Fast adjusting type sliding rail structure of door closer

Abstract

The utility model relates to a quick adjustment type slide rail structure of a door closer, which comprises a slide rail, a slide block and a support arm, the slide rail is provided with a groove, the upper side of the groove is provided with a chute wider than the groove, one end of the groove is connected with an arched spring piece, the slide block is slidably connected in the chute, one end of the support arm is rotatably hinged on the slide block, and the other end of the support arm is hinged on the slide rail. The sliding block is provided with a rolling piece which is in abutting connection with the spring piece for positioning, the sliding block is of a square structure, a hinge through hole and a bolt through hole are formed in the sliding block in the sliding direction of the sliding block, one end of the supporting arm is rotationally hinged to the interior of the hinge through hole, and a mounting cavity with an open bottom face is formed in the lower side of the bolt through hole. According to the sliding rail structure, the door stopping force adjusting screw can be exposed out of the sliding block, a user can conveniently and rapidly adjust the depth of the rolling piece in the mounting cavity, and therefore the door stopping force of the sliding rail structure is changed.

Description

Technical Field

[0001] This utility model relates to the field of door closers, specifically to a quick-adjustable slide rail structure for door closers. Background Technology

[0002] Current door closer slide rail structures mainly include a slide rail, a sliding block, and a support arm. An arched spring plate is connected to the slide rail. The sliding block is slidably connected within the slide rail and has a cylindrical structure to reduce friction between it and the slide rail. Therefore, the space on the sliding block is only large enough to allow for one axial bolt hole. A mounting cavity is located below the bolt hole, containing a rolling element that engages with the spring plate to stop the door. An adjusting screw is screwed into the bolt hole, adjusting the depth of the rolling element to regulate the stopping force. One end of the support arm is screwed into the upper part of the bolt hole by a fixing screw, achieving a hinged connection between the support arm and the sliding block. However, this slide rail structure requires the fixing screw to be screwed out when adjusting, exposing the internal hexagonal hole of the adjusting screw. Adjustment necessitates disassembling the entire door or support arm, making adjustment difficult and inconvenient. Therefore, further improvements to the slide rail structure of door closers are needed. Utility Model Content

[0003] The purpose of this invention is to solve the aforementioned problems and provide a simple and reasonable quick-adjustment slide rail structure for door closers, which enables the rolling elements to be adjusted quickly.

[0004] The quick-adjustable slide rail structure of the door closer includes a slide rail, a sliding block, and a support arm. The slide rail has a groove, and the upper side of the groove has a groove wider than the groove. One end of the groove is connected to an arched spring plate. The sliding block is slidably connected in the groove, and one end of the support arm is rotatably hinged to the sliding block. The sliding block has a rolling element that abuts and is positioned against the spring plate. The sliding block has a square structure, and hinge through holes and bolt through holes are arranged along its sliding direction. One end of the support arm is rotatably hinged in the hinge through hole. The lower side of the bolt through hole has an open mounting cavity. The rolling element is movably disposed in the mounting cavity, and a door stopping force adjustment screw that abuts against the rolling element is connected in the bolt through hole.

[0005] This utility model can also be solved by the following technical measures:

[0006] As a more specific embodiment, the rolling element is a ball bearing, and the bottom surface of the mounting cavity is provided with an opening with a diameter smaller than that of the ball bearing, and at least part of the ball bearing protrudes out of the opening.

[0007] As a further embodiment, the rolling element is a roller, and the mounting cavity is provided with a limiting protrusion structure near the bottom opening, or the roller is interference-fitted into the mounting cavity, with at least a portion of the roller protruding outside the opening.

[0008] As a further embodiment, the top surface of the sliding block is provided with tightening and loosening markings indicating the direction of adjustment of the door stopping force adjusting screw.

[0009] As a further embodiment, the hinged through hole is located at the end of the sliding block away from the spring plate, and the bolt through hole is located at the end of the sliding block closer to the spring plate.

[0010] As a further embodiment, the slide rail has a groove on the upper side of the slide channel, and the top surface of the sliding block has two circular protrusions extending into the groove, the two circular protrusions defining at least a portion of the hinge through hole or bolt through hole.

[0011] As a further embodiment, a connecting hole is provided at one end of the support arm, and a hexagonal sliding block nut is fixedly connected to the lower part of the hinge through hole. After the fixing screw passes through the connecting hole and the hinge through hole in sequence and is screwed to the hexagonal sliding block nut, the support arm is rotated and hinged on the sliding block.

[0012] As a further embodiment, a fixed block is connected inside the slide rail and slides, which slides in the groove and the slot, and the end of the spring sheet away from the sliding block is clamped between the fixed block and the slide rail.

