Lock body

Abstract

The invention discloses a lock body which comprises a lock box installed on a door and a fixing plate installed on a door frame, a gear and a rack are arranged on the lock box and the fixing plate respectively, and a locking gear ring of the gear is meshed with the rack in the door closing state. According to the lock body, the 360-degree clamping point of the gear structure is clamped into the rack, the clamping is tighter and tighter, a door is locked more silently, and use is more convenient and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of locks, and in particular relates to a lock body. Background Art

[0002] Door locks are used in various places such as homes and offices to resist abnormal opening and close entrance doors under normal circumstances. They mainly play a role in safety protection and anti-theft. Traditional door locks are formed by the lock tongue of the lock box popping out and inserting into the lock hole of the door frame. When locking this type of door lock, you need to insert a key and turn it to drive the lock tongue to retract, which produces noise. Another type of fingerprint lock uses an electric drive to close and lock the door. The drive retraction also has the disadvantages of generating noise and consuming electricity. Summary of the invention

[0003] The purpose of the present invention is to provide a lock body in view of the defects of the prior art.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A lock body comprises a lock box installed on a door and a fixing plate installed on a door frame. The lock box and the fixing plate are respectively provided with a gear and a rack. When the door is closed, the locking gear ring of the gear meshes with the rack.

[0006] Furthermore, the lock box includes a base plate and a panel perpendicular to one side of the base plate, the gear is installed through the panel, and a movable latch is movably installed on the base plate, and the movable latch movably engages with or disengages from the limiting gear ring of the gear.

[0007] Furthermore, the tooth grooves of the limiting gear ring and the movable latch tooth of the gear both include straight tooth surfaces and helical tooth surfaces. When the movable latch tooth is in meshing state with the limiting gear ring, the gear cannot rotate in one direction, but can rotate in the opposite direction under the action of external force.

[0008] Furthermore, the lock box also includes a toggle plate movably mounted on the bottom plate, a limiting groove is formed on the toggle plate, and the movable latch tooth is placed in the limiting groove; under normal conditions, the movable latch tooth is bonded to the limiting gear ring of the gear under the action of gravity, and when the toggle plate moves upward, the movable latch tooth in the limiting groove is driven to disengage from the limiting gear ring of the gear.

[0009] Furthermore, the lock box further comprises a lock core dial wheel, and the lock core dial wheel rotates to contact the raised portion on the dial plate, thereby driving the dial plate to move upward.

[0010] Furthermore, the lock box also includes a handle paddle which is rotatably mounted on the bottom plate at one end through a handle paddle shaft, and when rotating, the other end of the handle paddle contacts a rivet on the paddle to drive the paddle to move upward.

[0011] Furthermore, the lock box also includes a toggle plate tension spring, and two ends of the toggle plate tension spring are respectively connected to the toggle plate and the bottom plate.

[0012] Furthermore, a magnetic part is provided on the outer side of the locking gear ring, and the gear is axially movably installed on the panel. When the door is closed, the magnetic part attracts the fixed plate.

[0013] Furthermore, the lock box also includes a bent gear fixing plate and a spring and a spring stopper, the first panel of the gear fixing plate is located at the upper end of the movable latch, the limiting gear ring of the gear passes through the panel and the second panel of the gear fixing plate, and the spring and spring stopper are sequentially mounted on the shaft column at the front end of the limiting gear ring of the gear and fixed with screws.

[0014] Furthermore, the fixing plate is provided with adjustment holes, and the rack is installed at different positions of the adjustment holes by means of screws.

[0015] Furthermore, it also includes a rack connecting plate, and the rack and the rack connecting plate are installed on the front and back sides of the fixing plate by screws.

[0016] The technical solution of the present invention has the following beneficial effects: the door is locked by cooperating with a gear and a rack. After the door is closed, the locking gear ring of the gear can only rotate along the rack in the door closing direction. The locking gear ring gradually meshes with the rack in the door closing direction, so that the door is closed more and more tightly. The movable latching tooth meshes with the limiting gear ring of the gear under the action of gravity to limit the rotation of the gear in the door opening direction. Under normal circumstances, when the door needs to be opened, the key is turned or the handle is turned to drive the toggle plate through the handle paddle, so that the movable latching tooth is disengaged from the limiting gear ring, and the locking gear ring of the gear can be rotated to release the meshing state with the rack and then open the door. The magnetic part makes the outer side surface of the rear gear closer to the fixed plate on the door frame, and the gap between the door and the door frame is automatically adjusted. The gear fixing plate, spring and the like are used to cooperate to control the length of the gear extending out of the panel, which is conducive to better cooperation with the rack. The rack is installed at different positions of the adjustment hole to better adapt to the gear by adjusting the height. The lock body of the present invention uses the 360-degree card point of the gear structure to clamp into the rack, and the more it is clamped, the tighter it is, the quieter the door is locked, and the use is more convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a side view of the fixing plate;

