CN115162856B

CN115162856B - Lock set

Info

Publication number: CN115162856B
Application number: CN202210626410.1A
Authority: CN
Inventors: 张凯凯; 熊伟; 林泽财; 李旭
Original assignee: Lumi United Technology Co Ltd
Current assignee: Lumi United Technology Co Ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2024-04-02
Anticipated expiration: 2042-06-02
Also published as: CN115162856A

Abstract

The application provides a tool to lock, include: the device comprises a shell, a lock tongue, a shifting block and a driving piece. The shell comprises a guide plate and a bottom plate, wherein the guide plate and the bottom plate enclose a containing cavity, and the guide plate is provided with a lock hole; the lock tongue is arranged along the axis of the lock hole and selectively extends out of the lock hole or retracts into the accommodating cavity, and a sliding surface and a step surface opposite to the guide plate are arranged on the lock tongue; the shifting block is arranged on the bottom shell and selectively abuts against the sliding surface or the step surface; the driving piece is in transmission connection with the shifting block; when the lock tongue is retracted into the accommodating cavity, the shifting block slides to the step surface along the sliding surface so as to limit the lock tongue to extend out of the lock hole, and when the lock tongue extends out of the lock hole, the driving piece drives the shifting block so that the shifting block is separated from the step surface and slides along the sliding surface. The tool to lock that this embodiment provided, last contact between plectrum and the spring bolt to restriction spring bolt is in rocking rather than flexible direction looks vertically ascending, guarantees that the spring bolt can steadily stretch out, and the spring bolt just is difficult to collide with between the inside spare part of tool to lock like this, and then has reduced the noise that the spring bolt produced in the motion process.

Description

Lock set

Technical Field

The application relates to the technical field of locks, in particular to a lock.

Background

In the existing mechanical lock body or self-elastic lock body, the power for ejecting the main lock tongue is provided by a spring, when the main lock tongue ejects, larger speed can be obtained in a short time, and the locking time is shortened.

Disclosure of Invention

The embodiment of the application provides a lockset so as to improve the technical problems.

The application provides a tool to lock, include: the device comprises a shell, a lock tongue, a shifting block and a driving piece. The shell comprises a guide plate and a bottom plate, wherein the guide plate and the bottom plate enclose a containing cavity, and the guide plate is provided with a lock hole; the lock tongue is arranged along the axis of the lock hole and selectively extends out of the lock hole or retracts into the accommodating cavity, a sliding surface and a step surface opposite to the guide plate are arranged on the lock tongue, and the sliding surface is connected with the step surface and bends relative to the step surface; the shifting block is arranged on the bottom shell and selectively abuts against the sliding surface or the step surface; the driving piece is in transmission connection with the shifting block and is used for driving the shifting block; when the lock tongue is retracted into the accommodating cavity, the shifting block slides to the step surface along the sliding surface so as to limit the lock tongue to extend out of the lock hole, and when the lock tongue extends out of the lock hole, the driving piece drives the shifting block so that the shifting block is separated from the step surface and slides along the sliding surface.

In some embodiments, the shifting block includes a rolling element and a rotating element, the rotating element is rotatably disposed on the bottom plate, the driving element is used for driving the rotating element to rotate, an inner ring of the rolling element is disposed on the rotating element, and an outer ring of the rolling element selectively abuts against the step surface or the sliding surface.

In some embodiments, the rolling element maintains hard contact with the locking bolt as the outer race of the rolling element slides along the sliding surface.

In some embodiments, the sliding surface includes opposite first and second ends, the first end abutting the step surface, the second end being provided with a reduction mechanism to reduce the speed of the dial.

In some embodiments, the reduction mechanism includes an arcuate surface formed at the second end.

In some embodiments, the lock further includes a first reset member disposed on the bottom case and in driving connection with the latch, the first reset member being configured to provide a reset force to the latch to extend the latch out of the lock hole.

In some embodiments, the sliding surface is angled with respect to the axial direction of the locking aperture.

In some embodiments, the driving member includes a push rod and a driving portion, the push rod is slidably disposed on the bottom shell, one end of the push rod is in transmission connection with the dial block, and the driving portion is disposed on the bottom shell and is used for driving the push rod to slide so as to drive the dial block in the sliding process.

