CN215717882U - Back locking structure and lock - Google Patents

Abstract

The utility model provides a counter lock structure and a lock, and relates to the technical field of lock equipment. The back locking structure comprises a shell, a knob, a fixing buckle and a square shaft. The fixing buckle is arranged inside the shell; the fixing buckle comprises a main body and a first elastic buckle; the main part is provided with a mounting hole, and the first elastic buckle is connected to the main part and is positioned in the mounting hole. The knob is provided with a transmission end; the transmission end extends into the shell and the mounting hole; first elasticity is detained from the radial direction joint in the transmission end of transmission end to provide the ascending restriction effect of axial direction for the transmission end. The square shaft extends into the shell from the other side of the shell, and the square shaft extends into the mounting hole to be matched with the knob. The lock provided by the utility model adopts the counter locking structure. The counter-locking mechanism and the counter-locking lock provided by the utility model can solve the technical problems that the counter-locking device in the prior art is complex in structure, high in manufacturing cost and low in cost performance of products.

Description

Back locking structure and lock

Technical Field

The utility model relates to the technical field of lock equipment, in particular to a back locking structure and a lock.

Background

With the development of science and technology, consumer safety awareness is high, and in order to provide higher-quality safety insurance for own properties and living areas, the functional requirements on the lock are higher and higher. And the lock can close the exit of the area designated by the consumer. Wherein, the lock generally has the back locking device to further promote the intensity of safety insurance.

In the prior art, the current back locking device is mostly composed of a back locking knob, a shell, a square shaft fixing seat, a clamp spring or a screw, a torsion spring, a square shaft cover and a square shaft, wherein the square shaft fixing seat and the back locking knob are fixed together through the clamp spring or the screw, the structure is complex, the manufacturing cost is high, and the cost performance of the product is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a back locking structure which can solve the technical problems that the back locking device in the prior art is complex in structure and high in manufacturing cost, and the cost performance of a product is reduced.

The utility model also aims to provide a lock which can solve the technical problems of complex structure and high manufacturing cost in the prior art, thereby reducing the cost performance of the product.

Embodiments of the utility model may be implemented as follows:

in a first aspect, an embodiment of the present invention provides an anti-lock structure, where the anti-lock structure includes a housing, a knob, a fixing buckle, and a square shaft;

the fixing buckle is arranged inside the shell; the fixing buckle comprises a main body and a first elastic buckle; the main body is provided with a mounting hole, and the first elastic buckle is connected to the main body and is positioned in the mounting hole;

the knob is provided with a transmission end; the transmission end extends into the shell from one side of the shell and extends into the mounting hole; the first elastic buckle is clamped at the transmission end from the radial direction of the transmission end so as to provide limit in the axial direction for the transmission end;

the square shaft extends into the shell from the other side of the shell, and the square shaft extends into the mounting hole to be matched with the knob.

Compared with the prior art, the counter-locking structure provided by the utility model has the beneficial effects that:

in this counter-lock structure, the cooperation between transmission end and the fixed knot is realized through the first elasticity knot on the fixed knot to the transmission end of knob to can ensure the stability between fixed knot and the transmission end, can accomplish the stable transmission cooperation of counter-lock structure internals from this. Wherein, because can accomplish the cooperation of transmission end and fixed knot through first elasticity knot, just can save and realize the cooperation between knob and the fixed knot through screw or jump ring, not only reduced the part of anti-lock structure, still simplified the assembly process of anti-lock structure simultaneously to the cost of manufacture of anti-lock structure has been reduced. In other words, the counter locking structure provided by the utility model can solve the technical problems that the product cost performance is reduced due to the fact that the structure is complex and the manufacturing cost is high in the prior art.

Optionally, the transmission end is provided with a first limiting groove along the periphery of the radial direction, and the first elastic buckle is embedded into the first limiting groove to be matched with the first limiting groove.

Optionally, the first elastic buckle includes a connecting portion and a third abutting portion; one end of the connecting part is connected with the main body, and the third abutting part is connected with the connecting part and forms an included angle with the connecting part; the third abutting part is embedded into the first limiting groove.

Optionally, the fixing buckle further comprises a second elastic buckle and a third elastic buckle;

the second elastic buckle is arranged on one side of the main body far away from the first elastic buckle, and the transmission end penetrates through the mounting hole and abuts against the second elastic buckle;

the third elastic buckle is arranged at one end of the second elastic buckle far away from the main body, and the third elastic buckle is matched with the square shaft.

Optionally, the second elastic buckle includes a first abutting portion and a second abutting portion, and the second abutting portion is connected to the main body and located on a side of the main body away from the first elastic buckle; the first abutting part is arranged on one side of the second abutting part close to the axis of the mounting hole, and the transmission end abuts against the first abutting part;

the third elastic buckle is arranged on the first abutting part and/or the second abutting part.

Optionally, the end of the transmission end is provided with a positioning groove, and the first abutting portion is embedded into the positioning groove and abuts against the bottom wall which is surrounded to form the positioning groove.

Optionally, the second abutting portion is at least partially disposed inside the mounting hole, and the second abutting portion is engaged with an outer wall of the transmission end.

Optionally, the number of the second elastic buckles is multiple, and the multiple second elastic buckles are arranged at intervals and distributed around the axis of the mounting hole; the third elastic buckle is arranged at the end part of at least one second elastic buckle far away from the main body.

Optionally, the transmission end is provided with an assembly hole, and the square shaft extends into the assembly hole to be matched with the transmission end;

a plurality of first grooves and a plurality of second grooves are formed in the inner peripheral wall of the assembling hole and are arranged in a staggered mode; the first grooves form a first position for accommodating the square shaft; the plurality of second grooves form a second position for receiving the square shaft.

Optionally, the third elastic buckle is provided with at least one first matching groove and at least one second matching groove; the first matching groove corresponds to one of the first grooves, so that the square shaft passes through the first matching groove and is arranged at a first position; the second matching groove corresponds to one of the second grooves, so that the square shaft passes through the second matching groove to be installed in the second position.

