CN108894596B

CN108894596B - Handle mouth and anti-theft lock comprising same

Info

Publication number: CN108894596B
Application number: CN201810688790.5A
Authority: CN
Inventors: 黄锡军; 李明
Original assignee: Guangdong Yunhui Hardware Industry Co ltd
Current assignee: Guangdong Yunhui Hardware Industry Co ltd
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2020-06-05
Anticipated expiration: 2038-06-28
Also published as: CN108894596A

Abstract

The invention discloses a handle nozzle, which comprises a nozzle body and a limiting slide block, wherein one end of the nozzle body is provided with a boss used for connecting a handle, the other end of the nozzle body is provided with a lock cylinder accommodating hole used for sleeving a lock cylinder, and the nozzle body is also provided with a limiting slide groove used for accommodating the limiting slide block; the bottom of the limiting slide block is provided with a pair of limiting front foot and a limiting rear foot, and one end of the limiting slide block, which is close to the handle, is also provided with a clamping block; the limiting sliding groove comprises a limiting front groove and a limiting rear groove which are arranged in pairs, the limiting front groove is used for accommodating the limiting front foot, the limiting rear groove is used for accommodating the limiting rear foot, and a clamping groove is further formed in the nozzle body. The invention also discloses an anti-theft lock. The handle nozzle improves the anti-theft capability of the anti-theft lock comprising the handle nozzle, simultaneously effectively protects the structures of the handle, the handle nozzle, the lock cylinder and the like exposed outside the door plate, and is convenient and rapid to install.

Description

Handle mouth and anti-theft lock comprising same

Technical Field

The invention relates to the technical field of mechanical door locks, in particular to a handle nozzle and an anti-theft lock comprising the same.

Background

Currently, commercially available anti-theft locks all comprise an inner handle, an outer handle, an inner panel, an outer panel, a lock cylinder, a lock body structure and the like. The inner handle and the outer handle are respectively sleeved with the lock cylinder, when the anti-theft lock is installed, the lock body structure is firstly embedded into the door plate from the side face of the door plate, then the lock cylinder is inserted into the lock body structure, the lock cylinder is inserted into the inner panel and the outer panel from two sides of the door plate, therefore, the lock body structure, the lock cylinder and the inner panel and the outer panel are assembled together, the inner panel and the outer panel of the inner side and the outer side are fixed on the inner side and the outer side of the door plate through screws, finally, the inner handle and the outer handle are connected to the lock cylinder, and the lock body structure, the lock cylinder, the inner panel and the.

However, the existing anti-theft lock is installed inside and outside separately, namely, the installation of the inner side handle and the inner side panel is performed separately from the installation of the outer side handle and the outer side panel, and finally, the inner side handle and the outer side panel are locked by screws. When stealing, still can be through from the door outside back-out screw and then demolish outside handle, outside panel, and then realize stealing the property or destroy and expose in the outside handle of the door outside, lock structures such as outside panel, can not realize the theftproof mesh well, also can not protect the lock body outside part well. In addition, the anti-theft lock which is fixedly installed by means of a plurality of screws has complex installation process and inconvenient installation.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a handle mouth to solve the problems that the inner and outer handles of the door panel of the existing anti-theft lock are fixed on the door panel through bolts, the anti-theft capability is insufficient, the outer lock body structure of the door cannot be well protected, and the like.

One of the objectives of the present invention is to provide an anti-theft lock, which includes the above-mentioned handle nozzle, so as to solve the problems of the prior anti-theft lock, such as the bolt or other fixing mechanism is exposed outside the door panel, the anti-theft capability is insufficient, and the lock body structure outside the door cannot be well protected.

