Locking mechanism and push-pull device

Abstract

The utility model relates to a locking mechanism and a push-and-pull device, the locking mechanism is arranged on the push-and-pull mechanism, the push-and-pull mechanism comprises a fixing seat and a push-and-pull plate, the push-and-pull plate can slide back and forth on the fixing seat along a first direction and a second direction which are parallel to each other, the locking mechanism comprises a lock pin, the lock pin is arranged on the fixing seat, and the lock pin is arranged on the fixing seat. The lock pin can slide between a first position and a second position, and when the lock pin slides to the first position, the lock pin is fixed relative to the fixed seat; when the push-and-pull plate moves in the first direction and drives the lock pin to slide to the first position, the push-and-pull plate is in wedge fit with the lock pin and used for pushing the lock pin to move in the direction separated from the push-and-pull plate, and when the push-and-pull plate continues to move in the first direction to the third position, the lock pin resets and abuts against the push-and-pull plate so as to lock the push-and-pull plate in the second direction. According to the locking mechanism provided by the invention, the lock pin can automatically lock the movement of the push-pull plate in the second direction, and the locking action of the locking mechanism on the push-pull plate is simple and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of locks, and in particular to a locking mechanism and a push-pull device. Background Art

[0002] With the progress of society, drawers have been widely used in the fields of office supplies, furniture, testing equipment, etc. due to their excellent storage function. In order to prevent the drawer from sliding out when closed, a locking mechanism is usually configured on the drawer, which can limit the state of the drawer to prevent the drawer from being opened at will.

[0003] At present, the locking mechanism configured on the drawer usually has the following two structures: 1. The state of the drawer is limited by the cooperation of the screw and the blocking block. However, in the process of pushing and pulling the drawer, the cooperation relationship between the screw and the blocking block needs to be frequently configured or released, resulting in the locking and unlocking actions of the locking mechanism being too cumbersome and labor-intensive. 2. The indexing pin is used for locking. When the drawer needs to be limited, after the drawer reaches the locked position, it is necessary to operate the locking pin and insert the locking pin into the corresponding lock slot to achieve the locking action of the drawer. On the contrary, when the position of the drawer needs to be unlocked, it is necessary to operate the locking pin and withdraw the locking pin from the corresponding lock slot to achieve the unlocking action of the drawer. The locking and unlocking actions of the above drawers are too cumbersome, which seriously affects the user experience of the operator. Summary of the invention

[0004] Based on this, it is necessary to provide a locking mechanism and a push-pull device to address the problem that the locking and unlocking actions of the existing locking mechanism are too complicated.

[0005] A locking mechanism is configured on a push-pull mechanism, the push-pull mechanism comprising a fixed seat and a push-pull plate, the push-pull plate can slide back and forth on the fixed seat along a first direction and a second direction parallel to each other, the locking mechanism comprising:

[0006] A locking pin, the locking pin is disposed on the fixing seat and can slide between a first position and a second position. When the locking pin slides to the first position, the locking pin is fixed relative to the fixing seat; wherein,

[0007] When the push-pull plate moves toward the first direction and drives the locking pin to slide to the first position, the push-pull plate and the locking pin are wedge-matched to push the locking pin to move in the direction of separation from the push-pull plate, and when the push-pull plate continues to move toward the first direction to the third position, the locking pin is reset and abuts against the push-pull plate to lock the push-pull plate in the second direction.

[0008] In one embodiment, the lock pin includes a slider and a lock tongue, the slider is slidably disposed on the fixed seat, the lock tongue is movably disposed on the slider, the lock tongue has a first inclined surface and a first abutting surface, the first inclined surface forms an obtuse angle with the second direction, and the first abutting surface and the second direction are perpendicular to each other;

[0009] The push-pull plate has a second inclined surface and a second abutting surface, the second inclined surface is parallel to the first inclined surface, and the second abutting surface is parallel to the first abutting surface;

[0010] When the push-pull plate moves toward the first direction to the first position, the second inclined surface abuts against the first inclined surface. When the push-pull plate continues to move toward the first direction to the third position, the second abutting surface may abut against the first abutting surface.

[0011] In one of the embodiments, the locking mechanism further comprises a stop block, which is disposed on a fixing seat and is located on a sliding path of the locking pin;

[0012] When the push-pull plate moves toward the second direction to the second position, the stop block is wedge-matched with the locking pin to push the locking pin to move in a direction separating from the push-pull plate, so as to unlock the push-pull plate in the second direction.

