Latching and locking structures

Abstract

A latch for releasably locking a first object to a second object. The latch comprises a housing for securing to the first object, a locking member disposed in the housing, pivotable relative to the housing along a transverse axis between a locking position in which a locking portion of the locking member can extend from the housing and an unlocked position in which the locking portion is retracted into the housing, and an operating member at least partially disposed in the housing, the operating member being longitudinally movable relative to the housing between a first position and a second position, the direction of longitudinal movement being substantially perpendicular to the transverse axis, wherein the operating member is coupled to the locking member such that movement of the operating member is converted into a pivoting movement of the locking member, the locking member pivoting from the locking position to the unlocked position when the operating member is longitudinally moved forward from the first position to the second position. A locking arrangement is also disclosed.

Description

TECHNICAL FIELD

[0001] The present application relates to a latch and a locking structure comprising the same. BACKGROUND

[0002] A latch is a common locking or fastening device which can lock and release one object relative to another object.

[0003] Generally, a latch comprises a movable component which can be rotated or moved to achieve its locking and releasing process. Therefore, the latch must occupy a certain active space to ensure that its function can be normally implemented. However, with the continuous improvement of product requirements in modern industry, the latch needs to occupy less space. In particular, in some use environments, the latch needs to occupy as little space as possible in a certain direction. Therefore, so-called ultra-thin latches are needed to meet this use requirement. On the other hand, considering the production cost and the convenience of installation and use, it is expected that the latch has as few components as possible. SUMMARY

[0004] To this end, the present application proposes a latch which can at least partially solve the above problems.

[0005] According to a latch of the present application, a first object is releasably locked to a second object. The latch comprises: a housing for being fixed to the first object; a locking member disposed in the housing, which can be pivoted relative to the housing along a transverse axis between a locking position and an unlocking position, when the locking member is in the locking position, its locking portion can be extended out of the housing, when the locking member is in the unlocking position, its locking portion is retracted into the housing; an operating member at least partially disposed in the housing, the operating member can be longitudinally moved relative to the housing between a first position and a second position, the direction of the longitudinal movement is substantially perpendicular to the transverse axis; wherein the operating member is coupled with the locking member, so that the movement of the operating member can be converted into the pivoting movement of the locking member, when the operating member is longitudinally moved forward from the first position to the second position, the locking member is pivoted from the locking position to the unlocking position.

[0006] In one embodiment, the housing has: a first housing and a second housing which are buckled to each other to form a non-closed accommodation space for disposing the locking member and the operating member. The first housing is used for being fixed to the first object, and the second housing faces outward or the second object, and an opening is provided on the second housing, and the locking member and the operating member can be exposed from the opening.

[0007] In one embodiment, the locking member comprises: a locking member body; a pivot shaft provided at one end of the locking member body and extending in a transverse direction from both sides of the locking member body in a transverse direction, the locking member being pivotably mounted on the first housing via the pivot shaft, wherein the locking portion is provided at the other end of the locking member body opposite to the pivot shaft in a longitudinal direction, and a first recessed portion formed in a thickness direction of the locking member body between the pivot shaft and the locking portion, the thickness direction being perpendicular to the transverse direction and the longitudinal direction.

[0008] In one embodiment, the locking member further comprises a second recessed portion formed in the thickness direction between the locking portion and the first recessed portion, wherein the first recessed portion is further recessed from the second recessed portion away from the locking portion.

[0009] In one embodiment, the locking member is formed as two cantilever arms extending forward in the longitudinal direction from both sides of the locking member body away from the pivot shaft, a slot being formed between the two cantilever arms, the first recessed portion and the second recessed portion being formed on each cantilever arm, wherein the first recessed portion and the second recessed portion are formed in an obtuse angle recessed configuration as viewed in the transverse direction, such that the end of each cantilever arm is formed in an acute angle protruding configuration, and the two cantilever arms are formed in a left-right symmetrical configuration with respect to a longitudinal center line of the locking member.

[0010] In one embodiment, the operating member comprises an operating member body and an abutting portion provided at a longitudinal rear end of the operating member body and extending in the transverse direction from both sides of the operating member body in the transverse direction, the abutting portion being fitted into the first recessed portion when the operating member is in the first position and being fitted into the second recessed portion when the operating member is in the second position, such that the operating member is mounted on the locking member via the abutting portion and a longitudinal front end of the operating member extends forward in the longitudinal direction out of the accommodating space.

