Novel lock body
By combining the oblique and square bolts, along with the design of a multi-layer key plate unit and positioning pins, the reliability problem of traditional mortise locks is solved, achieving high security and fast unlocking.
Patent Information
- Application Number
- CN202421879287.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The square bolt structure of traditional mortise locks is not reliable enough and is easily pried open, failing to meet the requirements of fire prevention and quick opening in special locations.
It adopts a combination structure of angled and square locking tongues. Through the multi-layer stacking of key plate units and the cooperation of positioning pins, the key plate and key move synchronously, which increases the difficulty of locking and unlocking the locking tongue. The synchronous unlocking of the angled locking tongue is achieved through the linkage of the deflection plate.
It improves the security and unlocking efficiency of door locks, enhances anti-theft performance, and ensures the stability and convenience of the lock cylinder structure.
Smart Images
Figure CN223523528U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of protection, especially relates to a door lock, specifically a novel lock body. BACKGROUND
[0002] At present, with the development of real estate, home decoration is more and more common, and the door lock is a key part. As the first line of defense for home protection, a good door lock can undoubtedly provide better protection. The door lock of the main door is basically a plug-in core lock. The plug-in core lock has the effect of multiple locking and high safety and reliability, which can meet the needs of anti-theft and other requirements. In particular, some special places have more special requirements for door locks. For example, the door lock of a large public place has special requirements for fireproofing and quick opening. The traditional plug-in core lock has only a transmission structure for driving the square tongue with a key, which can be easily opened or pried, and the anti-theft performance is poor and the safety cannot be met. Therefore, there is a need for a new lock body that can ensure the safety and stability of the plug-in core lock and improve the opening efficiency, so as to meet the safe and convenient requirements of the door lock. SUMMARY
[0003] The utility model solves the above-mentioned problems of the prior art and provides a novel lock body to solve the problem of insufficient reliability of the square tongue structure of the plug-in core lock.
[0004] The utility model discloses a novel lock body, which comprises a fixed shell, a fixed plate fixed to the side end of the door frame, an inclined lock tongue hole and a square tongue hole provided on the fixed plate, an inclined lock tongue and a square tongue provided in the inclined lock tongue hole and the square tongue hole respectively, an elastic reset structure of the inclined lock tongue, a moving piece driven to move horizontally by a key fixed to the inner side end of the square tongue, a key plate driven to move up and down by rotation of the key clamped in front of and behind the moving piece, a positioning pin protruding forward and backward on the moving piece, a gear recess groove provided on the key plate, and an adjusting structure in which the end of the positioning pin is engaged in the gear recess groove and the square tongue is locked in different gears during horizontal movement of the positioning pin. The key plate is composed of multiple key plate units stacked in the front and rear directions, and the spacing between different key plate units is set to form a matching structure corresponding to the tooth profile structure on the key. In this way, the synchronous movement of the moving piece connected to the square tongue and the key plate in the horizontal and vertical directions realizes the function of the square tongue by positioning the gear recess groove with the positioning pin, and the key plate composed of multiple key plate units stacked in the front and rear directions can set the spacing between different key plate units to form a tooth profile structure corresponding to the key, so that the door lock and the key can be used quickly without a lock core, the lock cannot be easily pried, and the safety is greatly improved.
[0005] As a further improvement of the utility model, the rack structure is arranged at the bottom of the moving piece, the rack structure is engaged with the corresponding protrusion on the key to form a transmission structure for rotating the key to drive the moving piece to move horizontally.
[0006] As a further improvement of the utility model, the fixed shell is internally fixed with a positioning block, the key plate is elastically reset connected with the positioning block in an up-down mode, the key plate is internally provided with a stand, the stand is sleeved with a spring, and one end of the spring is pressed on the key plate and the other end is pressed on the positioning block. The stand of the key plate is used for sleeving the spring, and the up-down elastic reset connection of the key plate is realized by the mode that one end of the spring is pressed on the key plate and the other end is pressed on the positioning block.
[0007] As a further improvement of the utility model, the fixed shell is internally fixed with a positioning block, the key plate is elastically reset connected with the positioning block in an up-down mode, the key plate is internally provided with a stand, the stand is sleeved with a spring, and one end of the spring is pressed on the key plate and the other end is pressed on the positioning block. The stand of the key plate is used for sleeving the spring, and the up-down elastic reset connection of the key plate is realized by the mode that one end of the spring is pressed on the key plate and the other end is pressed on the positioning block.