One of the purposes of the invention is realized by adopting the following technical scheme:

a handle mouth comprises a mouth body and a limiting sliding block, wherein one end of the mouth body is provided with a boss used for being connected with a handle, the other end of the mouth body is provided with a lock cylinder accommodating hole used for being sleeved with a lock cylinder, and the mouth body is also provided with a limiting sliding groove used for accommodating the limiting sliding block;

the bottom of the limiting slide block is provided with a pair of limiting front foot and a limiting rear foot, and one end of the limiting slide block close to the handle is also provided with a clamping block; the limiting sliding groove comprises a limiting front groove and a limiting rear groove which are arranged in pair, the limiting front groove is used for containing the limiting front foot, the limiting rear groove is used for containing the limiting rear foot, and a clamping groove is further formed in the nozzle body;

when the lock cylinder is inserted into the lock cylinder accommodating hole, the limiting front pin is accommodated in the limiting front groove, the limiting rear pin is accommodated in the limiting rear groove, the limiting sliding block is embedded into the end limiting groove, and the lock cylinder cannot be pulled out of the lock cylinder accommodating hole; when the lock cylinder is further inserted into the lock cylinder accommodating hole, the clamping block is clamped in the clamping groove, the limiting rear foot is erected between the limiting front groove and the limiting rear groove, the limiting sliding block exits from the end limiting groove, and the lock cylinder can be pulled out of the lock cylinder accommodating hole.

Furthermore, the handle mouth also comprises a lock cylinder, one end of the lock cylinder is provided with a lock cylinder end head, an end head limiting groove is arranged on the lock cylinder end head, the distance between the paired limiting front legs is greater than the width of the end head limiting groove and smaller than the width of the lock cylinder, and the distance between the paired limiting rear legs is greater than the width of the lock cylinder;

when the lock core further inserts lock core accommodation hole, the spacing preceding foot of lock core butt, spacing slider upwards removes to the joint groove concurrently, and joint piece joint is in the joint groove.

Furthermore, the limiting rear foot is longer than the limiting front foot;

when the lock cylinder is inserted into the lock cylinder accommodating hole, the handle end close to the lock cylinder end is abutted against the door plate end close to the limiting slide block, the limiting slide block is lifted, the lock cylinder end is continuously moved to the end limiting groove and is positioned below the limiting slide block, and at the moment, the limiting slide block falls and is embedded into the end limiting groove;

when the lock cylinder is further inserted into the lock cylinder accommodating hole, the lock cylinder end abuts against the back of the door plate close to the limiting slide block, the lock cylinder abuts against the front limiting foot, the limiting slide block is sequentially lifted and moved to the clamping block to be clamped in the clamping groove, at the moment, the limiting rear foot is erected between the limiting front groove and the limiting rear groove, the limiting slide block exits from the end limiting groove, and the lock cylinder can be pulled out of the lock cylinder accommodating hole.

Furthermore, a first downward inclined surface is arranged at the bottom of the limiting sliding block, and a second upward inclined surface is arranged at one end, close to the handle, of the lock cylinder end headrest;

when the lock cylinder is inserted into the lock cylinder accommodating hole, the first inclined surface is attached to the second inclined surface, and the limiting sliding block is lifted by the end head of the lock cylinder.

Furthermore, the side surface of the end limiting groove close to the door plate is an upward third inclined surface, and the third inclined surface extends to the lock cylinder from the bottom of the end limiting groove;

when the lock cylinder is further inserted into the lock cylinder accommodating hole, the first inclined plane is attached to the third inclined plane, and the limiting sliding block is lifted by the lock cylinder end head.

Furthermore, the end of the lock cylinder and the lock cylinder jointly form a right-angle groove, the cross section of the right-angle groove is in a semi-U shape, and one side of the right-angle groove, which is close to the door plate, is an arc surface;

when the lock core further inserts lock core accommodation hole, spacing preceding foot of cambered surface butt, spacing slider is further lifted and moves to the joint groove, joint piece joint is in the joint groove and spacing back foot stands between spacing preceding groove and spacing back groove.

The second purpose of the invention is realized by adopting the following technical scheme:

an anti-theft lock comprises the handle nozzle, a handle and a lock body, wherein the handle comprises a nozzle body accommodating hole for accommodating a nozzle body, a boss is further sleeved with a return spring, one end, close to a door plate, of the return spring is inserted into the boss to form a driving lever, and one end, close to the handle, of the return spring is used for abutting against the handle;

when the lock cylinder is inserted into the lock cylinder accommodating hole, the deflector rod is abutted against one end of the lock cylinder close to the handle; when the lock cylinder exits from the lock cylinder accommodating hole, the reset spring resets and the deflector rod pulls the limiting front foot to one side of the door plate, the clamping block exits from the clamping groove, the limiting front foot is accommodated in the limiting front groove, and the limiting rear foot is accommodated in the limiting rear groove.

