CN215520382U

CN215520382U - Anti-theft door lock

Info

Publication number: CN215520382U
Application number: CN202121471437.5U
Authority: CN
Inventors: 刘晋武; 王振贤; 熊奇; 稳国栋; 陈勇
Original assignee: Changyuan Contron Power Security Technology Co Ltd
Current assignee: Changyuan Contron Power Security Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-14
Anticipated expiration: 2031-06-30

Abstract

The utility model provides a security door lock, which comprises a front panel component, a lock body, a rear panel component and a square shaft, wherein the front panel component and the rear panel component are fixedly connected through threads, and the square shaft and the lock body are clamped between the front panel component and the rear panel component. The front panel assembly comprises a front panel, a first handle rotating limiting piece, a lock cylinder and a shifting piece, wherein the first handle penetrates through the front panel to be connected with the first handle rotating limiting piece. The rear panel assembly includes that rear panel, second handle rotate spacing piece, push pedal subassembly, knob, and the second handle is worn to establish the rear panel and is rotated spacing piece with the second handle and be connected, and the knob is worn to locate the rear panel and is connected with the push pedal subassembly. One end of the shifting piece is connected with the lock core, and the other end of the shifting piece is connected with the knob. The push plate subassembly rotates spacing piece to the second handle and carries on spacingly, and the push plate subassembly makes progress or moves down along with the rotation of knob. The anti-theft door lock disclosed by the utility model has the advantages of high stability and safety, good interchange and compatibility, simplicity and convenience in installation and low cost.

Description

Anti-theft door lock

Technical Field

The utility model relates to the technical field of locks, in particular to an anti-theft door lock.

Background

Along with the continuous improvement of living standards and the acceleration of life rhythm of people, the living room precaution consciousness is also continuously enhanced, and the anti-theft door lock is used as an important tool for guaranteeing the safety of families and property, and has the advantages of safety and stability, and can resist violent damages such as intentional damage, prank and intentional prying, drilling and the like. The existing anti-theft lock is complex in structure and poor in stability, compatibility and interchangeability. After the anti-theft lock is used for a long time, because the lock needs to be in a normally open state, a closed state, and is influenced by corrosion, aging and the like of the external environment, the conditions such as aging and the like easily occur, and the cost for replacing the lock is high.

In addition, the front panel and the rear panel of the existing anti-theft lock are generally provided with two square shafts, the shafts need to be installed indoors and outdoors, the installation process is complicated, the installation difficulty is high, the phenomena of unsmooth movement of the handle, easy damage of the lock body and the like easily occur, the linkage structure between the square shafts is complicated, the production and the processing are complicated, and the cost is too high.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a security door lock which comprises a front panel component, a rear panel component, a square shaft and a lock body, wherein the front panel component and the rear panel component are fixedly connected, and the square shaft and the lock body are clamped between the front panel component and the rear panel component. Front panel assembly includes front panel, first handle rotate spacing piece, lock core, plectrum, and first handle is worn to locate the front panel and rotates spacing piece with first handle and can dismantle the connection. The rear panel assembly includes that rear panel, second handle rotate spacing piece, push pedal subassembly, knob, and the second handle is worn to locate the rear panel and rotates spacing piece with the second handle and can dismantle the connection. The knob is arranged on the rear panel in a penetrating mode and is detachably connected with the push plate assembly, one end of the shifting piece is connected with the tail end of the lock cylinder, and the other end of the shifting piece is connected with the knob. The push plate assembly is used for rotating the limiting piece to limit the second handle, and the push plate assembly moves upwards or downwards along with the rotation of the knob. This structural design is simple, and spare part is few, drives the plectrum through the rotation of lock core and rotates, and then it is rotatory to drive the button, and the downward movement of drive push pedal subassembly relieves the handle spacing, accomplishes the unblock. Stability and security are high, and can realize changing a brand-new lock under the condition of not changing the lock body, exchange, compatibility are good.

Preferably, the push plate assembly comprises a limiting part, a locking plate, a poking plate and an arc-shaped sliding groove matched with the poking plate in a sliding mode, and a through hole is formed in the center of the poking plate. The poking plate can slide in the arc-shaped sliding groove, so that the limiting part is driven to move upwards or downwards.

Preferably, the second handle rotates spacing piece and includes spacing recess, and when the push pedal subassembly rebound, spacing portion got into spacing recess in, the handle can't rotate, was in the shutting state. When the push plate assembly moves downwards, the limiting groove is kept away from the limiting portion, and the handle can rotate and is in an unlocking state. The switching between the locking state and the unlocking state is realized along with the upward or downward movement of the push plate component.

