Emergency darkroom lock body
Through the combined structure of the locking tongue plate and impact shrapnel, twisting and resisting end, the problem of insufficient concealment and reusability of the emergency dark room lock body is solved, and concealed locking and stable unlocking without door handles or key holes is achieved.
Patent Information
- Application Number
- CN202421576622.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The existing emergency room lock body has shortcomings in terms of concealment and reusability, and it is impossible to effectively lock and open the door without installing a door handle or key hole.
The combination structure of the locking tongue plate and impact shrapnel, twisting and resisting end is adopted to control the door opening force through impact force, and the door locking from the house is locked from the house by using the twisting and resisting end. The cooperation between the locking tongue plate and the fulcrum plate ensures stable lock opening.
It realizes the need for door handles or key holes to improve concealment and reuse the lock door from the house to ensure the stability and efficiency of unlocking.
Smart Images
Figure CN223269782U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of lock bodies and relates to an emergency darkroom lock body. Technical Background
[0002] An emergency room is a hidden room used for hiding in times of danger, ensuring both concealment and emergency response. To enhance concealment, the door is designed without handles or keyholes that might reveal the danger. Its surface blends seamlessly into the surroundings, ensuring its location is only known to the homeowner. Therefore, a specialized emergency room lock is required. This type of room requires high concealment, lockability from inside, and reusability. Summary of the Invention
[0003] In view of the above problems, the present invention provides an emergency darkroom lock body, which has the advantages of simple structure, high concealment, lockable door from inside the house, and reusable.
[0004] The object of the present invention is achieved like this:
[0005] An emergency darkroom lock body comprises a lock housing and a lock tongue. The lock housing is formed with a lock tongue hole for the lock tongue to extend out. The rear end of the lock tongue is connected to a lock tongue plate. The lock tongue swings back and forth with the front and rear walls of the lock tongue hole as a fulcrum. The lock housing is also provided with an impact spring. The rear end of the impact spring abuts against the inner wall of the rear housing, and the front end of the impact spring abuts against the rear end surface of the lock tongue plate. The impact spring always applies a force to press the lock tongue plate forward.
[0006] A twist knob is rotatably provided in the lock housing, and is provided on a side of the bolt plate away from the bolt. A resisting end of the twist knob extends toward the bolt plate, and when the door is locked, the resisting end abuts against the rear end surface of the bolt plate.
[0007] The lock tongue plate is also connected to a lock tongue retraction mechanism, which always gives the lock tongue a force to retract into the lock housing.
[0008] With the above arrangement, when the door is locked, the resisting end on the twist knob presses against the lock tongue plate to prevent the lock tongue plate from being pulled back by the lock tongue retraction mechanism; but when the door is hit from the front, the force of the impact on the lock tongue plate exceeds the pressure applied by the impact shrapnel, and the lock tongue swings back and forth with the front and rear walls of the lock tongue hole as the fulcrum, causing the tail end of the lock tongue plate to tilt backward. When the tail end surface of the lock tongue plate separates from the resisting end, the lock tongue plate loses its restriction and is pulled back into the lock shell by the lock tongue retraction mechanism, thereby achieving unlocking.
[0009] When the attacker enters the door, the knob can be rotated 90 degrees to move the resisting end away from the front end of the bolt plate. At this time, the impact spring acting on the bolt plate will push the bolt plate forward, making it return to a straight state. Then the knob can be reversed 90 degrees. The resisting end will push the bolt plate out of the lock housing and keep against the rear end of the bolt plate, waiting for the next impact to open the door.
[0010] This arrangement eliminates the need for a door handle or keyhole on the front, and the impact spring allows for controlled force to open the door, achieving concealment. Furthermore, the twist and resistance features allow the door to be locked from inside after entry, providing a reusable mechanism.
[0011] The present invention is further configured as follows: the resisting end is abutted against the resisting surface at the rear end of the lock tongue plate and is connected to a fulcrum spring piece, the fulcrum spring piece always maintains a tendency to bend and deform toward the lock tongue plate, and when the resisting end is abutted against the rear end surface of the lock tongue plate, the fulcrum spring piece is clamped between the resisting end and the lock tongue plate; when the lock tongue plate swings to separate the rear end surface from the resisting surface, the fulcrum spring piece bounces into the front end surface of the lock tongue plate.
