Normally closed emergency push-pull lock
By designing the combination of lock shell, lock tongue, lock tongue plate, lock bar and opening key, the existing emergency push-pull lock structure is complicated and installation is complicated, and the effect of rapid opening and simplified installation in emergency situations is achieved, ensuring that The reliability and convenience of the lock.
Patent Information
- Application Number
- CN202420576876.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The existing normally closed emergency push-pull lock has a complex structure, large size and cumbersome installation, making it difficult to quickly open in emergencies.
An emergency push and plugging lock including a lock shell, lock tongue, lock tongue plate, lock bar, open key and reset mechanism is designed. By pressing the opening key, the lock block of the lock tongue is turned away from the lock groove, and the lock tongue is turned around and Push the lock unlocking function of the door and keep the lock tongue in the open state through the reset mechanism to ensure that the lock unlock can be unlocked by pressing the opening key once.
It realizes the function of simple structure and quick opening in an emergency state, simplifies the installation process, and ensures that the lock tongue does not fall back due to gravity in a normally open state through the lock bar normally open mechanism and the reset mechanism improves the reliability and use of the lock Convenience.
Smart Images
Figure CN222140938U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of locks and relates to a normally closed emergency push-pull lock. Technical Background
[0002] At some entrances of shopping malls, doors that are usually closed and only need to be opened in an emergency need to be installed with normally closed emergency push-pull locks. The normally closed emergency push-pull locks in the existing market have complex structures, large volumes, and cumbersome installation. Summary of the invention
[0003] In view of the above problems, the present invention provides a normally closed emergency push-pull lock, which has the advantages of simple structure and can be unlocked by pressing an opening key in an emergency state.
[0004] The object of the present invention is achieved in that:
[0005] A normally closed emergency push-pull lock, comprising a lock shell and a lock tongue, wherein the lock tongue can be extended or retracted relative to the lock tongue hole of the lock shell, wherein a lock tongue plate is arranged in the lock shell, wherein the front end of the lock tongue plate is hingedly connected to the lock tongue, wherein a reset mechanism for causing the lock tongue to extend out of the lock shell is also arranged in the lock shell, wherein a lock bar is arranged in the lock shell, wherein one end of the lock bar away from the lock tongue is rotatably connected to the lock shell, wherein a locking portion of the lock bar extends toward the lock tongue, wherein the locking portion is arranged above the lock tongue, and a locking groove is formed at one end close to the lock tongue, wherein a locking block is formed on the lock tongue, wherein the locking block is arranged in the locking groove and inhibits the lock tongue from turning over;
[0006] An opening key is also provided in the lock shell, and the opening key partially extends out of the lock shell. The opening key is provided with an opening slope surface, and the lock bar extends an opening end toward the opening slope surface, and the opening end is arranged on the moving path of the opening slope surface. When the opening key is pressed, the slope surface of the opening key presses against the opening end to move the locking part of the lock bar upward, so that the locking block of the lock tongue leaves the locking groove of the lock bar.
[0007] With the above design, when it is necessary to open the door, the opening key is pressed, and the inclined surface of the opening key presses against the opening end to move the lock bar upwards, so that the locking block of the lock tongue leaves the locking groove of the lock bar. At this time, as long as the door is pushed open, the lock tongue will flip over and be squeezed into the lock shell to achieve unlocking; after the door is opened, the lock tongue extends out of the lock shell again under the action of the resetting mechanism, but because the lock tongue has flipped over, the locking block of the lock tongue no longer corresponds to the locking groove but presses against the lower end surface of the lock bar to prevent the lock bar from falling back due to gravity; when the door is closed again, the locking block of the lock tongue returns to its original position, corresponding to the locking groove of the lock bar. At this time, due to the action of gravity, the locking part will fall back, so that the locking groove clamps the locking block of the lock tongue, so that the door can be opened only after the opening key is pressed again.
[0008] The utility model is further configured as follows: a slot is formed on the lock bar, a lock bar normally open mechanism is arranged in the slot, the lock bar normally open mechanism comprises a fixed seat fixed on the lock shell, a rotating plate is rotatably connected to the fixed seat, the rotating axis of the rotating plate is parallel to the rotating axis of the lock tongue, the rotating plate is a fan-shaped structure and is provided with two pushing surfaces, which are respectively arranged on the path of the locking block when the lock tongue is opened or closed;
[0009] A top block is formed on the upper end surface of the rotating plate, and a clearance groove corresponding to the top block is also provided on the fixing seat, and the groove depth of the clearance groove is higher than the height of the top block.