[0011] In one embodiment, the operating member body is accommodated in the slot, such that a portion of the operating member other than the abutting portion does not overlap with the locking member in the thickness direction.

[0012] In one embodiment, the portion of the operating member extending forward in the longitudinal direction is a pull ring for being pulled by a user, and the housing is provided with a housing ring at a longitudinal front end of the accommodating space for being held by the user, the pull ring being provided in a space surrounded by the housing ring, the pull ring being away from an inner side of the housing ring when the operating member is in the first position and being close to the inner side of the housing ring when the operating member is in the second position.

[0013] In one embodiment, a transverse central position of the operation member body of the operation member is provided with a slide groove extending in the longitudinal direction, and a positioning protrusion is provided on the inner side of the housing and inserted into one end of the slide groove; the latch further comprises a first elastic member for biasing the operation member towards the first position, and the first elastic member is arranged in the slide groove of the operation member, with both ends of the first elastic member abutting against the positioning protrusion and the other end of the slide groove, respectively.

[0014] In one embodiment, the housing is substantially flat and rectangular, the first housing, the second housing, the locking member and the operation member body are all substantially plate-shaped, and the thickness of the entire latch does not exceed the thickness of the locking member; a notch corresponding to the cantilever of the locking member is provided on the first housing to provide a pivoting space for the locking member; the transverse two sides of the locking member body are respectively provided with a clamping recess, and the clamping recess is arranged between the pivoting shaft and the first recess in the longitudinal direction; the inner side of the opening of the second housing is correspondingly provided with a clamping protrusion to cooperate with the clamping recess to limit the pivoting degree of the locking member extending out of the housing; and the positioning protrusion is formed on the longitudinal front side of the opening of the second housing.

[0015] In one embodiment, a second elastic member is arranged between the housing and the locking member to bias the locking member towards its locking position.

[0016] In one embodiment, the abutting portion is closer to the second housing than the rotation center of the pivoting shaft in the thickness direction, and when the locking member is in its locking position, the abutting portion abuts against the rear end of the first recess to prevent the locking member from pivoting towards its unlocking position.

[0017] In one embodiment, the second recess is arranged such that the front surface of the second recess does not exceed the housing when the locking member is in its locking position.

[0018] According to a locking structure of the present application, comprising: a first object capable of being inserted into a second object in the longitudinal direction; and a latch according to the present application fixed on the side of the first object facing the second object, and a corresponding locking hole is provided on the second object for the locking portion to extend into. BRIEF DESCRIPTION OF DRAWINGS

[0019] Hereinafter, embodiments of the present application will be described in further detail with reference to the accompanying drawings, in which:

[0020] Figures 1A-1F are respectively front view, rear view, left view, right view, top view and bottom view of a latch according to the present application, Figures 1G-1J are respectively perspective views of the latch from different angles.

[0021] Figure 2 is an exploded perspective view of the latch;

[0022] Figure 3A and Figure 3B are perspective views of the first housing of the latch at different angles;

[0023] Figure 4A and Figure 4B are perspective views of the second housing of the latch at different angles;

[0024] Figure 5A and Figure 5B are perspective views of the locking member of the latch at different angles;

[0025] Figure 6A and Figure 6B are perspective views of the operating member of the latch at different angles;

[0026] Figure 7A is a front view of the latch in a locked state, Figure 7B is a cross-sectional view taken along the line A-A in Figure 7A , Figures 7C-7E are perspective views corresponding to Figure 7A at different angles, Figure 7E in which the second housing is removed to show the interior of the latch;

[0027] Figure 8A is a front view of the latch in an unlocked state, Figure 8B is a cross-sectional view taken along the line B-B in Figure 8A , Figures 8C-8E are perspective views corresponding to Figure 8A at different angles, Figure 8E in which the second housing is removed to show the interior of the latch;

[0028] Figure 9 is a perspective view of an exemplary application scenario of the latch applied to a first article and a second article, in which the latch is in a locked state;

[0029] Figure 10 is a perspective view of an exemplary application scenario of the latch applied to a first article and a second article, in which the latch is in an unlocked state.