[0008] As a further improvement of the utility model, the fixed shell is internally fixed with a positioning block, the key plate is elastically reset connected with the positioning block in an up-down mode, the key plate is internally provided with a stand, the stand is sleeved with a spring, and one end of the spring is pressed on the key plate and the other end is pressed on the positioning block. The stand of the key plate is used for sleeving the spring, and the up-down elastic reset connection of the key plate is realized by the mode that one end of the spring is pressed on the key plate and the other end is pressed on the positioning block.
[0009] As a further improvement of the utility model, the fixed shell is internally fixed with a positioning block, the key plate is elastically reset connected with the positioning block in an up-down mode, the key plate is internally provided with a stand, the stand is sleeved with a spring, and one end of the spring is pressed on the key plate and the other end is pressed on the positioning block. The stand of the key plate is used for sleeving the spring, and the up-down elastic reset connection of the key plate is realized by the mode that one end of the spring is pressed on the key plate and the other end is pressed on the positioning block.
[0010] As further improvement of the utility model, a group of guide columns are fixed in the fixed shell, the moving piece is provided with front and rear through horizontal guide grooves, the key plate is provided with front and rear through vertical guide grooves, and the guide columns are located in the guide grooves respectively. The guide columns are used for guiding the horizontally moving moving piece and the vertically moving key plate, so that the moving piece and the key plate always move along the predetermined track during the moving process, and the normal door lock function is realized.
[0011] The utility model has the advantages of reasonable and compact structure, natural positioning and locking between the positioning pin and the gear recess through the cross synchronous movement of the moving piece and the key plate in horizontal and vertical directions, effective realization of the function of the square lock tongue without the lock core structure, great increase of the initial difficulty through the tooth profile structure on the key corresponding to the key plate unit stack formed by the key plate, linkage unlocking of the bevel lock tongue when the square lock tongue is unlocked to the innermost end and driven by the top pressing end to achieve the purpose of linkage unlocking of the bevel lock tongue, synchronous unlocking effect of the linkage of the square lock tongue and the bevel lock tongue, further guarantee of the door lock safety, good use effect and suitability for promotion. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structural schematic view of the utility model;
[0013] Figure 2 It is a structural schematic view of the utility model;
[0014] Figure 3 It is a left view of the utility model;
[0015] Figure 4 It is Figure 3 It is a sectional view in C-C direction;
[0016] Figure 5 It is a structural schematic view of the key plate formed by the moving piece and the key plate unit stack.
[0017] Mark explanation: fixed shell 1, fixed plate 2, bevel lock tongue 3, square lock tongue 4, moving piece 5, key plate 6, positioning pin 7, gear recess 8, rack part 9, positioning block 10, stand column 11, spring 12, deflection plate 13, top pressing end 14, guide column 15. DETAILED DESCRIPTION
[0018] The utility model will be further described in connection with the drawings:
[0019] With reference to the drawings: the new lock body in this embodiment, including the assembled fixed shell 1, the fixed shell 1 side end is fixed in the fixed plate 2 of the door frame side end, the fixed plate 2 is respectively provided with the oblique lock tongue hole and the square lock tongue hole, the oblique lock tongue hole and the square lock tongue hole are respectively provided with the oblique lock tongue 3 and the square lock tongue 4, the oblique lock tongue 3 is the elastic reset structure, the inside end of the square lock tongue 4 is fixed with the moving piece 5 driven by the key to move horizontally, the moving piece 5 is respectively provided with the key plate 6 driven by the key to rotate and move up and down, the moving piece 5 is provided with the front and rear clamping position pin 7, the key plate 6 is provided with the gear position groove 8 arranged continuously left and right, the end of the position pin 7 is matched and clamped in the different gear position groove 8 that can move up and down, forming the adjustment structure that the square lock tongue 4 is locked in different gears; the key plate 6 is composed of a plurality of key plate units stacked along the front and rear direction, the spacing between different key plate units is set, forming the matching structure corresponding to the tooth shape structure on the key.
[0020] The moving piece 5 is provided with the rack part 9 of the rack structure at the bottom, the rack part 9 is engaged with the corresponding protrusion on the key to form the transmission structure that the key rotation drives the moving piece 5 to move horizontally.
[0021] The fixed shell 1 is fixed with the positioning block 10, the key plate 6 is connected with the positioning block 10 in an up and down elastic reset mode, the key plate 6 is provided with the stand column 11 at the top, the stand column 11 is sleeved with the spring 12, one end of the spring 12 is pressed on the key plate 6 and the other end is pressed on the positioning block 10. Preferably, the stand column 11 is arranged on each key plate unit, each layer of key plate unit is independently connected with the positioning block 10 in an up and down elastic reset mode.
