CN115874867A - Locking mechanism with protection function - Google Patents

Abstract

The utility model provides a take protect function's locking mechanical system, take protect function's locking mechanical system includes tapered end and lock body. Wherein, the lock head comprises a connecting hole; the lock body comprises a connecting assembly, the connecting assembly comprises a connecting piece and a protective shaft sleeve, the connecting piece is inserted into the connecting hole to be connected with the lock head, and the protective shaft sleeve is sleeved with the connecting piece; when the connecting piece is inserted into the connecting hole, at least part of the protective shaft sleeve is positioned between the inner wall of the connecting hole and the connecting piece, so that the effect that the connecting piece is clamped due to the contact of the lock head and the connecting piece is prevented, the problem that the connecting piece cannot rotate or the rotation is blocked can be solved, and the reliability of the locking mechanism is effectively improved.

Description

Locking mechanism with protection function

Technical Field

The disclosure relates to the field of battery replacement, in particular to a locking mechanism with a protection function.

Background

At present, a battery box of an electric automobile needs to be firmly locked in a bearing area of the electric automobile, and the battery box needs to be conveniently and rapidly unlocked or locked in the electric automobile when the battery is automatically replaced.

The existing locking mechanism can realize the clamping connection of a lock head and a lock body through a connecting piece. Then, the rotation of the connecting piece may be out of order due to the existence of external resistance in the rotating process of the connecting piece, and the locking or unlocking operation cannot be completed.

Disclosure of Invention

In view of the above, there is a need for a locking mechanism with a protection function, which aims to protect the connecting member against the problem of locking or unlocking failure.

To this end, the present disclosure first provides a lock mechanism with a protection function, including:

the lock head comprises a connecting hole;

the lock body comprises a connecting assembly, the connecting assembly comprises a connecting piece and a protective shaft sleeve, the connecting piece is used for being inserted into the connecting hole to be connected with the lock head, and the protective shaft sleeve is sleeved with the connecting piece; when the connecting piece is inserted into the connecting hole, at least part of the protective shaft sleeve is positioned between the inner wall of the connecting hole and the connecting piece.

According to the locking mechanism with the protection function, the lock body further comprises a lock shell, the connecting piece is rotatably connected with the lock shell, and the protection shaft sleeve is connected with the lock shell and sleeved with the connecting piece.

The locking mechanism with the protection function further comprises a clamping assembly, the clamping assembly comprises a first clamping piece and a second clamping piece, and the first clamping piece is connected with the connecting piece; the second clamping piece is connected with the lock head;

coupling assembling still includes rotates the piece, rotate a threaded connection the connecting piece first joint spare passes through second joint spare joint during the tapered end, it is relative to rotate the connecting piece rotates in order to pull connecting piece along axial displacement.

According to the locking mechanism with the protection function, the protection shaft sleeve is connected with the rotating piece and sleeved with the connecting piece. Preferably, the protective sleeve is connected with the connecting piece through threads.

The locking mechanism with the protection function further comprises a stopping component, wherein the stopping component comprises a first stopping part and a second stopping part, the first stopping part is connected with the connecting piece, and the second stopping part is connected with the rotating piece;

rotate the piece and rotate and drive when the connecting piece removes along length direction, the connecting piece drives first stop part removes to being connected behind the position of second stop part, rotate the piece and pass through first stop part and second stop part drive the connecting piece rotates, and then passes through the connecting piece drives first joint spare is relative second joint spare rotates.

According to the locking mechanism with the protection function, when the connecting piece drives the first stop piece to move to the position contacting with the second stop piece, the first stop piece and the second stop piece are connected through the friction force between the first stop piece and the second stop piece.

According to the locking mechanism with the protection function, the first stop part is a bulge which is connected with the bottom of the connecting piece and protrudes in the radial direction; the second stop part is the orientation of rotating the bellied contact surface, when the connecting piece drives first stop part moves to the position of contacting the second stop part, the arch contact the contact surface of rotating the piece.

