Pulley brake device of lifting sliding door

Abstract

The utility model relates to the technical field of pulley braking, in particular to a lifting sliding door pulley braking device which comprises a connecting plate, the connecting plate is of a U-shaped structure, two rolling pulleys are rotationally connected to the middle of the connecting plate, a fixing piece is arranged at the upper end of the connecting plate, the fixing piece is fixedly connected to the bottom of a sliding door, and the fixing piece is of an L-shaped structure. The lower end of the fixing piece is fixedly connected with a guide plate and two mounting tables, mounting holes are formed in the lower ends of the mounting tables, connecting columns are inserted into the mounting holes, the lower ends of the connecting columns are fixedly connected with a bearing base, and a friction rubber block is arranged in the middle of the lower end of the bearing base. According to the utility model, the original bearing base material is changed from a plastic part to a carbon steel material, the fixing screw adopts a countersunk head design, and the screw is sunk into the carbon steel cylinder to be fastened with the section bar, so that the moment of force is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley brakes, in particular to a lifting sliding door pulley brake device. Background Technique

[0002] A sliding door generally refers to a door that can be pushed or pulled along a guide rail and is a commonly used door in families. With the development of technology and the diversification of decoration means, sliding doors have evolved from traditional board surfaces to boards such as glass, fabric, and rattan weaving. Existing sliding doors are equipped with pulleys at the bottom of the door to reduce the friction during the pushing process. However, the existing sliding door pulley structure is relatively simple, and the pulley also bears the role of supporting the load. This leads to deformation of the pulley axle after long-term use, resulting in poor pulley rolling and making it difficult to move the sliding door; the existing pulley brake parts are plastic parts, which are fixed to the bottom profile of the door leaf through fixing screws. After the fixing screws are tightened, it is easy to cause cracks in the hidden cylindrical tube of the plastic parts, affecting the overall service life of the accessories. Moreover, the fastening screws are relatively long and have a large torque, so the fixed position of the brake device is prone to looseness, and the brake parts are severely worn after long-term use, which is not conducive to subsequent use. Content of the Utility Model

[0003] The purpose of the utility model is to provide a lifting sliding door pulley brake device to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A lifting sliding door pulley brake device includes a connecting plate, the connecting plate is of a U-shaped structure, two rolling pulleys are rotatably connected in the middle of the connecting plate, a fixing member is provided at the upper end of the connecting plate, the fixing member is fixedly connected to the bottom of the sliding door, the fixing member is of an L-shaped structure, a guide plate is fixedly connected to the lower end of the fixing member, two mounting platforms are fixedly connected to the lower end of the fixing member in a pairwise manner, mounting holes are provided at the lower ends of the mounting platforms, a connecting column is inserted into the mounting holes, a load-bearing base is fixedly connected to the lower end of the connecting column, a friction rubber block is provided in the middle of the lower end of the load-bearing base, and a connecting member is provided at the lower end of the mounting platform, and the connecting member is located in the mounting hole.

[0005] Preferably, the guide plate and the two mounting platforms are both located in the middle of the two rolling pulleys, and both ends of the mounting platform penetrate through the connecting plate.

[0006] Preferably, a guide groove is formed between the guide plate and the fixing member, the guide groove is inclined, a fixing column is fixedly connected in the middle of the connecting plate, and both ends of the fixing column penetrate through the guide groove.

[0007] Preferably, a connecting protrusion is provided at the corner of the fixing member, a rotating plate is rotatably connected at the connecting protrusion, and the top end of the rotating plate is rotatably connected to the top end of the connecting plate.

[0008] Preferably, the load-bearing base is a carbon steel base, and an extrusion plate is slidably connected to the middle of the load-bearing base. The extrusion plate is fixedly connected to the upper end of the friction rubber block.

[0009] Preferably, the left corner of the load-bearing base is an inclined surface, and an extrusion bolt is threadedly connected to the load-bearing base at the inclined surface. The bottom end of the extrusion bolt abuts against the upper end of the extrusion plate.

[0010] Preferably, the connecting member is provided with a screw, the screw is threadedly connected to the mounting table, the connection method of the screw is a countersunk head method, and the connecting column and the connecting member are connected by interference fit.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The original material of the load-bearing base is changed from a plastic part to a carbon steel material, ensuring that the load-bearing base will not be damaged when the screw is tightened, thereby ensuring the service life of the device; The connecting screw is designed in a countersunk head manner, and the screw is sunk into the cylinder of the braking device, reducing the specification of the screw used and making the overall device more stable in fastening; In the static state, the connecting plate can be lifted, so that the load-bearing base abuts against the ground, and the weight of the sliding door is supported by the load-bearing base, greatly increasing the service life of the device, and a friction rubber block is provided to increase the friction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a pulley brake connection structure.

[0013] Figure 2 It is a load-bearing base connection structure.

[0014] In the figure: 1 connecting plate, 2 rolling pulley, 3 fixing member, 4 connecting protrusion, 5 rotating plate, 6 guiding plate, 7 fixing column, 8 guiding groove, 9 mounting table, 10 load-bearing base, 11 connecting column, 12 connecting member, 13 screw, 14 friction rubber block, 15 extrusion plate, 16 extrusion bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to deepen the understanding and recognition of the present utility model below, the technical solutions in the embodiments of the present utility model will be clearly and completely described and introduced in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments, and no any form of limitation is imposed on this embodiment. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present utility model.