[0022] The fixed shell 1 is rotatably connected with the deflection plate 13, the moving piece 5 is provided with the pressing end 14 that deflects the deflection plate 13 by pressing to make it deflect, the top of the deflection plate 13 is correspondingly pressed on the tail end inside the oblique lock tongue 3 when it deflects to make the oblique lock tongue 3 retract to form the synchronous unlocking structure that the square lock tongue 4 links the oblique lock tongue 3 when unlocking.
[0023] The gear position groove 8 is symmetrically distributed upward and downward, the upward and downward gear position grooves 8 are channels for the position pin 7 to pass through, the top of the gear position groove 8 on the front and rear adjacent key plate unit is staggered in height and the distance between the top of the upward and downward gear position grooves 8 on the same key plate unit is the width of the channel, so that the key plate unit moves up and down to form the channel by matching the key tooth shape rotation, forming the square lock opening and closing structure that the position pin 7 moves and positions in the different gear position grooves 8.
[0024] A group of guide columns 15 are fixed in the fixed shell 1, the moving piece 5 is provided with the front and rear through horizontal guide groove, the key plate 6 is provided with the front and rear through vertical guide groove, and the guide columns 15 are respectively located in the guide grooves.
[0025] Although the utility model has carried on the illustration and the description through the reference preferred embodiment, but, the professional ordinary skilled person should understand, can make various changes in form and detail in the scope of claims.
Claims
1. A new lock body, comprising an assembled fixed housing (1), the side end of which is a fixed plate (2) fixed to the side end of a door frame, the fixed plate (2) is respectively provided with an oblique lock tongue hole and a square lock tongue hole, and the oblique lock tongue hole and the square lock tongue hole are respectively provided with an oblique lock tongue (3) and a square lock tongue (4), the oblique lock tongue (3) is an elastic reset structure, characterized in that: The inside end of the square bolt (4) is fixed with a moving piece (5) which moves transversely driven by the key, the front and back of the moving piece (5) is clamped with a key plate (6) which moves up and down reset driven by the key rotation, the moving piece (5) is provided with a front and back protruding positioning pin (7), the key plate (6) is provided with a left and right continuous setting gear recess (8), the end of the positioning pin (7) is matched and clamped in the different gear recess (8) which moves up and down reset during the transverse movement, forming the adjusting structure that the square bolt (4) is locked in different gears; The key plate (6) is composed of a plurality of key plate units stacked in the front and back direction, the size of the spacing between different key plate units is set to form a matching structure corresponding to the tooth shape structure on the key. 2. The new lock body according to claim 1, characterized in that: The bottom of the moving piece (5) is provided with a rack structure of the rack (9), the rack (9) is engaged and matched with the corresponding protrusion on the key to form a transmission structure that the key rotation drives the moving piece (5) to move transversely.
3. The new lock body according to claim 1, characterized in that: The fixed shell (1) is fixed with a positioning block (10), the key plate (6) is connected with the positioning block (10) in an up and down elastic reset manner, the top of the key plate (6) is provided with a stand column (11), the stand column (11) is sleeved with a spring (12), one end of the spring (12) is pressed on the key plate (6) and the other end is pressed on the positioning block (10).
4. The new lock body according to claim 1, characterized in that: The fixed shell (1) is rotatably connected with a deflection plate (13), the moving piece (5) is provided with a pressing end (14) which deflects the deflection plate (13) by moving to press it, the top of the deflection plate (13) is correspondingly pressed on the tail end inside the latch bolt (3) when it is deflected, so that the latch bolt (3) is retracted to form a synchronous unlocking structure when the square bolt (4) is linked with the latch bolt (3) to unlock.
5. The new lock body according to claim 1, characterized in that: The gear recesses (8) are symmetrically distributed up and down, the up and down gear recesses (8) are channels for the positioning pin (7) to pass through, the top of the gear recess (8) on the front and back adjacent key plate units is staggered in height, and the distance between the top of the up and down gear recesses (8) on the same key plate unit is the width of the channel, so that the key plate unit moves up and down to form a channel when the key is rotated and matched with the key tooth shape, forming a square bolt opening and closing structure that the positioning pin (7) moves and positions in different gear recesses (8).
6. The new lock body according to claim 3, characterized by: The stand column (11) is provided on each key plate unit, and each layer of key plate unit is independently connected with the positioning block (10) in an up and down elastic reset manner.
7. The new lock body according to claim 1, characterized by: The fixed shell (1) is fixed with a group of guide columns (15), the moving piece (5) is provided with a front and back through transverse guide groove, the key plate (6) is provided with a front and back through vertical guide groove, and the guide columns (15) are respectively located in the guide grooves.