Lock body

Abstract

The utility model 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. The lock body is clamped into the rack through the 360-degree clamping point of the gear structure, the clamping is tighter and tighter, a door is locked more silently, and use is more convenient and reliable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of lockset, concretely relates to a lock body. BACKGROUND

[0002] The door lock is used for resisting abnormal opening under normal circumstances, closing the entrance door, and mainly plays the role of safety protection and theft prevention in various places such as family and office. The traditional door lock is the lock tongue of the lock box that is inserted into the lock hole of the door frame to form the door lock. When locking, the key needs to be inserted and rotated to drive the lock tongue to extend and retract, and the extension and retraction produce noise. Another kind of fingerprint lock is locked by driving the lock tongue to close the door, and the driving extension and retraction also have the defects of noise and power consumption. SUMMARY

[0003] The utility model aims at the defects of prior art, and provides a lock body.

[0004] In order to realize the above object, the utility model adopts the following technical scheme:

[0005] A lock body, comprising a lock box mounted on a door and a fixed plate mounted on a door frame, wherein the lock box and the fixed plate are respectively provided with a gear and a rack, and the locking gear ring of the gear is engaged with the rack in a closed state.

[0006] Further, 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 clamping tooth is movably installed on the bottom plate and engaged with or disengaged from the limiting gear ring of the gear.

[0007] Further, the limiting gear ring of the gear and the tooth groove of the movable clamping tooth both comprise a straight tooth surface and an inclined tooth surface, and in the engaged state of the movable clamping tooth and the limiting gear ring, the gear cannot rotate in one direction and can rotate in the opposite direction under the action of external force.

[0008] Still further, the lock box further comprises a pushing piece movably installed on the bottom plate, the pushing piece is provided with a limiting groove, and the movable clamping tooth is arranged in the limiting groove; in a normal state, the movable clamping tooth is adhered to the limiting gear ring of the gear under the action of gravity, and when the pushing piece moves upward, the movable clamping tooth in the limiting groove is disengaged from the limiting gear ring of the gear.

[0009] Still further, the lock box further comprises a lock core pushing wheel, the lock core pushing wheel is in contact with the protruding part on the pushing piece when rotating, and drives the pushing piece to move upward.

[0010] Still further, the lock box further comprises a handle pushing piece rotatably installed on the bottom plate through a handle pushing shaft, and when rotating, the handle pushing piece is in contact with the rivet on the pushing piece, and drives the pushing piece to move upward.

[0011] Further, the lock box further comprises a toggle piece tension spring, and two ends of the toggle piece tension spring are connected with the toggle piece and the bottom plate respectively.

[0012] Further, the lock gear ring is provided with a magnetic element, and the gear is movably mounted on the panel, and the magnetic element attracts the fixed plate in the closed state.

[0013] Further, the lock box further comprises a bent gear fixing plate, a spring and a spring stopper, the first panel of the gear fixing plate is located on the upper end of the movable clamping tooth, the limiting gear ring of the gear passes through the second panel of the gear fixing plate and the panel, and 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 are fixed by screws.

[0014] Further, the fixed plate is provided with an adjusting hole, and the rack is installed at different positions of the adjusting hole by screws.

[0015] Further, the lock box further comprises a rack connecting plate, and the rack and the rack connecting plate are installed on the front and back surfaces of the fixed plate by screws.

[0016] By adopting the technical scheme of the utility model, the utility model has the beneficial effects that: the gear and the rack are adopted to realize the door locking, the locking gear ring of the gear can only rotate along the rack in the door closing direction after the door is closed, the locking gear ring gradually engages with the rack in the door closing direction tooth by tooth, so that the door is closed more tightly, the movable clamping tooth is engaged 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 the normal state, when the door needs to be opened, the toggle piece is driven by the handle toggle piece to make the movable clamping tooth disengage from the limiting gear ring by the key toggle or the rotation of the handle, so that the locking gear ring of the gear can rotate and disengage from the rack, and then the door is opened; the rear gear outer side is more closely attached to the fixed plate on the door frame by the magnetic element, so that the gap between the door and the door frame is automatically adjusted; the length of the gear extending out of the panel is controlled by the gear fixing plate, the spring and the like, so that the gear and the rack are better matched; the rack is installed at different positions of the adjusting hole, and the height is adjusted to better match the gear; the lock body of the utility model utilizes the 360-degree clamping point of the gear structure to clamp into the rack, and the door is closed more tightly and more quietly, and the utility model is more convenient and reliable to use. BRIEF DESCRIPTION OF DRAWINGS