[0012] Due to the limitation of the door thickness, the thickness of the lock shell is also limited, so the distance that the lock bolt plate can swing is not large. In use, if the swing distance of the lock bolt plate just exceeds the critical value, the lock bolt plate will be pressed back to the straight device again due to the action of the impact shrapnel before it has time to be pulled back by the spring, resulting in failure to open the door. However, it is very urgent to use a dark room, so a failure will waste precious time. Therefore, by setting the fulcrum shrapnel, when the lock bolt plate is subjected to a force exceeding the force applied to the lock bolt plate by the impact shrapnel, the tail end of the lock bolt plate will be tilted, and the fulcrum shrapnel will immediately pop out towards the lock bolt plate and be set on the front end surface of the lock bolt plate to prevent the lock bolt plate from being pressed back to the straight state by the impact shrapnel before it is retracted into the lock shell, thereby ensuring that the door lock is opened and improving the stability of unlocking.
[0013] The present invention is further configured as follows: the fulcrum spring piece includes a fixed portion and a bent deformation portion, the fixed portion is fixedly connected to the resisting end through a fastener, and the bent deformation portion is an arc-shaped spring piece and is pressed against the resisting surface of the resisting end by the tail end surface of the lock tongue plate.
[0014] Through the above arrangement, after unlocking, the lock is rotated 90 degrees so that the resisting end and the bent deformed part leave the front end of the lock tongue plate, and the lock tongue plate is pressed back to a straight state by the impact spring piece, and then rotated 90 degrees in the opposite direction, the resisting end pushes the lock tongue plate out of the lock shell, and presses the arc-shaped spring piece on the resisting surface of the resisting end, thereby realizing the reuse of the fulcrum spring piece without taking up space.
[0015] The present invention is further configured such that at least one side of the resisting end is provided with a rounded corner, and the bent and deformed portion of the fulcrum spring is fitted on the side of the rounded corner.
[0016] The rounded corners can increase the service life of the fulcrum spring and make it easier for the resisting end to push out the lock tongue plate.
[0017] The present invention is further configured as follows: the lock tongue retraction mechanism includes a tension spring, one end of the tension spring is connected to the lock tongue, and the other end is fixed to the twist knob, and the tension spring always gives the lock tongue a force to retract the lock housing.
[0018] By setting the tension spring, when the tail end of the lock bolt plate and the resisting end are separated, the tension spring pulls the lock bolt back to the lock housing.
[0019] The present invention is further configured as follows: a spring fixing column is formed on the lock tongue, one end of the tension spring is sleeved on the spring fixing column, and the other end is sleeved on the torsion.
[0020] The present invention is further configured as follows: the lock tongue retraction mechanism includes two mutually attractive magnetic pieces, one magnetic piece is fixed on the lock tongue, and the other magnetic piece is fixed on the twist knob, and the force of the mutual attraction between the two magnetic pieces always drives the lock tongue to retract into the lock housing.
[0021] The present invention is further configured as follows: the rear end portion of the impact spring piece is configured as an arc, and the front end portion of the impact spring piece is fixedly connected to the lock tongue plate.
[0022] The present invention is further configured as follows: a lock tongue limiting end is formed on the front end of the lock tongue plate, and after the lock tongue is extended, the lock tongue limiting end abuts against the inner end of the lock shell panel.
[0023] By setting the locking tongue limiting end, the extension distance of the locking tongue can be controlled.
[0024] The present invention is further configured as follows: two arc guide portions are formed on the upper and lower sides of the lock bolt plate, and the four arc guide portions enable the lock bolt plate to be gap-fitted with the upper and lower shells of the lock housing.
[0025] The arrangement of the four arc guide portions makes the bolt plate more stable whether it is telescopically moving or swinging forward and backward.
[0026] Compared to the prior art, the present invention has the following outstanding and beneficial technical effects: through the above-mentioned structure, no unlocking structure such as a door handle or keyhole is required on the front, and the provision of an impact spring can control the impact force required to open the door, thereby achieving concealment. Furthermore, through the provision of a twisting end and a resisting end, the door can be locked from inside the room after entering the room, and the door is reusable. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.
[0028] Figure 1 It is a structural diagram of the emergency darkroom lock body.