[0013] In one embodiment, the stop block has a third inclined surface, and the third inclined surface is parallel to the first inclined surface. When the push-pull plate moves toward the second direction to the second position, the third inclined surface abuts against the first inclined surface.

[0014] In one of the embodiments, the locking pin further includes a first elastic member, and the locking tongue is disposed on the sliding block through the first elastic member, so that the locking tongue can move relative to the sliding block along the deformation direction of the first elastic member.

[0015] In one of the embodiments, the slider is provided with a receiving groove, and the locking tongue is at least partially disposed in the receiving groove and is movable in the receiving groove.

[0016] In one embodiment, the locking mechanism also includes a guide rod and a second elastic member, the guide rod is arranged on the fixed seat and extends along the sliding direction of the locking pin, the locking pin is slidably arranged on the guide rod, and the second elastic member is sleeved on the guide rod. When the locking pin slides to the second position, the locking pin abuts against the second elastic member.

[0017] In one embodiment, the locking mechanism further includes two blocking blocks, and the two blocking blocks are respectively arranged at the first position and the second position. When the locking pin is in a sliding process, the locking pin can abut against the blocking blocks.

[0018] A push-pull device, comprising:

[0019] A push-pull mechanism, the push-pull mechanism comprising a fixed seat and a push-pull plate, the push-pull plate being able to slide back and forth on the fixed seat along a first direction and a second direction parallel to each other; and

[0020] As described in any one of the above technical solutions, the locking mechanism is arranged on the fixing seat.

[0021] In one of the embodiments, the fixing seat is provided with a plurality of sliding grooves at intervals, the push-pull plate is slidably disposed in one of the sliding grooves, and the locking pin is slidably disposed in another of the sliding grooves.

[0022] In the above locking mechanism and push-pull device, when the push-pull plate moves in the first direction and the push-pull plate drives the lock pin to slide to the first position, the push-pull plate and the lock pin are wedge-matched. At this time, the push-pull plate will exert a force on the lock pin to push the lock pin to move in the direction of separation from the push-pull plate. The lock pin gives way and does not interfere with the movement of the push-pull plate in the first direction. Then, when the push-pull plate continues to move in the first direction to the third position, the lock pin is reset and abuts against the push-pull plate. The lock pin will interfere with the movement of the push-pull plate in the second direction to lock the push-pull plate in the second direction. In the locking mechanism of the present application, the lock pin can automatically lock the movement of the push-pull plate in the second direction. The locking mechanism is simple for locking the push-pull plate, thereby improving the user experience of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the push-pull device provided in some embodiments.

[0024] Figure 2 It is a schematic diagram of an exploded view of a push-pull device provided in some embodiments.

[0025] Figure 3 for Figure 2 A partial enlarged view of area A.

[0026] Figure 4 This is a schematic diagram of the structure in which the locking pin provided in some embodiments slides to the first position.

[0027] Figure 5 It is a schematic diagram of the structure in which the push-pull plate provided in some embodiments moves to the third position.

[0028] Figure 6This is a schematic diagram of the structure in which the locking pin provided in some embodiments slides to the second position.

[0029] Reference numerals:

[0030] 100. Locking mechanism;

[0031] 110, lock pin; 111, slider; 1111, receiving groove; 112, lock tongue; 1121, first inclined surface; 1122, first abutting surface; 113, first elastic member; 120, stop block; 121, third inclined surface; 130, guide rod; 140, second elastic member; 150, stop block; 151, first stop block; 152, second stop block;

[0032] 200, push-pull device;

[0033] 210, push-pull mechanism; 211, fixed seat; 2111, slide groove; 212, push-pull plate; 2121, second inclined surface; 2122, second abutting surface. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0040] The technical solution provided by the embodiments of the present application is described below in conjunction with the accompanying drawings.