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

[0018] Figure 2 is a fixed plate disassembled state view;

[0019] Figure 3 is a schematic view of the gear and the rack engaged in the inner side of the fixed plate;

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

[0021] Figure 5 This is an exploded view of the gear and related parts;

[0022] Figure 6 This is a schematic diagram of the inner surface of the gear;

[0023] Figure 7 This is a side view of the movable retaining teeth;

[0024] Figure 8 This is a top view of the movable retaining teeth;

[0025] Figure 9 This is an assembly diagram of the gear's limiting gear ring and movable retaining gear;

[0026] Figure 10 This is a schematic diagram showing the positional relationship between the actuating piece and the movable retaining tooth;

[0027] Figure 11 This is a front view of the gear fixing plate;

[0028] Figure 12 This is a top view of the gear fixing plate;

[0029] Figure 13 This is a schematic diagram showing the changes in the state of the lock cylinder dial.

[0030] In the diagram: 1 lock box, 1a base 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 stop, 9 screw, 10 magnetic component, 11 actuating plate, 11a limiting groove, 11b protrusion, 12 actuating plate tension spring, 13 connector, 14 movable locking tooth, 14a straight tooth surface, 14b helical tooth surface, 15 lock cylinder dial wheel, 16 handle dial, 17 handle dial shaft, 18 rivet. Detailed Implementation

[0031] The specific solutions and embodiments of this utility model will be further described in conjunction with the accompanying drawings, making the technical solution clearer and more understandable.

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

[0033] The traditional door lock needs to drive the lock tongue to extend and retract, which produces noise, and the lock tongue needs to be adjusted when installed to adjust the gap between the lock tongue and the door frame, and if not adjusted properly, there will be a shaking problem. In the lock body of the embodiment, the 360-degree clamping points of the locking gear ring 51 are clamped with the gear rack 2, after contact, the locking gear ring of the gear is clamped tooth by tooth along the gear rack to the door closing direction, and no adjustment is required during installation. The door is closed and the door is closed. When closing the door, there will be no noise.

[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, the movable clamping tooth 9 is movably installed on the bottom plate 1a, and the movable clamping tooth 9 is movably connected with the limiting gear ring 52 of the gear. A plurality of clamping teeth of the movable clamping tooth 9 are arranged along an arc and are matched with the limiting gear ring 52. The movable clamping tooth 9 is disengaged from the limiting gear ring 52, so that the locking gear ring 51 can rotate to the door opening direction, and the door opening is completed.

[0035] The gear slot of the movable clamping tooth 14 includes a straight tooth surface 14a and an inclined tooth surface 14b, and the limiting gear ring of the gear also includes a straight tooth surface and an inclined tooth surface, and is movably connected with the limiting gear ring 52 of the gear; in the meshing state of the movable clamping tooth and the limiting gear ring, 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 limiting gear ring 52 of the gear is clamped with the straight tooth surface 14a of the movable clamping tooth 14 in one direction, it cannot continue to rotate, and when the limiting gear ring 52 of the gear is reversely rotated under the action of external force, the inclined tooth surfaces of the two are disengaged from each other.