[0010] By setting the lock bar normally open mechanism, after pressing the opening key, the slope surface of the opening key presses against the opening end to move the lock bar upwards, so that the locking block of the lock tongue leaves the locking groove of the lock plate. At this time, as long as the door is pushed open, the lock tongue will flip and be squeezed into the lock shell to achieve unlocking. After the door is opened, the lock tongue extends out of the lock shell again under the action of the reset mechanism. However, since the lock tongue has flipped, the locking block of the lock tongue is no longer in the corresponding locking groove but presses against the lower end surface of the lock bar, preventing the lock bar from falling back due to gravity.
[0011] When the door is closed again, the lock tongue flips over and retracts into the lock shell again. At this time, the locking block pushes the pushing surface of the rotating plate to rotate the rotating plate, so that the top block on the rotating plate leaves the giving groove and abuts against the lower end surface of the lock bar. Then the lock tongue extends out of the lock shell again under the action of the resetting mechanism. At this time, although the locking block of the lock tongue corresponds to the locking groove, the top block on the rotating plate abuts against the lower end surface of the lock bar, the lock bar cannot fall back, thereby achieving the normally open state by pressing the opening button once.
[0012] The utility model is further configured as follows: the lock bar is "L" shaped, and the opening end is arranged at the corner.
[0013] The utility model is further configured as follows: there are two opening keys, which are respectively arranged on the front and back sides of the lock shell and partially extend out of the lock shell, an opening key reset spring is arranged between the two opening keys, and spring grooves are arranged at the opposite ends of the two opening keys for fixing the opening key reset spring.
[0014] The opening key has two settings, so emergency unlocking can be achieved both inside and outside the door.
[0015] The utility model is further configured as follows: the opening key includes a frustum portion and a cylinder, the frustum portion gradually becomes larger close to the lock shell, the end surface of the frustum portion close to the lock shell is a limiting surface, and the cylinder extends outside the lock shell.
[0016] The utility model is further configured as follows: an opening key guide groove is also provided in the lock housing.
[0017] By setting the guide groove, the movement of the opening key is made more stable.
[0018] The utility model is further configured as follows: spring positioning columns are respectively arranged at the opposite ends of the lock tongue plate and the lock tongue, a lock tongue flip spring is arranged between the lock tongue plate and the lock tongue, and the two ends of the lock tongue flip spring are respectively sleeved on the two spring positioning columns.
[0019] The setting of the lock tongue flip spring can help the lock tongue flip into place.
[0020] The utility model is further configured as follows: a limiting block is formed on the lock tongue plate, and a lock tongue limiting groove matching the limiting block is formed on the lock shell.
[0021] The utility model is further configured as follows: the reset mechanism comprises a lock tongue reset spring, the lock tongue plate extends outwardly to have a reset end, the reset spring abuts between the reset end and the lock housing, and the reset spring always gives the lock tongue a force to extend outward.
[0022] The utility model is further configured as follows: the lock tongue is in a diamond shape. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a structural schematic diagram of the utility model.
[0025] Figure 2 This is the internal structure diagram of the utility model.
[0026] Figure 3 It is a structural schematic diagram of the lock tongue.
[0027] Figure 4 It is a schematic diagram of the structure of the lock bar and the lock bar normally open mechanism.
[0028] Figure 5 It is a structural diagram of the lock bar normally open mechanism.
[0029] Figure 6 This is a schematic diagram of the structure of the open key.
[0030] 1-lock housing; 11-lock bolt hole; 12-opening key guide groove; 13-lock bolt limit groove; 14-lock bolt return spring;
[0031] 2-lock tongue; 21-locking block; 22-spring positioning column; 23-lock tongue flip spring;
[0032] 3-locking tongue plate; 31-limiting block; 32-reset end;
[0033] 4-locking strip; 41-locking portion; 42-locking groove; 43-opening end; 44-slot;
[0034] 5-fixed seat; 51-rotating plate; 52-pushing surface; 53-top block; 54-giving groove;
[0035] 6-opening key; 61-slope surface; 62-opening key return spring; 63-spring groove; 64-cone portion; 65-cylinder; 66-limiting surface. DETAILED DESCRIPTION
[0036] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.