Further, the nozzle body containing hole is arranged to drive the nozzle body to rotate when the handle rotates, and the limiting sliding block is also provided with a limiting spring;

when the nozzle body is inserted into the nozzle body accommodating hole, one end of the limiting spring is abutted against the inner wall of the nozzle body accommodating hole, and the other end of the limiting spring is abutted against the limiting sliding block.

Furthermore, the nozzle body and the boss are both hollow, a first limiting hole with an opening facing the handle is formed in the boss, a first fixing bolt hole is further formed in the nozzle body accommodating hole, and the opening of the first fixing bolt hole faces the first limiting hole.

Furthermore, a second limiting hole is formed in the nozzle body, the second limiting hole is parallel to the tail end of the handle, a second fixing bolt hole is further formed in the nozzle body accommodating hole, and an opening of the second fixing bolt hole faces the second limiting hole.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the handle mouth, when the lock cylinder is inserted into the lock cylinder accommodating hole, the limiting front foot is accommodated in the limiting front groove, the limiting rear foot is accommodated in the limiting rear groove, the limiting sliding block is embedded into the end limiting groove, and the lock cylinder end cannot be pulled out of the lock cylinder accommodating hole, so that direct connection between the lock cylinder and the handle mouth is realized, and the lock cylinder cannot be pulled out of the handle mouth directly. When the lock core further inserts lock core accommodation hole, the joint piece joint in the joint groove and spacing back foot stand between spacing front slot and spacing back groove, spacing slider withdraws from the end spacing groove, from this, lock core accommodation hole can directly be extracted out to the lock core. The handle is directly connected with the lock cylinder through the handle nozzle, the bolt cannot be exposed outside the door plate, the anti-theft capacity of the anti-theft lock comprising the handle nozzle is improved, meanwhile, the structures of the handle, the handle nozzle, the lock cylinder and the like exposed outside the door plate are effectively protected, and the installation is convenient and rapid.

(2) When the lock cylinder is inserted into the lock cylinder accommodating hole, the limiting sliding block is embedded into the end limiting groove, and the lock cylinder cannot be directly pulled out of the handle nozzle; when the lock core is further inserted into the lock core containing hole, the lock core can be directly pulled out of the lock core containing hole; when the lock cylinder exits from the lock cylinder accommodating hole, the reset spring resets and the deflector rod stirs the limiting front foot to one side of the door plate, the clamping block exits from the clamping groove, the limiting front foot is accommodated in the limiting front groove, the limiting rear foot is accommodated in the limiting rear groove, and the limiting sliding block is restored to a state when the lock cylinder is not inserted, so that the handle mouth and the lock cylinder can be fixedly connected for the next time. The anti-theft lock is exquisite in design, the handle mouth and the lock cylinder can be disconnected only by further inserting the lock cylinder into the lock cylinder accommodating hole, and the installation process is convenient. When the handle mouth and the handle are fixed outside the door, the lock cylinder cannot be further inserted into the lock cylinder accommodating hole, so that the connection between the lock cylinder and the handle mouth cannot be damaged, and the anti-theft function of the anti-theft lock is improved.