[0036] The lock box 1 further comprises a push piece 11 movably installed on the bottom plate 1a, the push piece 11 is provided with a limiting groove 11a, and the movable clamping tooth 14 is arranged in the limiting groove 11a; in a normal state, the movable clamping tooth 14 is engaged with the limiting gear ring 52 of the gear under its own gravity, and when the push piece 11 is moved upward under the action of external force, the movable clamping tooth in the limiting groove is disengaged from the limiting gear ring of the gear. A strip-shaped long hole is formed in the push piece 11, a stand is arranged on the bottom plate 1a, and the stand passes through the strip-shaped long hole, so that the push piece 11 can move up and down along the length direction of the strip-shaped long hole.

[0037] The lock box 1 further comprises a push piece tension spring 12, and the two ends of the push piece tension spring 12 are respectively connected with the push piece 11 and the bottom plate 1a. When the push piece 11 is moved upward under the action of external force, the push piece tension spring 12 is compressed, and after the external force is removed, the push piece 11 moves downward to the original position under the restoring action of the push piece tension spring 12.

[0038] The lock box 1 further comprises a lock cylinder push wheel 15, a user inserts a key into the lock cylinder push wheel 15 to rotate and contact a protruding portion 11b on the push piece 15, so as to drive the push piece 15 to move upward, thereby realizing key unlocking.

[0039] The lock box 1 further comprises a handle knob 16 rotatably mounted on the bottom plate 1a by a handle knob rotating shaft, and the other end of the handle knob 16 is in contact with the rivet 18 protruding on the knob 11 when the handle knob 16 is rotated, so as to drive the knob 11 to move upwards, thereby achieving the handle unlocking.

[0040] The lock gear ring 51 is provided with a magnetic member 10 on the outside, and the gear 5 is axially movably mounted on the panel 1b, and the magnetic member 10 is attracted to the fixed plate 1b in the closed state. 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 or exit the through hole, and the magnetic member drives the gear to move outward to attract the fixed plate made of metal material, thereby automatically adjusting the gap between the gear and the door frame.

[0041] The lock box 1 further comprises 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 clamping tooth 14, the limiting 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, and the spring 7 and the spring stopper 8 are sequentially sleeved on the shaft column at the front end of the limiting gear ring 52 of the gear and are fixed by the screw 9. The gear fixing plate 6 is mounted on the bottom plate 1a, and the spring stopper is fixed on the gear by the screw to block the spring from being separated 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 limiting gear ring 52, so that when moving axially, the gear can move outwardly to the outside of the panel 1b, but cannot move inwardly due to the blocking of the second panel 62; when moving outwardly, the maximum stroke is reached when the spring stopper 8 touches the second panel 62.

[0042] Since there may be a gap between the door and the door frame in the closed state, in order to reduce the gap between the door and the door frame and improve the sealing effect, a magnetic member 10 is arranged on the outside of the gear 5, and the magnetic member 10 is preferably made of a magnetic steel, which is used to automatically adjust the gap between the door frame. When the door is locked, the magnetic steel is attracted to drive the gear 5 to move outward to fit on the fixed plate 2, and the spring 7 is compressed; when the door is opened, the attraction is released, and the spring 7 is reset to drive the gear 5 to move inward to return to the original position.

[0043] The fixed plate 2 is provided with an adjusting hole 2a, and the adjusting hole 2a is longitudinally arranged, and the rack 3 is mounted at different positions of the adjusting hole 2a by screws.

[0044] The fixed plate 2 is further provided with a rack connecting plate 6, and the rack 3 and the rack connecting plate 6 are mounted on the front and back surfaces of the fixed plate 2 by screws.

[0045] When the screws are loosened, the rack 3 can move up and down in the adjusting hole 2a of the fixed plate 2, which is used to match whether the position of the locking gear ring 51 of the gear of the lock body is consistent.

[0046] In use, the user unlocks the lock body by using a key or a knob.

[0047] When outside, the key is inserted into the lock core to drive the lock core dial 15 to rotate, drive the dial 11 to move upwards, and further drive the movable pawl 14 on the dial to move upwards to release the meshing state with the limiting ring gear of the gear 5, so that the gear 5 can rotate, and when the door is pushed, the locking ring gear of the gear 5 is released to rotate relative to the rack 3 on the door frame, and the door lock is opened.