[0037] A normally closed emergency push-pull lock, comprising a lock shell 1 and a lock tongue 2, the lock tongue 2 is in a rhombus shape, the lock tongue 2 can extend or retract relative to the lock tongue hole 11 of the lock shell 1, a lock tongue plate 3 is arranged in the lock shell 1, the front end of the lock tongue plate 3 is hinged to the lock tongue 2, a reset mechanism for causing the lock tongue 2 to extend out of the lock shell 1 is also arranged in the lock shell 1, a lock bar 4 is arranged in the lock shell 1, the lock bar 4 is in an "L" shape, one end of the lock bar 4 away from the lock tongue 2 is rotatably connected to the lock shell 1, a locking portion 41 is extended from the lock bar 4 toward the lock tongue 2, the locking portion 41 is arranged above the lock tongue 2, and a locking groove 42 is formed at one end close to the lock tongue 2, a locking block 21 is formed on the lock tongue 2, the locking block 21 is arranged in the locking groove 42 and inhibits the lock tongue 2 from turning over;
[0038] An opening key 6 is also provided in the lock shell 1, and a portion of the opening key 6 extends out of the lock shell 1. The opening key 6 is provided with an opening slope surface 61. The lock bar 4 extends an opening end 43 toward the opening slope surface 61. The opening end 43 is provided at a corner of the lock bar 4. The opening end 43 is provided on the moving path of the opening slope surface 61. When the opening key 6 is pressed, the slope surface 61 of the opening key 6 presses against the opening end 43 to move the locking portion 41 of the lock bar 4 upward, so that the locking block 21 of the lock tongue 2 leaves the locking groove 42 of the lock bar 4.
[0039] When the door is closed again, the locking block 21 of the lock tongue 2 returns to its original position, corresponding to the locking groove 42 of the lock bar 4. At this time, due to the effect of gravity, the locking portion 41 will fall back, causing the locking groove 42 to jam the locking block 21 of the lock tongue 2, so that the door can be opened only after the opening key 6 is pressed again.
[0040] The lock bar 4 is formed with a slot 44, and a lock bar normally open mechanism is arranged in the slot 44. The lock bar normally open mechanism comprises a fixing seat 5 fixed on the lock housing 1, and a rotating plate 51 is rotatably connected to the fixing seat 5. The rotating axis of the rotating plate 51 is parallel to the rotating axis of the lock tongue 2. The rotating plate 51 is a fan-shaped structure and is provided with two pushing surfaces 52, which are respectively arranged on the path of the locking block 21 when the lock tongue is opened or closed;
[0041] A top block 53 is formed on the upper end surface of the rotating plate 51 , and a clearance groove 54 corresponding to the top block 53 is also formed on the fixing seat 5 , and the depth of the clearance groove 54 is higher than the height of the top block 53 .
[0042] By setting the lock bar normally open mechanism 5, after pressing the opening key 6, the slope surface 61 of the opening key 6 presses against the opening end 43 to move the lock bar 4 upward, so that the locking block 21 of the lock tongue 2 leaves the locking groove 42 of the lock bar 4. At this time, as long as the door is pushed open, the lock tongue 2 will flip and be squeezed into the lock shell 1 to achieve unlocking. After the door is opened, the lock tongue 2 extends out of the lock shell again under the action of the reset mechanism. However, since the lock tongue 2 has flipped, the locking block 21 of the lock tongue is no longer in the corresponding locking groove 42 but presses against the lower end surface of the lock bar 4, preventing the lock bar 4 from falling back due to gravity.
[0043] When the door is closed again, the lock tongue 2 flips over and retracts into the lock shell again. At this time, the locking block pushes the pushing surface 52 of the rotating plate 51 to rotate the rotating plate 51, so that the top block 53 on the rotating plate 51 leaves the giving groove 54 and abuts against the lower end surface of the locking bar 4. Then, the lock tongue 2 extends out of the lock shell 1 again under the action of the resetting mechanism. At this time, although the locking block 21 of the lock tongue corresponds to the locking groove 42, the top block 53 on the rotating plate 51 abuts against the lower end surface of the locking bar 4, so the locking bar 4 cannot fall back, thereby achieving the normally open state that can be maintained by pressing the opening key once.
[0044] There are two opening keys 6, which are respectively arranged on the front and back of the lock shell 1, and partially extend out of the lock shell 1. An opening key reset spring 62 is arranged between the two opening keys 6, and spring grooves 63 are arranged at the opposite ends of the two opening keys 6 for fixing the opening key reset spring 62. By setting two opening keys 6, emergency unlocking can be achieved both inside and outside the door.
[0045] The opening key 6 includes a frustum portion 64 and a cylinder 65 . The frustum portion 64 gradually becomes larger as it approaches the lock housing. The end surface of the frustum portion 64 close to the lock housing is a limiting surface 66 . The cylinder 65 extends outside the lock housing 1 .
[0046] An opening key guide groove 12 is also provided in the lock housing 1, and the opening key can move more stably through the provision of the guide groove.
