Stroke limiting structure of escape rod

Abstract

The utility model relates to the technical field of escape push rods, in particular to a stroke limiting structure of an escape rod, which comprises a lock body and a push rod rotatably arranged on the lock body, the lock body is provided with a limiting block, the push rod is provided with a limiting groove, and the limiting block is inserted into the limiting groove and can abut against the inner side wall of the limiting groove. The method has the effect of improving the durability of internal parts.

Description

Technical Field

[0001] The utility model relates to the technical field of escape push rods, in particular to a travel limiting structure of an escape rod. Background Art

[0002] Escape locks are mainly used on emergency safety doors in public places with large traffic such as large supermarkets, shopping malls, office buildings, hospitals, and schools. They can prevent outsiders from entering the interior without permission, and can also enable internal personnel to escape safely in emergency situations such as fire. In order to facilitate opening, existing escape locks mostly use an escape push rod structure, that is, the lock is opened and closed by the rotation of the push rod.

[0003] In the prior art, the lock is mostly unlocked by rotating the push rod, and the internal transmission parts are mostly driven by mutual resistance and rotation to achieve transmission. When people are escaping, they often use violent movements in a panic, and the force when pushing the push rod is relatively large. It is easy to continue to press the push rod to push and pull the door open after unlocking. When the push rod is continuously pressed, the push rod drives the internal parts to continue to bear pressure. There is a high possibility that the push rod will continue to exert pressure on the lock parts after unlocking, causing damage to the internal parts. The durability of the internal parts needs to be improved. Utility Model Content

[0004] In order to improve the durability of internal parts, the present application provides a travel limiting structure of an escape rod.

[0005] The travel limit structure of an escape rod provided in the present application adopts the following technical solution:

[0006] A travel limit structure of an escape rod comprises a lock body and a push rod rotatably arranged on the lock body, the lock body is provided with a limit block, the push rod is provided with a limit groove, the limit block is inserted into the limit groove and can be abutted against the inner side wall of the limit groove.

[0007] By adopting the above technical solution, when the push rod is rotated to unlock, the push rod is rotated to unlock, and the overall unlocking and locking operation is simple and convenient, so it is easy to use. When unlocking, the push rod is rotated to make the limit block move relative to the limit groove. When the lock is rotated to unlock, continuing to rotate the push rod will make the limit block press against the inner wall of the limit groove, so that the pressure applied when unlocking is borne by the limit block and the inner wall of the limit groove, thereby reducing the possibility of internal parts of the lock body being damaged by excessive pressure due to continuous pressure applied by continuing to push the push rod after unlocking, thereby improving the durability of internal parts.

[0008] Preferably, the lock body is provided with a mounting groove, the push rod is provided with a mounting block, the mounting block is inserted into the mounting groove and can rotate in the mounting groove, the limit block is provided on the inner wall of the mounting groove, and the limit groove is provided on the mounting block.

[0009] By adopting the above technical solution, the mounting block on the push rod is inserted into the mounting groove and rotates within the mounting groove, thereby enhancing the stability of the connection between the push rod and the lock body, and the limiting block is mounted on the inner wall of the mounting groove to shield the limiting block, reducing the possibility of the limiting block being damaged by impact.

[0010] Preferably, the lock body is rotatably provided with a connection block connected to the mounting block, the mounting block is provided with a connection groove, and the connection block passes through the mounting groove and is inserted into the connection groove.

[0011] By adopting the above technical solution, by inserting the connection block into the connection groove, the stability of the connection between the push rod and the connection block is enhanced, the possibility of the connection between the push rod and the connection block being broken due to excessive axial force when rotating the push rod is reduced, and the durability is improved.

[0012] Preferably, the mounting block is provided with a first connection hole communicating with the connection groove, the push rod is provided with a connection bolt, the connection block is provided with a second connection hole, the connection bolt can pass through the first connection hole and be threadedly connected to the first connection hole, and the connection bolt is inserted into the second connection hole and is threadedly connected to the second connection hole.