[0030] List of reference numerals:

[0031] 100 latch

[0032] 110 housing

[0033] 111 first housing

[0034] 112 pivot shaft slot

[0035] 113 positioning protrusion

[0036] 114 housing ring

[0037] 118 first blind hole

[0038] 115 second housing

[0039] 116 opening

[0040] 117 snap protrusion

[0041] 120 locking member

[0042] 121 pivot shaft

[0043] 122 locking portion

[0044] 123 first recess

[0045] 124 second recess

[0046] 125 slot

[0047] 126 snap recess

[0048] 127 second blind hole

[0049] 129 locking member body

[0050] 130 operating member

[0051] 131 operating member body

[0052] 132 abutting portion

[0053] 133 pull ring

[0054] 134 slide groove

[0055] 140 first elastic member

[0056] 150 second elastic member

[0057] 200 first article

[0058] 300 second article DETAILED DESCRIPTION

[0059] While the present application has been illustrated and described with reference to particular embodiments thereof, it is not intended to be limited to the details shown, since various modifications and substitutions can be made without departing in any way from the scope of the present application. Accordingly, the scope of the application is to be construed in accordance with the substance of the appended claims.

[0060] The direction descriptions such as "front", "back", "upper", "lower" and the like involved herein are only for the convenience of understanding, and the present application is not limited to these directions, but can be adjusted according to the actual situation.

[0061] Reference will now be made to Figures 1A-2 The latch 100 according to the present application is described as a whole.

[0062] As shown in the figure, the latch 100 comprises a housing 110, a locking member 120, an operating member 130, a first elastic member 140, and a second elastic member 150. The housing 110 is used to accommodate other components of the latch 100, and to fix the latch 100 to a first object 200 such as a server or a hard disk. In the present application, the housing 110 is formed by buckling a first housing 111 and a second housing 115. It should be understood that in other embodiments, the housing 110 can also be an integral component. The locking member 120 is pivotally arranged in the housing 110, and is used to lock the latch 100 to a second object 300 such as a cabinet. The operating member 130 is linearly movably arranged in the housing 110, and is operated by a user. The operating member 130 is coupled with the locking member 120, so that the movement of the operating member 130 can be converted into the pivoting movement of the locking member 120. The first elastic member 140 is used to bias the operating member 130 towards the locking position, and the second elastic member 150 is used to bias the locking member 120 towards the locking position (to be described in detail below).

[0063] In the following, for the convenience of description, the extending direction of the pivoting shaft 121 of the locking member 120 is referred to as the lateral direction, the moving direction of the operating member 130 is referred to as the longitudinal direction, the direction perpendicular to the longitudinal direction and the lateral direction is referred to as the thickness direction, the direction corresponding to the locking position of the operating member 130 is referred to as the back direction, and the direction corresponding to the unlocking position is referred to as the front direction. In the present embodiment, the longitudinal direction, the lateral direction, and the thickness direction are substantially perpendicular to each other two by two. It should be understood that in other embodiments, according to the use environment, in particular according to the shape of the first object 200 and the second object 300, the longitudinal direction, the lateral direction, and the thickness direction can be arranged to have a certain angle with each other.

[0064] Reference will now be made to Figures 3A-3B The specific structure of the first housing 111 is described.

[0065] The first housing 111 is a portion of the housing 110 facing the first object 200, and is substantially flat and rectangular. The first housing 111 includes a pivot shaft groove 112, a positioning protrusion 113, a housing ring 114, and a first blind hole 118. The pivot shaft groove 112 is formed near the rear end of the first housing 111 and extends in the lateral direction. The pivot shaft groove 112 is recessed from the inner surface of the first housing 111 and is configured to accommodate the pivot shaft 121 of the locking member 120. The housing ring 114 is formed at the front end of the first housing 111 and is substantially semicircular, with the diameter of the semicircle extending in the lateral direction. The positioning protrusion 113 is substantially located at the center of the housing ring 114 and is raised inward in the thickness direction from the inner surface of the first housing 111, and is configured to position the operating member 130 and the first elastic member 140. The first blind hole 118 is recessed from the inner side of the first housing 111 and is located in the middle of the first housing 111 in the lateral direction and slightly forward of the pivot shaft groove 112 in the longitudinal direction. The first blind hole 118 is configured to accommodate and abut against the second elastic member 150.

