Anti-falling mechanism of sliding door

Abstract

The utility model belongs to the technical field of sliding doors, and particularly relates to an anti-falling mechanism of a sliding door. Comprising two sliding rails corresponding to each other in position, a sliding lifting door body is arranged between the two sliding rails, a first limiting groove is formed in the side wall face, opposite to the sliding lifting door body, of each sliding rail, and the first limiting grooves play a role in limiting the sliding lifting door body; the two sliding rails are arranged on the sliding door body and used for guiding the sliding door body to move, and the two anti-falling toothed plates are arranged in the first limiting grooves in the two sliding rails in a sliding mode correspondingly. Through the arrangement of the anti-falling toothed plate, the anti-falling block and the first telescopic spring, the sliding door body which falls suddenly can be braked emergently, so that the phenomenon that the sliding door body falls suddenly due to the fact that the sliding door body is damaged during lifting is avoided; therefore, a serious safety problem is caused to pedestrians or workers passing through the sliding door body.

Description

Technical Field

[0001] This utility model relates to the field of sliding door technology, specifically to an anti-fall mechanism for sliding doors. Background Technology

[0002] Sliding doors, also known as industrial sliding doors, electric sliding doors, and automatic sliding doors, use high-quality sandwich panels as the door body. The lifting and positioning of the door body are controlled by PLC, frequency converter, and encoder. Fixed tracks are installed on both sides of the door body. When the motor pulls the door body up, it will rise to the ceiling according to the tracks, making reasonable use of space.

[0003] Currently, the opening and closing of sliding doors relies entirely on their lifting mechanism. If this mechanism malfunctions, the open sliding door will fall from a height. If pedestrians or workers are passing through the door while it is falling, the falling door could strike them, posing a serious safety hazard. Therefore, we have proposed a fall protection mechanism for sliding doors to address this problem. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an anti-fall mechanism for sliding doors, solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A fall prevention mechanism for a sliding door includes two sliding rails that are positioned opposite each other, and a sliding door body is disposed between the two sliding rails. A first limiting groove is provided on the side wall of the sliding rail opposite to the sliding door body, and the first limiting groove serves to limit the sliding door body.

[0009] Anti-fall toothed plates are fixedly installed on the sliding door body and are used to guide the movement of the sliding door body. There are two anti-fall toothed plates, and the two anti-fall toothed plates are respectively slidably installed in the first limiting grooves on the two slide rails.

[0010] An anti-fall block is rotatably installed in the first limiting groove to prevent the sliding door body from suddenly falling. One end of the anti-fall block is abutted in the tooth groove of the anti-fall tooth plate. A first telescopic spring is fixedly installed at the bottom of the inner side of the first limiting groove, and one end of the first telescopic spring is fixedly connected to the anti-fall block.

[0011] Furthermore, an installation groove is provided at the bottom of the inner side of the first limiting groove, and a first connecting rod is rotatably arranged in the installation groove. A second connecting rod is rotatably arranged at one end of the first connecting rod, one end of the second connecting rod is rotatably connected to the anti-fall block, and a third connecting rod is rotatably arranged at the other end of the first connecting rod.

[0012] Furthermore, a second limiting groove is provided inside the slide rail, the third connecting rod is located inside the second limiting groove, and a sliding groove is provided on the slide rail, the sliding groove communicating with the second limiting groove.

[0013] Furthermore, a fixing rod is provided in the slide groove, one end of the fixing rod is fixedly connected to the third connecting rod in the second limiting groove, and a pull plate is fixedly provided at the other end of the fixing rod.

[0014] Furthermore, an electric telescopic device is fixedly installed on the lower end face of the pull plate, and a fixing block is fixedly installed on the end of the electric telescopic device away from the electric telescopic device, and the fixing block is fixedly connected to the slide rail.

[0015] Furthermore, a U-shaped block is provided below the sliding door body, and a plurality of second telescopic springs are fixedly arranged on the inner side of the U-shaped block, with a buffer plate fixedly arranged at one end of each of the plurality of second telescopic springs.

[0016] Furthermore, a guide groove is provided on the side wall opposite to the sliding door body of the sliding rail, and a guide block is provided on the side wall opposite to the sliding rail of the sliding door body. The guide block on the sliding door body is slidably disposed in the guide groove on the sliding rail.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides an anti-fall mechanism for a sliding door, which has the following beneficial effects:

[0019] This utility model, through the setting of anti-fall tooth plate, anti-fall block and first telescopic spring, can brake the sliding door body that suddenly falls, thereby avoiding the phenomenon of the sliding door body suddenly falling due to damage during the lifting and lowering of the sliding door body, which would cause serious safety problems to pedestrians or workers passing through the sliding door body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a perspective view of the sliding door body of this utility model;

[0022] Figure 3 This is a first partial sectional view of the slide rail of this utility model;

[0023] Figure 4 This is a second partial sectional view of the slide rail of this utility model;

[0024] Figure 5 This is a cross-sectional view of the U-shaped block of this utility model;

[0025] Figure 6 This utility model Figure 3 Enlarged view of point A in the middle.

