Lock body and lock

Abstract

The utility model relates to the technical field of locks, and discloses a lock body and a lock, the lock body comprises a protective shell, a pawl, a lock hook and an elastic piece; the protective shell comprises a back plate and a first limiting plate; the pawl comprises a first main body part, a limiting part and a rotation stopping part; the lock hook is provided with a locking surface; the elastic piece is provided with a first connecting part and a second connecting part; when the lock body is in a full-locking state, the limiting part abuts against the locking face and limits the lock hook to rotate around the second axis in the second direction, and the rotation stopping part abuts against the first limiting plate, so that the first limiting plate can limit the pawl to rotate around the first axis in the first direction; according to the lock body provided by the utility model, through the first limiting plate, the limiting part and the rotation stopping part, the lock body can be prevented from being automatically unlocked when the lock hook is subjected to impact excitation, and the safety and the reliability of the lock body are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lockset, especially a lock body and lock. BACKGROUND

[0002] The lock mainly includes a lock body and a lock catch, and the lock body is the main component of the lock. Figure 1 As shown in the prior art lock body structure, the abutting portion (33) and the anti-rotation portion (34) of the lock hook (3) form a limiting groove (331), and the limiting portion (22) of the pawl (2) has a limiting surface (221) and a rotation-stopping lap surface (222) connected in sequence. Figure 1 When the lock hook is impacted in the counterclockwise direction, the anti-rotation portion of the lock hook will transmit the impact to the rotation-stopping lap surface of the pawl, which will cause the pawl to overcome the spring force in the counterclockwise direction and move in the clockwise direction, resulting in the separation of the pawl and the lock hook. UTILITY MODEL CONTENTS

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art, and provides a lock body and a lock with the lock body.

[0004] In order to achieve the above object, the utility model provides a lock body, the lock body includes protection shell, pawl, lock hook and elastic piece, protection shell includes backplate and first limit board, first limit board fixedly connected in backplate, pawl includes first main part, limit portion and rotation stop portion, first main part rotationally connected in backplate, limit portion fixedly connected in first main part, rotation stop portion fixedly connected in first main part and with limit portion interval arrangement, lock hook rotationally connected in backplate, lock hook has locking surface, elastic piece has first connecting portion and second connecting portion, first connecting portion is connected with pawl and can make pawl rotate around first axis in first direction, second connecting portion is connected with lock hook and can make lock hook rotate around second axis in second direction, first axis is parallel with second axis, second direction is opposite with first direction, wherein, when the lock body is in full lock state, limit portion abuts on locking surface and limits lock hook rotates around second axis in second direction, rotation stop portion abuts on first limit board, so that first limit board can limit pawl rotates around first axis in first direction.

[0005] In some embodiments, when the lock hook rotates around the first axis in the first direction, the locking surface can not transmit the force to make the pawl rotate around the second axis in the second direction.

[0006] In some embodiments, the locking surface is in a planar structure.

[0007] In some embodiments, the limit portion has a limit surface for abutting on the locking surface, and the limit surface is in an arc surface structure.

[0008] In some embodiments, the center of the limit surface is located on the first axis.

[0009] In some embodiments, the pawl further includes an unlocking portion fixedly connected to the first main portion, and the unlocking portion is provided with an unlocking hole for connecting an unlocking mechanism.

[0010] In some embodiments, a first avoiding slot is formed between the limit portion and the rotation stop portion for avoiding the lock hook.

[0011] In some embodiments, the first limit board is provided with a second avoiding slot for avoiding the lock hook.

[0012] In some embodiments, the protective shell further comprises a second limiting plate fixedly connected to the back plate and located at one side of the lock hook; the lock hook comprises a second main body part and a locking part, the locking part is fixedly connected to the second main body part, the second main body part has the locking surface, and the locking part and the locking surface are connected in sequence along the second direction; when the lock body is in the unlocking state, the second main body part abuts against the second limiting plate, so that the second limiting plate can limit the rotation of the lock hook about the second axis along the second direction, and the limiting part abuts against the locking part, so that the locking part can limit the rotation of the pawl about the first axis along the first direction.

[0013] In some embodiments, the locking part is provided with a limiting groove; when the lock body is in the half-locked state, part of the limiting part is located in the limiting groove and abuts against the inner wall of the limiting groove.