[0013] As a further embodiment, the fixing block is provided with two locking threaded through holes arranged along its sliding direction. Locking screws are connected in the two locking threaded through holes, one of which abuts against the bottom surface of the groove, and the other locking screw abuts against the spring sheet.

[0014] As a further solution, both ends of the slide rail are connected to plastic end caps.

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

[0016] This utility model relates to a quick-adjustable sliding rail structure for door closers. This sliding rail structure separates the hinge structure of the support arm and the door stop adjustment structure on the sliding block, so that the door stop force adjustment screw is always exposed in the sliding block. This allows users to quickly adjust the depth of the rolling element in the installation cavity, thereby changing the door stop force of the sliding rail structure. It does not require disassembling the entire door or support arm. The structure is simple and the operation is convenient and quick. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the slide rail and sliding block in this utility model.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the sliding block in this utility model.

[0020] Figure 4 This is a schematic diagram of the sliding block structure in this utility model.

[0021] Figure 5 This is an exploded view of the slide rail structure in this utility model.

[0022] Figure 6 and Figure 7 This is a schematic diagram of the structure of Embodiment 2 of this utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1:

[0024] refer to Figures 1 to 5 As shown, the quick-adjustable sliding rail structure of the door closer includes a sliding rail 1, a sliding block 2, and a support arm 3. The sliding rail 1 has a groove 101, and the upper side of the groove 101 has a groove 102 wider than the groove 101. One end of the groove 101 is connected to an arched spring plate 4. The sliding block 2 is slidably connected in the groove 102, and one end of the support arm 3 is rotatably hinged to the sliding block 2. The sliding block 2 has a rolling element that abuts and positions against the spring plate 4. The sliding block 2 has a square structure, and the sliding block 2 has a hinge through hole 5 and a bolt through hole 6 arranged along its sliding direction. One end of the support arm 3 is rotatably hinged in the hinge through hole 5. The lower side of the bolt through hole 6 has an open mounting cavity 7. The rolling element is movably disposed in the mounting cavity 7, and the bolt through hole 6 is connected to a door stopping force adjusting screw 8 that abuts against the rolling element.

[0025] This sliding rail structure allows the hinge structure of the support arm 3 and the door stop adjustment structure to be arranged separately on the sliding block 2, so that the door stop force adjustment screw 8 is always exposed in the sliding block 2. This allows users to quickly adjust the depth of the rolling element in the mounting cavity 7, thereby changing the door stop force of the sliding rail structure without having to disassemble the entire door or support arm 3.

[0026] Specifically, the rolling element is a ball bearing 9, and the bottom surface of the mounting cavity 7 is provided with an opening 701 with a diameter smaller than that of the ball bearing 9. At least part of the ball bearing 9 protrudes outside the opening 701. An inward arc-shaped flange can be formed at the opening 701. The arc-shaped flange can be close to the outer surface of the ball bearing 9 and can also support the ball bearing 9, so that only a small part of the ball bearing 9 protrudes outside the opening 701 and abuts against the spring sheet 4.

[0027] The top surface of the sliding block 2 is provided with a tightening mark 11 and a loosening mark 12 indicating the adjustment direction of the door stop force adjusting screw 8. In this embodiment, the tightening mark 11 mainly includes a positive arrow and a positive symbol (such as "+"), while the loosening mark 12 mainly includes a reverse arrow and a reverse symbol (such as "-"), so that workers can more clearly and accurately adjust the direction and avoid making mistakes when turning the door stop force adjusting screw 8 for the first time.

[0028] The hinge through hole 5 is located at the end of the sliding block 2 away from the spring plate 4, and the bolt through hole 6 is located at the end of the sliding block 2 close to the spring plate 4. This structure ensures that the support arm 3 will not block the bolt through hole 6 when adjusting the door stop force adjusting screw 8.

[0029] The slide rail 1 has a groove 103 on the upper side of the slide groove 102, and the top surface of the sliding block 2 has two circular protrusions 21 extending into the groove 103. The two circular protrusions 21 at least define a part of the hinge through hole 5 or bolt through hole 6. It can support the support arm 3, so that the support arm 3 can move on the upper side of the slide rail 1, and can reduce the volume and weight of the sliding block, reduce production materials, and reduce costs.

[0030] One end of the support arm 3 is provided with a connecting hole 301. A hexagonal slider nut 13 is fixedly connected to the lower part of the hinge through hole 5. After the fixing screw 14 passes through the connecting hole 301 and the hinge through hole 5 in sequence and is screwed to the hexagonal slider nut 13, the support arm 3 is rotated and hinged to the sliding block 2. The hinge structure of the support arm 3 is simple and easy and quick to install.