In some embodiments, the latch comprises a tongue body and a clamping piece, the clamping piece is arranged on the tongue body, and the sliding surface and the step surface are arranged on the clamping piece.

In some embodiments, the driving portion further includes a second reset element for driving the push rod to reset.

The tool to lock that this application embodiment provided, when the spring bolt was retrieved to holding the intracavity, can butt step face through the shifting block to this limits the extension of hosting the spring bolt. When the lock is locked by extending the lock tongue, the driving device can drive the shifting block to move, the shifting block can be separated from the step surface and slide along the sliding surface, and the shifting block is continuously contacted with the lock tongue in the sliding process, so that the lock tongue is limited to shake in the direction perpendicular to the extending direction of the lock tongue, the lock tongue is ensured to extend stably, and the lock tongue is not easy to collide with parts inside the lock, so that noise generated by the lock tongue in the moving process is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of the structure of the lock provided herein;

fig. 2 is a schematic view of a structure of a first direction of a lock tongue in the lock provided in the present application;

fig. 3 is a schematic view of a structure of a second direction of a lock tongue in the lock provided in the present application;

FIG. 4 is a schematic view of a first state of the lock when the lock tongue is transparent;

FIG. 5 is a schematic view of a fifth state of the lock when the lock tongue is transparent;

FIG. 6 is a schematic diagram of the forces exerted by the dial block in the lock of the present application when in contact with the sliding surface;

FIG. 7 is a schematic diagram of the structure of a dial in the lock provided by the present application;

fig. 8 is a schematic structural diagram of a driving member in the lock provided in the present application.

Detailed Description

In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which are within the scope of the protection of the present application, will be within the skill of the art without undue effort.

In this application, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise specifically indicated or defined. For example, the connection can be fixed connection, detachable connection or integral connection; can be mechanically or electrically connected; the connection may be direct, indirect, or internal, or may be surface contact only, or may be surface contact via an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for understanding as a specific or particular structure. The description of the terms "some embodiments," "other embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this application, the schematic representations of the above terms are not necessarily for the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described herein, as well as features of various embodiments or examples, may be combined and combined by those skilled in the art without conflict.

Along with the high-speed development of the intelligent home industry, the intelligent door lock is used as an intelligent product at the home terminal and plays an important role in the linkage effect of the intelligent home. With the development of the intelligent door lock industry, the characteristic requirements of users on the lock body are increasingly improved, the power of the self-locking lock body mostly depends on a mechanical structure to eject the lock tongue, the driving piece is mainly used for controlling the ejection of the lock tongue, and the lock tongue is not driven by power to move, so that the power consumption of the lock can be well controlled, and the lock is an ideal scheme of a long-endurance lock. In the process of using the lock, noise generated by the lock body is also a key factor of direct relation user experience, and the noise generated by impact in the lock body needs to be reduced as much as possible while the locking speed of the lock body is ensured.

In the prior art, the main bolt can reduce the speed of the bolt by utilizing a limiting mechanism or collision between the main bolt and a door frame, but the problem of overlarge noise possibly exists during collision. Accordingly, the present application provides a lock for alleviating the above-mentioned problems.

The present application provides a lock 1, please refer to fig. 1, including a housing 10, a lock tongue 20, a shifting block 30 and a driving member 40. The housing 10 is provided with a lock hole 111 and a receiving chamber 13 communicating with the lock hole 111. The locking tongue 20 is disposed along the axis of the locking hole 111 and selectively extends out of the locking hole 111 or retracts into the receiving chamber 13. The shifting block 30 is disposed on the bottom shell 12 and is in driving connection with the tongue 20. The driving member 40 is in driving connection with the shift block 30 and is used for driving the shift block 30. In some embodiments, the lock 1 may further comprise a turning tongue (not shown) for temporarily locking the lock 1.

The housing 10 is used to carry the lock 1. The housing 10 includes a bottom case 12 and a guide plate 11, the guide plate 11 is disposed at an edge of the bottom case 12 and encloses a receiving chamber 13 with the bottom case 12, and the guide plate 11 is provided with a lock hole 111. Specifically, the guide plate 11 is mounted on one side edge of the bottom shell 12, and is used for being opposite to the door frame when being mounted, other edges of the bottom shell 12 are bent, so that the bottom shell 12 and the guide plate 11 enclose a containing cavity 13, the lock tongue 20 is located in the containing cavity 13, and the lock hole 111 penetrates through the guide plate 11, so that the lock hole 111 is communicated with the containing cavity 13.