[0018] Figure 2 It is the fixed plate split state diagram;

[0019] Figure 3 It is a schematic diagram of the meshing state of the gear and rack on the inner side of the fixed plate;

[0020] Figure 4 It is a schematic diagram of the internal structure of the lock box;

[0021] Figure 5 This is a disassembled diagram of the gear and related parts;

[0022] Figure 6 It is a schematic diagram of the inner side of the gear;

[0023] Figure 7 It is a side view of the movable latch teeth;

[0024] Figure 8 It is a top view of the movable latch teeth;

[0025] Fig. 9 It is a schematic diagram of the assembly of the limiting gear ring and the movable locking teeth of the gear;

[0026] Fig.10 Schematic diagram of the positional relationship between the toggle piece and the movable latch tooth;

[0027] Fig.11 It is a front view of the gear fixing plate;

[0028] Fig.12 is a top view schematic diagram of the gear fixing plate;

[0029] Fig.13 It is a schematic diagram of the state change of the lock cylinder dial wheel.

[0030] In the figure: 1 lock box, 1a bottom plate, 1b panel, 2 fixing plate, 2a adjustment hole, 3 rack, 4 rack connecting plate, 5 gear, 51 locking gear ring, 52 limiting gear ring, 6 gear fixing plate, 7 spring, 8 spring stopper, 9 screw, 10 magnetic part, 11 toggle plate, 11a limiting groove, 11b raised part, 12 toggle plate tension spring, 13 connecting part, 14 movable latch, 14a straight tooth surface, 14b oblique tooth surface, 15 lock cylinder dial wheel, 16 handle dial, 17 handle dial shaft, 18 rivet. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described in conjunction with the accompanying drawings to make the technical solution clearer and more understandable.

[0032] like Figure 1-13 As shown, this embodiment provides a lock body, including a lock box 1 installed on the door and a fixed plate 2 installed on the door frame, and a gear 5 and a rack 2 are respectively provided on the lock box 1 and the fixed plate 2. When the door is closed, the locking gear ring 51 of the gear 5 is meshed with the rack 2.

[0033] Traditional door locks require driving the lock tongue to extend and pop out, which causes noise. In addition, the gap between the lock tongue and the door frame needs to be adjusted when installing the lock tongue. If it is not adjusted properly, there will be shaking problems. In the lock body of this embodiment, the 360-degree card point of the locking gear ring 51 is engaged with the rack 2. After contact, the locking gear ring of the gear moves one tooth at a time along the rack in the direction of closing the door. No adjustment is required during installation. The door will become tighter and tighter when closed, and there will be no noise when closing the door.

[0034] The lock box 1 includes a bottom plate 1a and a panel 1b perpendicular to one side of the bottom plate. The gear 5 is installed through the panel 1b. A movable latch 9 is movably installed on the bottom plate 1. The movable latch 9 is movably engaged with or disengaged from the limit gear ring 52 of the gear. The multiple latch teeth of the movable latch 9 are arranged along an arc and are adapted to the limit gear ring 52. The movable latch 9 is disengaged from the limit gear ring 52, so that the locking gear ring 51 can rotate in the direction of opening the door to complete the door opening.

[0035] The tooth groove of the movable latch 14 includes a straight tooth surface 14a and a helical tooth surface 14b. Similarly, the limit gear ring of the gear also includes a straight tooth surface and a helical tooth surface, and is movably connected to the limit gear ring 52 of the gear; when the movable latch and the limit gear ring are in meshing state, the gear cannot rotate in one direction, and can rotate in the other direction under the action of external force. When the straight tooth surface of the limit gear ring 52 of the gear rotates in one direction, it can not continue to rotate when it catches the straight tooth surface 14a of the movable latch 14, and when the gear rotates in the opposite direction under the action of external force, the helical tooth surfaces of the two are separated from each other.