Optionally, a second limiting groove is formed in the periphery of the square shaft in the radial direction; the third elastic buckle is embedded into the second limiting groove.

Optionally, a side of the third elastic buckle far away from the second elastic buckle is provided with a guide inclined plane, and the guide inclined plane is configured to be abutted by the square shaft to push the third elastic buckle to avoid the square shaft.

Optionally, the counter-locking structure further comprises an orientation structure and a resilient member; the orientation structure is arranged on the fixing buckle and is provided with at least two groups of matching surface groups, and each group of matching surface group comprises two matching surfaces which are parallel to each other; the elastic piece is connected with the shell, and the elastic piece is matched with two matching surfaces in one matching surface group to clamp the orientation structure.

In a second aspect, embodiments of the present application further provide a lock, including an anti-lock structure. The back locking structure comprises a shell, a knob, a fixing buckle and a square shaft;

the fixing buckle is arranged inside the shell; the fixing buckle comprises a main body and a first elastic buckle; the main body is provided with a mounting hole, and the first elastic buckle is connected to the main body and is positioned in the mounting hole;

the knob is provided with a transmission end; the transmission end extends into the shell from one side of the shell and extends into the mounting hole; the first elastic buckle is clamped at the transmission end from the radial direction of the transmission end so as to provide limit in the axial direction for the transmission end;

the square shaft extends into the shell from the other side of the shell, and the square shaft extends into the mounting hole to be matched with the knob.

The lock provided by the utility model adopts the counter-locking structure, and the beneficial effects of the lock in comparison with the prior art are the same as the beneficial effects of the counter-locking structure in comparison with the prior art, and are not repeated herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an anti-lock structure provided in an embodiment of the present application;

FIG. 2 is an exploded view of the back-locking mechanism provided in the embodiments of the present application;

FIG. 3 is an enlarged view of the structure at B in FIG. 2;

fig. 4 is a partial structural view of an anti-lock structure provided in an embodiment of the present application at a first viewing angle;

fig. 5 is a partial structural view of an anti-lock structure provided in the embodiment of the present application at a second viewing angle;

fig. 6 is a schematic structural view of a fixing buckle provided in the embodiment of the present application at a first viewing angle;

FIG. 7 is an enlarged view of the structure at A in FIG. 6;

FIG. 8 is a schematic view of a knob provided in an embodiment of the present application;

fig. 9 is a schematic structural view of the fixing buckle provided in the embodiment of the present application at a second viewing angle;

fig. 10 is a schematic structural diagram of a knob provided in the embodiment of the present application in a second viewing angle.

Icon: 10-a back locking structure; 100-a housing; 200-knob; 210-a knob body; 220-a transmission end; 221-assembly holes; 2211-first groove; 2212-second groove; 222-a positioning groove; 223-a first limit groove; 300-fixing buckle; 310-a body; 311-mounting holes; 312-a receiving hole; 320-a second elastic buckle; 321-a first abutting part; 322-a second holding portion; 330-third elastic buckle; 331-a clamping portion; 332-a first mating groove; 333-a second mating groove; 334-a guide ramp; 340-a first elastic buckle; 341-a connecting portion; 342-a third holding portion; 350-an oriented structure; 351-an elastic member; 352-mating surface; 400-square shaft; 410-a second limit groove; 420-edge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, it is only for convenience of describing the present invention and simplifying the description, but it is not necessary to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, it should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1, in an embodiment of the present application, a lock is provided, and is configured to be mounted on a door body, and the door body is configured to be mounted at an exit or an entrance of a designated area, so that in a case where the door body closes the exit or the entrance, a function of locking the door body can be achieved through the lock. Of course, the lock has an anti-lock function, in other words, the lock includes the anti-lock structure 10, and the anti-lock structure 10 can provide the anti-lock function, so as to improve the safety and reliability of the locking of the door body.

In the prior art, the structure of the counter lock device is complex, and the manufacturing and assembly of the counter lock device need to consume large cost, so that the cost performance of the counter lock device is reduced. For example, the back locking device comprises a back locking knob, a shell, a square shaft fixing seat, a clamp spring, a screw, a square shaft cover, a square shaft and other parts.

The technical problem that the cost performance of a product is reduced due to the fact that a counter locking device in the prior art is complex in structure and high in manufacturing cost is solved. An inverted lock structure 10 of the present application is provided, and a lock employing the inverted lock structure 10 is also provided.

With continued reference to fig. 1, the locking structure 10 includes a housing 100, a knob 200, a fixing buckle 300, and a square shaft 400. A portion of the knob 200 extends into the interior of the housing 100 and is rotatably engaged with the housing 100. The holder buckle 300 is disposed inside the case 100. One end of the square shaft 400 extends into the interior of the housing 100. In addition, the knob 200 penetrates into the inside of the holder buckle 300 from one side of the holder buckle 300, and the knob 200 is detachably engaged with the holder buckle 300. One end of the square shaft 400 penetrates the knob 200 from the other side of the holder buckle 300 to be engaged with the knob 200. Thus, the knob 200 is configured to rotate the holder buckle 300 and the square shaft 400 when rotating relative to the housing 100. In other words, when the knob 200 rotates relative to the housing 100, the fixing buckle 300 and the square shaft 400 can be driven to rotate, so that the square shaft 400 can be driven to perform the operation of locking, thereby implementing the locking function.

It should be noted that, the anti-lock structure 10 can realize the transmission of the square shaft 400 through the direct connection between the knob 200 and the square shaft 400, and can realize the anti-lock function through the way that the knob 200 directly drives the square shaft 400. Therefore, the counter lock structure 10 can achieve the counter lock function only by using the parts such as the housing 100, the knob 200, the fixing buckle 300, the square shaft 400, and the like, and the number of the components of the counter lock structure 10 is reduced compared with the counter lock device in the prior art, so that the number of assembling steps is reduced, in other words, not only the cost can be reduced by material deletion, but also the manufacturing cost can be reduced in the assembling process, so that the cost of the counter lock structure 10 is reduced, and the cost performance of the counter lock structure 10 is increased. Therefore, the technical problems that the structure of the back locking device is complex and the manufacturing cost is high in the prior art, and the cost performance of the product is reduced can be solved.