[0013] By adopting the above technical solution, the push rod mounting block and the connection block are connected by the connection bolt. In this way, when the push rod or the mounting block is damaged, the connection bolt can be loosened to disassemble the push rod and the mounting block for replacement, and the operation is simple and convenient.

[0014] Preferably, the inner wall of the mounting groove is provided with a mounting hole, the limiting block is provided with a mounting screw, and the mounting screw is inserted into the mounting hole and is threadedly connected to the mounting hole.

[0015] By adopting the above technical solution, after the mounting block is disassembled, the limiting block is mounted on the inner wall of the mounting groove through the mounting screw. When the limiting block is worn or damaged after long-term use, the mounting screw can be loosened and withdrawn from the mounting hole to disassemble the limiting block for replacement, improving the convenience of replacing the limiting block.

[0016] Preferably, an auxiliary groove is provided on one side of the limiting block away from the mounting screw.

[0017] By adopting the above technical solution, the auxiliary groove is mostly square. Through the auxiliary groove, the limiting block can be rotated better to drive the mounting screw to rotate, thereby realizing the installation and disassembly of the limiting block and improving the convenience.

[0018] Preferably, a reinforcing block is provided on the bottom wall of the mounting groove, a reinforcing groove is provided on the limiting block, and the reinforcing block is inserted into the reinforcing groove.

[0019] By adopting the above technical solution, when installing the limit block, the reinforcing block on the bottom wall of the installation groove is inserted into the reinforcing groove on the limit block, so as to limit the limit block. When the driving rod is used to drive the installation block to rotate, so that the limit block abuts against the inner wall of the limit groove, the reinforcing groove abuts against the reinforcing block, and the reinforcing block is used to share the pressure borne by the limit block. While increasing the strength of the limit block, the possibility of damage to the limit block is reduced, and the durability of the limit block is improved.

[0020] Preferably, the inner walls on both sides of the limit groove are arc-shaped, the outer wall of the limit block is arc-shaped, and the side wall of the limit block can be attached to and abutted against the inner wall of the limit groove.

[0021] By adopting the above technical solution, the outer wall of the limit block is abutted tightly by the arc-shaped inner wall of the limit groove, increasing the contact area, thereby reducing the pressure borne by the side wall of the limit block when the limit block abuts against the inner wall of the limit groove, and thus reducing the possibility of wear and damage to the side wall of the limit block, and improving the durability of the limit block.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By providing a lock body, a driving rod, a limit groove and a limit block, rotating the driving rod can drive the lock tongue of the lock body to rotate through the internal transmission components of the lock body, so as to achieve unlocking. When unlocking, the limit block slides relatively in the limit groove. After the lock tongue rotates to unlock, the limit block slides relatively and abuts against the inner wall of the limit groove, thus avoiding the possibility of excessive pressure on the internal parts of the lock body caused by vigorously rotating the driving rod and continuously pressing after unlocking, and improving the durability of the internal parts of the lock body;

[0024] 2. By providing an installation groove, an installation hole, an installation screw and an auxiliary groove, the installation screw on the limit block can be adaptively inserted into the installation hole on the bottom wall of the installation groove and threadedly connected with the installation hole, and the convenience of rotation of the limit block and the installation screw is increased by providing the auxiliary groove, so that when the limit block is damaged, the limit block can be disassembled and replaced conveniently;

[0025] 3. By providing an installation block, a connection block, a connection groove, a connection bolt, a first connection hole and a second connection hole, the connection block is inserted into the connection groove of the driving rod installation block, and the connection bolt passes through the first connection hole and the second connection hole and is tightened, so as to connect the driving rod and the connection block together. When the driving rod or the installation block is damaged, it can be disassembled through the connection bolt, and the operation is simple and convenient, facilitating the replacement of the driving rod and the connection block. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of a stroke limiting structure of an escape rod provided by an embodiment of the present application.

[0027] Figure 2It is a sectional view showing the internal structure of the lock body.

[0028] Figure 3 It is a sectional view showing the connection relationship between the limit block and the inner wall of the installation groove.