[0036] The lock box 1 also includes a toggle plate 11 movably mounted on the bottom plate 1a, a limiting groove 11a is formed on the toggle plate 11, and the movable latch 14 is placed in the limiting groove 11a; under normal conditions, the lower movable latch 14 is meshed with the limiting gear ring 52 of the gear under its own gravity, and an external force is applied to drive the movable latch in the limiting groove to disengage from the limiting gear ring of the gear when the toggle plate 11 moves upward. A strip-shaped long hole is formed on the toggle plate 11, and a column is formed on the bottom plate 1a, and the column passes through the strip-shaped long hole, so that the toggle plate 11 can move up and down along the length of the strip-shaped long hole.

[0037] The lock box 1 also includes a toggle plate tension spring 12, the two ends of which are connected to the toggle plate 11 and the bottom plate 1a respectively. When an external force is applied, the toggle plate 11 moves upward to compress the toggle plate tension spring 12, and when the external force is released, the toggle plate 11 moves downward to return to its original position under the restoring effect of the toggle plate tension spring 12.

[0038] The lock box 1 further comprises a lock core dial wheel 15 , and a user inserts a key into the lock core dial wheel 15 and rotates the dial wheel to contact the raised portion 11 b on the dial plate 15 , thereby driving the dial plate 15 to move upward, thereby realizing key unlocking.

[0039] The lock box 1 also includes a handle paddle 16 rotatably mounted on the bottom plate 1a at one end through a handle paddle shaft. When rotating, the other end of the handle paddle 16 contacts the protruding rivet 18 on the paddle plate 11, driving the paddle plate 18 to move upward, thereby realizing handle unlocking.

[0040] The locking gear ring 51 is provided with a magnetic part 10 on the outside, and the gear 5 is axially movably mounted on the panel 1b. When the door is closed, the magnetic part 10 attracts the fixed plate 1b. The gear is axially movably mounted on the through hole of the panel and can move axially, that is, the limiting gear ring of the gear can enter and exit the through hole. The magnetic part drives the gear to move outward to attract the metal fixed plate, and automatically adjusts the gap between the gear and the door frame.

[0041] The lock box 1 also includes a bent gear fixing plate 6, a spring 7, and a spring stopper 8. The first panel 61 of the gear fixing plate 6 is located at the upper end of the movable latch 14. The limit gear ring 52 of the gear passes through the through hole of the panel 1b and the through hole of the second panel 62 of the gear fixing plate. The spring 7 and the spring stopper 8 are sequentially sleeved on the shaft column at the front end of the limit gear ring 52 of the gear and fixed with screws 9. The gear fixing plate 6 is installed on the bottom plate 1a, and the spring stopper is fixed on the gear by screws to block the spring from detaching from the shaft column at the front end of the gear 5. The through hole of the second panel 62 is larger than the size of the shaft column but smaller than the size of the limit gear ring 52. Therefore, when moving axially, the gear can move to the outside of the panel 1b, but the inside is blocked by the second panel 62 and cannot move inward; when moving outward, the maximum stroke is when the spring stopper 8 touches the second panel 62.

[0042] Since there may be a gap between the door and the door frame when they are closed, in order to reduce the gap between the two and improve the sealing effect, a magnetic member 10 is arranged outside the gear 5. The magnetic member 10 is preferably made of magnetic steel, and the gap between the door frames is automatically adjusted by the magnetic steel. When the door is locked, the gear 5 is moved outwards to fit more closely on the fixed plate 2 through the magnetic steel attraction, and the spring 7 is compressed; when the door is opened, it is out of the attraction state, and the spring 7 is reset to drive the gear 5 to move inwards to return to the original position.

[0043] The fixing plate 2 is provided with an adjusting hole 2a, the length of which is arranged in the longitudinal direction, and the rack 3 is installed at different positions of the adjusting hole 2a by means of screws.

[0044] A rack connecting plate 6 is also provided on the fixing plate 2. The rack 3 and the rack connecting plate 6 are mounted on the front and back surfaces of the fixing plate 2 by screws.

[0045] By loosening the screws, the rack 3 can move up and down in the adjustment hole 2a of the fixing plate 2 to match the position of the locking gear ring 51 of the gear of the lock body.

[0046] When in use, the user unlocks the lock body by using a key or turning the handle paddle.