According to locking mechanism of taking protect function, the tapered end still includes backstop portion, backstop portion is used for backstop when first joint spare and second joint spare rotate to the unblock position first joint spare continues to rotate, and is used for backstop when first joint spare and second joint spare rotate to the locking position first joint spare continues to rotate.

According to take protect function's locking mechanism, second joint spare includes bearing part and intercommunication the entering channel of connecting hole, first joint spare includes locking lever and joint portion, joint portion connect in locking lever and edge the radial direction of connecting piece extends, is used for following connecting hole and entering channel cross behind the bearing part, rotate to locking position with the joint the bearing part.

According to the locking mechanism with the protection function, the second clamping piece is provided with a clamping groove used for accommodating the clamping portion, and the bearing portion is the clamping groove.

Compared with the prior art, the locking mechanism with the protection function has the advantages that the protection shaft sleeve is arranged on the connecting piece in a sleeved mode, the protection shaft sleeve can be located between the lock head and the connecting piece in the locking or unlocking process, the lock head is prevented from being in contact with the connecting piece to clamp the connecting piece, the problem that the connecting piece is clamped and cannot rotate or the rotation is blocked can be solved, and the reliability of the locking mechanism is effectively improved.

Drawings

In order to make the description of the embodiments more clear, the drawings needed for the description of the embodiments are briefly described below, it being obvious that the drawings in the description below are some examples of the disclosure, from which other drawings may be derived by a person skilled in the art without inventive effort.

Fig. 1 is a schematic structural view of a lock mechanism with a protection function.

Fig. 2 is a schematic structural diagram of the lock cylinder.

Figure 3 is a schematic structural view of the lock body.

Figure 4 is a schematic structural view of the lock body in a disassembled state.

Fig. 5 is a schematic structural view of the first and second clips.

Fig. 6 is a sectional view of the lock mechanism with the protection function in an unlocked state.

Fig. 7 is a cross-sectional view of the locking mechanism with a protection function in a locked state.

Fig. 8 is a flow chart of a locking method.

Fig. 9 is a flowchart of an unlocking method.

Fig. 10 is a schematic structural view of a lock mechanism with a protection function in another embodiment.

Description of the main elements

The following detailed description will further illustrate the disclosure in conjunction with the above-described figures.

Detailed Description

In order that the above objects, features and advantages of the present disclosure can be more clearly understood, a detailed description of the present disclosure will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present disclosure, and the described embodiments are merely a subset of the embodiments of the present disclosure, rather than a complete embodiment. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present disclosure without making any creative effort belong to the protection scope of the present disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In various embodiments, the term "coupled" as used in the specification and claims of the present disclosure is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect, for convenience of description and not limitation of the present disclosure. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

In the field of battery replacement, a battery box is connected to a vehicle body of an electric vehicle, and the battery box needs to be locked to the vehicle body using a locking mechanism in order to prevent the battery box from moving on the vehicle body. Under the condition of normal use, the locking mechanism is in a locking state, and the battery box is fixed on the vehicle body; when the battery box needs to be replaced, the locking mechanism is driven to act through external force, and the locking mechanism is switched from a locking state to an unlocking state. At this time, the battery box can be separated from the vehicle body under the action of self weight or the battery replacement equipment.

Fig. 1 is a schematic structural diagram of a locking mechanism with a protection function, and as shown in fig. 1, the locking mechanism with the protection function includes a lock head 10 and a lock body for locking a battery box to a fixed member. The fixing piece can be a vehicle body, a battery rack or other components for installing the battery box. The locking mechanism with protection function includes a lock head 10 and a lock body, and in this embodiment, the lock head 10 is mounted to the battery box and the lock body is mounted to the fixing member, as an example. However, the embodiment is not limited to this, the lock head 10 may also be connected to a fixing member, and the lock body may also be installed in the battery box, and a person skilled in the art may set the installation positions of the lock head 10 and the lock body as required. In addition, the movement of the lock cylinder 10 and the lock body does not affect the structure of the locking mechanism. Specifically, when the needs place the battery box in the automobile body, the battery box moves down until tapered end 10 and lock body joint, promptly, under the static condition of lock body, tapered end 10 moves towards the lock body, up to tapered end 10 and lock body joint to with the battery box lock joint in the mounting, and can play the effect that prevents that the battery box from breaking away from the mounting or the battery box rocks. In other embodiments, the battery box may be jacked up by the battery replacement device, that is, the lock body moves toward the lock cylinder 10 when the lock cylinder 10 is stationary, which is not limited in this application.