In order to facilitate the operation of the knob 200 by the user, please refer to fig. 1 and fig. 2 in combination, the knob 200 may include a knob body 210 and a driving end 220, and the knob body 210 and the driving end 220 are fixedly connected, but it may also be considered that the knob body 210 and the driving end 220 are integrally formed parts. The transmission end 220 extends into the housing 100 from one side of the housing 100 and is matched with the square shaft 400; the knob body 210 is located outside the housing 100 for easy operation by the user. When the user screws the knob body 210, the knob body 210 can drive the transmission end 220 to rotate, so that the transmission end 220 drives the transmission end 220 to rotate, and the transmission end 220 can drive the square shaft 400 to rotate, thereby implementing the lock-back function. Of course, in order to facilitate the rotatable engagement between the knob 200 and the housing 100, a rotation engagement hole is formed on the housing 100, the driving end 220 extends into the housing 100 from the rotation engagement hole, and one end of the driving end 220 close to the knob body 210 is rotatably engaged with the housing 100, thereby achieving the rotatable engagement between the knob 200 and the housing 100.

For convenience of description of the anti-lock structure 10, the driving end 220 is generally cylindrical. Of course, in other embodiments of the present application, the driving end 220 may also be formed in other shapes such as a prism shape or a frustum shape. In addition, in order to facilitate the matching between the transmission end 220 and other parts inside the lock, other structures may be further disposed on the transmission end 220, and are not described herein again.

Referring to fig. 2, 4 and 5, the fixing buckle 300 includes a main body 310, a second elastic buckle 320 and a third elastic buckle 330. The second elastic buckle 320 is disposed at one side of the main body 310, and the driving end 220 penetrates through the main body 310 from the other side of the main body 310 and abuts against the second elastic buckle 320. In other words, after the driving end 220 passes through the body 310, the driving end 220 may be provided with an axial positioning by the second elastic buckle 320, so that the driving end 220 is more precisely fitted with the holder buckle 300. In addition, the third elastic buckle 330 is disposed on the second elastic buckle 320 at an end away from the main body 310, and the third elastic buckle 330 abuts against the square shaft 400. In other words, under the condition that the square shaft 400 is matched with the transmission end 220, the third elastic buckle 330 provides a propping effect for the square shaft 400, so that the square shaft 400 is ensured to be fixed relative to the transmission end 220, the transmission end 220 is matched with the square shaft 400 relatively stably, and the matching stability of the transmission end 220 and the square shaft 400 can be improved.

It should be noted that, referring to fig. 6 and 7, in order to facilitate the driving end 220 to pass through the main body 310, a mounting hole 311 is formed on the main body 310, and the driving end 220 can pass through the mounting hole 311, so that the driving end 220 passes through the main body 310 from one side of the main body 310. Optionally, in some embodiments of the present application, the second elastic buckle 320 includes a first abutting portion 321, and the first abutting portion 321 is connected to the main body 310 and located outside the mounting hole 311. Further, in the radial direction of the mounting hole 311, the first abutting portion 321 is provided to be convex toward the axis of the mounting hole 311, in other words, when the axial direction of the mounting hole 311 is taken as the projection direction, a part of the projection of the first abutting portion 321 is positioned inside the mounting hole 311. Therefore, in the case that the driving end 220 passes through the mounting hole 311, the driving end 220 can abut against the first abutting portion 321, so that the positioning in the axial direction is provided for the driving end 220 through the first abutting portion 321, so as to ensure that the fixing buckle 300 and the driving end 220 can be assembled in a specified manner. In addition, the third elastic buckle 330 is disposed on the first abutting portion 321. Therefore, under the condition that the end part of the square shaft 400 is matched with the transmission end 220, the third elastic buckle 330 can be abutted against the square shaft 400, and the stability of the square shaft 400 is ensured.

It should be understood that in other embodiments of the present application, the first abutting portion 321 may be disposed inside the mounting hole 311.

Referring to fig. 8, in order to improve the mounting position accuracy of the driving end 220, optionally, a positioning groove 222 is further formed at an end of the driving end 220, the first abutting portion 321 is matched with the positioning groove 222, and the first abutting portion 321 abuts against a bottom wall surrounding the positioning groove 222. In other words, under the condition that the transmission end 220 is matched with the second elastic buckle 320, the first abutting portion 321 is accommodated in the positioning slot 222, and abuts against the bottom wall enclosing the positioning slot 222 through the first abutting portion 321 to realize the positioning of the axis of the transmission end 220 by the second elastic buckle 320. In addition, under the condition that the first abutting portion 321 and the positioning slot 222 are mutually matched, the transmission end 220 can be prevented from rotating relative to the main body 310 by taking the axis of the transmission end 220 as a rotation center, so that the transmission end 220 can improve the matching stability of the transmission end 220 and the fixing buckle 300. In addition, through the cooperation of the first abutting portion 321 and the positioning groove 222, under the condition that the door body needs to be reversely locked, the user screws the knob 200, and the purpose that the transmission end 220 drives the fixing buckle 300 to rotate can be realized through the cooperation of the first abutting portion 321 and the positioning groove 222, so that the circumferential relative movement between the knob 200 and the fixing buckle 300 can be prevented, in other words, the knob 200 can be placed to rotate relative to the fixing buckle 300, the abrasion between the knob 200 and the fixing buckle 300 is prevented, and the service lives of the knob 200 and the fixing buckle 300 are prolonged.