[0031] The slide rail 1 is connected to a fixing block 15 that slides in the groove 101 and the slide groove 102. The end of the spring sheet 4 away from the sliding block 2 is clamped between the fixing block 15 and the slide rail 1. By fixing the spring sheet 4 with the fixing block 15, the position of the spring sheet 4 can be adjusted at will, and it is ensured that the spring sheet 4 does not affect the sliding of the sliding block 2.

[0032] The fixing block 15 has two locking threaded through holes 151 arranged along its sliding direction. Locking screws 16 are connected in the two locking threaded through holes 151. One locking screw 16 abuts against the bottom surface of the groove 101, and the other locking screw 16 abuts against the spring plate 4. By adjusting the tightness of the two locking threaded through holes 151, the fixing block 15 can slide in the slide rail 1, and the position of the spring plate 4 can be adjusted at will, which improves its practicality and makes it suitable for different types of doors.

[0033] Both ends of the slide rail 1 are connected to plastic end caps 17, which can prevent the sliding block 2 and the fixed block 15 from detaching from the slide groove 102. Example 2:

[0034] Example 2 differs from Example 1 in that: (Refer to...) Figure 6 and Figure 7 As shown, the rolling element is a roller 10. The mounting cavity 7 is provided with a limiting protrusion structure near the bottom opening 701, or the roller 10 is interference-fitted into the mounting cavity 7. At least part of the roller 10 protrudes outside the opening 701. The length direction of the roller 10 is perpendicular to the sliding direction of the sliding block 2. The roller 10 can increase the area of ​​contact with the spring plate 4, resulting in a better door stopping effect. The limiting protrusion structure also supports the roller 10, so that only a small part of the roller 10 protrudes outside the opening 701 and contacts the spring plate 4.

[0035] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A quick-adjustable slide rail structure for a door closer, comprising a slide rail (1), a sliding block (2), and a support arm (3), wherein the slide rail (1) is provided with a groove (101), and the upper side of the groove (101) is provided with a groove (102) wider than the groove (101), and one end of the groove (101) is connected to an arched spring plate (4), the sliding block (2) is slidably connected in the groove (102), and one end of the support arm (3) is rotatably hinged to the sliding block (2), and the sliding block (2) is provided with a rolling element that abuts against and positions the spring plate (4), characterized in that: The sliding block (2) has a square structure, and the sliding block (2) has hinged through holes (5) and bolt through holes (6) arranged along its sliding direction. One end of the support arm (3) is rotatably hinged in the hinged through hole (5). The lower side of the bolt through hole (6) has an open mounting cavity (7). The rolling element is movably disposed in the mounting cavity (7), and the bolt through hole (6) is connected to a door stopping force adjusting screw (8) that abuts against the rolling element.

2. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: The rolling element is a ball (9), and the bottom surface of the mounting cavity (7) is provided with an opening (701) with a diameter smaller than that of the ball (9), and at least part of the ball (9) protrudes out of the opening (701).

3. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: The rolling element is a roller (10), and the mounting cavity (7) is provided with a limiting protrusion structure near the bottom opening (701), or the roller (10) is interference-fitted into the mounting cavity (7), and at least part of the roller (10) protrudes out of the opening (701).

4. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: The top surface of the sliding block (2) is provided with a tightening mark (11) and a loosening mark (12) indicating the force adjustment direction of the door stopping force adjusting screw (8).

5. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: The hinge through hole (5) is opened at the end of the sliding block (2) away from the spring plate (4), and the bolt through hole (6) is opened at the end of the sliding block (2) close to the spring plate (4).

6. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: The slide rail (1) has a groove (103) on the upper side of the slide groove (102), and the top surface of the sliding block (2) has two circular protrusions (21) extending into the groove (103). The two circular protrusions (21) at least define a part of the hinge through hole (5) or bolt through hole (6).

7. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: One end of the support arm (3) is provided with a connecting hole (301). The lower part of the hinge through hole (5) is fixedly connected with a hexagonal sliding block nut (13). After the fixing screw (14) passes through the connecting hole (301) and the hinge through hole (5) in sequence and is screwed to the hexagonal sliding block nut (13), the support arm (3) is rotated and hinged on the sliding block (2).

8. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: The slide rail (1) is connected to a fixed block (15) that slides in the groove (101) and the slide groove (102). The end of the spring sheet (4) away from the sliding block (2) is clamped between the fixed block (15) and the slide rail (1).

9. The quick-adjustable slide rail structure of the door closer according to claim 8, characterized in that: The fixing block (15) has two locking threaded through holes (151) arranged along its sliding direction. The two locking threaded through holes (151) are connected with locking screws (16), one of which abuts against the bottom surface of the groove (101), and the other locking screw (16) abuts against the spring sheet (4).

10. The quick-adjustable slide rail structure of the door closer according to claim 1, characterized in that: Both ends of the slide rail (1) are connected to plastic end caps (17).

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