[0016] Please refer to Figure 1-2, the present utility model provides a technical solution: a lifting sliding door pulley braking device, including a connecting plate 1. The connecting plate 1 is of a U-shaped structure. Two rolling pulleys 2 are rotatably connected in the middle of the connecting plate 1. A fixing member 3 is provided at the upper end of the connecting plate 1. The fixing member 3 is fixedly connected to the bottom of the sliding door. The fixing member 3 is of an L-shaped structure. A guide plate 6 is fixedly connected to the lower end of the fixing member 3. Two mounting platforms 9 are fixedly connected to the lower end of the fixing member 3 in a pairwise manner. Mounting holes are provided at the lower ends of the mounting platforms 9. A connecting column 11 is inserted into the mounting holes. A bearing base 10 is fixedly connected to the lower end of the connecting column 11. A friction rubber block 14 is provided in the middle of the lower end of the bearing base 10. A connecting member 12 is provided at the lower end of the mounting platform 9. The connecting member 12 is located in the mounting hole.

[0017] The guide plate 6 and the two mounting platforms 9 are both located in the middle of the two rolling pulleys 2. The two ends of the mounting platform 9 penetrate through the connecting plate 1. A guide groove 8 is formed between the guide plate 6 and the fixing member 3. The guide groove 8 is inclined. A fixing column 7 is fixedly connected in the middle of the connecting plate 1. The two ends of the fixing column 7 penetrate through the guide groove 8. A connecting protrusion 4 is provided at the corner of the fixing member 3. A rotating plate 5 is rotatably connected at the connecting protrusion 4. The top end of the rotating plate 5 is rotatably connected to the top end of the connecting plate 1. The connecting plate 1 can move along the guide groove 8, thereby changing the positional relationship between the rolling pulley 2 and the bearing base 10. After the sliding door stops, the rolling pulley 2 is moved above the bearing base 10, and the bearing base 10 is used for bearing, avoiding damage to the connecting shaft of the rolling pulley 2 and ensuring the service life.

[0018] The bearing base 10 is a carbon steel base. An extrusion plate 15 is slidably connected in the middle of the bearing base 10. The extrusion plate 15 is fixedly connected to the upper end of the friction rubber block 14. The left corner of the bearing base 10 is an inclined surface. An extrusion bolt 16 is threadedly connected to the bearing base 10 at the inclined surface, which can make the most of the space and control the moving distance of the extrusion plate 15. The bottom end of the extrusion bolt 16 abuts against the upper end of the extrusion plate 15. The friction rubber block 14 can increase the friction force, ensuring that the sliding door does not move when stationary and avoiding pinching people. When the friction rubber block 14 is severely damaged, the extrusion bolt 16 can be rotated. The extrusion bolt 16 squeezes the extrusion plate to push the friction rubber block 14 to move downward to compensate for the worn place.

[0019] A screw 13 is provided in the connecting member 12. The screw 13 is threadedly connected to the mounting platform. The connection method of the screw 13 is a countersunk head method. The connecting column 11 and the connecting member 12 are connected by interference fit. Changing from the original long screw to the current countersunk head method reduces the use specification of the screw and makes the overall device more firmly fastened.

[0020] Although embodiments of the present utility model have been shown and described, it should be emphasized that the above description is only an introduction and description of the usage mode of the embodiments of the present utility model, and does not impose any formal limitation on the present utility model. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A push-pull door pulley brake device for improvement, comprising a connecting plate (1), characterized in that: The connecting plate (1) is of a U-shaped structure. Two rolling pulleys (2) are rotatably connected in the middle of the connecting plate (1). A fixing member (3) is provided at the upper end of the connecting plate (1). The fixing member (3) is fixedly connected to the bottom of the sliding door. The fixing member (3) is of an L-shaped structure. A guide plate (6) is fixedly connected to the lower end of the fixing member (3). Two mounting platforms (9) are fixedly connected to the lower end of the fixing member (3) in an opposite manner. Mounting holes are provided at the lower ends of the mounting platforms (9), and connecting columns (11) are inserted into the mounting holes. A load-bearing base (10) is fixedly connected to the lower end of the connecting column (11). A friction rubber block (14) is provided in the middle at the lower end of the load-bearing base (10). A connecting member (12) is provided at the lower end of the mounting platform (9), and the connecting member (12) is located within the mounting hole.

2. The lifting and sliding door pulley braking device according to claim 1, wherein: The guide plate (6) and the two mounting platforms (9) are both located in the middle of the two rolling pulleys (2), and both ends of the mounting platform (9) penetrate through the connecting plate (1).

3. The lifting and sliding door pulley braking device according to claim 1, characterized in that: A guide groove (8) is formed between the guide plate (6) and the fixing member (3). The guide groove (8) is inclined. A fixing column (7) is fixedly connected in the middle of the connecting plate (1), and both ends of the fixing column (7) penetrate through the guide groove (8).

4. A lifting sliding door pulley braking device according to claim 1, characterized in that: Connecting protrusions (4) are provided at the corners of the fixing member (3). A rotating plate (5) is rotatably connected to the connecting protrusions (4), and the top end of the rotating plate (5) is rotatably connected to the top end of the connecting plate (1).

5. The lifting and sliding door pulley braking device according to claim 1, wherein: The load-bearing base (10) is a carbon steel base. A pressing plate (15) is slidably connected in the middle of the load-bearing base (10), and the pressing plate (15) is fixedly connected to the upper end of the friction rubber block (14).

6. The lifting and sliding door pulley braking device according to claim 1, characterized in that: The left corner of the load-bearing base (10) is an inclined surface. An extrusion bolt (16) is threadedly connected to the load-bearing base (10) at the inclined surface, and the bottom end of the extrusion bolt (16) abuts against the upper end of the pressing plate (15).

7. The lifting and sliding door pulley braking device according to claim 1, characterized in that: A screw (13) is provided within the connecting member (12). The screw (13) is threadedly connected to the mounting platform. The connection method of the screw (13) is a countersunk head method, and the connecting column (11) is connected to the connecting member (12) by interference fit.

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