Fig. 2 is a schematic structural view of the lock cylinder 10. As shown in fig. 1 and 2, the lock cylinder 10 includes an upper mounting plate 11 and a lower mounting plate 12, and the upper mounting plate 11 and the lower mounting plate 12 are disposed substantially in parallel. Two connecting columns are also arranged between the upper mounting plate 11 and the lower mounting plate 12 as a stop part 13. In this embodiment, the lock head 10 further includes a second clamping member for clamping the lock body. The clamping is a connection mode formed by hooking two connecting parts. In addition, the lock cylinder 10 includes a coupling aperture for mating with a lock body through which components of the lock cylinder may snap into engagement with the lock cylinder.

Fig. 3 is a schematic structural view of the lock body, and fig. 4 is a schematic structural view of the lock body in a disassembled state. As shown in fig. 3 and 4, the lock body includes a lock case 30, a first snap member, a connecting member, and a stopper member. First joint spare is corresponding to second joint spare for with the butt joint of second joint spare, realize the joint of tapered end 10 and lock body and be connected, coupling assembling is used for pulling first joint spare and second joint spare relative movement in order to lock tapered end 10 and lock body, backstop subassembly is used for backstop coupling assembling's rotation.

Fig. 5 is a schematic structural view of the first and second clips. As shown in fig. 1 to 5, the first clamping member and the second clamping member are used for clamping the lock head 10 and the lock body, that is, when the lock head 10 and the lock body move in opposite directions to a preset position, the first clamping member and the second clamping member are hooked with each other, so that the lock head 10 and the lock body are clamped by the first clamping member and the second clamping member.

In the present embodiment, as shown in fig. 2 and 5, the second clip includes a bearing portion 21 and an entry passage 22. In this embodiment, the bearing portion 21 is a side surface of the lock cylinder 10 far from the lock body. In this embodiment, the second engaging member has an engaging groove 121 for accommodating the engaging portion 23, and the supporting portion 21 is preferably an inner wall of the engaging groove 121. The inlet passage 22 of the second clip member is a strip-shaped through hole that penetrates the second mounting plate of the lock head 10. In other embodiments, the entry channel 22 may also be a special-shaped hole with other shapes, such as a cross-shaped or a quincuncial through hole, so that the second engaging member can be engaged with the carrying surface by rotating a predetermined angle after passing through the entry channel 22 to achieve the engaging connection. In the present embodiment, the inlet passage 22 and the connection hole are integrally structured, and the inlet passage 22 described later is also referred to as a connection hole.

As shown in fig. 4 and 5, the first catching piece includes a locking lever 20 and a catching portion 23. In the present embodiment, the locking lever 20 is coaxially connected to the connecting member 60 of the connecting assembly and is integrally provided with the connecting member 60. However, a person skilled in the art may set the locking rod 20 in other shapes, and the locking rod 20 may also be set separately, so that the connecting member 60 may drive the locking rod 20 to rotate when rotating, thereby completing the clamping action. The clamping portion 23 is connected to the locking bar 20 and extends along the radial direction of the locking bar 20 for hooking to the bearing portion 21. In the present embodiment, the number of the clamping portions 23 may be two, and the two clamping portions extend along the radial direction of the lock rod 20 to form a T-shaped structure with the lock rod 20, but in other embodiments, the clamping portions 23 may have other shapes, such as a quincunx shape, a cross shape, or a m shape. The catching portion 23 has a locked position and an unlocked position during rotation, depending on the relative position between the catching portion 23 and the access passage 22.