[0066] The first housing 111 further includes a notch corresponding to the cantilever of the locking member 120, which provides a pivot space for the locking member 120.

[0067] Now referring to Figures 4A-4B The specific structure of the second housing 115 will be described.

[0068] The second housing 115 is a portion of the housing 110 facing the outside (when not locked to the second object 300) or the second object 300 (when locked to the second object 300), and is also substantially flat and rectangular. The second housing 115 includes an opening 116 through which the locking member 120 and the operating member 130 can be exposed. The inner side of the opening 116 of the second housing 115 is provided with a latching protrusion 117 corresponding to the latching recess 126 of the locking member 120, so as to limit the pivot degree of the locking member 120 extending out of the housing 110. The positioning protrusion 113 of the first housing 111 corresponds to the front end position of the opening 116 of the second housing 115.

[0069] Now referring to Figures 5A-5B The specific structure of the locking member 120 according to the present application will be described.

[0070] As shown in the figure, the locking member 120 includes: a locking member body 129, a pivot shaft 121, a locking portion 122, a first recess 123, a second recess 124, a slot 125, an engaging recess 126, and a second blind hole 127. The pivot shaft 121 and the locking portion 122 are located at opposite ends of the locking member 120 along its longitudinal direction. More specifically, the pivot shaft 121 is located at the rear end of the locking member body 129 and extends laterally along both sides of the locking member body 129. The locking member 120 is pivotally mounted on the first housing 111 via the pivot shaft 121. The locking portion 122 is located at the front end of the locking member 120 and rises from the locking member 120 towards the second housing 115 along its thickness direction. When the locking member 120 is in the locked position, the locking portion 122 extends from the opening 116 of the second housing 115, thereby engaging and locking the second object 300.

[0071] The locking member 120 consists of two cantilever arms extending forward from both sides of the locking member body 129, with a slot 125 formed between the two cantilever arms. The operating member body 131 has a shape corresponding to the slot 125 and is accommodated in the slot 125 such that the portion of the operating member 130, except for the abutment portion 132, does not overlap with the locking member 120 in the thickness direction.

[0072] A first recess 123 and a second recess 124 are formed on each cantilever. The two cantilevers are symmetrical about the longitudinal centerline of the locking member 120. The first recess 123 is located between the pivot 121 and the locking part 122, and is formed concavely along the thickness direction of the locking member body 129. The second recess 124 is located between the locking part 122 and the first recess 123, and is also formed concavely along the thickness direction. More specifically, the first recess 123 is further concave from the end of the second recess 124 away from the locking part 122, that is, when viewed from a lateral perspective ( Figure 8B The first recess 123 is recessed further down than the second recess 124, or closer to the first housing 111. The first recess 123 and the second recess 124 have an obtuse-angled concave configuration, causing the ends of each cantilever to have an acute-angled convex configuration. The two cantilever arms are symmetrical about the longitudinal centerline of the locking member 120. Figure 7B As shown, in the locked state, the side of the second recess 124 away from the locking part 122 ( Figure 7B The middle part (right side) does not extend beyond the outer surface of the second housing 115. In this way, in the locked state, only the locking part 122 extends to the outside of the second housing 115, thereby allowing the second housing 115 to be set close to the second object 300, reducing the space occupied by the latch 100.

[0073] The engaging recess 126 is provided on both sides of the lock body 129 of the lock 120 in the lateral direction and between the pivot shaft 121 and the first recess 123 in the longitudinal direction. The engaging recess 126 abuts against the engaging protrusion 117 of the second housing 115 to limit the pivoting range of the lock 120 so as not to be separated from the housing 110 on the side of the second housing 115.

[0074] The second blind hole 127 is formed in the center of the lock body 129 in the lateral direction and slightly forward of the pivot shaft 121 in the longitudinal direction from the side of the lock body 129 facing the first housing 111. The second blind hole 127 corresponds to the position of the first blind hole 118. The two ends of the second elastic member 150 are respectively accommodated and abutted in the first blind hole 118 and the second blind hole 127, thereby biasing the lock 120 to the locked position.

[0075] In other embodiments, the second elastic member 150, the first blind hole 118 and the second blind hole 127 can not be provided. Alternatively, a torsion spring can be provided between the pivot shaft 121 of the lock 120 and the pivot shaft groove 112 of the first housing 111, which biases the lock 120 to the position extending out of the second housing 115 (i.e. the locked position).