[0014] In some embodiments, the lock body further comprises a first rotating shaft and a second rotating shaft, the pawl is rotatably connected to the back plate through the first rotating shaft, the lock hook is rotatably connected to the back plate through the second rotating shaft, the first axis is the central axis of the first rotating shaft, and the second axis is the central axis of the second rotating shaft; the first main body part is provided with a first through hole, and the pawl is connected to the first rotating shaft through the first through hole; the second main body part is provided with a second through hole, and the lock hook is connected to the second rotating shaft through the second through hole; the back plate is provided with a third through hole and a fourth through hole, and the first rotating shaft is connected to the back plate through the third through hole, and the second rotating shaft is connected to the back plate through the fourth through hole.

[0015] In some embodiments, the lock body further comprises a bottom plate connected to the first limiting plate and located at one side of the back plate, and the pawl, the lock hook and the elastic member are arranged between the bottom plate and the back plate.

[0016] In the second aspect, the utility model further provides a lock, the lock comprises the lock body according to any one of the above, further include lock catch;The back plate is provided with first import slot;The lock hook is provided with limit slot;Wherein, when the lock body is in the full-locked state, the first import slot and the limit slot form the locking slot that limit the lock catch moves.

[0017] Compared with the prior art, the lock body has the beneficial effects that (1) the first limiting plate is arranged on the protection shell, the limiting portion for limiting the rotation of the hook in the second direction and the rotation-stopping portion for being limited by the first limiting plate to rotate the pawl in the first direction are arranged on the pawl, when the hook is impacted in the first direction under the full locking state of the lock body, if the impact transmitted to the pawl from the hook cannot overcome the elastic force of the elastic member and drive the pawl to rotate in the second direction, the limiting portion of the pawl continues to abut against the limiting surface of the hook and keeps the lock body in the full locking state, if the impact transmitted to the pawl from the hook can overcome the elastic force of the elastic member and drive the pawl to rotate in the second direction, since the rotation-stopping portion can be abutted against by the first limiting plate, when the impact on the pawl is smaller than the elastic force of the elastic member, the elastic force will drive the pawl to rotate in the first direction through the first connecting portion until the rotation-stopping portion abuts against the first limiting plate to make the limiting portion return to the locking position, when the impact on the hook is smaller than the elastic force of the elastic member, the elastic force will drive the hook to rotate in the second direction through the second connecting portion until the limiting surface is abutted against by the limiting portion which is in the locking position, and the lock body still keeps in the full locking state, therefore, the lock body provided by the utility model can prevent the lock body from being automatically unlocked when the hook is impacted, and the safety and reliability of the lock body are improved.

[0018] (2) the lock body provided by the utility model can solve the problem of automatic unlocking without increasing additional parts, has simple structure and low production cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure diagram of the lock body of the prior art;

[0020] Figure 2 is an explosion view of the lock body provided by the utility model embodiment;

[0021] Figure 3 is a structure diagram of the lock body in the full locking state provided by the utility model embodiment;

[0022] Figure 4 is a structure diagram of the lock body in the half locking state provided by the utility model embodiment;

[0023] Figure 5 is a structure diagram of the lock body in the unlocking state provided by the utility model embodiment;

[0024] Figure 6 is a structure diagram of the protection shell provided by the utility model embodiment;

[0025] Figure 7 is a structure diagram of the pawl provided by the utility model embodiment;

[0026] Figure 8 is a structural schematic view of a lock hook provided by an embodiment of the present utility model;

[0027] Figure 9 is a structural schematic view of an elastic member provided by an embodiment of the present utility model;

[0028] Figure 10 is a structural schematic view of a lock provided by an embodiment of the present utility model;

[0029] Figure 11 is a structural schematic view of a lock in a full locking state provided by an embodiment of the present utility model.