[0029] Figure 2 This is a schematic diagram of the internal structure of the emergency darkroom lock body.
[0030] Figure 3 This is a top view of the internal structure of the emergency darkroom lock body when the door is locked.
[0031] Figure 4 This is a top view of the internal structure of the emergency darkroom lock body during impact.
[0032] Figure 5 This is a top view of the internal structure of the emergency darkroom lock body when the lock tongue is retracted.
[0033] Figure 6 This is a diagram showing the positional relationship between the resisting end, fulcrum spring, and bolt plate when locking the door.
[0034] Figure 7 This is a diagram showing the positional relationship between the resisting end, the fulcrum spring, and the lock bolt plate when the lock bolt is retracted.
[0035] Figure 8 This is a diagram showing the positional relationship between the resisting end, the fulcrum spring, and the lock bolt plate when the lock bolt plate returns to a straight state.
[0036] Figure 9 It is a schematic diagram of the structure that twists when the fulcrum spring is pressed against the resisting end.
[0037] Figure 10 It is a schematic diagram of the structure of the twisting when the fulcrum spring piece bounces into the front end surface of the lock tongue plate.
[0038] 1-lock shell; 2-lock tongue; 3-lock tongue hole; 4-lock tongue plate; 5-front and rear walls of lock tongue hole; 6-impact spring; 7-inner wall of rear shell; 8-rear end face of lock tongue plate; 9-torsion; 10-resistance end; 11-tail end face of lock tongue plate; 12-spring fixing column; 13-tension spring; 14-resistance face; 15-fulcrum spring; 16-fixing part; 17-bending deformation part; 18-front end face of lock tongue plate; 19-lock tongue limiting end; 20-arc guide part. DETAILED DESCRIPTION
[0039] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.
[0040] Example 1:
[0041] Figure 3 This is the viewing angle from above when the lock body is installed. Figure 3 The upper and lower orientations shown are the front-to-back orientations described in this embodiment.
[0042] An emergency darkroom lock body includes a lock housing 1 and a lock tongue 2. The lock housing 1 is formed with a lock tongue hole 3 for the lock tongue 2 to extend. The tail end of the lock tongue 2 is connected to a lock tongue plate 4. The lock tongue 2 swings back and forth with the front and rear walls 5 of the lock tongue hole as a fulcrum. The lock housing 1 is also provided with a striker shrapnel 6. The rear end of the striker shrapnel 6 abuts against the inner wall 7 of the rear housing, and the front end of the striker shrapnel 6 abuts against the rear end surface 8 of the lock tongue plate. The striker shrapnel 6 always applies a force to press the lock tongue plate 4 forward.
[0043] A twist knob 9 is rotatably provided in the lock housing 1. The twist knob 9 is provided on the side of the bolt plate 4 away from the bolt. A resisting end 10 of the twist knob 9 extends toward the bolt plate 4. When the door is locked, the resisting end 10 abuts against the rear end surface 11 of the bolt plate.
[0044] A spring fixing column 12 is formed on the lock tongue 2, one end of the tension spring 13 is sleeved on the spring fixing column 12, and the other end is sleeved on the twist 9. The tension spring 13 always gives the lock tongue a force to retract the lock housing.
[0045] With this arrangement, there is no need for a door handle or keyhole or other unlocking structure on the front, and the impact spring 6 can control the impact force required to open the door, eliminating the need for a handle or key to open the door, thereby achieving concealment. Furthermore, the arrangement of the twist 9 and the resisting end 10 allows the door to be locked from inside the house after entering the house, and the door is reusable.
[0046] The resisting end 10 is against the resisting surface 14 at the rear end of the lock tongue plate and is connected to a fulcrum spring piece 15. The fulcrum spring piece 15 always maintains a tendency to bend and deform toward the lock tongue plate 4. When the resisting end 10 is against the rear end surface 11 of the lock tongue plate, the fulcrum spring piece 15 is clamped between the resisting end 10 and the lock tongue plate 4; when the lock tongue plate 4 swings to separate the rear end surface 11 from the resisting surface 14, the fulcrum spring piece 15 bounces into the front end surface 18 of the lock tongue plate.