[0076] Reference will now be made to Figures 6A-6B The specific structure of the operating member 130 will be described.

[0077] As shown, the operating member 130 includes an operating member body 131, an abutting portion 132, a pull ring 133 and a sliding groove 134. The abutting portion 132 is located at the longitudinal rear end of the operating member body 131 and extends in the lateral direction from both sides of the operating member body 131. Moreover, the abutting portion 132 is slightly raised from the operating member body 131 in the direction of the thickness towards the second housing 115, so as to fit into the first recess 123 and the second recess 124 of the lock 120. When the operating member 130 is in the locked position, the abutting portion 132 fits into the first recess 123, and when the operating member 130 is in the unlocked position, the abutting portion 132 fits into the second recess 124, so that the operating member 130 is supported on the lock 120 via the abutting portion 132. The longitudinal front end of the operating member 130 extends forward in the longitudinal direction.

[0078] A pull ring 133 is provided at the front end of the operating member 130, exposed outside the accommodating space formed by the first housing 111 and the second housing 115, so as to be operated by a user. The pull ring 133 is substantially semicircular, and has a diameter slightly smaller than the housing ring 114. When the operating member 130 is in the unlocked position, the pull ring 133 abuts against the inner side of the housing ring 114. A sliding groove 134 is formed at the transversely central position of the operating member body 131, and extends longitudinally. The position of the sliding groove 134 corresponds to the position of the positioning protrusion 113 of the housing 110, so that the positioning protrusion 113 is inserted in the sliding groove 134, to limit the longitudinal movement range of the operating member 130. In other embodiments, the pull ring 133 can also be rectangular, trapezoidal, or any other shape.

[0079] A first elastic member 140 is provided in the sliding groove 134, with both ends thereof abutting against the positioning protrusion 113 and one end of the sliding groove 134 respectively, so as to bias the operating member 130 towards the locked position (i.e. the rear end). In the present embodiment, the first elastic member 140 is a compression spring.

[0080] Reference will now be made to Figures 7A-8E the operation of the latch 100 according to the present application.

[0081] In Figures 7A-7E , the latch 100 is in the locked position. At this time, the operating member 130 is close to the rear end of the latch 100, and the abutting portion 132 of the operating member 130 is fitted in the first recessed portion 123 of the locking member 120. Since the first recessed portion 123 is recessed to a greater extent, the locking member 120 is pivoted to the locked position under the biasing action of the torsion spring, i.e. the locked portion 122 is in the position where it protrudes from the second housing 115. At this time, the locked portion 122 can be fitted to the corresponding portion of the second article 300, thereby locking the latch 100 (and the first article 200 fixed to the latch 100) to the second article 300.

[0082] In the embodiment shown in the drawings, the abutting portion 132 is closer to the second housing 115 in the thickness direction than the rotation center of the pivot shaft 121, i.e. higher in Figure 7B . When the latch 100 is shaken by an unexpected impact, the locking member 120 tends to rotate towards the unlocked position, i.e. tends to rotate counterclockwise in Figure 7B . At this time, since the abutting portion 132 abuts against the rear end of the first recessed portion 123, and the position of the abutting portion 132 is closer to the second housing 115 than the pivot shaft 121, the abutting portion 132 will resist the tendency of counterclockwise rotation of the locking member 120. Therefore, such arrangement is beneficial for preventing the accidental unlocking of the latch 100. It should be understood that in other embodiments, the abutting portion 132 can be equidistant to, or further away from, the second housing 115 in the thickness direction than the rotation center of the pivot shaft 121.

[0083] When the user needs to unlock the first article 200, he or she grips the pull ring 133 of the operating member 130 and pulls the pull ring 133 towards the housing ring 114. In this way, the operating member 130 moves forward relative to the first housing 111, the second housing 115 and the locking member 120, so that the abutting portion 132 moves from the first recess 123 into the second recess 124. Since the second recess 124 is shallower, the locking member 120 is forced to pivot towards the direction of the first housing 111, so that the latch 100 reaches the Figures 8A-8E illustrated unlocked position. At this time, the abutting portion 132 is engaged in the second recess 124, so that the locking member 120 does not automatically return to the locked position. At this time, the locking portion 122 is retracted into the housing 110 and no longer cooperates with the second article 300, thereby releasing the latch 100 (and the first article 200 fixed to the latch 100) from the second article 300.