As shown in fig. 5, the solid line shows that the locking portion 23 is in a locking position, which is a position where the locking portion 23 is rotated to at least partially overlap with the bearing portion 21 along the length of the lock lever 20, preferably a position where the locking portion 23 is perpendicular to the length direction of the entering channel 22, that is, a position where the locking portion 23 is located in the locking groove 121 shown in fig. 5. When the clamping portion 23 is in the locked state, the clamping portion 23 is first in the locked position, and then the clamping portion 23 is pulled to approach the bearing portion 21 until the clamping portion 23 abuts against the bearing portion 21 in the clamping groove 121. The snap-in portion 23 shown in dotted lines in fig. 5 is in the unlocked position. The unlocked position is a position in which the catch 23 corresponds to said access passage 22, so that the catch 23 can be moved along the access passage 22 until the locking head 10 is disengaged from the lock body, or alternatively, the catch 23 can be moved along the access passage 22 to a position beyond the carrier 21. The technical personnel in the field understand, the position of first joint portion and second joint portion can also be exchanged, and first joint portion connects in tapered end 10, and second joint portion connects in the lock body, and technical personnel in the field can set up the connection structure of first joint portion and the joinable portion of second as required.

In order to control the rotation angle between the first clamping piece and the second clamping piece, the blocking portions 13 of the lock head 10 are two in number, are arranged at intervals of 90 degrees in the circumferential direction and are respectively located at the locking position and the unlocking position. Backstop portion 13 is in backstop when first joint spare and second joint spare rotate to the unblock position first joint spare continues to rotate, and be used for backstop when first joint spare and second joint spare rotate to the locking position first joint spare continues to rotate. Therefore, the stopper portion 13 functions to block the first engaging member from rotating in one direction, so that the first engaging member rotates between the unlocking position and the locking position.

Fig. 6 is a sectional view of the lock mechanism with the protection function in an unlocked state, and fig. 7 is a sectional view of the lock mechanism with the protection function in a locked state. As shown in fig. 6 and 7, the connecting assembly includes a connecting member 60, a rotating member 40 and a protective sleeve 70 for driving the first engaging member to move in an axial direction (i.e., a length direction of the connecting member 60) to lock the battery case and the fixing member.

The connector 60 is a generally rod-like mechanism that at least partially includes a threaded segment 61. The connecting member 60 has one end coaxially connected to the locking bar 20 and the other end movably connected to the housing 30 in the axial direction and extended into the housing 30. The rotary member 40 is located within the lock housing 30 and is rotatably connected to the lock housing 30. The rotatable member 40 is threadedly coupled to the coupling member 60 at a threaded portion 61, and the coupling member 60 is driven to move along the length of the coupling member 60 by rotation of the rotatable member 40 relative to the coupling member 60. The protection shaft sleeve 70 is sleeved on the outer side of the connecting element 60 and has a certain length, so that when the connecting element 60 is inserted into the connecting hole (i.e. the entering channel 22), at least part of the protection shaft sleeve 70 is positioned between the inner wall of the connecting hole (i.e. the entering channel 200) and the connecting element 60, so that the protection shaft sleeve 70 can isolate the connecting element 60 from the lock head 10, the effect of blocking the connecting element 60 due to contact between the lock head 20 and the connecting element 60 is prevented, the problem that the connecting element 60 cannot rotate or is blocked from rotating can be solved, and the reliability of the locking mechanism is effectively improved. In addition, because the connecting piece 60 plays a role in pulling the lock body and the lock head 10 in the locking process, in the using process, the protective shaft sleeve 70 is sleeved on the outer side of the connecting piece 60 and can also play a role in protecting the connecting piece 60, so that the connecting piece 60 is prevented from being abraded due to scratching or collision of other parts on the connecting piece 60 in the using process, and the connecting strength of the connecting piece 60 is reduced. Moreover, because the general service environment of the locking mechanism with the protection function is relatively severe, the protection shaft sleeve 70 is sleeved outside the connecting piece 60, and the problem that the rotation of the connecting piece 60 is blocked in the locking or unlocking process due to the fact that the connecting piece 60 is polluted by impurities such as oil stains and dust can be solved.