Locking or unlocking of the lock 1 can be achieved by extending the locking tongue 20 out of the locking hole 111 or retracting the receiving cavity 13. For example, referring to fig. 2, the locking bolt 20 may be integrally formed of a single piece of metal material, so that the locking bolt 20 has high mechanical strength and is not easily broken. In some embodiments, the lock tongue 20 may include a plurality of lock heads 21, and the lock hole 111 may also be provided with a plurality of lock heads 21, and is disposed in a one-to-one correspondence with the plurality of lock heads 21, and the plurality of lock heads 21 extend out at the same time, so that the lock tongue 20 can bear a large impact. The locking head 21 may be a separately manufactured part and may be provided by means of bolting etc. which facilitates manufacturing during production.

In the present embodiment, the tongue 20 is provided with a stepped surface 221 facing the guide plate 11. The step surface 221 is used to abut against the dial block 30 to limit the extension of the lock tongue 20 along the lock hole 111. In some embodiments, referring to fig. 2 and 3, the latch tongue 20 may include a latch 22 and a tongue body 23, the latch 22 is disposed on the tongue body 23, and the step surface 221 is disposed on the latch 22. Illustratively, the clamping member 22 may be a substantially plate-shaped member that is attached to a surface of the tongue 23 at a portion thereof located in the receiving chamber 13. The clamping piece 22 has a certain thickness, so that when the clamping piece 22 is attached to the tongue 23, the clamping piece can be raised relative to the surface of the tongue 23. The step surface 221 is formed on a portion of the clip 22 perpendicular to the surface of the tongue 23. In addition, the step surface 221 is disposed substantially opposite to the guide plate 11, referring to fig. 4, when the locking bolt 20 is retracted into the accommodating cavity 13 and is driven by the driving force for driving the locking bolt 20 to extend out of the locking hole 111, the locking bolt 20 can be limited to move towards the locking hole direction by abutting the dial block 30 against the step surface 221. In some embodiments, the step surface 221 is parallel to the guide plate 11, and the extension direction of the locking bolt 20 is perpendicular to the guide plate, so that when the dial 30 abuts against the step surface 221, the locking bolt can be well restricted from extending out of the locking hole 111.

Because the clamping piece 22 and the tongue body 23 are fixedly connected in a separable mode, such as a bolt, when the lock tongue 20 is processed, the clamping piece 22 and the tongue body 23 can be processed respectively, so that the processing difficulty is low, and the production cost can be reduced. In other embodiments, the fastening member 22 and the tongue 23 may be integrally formed, which is not limited herein.

Referring again to fig. 3, the latch tongue 20 is further provided with a sliding surface 222, and the sliding surface 222 is also used for driving connection with the dial 30. In some embodiments, the sliding surface 222 may also be disposed on the clip 22. The dial 30 can slide along the sliding surface 222 when the locking bolt 20 extends along the locking hole 111, so that noise generated during the movement of the locking bolt 20 can be reduced. For example, referring to fig. 5 and 6, in some embodiments, the sliding surface 222 may have a certain angle α with respect to the axial direction of the lock hole 111, and the dial 30 may abut against the sliding surface 222 under a certain driving force. As the locking bolt 20 moves gradually in the axial direction of the locking hole 111 (as shown in the X direction in fig. 5), the dial 30 also moves in a direction substantially perpendicular to the axial direction of the locking hole 111 (as shown in the Y direction in fig. 5), and a component force F1 opposite to the moving direction of the locking bolt 20 is applied to the locking bolt 20 through the sliding surface 222, and as the extension length of the locking bolt 20 increases, the speed of extension of the locking bolt 20 gradually slows down under the pushing of the component force F1. Therefore, when the bolt 20 extends to the maximum length, the moving speed of the bolt 20 is also reduced to zero, meanwhile, as the shifting block 30 is abutted against the bolt 20, a component force F2 approximately perpendicular to the axial direction of the lock hole 111 can be applied to the bolt 20, so that a certain guiding effect is also achieved on the bolt 20, the bolt 20 is prevented from shaking in the Y direction in fig. 5 to a certain extent, the bolt 20 is not easy to collide with parts of the lockset 1, such as a shell 10 and the like, in the moving process, and noise generated in the moving process of the bolt 20 is further reduced. In other embodiments, the sliding surface 222 may be parallel to the axial direction of the lock hole 111, and when the dial block 30 abuts against the sliding surface 222, the self gravity may be used to press the lock tongue 20, so as to avoid shaking of the lock tongue 20 in the Y direction in fig. 5, and further reduce noise generated during the movement of the lock tongue 20.