The first abutting portion 321 may be arranged as follows: the first abutting portion 321 extends from the outer side of the main body 310 away from the main body 310 along the direction of the axis of the mounting hole 311, and a portion of the protruding structure is disposed on one side of the first abutting portion 321 close to the axis of the mounting hole 311, a projection of the protruding structure along the axis of the mounting hole 311 is located inside the mounting hole 311, and the protruding portion is configured to abut against the driving end 220, in other words, the protruding portion is configured to cooperate with the positioning groove 222. Optionally, in the axial direction along the mounting hole 311, a convex structure may be provided at one end of the first abutting portion 321, so that the first abutting portion 321 substantially forms an L shape or a T shape; alternatively, the first abutting portion 321 may be formed to have a convex structure as a whole, so that the first abutting portion 321 is formed to have a substantially square shape or the like. In addition, the portion of the first abutting portion 321 located outside the positioning groove 222 may also extend into the mounting hole 311 along the radial direction of the mounting hole 311, so that the projection portion of the first abutting portion 321 located outside the positioning groove 222 along the axial direction of the mounting hole 311 is located inside the mounting hole 311. Thereby making part of the first abutting portion 321 located outside the driving end 220 in the radial direction thereof, and also making the first abutting portion 321 abut on the outer circumference of the driving end 220 in the radial direction.

In addition, the second elastic buckle 320 may further include a second abutting portion 322, and the second abutting portion 322 is fixed relative to the first abutting portion 321. The second abutting portion 322 is connected to the main body 310 and located on a side of the main body 310 away from the knob 200, the first abutting portion 321 is connected to a side of the second abutting portion 322 away from the main body, and the first abutting portion 321 is disposed on a side of the second abutting portion 322 close to an axis of the mounting hole 311. The second abutting portion 322 is at least partially disposed on the inner peripheral wall of the mounting hole 311. Under the condition that the transmission end 220 and the second elastic buckle 320 are mutually matched, the second abutting portion 322 abuts against the outer side of the transmission end 220 in the radial direction, in other words, the outer circumference of the transmission end 220 abuts against the second abutting portion 322, so that the positioning effect in the radial direction of the mounting hole 311 can be provided for the transmission end 220 through the second abutting portion 322. It should be noted that, in other embodiments, the third elastic buckle 330 may also be disposed on the second abutting portion 322; of course, in other embodiments, the third elastic buckle 330 may also be disposed on the first abutting portion 321 and the second abutting portion 322 at the same time, that is, the third elastic buckle 330 is disposed on the first abutting portion 321 and/or the second abutting portion 322.

At least part of the second abutting portion 322 is disposed inside the mounting hole 311, that is, part of the second abutting portion 322 may be disposed on the inner peripheral wall of the mounting hole 311, thereby facilitating the second abutting portion 322 to abut against the outer side of the transmission end 220; at this time, a part of the second abutting portion 322 is disposed on the side of the main body 310 away from the knob 200, so that the stability of the second elastic buckle 320 can be improved. Of course, in other embodiments, the entire second abutting portion 322 may be disposed inside the mounting hole 311.

Under the condition that the first abutting portion 321 and the second abutting portion 322 are arranged, the positioning function in the axial direction can be provided for the transmission end 220 through the first abutting portion 321, and the positioning function in the radial direction can be provided for the transmission end 220 through the second abutting portion 322, so that the transmission end 220 can be accurately installed at a specified position, and the matching accuracy of the fixing buckle 300 and the transmission end 220 is improved. It should be noted that the second abutting portion 322 is connected to the first abutting portion 321 on a side close to the mounting hole 311, and the first abutting portion 321 and the second abutting portion 322 can be connected by an integral molding method. Of course, the second abutting portion 322 and the first abutting portion 321 may be arranged at intervals to realize a relatively fixed arrangement.

Optionally, in order to enhance the strength of the positioning function provided by the second elastic buckle 320 to the driving end 220, in some embodiments of the present application, the second elastic buckle 320 is multiple, the multiple second elastic buckles 320 are arranged on the main body 310 at intervals, and the multiple second elastic buckles 320 are distributed around the axis of the mounting hole 311. Therefore, the plurality of second abutting portions 322 are arranged at intervals inside the mounting hole 311, and the plurality of first abutting portions 321 are arranged at intervals outside the mounting hole 311. Correspondingly, the outside of the driving end 220 can also be provided with a plurality of positioning grooves 222, and the first abutting portions 321 are respectively matched with the positioning grooves 222, so that the assembly accuracy between the driving end 220 and the fixing buckle 300 can be improved, and the assembly stability between the driving end 220 and the fixing buckle 300 can also be improved.

In addition, in some embodiments, for convenience of processing, a plurality of second elastic buckles 320 may be disposed around the axis of the mounting hole 311 at equal intervals, and correspondingly, a plurality of positioning slots 222 on the driving end 220 are disposed at equal intervals. Under the condition that the plurality of second elastic buckles 320 are matched with the transmission end 220, each first abutting portion 321 abuts against a bottom wall which is enclosed to form the positioning slot 222.

Of course, in other embodiments of the present application, in order to fix the driving end 220 with respect to the installation position of the holder buckle 300, that is, to make the driving end 220 have only one installation position with respect to the holder buckle 300, on the basis that the plurality of second elastic buckles 320 are arranged around the axis of the installation hole 311 at equal intervals, one of the second elastic buckles 320 may be eliminated, thereby making the distance between two of the second elastic buckles 320 larger. Correspondingly, based on the positioning grooves 222 in the above embodiments, one positioning groove 222 is not provided, so that the distance between two positioning grooves 222 is relatively large, and thus the second elastic fasteners 320 and the positioning grooves 222 can only adopt one matching mode to realize the matching of the knob 200 and the fixing fastener 300.

Of course, it should be understood that in other embodiments, in order to make the knob 200 and the fixing buckle 300 mutually fit in only one way, only the first abutting portion 321 of one of the second elastic buckles 320 may be eliminated, and correspondingly one of the positioning slots 222 may be eliminated. Alternatively, by reducing the length of one of the first abutting portions 321 and eliminating the corresponding positioning slot 222, when the plurality of first abutting portions 321 respectively abut against the bottom wall of the corresponding positioning slot 222, a gap is formed between the first abutting portion 321 with the reduced length and the transmission end 220. Or, the width of one of the first abutting portions 321 may be set to be greater than the widths of the other first abutting portions 321, and correspondingly, the width of one of the positioning slots 222 is set to be greater than the widths of the other positioning slots 222, so that only under the condition that the first abutting portion 321 with the greater width and the positioning slot 222 with the greater width are matched with each other, the remaining plurality of first abutting portions 321 can be matched with the remaining plurality of second abutting portions 322, thereby realizing the matching of the knob 200 and the fixing buckle 300. Or, the plurality of second elastic buckles 320 are arranged in a manner that the distances between the plurality of second elastic buckles 320 are different from each other, and correspondingly, the distances between the plurality of positioning grooves 222 are also different from each other, so that the knob 200 and the fixing buckle 300 can be matched in only one manner.