Drawings

FIG. 1 is an exploded view of an anti-theft lock in accordance with one embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the limiting slider shown in FIG. 1 (the left and right are different viewing angles);

FIG. 3 is a schematic view of the nozzle body shown in FIG. 1 (with different viewing angles on the left and right);

FIG. 4 is a schematic view of the assembly of the limiting slide block and the nozzle body;

FIG. 5 is an assembly schematic view of a limiting slide block, a nozzle body and a lock cylinder;

FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken along A-A of FIG. 5 (with the lock cylinder not shown);

FIG. 8 is an assembly schematic view of a limiting slide block, a nozzle body and a lock cylinder;

FIG. 9 is a cross-sectional view taken along B-B of FIG. 8 (with the lock cylinder not shown);

FIG. 10 is a schematic view of the lock cylinder;

FIG. 11 is a schematic view of the structure of the handle;

FIG. 12 is a cross-sectional view of a limiting slide, a nozzle body and a lock cylinder;

FIG. 13 is a perspective view of a stop block, a nozzle body and a lock cylinder;

FIG. 14 is a perspective view of a stop block, a nozzle body and a lock cylinder;

FIG. 15 is a perspective view of a stop block, a nozzle body and a lock cylinder;

fig. 16 is a perspective view of a stop block, a nozzle body, and a lock cylinder.

In the figure: 1. a mouth body; 11. a boss; 111. a first limit hole; 12. a lock cylinder receiving hole; 13. a limiting chute; 131. a front limiting groove; 132. a limiting rear groove; 133. a clamping groove; 14. a second limiting hole; 2. a limiting slide block; 21. limiting the front foot; 22. limiting the rear leg; 23. a clamping block; 24. a first inclined plane; 3. a lock cylinder; 31. a lock core end socket; 311. an end limiting groove; 312. a second inclined plane; 313. a third inclined plane; 32. a right-angled groove; 321. a cambered surface; 4. a handle; 41. a mouth-containing aperture; 42. a first anchor bolt hole; 43. a second anchor bolt hole; 5. a return spring; 51. a deflector rod; 6. and a limiting spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the present invention, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict.

Fig. 1 shows an anti-theft lock according to the present invention. The anti-theft lock comprises a handle mouth, a lock cylinder 3 (a lock body structure sleeved on the lock cylinder 3 is not shown) and a handle 4. The handle nozzle comprises a nozzle body 1 and a limiting slide block 2, wherein a boss 11 used for being connected with a handle 4 is arranged at the left end of the nozzle body 1, a lock cylinder accommodating hole 12 is formed in the right end of the nozzle body 1, and a limiting slide groove 13 used for accommodating the limiting slide block 2 is further formed in the nozzle body 1. Correspondingly, as shown in fig. 2, the bottom of the limiting slider 2 is provided with two limiting front legs 21 and two limiting rear legs 22, the two limiting front legs 21 and the two limiting rear legs 22 are symmetrically arranged on the front side and the rear side of the limiting slider 2, and the two limiting rear legs 22 are symmetrically arranged on the front side and the rear side of the limiting slider 2. As shown in fig. 3, the limiting sliding groove 13 includes two limiting front grooves 131 and two limiting rear grooves 132, the two limiting front grooves 131 are symmetrically disposed on the front and rear sides of the limiting sliding groove 13, the two limiting rear grooves 132 include two limiting rear grooves 132, and the two limiting rear grooves 132 are symmetrically disposed on the front and rear sides of the limiting sliding groove 13. As shown in fig. 2-3, the right end of the limiting slider 2 (i.e. the end of the limiting slider 2 close to the handle 4 when assembling the anti-theft lock) is further provided with a clamping block 23, and correspondingly, the mouth 1 is further provided with a clamping groove 133 matching with the clamping block 23.

As shown in fig. 4, when assembling the handle nozzle and the lock cylinder 3, the limit slider 2 is first placed in the limit sliding slot 13, and at this time, the limit front leg 21 is received in the limit front slot 131, and the limit rear leg 22 is received in the limit rear slot 132, thereby completing the assembly process of the limit slider 2 and the nozzle body 1. As shown in fig. 5-7, the lock core 3 is inserted into the lock core receiving hole 12, the front limiting leg 21 is received in the front limiting groove 131, the rear limiting leg 22 is received in the rear limiting groove 132, the limiting slide block 2 is inserted into the end limiting groove 311, and the lock core 3 is clamped by the limiting slide block 2 and cannot be pulled out of the lock core receiving hole 12. As shown in fig. 8-9, when the lock cylinder 3 is further inserted into the lock cylinder accommodating hole 12 (i.e. the lock cylinder 3 is further inserted into the lock cylinder accommodating hole 12 leftward), the clamping block 23 is clamped in the clamping groove 133, and the limiting rear leg 22 is erected between the limiting front groove 131 and the limiting rear groove 132 (i.e. the limiting rear leg 22 is erected on a platform between the limiting front groove 131 and the limiting rear groove 132), so that the whole limiting slider 2 is supported from the left and right ends of the limiting slider 2 by the clamping block 23 and the limiting rear leg 22, and the limiting slider 2 is ensured to be in a stable state. At this time, the limit slider 2 exits the end limit groove 311, and the key cylinder 3 can be freely pulled out of the key cylinder accommodating hole 12.