[0047] Due to the limitation of the thickness of the door, the thickness of the lock shell is also limited, so the distance that the lock bolt plate can swing is not large. In use, if the swing distance of the lock bolt plate 4 just exceeds the critical value, at this time, due to the action of the impact spring piece 6, the lock bolt plate is pressed back to the straight device before it has time to be pulled back by the spring 13, thereby failing to open the door. However, it is very urgent to use a dark room, so a failure will waste precious time. Therefore, by setting the fulcrum spring piece 15, when the lock bolt plate is subjected to a force exceeding the force applied to the lock bolt plate 4 by the impact spring piece 6, the tail end of the lock bolt plate is tilted, and the fulcrum spring piece 15 will immediately pop out towards the lock bolt plate 4 and be arranged on the front end surface 18 of the lock bolt plate to prevent the lock bolt plate from being pressed back to the straight state by the impact spring piece 6 before it is retracted into the lock shell, thereby ensuring that the door lock is opened and improving the stability of unlocking.
[0048] The fulcrum spring piece 15 includes a fixed portion 16 and a bent and deformed portion 17. The fixed portion 16 is fixedly connected to the resisting end 10 by a fastener. The bent and deformed portion 17 is an arc-shaped spring piece and is pressed by the rear end surface 11 of the lock bolt plate against the resisting surface 14 of the resisting end. Through the above arrangement, after unlocking, the lock is rotated 90 degrees so that the resisting end 10 and the bent and deformed portion 17 are both separated from the front end surface 18 of the lock bolt plate. The lock bolt plate 4 is pressed back to a straight state by the impact spring piece 6. Then, the lock bolt plate 4 is rotated 90 degrees in the opposite direction. The resisting end 10 pushes the lock bolt plate 4 out of the lock housing 1 and presses the arc-shaped spring piece against the resisting surface 14 of the resisting end. This realizes the reuse of the fulcrum spring piece 15 without taking up space.
[0049] At least one side of the resisting end 10 is rounded, and the bent deformed portion 17 of the fulcrum spring is attached to the rounded side. By setting the rounded corner, the service life of the fulcrum spring can be increased, and it is easier for the resisting end to push the lock bolt plate out.
[0050] The rear end of the impact spring piece 6 is arranged in an arc shape, and the front end of the impact spring piece is fixedly connected to the lock tongue plate.
[0051] The front end of the bolt plate is formed with a bolt stopper end 19. After the bolt is extended, the bolt stopper end 19 abuts against the inner end of the lock housing panel. By setting the bolt stopper end, the distance that the bolt extends can be controlled.
[0052] The upper and lower sides of the bolt plate are formed with two arc guides 20, which make the bolt plate fit in the clearance between the upper and lower shells of the lock housing. By setting the four arc guides, the bolt plate can be more stable in telescopic movement or forward and backward swing.
[0053] Example 2:
[0054] This embodiment is basically the same as the first embodiment, except that the lock tongue retraction mechanism includes two mutually attractive magnetic plates (not shown), one magnetic plate is fixed on the lock tongue, and the other magnetic plate is fixed on the twist knob. The force of the mutual attraction between the two magnetic plates always drives the lock tongue to retract into the lock housing.
[0055] Example 3: This example is basically the same as Example 1, except that the lock tongue retraction mechanism includes a motor (not shown), a rack (not shown) fixed to the lock tongue plate, and a sensing device (not shown). The sensing device senses that the tail end of the lock tongue plate is tilted up and controls the rotation of the motor. The gear and rack on the output end of the motor engage and drive the rack to retract, thereby driving the lock tongue plate to retract.
[0056] The lock tongue retraction mechanism belongs to the upper concept, and the second embodiment and the third embodiment are both subordinate concepts. There are various ways to retract the lock tongue plate into the lock housing, so it is impossible to list them one by one. Any mechanism that can retract the lock tongue plate falls within the scope of protection of this patent.
[0057] Working principle:
[0058] When the door is locked, the resisting end 10 on the knob 9 abuts against the bolt plate 4 to prevent the bolt plate from being pulled back by the tension spring 13 .
[0059] When from the front ( Figure 3 When the lock is locked, the bolt plate 4 is pulled back into the lock housing by the tension spring 13, and the bolt plate 4 is pulled back into the lock housing by the tension spring 13, thereby achieving unlocking.