[0030] In the figure, 1, protective shell; 11, back plate; 12, first limiting plate; 13, second limiting plate; 111, third through hole; 112, fourth through hole; 113, first lead-in groove; 121, second avoiding groove;

[0031] 2, pawl; 21, first main body part; 22, limiting part; 23, rotation stopping part; 24, unlocking part; 25, first avoiding groove; 211, first through hole; 221, limiting surface; 241, unlocking hole;

[0032] 3, lock hook; 31, second main body part; 32, locking part; 311, locking surface; 312, second through hole; 313, limiting groove; 321, limiting groove;

[0033] 4, elastic member; 41, first connecting part; 42, second connecting part;

[0034] 5, first rotating shaft;

[0035] 6, second rotating shaft;

[0036] 7, bottom plate; 71, second lead-in groove;

[0037] 100, lock catch;

[0038] 200, locking groove;

[0039] N, first direction; S, second direction; V, third direction; W, fourth direction. DETAILED DESCRIPTION

[0040] The specific embodiments of the present utility model are described in further detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0041] In the description of the utility model, it is understood that the directions or position relations indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0042] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or a specific number of the technical features indicated.

[0043] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0044] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0045] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as understood by a person skilled in the art to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application; the terms "include" and "have" in the specification and claims of the present application and their any variants are intended to cover non-exclusive inclusion.

[0046] Reference within this application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another.

[0047] First aspect

[0048] As Figures 2-9 shown in the utility model embodiment, a lock body preferably comprises a protective shell 1, a pawl 2, a lock hook 3 and an elastic member 4.

[0049] The protective shell 1 comprises a back plate 11 and a first limiting plate 12, and the first limiting plate 12 is fixedly connected to the back plate 11; the pawl 2 comprises a first main body part 21, a limiting part 22 and a rotation-stopping part 23, the first main body part 21 is rotationally connected to the back plate 11, the limiting part 22 is fixedly connected to the first main body part 21, and the rotation-stopping part 23 is fixedly connected to the first main body part 21 and is arranged in a spaced-apart manner with the limiting part 22; the lock hook 3 is rotationally connected to the back plate 11, and the lock hook 3 has a locking surface 311; the elastic member 4 has a first connecting part 41 and a second connecting part 42, the first connecting part 41 is connected to the pawl 2 and can promote the pawl 2 to rotate around the first axis in the first direction N, and the second connecting part 42 is connected to the lock hook 3 and can promote the lock hook 3 to rotate around the second axis in the second direction S, the first axis is parallel to the second axis, and the second direction S is opposite to the first direction N.

[0050] When the lock body is in the fully locked state, the limiting part 22 abuts against the locking surface 311 and limits the lock hook 3 from rotating around the second axis in the second direction S, and the rotation-stopping part 23 abuts against the first limiting plate 12, so that the first limiting plate 12 can limit the pawl 2 from rotating around the first axis in the first direction N.

[0051] According to the technical scheme, the first limiting plate 12 is arranged on the protection shell 1, the limiting part 22 for limiting the rotation of the locking hook 3 along the second direction S and the rotation-stopping part 23 for being limited by the first limiting plate 12 to rotate the pawl 2 along the first direction N are arranged on the pawl 2; when the locking hook 3 is impacted and excited along the first direction N in the full-lock state of the lock body, if the excitation transmitted from the locking hook 3 to the pawl 2 cannot overcome the elastic force of the elastic member 4 and drive the pawl 2 to rotate along the second direction S, the limiting part 22 of the pawl 2 continues to abut against the limiting surface 221 of the locking hook 3 and keeps the lock body in the full-lock state; if the excitation transmitted from the locking hook 3 to the pawl 2 can overcome the elastic force of the elastic member 4 and drive the pawl 2 to rotate along the second direction S, since the rotation-stopping part 23 can be abutted against the first limiting plate 12, when the excitation on the pawl 2 is smaller than the elastic force of the elastic member 4, the elastic force drives the pawl 2 to rotate along the first direction N through the first connecting part 41 until the rotation-stopping part 23 abuts against the first limiting plate 12 to make the limiting part 22 return to the locking position, when the excitation on the locking hook 3 is smaller than the elastic force of the elastic member 4, the elastic force drives the locking hook 3 to rotate along the second direction S through the second connecting part 42 until the locking surface 311 is abutted against the limiting part 22 in the locking position, and the lock body still keeps in the full-lock state; therefore, the first limiting plate 12, the limiting part 22 and the rotation-stopping part 23 can prevent the lock body from being automatically unlocked when the locking hook 3 is impacted and excited, and improve the safety and reliability of the lock body.