[0029] Description of the reference numerals: 1. Push rod; 11. Auxiliary rod; 12. Installation block; 121. Limit groove; 122. Connection groove; 123. First connection hole; 13. Connection bolt; 2. Lock body; 21. Reinforcing block; 22. Installation groove; 221. Installation hole; 23. Connection block; 231. Rotating torsion spring; 24. Second connection hole; 3. Limit block; 31. Installation screw; 32. Auxiliary groove; 33. Reinforcing groove. Specific implementation mode

[0030] The following is a further detailed description of this application in combination with the attached Figures 1-3 drawings.

[0031] An embodiment of this application discloses a stroke limiting structure for an escape rod. Referring to Figures 1 to 3 , it includes a lock body 2 and a push rod 1 rotatably connected to the lock body 2. An auxiliary rod 11 is fixedly arranged on the side of the push rod 1 away from the lock body 2, and the auxiliary rod 11 and the lock body 2 are arranged at both ends of the push rod 1. A circular installation groove 22 is arranged on the surface of the lock body 2. One end of the push rod 1 is integrally and fixedly provided with a cylindrical installation block 12, and the installation block 12 is inserted into the installation groove 22 and can rotate in the installation groove 22. A cylindrical limit block 3 is arranged on the bottom wall of the installation groove 22. The installation block 12 is provided with an arc-shaped limit groove 121, and the inner walls on both sides of the limit groove 121 are both arc-shaped. The limit block 3 is located in the limit groove 121 and can be adapted to fit and abut against the inner walls at both ends of the limit groove 121. During the process of rotating the push rod 1 to unlock, the limit block 3 and the limit groove 121 move relative to each other. When the push rod 1 rotates to unlock and then continues to press down the push rod 1, the limit block 3 presses against the inner wall of the limit groove 121, thereby bearing the continuous pressure brought by pressing the push rod 1, reducing the possibility of damage to the internal parts of the lock body 2 caused by continuous pressing of the push rod 1 after unlocking, and improving the durability of the internal parts of the lock body 2.

[0032] For the convenience of disassembling and replacing the push rod 1, referring to Figure 2, the lock body 2 is rotatably provided with a connecting block 23. A rotating torsion spring 231 is sleeved on the connecting block 23. The rotating torsion spring 231 is used for the rotational reset of the connecting block. The two ends of the rotating torsion spring 231 respectively abut against the protruding clamping blocks of the lock body 2 and the protruding clamping blocks of the connecting block 23. The mounting block 12 is provided with a connecting groove 122. The connecting block 23 passes through the mounting groove 22 and is adaptively inserted into the connecting groove 122. The top wall of the mounting block 12 on the side away from the lock body 2 is provided with a first connecting hole 123 communicating with the connecting groove 122. The top wall of the connecting block 23 on the side away from the lock body 2 is provided with a second connecting hole 24. The push rod 1 is provided with a connecting bolt 13. The connecting bolt 13 is adaptively passed through the first connecting hole 123 and is threadedly connected with the first connecting hole 123. The connecting bolt 13 is adaptively inserted into the second connecting hole 24 and is threadedly connected with the second connecting hole 24. The mounting block 12 and the lock body 2 can be disassembled and separated through the connecting bolt 13, which is convenient for replacement when the mounting block 12 and the push rod 1 are damaged, and improves the convenience of replacement.

[0033] In order to improve the convenience of replacing the limit block 3, referring to Figure 2 and Figure 3 , the bottom wall of the limit block 3 is integrally and fixedly provided with a mounting screw 31. The bottom wall of the mounting groove 22 is provided with a mounting hole 221 communicating with the inside of the lock body 2. The mounting screw 31 is adaptively passed through the mounting hole 221 and inserted into the lock body 2. The mounting screw 31 is threadedly connected with the mounting hole 221. The top wall of the limit block 3 at the end away from the mounting screw 31 is provided with a square auxiliary groove 32. The bottom wall of the mounting groove 22 is integrally provided with a circular reinforcing block 21 around the mounting hole 221. The bottom wall of the limit block on the side where the mounting screw 31 is provided is provided with a circular reinforcing groove 33 around the mounting screw 31. The reinforcing block 21 is adaptively inserted into the reinforcing groove 33 to share the pressure received by the limit block 3. When the limit block 3 needs to be replaced, after disassembling the mounting block 12 and the push rod 1 through the connecting bolt 13, the limit block 3 is rotated through the auxiliary groove 32 to drive the mounting screw 31 to rotate, so that the mounting screw 31 is withdrawn from the mounting hole 221, and then the limit block 3 is disassembled for replacement, and the operation is simple and convenient.