[0060] When the striker enters the door, the knob 9 can be rotated 90 degrees first to make the resisting end 10 and the fulcrum spring piece 15 leave the front end surface 18 of the lock bolt plate. At this time, the impact spring piece 6 that has been acting on the lock bolt plate presses the lock bolt plate forward, so that the lock bolt plate 4 returns to a straight state. Then the knob 9 is rotated 90 degrees in the opposite direction, the resisting end 10 pushes the lock bolt plate 4 out of the lock shell, and presses the fulcrum spring piece 15 on the resisting surface 14 of the resisting end, waiting for the next impact to open the door.
[0061] The invention has the characteristics of simple structure, high concealment, the door can be locked from inside the house, and is reusable.
Claims
1. An emergency darkroom lock body, comprising a lock shell and a lock tongue, wherein the lock shell is formed with a lock tongue hole for the lock tongue to extend out, characterized in that: The tail end of the lock tongue is connected to the lock tongue plate, and the lock tongue swings back and forth with the front and rear walls of the lock tongue hole as a fulcrum. A striking shrapnel is also provided in the lock shell, the rear end of the striking shrapnel abuts against the inner wall of the rear shell, and the front end of the striking shrapnel abuts against the rear end surface of the lock tongue plate, and the striking shrapnel always applies a force to press the lock tongue plate forward; A twist knob is rotatably provided in the lock housing, and is provided on a side of the bolt plate away from the bolt. A resisting end of the twist knob extends toward the bolt plate, and when the door is locked, the resisting end abuts against the rear end surface of the bolt plate. The lock tongue plate is also connected to a lock tongue retraction mechanism, which always gives the lock tongue a force to retract into the lock housing.
2. The emergency darkroom lock body according to claim 1, characterized in that: The resisting end is connected to the resisting surface at the rear end of the lock tongue plate, and the fulcrum spring piece always maintains a tendency to bend and deform toward the lock tongue plate. When the resisting end is against the rear end surface of the lock tongue plate, the fulcrum spring piece is clamped between the resisting end and the lock tongue plate; when the lock tongue plate swings to separate the rear end surface from the resisting surface, the fulcrum spring piece bounces into the front end surface of the lock tongue plate.
3. The emergency darkroom lock body according to claim 2, characterized in that: The fulcrum spring piece includes a fixed portion and a bent deformation portion, the fixed portion is fixedly connected to the resisting end through a fastener, and the bent deformation portion is an arc-shaped spring piece and is pressed against the resisting surface of the resisting end by the tail end surface of the lock tongue plate.
4. The emergency darkroom lock body according to claim 3, characterized in that: At least one side of the resisting end is provided with a rounded corner, and the bent and deformed portion of the fulcrum spring is fitted on the side of the rounded corner.
5. The emergency darkroom lock body according to claim 1, characterized in that: The lock tongue retraction mechanism includes a tension spring, one end of which is connected to the lock tongue and the other end is fixed to the twist knob. The tension spring always gives the lock tongue a force to retract into the lock housing.
6. The emergency darkroom lock body according to claim 5, characterized in that: A spring fixing column is formed on the lock tongue, one end of the tension spring is sleeved on the spring fixing column, and the other end is sleeved on the twist.
7. The emergency darkroom lock body according to claim 1, characterized in that: The lock tongue retraction mechanism includes two mutually attractive magnetic pieces, one of which is fixed on the lock tongue and the other is fixed on the twist knob. The force of the mutual attraction between the two magnetic pieces always drives the lock tongue to retract into the lock housing.
8. The emergency darkroom lock body according to claim 1, characterized in that: The rear end portion of the impact spring piece is arranged in an arc shape, and the front end portion of the impact spring piece is fixedly connected to the lock tongue plate.
9. The emergency darkroom lock body according to claim 1, characterized in that: A lock tongue limiting end is formed on the front end of the lock tongue plate. After the lock tongue is extended, the lock tongue limiting end abuts against the inner end of the lock shell panel.
10. The emergency darkroom lock body according to claim 1, characterized in that: Two arc guide parts are formed on the upper and lower sides of the lock bolt plate, and the four arc guide parts enable the lock bolt plate to be clearance-matched with the upper and lower shells of the lock shell.