Preferably, the back panel assembly comprises a pressure plate, and the pressure plate is in threaded connection with the back panel. And fixing the position of the pressing plate.

Preferably, the locking plate is provided with a sliding groove, and the push plate assembly moves up or down between the pressure plate and the rear plate along the sliding groove. The push plate assembly is limited in the left-right direction through the pressing plate, so that the push plate assembly can only move in the up-down direction.

Preferably, the knob is provided with a convex column, the convex column penetrates through the through hole, and when the knob drives the poking plate to rotate, the push plate assembly is driven to move upwards or downwards. The convex column passes through the through hole on the poking plate, so that the poking plate can be driven to rotate, and the structural design is compact.

Preferably, the projection is provided with spacing boss, and in the plectrum inserted spacing boss, spacing boss made the plectrum more stably insert in the projection of knob to when the plectrum drove the projection and rotates, the drive push pedal subassembly moved up or down.

Preferably, the first handle comprises a first handle and a first handle boss; the second handle comprises a second handle and a second handle boss; the end of first handle boss and the end of second handle boss are provided with the spacing portion of square shaft, and the both ends of square shaft overlap respectively establish the spacing portion of square shaft who connects in the spacing portion of square shaft of first handle and second handle. Only set up a square shaft between first handle and second handle, the installation procedure is simple and easy convenient, can save raw and other materials and a plurality of spare part simultaneously, simplifies the production and processing process, greatly reduced manufacturing cost.

Preferably, front panel assembly includes rand and torsional spring, and first handle boss includes first draw-in groove and second draw-in groove, and the rand can be dismantled and connect in first draw-in groove, and the torsional spring can be dismantled and connect in the second draw-in groove. Can make first handle connect on the front panel through the rand, prevent that it is not hard up. The handle can be reset in time through the torsion spring.

Preferably, the square shaft is movably connected to the lock body; under the state of unlocking, when the handle rotates to drive the square shaft to rotate, the lock body is driven to stretch. The rotation of square shaft drives the lock body to unlock.

According to the anti-theft door lock, the second handle rotation limiting piece is limited through the push plate assembly, the push plate assembly moves downwards or upwards along with the rotation of the knob to achieve unlocking and locking, the structural design is simple, the number of parts is small, the stability and the safety are high, a brand new lock can be replaced under the condition that a lock body is not replaced, and the interchange and compatibility are good; only set up a square shaft between first handle and second handle, the installation procedure is simple and easy convenient, can save raw and other materials and a plurality of spare part simultaneously, simplifies the production and processing process, greatly reduced manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described below.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a right side view of the present invention;

FIG. 3 is a front view of the front panel assembly of the present invention;

FIG. 4 is an exploded perspective view of the front panel assembly of the present invention;

FIG. 5 is an exploded perspective view of the back panel assembly of the present invention;

figure 6 is a front view of the back panel assembly of the utility model;

FIG. 7 is a sectional view taken along the line A-A in FIG. 6;

FIG. 8 is a schematic structural view of a back panel assembly of the present invention;

FIG. 9 is a schematic view of the back panel assembly latch condition of the present invention;

FIG. 10 is a schematic view of the back panel assembly of the present invention in an unlocked condition;

FIG. 11 is a schematic view of the construction of the pusher plate assembly of the present invention;

fig. 12 is a schematic view of the knob of the present invention.

Reference numerals:

1. a front panel assembly; 11. a front panel; 12. a first handle; 121. a first handle; 122. a first handle boss; 123. a square shaft limiting part; 124. a first card slot; 125. a second card slot; 13. the first handle rotates the limiting piece; 14. a lock cylinder; 15. a shifting sheet; 16. a torsion spring; 17. a collar; 18. a screw; 2. a rear panel assembly; 21. a rear panel; 22. a second handle; 221. a second handle; 222. a second handle boss; 23. the second handle rotates the limiting piece; 231. a limiting groove; 24. a push plate assembly; 241. a limiting part; 242. locking the plate; 2421. a sliding groove; 243. a poking plate; 244. an arc-shaped chute; 245. a through hole; 246. a toggle plate connecting piece; 247. a return spring; 25. a knob; 251. a convex column; 2511. a limiting boss; 26. pressing a plate; 3. a square shaft; 4. and a lock body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, 2 and 3, the utility model provides a security door lock, which comprises a front panel assembly 1, a rear panel assembly 2, a square shaft 3 and a lock body 4, wherein the front panel assembly 1 and the rear panel assembly 2 are fixedly connected through upper and lower screws, and the square shaft 3 and the lock body 4 are clamped between the front panel assembly 1 and the rear panel assembly 2.