[0048] When inside, the handle dial 16 is manually rotated, the handle dial 16 is rotated around the handle dial shaft 17 fixed on the bottom plate 1a, drives the dial 11 connected to the other end of the handle dial 16 to move upwards, and further drives the movable pawl 14 to move upwards to release the meshing state with the gear 5, so that the gear 5 can rotate and disengage from the rack 3, and the door lock is opened.

[0049] The lock body of the utility model, the gear and the rack are mutually engaged in the door locking state, and the gear and the rack are disengaged in the door opening state. Through the 360° meshing and clamping points of the locking ring gear and the rack, adjustment is not required during installation, the door is more tightly clamped after being closed, and noise is not generated when the door is closed, so that the installation and use are convenient and reliable. The gear lock does not need to be locked by electricity, and the lock is opened only by the lock core transmission to open the lock core dial inside the lock body, so that the power consumption is less, the application in the fingerprint lock is more energy-saving, the driving of the lock tongue is not required, the probability of failure generated in the mechanical transmission process is greatly reduced, and the service life is longer.

[0050] Note that the above is only a preferred embodiment of the utility model and the technical principle applied. Those skilled in the art will understand that the utility model is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the protection scope of the utility model. Therefore, although the utility model is described in more detail through the above embodiments, the utility model is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the utility model concept, and the scope of the utility model is determined by the appended claims.

Claims

1. A lock body, characterized in that The lock box and the fixed plate are provided with gear and rack respectively, the locking ring of the gear is engaged with the rack in the closed state; 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 the movable clamping tooth is movably installed on the bottom plate and engaged with the limiting ring of the gear under the action of gravity.

2. A lock body as claimed in claim 1, wherein The limiting ring of the gear and the tooth groove of the movable clamping tooth both comprise straight tooth surface and inclined tooth surface, the gear cannot rotate in one direction and can rotate in the opposite direction under the action of external force in the engaged state of the movable clamping tooth and the limiting ring.

3. A lock body as defined in claim 1, wherein The lock box further comprises a pushing piece movably installed on the bottom plate, the pushing piece is provided with a limiting groove, and the movable clamping tooth is arranged in the limiting groove; the movable clamping tooth is adhered to the limiting ring of the gear in the normal state, and the movable clamping tooth in the limiting groove is separated from the limiting ring of the gear when the pushing piece is moved upward.

4. A lock body as claimed in claim 3, wherein The lock box further comprises a lock core pushing wheel, the lock core pushing wheel is in contact with the protruding part on the pushing piece through rotation, and the pushing piece is moved upward. Alternatively, the lock box further comprises a handle pushing piece rotatably installed on the bottom plate through a handle pushing shaft, and the handle pushing piece is in contact with the rivet on the pushing piece through rotation, and the pushing piece is moved upward.

5. A lock body as claimed in claim 3, wherein The lock box further comprises a pushing piece tension spring, and the pushing piece tension spring is connected with the pushing piece and the bottom plate at both ends.

6. A lock body according to claim 1 wherein, The outer side of the locking ring is provided with a magnetic part, the gear shaft is movably installed on the panel, and the magnetic part is attracted to the fixed plate in the closed state.

7. A lock body as claimed in claim 6 wherein, The lock box further comprises a bent gear fixing plate, a spring and a spring stopper, the first panel of the gear fixing plate is located at the upper end of the movable clamping tooth, the limiting ring of the gear passes through the panel and the second panel of the gear fixing plate, and the spring and the spring stopper are sequentially sleeved on the shaft column at the front end of the limiting ring of the gear and fixed by screws.

8. A lock body according to claim 1 wherein, The fixed plate is provided with an adjusting hole, and the rack is installed at different positions of the adjusting hole through screws.

9. A lock body as claimed in claim 8, wherein The lock box further comprises a rack connecting plate, and the rack and the rack connecting plate are installed on the front and back surfaces of the fixed plate through screws.

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