In the present embodiment, the protective sleeve 70 is coaxially connected to the rotating member 40, the protective sleeve 70 and the rotating member 40 may be integrated, or the protective sleeve 70 and the rotating member 40 may be connected by welding, riveting or other methods. The protective bushing 70 and the rotation member 40 are respectively positioned at both ends of the lock case 30 through the lock case 30. However, in other embodiments, the rotating member 40 is rotatably connected to the lock housing 30, the protecting sleeve 70 is connected to the lock housing 30 and is sleeved on the connecting member 60, for example, the protecting sleeve 70 may be formed integrally with the lock housing 30, or may be welded, riveted, or otherwise connected to the lock housing 30. In some embodiments, the inner wall of the protective sleeve 70 is not threaded and only fits over the outside of the connector 60; in other embodiments, in the case that the protective sleeve 70 is coupled to the rotation member 40, the inner wall of the protective sleeve 70 is at least partially provided with threads, and the thread direction, the thread pitch, and the like are the same as those of the rotation member 40, so that the protective sleeve 70 is coupled to the coupling member 60 by the threads, thereby supporting the coupling member 60 during the locking or unlocking.

The stopping assembly includes a first stopping member 50 and a second stopping member 51, the first stopping member 50 is connected with the connecting member 60, and the second stopping member 51 is connected with the rotating member 40. When the rotating member 40 rotates to drive the connecting member 60 to move along the length direction, after the connecting member 60 drives the first stop member 50 to move to the position where the second stop member 51 is connected, the rotating member 40 drives the connecting member 60 to rotate through the first stop member 50 and the second stop member 51. Like this, through the less strong engaging force of first stop member 50 and second stop member 51, under the less circumstances of resistance, rotate the piece 40 and can drive connecting piece 60 and rotate together, drive first joint spare through connecting piece 60 and rotate and adjust the angle between first joint spare and the second joint spare, accomplish the switching of unblock position and locking position. Then, since the first engaging member is stopped by the stopping portion 13 after rotating to the target position, at this time, after the driving force of the rotating member 40 is greater than the weak connecting force between the first stopping member 50 and the second stopping member 51, the rotating member 40 can be continuously driven to rotate relative to the connecting member 60, and the connecting member 60 is pulled to move along the length direction, so that the precise control of the movement of the connecting member 60 is realized.

Those skilled in the art understand that the realization of the coupling force between the first stopper 50 and the second stopper 51 may be realized in various ways. In the present embodiment, the first stopper 50 is a protrusion connected to the bottom of the connector and protruding in the radial direction, is coaxially connected to the bottom of the connector 60 by screw fixation, and protrudes in the radial direction from the connector 60. The second stopper 51 is an end surface (i.e., a contact surface capable of contacting a protrusion) of the bottom of the rotating member 40, the connecting member 60 drives the first stopper 50 to move to a position contacting the second stopper 51, the first stopper 50 abuts against the second stopper 51, and the first stopper 50 and the second stopper 51 are connected by friction between the first stopper 50 and the second stopper 51. In this embodiment, the first stopper 50 is a cylinder, but in other embodiments, the first stopper 50 may be a cone, and the side of the cone facing the second stopper 51 is a conical surface; correspondingly, in the present embodiment, the second stopper 51 is a lower end surface of the rotating member 40, and the lower end surface is a plane, but in other embodiments, the second stopper 51 may also be a tapered surface, i.e. a tapered cavity, for receiving and abutting against the first stopper 50 to achieve a friction connection with the first stopper 50.

