Push lever lock structure capable of being locked after being opened

Abstract

The push lever lock structure capable of being locked after being opened comprises a groove frame horizontally installed on the surface of a door plate and a trigger cover plate arranged above the groove frame in a matched mode, a spring bolt is arranged at one end of the groove frame, a sealing cover is arranged at the other end of the groove frame, and the spring bolt is arranged on the sealing cover. The transmission mechanism is arranged in the groove frame; the locking mechanism is arranged in the sealing cover; when the trigger cover plate is pressed down, the trigger cover plate drives the spring bolt to retract through the transmission mechanism, and the locking mechanism locks the spring bolt at a retraction locking position immediately. According to the push lever lock structure capable of being locked after being opened, due to the fact that the locking mechanism is arranged, when the trigger cover plate is pressed downwards to be triggered, the spring bolt can be locked at the retraction locking position, an escape door is kept in an open state after being opened, and rapid rescue and escape are facilitated.

Description

Technical Field

[0001] The utility model relates to a push-bar lock structure, in particular to a push-bar lock structure that can be locked after being opened. Background Art

[0002] Push-bar locks are usually installed on fire escape doors. Its structure includes a groove frame horizontally installed on the door panel surface and a trigger cover plate cooperatively arranged above the groove frame. A lock tongue is arranged at one end of the groove frame. When the trigger cover plate is pushed, it will trigger and drive the retraction action of the lock tongue, so that the lock tongue disengages from the clamping groove and the escape door is opened.

[0003] The push-bar lock can be automatically reset, so that when the escape door is closed again, the lock tongue of the push-bar lock can be inserted into the clamping groove again. Since the scene is extremely chaotic during a fire, therefore, the escape door that is closed again may cause people's panic. It is necessary to maintain its open state during a fire for rescue and escape. Summary of the Utility Model

[0004] Aiming at the drawbacks of the prior art, the utility model provides a push-bar lock structure that can be locked after being opened.

[0005] The push-bar lock structure that can be locked after being opened according to the utility model includes a groove frame horizontally installed on the door panel surface and a trigger cover plate cooperatively arranged above the groove frame. A lock tongue is arranged at one end of the groove frame, and a cover is arranged at the other end of the groove frame. It also includes a transmission mechanism arranged in the groove frame and a locking mechanism arranged in the cover;

[0006] When the trigger cover plate is pressed, the trigger cover plate drives the lock tongue to retract through the transmission mechanism, and the locking mechanism immediately locks the lock tongue at the retracted locking position.

[0007] In the push-bar lock structure that can be locked after being opened according to the utility model, the transmission mechanism includes a transmission plate arranged at the bottom of the groove of the groove frame and capable of horizontally sliding on the bottom of the groove;

[0008] One end of the transmission plate is fixedly provided with the lock tongue, and a transmission rack is arranged at the other end of the transmission plate;

[0009] It also includes a pivot drive wheel. The pivot drive wheel has teeth meshing with the transmission rack, and a drive link is arranged tangentially along the circumference of the pivot drive wheel. The free end of the drive link is pivotally connected to the trigger cover plate;

[0010] When the trigger cover plate is pressed, the pivot drive wheel is driven to rotate through the drive link, and then the transmission plate is driven to horizontally slide by the meshing of the teeth and the transmission rack, so as to drive the lock tongue to retract.

[0011] In the push-bar lock structure that can be locked after being opened according to the present utility model, the locking structure includes a bolt and an elastic pushing mechanism;

[0012] The elastic pushing mechanism pushes the bolt so that the front end of the bolt abuts against the front end of the transmission plate;

[0013] Moreover, when the transmission plate slides horizontally, the elastic pushing mechanism pushes the front end of the bolt into the socket at the front end of the transmission plate.

[0014] In the push-bar lock structure that can be locked after being opened according to the present utility model, the elastic pushing mechanism includes a spiral lifting base arranged on the surface of the cover housing, a handle part is arranged at the end of the bolt, the handle part has a spiral base that cooperates with the spiral lifting base, and a return spring for keeping the bolt in a pushed-out state is arranged between the spiral lifting base and the spiral base.