It should be noted that, in the embodiment of the present application, a manner of eliminating one positioning groove 222 and reducing the length of the corresponding first abutting portion 321 is taken as an example for description.

Referring to fig. 9 and 10, the third elastic buckle 330 is disposed at an end of at least one second elastic buckle 320. In other words, the third elastic buckle 330 is connected with at least one of the second elastic buckles 320. For example, the third elastic fastener 330 is connected to one of the second elastic fasteners 320, or the third elastic fastener 330 is connected to ends of a plurality of the second elastic fasteners 320, and the like.

In some embodiments of the present application, in order to improve the stability of the installation of the square shaft 400, optionally, the square shaft 400 is provided with a second limiting groove 410 along the periphery in the radial direction, and the second limiting groove 410 may be regarded as being provided around the square shaft 400. The second limiting groove, the third elastic buckle 330 are embedded in the second limiting groove 410, so that the square shaft 400 can be stably matched with the driving end 220.

It should be noted that, in some embodiments of the present application, in a case that the third elastic buckle 330 is embedded inside the second limiting groove 410, a certain gap may be formed between the third elastic buckle 330 and the second limiting groove 410. It should be understood that in other embodiments, the third elastic fastener 330 and the driving end 220 may jointly clamp the square shaft 400, that is, the driving end 220 provides an axial abutting action to the square shaft 400, and the cooperation of the third elastic fastener 330 and the second limiting groove 410 provides an axial abutting action to the square shaft 400, so as to provide a clamping action in an axial direction to the square shaft 400; the third elastic fastener 330 and the transmission end 220 clamp the square shaft 400 together, which can be regarded as that the third elastic fastener 330 abuts against the side wall of the second limiting groove 410, and one end of the square shaft 400 abuts against the transmission end 220, so that the purpose of clamping the square shaft 400 together through the third elastic fastener 330 and the transmission end 220 is achieved. Of course, it can also be regarded that the third elastic buckle 330 is accommodated inside the second limiting groove 410, and the third elastic buckle 330 contacts with the inner side wall of the second limiting groove 410; the end of the square shaft 400 abuts against the driving end 220, so that the third elastic fastener 330 provides a limiting function to the square shaft 400, and thus it can be seen that the square shaft 400 is clamped by the third elastic fastener 330 and the driving end 220 together.

Of course, in other embodiments of the present application, the third elastic fastener 330 may also abut against the outer circumference of the square shaft 400 in the radial direction to achieve the purpose of abutting against the square shaft 400, so as to achieve the purpose of fixing the square shaft 400 relative to the knob 200 through the friction force between the third elastic fastener 330 and the square shaft 400.

Optionally, in some embodiments of the present application, the third elastic buckle 330 includes two clamping portions 331, one of the clamping portions 331 is connected to half of the first abutting portions 321, and the other clamping portion 331 is connected to the other half of the first abutting portions 321, such that the two clamping portions 331 form a substantially semi-annular shape, and the two clamping portions 331 are disposed at intervals. Under the condition that the third elastic buckle 330 is engaged with the square shaft 400, the two clamping portions 331 are respectively located at two opposite sides of the square shaft 400, and the two clamping portions 331 are both located inside the second limiting groove 410 to respectively clamp the square shaft 400 together with the transmission end 220. It should be noted that, by providing the two clamping portions 331, the two clamping portions 331 are disposed at an interval, and in the process of assembling the square shaft 400 and the knob 200, under the condition that the second elastic fastener 320 is elastically deformed, the two clamping portions 331 are away from each other along the radial direction of the square shaft 400, so that the square shaft 400 is convenient to mount in the knob 200; thereby avoiding the situation that the third elastic buckle 330 forms a ring shape and cannot deform to avoid the square shaft 400. Of course, in other embodiments of the present application, the third elastic buckle 330 may also include a greater number of clamping portions 331, or the third elastic buckle 330 may also be formed in a C shape.

In addition, a guiding inclined surface 334 is disposed on a side of the third elastic buckle 330 away from the second elastic buckle 320, and the guiding inclined surface 334 is configured to be abutted by the square shaft 400 to push the third elastic buckle 330 to avoid the square shaft 400. In other words, during the process of installing the square shaft 400 into the transmission end 220, the end of the square shaft 400 abuts against the guiding inclined surface 334, the square shaft 400 applies a force to the guiding inclined surface 334, a partial component of the force causes the third elastic buckle 330 to move in a direction away from the square shaft 400, and under the action of the elastic deformation of the second elastic buckle 320, the third elastic buckle 330 moves away from the square shaft 400, so that the third elastic buckle 330 escapes from the square shaft 400. When the square shaft 400 moves to a certain position, the third elastic fastener 330 returns to the initial position and enters the second limiting groove 410 due to the elastic return action of the second elastic fastener 320, so that the purpose of clamping the square shaft 400 by the third elastic fastener 330 and the transmission end 220 is achieved.

It should be noted that in other embodiments of the present application, a guide slope 334 may also be disposed on a side of the third elastic buckle 330 near the mounting hole 311 to facilitate the detachment of the square shaft 400. In other words, during the process of detaching the square shaft 400, the square shaft 400 can abut against the guiding inclined surface 334, so that the third elastic buckle 330 is avoided from the square shaft 400, and the square shaft 400 is convenient to detach the transmission end 220.