[0026] In the diagram: 1. Slide rail; 2. Sliding door body; 3. First limiting groove; 4. Anti-fall tooth plate; 5. Anti-fall block; 6. First telescopic spring; 7. Mounting groove; 8. First connecting rod; 9. Second connecting rod; 10. Third connecting rod; 11. Second limiting groove; 12. Slide groove; 13. Fixing rod; 14. Pull plate; 15. Electric telescopic device; 16. Fixing block; 17. U-shaped block; 18. Second telescopic spring; 19. Buffer plate; 20. Guide groove; 21. Guide block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example

[0029] like Figure 1-6 As shown, an embodiment of the present invention provides an anti-fall mechanism for a sliding door, including two sliding rails 1 that are corresponding to each other, and a sliding door body 2 is provided between the two sliding rails 1. A first limiting groove 3 is provided on the side wall of the sliding rail 1 opposite to the sliding door body 2. The first limiting groove 3 serves to limit the sliding door body 2.

[0030] Anti-fall toothed plate 4 is fixedly installed on the sliding door body 2 and is used to guide the movement of the sliding door body 2. There are two anti-fall toothed plates 4, and the two anti-fall toothed plates 4 are respectively slidably installed in the first limiting groove 3 on the two slide rails 1.

[0031] The anti-fall block 5 is rotatably installed in the first limiting groove 3 to prevent the sliding door body 2 from suddenly falling. One end of the anti-fall block 5 is abutted in the tooth groove on the anti-fall tooth plate 4. A first telescopic spring 6 is fixedly installed at the bottom of the inner side of the first limiting groove 3. One end of the first telescopic spring 6 is fixedly connected to the anti-fall block 5.

[0032] The anti-fall tooth plate 4, anti-fall block 5, and first telescopic spring 6 can be used to brake the sliding door body 2 in case it suddenly falls, thereby avoiding the phenomenon that the sliding door body 2 will suddenly fall due to damage caused by the lifting and lowering of the sliding door body 2, which would cause serious safety problems to pedestrians or staff passing through the sliding door body 2.

[0033] An installation groove 7 is provided at the bottom inner side of the first limiting groove 3. A first connecting rod 8 is rotatably disposed in the installation groove 7. A second connecting rod 9 is rotatably disposed at one end of the first connecting rod 8. One end of the second connecting rod 9 is rotatably connected to the anti-fall block 5. A third connecting rod 10 is rotatably disposed at the other end of the first connecting rod 8. A second limiting groove 11 is provided in the slide rail 1. The third connecting rod 10 is located in the second limiting groove 11. A sliding groove 12 is provided on the slide rail 1. The sliding groove 12 communicates with the second limiting groove 11. A fixing rod 13 is provided in the sliding groove 12. One end of the fixing rod 13 is fixedly connected to the third connecting rod 10 in the second limiting groove 11. A pull plate 14 is fixedly disposed at the other end of the fixing rod 13.

[0034] The first connecting rod 8, the second connecting rod 9, the third connecting rod 10, the slide groove 12, the fixing rod 13, and the pull plate 14 can release the restriction on the sliding door body 2 when it is in emergency stop, so that the sliding door body 2 can move down freely after the restriction is released.

[0035] An electric telescopic device 15 is fixedly installed on the lower end face of the pull plate 14, and a fixing block 16 is fixedly installed on the end of the electric telescopic device 15 away from the electric telescopic device 15. The fixing block 16 is fixedly connected to the slide rail 1. The electric telescopic device 15 and the fixing block 16 facilitate the return of the pull plate 14 to its original position.

[0036] A U-shaped block 17 is provided below the sliding door body 2. Multiple second telescopic springs 18 are sequentially fixed to the inner side of the U-shaped block 17, and a buffer plate 19 is fixed to one end of each of the second telescopic springs 18. The arrangement of the U-shaped block 17, the second telescopic springs 18, and the buffer plate 19 can mitigate the impact force of the sliding door body 2 on the ground when it falls, thus protecting the sliding door body 2.

[0037] A guide groove 20 is provided on the side wall of the slide rail 1 opposite to the sliding door body 2, and a guide block 21 is provided on the side wall of the sliding door body 2 opposite to the slide rail 1. The guide block 21 on the sliding door body 2 is slidably disposed within the guide groove 20 on the slide rail 1. The guide groove 20 and the guide block 21 reduce the friction between the sliding door body 2 and the slide rail 1, thereby making the movement of the sliding door body 2 on the slide rail 1 smoother.