[0047] When the key is outside the door, the key is inserted into the lock cylinder and drives the lock cylinder dial wheel 15 to rotate, which drives the dial plate 11 to move upward, and then drives the movable locking tooth 14 on the dial to move upward, releasing the meshing state with the limiting gear ring of the gear 5, and the gear 5 can rotate. Then, when the door is pushed, the locking gear ring of the gear 5 is released and rotates relative to the rack 3 on the door frame, thereby opening the door lock.

[0048] In the room, i.e., on the inside of the door, the handle paddle 16 is manually rotated, and the handle paddle 16 rotates around the handle paddle shaft 17 fixed on the bottom plate 1a, driving the paddle 11 connected to the other end of the handle paddle 16 to move up, and then driving the movable latch 14 to move up to release the meshing state with the gear 5, so that the gear 5 can rotate to disengage from the rack 3 and open the door lock.

[0049] The lock body of the present invention has a gear and a rack that mesh with each other when the door is locked, and a gear and a rack that are disengaged when the door is open. The 360° meshing point of the locking gear ring and the rack is engaged, so no adjustment is required during installation. The door will get tighter and tighter when closed, and there will be no noise when closing the door. The installation and use are convenient and reliable. The gear lock does not require electrical locking, and unlocking only requires the lock core to drive the lock core dial inside the lock body, which consumes less electricity. It is more energy-efficient when matched with a fingerprint lock. Since there is no need to drive the lock tongue in and out, the probability of failure in the mechanical transmission process is greatly reduced, and the service life is longer.

[0050] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A lock body, characterized in that: The invention comprises a lock box installed on the door and a fixing plate installed on the door frame. The lock box and the fixing plate are respectively provided with a gear and a rack. When the door is closed, the locking gear ring of the gear meshes with the rack.

2. A lock body according to claim 1, characterized in that: The lock box comprises a bottom plate and a panel perpendicular to one side of the bottom plate, the gear is installed through the panel, and a movable latch is movably installed on the bottom plate, and the movable latch is meshed with the limiting gear ring of the gear under the action of gravity.

3. A lock body according to claim 2, characterized in that: The tooth grooves of the limiting gear ring and the movable latch teeth of the gear both include straight tooth surfaces and helical tooth surfaces. When the movable latch teeth are meshed with the limiting gear ring, the gear cannot rotate in one direction, but can rotate in the opposite direction under the action of external force.

4. A lock body according to claim 2, characterized in that: The lock box also includes a toggle plate movably mounted on the bottom plate, a limiting groove is formed on the toggle plate, and the movable latch tooth is placed in the limiting groove; under normal conditions, the movable latch tooth is bonded to the limiting gear ring of the gear, and when the toggle plate moves upward, the movable latch tooth in the limiting groove is driven to disengage from the limiting gear ring of the gear.

5. A lock body according to claim 4, characterized in that: The lock box further comprises a lock core dial wheel, which rotates to contact the raised portion on the dial plate, thereby driving the dial plate to move upward; Alternatively, the lock box further comprises a handle paddle which is rotatably mounted on the bottom plate at one end through a handle paddle shaft, and when rotating, the other end of the handle paddle contacts a rivet on the paddle to drive the paddle to move upward.

6. A lock body according to claim 4, characterized in that: The lock box also includes a toggle plate tension spring, and two ends of the toggle plate tension spring are respectively connected to the toggle plate and the bottom plate.

7. A lock body according to claim 2, characterized in that: A magnetic piece is arranged on the outer side of the locking gear ring, and the gear is axially movably mounted on the panel. When the door is closed, the magnetic piece attracts the fixed plate.

8. A lock body according to claim 7, characterized in that: The lock box also includes a bent gear fixing plate and a spring and a spring stopper. The first panel of the gear fixing plate is located at the upper end of the movable latch tooth. The limiting gear ring of the gear passes through the panel and the second panel of the gear fixing plate. The spring and the spring stopper are sequentially sleeved on the shaft column at the front end of the limiting gear ring of the gear and fixed with screws.

9. A lock body according to claim 1, characterized in that: The fixing plate is provided with an adjustment hole, and the rack is installed at different positions of the adjustment hole by means of screws.

10. A lock body according to claim 9, characterized in that: It also includes a rack connecting plate, and the rack and the rack connecting plate are installed on the front and back sides of the fixing plate by screws.

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