In order to facilitate the matching between the transmission end 220 and the square shaft 400, the end of the transmission end 220 is provided with a mounting hole 221, and the end of the square shaft 400 extends into the mounting hole 221 to match with the transmission end 220. It should be noted that, in order to enable the transmission end 220 to drive the square shaft 400 to rotate under the condition of rotation, the mounting hole 221 may be in a prism shape, and the mounting hole 221 is adapted to the shape of the square shaft 400, so that the square shaft 400 can be clamped in the mounting hole 221. Of course, the fitting hole 221 may be provided in an oval shape or other shapes. In some embodiments of the present application, the end of the shaft 400 that mates with the mounting hole 221 is illustrated as being square. The square shaft 400 has four edges 420.

Optionally, a plurality of first grooves 2211 and a plurality of second grooves 2212 are formed on the inner circumferential wall of the assembly hole 221, the plurality of first grooves 2211 and the plurality of second grooves 2212 are arranged in a staggered manner, and the plurality of first grooves 2211 form a first position for accommodating the square shaft 400; the plurality of second grooves 2212 form a second position to receive the square shaft 400. In other words, when the square shaft 400 is installed in the first position, the plurality of edges 420 of the square shaft are received in the plurality of first grooves 2211 in a one-to-one correspondence; of course, in the case where the square shaft 400 is installed in the second position, the plurality of edges 420 of the square shaft are received in the plurality of second recesses 2212 in a one-to-one correspondence. Therefore, the square shaft 400 is matched with the assembling hole 221 in at least two modes, the initial positions of the square shaft 400 are at least two, the square shaft 400 can be selected as required under the condition that the required initial positions of the square shaft 400 are different, and the adaptability of the anti-locking structure 10 is improved.

Of course, in other embodiments of the present application, when the assembly hole 221 is a regular hexagon or a full octagon, it may be considered that the inner circumferential wall of the assembly hole 221 is provided with a plurality of first concave grooves 2211 and a plurality of second concave grooves 2212. Alternatively, in some embodiments of the present application, in order to increase the initial position of the square shaft 400, a plurality of third grooves, a plurality of fourth grooves, and the like may be additionally provided.

Correspondingly, in the embodiment of the present application, in order to facilitate the assembly of the square shaft 400, at least one first engaging groove 332 and at least one second engaging groove 333 are formed in the third elastic buckle 330. The first fitting slot 332 corresponds to one of the first grooves 2211, so that the square shaft 400 can be inserted into the first position through the first fitting slot 332; in other words, in the case where the square shaft 400 needs to be installed in the first position, the edge 420 of the square shaft 400 may correspond to the first fitting groove 332, so that the square shaft 400 may be installed in the first position under the guiding action of the first fitting groove 332. Similarly, the second fitting slot 333 corresponds to one of the second recesses 2212, so that the square shaft 400 is fitted into the second position through the second fitting slot 333; in other words, in the case where the square shaft 400 needs to be installed in the second position, the edge 420 of the square shaft 400 may correspond to the second engagement groove 333, and thus the square shaft 400 may be installed in the second position by the guide of the second engagement groove 333. In other words, the first and second fitting grooves 332, 333 may provide a pre-positioning for the installation of the square shaft 400, for example, in case that the initial position of the square shaft 400 needs to be installed into the first grooves 2211, only one of the edges 420 of the square shaft 400 needs to be installed corresponding to the first fitting groove 332, so that the edges 420 of the square shaft 400 can be installed into the first grooves 2211; similarly, in the case that the plurality of second recesses 2212 need to be installed at the initial position of the square shaft 400, only one of the edges 420 of the square shaft 400 needs to be installed corresponding to the second fitting groove 333, and the plurality of edges 420 of the square shaft 400 need to be installed in the plurality of second recesses 2212 instead.

In the case that the third elastic buckle 330 includes two clamping portions 331, both the clamping portions 331 may have a first engaging groove 332 and a second engaging groove 333. Optionally, in some embodiments of the present application, each of the clamping portions 331 has a plurality of first fitting grooves 332 and second fitting grooves 333 formed thereon, and the plurality of first fitting grooves 332 and the plurality of second fitting grooves 333 are staggered. Of course, in other embodiments, the plurality of first engagement grooves 332 and the plurality of second engagement grooves 333 in one of the clamping portions 331 may be eliminated. In other embodiments, at least one first engaging groove 332 may be formed in one of the clamping portions 331, and at least one second engaging groove 333 may be formed in the other clamping portion 331. In some embodiments, only one of the clamping portions 331 may have a first engagement groove 332 and a second engagement groove 333.

It should be noted that the guide slope 334 can be regarded as being opened on the side wall of the first fitting groove 332 and the side wall of the second fitting groove 333.

Alternatively, in the case of the driving end 220 and the fixing buckle 300 shown in fig. 7 and 8, the number of the first recess 2211 and the second recess 2212 is four, and similarly, the number of the first matching groove 332 and the second matching groove 333 is four.

Referring to fig. 2 and 3 in combination, in order to ensure stable assembly of the knob 200 and the holder buckle 300, in the embodiment of the present application, the holder buckle 300 may further include a first elastic buckle 340. The first elastic buckle 340 is disposed at the other side of the main body 310, in other words, the first elastic buckle 340 is disposed at one side of the main body 310 far away from the second elastic buckle 320. Inside transmission end 220 stretched into casing 100 from one side of casing 100, and stretched into the inside condition of mounting hole 311, first elasticity is detained 340 from the radial direction joint in transmission end 220 of transmission end 220 to it is spacing in the axial direction to provide transmission end 220, can ensure the ascending stability of transmission end 220 axial direction from this.

In addition, the transmission end 220 is provided with a first limiting groove 223 along the periphery in the radial direction, and the first elastic buckle 340 is matched with the first limiting groove 223, so that the transmission end 220 is clamped by the first elastic buckle 340 and the second elastic buckle 320 together.