[0052] The lock body provided by the utility model can solve the problem of automatic unlocking without additional parts, has simple structure and low production cost.

[0053] In the embodiment, the first direction N is counterclockwise, and the second direction S is clockwise.

[0054] In the embodiment, the elastic member 4 includes a torsion spring, and the first connecting part 41 and the second connecting part 42 are arranged on two ends of the torsion spring.

[0055] In other embodiments, the elastic member 4 includes two torsion springs, and the first connecting part 41 and the second connecting part 42 are arranged on the two torsion springs.

[0056] Of course, a compression spring, a tensile spring or other elastic member 4 can be used to realize the functions of driving the pawl 2 to rotate along the first direction N around the first axis and driving the locking hook 3 to rotate along the second direction S around the second axis, and other elastic members 4 realizing the functions in other ways should be considered as the protection scope of the utility model.

[0057] Referring to Figures 3-6The first limiting plate 12 provided by the embodiment of the utility model is equipped with a second avoiding groove 121 for avoiding the lock hook 3. The second avoiding groove 121 provides an avoiding space for the lock hook 3 in the rotating process, so that the lock hook 3 can smoothly complete the locking and unlocking actions without interfering with the first limiting plate 12.

[0058] The protective shell 1 further comprises a second limiting plate 13 fixedly connected to the back plate 11 and located on one side of the lock hook 3.

[0059] The back plate 11 is equipped with a first leading-in groove 113; the lock hook 3 is equipped with a limiting groove 313; wherein, when the lock body is in the full locking state, the first leading-in groove 113 and the limiting groove 313 form a locking groove 200 for limiting the movement of the lock catch 100.

[0060] When the lock hook 3 rotates around the first axis in the first direction N, the locking surface 311 can not transmit the force for promoting the pawl 2 to rotate around the second axis in the second direction S. That is, the shape structure of the locking surface 311 meets that, when the lock hook 3 rotates in the first direction, the locking surface 311 does not contact the limiting part 22 or does not transmit the force for promoting the pawl 2 to rotate in the second direction S.

[0061] Referring to Figures 3-5 , and Figures 7-8 The locking surface 311 provided by the embodiment of the utility model is in a plane structure. In the manufacturing process, compared with the locking surface 311 with a complex shape, the plane structure of the locking surface 311 has a simpler processing technology, a lower processing difficulty and a lower manufacturing cost. In the large-scale production process, the plane structure can also better ensure the consistency of the quality and size precision of the locking surface 311 of each lock body product, which helps to improve the overall quality stability of the product. When the locking surface 311 rotates around the first axis in the first direction N, the locking surface 311 does not contact the limiting part 22.

[0062] In other some embodiments, the locking surface 311 can also be in an arc surface structure, an inner concave surface structure, a stepped surface structure, a wave-shaped surface structure or any shape structure that can not transmit the force for promoting the pawl 2 to rotate around the second axis in the second direction S when the lock hook 3 rotates around the first axis in the first direction N, which is not limited herein.

[0063] In the embodiment, the limiting portion 22 has a limiting surface 221 for abutting against the locking surface 311, and the limiting surface 221 has an arc surface structure. During the unlocking and locking operations of the lock body, the relative movement between the arc surface limiting surface 221 and the planar locking surface 311 is smoother. Compared with the possible jamming phenomenon between the planar limiting surface 221 and the planar locking surface 311, the curved surface shape of the arc surface limiting surface 221 can guide the smooth sliding of the limiting portion 22 on the surface of the locking surface 311, reduce the friction and wear, make the operation more convenient, reduce the noise generated by friction, and improve the comfort and experience of the user when using the lock body. At the same time, the arc surface limiting surface 221 also has better adaptability and can compensate for the possible slight errors in the manufacturing and assembly process of the lock body to a certain extent. Since the planar locking surface 311 is difficult to be absolutely flat in actual production, and there may be slight size differences between different batches of products, the arc surface limiting surface 221 can realize good matching effect by local elastic deformation and self-adaptive adjustment when contacting with the planar locking surface 311 due to its curved surface characteristics. This makes the manufacturing precision requirement of the parts relatively lower during large-scale production of the lock body, improves the product qualification rate and production efficiency, and also enhances the adaptability of the lock body to different use conditions and environments, and widens the application range of the product.

