect and will not loosen or even become loose after long-term use.

[0028] In addition, an interference fit is formed between the pin hole 301 and the pin 5, and between the snap ring 4 and the snap ring groove 302. Even during the installation process or use process, if there is a slight deviation in the installation angle between the two (as shown in Figure 7 shown, the central axes of the pin 5 and the pin hole 301 are cross-set, and the central axes of the snap ring 4 and the snap ring groove 302 are cross-set), but the adjustment space formed by the interference fit does not affect its normal use, can reduce the installation accuracy requirements, and is more convenient for installation.

[0029] A circumferentially arranged guiding inclined surface 502 is formed at the front end of the pin 5. The guiding inclined surface 502 is in interference fit with the snap ring 4. The guiding inclined surface 502 is used to assist the pin 5 in inserting into the pin hole 301. During the installation process, when the pin 5 is inserted into the pin hole 301, the guiding inclined surface 502 pushes the snap ring 4 outwards. The snap ring 4 has a deformation amount after being radially stressed until it is installed in the card slot 501.

[0030] On one side of the card slot 501 close to the front end of the bolt 5, a stop end face 503 is provided, and the stop end face 503 is in abutting cooperation with the circlip 4; after the bolt 5 is installed in place, the stop end face 503 can limit the bolt 5 by abutting, preventing the bolt 5 from being easily pulled out.

[0031] When the lever arm 2 needs to be disassembled from the slider 3, the stop end face 503 also constitutes a guiding surface for disassembling the bolt 5, and the guiding surface is inclined outward. When the bolt 5 is pulled outwards, the inclined guiding surface also expands the circlip 4 outwards, and the circlip 4 has a deformation amount after being radially stressed until it leaves the card slot 501.

[0032] The circlip groove 302 is opened on one side close to the orifice of the bolt hole 301; this structure facilitates the assembly of the circlip 4 into the circlip groove 302.

[0033] The slider 3 includes a slide base 31 formed of a plastic material and a coupling head 32 made of a metal material. The slide base 31 is integrally formed with the coupling head 32 by injection molding, and a bolt hole 301 is opened in the coupling head 32; when the plastic slide base 31 forms a sliding fit with the slide rail 1, the friction between metals can be reduced, avoiding abnormal noises. The coupling head 32 is made of a metal material, which can increase the strength of the bolt hole 301 and the circlip groove 302, avoiding problems such as easy deformation of the plastic material.

[0034] At least one circle of inner grooves 321 is provided on the outer ring wall of the coupling head 32, and the inner grooves 321 are injection molded in the slide base 31; the inner grooves 321 ensure that the injection molding material can enter the inside of the coupling head 32 to fasten it in multiple layers, making the connection between the coupling head 32 and the slide base 31 more firm, effectively ensuring the contact force and anti-torsion force between the coupling head 32 and the slide base 31 after injection molding;

[0035] On the opposite sides of the outer ring wall of the coupling head 32, two anti-rotation end faces 322 are opened, and the anti-rotation end faces 322 are injection molded in the slide base 31. The anti-rotation end faces 322 prevent the rotation of the coupling head 32 caused by large torque during use, ensuring that the coupling head 32 does not loosen.

[0036] An obtuse angle A is formed between the guiding surface and the bottom of the card slot 501, and 90° < A ≤ 130°; in this embodiment, the obtuse angle A is preferably 110°. This angle range can avoid the bolt 5 being difficult to pull out due to too small an obtuse angle A, while too large an obtuse angle A will cause the bolt 5 to be too easy to pull out.

[0037] In this embodiment, the rear end of the bolt 5 is riveted to the lever arm 2. In more embodiments, the rear end of the bolt 5 can be welded to the lever arm 2, or the rear end of the bolt 5 is threadedly connected to the lever arm 2.

[0038] It further includes a door closer body 6, and the other end of the force arm 2 is rotatably hinged to the door closer body 6; the door closer body 6 drives the force arm 2 to act, playing a buffering role when closing the door.

[0039] The above is the preferred solution of the present invention, showing and describing the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Connecting structure of door closer and slide rail, comprising a slide rail (1) and a lever (2), wherein a slider (3) is arranged in the slide rail (1), and one end of the lever (2) is rotatably hinged to the slider (3), characterized in that: A pin hole (301) is formed in the slider (3). A snap ring groove (302) is formed in the inner circumferential wall of the pin hole (301), and a snap ring (4) is arranged in the snap ring groove (302); One end of the force arm (2) is fixedly connected with a pin (5). A clamping groove (501) is formed in the outer circumferential wall of the pin (5). The pin (5) inserted into the pin hole (301) is clamped into the clamping groove (501) through the snap ring (4), so as to realize the assembled connection between the pin (5) and the slider (3).

2. The connection structure between the door closer and the slide rail according to claim 1, characterized in that: A circumferentially arranged guiding inclined surface (502) is formed at the front end of the pin (5).

3. The connection structure between the door closer and the slide rail according to claim 1, characterized in that: A stop end surface (503) is arranged on one side of the clamping groove (501) close to the front end of the pin (5), and the stop end surface (503) is in abutting cooperation with the snap ring (4).

4. The connecting structure between the door closer and the slide rail according to claim 3, characterized in that: The stop end surface (503) also constitutes a guiding surface for disassembling the pin (5), and the guiding surface is inclined outward.

5. The connecting structure of the door closer and the slide rail according to claim 1, characterized in that: The snap ring groove (302) is formed on one side close to the orifice of the pin hole (301).

6. The connecting structure of the door closer and the slide rail according to any one of claims 1-5, characterized in that: The slider (3) includes a slide base (31) formed of a plastic material and a coupling head (32) made of a metal material. The slide base (31) is integrally formed with the coupling head (32) by injection molding, and the pin hole (301) is formed in the coupling head (32).

7. The connection structure between the door closer and the slide rail according to claim 6, wherein: At least one circle of inner grooves (321) is arranged on the outer circumferential wall of the coupling head (32), and the inner grooves (321) are injection molded in the slide base (31); Two anti-rotation end surfaces (322) are arranged on the opposite sides of the outer circumferential wall of the coupling head (32), and the anti-rotation end surfaces (322) are injection molded in the slide base (31).

8. The connection structure between the door closer and the slide rail according to claim 4, characterized in that: An obtuse angle A is formed between the guiding surface and the bottom of the clamping groove (501), and 90° < A ≤ 130°.

9. The connection structure between the door closer and the slide rail according to claim 1, characterized in that: The rear end of the pin (5) is welded to the force arm (2), or the rear end of the pin (5) is threadedly connected to the force arm (2), or the rear end of the pin (5) is riveted to the force arm (2).

10. The connection structure between the door closer and the slide rail according to claim 1, characterized in that: A door closer body (6) is further included, and the other end of the force arm (2) is rotatably hinged to the door closer body (6).

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