[0084] Reference will now be made to Figures 9-10 an example in which the latch 100 is applied to the first article 200 and the second article 300. As shown, the latch 100 is mounted on the side of the first article 200 facing the first article 200. When the first article 200 is inserted into the second article 300, the rearwardly facing slope of the locking portion 122 abuts against the second article 300, so that the locking portion 122 is temporarily pivoted to the unlocked position. After the first article 200 is fully inserted into the first article 200, the locking portion 122 automatically pops out and cooperates into the window of the second article 300, so as to lock the first article 200. The user can pull the pull ring 133 to unlock the first article 200, and can also pull the first article 200 out of the second article 300 through the pull ring 133. In addition, since the latch 100 is a laterally symmetrical design, it can be symmetrically applied to both sides of the first article 200.

[0085] In summary, the present application proposes a latch 100 which is simple in structure and easy to operate. Moreover, through the special design of the housing 110, the operating member 130 and the locking member 120, the necessary functions of the latch 100 are realized while the overlap of the components in the thickness direction is minimized, thereby realizing an ultra-thin design.

[0086] While the preferred embodiments have been shown and described herein, it is understood that these embodiments are merely examples. Many variations, changes and substitutions will now occur to those skilled in the art without departing from the spirit of the present application. Accordingly, the attached claims are intended to cover all such variations as fall within the spirit and scope of the present application.

Claims

1. A latch (100) for releasably locking a first article (200) to a second article (300), characterised in that, The latch (100) comprises: a housing (110) for being fixed to the first article (200); a locking member (120) disposed in the housing (110) and pivotable relative to the housing (110) along a transverse axis between a locking position and an unlocking position, a locking portion (122) of the locking member (120) being capable of extending out of the housing (110) when the locking member (120) is in the locking position, and the locking portion (122) being capable of being retracted into the housing (110) when the locking member (120) is in the unlocking position; an operating member (130) disposed at least partially in the housing (110), the operating member (130) being longitudinally movable relative to the housing (110) between a first position and a second position, the longitudinal movement being substantially perpendicular to the transverse axis; wherein the operating member (130) is coupled to the locking member (120) such that the movement of the operating member (130) is converted into a pivoting movement of the locking member (120), the locking member (120) being pivoted from the locking position to the unlocking position when the operating member (130) is longitudinally moved forward from the first position to the second position; wherein the locking member (120) comprises a pivot shaft (121) and the locking portion (122) are disposed at two longitudinal ends of the locking member (120); wherein the locking member (120) comprises a locking member body (129) and a first recess (123), the first recess (123) being located between the pivot shaft (121) and the locking portion (122) and being recessed along a thickness direction of the locking member body (129), the thickness direction being perpendicular to the transverse and longitudinal directions.

2. The latch (100) according to claim 1, wherein: the housing (110) has: a first housing (111) and a second housing (115) which are coupled to each other to form a non-enclosed accommodation space for disposing the locking member (120) and the operating member (130); wherein the first housing (111) is used for being fixed to the first article (200), and the second housing (115) faces outward or the second article (300), and an opening (116) is provided on the second housing (115), and the locking member (120) and the operating member (130) are capable of being exposed from the opening (116).

3. The latch (100) according to claim 2, wherein: the pivot shaft (121) is disposed at one end of the locking member body (129) and extends transversely along two transverse sides of the locking member body (129), and the locking member (120) is pivotally supported on the first housing (111) through the pivot shaft (121), and the locking portion (122) is disposed at the other end of the locking member body (129) opposite to the pivot shaft (121) in the longitudinal direction. The first housing (111) is provided with a pivot shaft slot (112), and the pivot shaft (121) is accommodated in the pivot shaft slot (112).

4. The latch (100) according to claim 3, characterized in that: The locking member (120) further comprises a second recess (124) which is located between the locking portion (122) and the first recess (123) and is formed inwardly along the thickness direction; The first recess (123) is further formed inwardly from an end of the second recess (124) which is away from the locking portion (122).