[0038] The working principle of this practical application is as follows:

[0039] When the sliding door body 2 needs to be opened, simply move it upwards along the slide rail 1. During this movement, the anti-fall block 5 rests against the anti-fall toothed plate 4 on the sliding door body 2. Once the sliding door body 2 reaches a certain height, its upward movement stops. If the sliding door body 2, while open, suddenly falls, the anti-fall block 5 will engage with the toothed groove of the anti-fall toothed plate 4. Since the position of the anti-fall block 5 is fixed, the sliding door body 2 will stop falling. To close the sliding door body 2 while it is open, slightly move it upwards, and then use the electric telescopic device 15 to pull the pull plate 14. Pulling downwards, the pull plate 14 pulls the third connecting rod 10 downwards through the fixed rod 13. The third connecting rod 10 drives the first connecting rod 8 to rotate. The first connecting rod 8 drives the anti-fall block 5 to rotate through the second connecting rod 9 until the anti-fall block 5 is rotated out of the tooth groove on the anti-fall tooth plate 4. Then, the force that moves the sliding door body 2 upwards is released, and the sliding door body 2 is pulled downwards through the pull plate 14 until the sliding door body 2 is pulled down to the bottom of the stroke. When the sliding door body 2 moves down to the bottom of the stroke, the sliding door body 2 will hit the buffer plate 19. The buffer plate 19 is compressed by the force of the second telescopic spring 18, and the second telescopic spring 18 is compressed by the force to relieve the buffer force of the sliding door body 2 moving downwards.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fall prevention mechanism for a sliding door, comprising two corresponding slide rails (1), with a sliding door body (2) disposed between the two slide rails (1), characterized in that: The slide rail (1) has a first limiting groove (3) on the side wall opposite to the sliding door body (2), and the first limiting groove (3) serves to limit the sliding door body (2). Anti-fall toothed plate (4) is fixedly installed on the sliding door body (2) and is used to guide the movement of the sliding door body (2). There are two anti-fall toothed plates (4), and the two anti-fall toothed plates (4) are respectively slidably installed in the first limiting groove (3) on the two slide rails (1). The anti-fall block (5) is rotatably set in the first limiting groove (3) to prevent the sliding door body (2) from suddenly falling. One end of the anti-fall block (5) is set in the tooth groove on the anti-fall tooth plate (4). A first telescopic spring (6) is fixedly set at the bottom of the inner side of the first limiting groove (3). One end of the first telescopic spring (6) is fixedly connected to the anti-fall block (5).

2. The anti-fall mechanism for a sliding door according to claim 1, characterized in that: An installation groove (7) is provided at the bottom inner side of the first limiting groove (3). A first connecting rod (8) is rotatably arranged in the installation groove (7). A second connecting rod (9) is rotatably arranged at one end of the first connecting rod (8). One end of the second connecting rod (9) is rotatably connected to the anti-fall block (5). A third connecting rod (10) is rotatably arranged at the other end of the first connecting rod (8).

3. The anti-fall mechanism for a sliding door according to claim 2, characterized in that: The slide rail (1) has a second limiting groove (11) inside, the third connecting rod (10) is located in the second limiting groove (11), and the slide rail (1) has a sliding groove (12) inside, the sliding groove (12) is connected to the second limiting groove (11).

4. The anti-fall mechanism for a sliding door according to claim 3, characterized in that: A fixing rod (13) is provided in the slide groove (12). One end of the fixing rod (13) is fixedly connected to the third connecting rod (10) in the second limiting groove (11). A pull plate (14) is fixedly provided at the other end of the fixing rod (13).

5. The anti-fall mechanism for a sliding door according to claim 4, characterized in that: An electric telescopic device (15) is fixedly installed on the lower end face of the pull plate (14). A fixing block (16) is fixedly installed on the end of the electric telescopic device (15) away from the electric telescopic device (15). The fixing block (16) is fixedly connected to the slide rail (1).

6. The anti-fall mechanism for a sliding door according to claim 1, characterized in that: A U-shaped block (17) is provided below the sliding door body (2). Multiple second telescopic springs (18) are fixedly arranged on the inner side of the U-shaped block (17). A buffer plate (19) is fixedly arranged at one end of each of the multiple second telescopic springs (18).

7. The anti-fall mechanism for a sliding door according to claim 1, characterized in that: The slide rail (1) has a guide groove (20) on the side wall opposite to the sliding door body (2), and the sliding door body (2) has a guide block (21) on the side wall opposite to the slide rail (1). The guide block (21) on the sliding door body (2) is slidably disposed in the guide groove (20) on the slide rail (1).

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