In order to increase the friction force of the first and second stoppers 50 and 51, in some embodiments, a friction line may be further provided on at least one of the opposite sides of the first and second stoppers 50 and 51 to increase the friction force of the first and second stoppers 50 and 51 when abutting. However, it is understood by those skilled in the art that the first stop member 50 can be connected to the second stop member 51 in other ways, for example, at least one of the first stop member 50 and the second stop member 51 has a magnetic force, and when the connecting member 60 drives the first stop member 50 to move to a position close to the second stop member 51, the first stop member 50 and the second stop member 51 are connected by the magnetic force between the first stop member 50 and the second stop member 51. Like this, first stop part 50 is connected when second stop part 51, it passes through to rotate piece 40 first stop part 50 and second stop part 51 drive connecting piece 60 rotates, and then passes through connecting piece 60 drives first joint spare rotates to the joint the position of second joint spare.

Fig. 8 is a flow chart of a locking method, and the locking method implemented by the locking mechanism is described in detail below with reference to fig. 8. As shown in fig. 8, the locking method includes steps S801 to S804. In the initial state, the first stop element 50 and the second stop element 51 are in a connected state, that is, a certain pressure is provided between the first stop element 50 and the second stop element 51 to make abutting contact, and the rotating element 40 can drive the connecting element 60 to rotate through the first stop element 50 and the second stop element 51.

Step S801: the first clamping piece and the second clamping piece move oppositely at unlocking positions until the clamping part 23 of the first clamping piece crosses the bearing part 21 of the second clamping piece. At this time, the top of the protective sleeve 70 is positioned at the location of the coupling hole (i.e., the entry path 22) of the lock cylinder 10, separating the rotation member 40 from the inner wall of the entry path 22.

Step S802: the rotating member 40 drives the connecting member 60 to rotate through the friction force between the first stop member 50 and the second stop member 51, and the connecting member 60 drives the first clamping member to rotate relative to the second clamping member in the protecting shaft sleeve 70 until the first clamping member and the second clamping member rotate to the locking position. At this time, the clamping portion 23 of the first clamping member is located above the bearing portion 21, the clamping portion 23 of the first clamping member is stopped by the stopping portion 13, and then the rotation of the connecting member 60 is stopped, so that the connecting member 60 cannot continue to rotate.

Step S803: the rotating member 40 continues to rotate with a force greater than the force between the first and second stoppers 50 and 51, and at this time, the rotating member 40 rotates relative to the connecting member 60, and drives the connecting member 60 to move in the protective sleeve 70 in the longitudinal direction.

Step S804: the connecting piece 60 drives the clamping part 23 of the first clamping part to hook the bearing part 21 of the second clamping part, and the lock head 10 and the lock body are pulled to move in opposite directions to lock the battery box on the fixing part, so that the locking action is completed.

Fig. 9 is a flowchart of an unlocking method, and the unlocking method implemented by the locking mechanism is described in detail below with reference to fig. 9. As shown in fig. 9, the unlocking method includes steps S901 to 905. In an initial state, the clamping portion 23 of the first clamping member presses on the bearing portion 21 of the second clamping portion 23, and at this time, on one hand, the clamping portion 23 cannot directly rotate due to a large friction force between the clamping portion 23 and the bearing portion 21, and the clamping portion 23 needs to be unlocked after being away from the bearing portion 21 for a distance; in addition, on the one hand, in order to prevent the engaging portion 23 from rotating by itself under the action of an external force and entering the unlocking position, in some embodiments, the bearing portion 21 is disposed in the engaging groove 121, so that the engaging portion 23 needs to be unlocked after being away from the bearing portion 21 by a distance (at least greater than the depth of the engaging groove 121) when unlocking. Furthermore, there is a distance between the first stop 13 and the second stop 13, and there is no connecting force between the two.

Step S901: the rotation member 40 rotates relative to the connection member 60, and moves the connection member 60 in a length direction. Since there is no contact between the first stopper 50 and the second stopper 51 in the initial state, there is no frictional force therebetween; meanwhile, the connecting member 60 is pressed in the engaging groove 121 through the engaging portion 23 and cannot rotate, so that when the rotating member 40 rotates, the rotating member moves in a manner of rotating relative to the connecting member 60.