In some embodiments, the locking bolt may also be decelerated by providing a deceleration mechanism 2221. For example, referring to fig. 3 again, the sliding surface 222 includes a first end and a second end opposite to each other, the first end abuts against the step surface 221, the second end is provided with a reduction mechanism 2221, and when the locking bolt 20 extends along the locking hole 111, the dial 30 gradually slides from the first end to the second end and is in driving connection with the reduction mechanism 2221 to reduce the extending process of the locking bolt 20. In some embodiments, the reduction mechanism 2221 includes an arcuate surface 2222 formed at the second end. Illustratively, the arcuate surface 2222 may be formed with the sliding surface 222 extending from a first end to a second end, with the dial 30 sliding against the arcuate surface 2222 and sliding along the arcuate surface 2222. As the dial 30 continues to slide along the arc surface 2222, the force of the dial 30 on the lock tongue 20 in the axial direction of the lock tongue 20 is rapidly increased compared with the force of the dial 30 sliding along the sliding surface 222, so that the extension of the lock tongue 20 is rapidly decelerated, so that the lock tongue 20 can have a relatively high speed immediately after being ejected (i.e. before the lock tongue 20 reaches the second end), the locking time is shortened, and when the lock tongue 20 moves to the end of the stroke (i.e. when the dial 30 contacts the second end), the dial 30 has a smooth deceleration function on the lock tongue 20, the momentum of the lock tongue 20 in the final extension position is reduced, and the impact between the lock tongue 20 and other parts (such as a guide plate or a door frame) is reduced, so that noise is reduced.

In other embodiments, the speed reducing mechanism 2221 may also be a buffer member, such as a spring, disposed at the second end, where the dial 30 abuts against the buffer member when the dial 30 slides to the second end, so as to achieve the function of reducing the speed of the extension of the lock tongue 20. The cushioning member may be a rubber pad provided at the second end, and the like, and is not limited thereto.

Since the locking bolt 20 is required to selectively extend out of the locking hole 111 or retract into the receiving cavity 13, the dial 30 is driven by the driving member 40 so that the dial 30 selectively abuts against the sliding surface 222 or the stepped surface 221. In this embodiment, the sliding surface 222 may be connected to the step surface 221 and bent with respect to the step surface 221, so that the dial 30 can slide along the sliding surface 222 to the step surface 221, and the sliding surface 222 has a certain angle with respect to the axial direction of the lock hole 111. When the locking bolt 20 is retracted into the receiving cavity 13, the dial 30 slides along the sliding surface 222 to the step surface 221 to restrict the locking bolt 20 from extending out of the locking hole 111. When the locking bolt 20 extends out of the locking hole 111, the driving member 40 drives the shift block 30 to disengage the shift block 30 from the step surface 221 and slide along the sliding surface 222.

The locking bolt 20 may have a problem of a deviation of a movement direction when it is extended out of the locking hole 111 or retracted into the receiving cavity 13, so that in some embodiments, a guide groove 24 is provided on the locking bolt 20, and a guide post is provided on the housing 10, and the guide post is penetrated through the guide groove 24 to guide the movement of the locking bolt 20. Illustratively, the guide posts may be integrally formed with the bottom shell 12 and disposed within the receiving cavity 13. The guide groove 24 penetrates the locking bolt 20 and is disposed in parallel with the axial direction of the locking hole 111, so that when the locking bolt 20 is extended out of the locking hole 111 or retracted into the accommodating chamber 13, the guide post slides along the guide groove 24 to play a role in guiding the movement of the locking bolt 20.