[0064] In other embodiments, the limiting surface 221 can also have any shape structure such as a planar structure, a concave surface structure, a stepped surface structure, a wavy surface structure, etc., which is not limited herein.

[0065] In the embodiment, the center of the limiting surface 221 is located on the first axis. In this way, in the fully locked state of the lock body, the distance from the contact point of the limiting portion 22 and the locking surface 311 to the first axis always remains constant, which means that when the lock hook is impacted by external force, no matter how the impact direction changes, the force of the limiting portion 22 on the lock hook 3 can always be effectively transmitted and dispersed through the first axis, which helps to better ensure that the lock body can maintain a stable fully locked state under various working conditions, enhances the ability of the lock body to resist external interference, avoids abnormal rotation of the lock hook caused by external force, and further improves the safety and reliability of the lock body.

[0066] In the embodiment, the pawl 2 further includes an unlocking portion 24 fixedly connected to the first main body portion 21, and the unlocking portion 24 is provided with an unlocking hole 241 for connecting an unlocking mechanism. The unlocking mechanism unlocks the lock body by driving the unlocking portion 24 to move around the first axis in the second direction S through the unlocking hole 241, the unlocking portion 24 drives the pawl 2 as a whole to move around the first axis in the second direction S against the elastic force of the elastic member 4, the limiting portion 22 of the pawl 2 is out of the movement track of the locking surface 311 and no longer limits the movement of the lock hook 3, and the lock hook 3 rotates around the second axis and in the second direction S under the action of the elastic force of the elastic member 4 to perform the unlocking action.

[0067] A first avoiding groove 25 is formed between the limiting portion 22 and the rotation-stopping portion 23 for avoiding the lock hook 3. The first avoiding groove 25 can guarantee the smoothness of the rotation of the lock hook 3. In the unlocking operation of the lock body, the lock hook 3 needs to rotate around the second axis, and the first avoiding groove 25 can provide sufficient rotation space for the lock hook 3 to avoid the hindering of the unlocking action of the pawl 2 on the lock hook 3. Specifically, in the process of fast unlocking of the lock body, when the limiting portion 22 of the pawl 2 is no longer limited to the movement track of the locking surface 311 by rotating the pawl 2 around the first axis and in the second direction S by the unlocking mechanism, the lock hook 3 rotates around the second axis and in the second direction S to perform the unlocking action under the action of the elastic force of the elastic member 4, and the first avoiding groove 25 can avoid the rotation of the lock hook 3 to avoid the hindering of the unlocking action of the pawl 2 on the lock hook 3.

[0068] The lock hook 3 comprises a second main body portion 31 and a locking portion 32, the locking portion 32 is fixedly connected to the second main body portion 31, the second main body portion 31 has a locking surface 311, and the locking portion 32 and the locking surface 311 are sequentially connected in the second direction S; wherein, when the lock body is in the unlocking state, the second main body portion 31 abuts against the second limiting plate 13, so that the second limiting plate 13 can limit the rotation of the lock hook 3 around the second axis in the second direction S; and the limiting portion 22 abuts against the locking portion 32, so that the locking portion 32 can limit the rotation of the pawl 2 around the first axis in the first direction N.

[0069] In the embodiment, the limiting groove 313 is arranged on the second main body portion 31.

[0070] The locking portion 32 is provided with a limiting groove 321; wherein, when the lock body is in the half-locked state, part of the limiting portion 22 is located in the limiting groove 321 and abuts against the inner wall of the limiting groove 321. By arranging the limiting groove 321 on the locking portion 32, the switching between the full-locked state, the half-locked state and the unlocking state of the lock body can be realized, the structure is simple, the production and manufacturing consumables are less, and resources are saved.

[0071] Referring to Figures 2-8 The lock body provided in the embodiment of the utility model further comprises a first rotating shaft 5 and a second rotating shaft 6, the pawl 2 is rotatably connected to the back plate 11 through the first rotating shaft 5, and the lock hook 3 is rotatably connected to the back plate 11 through the second rotating shaft 6, the first axis is the central axis of the first rotating shaft 5, and the second axis is the central axis of the second rotating shaft 6.