It should be noted that the joint between the second elastic buckle 320 and the first elastic buckle 340 for clamping the driving end 220 can be regarded as: the first abutting portion 321 abuts against the end portion of the transmission end 220, and the first elastic buckle 340 abuts against the inner sidewall of the first limiting groove 223, so that the second elastic buckle 320 and the first elastic buckle 340 provide a clamping effect for the transmission end 220. Or, the first abutting portion 321 abuts against the end portion of the transmission end 220, the first elastic buckle 340 is accommodated in the first limiting groove 223, and the first elastic buckle 340 contacts with the inner sidewall of the first limiting groove 223, so that the first elastic buckle 340 limits the axial movement of the transmission end 220, and the second elastic buckle 320 and the first elastic buckle 340 clamp the transmission end 220 together.

In the counter lock structure 10, the driving end 220 of the knob 200 is engaged with the fixing buckle 300 through the first elastic buckle 340 on the fixing buckle 300, so that the stability between the fixing buckle 300 and the driving end 220 can be ensured, and the stable driving engagement of the internal parts of the counter lock structure 10 can be achieved. Since the first elastic buckle 340 can complete the matching between the driving end 220 and the fixing buckle 300, the matching between the knob 200 and the fixing buckle 300 can be omitted through screws or snap springs, which not only reduces the parts of the counter lock structure 10, but also simplifies the assembly process of the counter lock structure 10, thereby reducing the manufacturing cost of the counter lock structure 10. In other words, the counter lock structure 10 provided by the utility model can solve the technical problems of complex structure and high manufacturing cost in the prior art, thereby reducing the cost performance of the product.

Optionally, the first elastic buckle 340 includes a connecting portion 341 and a third abutting portion 342. One end of the connecting portion 341 is connected to the main body 310, the third abutting portion 342 is disposed at the other end of the connecting portion 341, and the third abutting portion 342 forms an included angle with the connecting portion 341, so that the first elastic buckle 340 is substantially L-shaped. The third supporting portion 342 extends into the first limiting groove 223 and supports against the driving end 220. In other words, the third abutting portion 342 can abut against the inner sidewall of the first limiting groove 223, so that the driving end 220 is clamped by the third abutting portion 342 and the first abutting portion 321.

Of course, the first elastic buckle 340 may also be disposed in other manners, for example, the connecting portion 341 is eliminated, so that the third abutting portion 342 directly extends from the main body 310.

In order to prevent the first elastic fastener 340 from being damaged by pressing the first elastic fastener 340 against the housing 100 when the fixing fastener 300 and the knob 200 are both mounted inside the housing 100, the main body 310 may further be provided with a receiving hole 312 coaxial with the mounting hole 311, and the diameter of the receiving hole 312 is larger than that of the mounting hole 311. At least part of the first elastic buckle 340 extends out of the mounting hole 311 and is disposed inside the receiving hole 312, so that the connecting portion 341 can be elastically deformed outward in the process that the driving end 220 is engaged with the first elastic buckle 340, thereby avoiding the driving end 220, and facilitating the engagement between the first limiting groove 223 on the driving end 220 and the third abutting portion 342; in addition, also in the case where the holder buckle 300 is installed inside the housing 100, the first elastic buckle 340 may be prevented from contacting the housing 100 by the contact of the holder buckle 300 with the housing 100, and thus the first elastic buckle 340 may be prevented from being damaged by collision.

Of course, in order to improve the clamping function provided by the first elastic buckle 340 to the transmission end 220, the first elastic buckle 340 may be provided in a plurality of numbers, and the plurality of first elastic buckles 340 are disposed around the mounting hole 311 at equal intervals.

Optionally, in some embodiments of the present application, in order to reduce the volume of the fixing buckle 300, and simultaneously avoid the plurality of second elastic buckles 320 and the plurality of first elastic buckles 340 occupying too much space, and simultaneously avoid the manufacturing of the second elastic buckles 320 and the manufacturing of the plurality of first elastic buckles 340 from affecting each other, the plurality of second elastic buckles 320 and the plurality of first elastic buckles 340 are disposed in a staggered manner. Of course, in other embodiments, the second elastic fastener 320 and the first elastic fastener 340 may also be disposed at intervals along the axial direction of the mounting hole 311, so as to avoid the mutual influence between the second elastic fastener 320 and the first elastic fastener 340.

Referring to fig. 2, the locking structure 10 further includes an orientation structure 350 and a resilient member 351. The orientation structure 350 is disposed on the retaining buckle 300, and the orientation structure 350 has at least two sets of engagement surfaces 352, each set of engagement surfaces 352 including two engagement surfaces 352 that are parallel to each other. The elastic member 351 is connected with the housing 100, and the elastic member 351 cooperates with two mating surfaces 352 in one of the sets of mating surfaces 352 to hold the orientation structure 350.

Alternatively, the directional structure 350 is illustrated as a square. In this case, the orientation structure 350 includes two sets of mating surfaces 352, with each set of mating surfaces 352 having two mating surfaces 352 that are parallel to each other, and with adjacent mating surfaces 352 being perpendicular to each other. Under the condition that the fixing buckle 300 rotates, the fixing buckle 300 drives the orientation structure 350 to rotate, the orientation structure 350 drives the matching surface 352 to rotate, so that the orientation structure 350 pushes the elastic part 351 to deform, and under the condition that the orientation structure 350 rotates by more than 45 degrees, the return acting force of the elastic part 351 assists in pushing the orientation structure 350 to rotate, so that the auxiliary acting force for assisting the rotation of the fixing buckle 300 is provided, and the rotation of the fixing buckle 300, the knob 200 and the square shaft 400 is facilitated. Moreover, the elastic member 351 may be set to be in one of the operating states of the anti-lock structure 10 when being engaged with any one of the engagement surfaces 352, for example, the elastic member 351 may be set to be in a state where the anti-lock structure 10 is locked when being engaged with one of the engagement surfaces 352, and the elastic member 351 may be set to be in a state where the anti-lock structure 10 is unlocked when being engaged with another one of the engagement surfaces 352, so that the knob 200 may be stopped at a position desired by a user by the elastic member 351 when the user screws the knob 200, thereby improving convenience.

Of course, in other embodiments, the orientation structure 350 may be provided in the shape of a regular hexagon or a regular octagon.