[0034] The implementation principle of the stroke limiting structure of an escape rod in an embodiment of the present application is as follows: When unlocking, pushing the push rod 1 or the auxiliary rod 11 drives the connecting block 23 to rotate to achieve unlocking. During this process, the mounting block 12 rotates, causing the limiting block 3 to move relative to the inner wall of the limiting groove 121. Until unlocking, the limiting block 3 abuts against the inner wall of the limiting groove 121, thereby sharing the pressure borne by the internal parts of the lock body 2. Compared with the existing escape push rod in which the internal parts of the lock body 2 continuously bear the pressure of the user continuously pressing the push rod 1 after unlocking, in this application, the limiting block 3 abuts against the inner wall of the limiting groove 121 to bear the pressure of the user continuously pressing the push rod 1. After unlocking, the internal parts no longer bear the pressure of the user continuously pressing the push rod 1, reducing the possibility of damage caused by the continuous excessive pressure on the internal parts of the lock body 2 due to continuously pressing the push rod 1 after unlocking, thereby improving the durability of the internal parts of the lock body 2.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A travel limit structure of an escape rod, comprising a lock body (2) and a push rod (1) rotatably arranged on the lock body (2), characterized in that: The lock body (2) is provided with a limiting block (3), the push rod (1) is provided with a limiting groove (121), and the limiting block (3) is inserted into the limiting groove (121) and can abut against the inner side wall of the limiting groove (121).

2. The travel limiting structure of the escape rod according to claim 1, characterized in that: The lock body (2) is provided with a mounting groove (22), the push rod (1) is provided with a mounting block (12), the mounting block (12) is inserted into the mounting groove (22) and can rotate in the mounting groove (22), the limit block (3) is provided on the inner wall of the mounting groove (22), and the limit groove (121) is provided on the mounting block (12).

3. The travel limiting structure of the escape rod according to claim 2, characterized in that: The lock body (2) is rotatably provided with a connecting block (23) connected to the mounting block (12); the mounting block (12) is provided with a connecting groove (122); the connecting block (23) passes through the mounting groove (22) and is inserted into the connecting groove (122).

4. The travel limiting structure of the escape rod according to claim 3 is characterized in that: The mounting block (12) is provided with a first connecting hole (123) communicating with the connecting groove (122), the pushing rod (1) is provided with a connecting bolt (13), and the connecting block (23) is provided with a second connecting hole (24), the connecting bolt (13) can pass through the first connecting hole (123) and be threadedly connected to the first connecting hole (123), and the connecting bolt (13) is inserted into the second connecting hole (24) and is threadedly connected to the second connecting hole (24).

5. The travel limiting structure of the escape rod according to claim 4, characterized in that: The inner wall of the mounting groove (22) is provided with a mounting hole (221), and the limiting block (3) is provided with a mounting screw (31), and the mounting screw (31) is inserted into the mounting hole (221) and is threadedly connected to the mounting hole (221).

6. The travel limit structure of the escape rod according to claim 5, characterized in that: An auxiliary groove (32) is provided on the side of the limiting block (3) away from the mounting screw rod (31).

7. The travel limit structure of the escape rod according to claim 2, characterized in that: The bottom wall of the installation groove (22) is provided with a reinforcement block (21), the limiting block (3) is provided with a reinforcement groove (33), and the reinforcement block (21) is inserted into the reinforcement groove (33).

8. The travel limiting structure of an escape rod according to claim 1, characterized in that: The inner walls on both sides of the limiting groove (121) are arranged in an arc shape, and the outer wall of the limiting block (3) is arranged in an arc shape. The side wall of the limiting block (3) can fit against the inner wall of the limiting groove (121).

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