[0015] In the push-bar lock structure that can be locked after being opened according to the present utility model, by arranging a locking mechanism, when the trigger cover plate is pressed and triggered, the lock tongue can be locked at the retracted locking position, so that the escape door can maintain its opened state after being opened, which is beneficial to rapid rescue and escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the push-bar lock structure that can be locked after being opened according to the present utility model;

[0017] Figure 2 is another schematic diagram of the push-bar lock structure that can be locked after being opened according to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the present utility model in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0019] As Figure 1 、 Figure 2 shown, the push-bar lock structure that can be locked after being opened according to the present utility model includes a slot frame 12 horizontally installed on the surface of the door panel and a trigger cover plate 10 arranged in cooperation above the slot frame 12. A lock tongue (not shown in the figure) is arranged at one end of the slot frame 12, a cover 30 is arranged at the other end of the slot frame 12, and a transmission mechanism 2 arranged in the slot frame 12 and a locking mechanism 3 arranged in the cover 30 are also included. When the trigger cover plate 10 is pressed (i.e., switched from the state shown in Figure 1 to Figure 2In the shown state, the trigger cover plate 10 drives the locking tongue to retract through the transmission mechanism 2, so that the locking tongue can be disengaged from the clamping groove, thereby opening the escape door. The locking mechanism 3 then locks the locking tongue in the retracted locking position to prevent the locking tongue from protruding again and inserting into the clamping groove. The escape door remains in its open state after being opened, which is conducive to rapid rescue and escape.

[0020] In the push-bar lock structure that can be locked after opening according to the present invention, the transmission mechanism 2 specifically includes a transmission plate 111 disposed at the bottom 122 of the groove frame 12 and capable of horizontally sliding on the bottom 122 of the groove frame 12. One end of the transmission plate 111 is fixedly provided with the locking tongue (not shown in the figure). The other end of the transmission plate 111 is provided with a transmission rack 110. The transmission mechanism 2 further includes a pivot drive wheel 20 having teeth 21 meshing with the transmission rack 110. A drive link 22 is tangentially led out along the circumference of the pivot drive wheel 20. The free end of the drive link 22 is pivotally connected to the pivot long hole 101 of the trigger cover plate 10 through a pivot 221. A vertical guiding long hole 102 is provided on the side wall of the trigger cover plate 10. A protruding guiding rod 121 is provided on the vertical wall of the groove frame 12, and the guiding rod 121 is correspondingly inserted into the vertical guiding long hole 102, so that the trigger cover plate 10 can perform a vertical relative movement with respect to the groove frame 12 when being pressed down. When the trigger cover plate 10 is pressed down (such as Figure 2 the shown state), the pivot drive wheel 20 is driven to rotate through the drive link 22, and the teeth 21 rotate synchronously. Then, the transmission plate 111 is driven to horizontally slide by the meshing of the teeth 21 and the transmission rack 110 to drive the locking tongue to retract.

[0021] In the push-bar lock structure that can be locked after opening according to the present invention, the locking structure 3 specifically includes a bolt 31 and an elastic pushing mechanism. The elastic pushing mechanism pushes the bolt 31 to make the front end 310 of the bolt 31 abut against the front end 113 of the transmission plate 111 (such as Figure 1 shown). Moreover, when the trigger cover plate 10 is pressed down to drive the transmission plate 111 to horizontally slide, the elastic pushing mechanism pushes the front end 310 of the bolt 31 into the socket 112 at the front end of the transmission plate 111 (such as Figure 2 shown), so that the transmission plate 111 is locked by the bolt 31, that is, the trigger cover plate 10 cannot be pushed up and rebounded by the return spring (not shown in the figure) between it and the groove frame 12.