When the handle nozzle is installed, the nozzle body 1 can be inserted into the handle 4 through the boss 11, so that the handle 4 is fixedly connected with the nozzle body 1, and the handle 4 comprising the handle nozzle is formed. Then, the handle 4 is sleeved on the lock cylinder 3 from one side of the door through the handle mouth, when the handle 4 and the handle mouth touch the panel on the outer side of the door, the limiting slide block 2 is embedded into the end limiting groove 311, and the lock cylinder 3 is clamped by the limiting slide block 2 and cannot be pulled out of the lock cylinder accommodating hole 12. At this time, since the handle and the handle mouth on the outer side of the door cannot be continuously pushed to the inner side of the door, and the handle mouth cannot be directly pulled out of the lock cylinder 3, the handle 4 and the handle mouth on the outer side of the door are fixed on the door panel, and bolts and the like are not needed, so that the anti-theft function of the anti-theft lock comprising the handle mouth is enhanced, and the structures such as the handle 4, the lock cylinder 3, the panel and the like on the outer side of the door panel can be well protected. When the handle and the handle mouth outside the door need to be dismantled, the handle and other structures on the inner side of the door can be dismantled firstly, the lock cylinder 3 is exposed, the handle 4 and the handle mouth outside the door are propped against, the lock cylinder 3 is pushed to the outer side, the lock cylinder 3 is further inserted into the lock cylinder accommodating hole 12, at the moment, the limiting slide block 2 is withdrawn from the end limiting groove 311, the lock cylinder 3 can be pulled out of the lock cylinder accommodating hole 12, the process of dismantling the handle 4 and the handle mouth from the outside is completed, and the process of installation and dismantling is convenient.

As a preferred embodiment, as shown in fig. 10, the handle nozzle further includes a lock cylinder 3, a lock cylinder head 31 is disposed at the left end of the lock cylinder 3, the lock cylinder head 31 is disposed on the lock cylinder 3, and the left end of the lock cylinder head 31 is flush with the left end of the lock cylinder 3. The lock core end 31 is provided with an end limiting groove 311, the distance between the pair of limiting front feet 21 is larger than the width of the end limiting groove 311 and smaller than the width of the lock core 3, namely the distance between the front and rear limiting front feet 21 is larger than the front and rear width of the end limiting groove 311 but smaller than the front and rear width of the lock core 3 arranged below the lock core end 31, and meanwhile, the distance between the front and rear limiting rear feet 22 is larger than the front and rear width of the lock core 3. From this, lock core end 31 can freely slide between two spacing preceding feet 21 and between two spacing back feet 22, and lock core 3 can only freely slide between two spacing back feet 22, when lock core 3 inserts further and inserts lock core accommodation hole 12, two spacing preceding feet 21 of lock core 3 butt, further with spacing slider 2 lifting, simultaneously, make spacing slider 2 move forward to joint piece 23 joint in joint groove 133, this moment, spacing preceding feet 21's bottom is located on lock core 3, therefore, the restriction of the not restricted position slider 2 of left and right slip lock core 3, can directly extract lock core 3.

In a preferred embodiment, the restraining heel 22 is longer than the restraining forefoot 21.

In a preferred embodiment, the bottom of the position-limiting slider 2 is provided with a first downward inclined surface 24 at the end close to the lock cylinder 3, and the lock cylinder head 31 is provided with a second upward inclined surface 312 at the end close to the handle 4.