As shown in fig. 4, the front panel assembly 1 includes a front panel 11, a first handle 12, a first handle rotation limiting sheet 13, a lock cylinder 14, a shifting sheet 15, a torsion spring 16, and a collar 17; first handle 12 wears to locate front panel 11 and rotates spacing piece 13 with first handle and can dismantle the connection, and first handle 12 includes first handle 121 and first handle boss 122, and first handle boss 122 includes first draw-in groove 124 and second draw-in groove 125, and rand 17 can be dismantled and connect in first draw-in groove 124, and torsional spring 16 can be dismantled and connect in second draw-in groove 125. Can make first handle 12 connect on front panel 11 through rand 17, prevent that it is not hard up, can make first handle 12 in time reset through torsional spring 16, the end of first handle boss 122 is provided with the spacing portion 123 of square shaft.

As shown in fig. 5, 6 and 7, the rear panel assembly 2 includes a rear panel 21, a second handle 22, a second handle rotation limiting sheet 23, a push plate assembly 24, a knob 25 and a press plate 26; the second handle 22 penetrates through the rear panel 21 and is detachably connected with the second handle rotation limiting piece 23, and the second handle 22 comprises a second handle 221 and a second handle boss 222; the end of the second handle boss 222 is provided with a square shaft limiting part 123.

As shown in fig. 11, the push plate assembly 24 includes a stopper 241, a locking plate 242, a toggle plate 243, an arc-shaped sliding groove 244 matching the sliding of the toggle plate, a toggle plate connector 246, and a return spring 247, and a through hole 245 is formed at the center of the toggle plate 243. The toggle plate 243 is inserted through the arc-shaped sliding slot 244 and connected to the toggle plate connector 246 by a snap or screw connection. The toggle plate 243 can slide in the arc-shaped sliding groove 244, so as to drive the limiting part 241 to move upwards or downwards, and switch between a limiting state and a releasing state. One end of the return spring 247 is sleeved on the toggle plate connector 246 and is mainly used for returning the toggle plate.

The pressing plate 26 is screwed to the rear plate 21, thereby fixing the position of the pressing plate 26. The locking plate 242 is provided with a slide groove 2421, and the push plate assembly 24 moves up or down between the pressure plate 26 and the rear panel 21 along the slide groove 2421. The push plate assembly 24 is limited in the left-right direction by the pressing plate 26 so as to be movable only in the up-down direction.

As shown in fig. 2, the knob 25 is inserted into the rear panel 21 and detachably connected to the push plate assembly 24, one end of the pick 15 is connected to the end of the lock cylinder 14, and the other end is connected to the knob 25. As shown in fig. 12, the knob 25 is provided with a convex column 251, the convex column 251 is provided with a limit boss 2511, the convex column 251 passes through the through hole 245 on the toggle plate 243, and the convex column 251 and the toggle plate 243 are fixed through the collar 17, so that the rotation of the knob drives the toggle plate 243 to rotate. The shifting piece 15 is inserted into the limit boss 2511 and fixed, so that the rotation of the shifting piece can drive the knob 25 to rotate, and the push plate assembly 24 is driven to move upwards or downwards.

As shown in fig. 8 and 9, the second handle rotation limiting piece 23 includes a limiting groove 231, and when the push plate assembly 24 moves upward, the limiting portion 241 enters the limiting groove 231, and the second handle 22 cannot rotate and is in a locked state. As shown in fig. 10, when the push plate assembly 24 moves downward, the limiting portion 241 is away from the limiting groove 231, and the second handle 22 can rotate and is in the unlocked state.

As shown in fig. 1, 2 and 4, the two ends of the square shaft 3 are respectively sleeved on the square shaft limiting part 123 of the first handle 12 and the square shaft limiting part 123 of the second handle 22, the square shaft 3 is movably connected to the lock body 4, and the lock body 4 is driven to stretch when the first handle 12 or the second handle 22 rotates to drive the square shaft 3 to rotate in the unlocking state. The rotation of square shaft 3, drive lock body 4 unblanks, only sets up a square shaft 3 between first handle 12 and second handle 22, and the installation procedure is simple and easy convenient, can save raw and other materials and a plurality of spare part simultaneously, simplifies production manufacturing procedure, greatly reduced manufacturing cost.