[0072] The first main body portion 21 is provided with a first through hole 211, and the pawl 2 is connected to the first rotating shaft 5 through the first through hole 211.

[0073] The second main body part 31 is provided with a second through hole 312, and the lock hook 3 is connected to the second rotating shaft 6 through the second through hole 312.

[0074] The back plate 11 is provided with a third through hole 111 and a fourth through hole 112, the first rotating shaft 5 is connected to the back plate 11 through the third through hole 111, and the second rotating shaft 6 is connected to the back plate 11 through the fourth through hole 112.

[0075] The specific connection mode of the pawl 2 to the back plate 11 through the first rotating shaft 5 can adopt the connection mode that the first rotating shaft 5 is rotatably connected to the back plate 11 and can rotate around the central axis of the first rotating shaft 5, and the pawl 2 is fixedly connected to the first rotating shaft 5 and can move with the first rotating shaft 5, or the connection mode that the first rotating shaft 5 is fixedly connected to the bottom plate 7, and the pawl 2 is rotatably connected to the first rotating shaft 5 and can rotate around the first rotating shaft 5.

[0076] The specific connection mode of the lock hook 3 to the back plate 11 through the second rotating shaft 6 refers to the specific connection mode of the pawl 2 to the bottom plate 7 through the first rotating shaft 5.

[0077] The lock body further comprises a bottom plate 7 connected to the first limiting plate 12 and located on one side of the back plate 11, and the pawl 2, the lock hook 3 and the elastic member 4 are arranged between the bottom plate 7 and the back plate 11. The bottom plate 7 is provided with a second guide-in groove 71 corresponding to the position of the first guide-in groove 113.

[0078] The second aspect

[0079] Referring to Figures 10-11 The utility model also provides a kind of lock, and lock includes the lock body of any one of the above, further include lock catch 100;Wherein, when lock body is in full lock state, first guide-in groove 113 and limit groove 313 form the locking groove 200 that limit lock catch 100 moves.

[0080] In the embodiment, the lock catch 100 is a clasp with a notch, and at least part of the clasp can be received in the locking groove 200.

[0081] In other embodiments, the lock catch 100 can be any structure that at least part of it can be received in the locking groove 200, which is not limited here.

[0082] The full lock state of the lock body corresponds to the full lock state of the lock, the half lock state of the lock body corresponds to the half lock state of the lock, and the unlocking state of the lock body corresponds to the unlocking state of the lock.

[0083] The process of the lock from the unlocking state to the half-locking state is as follows: the second main body part 31 of the lock hook 3 abuts against the second limiting plate 13, the limiting part 22 of the pawl 2 is located outside the limiting groove 321 and abuts against the outer wall of the locking part 32 of the lock hook 3, at this time, the lock body is in the unlocking state, the lock catch 100 is moved towards the groove bottom of the first guide-in groove 113 of the back plate 11 along the third direction V, the lock catch 100 enters the limiting groove 313 of the lock hook 3 and abuts against the inner wall of the limiting groove 313 to push the lock hook 3 to move along the first direction N around the second axis, the locking part 32 pushes the pawl 2 to move along the second direction S around the first axis until the limiting part 22 and the locking part 32 are separated, then the limiting part 22 rotates around the first axis along the first direction N under the action of the elastic force of the elastic member 4 and makes part of the limiting part 22 enter the limiting groove 321 and abut against the inner wall of the limiting groove 321, that is, the limiting part 22 and the limiting groove 321 are engaged to lock the lock body in the half-locking state.

[0084] The process of the lock from the half-locking state to the full-locking state is as follows: part of the limiting part 22 of the pawl 2 is located in the limiting groove 321 and abuts against the inner wall of the limiting groove 321, at this time, the lock body is in the half-locking state; the lock catch 100 is moved towards the groove bottom of the first guide-in groove 113 of the back plate 11 along the third direction V, the lock catch 100 abuts against the inner wall of the limiting groove 313 and pushes the lock hook 3 to move along the first direction N around the second axis, the inner wall of the limiting groove 321 pushes the pawl 2 to move along the second direction S around the first axis until the limiting part 22 is separated from the limiting groove 321, after the limiting part 22 is separated from the limiting groove 321, the limiting part 22 moves along the first direction N around the first axis under the action of the elastic force of the elastic member 4 and abuts against the locking surface 311 to lock the lock body in the full-locking state.