In a preferred embodiment, the side surface of the end limiting groove 311 close to the door panel is an upward third inclined surface 313, and the third inclined surface 313 extends from the bottom of the end limiting groove 311 to the lock cylinder 3.

In a preferred embodiment, the key cylinder head 31 and the key cylinder 3 together form a right-angle groove 32, the cross section of the right-angle groove 32 is half U-shaped, and one side (right end) of the right-angle groove 32 close to the door panel is an arc 321.

In a preferred embodiment, the handle 4 includes a nozzle body accommodating hole 41 for accommodating the nozzle body 1, the boss 11 is further sleeved with a return spring 5, one end of the return spring 5 close to the door panel is inserted into the boss 11 to form a shift lever 51, and one end of the return spring 5 close to the handle 4 is used for abutting against the handle 4.

In a preferred embodiment, as shown in fig. 11, the nozzle body receiving hole 41 is configured to drive the nozzle body 1 to rotate when the handle 4 is rotated, and the limit slider 2 is further provided with a limit spring 6. In this embodiment, the top of the nozzle body accommodating hole 41 is configured to be planar, and correspondingly, the top of the nozzle body 1 is configured to be planar, when the nozzle body 1 is inserted into the nozzle body accommodating hole 41, since the nozzle body 1 cannot rotate relative to the nozzle body accommodating hole 41, when the handle 4 is rotated, the nozzle body 1 is driven to rotate, and further, the lock cylinder 3 inserted into the lock cylinder accommodating hole 12 is driven to rotate. Be provided with the round hole on the spacing slider 2, spacing spring 6 inserts and is used for butt spacing slider 2 in this round hole, and the corresponding spacing slide that is used for holding spacing spring 6 that is equipped with in the mouth body appearance hole 41, when inserting the mouth body 1 in mouth body appearance hole 41, spacing spring 6 is along the spacing slide gliding in mouth body appearance hole 41, the upper end butt spacing slide's of spacing spring 6 inner wall this moment, spacing spring 6's lower extreme butt spacing slider 2. Through spacing spring 6 both ends butt spacing slider 2 and mouth body appearance hole 41 respectively, can guarantee that spacing slider 2 is in the vertical direction all the time, prevent that spacing slider 2 from inclining and influence the regulation and control process.

In a preferred embodiment, the nozzle body 1 and the boss 11 are both hollow, the boss 11 is provided with a first stopper hole 111 that opens toward the handle 4, the nozzle body accommodating hole 41 is further provided with a first fixing bolt hole 42, and the first fixing bolt hole 42 opens toward the first stopper hole 111. Therefore, when the anti-theft lock is assembled, a fixing bolt can be inserted into the lock cylinder accommodating hole 12, the fixing bolt penetrates out of the first limiting hole 111 after entering the mouth body 1 and is screwed into the first fixing bolt hole 42, therefore, the handle 4 on the outer side is fixed with the mouth body 1 through the first limiting hole 111 and the first fixing bolt hole 42 arranged in the boss 11, a handle structure containing the mouth body 1 is formed, the handle structure containing the mouth body 1 is sleeved on the lock cylinder 3 on the door plate, and the installation process of the handle 4 on the outer side of the door plate is completed. The bolt is not exposed to the outside, and the bolt cannot be unscrewed from the outside to disassemble the anti-theft lock, so that the anti-theft function of the anti-theft lock is enhanced.

In a preferred embodiment, the mouth 1 is provided with a second stopper hole 14, and the opening direction of the second stopper hole 14 is parallel to the end of the handle 4. The nozzle body accommodating hole 41 is also provided with a second fixing bolt hole 43, and the opening of the second fixing bolt hole 43 faces the second stopper hole 14. Meanwhile, a lock cylinder limiting groove is arranged on the lock cylinder 3 for limiting. After installing handle 4 in the door outside, carry out handle 4 of door inboard again, can cup joint the lock core 3 with the mouth body 1 earlier on, cup joint the lock core 3 with handle 4 again, and at last, insert and pass second spacing hole 14 from the second fixing bolt hole 43 of handle 4 through fixing bolt, fixing bolt's top embedding lock core spacing groove at last, and from this, the door plant is inboard, couple together handle 4, mouth body 1 and lock core 3 fixed connection through fixing bolt, accomplish this pickproof lock's whole installation process.