In order to limit the length of the locking bolt 20 extending out of the locking hole 111 within a certain distance, a limiting portion 25 may be further disposed on the locking bolt 20. The limiting portion 25 may be one end of the guiding slot 24, and when the locking bolt 20 extends out of the locking hole 111 to the longest distance, the guiding column abuts against the limiting portion 25 and limits the locking bolt 20 to extend out of the locking hole 111. In other embodiments, the stopper 25 may be provided on the tongue 23 and may abut against the guide plate 11 when the tongue 23 is extended to the longest length, which is not limited herein. In this embodiment, the limiting portion 25 may also be disposed on the clamping member 22. Illustratively, the guide slot 24 may extend through the latch 22 such that when the locking bolt 20 extends out of the locking hole 111 to the longest distance, the guide post can abut the stop 25 on the latch 22 to limit the length of extension of the locking bolt 20.

Referring to fig. 7, the dial 30 may include a rotating member 31, the rotating member 31 is rotatably disposed on the bottom shell 12, and the driving member 40 is used for driving the rotating member 31 to rotate. The dial 30 may selectively abut against the sliding surface 222 or the stepped surface 221 during rotation. Illustratively, an arc groove 32 may be further provided on the dial 30, and a protrusion may be further provided on the bottom case 12, the protrusion being inserted into the arc groove 32 and sliding along the arc groove 32. In other embodiments, the dial 30 may be disposed on the bottom shell 13 and slide along the bottom shell 13, and the driving member 40 may drive the dial 30 to selectively abut against the sliding surface 222 or the step surface 221 during sliding.

During the process of sliding the dial 30 along the sliding surface 222 to the step surface 221, there may be a problem of large friction force, so that the resistance of the dial 30 during sliding is large. In some embodiments, the dial 30 also includes a rolling member 33. As an embodiment, the rolling member may be a bearing, and in other embodiments, the rolling member 33 may be another structure capable of reducing friction resistance, which is not limited herein. In the present embodiment, the inner ring of the rolling element 33 is provided to the rolling element 31, and the outer ring of the rolling element 33 selectively abuts against the step surface 221 or the sliding surface 222. Illustratively, when the rolling member 33 abuts against the step surface 221, since the step surface 221 is substantially perpendicular to the axial direction of the lock hole 111, when the lock tongue 20 receives an outward force in the direction of the lock hole 111, the rolling member 33 applies a force to the lock tongue 20 perpendicular to the direction of the step surface 221 to restrict the lock tongue 20 from extending out of the lock hole 111.

Illustratively, when the outer ring of the rolling element 33 slides along the sliding surface 222, the outer ring of the rolling element 33 is driven by the driving element 40 to keep in hard contact with the locking bolt 20, that is, the outer ring of the rolling element 33 continuously abuts against the sliding surface 222 on the locking bolt 20, and the rolling element 33 rolls along the sliding surface 222, so that the outer ring of the rolling element 33 selectively abuts against the step surface 221 or the sliding surface 222. In this process, since the outer ring of the rolling member 33 and the inner ring disposed on the rotating member 31 are in rolling friction, the friction force is smaller, the energy consumed in the movement process of the latch 20 is less, and the noise generated by the sliding friction is reduced, compared with the case that the rotating member 31 is directly abutted against the sliding surface 222.

The locking bolt 20 requires a certain driving force to drive the locking bolt 20 to extend out of the locking hole 111. Therefore, in some embodiments, referring to fig. 1 again, the lock 1 further includes a first reset element 50, where the first reset element 50 is disposed on the bottom shell 12 and is in driving connection with the lock tongue 20, and the first reset element 50 is configured to provide a reset force to the lock tongue 20 so that the lock tongue 20 extends out of the lock hole 111. The first restoring member 50 may also be a torsion spring, where a torsion arm of the torsion spring abuts against an end of the locking bolt 20 away from the locking hole 111, and applies a force to the locking bolt 20 toward the locking hole 111, so that the locking bolt 20 can extend out of the locking hole 111. In this embodiment, the tongue 23 may further be provided with an installation groove, and the torsion arm of the torsion spring abuts against the bottom of the installation groove, so that the torsion arm is prevented from being separated from the tongue 23. In other embodiments, the first reset element 50 may be a first spring disposed on the bottom shell 12, and two ends of the first spring are simultaneously abutted against the latch 20 and the bottom shell 12. When the lock tongue 20 is retracted into the accommodating cavity 13, the first spring deforms, and an acting force for driving the lock tongue 20 to extend out of the lock hole 111 can be applied to the lock tongue 20.