[0047] The opposite ends of the lock tongue plate 3 and the lock tongue 2 are respectively provided with spring positioning columns 22, and a lock tongue flip spring 23 is provided between the lock tongue plate 3 and the lock tongue 2. The two ends of the lock tongue flip spring 23 are respectively sleeved on the two spring positioning columns 23. Through the setting of the lock tongue flip spring 23, the lock tongue can be assisted to flip into place.
[0048] The locking tongue plate 3 is formed with a limiting block 31 , and the lock housing 1 is formed with a locking tongue limiting groove 13 matching the limiting block 31 .
[0049] The reset mechanism includes a lock tongue reset spring 14. The lock tongue plate 3 extends outwardly to form a reset end 32. The reset spring 14 is pressed between the reset end 32 and the lock housing 1. The reset spring 14 always applies a force to the lock tongue 2 to extend outward.
[0050] The invention has the characteristics of simple structure and can be unlocked by pressing an opening key in an emergency state.
[0051] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A normally closed emergency push-pull lock, comprising a lock housing and a lock tongue, wherein the lock tongue can be extended or retracted relative to the lock tongue hole of the lock housing, wherein a lock tongue plate is provided in the lock housing, wherein the front end of the lock tongue plate is hingedly connected to the lock tongue, and wherein a reset mechanism for causing the lock tongue to extend out of the lock housing is provided in the lock housing, wherein: A lock bar is provided in the lock housing, and one end of the lock bar away from the lock tongue is rotatably connected to the lock housing. A locking portion is extended from the lock bar toward the lock tongue, and the locking portion is arranged above the lock tongue, and a locking groove is formed at one end close to the lock tongue. A locking block is formed on the lock tongue, and the locking block is arranged in the locking groove and inhibits the lock tongue from turning over. An opening key is also provided in the lock shell, and the opening key partially extends out of the lock shell. The opening key is provided with an opening slope surface, and the lock bar extends an opening end toward the opening slope surface, and the opening end is arranged on the moving path of the opening slope surface. When the opening key is pressed, the slope surface of the opening key presses against the opening end to move the locking part of the lock bar upward, so that the locking block of the lock tongue leaves the locking groove of the lock bar.
2. A normally closed emergency push-pull lock according to claim 1, characterized in that: The lock bar is formed with a slot, and a lock bar normally open mechanism is arranged in the slot, and the lock bar normally open mechanism comprises a fixed seat fixed on the lock shell, and a rotating plate is rotatably connected to the fixed seat, and the rotating axis of the rotating plate is parallel to the rotating axis of the lock tongue. The rotating plate is a fan-shaped structure and is provided with two pushing surfaces, which are respectively arranged on the path of the locking block when the lock tongue is opened or closed; A top block is formed on the upper end surface of the rotating plate, and a clearance groove corresponding to the top block is also provided on the fixing seat, and the groove depth of the clearance groove is higher than the height of the top block.
3. A normally closed emergency push-pull lock according to claim 1, characterized in that: The lock bar is "L" shaped, with the open end located at the corner.
4. A normally closed emergency push-pull lock according to claim 1, characterized in that: There are two opening keys, which are respectively arranged on the front and back of the lock shell and partially extend out of the lock shell. An opening key reset spring is arranged between the two opening keys, and spring grooves are arranged at the opposite ends of the two opening keys for fixing the opening key reset spring.
5. A normally closed emergency push-pull lock according to claim 4, characterized in that: The opening key comprises a frustum portion and a cylinder, the frustum portion gradually becomes larger as it approaches the lock housing, the end surface of the frustum portion close to the lock housing is a limiting surface, and the cylinder extends outside the lock housing.
6. A normally closed emergency push-pull lock according to claim 5, characterized in that: An opening key guide groove is also arranged in the lock shell.
7. A normally closed emergency push-pull lock according to claim 1, characterized in that: The opposite ends of the lock tongue plate and the lock tongue are respectively provided with spring positioning columns, a lock tongue flip spring is provided between the lock tongue plate and the lock tongue, and the two ends of the lock tongue flip spring are respectively sleeved on the two spring positioning columns.
8. The normally closed emergency push-pull lock according to claim 1, characterized in that: A limiting block is formed on the lock tongue plate, and a lock tongue limiting groove matching the limiting block is formed on the lock shell.
9. The normally closed emergency push-pull lock according to claim 1, characterized in that: The reset mechanism comprises a lock tongue reset spring, the lock tongue plate extends outwardly to form a reset end, the reset spring abuts between the reset end and the lock housing, and the reset spring always gives the lock tongue a force to extend outward.
10. The normally closed emergency push-pull lock according to claim 1, characterized in that: The lock tongue is diamond-shaped.