The principle of the opening and closing lock of the utility model is as follows: when the lock is unlocked, after a key is inserted, the key rotates to drive the lock cylinder 14 to rotate clockwise, the poking sheet 15 can poke the knob 25 to rotate 90 degrees, the driving clamp is arranged on the knob 25, the poking plate 243 slides in the arc-shaped sliding groove 244, so that the limiting part 241 of the push plate assembly 24 is driven to move downwards, the limiting of the second handle limiting rotation piece 23 is relieved, the second handle 22 can rotate, the first handle 12 can also rotate under the linkage action of the square shaft 3, and the lock body 4 is driven to stretch and retract, so that the unlocking is completed; during locking, a key is pulled out, the poking plate connecting piece 246 drives the poking plate 243 to slide to the initial position under the action of the reset spring 247, then the push plate assembly 24 is driven to move upwards, the limiting part 241 enters the limiting groove 231 of the second handle rotating limiting sheet 23, and the second handle 22 and the first handle 12 cannot rotate to complete locking.

The unlocking and locking principle of the rear panel is as follows: the knob 25 is twisted, and the knob 25 rotates to drive the shifting plate 243 to slide in the arc-shaped sliding groove 244, so that the pushing plate assembly is driven to move upwards to realize locking or move downwards to realize unlocking.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A kind of theft-proof door lock, including front panel assembly, back panel assembly, square shaft and lock body; the front panel assembly is fixedly connected with the rear panel assembly, and the square shaft and the lock body are clamped between the front panel assembly and the rear panel assembly; the method is characterized in that: the front panel assembly comprises a front panel, a first handle rotation limiting sheet, a lock cylinder and a shifting sheet; the first handle penetrates through the front panel and is detachably connected with the first handle rotation limiting piece; the rear panel assembly comprises a rear panel, a second handle rotation limiting sheet, a push plate assembly and a knob; the second handle penetrates through the rear panel and is detachably connected with the second handle rotation limiting piece; the knob penetrates through the rear panel and is detachably connected with the push plate assembly; one end of the plectrum is connected with the tail end of the lock cylinder, and the other end of the plectrum is connected with the knob; the push plate assembly is used for limiting the second handle rotation limiting piece, and moves upwards or downwards along with the rotation of the knob.

2. A security door lock according to claim 1, wherein: the push plate component comprises a limiting part, a locking plate, a poking plate and an arc-shaped sliding groove matched with the poking plate in a sliding mode, and a through hole is formed in the center of the poking plate.

3. A security door lock according to claim 2, wherein: the second handle rotation limiting piece comprises a limiting groove, and when the push plate assembly moves upwards, the limiting part enters the limiting groove; when the push plate assembly moves downwards, the limiting part is far away from the limiting groove.

4. A security door lock according to claim 2, wherein: the back panel assembly comprises a pressure plate, and the pressure plate is in threaded connection with the back panel.

5. The security door lock according to claim 4, wherein: the locking plate is provided with a sliding groove, and the push plate assembly moves upwards or downwards between the pressing plate and the rear panel along the sliding groove.

6. A security door lock according to claim 2, wherein: the knob is provided with a convex column which penetrates through the through hole, and when the knob drives the poking plate to rotate, the push plate assembly is driven to move upwards or downwards.

7. A security door lock according to claim 6, wherein: the convex column is provided with a limit boss, and the shifting piece is inserted into the limit boss.

8. A security door lock according to claim 1, wherein: the first handle comprises a first handle and a first handle boss; the second handle comprises a second handle and a second handle boss; the end of first handle boss with the end of second handle boss is provided with the spacing portion of square shaft, the both ends of square shaft overlap respectively establish connect in first handle the spacing portion of square shaft with the second handle the spacing portion of square shaft.

9. A security door lock according to claim 8, wherein: the front panel assembly comprises a clamping ring and a torsion spring, and the first handle boss comprises a first clamping groove and a second clamping groove; the rand can dismantle connect in first draw-in groove, the torsional spring can dismantle connect in the second draw-in groove.

10. A security door lock according to claim 6, wherein: the square shaft is movably connected to the lock body; under the unlocking state, when the handle rotates to drive the square shaft to rotate, the lock body is driven to stretch.