The driving member 40 is used to drive the movement of the dial 30. Referring to fig. 8, in some embodiments, the driving member 40 includes a push rod 41 and a driving portion 42, the push rod 41 is slidably disposed on the bottom shell 12, one end of the push rod 41 is in transmission connection with the dial 30, and the driving portion 42 is disposed on the bottom shell 12 and is used for driving the push rod 41 to slide so as to drive the dial 30 to move during sliding. For example, the driving part 42 may be a power device disposed on the bottom case 12, and the power device may be a motor, a cylinder, an electromagnet, or the like, which is not limited herein. The power means may drive the push rod 41 to slide. A connection part may be further provided on the dial 30, and a pushing part 411 is provided on the push rod 41, and the pushing part 411 is embedded into the connection part and pushes the dial 30 to move. This drives the dial 30 to rotate along the bottom case 12 when the push rod 41 slides. In other embodiments, push rod 41 may also be fixedly coupled to dial 30 and push dial 3 to slide on bottom shell 12. In still other embodiments, the push rod 41 and the dial 30 may be hinged together, without limitation.

The driver 40 drives the dial 30 such that the outer ring of the rolling member 33 is held in hard contact with the tongue 20 while sliding along the sliding surface 222 or the stepped surface 221. Since the sliding surface 222 is connected to the step surface 221 and is bent, after the driving member 40 drives the dial 30 to disengage from the step surface 221, a force opposite to the disengaging direction can be applied to the driving member 40, so that the dial 30 can continuously abut against the sliding surface 222 and slide along the sliding surface 222. In some embodiments, the driving part 42 further includes a second reset element 421, and the second reset element 421 is used to drive the push rod 41 to reset. The second restoring member 421 may be a second spring, and one end of the second spring is disposed on the bottom case 12 and the other end of the second spring is disposed on the push rod 41. When the push rod 41 drives the shift block 30 to slide the shift block 30 along the step surface 221 to the sliding surface 222, the spring is deformed and applies a force to the push rod 41 opposite to the movement direction. When the shifting block 30 contacts with the sliding surface 222, the push rod 41 drives the shifting block 30 under the action of the restoring force of the second spring, so that the shifting block 30 abuts against the sliding surface 222. During the process of retracting the lock tongue 20 into the accommodating cavity 13, as the lock tongue 20 gradually retracts, the dial block 30 slides along the sliding surface 222 under the action of the second spring, and returns to be in abutment with the step surface 221. In other embodiments, the driving member 40 may be a driving member 40 that can be driven in two directions, and the push rod 41 can be reset by driving the push rod 41 in opposite directions, so that the same technical effect as when the second reset member 421 is provided can be achieved.

In still other embodiments, the driving member 40 may further include a handle (not shown) that is drivingly coupled to the shift block 30 via a push rod 41 and that is also capable of driving the shift block 30. By turning the handle, the function of separating the dial 30 from the step surface 221 and extending the lock tongue 20 from the lock hole 111 can be also achieved. The handle can also be in transmission connection with the turning tongue and is used for unlocking the temporary locking of the turning tongue to the lockset 1.

The application provides a tool to lock 1 theory of use as follows:

the utility model provides a tool to lock 1 is provided with driving piece 40 on drain pan 12, driving piece 40 butt spring bolt 20 to can drive spring bolt 20 and stretch out along lockhole 111 axis direction. The lock 1 further comprises a shifting block 30, the shifting block 30 can be abutted against a step surface 221 arranged on the lock tongue 20, and the lock tongue 20 can be limited in the accommodating cavity 13 to be unable to extend under the abutting of the shifting block 30 because the step surface 221 is perpendicular to the axis of the lock hole 111. When unlocking is needed, the push rod 41 can be driven to move by the driving piece 40, the push rod 41 can push the shifting block 30 to separate the shifting block 30 from the step surface 221, and the lock tongue 20 can extend out of the accommodating cavity 13. The driving member 40 further includes a second spring, which can pull the push rod 41 to move the push rod 41 in the opposite direction, and in this process, since the rolling member 33 is disposed on the dial block 30, the rolling member 33 can roll along the step surface 221 to the sliding surface 222 connected to the step surface 221, and under the restoring force of the second spring, the rolling member 33 abuts against the sliding surface 222. As the locking bolt 20 moves gradually along the axis of the locking hole 111, the dial 30 also moves in a direction substantially perpendicular to the axis of the locking hole 111, and applies a force to the locking bolt 20 opposite to the direction of movement of the locking bolt 20 through the sliding surface 222, so that the speed of extending the locking bolt 20 is slowed down until abutting against the arc surface 2222 at one end of the sliding surface 222. As the dial 30 continues to slide along the arc surface 2222, the force of the dial 30 on the lock tongue 20 in the axial direction of the lock tongue 20 increases rapidly compared to when the dial 30 slides along the sliding surface 222, thereby decelerating the extension of the lock tongue 20. The application provides a tool to lock 1 when spring bolt 20 withdraws to hold in the chamber 13, can butt step face 221 through the shifting block 30 to limit the extension of spring bolt 20. When the lock tongue 20 is required to be extended to lock the lock 1, the driving device can drive the shifting block 30 to move, the shifting block 30 can be separated from the step surface 221 and slide along the sliding surface 222, and the shifting block 30 generates downward pressure on the lock tongue 20 in the sliding process, so that the lock tongue 20 cannot shake in the up-down direction, and noise generated in the moving process of the lock tongue 20 is reduced.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present application, and are intended to be included within the scope of the present application.

Claims

1. A lock, comprising:

the shell comprises a guide plate and a bottom plate, wherein the guide plate and the bottom plate enclose a containing cavity, and the guide plate is provided with a lock hole;

the lock tongue can selectively extend out of the lock hole or retract into the accommodating cavity, a sliding surface and a step surface opposite to the guide plate are arranged on the lock tongue, and the sliding surface is connected with the step surface and is bent relative to the step surface;

the shifting block is arranged on the bottom plate and selectively abuts against the sliding surface or the step surface; and

the driving piece is in transmission connection with the shifting block and is used for driving the shifting block;

when the lock tongue is retracted into the accommodating cavity, the shifting block reversely slides to the step surface along the sliding surface relative to the lock tongue so as to limit the lock tongue to extend out of the lock hole, and when the lock tongue extends out of the lock hole, the driving piece drives the shifting block so as to enable the shifting block to be separated from the step surface and reversely slide along the sliding surface relative to the lock tongue.

2. The lock according to claim 1, wherein the shifting block comprises a rolling element and a rotating element, the rotating element is rotatably arranged on the bottom plate, the driving element is used for driving the rotating element to rotate, an inner ring of the rolling element is arranged on the rotating element, and an outer ring of the rolling element selectively abuts against the step surface or the sliding surface.

3. The lock according to claim 2, wherein the rolling element is a bearing that maintains hard contact with the locking bolt as an outer race of the bearing slides along the sliding surface.

4. The lock according to claim 1, wherein the sliding surface includes opposite first and second ends, the first end abutting the step surface, the second end being provided with a reduction mechanism to reduce the speed of the dial.

5. The lock of claim 4, wherein the reduction mechanism includes an arcuate surface formed at the second end.

6. The lock of claim 1, further comprising a first return member disposed on the bottom plate and in driving engagement with the locking bolt, the first return member configured to provide a return force to the locking bolt to extend the locking bolt out of the locking aperture.

7. The lock according to claim 1, wherein the sliding surface is at an angle to the axial direction of the locking hole.

8. The lock according to claim 1, wherein the lock tongue includes a tongue body and a clamping member, the clamping member is disposed on the tongue body, and the sliding surface and the step surface are disposed on the clamping member.

9. The lock according to claim 1, wherein the driving member includes a push rod and a driving portion, the push rod is slidably disposed on the bottom plate, one end of the push rod is in driving connection with the dial block, and the driving portion is disposed on the bottom plate and is used for driving the push rod to slide so as to drive the dial block in a sliding process.

10. The lock of claim 9, wherein the drive portion further comprises a second reset element for driving the push rod to reset.