The assembly and operation of the anti-theft lock are as follows (fig. 12-15 hide the return spring 5 for easy viewing):

in a first step, the lock body, the lock cylinder 3 and the face plate are mounted to the door panel.

In the second step, the position-limiting sliding block 2 is first placed in the position-limiting sliding groove 13, and at this time, the position-limiting front leg 21 is accommodated in the position-limiting front groove 131, and the position-limiting rear leg 22 is accommodated in the position-limiting rear groove 132. And finishing the assembling process of the limiting slide block 2 and the nozzle body 1.

Secondly, as shown in fig. 12, the lock cylinder 3 is inserted into the lock cylinder accommodating hole 12, the second inclined surface 312 of the lock cylinder end 31 abuts against the first inclined surface 24 of the position-limiting slider 2, at this time, the position-limiting slider 2 is lifted, but the height of the position-limiting slider 2 which is lifted is not high enough to enable the clamping block 23 to be clamped in the clamping groove 133.

Thirdly, as shown in fig. 6, as the lock cylinder 3 continues to move to the left, the second inclined surface 312 sequentially penetrates through the gap between the limiting rear leg 22 and the limiting front leg 21 from the right to the left, the limiting front leg 21 is accommodated in the limiting front groove 131, the limiting rear leg 22 is accommodated in the limiting rear groove 132, the limiting slider 2 is embedded in the end limiting groove 311, and the lock cylinder 3 is clamped by the limiting slider 2 and cannot be pulled out of the lock cylinder accommodating hole 12.

Fourthly, as shown in fig. 13, the lock cylinder 3 further moves towards the left end, the third inclined surface 313 of the lock cylinder end 31 abuts against the first inclined surface 24 of the limit slider 2, the limit slider 2 is lifted preliminarily, and when the top of the lock cylinder 3 abuts against the bottom of the limit slider 2, the limit slider 2 is lifted at the highest point, and at the moment, the height of the limit slider 2 which is lifted is still insufficient to enable the clamping block 23 to be clamped in the clamping groove 133.

Fifthly, as shown in fig. 14 to 15, as the lock cylinder 3 continues to move to the left end, the arc surface 321 of the right-angle groove 32 abuts against the front limiting leg 21, the limiting slider 2 is further lifted to be equal to the height of the clamping groove 133, at this time, the limiting slider 2 moves (moves forwards) to one side of the handle 4, the clamping block 23 is clamped in the clamping groove 133, and meanwhile, the lifted limiting rear leg 22 stands between the front limiting groove 131 and the rear limiting groove 132. At this time, the left end of the key cylinder 3 abuts against the shift lever 51 of the return spring 5, and the return spring 5 at this time is in a normal state.

Sixth, as shown in fig. 16, the return spring 5 is compressed. When the key cylinder 3 moves to the right, the return spring 5 is returned and moves to the right. When the left end of the lock core 3 retreats to the right side of the front limit foot 21, the return spring 5 moves to the right by virtue of the return elasticity and pulls the front limit foot 21 to the right through the shift lever 51, and the slide block 2 returns to the second step, that is, the front limit foot 21 is accommodated in the front limit groove 131, and the rear limit foot 22 is accommodated in the rear limit groove 132. At this time, the end limiting groove 311 has moved rightwards until the limiting rear leg 22 is located at the left side of the limiting rear groove 132, i.e. the limiting slide block 2 cannot be inserted into the end limiting groove 311, and the lock cylinder 3 can be freely pulled out of the lock cylinder accommodating hole 12.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A handle mouth is characterized by comprising a mouth body and a limiting slide block, wherein one end of the mouth body is provided with a boss used for connecting a handle, the other end of the mouth body is provided with a lock cylinder accommodating hole used for sleeving a lock cylinder, and the mouth body is also provided with a limiting slide groove used for accommodating the limiting slide block;