Step S902: the connecting member 60 drives the first engaging member to move in a direction away from the second engaging member during the moving process along the length direction in the protecting shaft sleeve 70, and meanwhile, the connecting member 60 also drives the first stopping member 50 to move in a direction close to the second stopping member 51. Specifically, the connecting element 60 moves along the upper direction shown in fig. 7 under the driving of the rotating element 40, on the one hand, the clamping portion 23 is driven to move upwards to be separated from the contact of the bearing portion 21; the other aspect brings the first stopper 50 close to the second stopper 51 (i.e., the end face close to the bottom of the rotation member 40).

Step S903: when the first stopper 50 moves to a position where the second stopper 51 is connected, the first and second snap members have a predetermined distance in a length direction. At this time, the first stopper 50 abuts against the second stopper 51, and the locking portion 23 is rotated out of the locking groove 121.

Step S904: the rotating part 40 drives the connecting part 60 to rotate through the first stop part 50 and the second stop part 51, and the connecting part 60 drives the first clamping part to rotate to an unlocking position relative to the second clamping part. After the unlocking position is reached, the connecting element 60 is stopped by the stopping portion 13 through the first clamping member, so that the connecting element 60 cannot continue to rotate, and the rotating element 40 cannot continue to drive the connecting element 60 to rotate, that is, the rotation of the rotating element 40 is stopped, so that the connecting element 60 can be determined to rotate to the unlocking position. The unlocking position is that the clamping part 23 of the first clamping piece corresponds to the entering channel 22 of the second clamping part 23.

Step S905: the clamping portion 23 of the first clamping member moves along the access passage 22 of the second clamping portion 23 until the second clamping member is separated from the access passage 22, and the whole unlocking action is completed.

In the above-described locking mechanism with a protection function, the first stop member 50 and the second stop member 51 are disposed between the connecting member 60 and the rotating member 40, and the rotating member 40 can drive the connecting member 60 to rotate by the connecting force between the first stop member 50 and the second stop member 51, so that the connecting member 60 can rotate to the unlocking position or the locking position. In the application, only need set up first stop part 50 and second stop part 51 between connecting piece 60 and rotation piece 40 and can realize the rotation of connecting rod and the accurate control of removal action, simple structure not only has effectively reduced locking mechanism's manufacturing cost, convenient operation has improved connecting piece 60 and has been blocked or the problem that rotates the unsmooth in rotation and removal process moreover.

Moreover, in the locking or unlocking process of the connecting element 60, the protective shaft sleeve 70 can be positioned between the lock head 10 and the connecting element 60, so that the effect of blocking the connecting element 60 due to the contact between the lock head 10 and the connecting element 60 is prevented, the problem that the connecting element 60 cannot rotate or is blocked due to the blocking can be solved, and the reliability of the locking mechanism is effectively improved.

Fig. 10 is a schematic structural view of a lock mechanism with a protection function in another embodiment. As shown in fig. 10, the lock cylinder 10 has a coupling hole 14 and a threaded hole. The lock body coupling member 60 is rotatably coupled to the lock case 30 to be rotatable relative to the lock case 30. Meanwhile, the top of the connecting member 60 is provided with a thread corresponding to the threaded hole, and the lock body is connected with the lock head 10 through the threaded connection. In this embodiment, the protective sleeve 70 is fixedly connected to the lock case 30 or is integrally provided with the lock case 30.

When the lock is used, the lock body is close to the lock head 10 until the outer end part of the protective shaft sleeve 70 is inserted into the connecting hole 14, so that the connecting piece 60 is separated from the lock head 10, and the lock head 10 is prevented from clamping the connecting piece 60 to prevent the rotation of the connecting piece 60 from being blocked. Then, the connecting element 60 continues to move in the direction close to the lock head 10 until the connecting element 60 is in butt joint with the threaded hole to achieve connection with the lock head 10, and the locking action of the locking mechanism is completed. The unlocking process is reversed and will not be described in detail here.