[0022] In the structure of the push-bar lock that can be locked after being opened according to the present utility model, the elastic pushing mechanism specifically includes a spiral lifting base 32 arranged on the surface of the housing of the cover 30. A handle part 33 is arranged at the end of the bolt 31. The handle part 33 has a spiral base 34 that cooperates with the spiral lifting base 32. A return spring 35 for keeping the bolt 31 in the ejected state is arranged between the spiral lifting base 32 and the spiral base 34. That is, the inside of the spiral lifting base 32 is hollow, and the top surface of its outer wall spirally ascends along the circumferential direction. At the same time, the spiral base 34 is also a structure with a hollow inside, and the bottom surface of its outer wall spirally descends along the circumferential direction. The spiral top surface of the spiral lifting base 32 corresponds to and fits with the spiral bottom surface of the spiral base 34. When the handle part 33 is rotated by an external force, the spiral bottom surface of the spiral base 34 is lifted due to the guidance of the spiral top surface of the spiral lifting base 32, so that the handle part 33 and the bolt 31 are lifted synchronously, and the front end 310 of the bolt 31 can be disengaged from the socket 112 at the front end of the transmission plate 111, and the trigger cover plate 10 can be pushed up and rebounded by the return spring between it and the slot frame 12. The return spring 35 arranged in the internal hollow area between the spiral lifting base 32 and the spiral base 34 makes the handle part 33 have a tendency to rotate. That is, under the action of this return spring 35, the spiral bottom surface of the spiral base 34 descends along the spiral top surface of the spiral lifting base 32, and the front end 310 of the bolt 31 moves towards the direction of the transmission plate 111 (that is, when the trigger cover plate 10 is not pressed, it abuts against the front end 113 of the transmission plate 111, or after the trigger cover plate 10 is pressed, it is inserted into the socket 112 at the front end of the transmission plate 111).

[0023] In the present utility model, a pushing spring 36 is also sleeved on the front end of the bolt 31. The pushing spring 36 is located between the inner wall of the cover 30 and the limiting plate 37 at the front end of the bolt 31, and can keep the bolt 31 in a state of abutting against the front end 113 of the transmission plate 111 by pushing the limiting plate 37.

[0024] In the structure of the push-bar lock that can be locked after being opened according to the present utility model, by setting a locking mechanism, when the trigger cover plate is pressed and triggered, the locking tongue can be locked in the retracted locking position, so that the escape door can maintain its open state after being opened, which is beneficial to rapid rescue and escape.

[0025] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples described herein.

Claims

1. A push bar lock structure that can be locked after opening, comprising a slot frame horizontally mounted on the surface of a door panel and a trigger cover plate arranged above the slot frame, a locking tongue is arranged at one end of the slot frame, and a sealing cover is arranged at the other end of the slot frame, characterized in that: It also includes a transmission mechanism disposed in the slot frame and a locking mechanism disposed in the sealing cover; When the trigger cover is pressed, the trigger cover drives the lock tongue to retract through the transmission mechanism, and the locking mechanism then locks the lock tongue in the retracted locking position.

2. The push bar lock structure that can be locked after opening according to claim 1, characterized in that: The transmission mechanism comprises a transmission plate which is arranged at the bottom of the groove of the groove frame and can slide horizontally on the bottom of the groove; The locking tongue is fixedly arranged at one end of the transmission plate, and a transmission rack is arranged at the other end of the transmission plate; It also includes a pivoting driving wheel, the pivoting driving wheel has teeth meshing with the transmission rack, and a driving connecting rod is tangentially extended from the circumference of the pivoting driving wheel, and the free end of the driving connecting rod is pivotally connected to the trigger cover plate; When the trigger cover is pressed, the driving link drives the pivoting driving wheel to rotate, and then the engagement of the teeth and the transmission rack drives the transmission plate to slide horizontally, so as to drive the lock tongue to retract.

3. The push bar lock structure that can be locked after opening as claimed in claim 2, characterized in that: The locking mechanism includes a latch and an elastic pushing mechanism; The elastic pushing mechanism pushes the latch pin so that the front end of the latch pin abuts against the front end of the transmission plate; Furthermore, when the transmission plate slides horizontally, the elastic pushing mechanism pushes the front end of the latch pin to extend into the socket at the front end of the transmission plate.

4. The push bar lock structure that can be locked after opening as claimed in claim 3, characterized in that: The elastic pushing mechanism includes a spiral lifting base arranged on the surface of the sealing shell, a handle portion is arranged at the end of the pin, the handle portion has a spiral base that cooperates with the spiral lifting base, and a return spring is arranged between the spiral lifting base and the spiral base to keep the pin in the ejected state.

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