5. The latch (100) according to claim 4, characterized in that: The locking member (120) is in the form of two cantilever arms which respectively extend longitudinally forward from both sides of the locking member body (129) and away from the pivot shaft (121), and a slot (125) is formed between the two cantilever arms; The first recess (123) and the second recess (124) are respectively formed on each cantilever arm, wherein, as viewed along the transverse direction, the first recess (123) and the second recess (124) are inwardly recessed at an obtuse angle, so that the end of each cantilever arm is outwardly protruded at an acute angle, and the two cantilever arms are symmetrically arranged relative to the longitudinal center line of the locking member (120).

6. The latch (100) according to claim 5, characterized in that: The operating member (130) comprises an operating member body (131) and an abutting portion (132) which is located at the longitudinal rear end of the operating member body (131) and extends transversely from both sides of the operating member body (131); When the operating member (130) is in the first position, the abutting portion (132) is fitted into the first recess (123), and when the operating member (130) is in the second position, the abutting portion (132) is fitted into the second recess (124), so that the operating member (130) is arranged on the locking member (120) via the abutting portion (132), and the longitudinal front end of the operating member (130) extends forward from the accommodation space along the longitudinal direction.

7. The latch (100) according to claim 6, characterized in that: The operating member body (131) is accommodated in the slot (125), so that the part of the operating member (130) other than the abutting portion (132) does not overlap the locking member (120) in the thickness direction.

8. The latch (100) according to claim 7, characterized in that: The part of the operating member (130) which extends forward along the longitudinal direction is a pull ring (133) for being pulled by a user; The housing (110) is provided with a housing ring (114) which is located at the longitudinal front end of the accommodation space and is held by a user. The pull ring (133) is disposed in a space surrounded by the housing ring (114), and is distanced from the inner side of the housing ring (114) when the operating member (130) is in its first position, and is close to the inner side of the housing ring (114) when the operating member (130) is in its second position.

9. The latch (100) according to claim 8, characterized in that: A transversely central position of the operating member body (131) of the operating member (130) is provided with a longitudinally extending sliding groove (134), and a positioning protrusion (113) is disposed on the inner side of the housing (110) and inserted into one end of the sliding groove (134); The latch (100) further comprises a first elastic member (140) for biasing the operating member (130) towards the first position, the first elastic member (140) is disposed in the sliding groove (134) of the operating member (130), and the two ends of the first elastic member (140) abut against the positioning protrusion (113) and the other end of the sliding groove (134) respectively.

10. The latch (100) according to claim 9, characterized in that: The housing (110) is substantially flat and rectangular, the first housing (111), the second housing (115), the locking member (120) and the operating member body (131) are all substantially plate-shaped, and the thickness of the entire latch (100) does not exceed the thickness of the locking member (120); A notch corresponding to the cantilever of the locking member (120) is provided on the first housing (111) to provide a pivoting space for the locking member (120); The locking member body (129) of the locking member (120) is provided with a clamping recess (126) on each of its transverse sides, the clamping recess is longitudinally disposed between the pivoting shaft (121) and the first recess (123), and the inner side of the opening (116) of the second housing (115) is correspondingly provided with a clamping protrusion to cooperate with the clamping recess (126) to limit the pivoting degree of the locking member (120) extending out of the housing (110); And The positioning protrusion (113) is formed on the longitudinal front side of the opening of the second housing (115).

11. The latch (100) according to claim 1, characterized in that: A second elastic member (150) is provided between the housing (110) and the locking member (120) to bias the locking member (120) towards its locking position.

12. The latch (100) according to claim 6, characterized in that: The abutting portion (132) is closer to the second housing (115) than the rotation center of the pivoting shaft (121) in the thickness direction, and when the locking member (120) is in its locking position, the abutting portion (132) abuts against the rear end of the first recess (123) to prevent the locking member (120) from pivoting towards its unlocking position.

13. The latch (100) according to claim 6, characterized in that: The second recess (124) is arranged such that a front surface of the second recess (124) does not protrude beyond the housing (110) when the locking member (120) is in its locking position.

14. A locking structure, characterized by, The locking structure comprises: a first object (200) which can be inserted into a second object (300) in a longitudinal direction; and The latch (100) according to any one of claims 1-13 is fixed on a side of the first object (200) facing the second object (300), and a corresponding locking hole is provided on the second object (300) for the locking portion (122) to extend into.

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