[0085] The third direction V is a movement direction towards the groove bottom of the first guide-in groove 113, that is, the third direction V is a locking direction of the lock catch 100; the fourth direction W is a movement direction away from the groove bottom of the first guide-in groove 113, that is, the fourth direction M is an unlocking direction of the lock catch, and the third direction V and the fourth direction W are opposite directions.

[0086] The above only describes preferred embodiments of the utility model, and it should be noted that, for ordinary technical personnel in the technical field, without departing from the technical principle of the utility model, some improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection range of the utility model.

Claims

1. A lock body, characterized in that The utility model relates to a lock, including: Protective shell (1), it includes backboard (11) and first limit board (12), first limit board (12) fixedly connected to backboard (11), Pawl (2), it includes first body part (21), limit part (22) and rotation stop part (23), first body part (21) rotationally connected to backboard (11), limit part (22) fixedly connected to first body part (21), rotation stop part (23) fixedly connected to first body part (21) and with limit part (22) interval arrangement, Lock hook (3) rotationally connected to backboard (11), lock hook (3) has locking surface (311), Elastic member (4) has first connecting part (41) and second connecting part (42), first connecting part (41) is connected with pawl (2) and can make pawl (2) rotate around first axis in first direction (N), second connecting part (42) is connected with lock hook (3) and can make lock hook (3) rotate around second axis in second direction (S), first axis is parallel with second axis, second direction (S) is opposite to first direction (N), Wherein, when the lock body is in full lock state, limit part (22) abuts on locking surface (311) and limits lock hook (3) rotates around second axis in second direction (S), rotation stop part (23) abuts on first limit board (12), so that first limit board (12) can limit pawl (2) rotates around first axis in first direction (N).

2. The lock body of claim 1, wherein, When lock hook (3) rotates around first axis in first direction (N), locking surface (311) can not transmit the force that makes pawl (2) rotate around second axis in second direction (S).

3. The lock body of claim 1, wherein, Locking surface (311) is the plane structure, limit part (22) has limit surface (221) for abutting on locking surface (311), limit surface (221) is the arc surface structure.

4. The lock body of claim 3, wherein, The center of the limit surface (221) is located on the first axis.

5. The lock body of claim 1, wherein, The pawl (2) further includes an unlocking portion (24) fixedly connected to the first body portion (21), and the unlocking portion (24) is provided with an unlocking hole (241) for connecting an unlocking mechanism.

6. The lock body of claim 1, wherein, The limit part (22) and the rotation stop part (23) form a first avoiding groove (25) for avoiding the lock hook (3) therebetween.

7. The lock body of claim 1, wherein The protective shell (1) further includes a second limit board (13) fixedly connected to the backboard (11) and located on one side of the lock hook (3); The lock hook (3) includes a second body portion (31) and a locking portion (32), the locking portion (32) is fixedly connected to the second body portion (31), the second body portion (31) has the locking surface (311), and the locking portion (32) and the locking surface (311) are sequentially connected in the second direction (S). When the lock body is in the unlocking state, the second main body part (31) abuts against the second limiting plate (13) to enable the second limiting plate (13) to limit the rotation of the lock hook (3) along the second direction (S) about the second axis, and the limiting part (22) abuts against the locking part (32) to enable the locking part (32) to limit the rotation of the pawl (2) along the first direction (N) about the first axis.

8. The lock body of claim 7, wherein, The locking part (32) is provided with a limiting groove (321). When the lock body is in the half-locking state, part of the limiting part (22) is located in the limiting groove (321) and abuts against the inner wall of the limiting groove (321).

9. The lock body of claim 1, wherein, The back plate (11) is provided with a first guide-in groove (113).

10. A lock characterised in that, The lock body according to any one of claims 1-9 further comprises a lock catch (100); The back plate (11) is provided with a first guide-in groove (113). The lock hook (3) is provided with a limiting groove (313). When the lock body is in the full-locking state, the first guide-in groove (113) and the limiting groove (313) form a locking groove (200) for limiting the movement of the lock catch (100).

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