In the locking or unlocking process of the locking mechanism with the protection function, the protection shaft sleeve 70 can be positioned between the lock head 10 and the connecting piece 60, so that the lock head 10 is prevented from contacting with the connecting piece 60 to block the connecting piece 60, the problem that the connecting piece 60 cannot rotate or is blocked in rotation due to being blocked can be solved, and the reliability of the locking mechanism is effectively improved.

In the several embodiments provided in the present disclosure, it is apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.

Although the present disclosure has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present disclosure.

Claims (11)

1. A locking mechanism with a protection function is characterized by comprising:

the lock head comprises a connecting hole;

the lock body comprises a connecting assembly, the connecting assembly comprises a connecting piece and a protective shaft sleeve, the connecting piece is inserted into the connecting hole to be connected with the lock head, and the protective shaft sleeve is sleeved with the connecting piece; when the connecting piece is inserted into the connecting hole, at least part of the protective shaft sleeve is positioned between the inner wall of the connecting hole and the connecting piece.

2. The locking mechanism with protection as claimed in claim 1, wherein said lock body further comprises a lock housing, said connecting member is rotatably connected to said lock housing, and said protection sleeve is connected to said lock housing and is fitted over said connecting member.

3. The locking mechanism with the protection function according to claim 1, further comprising a clamping assembly, wherein the clamping assembly comprises a first clamping piece and a second clamping piece, and the first clamping piece is connected with the connecting piece; the second clamping piece is connected with the lock head;

coupling assembling is still including rotating the piece, rotate a threaded connection the connecting piece first joint spare passes through second joint spare joint during the tapered end, it is relative to rotate the connecting piece rotates in order to pull connecting piece along axial displacement.

4. The locking mechanism with protection as claimed in claim 3, wherein the protection bushing is connected to the rotation member and sleeved on the connection member.

5. The locking mechanism with protection function as claimed in claim 4, wherein the protection sleeve is connected with the connecting piece by screw thread.

6. The lock mechanism with protection function as claimed in claim 3, further comprising a stop assembly, said stop assembly comprising a first stop member and a second stop member, said first stop member being connected to said connecting member, said second stop member being connected to said rotating member;

rotate the rotation and drive when the connecting piece removes along length direction, the connecting piece drives first stop part removes to connecting behind the position of second stop part, it passes through to rotate the piece first stop part and second stop part drive the connecting piece rotates, and then passes through the connecting piece drives first joint spare is relative second joint spare rotates.

7. The latch mechanism with protection function according to claim 6, wherein the first stopper and the second stopper are connected by a frictional force between the first stopper and the second stopper when the connecting member moves the first stopper to a position contacting the second stopper.

8. The latch mechanism with protection function of claim 7, wherein said first stopper is a protrusion connected to the bottom of said connecting member and protruding in a radial direction; the second stop part is towards of rotating part protruding contact surface, when the connecting piece drives first stop part moves to the position of contacting the second stop part, protruding contact the contact surface of rotating part.

9. The locking mechanism with protection function of claim 8, wherein the lock head further comprises a stopping portion for stopping the first engaging member from further rotating when the first engaging member and the second engaging member rotate to the unlocking position, and for stopping the first engaging member from further rotating when the first engaging member and the second engaging member rotate to the locking position.

10. The locking mechanism with the protection function according to claim 9, wherein the second clamping member includes a bearing portion and an entrance passage communicating with the connecting hole, the first clamping member includes a lock rod and a clamping portion, the clamping portion is connected to the lock rod and extends along a radial direction of the connecting member, and is configured to rotate to a locking position to clamp the bearing portion after the connecting hole and the entrance passage cross over the bearing portion.

11. The locking mechanism with protection function as claimed in claim 10, wherein the second engaging member has an engaging groove for receiving the engaging portion, and the bearing portion is the engaging groove.

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