In summary, the anti-lock structure 10 and the lock provided in the embodiments of the present application can realize the transmission of the knob 200 and the square shaft 400 through the direct connection of the square shaft 400 and the knob 200, and realize the fixation between the square shaft 400 and the knob 200 through the fixing buckle 300. Therefore, the counter lock structure 10 can complete the counter lock function only by adopting the parts such as the shell 100, the knob 200, the fixing buckle 300, the square shaft 400 and the like, and the number of the components of the counter lock structure 10 is reduced compared with the existing counter lock device, so that the number of the components is reduced, the assembly steps are reduced, the cost can be reduced from the raw material, the manufacturing cost can be reduced from the assembly, and therefore, the cost of the counter lock structure 10 is lower, and the technical problems of complex structure, high manufacturing cost and reduction of the cost performance of the product in the prior art can be solved. Moreover, by the arrangement of the first and second grooves 2211 and 2212, the edge 420 of the square shaft 400 can be accommodated inside the first or second groove 2211 or 2212 according to the initial position required by the square shaft 400, so as to improve the universality of the counter lock structure 10. In addition, the arrangement of the first elastic buckle 340 can ensure that the knob 200 and the fixing buckle 300 are stably overlapped and matched with each other. Moreover, the driving end 220 of the knob 200 is engaged with the fixing buckle 300 through the first elastic buckle 340 on the fixing buckle 300, so that the stability between the fixing buckle 300 and the driving end 220 can be ensured, and the stable driving engagement of the internal parts of the counter lock structure 10 can be achieved. Since the first elastic buckle 340 can complete the matching between the driving end 220 and the fixing buckle 300, the matching between the knob 200 and the fixing buckle 300 can be omitted through screws or snap springs, which not only reduces the parts of the counter lock structure 10, but also simplifies the assembly process of the counter lock structure 10, thereby reducing the manufacturing cost of the counter lock structure 10. In other words, the counter lock structure 10 provided by the utility model can solve the technical problems of complex structure and high manufacturing cost in the prior art, thereby reducing the cost performance of the product.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (13)

1. The back locking structure is characterized by comprising a shell, a knob, a fixing buckle and a square shaft;

the fixing buckle is arranged inside the shell; the fixing buckle comprises a main body and a first elastic buckle; the main body is provided with a mounting hole, and the first elastic buckle is connected to the main body and is positioned in the mounting hole;

the knob is provided with a transmission end; the transmission end extends into the shell from one side of the shell and extends into the mounting hole; the first elastic buckle is clamped at the transmission end from the radial direction of the transmission end so as to provide limit in the axial direction for the transmission end;

the square shaft extends into the shell from the other side of the shell, and the square shaft extends into the mounting hole to be matched with the knob.

2. An anti-lock structure according to claim 1, wherein the transmission end has a first limiting groove formed on an outer circumference thereof in the radial direction, and the first elastic buckle is embedded in the first limiting groove.

3. An anti-lock structure according to claim 2, wherein the first elastic buckle includes a connecting portion and a third abutting portion; one end of the connecting part is connected to the main body, and the third abutting part is connected with the connecting part and forms an included angle with the connecting part; the third abutting part is embedded into the first limiting groove.

4. An anti-lock structure according to claim 1, wherein the fixing buckle further comprises a second elastic buckle and a third elastic buckle;

the second elastic buckle is arranged on one side of the main body far away from the first elastic buckle, and the transmission end penetrates through the mounting hole and abuts against the second elastic buckle;

the third elastic buckle is arranged at one end, far away from the main body, of the second elastic buckle, and the third elastic buckle is matched with the square shaft.

5. An anti-lock structure according to claim 4, wherein the second elastic buckle comprises a first abutting portion and a second abutting portion, the second abutting portion is connected to the main body and is located on one side of the main body away from the first elastic buckle; the first abutting part is arranged on one side, close to the axis of the mounting hole, of the second abutting part, and the transmission end abuts against the first abutting part;

the third elastic buckle is arranged on the first abutting part and/or the second abutting part.

6. An anti-lock structure according to claim 5, wherein a positioning groove is formed at an end of the transmission end, and the first abutting portion is embedded in the positioning groove and abuts against a bottom wall surrounding the positioning groove.

7. An anti-lock structure according to claim 4, wherein the second elastic fastener is a plurality of second elastic fasteners, and the plurality of second elastic fasteners are arranged at intervals and distributed around the axis of the mounting hole; the third elastic buckle is arranged at the end part, far away from the main body, of at least one second elastic buckle.

8. An anti-lock structure according to claim 4, wherein the transmission end is provided with a fitting hole, and the square shaft extends into the fitting hole to be matched with the transmission end;

a plurality of first grooves and a plurality of second grooves are formed in the inner peripheral wall of the assembling hole, and the first grooves and the second grooves are arranged in a staggered mode; the first grooves form a first position for accommodating the square shaft; the plurality of second grooves form a second position for receiving the square shaft.

9. An anti-lock structure according to claim 8, wherein the third elastic buckle is provided with at least one first matching groove and at least one second matching groove; the first matching groove corresponds to one of the first grooves, so that the square shaft passes through the first matching groove and is installed in the first position; the second matching groove corresponds to one of the second grooves, so that the square shaft passes through the second matching groove and is installed in the second position.

10. An anti-lock structure according to claim 4, wherein the square shaft is provided with a second limiting groove along the periphery in the radial direction; the third elastic buckle is embedded into the second limiting groove.

11. An anti-lock structure according to claim 4, wherein a side of the third elastic buckle far away from the second elastic buckle is provided with a guide inclined surface, and the guide inclined surface is configured to be abutted by the square shaft to push the third elastic buckle to avoid the square shaft.

12. An anti-lock arrangement according to claim 1, further comprising an orientation arrangement and a resilient member; the orientation structure is arranged on the fixing buckle and is provided with at least two groups of matching surface groups, and each group of matching surface group comprises two matching surfaces which are parallel to each other; the elastic piece is connected with the shell, and the elastic piece is matched with two matching surfaces in one matching surface group to clamp the orientation structure.

13. A lock comprising an anti-lock arrangement as claimed in any one of claims 1 to 12.

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