the bottom of the limiting slide block is provided with a pair of limiting front foot and a limiting rear foot, and one end of the limiting slide block, which is close to the handle, is also provided with a clamping block; the limiting sliding groove comprises a limiting front groove and a limiting rear groove which are arranged in pair, the limiting front groove is used for containing the limiting front foot, the limiting rear groove is used for containing the limiting rear foot, and a clamping groove is further formed in the nozzle body;

when the lock cylinder is inserted into the lock cylinder accommodating hole, the limiting front pin is accommodated in the limiting front groove, the limiting rear pin is accommodated in the limiting rear groove, the limiting sliding block is embedded into the end limiting groove, and the lock cylinder cannot be pulled out of the lock cylinder accommodating hole; when the lock cylinder is further inserted into the lock cylinder accommodating hole, the clamping block is clamped in the clamping groove, the limiting rear foot is erected between the limiting front groove and the limiting rear groove, the limiting sliding block exits from the end limiting groove, and the lock cylinder can be pulled out of the lock cylinder accommodating hole;

the handle mouth further comprises a lock cylinder, a lock cylinder end is arranged at one end of the lock cylinder, an end limiting groove is formed in the lock cylinder end, the distance between the paired limiting front legs is larger than the width of the end limiting groove and smaller than the width of the lock cylinder, and the distance between the paired limiting rear legs is larger than the width of the lock cylinder;

when the lock core further inserts lock core accommodation hole, the spacing front foot of lock core butt, spacing slider upwards removes to the joint groove concurrently, and joint piece joint is in the joint groove.

2. The handle mouth of claim 1, wherein said spacing rear foot is longer than said spacing front foot;

when the lock cylinder is further inserted into the lock cylinder accommodating hole, the end head of the lock cylinder abuts against the rear end, close to the door plate, of the limiting slide block, the lock cylinder abuts against the front limiting foot, the limiting slide block is lifted in sequence and moves to the clamping block to be clamped in the clamping groove, at the moment, the limiting rear foot is erected between the front limiting groove and the rear limiting groove, the limiting slide block exits from the end limiting groove, and the lock cylinder accommodating hole can be extracted from the lock cylinder.

3. The handle mouth as claimed in claim 2, wherein the bottom of the limit slider is provided with a first downward inclined surface, and the end of the lock cylinder end close to the handle is provided with a second upward inclined surface;

when the lock cylinder is inserted into the lock cylinder accommodating hole, the first inclined surface is attached to the second inclined surface, and the limiting sliding block is lifted by the lock cylinder end.

4. The handle mouth as claimed in claim 3, wherein the side of the end limiting groove close to the door plate is an upward third inclined surface and the third inclined surface extends from the bottom of the end limiting groove to the lock cylinder;

5. The handle mouth as claimed in claim 4, wherein the lock core end and the lock core together form a right-angle groove, the cross section of the right-angle groove is in a half U shape, and one side of the right-angle groove, which is close to the door plate, is an arc surface;

6. An anti-theft lock, characterized by comprising the handle mouth of any one of claims 1-5, further comprising a handle and a lock body, wherein the handle comprises a mouth body accommodating hole for accommodating the mouth body, the boss is further sleeved with a return spring, one end of the return spring, which is close to the door plate, is inserted into the boss to form a deflector rod, and one end of the return spring, which is close to the handle, is used for abutting against the handle;

7. The anti-theft lock according to claim 6, wherein said nozzle receiving bore is configured to drive rotation of the nozzle when the handle is rotated, said limit slider further having a limit spring disposed thereon;

8. The anti-theft lock according to claim 7, wherein the mouth and the boss are hollow, and the boss is provided with a first limiting hole with an opening facing the handle, and the mouth receiving hole is further provided with a first fixing bolt hole with an opening facing the first limiting hole.

9. The anti-theft lock according to claim 8, wherein a second limiting hole is formed in the nozzle body, the second limiting hole is parallel to the handle end, a second fixing bolt hole is further formed in the nozzle body accommodating hole, and the opening of the second fixing bolt hole faces the second limiting hole.