[0041] See also Figure 1-Figure 3 As shown, the present application provides a locking mechanism 100, which is configured on a push-pull mechanism 210. The push-pull mechanism 210 includes a fixed seat 211 and a push-pull plate 212. The push-pull plate 212 can be moved along a first direction ( Figure 2 V1 direction shown) and the second direction ( Figure 2The locking mechanism 100 reciprocates in the first direction (as shown in the V2 direction), and the first direction and the second direction are parallel to each other. For example, in the present embodiment, the first direction is the pushing direction of the push-pull plate 212, and the second direction is the pulling direction of the push-pull plate 212. The locking mechanism 100 includes a locking pin 110, and the locking mechanism 100 is used for locking the push-pull plate 212. The locking pin 110 is disposed on the fixed seat 211, and the locking pin 110 can slide between the first position and the second position, that is, the locking pin 110 is slidably disposed on the fixed seat 211, and the movement stroke of the locking pin 110 on the fixed seat 211 is between the first position and the second position. When the locking pin 110 slides to the first position, the locking pin 110 is fixed relative to the fixed seat 211. At this time, the locking pin 110 cannot continue to slide along the first direction relative to the fixed seat 211.

[0042] When the push-pull plate 212 moves toward the first direction and the push-pull plate 212 drives the locking pin 110 to slide to the first position, Figure 4 As shown, the push-pull plate 212 and the lock pin 110 are wedge-shaped. At this time, the push-pull plate 212 will exert a force on the lock pin 110 to push the lock pin 110 to move in a direction away from the push-pull plate 212. The lock pin 110 gives way and does not interfere with the movement of the push-pull plate 212 in the first direction. Then, when the push-pull plate 212 continues to move in the first direction to the third position, refer to Figure 5 As shown, the lock pin 110 is reset and abuts against the push-pull plate 212, and the lock pin 110 will interfere with the movement of the push-pull plate 212 in the second direction to lock the push-pull plate 212 in the second direction. It should be noted that in this embodiment, the wedge-shaped fit between the push-pull plate 212 and the lock pin 110 does not necessarily require the mutual fit between the two inclined surfaces, and can also be a fit method similar to the wedge-shaped fit, and the first position and the second position are two different positions of the lock pin 110 during the sliding process.

[0043] The locking mechanism 100 mentioned above will not affect the movement of the push-pull plate 212 in the first direction through the automatic giving way of the locking pin 110, and the locking pin 110 can automatically lock the movement of the push-pull plate 212 in the second direction. The locking mechanism 100 is simple in locking the push-pull plate 212, thereby improving the user experience of the operator.

[0044] In one embodiment, refer to Figure 1-Figure 3 As shown, the lock pin 110 includes a slider 111 and a lock tongue 112. The slider 111 is slidably disposed on the fixed seat 211, and the lock tongue 112 is movably disposed on the slider 111. The lock tongue 112 has a first inclined surface 1121 and a first abutting surface 1122, and the first inclined surface 1121 forms an obtuse angle with the second direction (that is, the angle between the first inclined surface 1121 and the second direction is Figure 3As shown in α, and 90°<α<180°), the first abutting surface 1122 is perpendicular to the second direction (that is, the angle between the first abutting surface 1122 and the second direction is Figure 3 As shown in β, and β=90°). The push-pull plate 212 has a second inclined surface 2121 and a second abutting surface 2122. The second inclined surface 2121 is parallel to the first inclined surface 1121, and the second abutting surface 2122 is parallel to the first abutting surface 1122. That is, the second inclined surface 2121 forms an acute angle with the second direction, and the second abutting surface 2122 is perpendicular to the second direction.

[0045] When the push-pull plate 212 moves toward the first direction to the first position, Figure 4 As shown, the second inclined surface 2121 is wedge-matched with the first inclined surface 1121, the second inclined surface 2121 abuts against the first inclined surface 1121, and the second inclined surface 2121 applies a force to the first inclined surface 1121 to push the lock pin 110 to move in the direction of separation from the push-pull plate 212. The lock pin 110 gives way and does not interfere with the movement of the push-pull plate 212 in the first direction. Then, when the push-pull plate 212 continues to move in the first direction, the push-pull plate 212 and the lock pin 110 separate from each other, and when the push-pull plate 212 moves to the third position, refer to Figure 5 As shown, the second abutting surface 2122 abuts against the first abutting surface 1122. Since the first abutting surface 1122 is perpendicular to the second direction, the locking pin 110 will interfere with the movement of the push-pull plate 212 in the second direction to lock the push-pull plate 212 in the second direction.

[0046] In order to realize the unlocking operation of the push-pull plate 212 in the second direction, in one embodiment, refer to Figure 1-Figure 3 As shown, the locking mechanism 100 further includes a stop block 120, which is disposed on the fixing seat 211 by screwing, welding, etc., and is located on the sliding path of the locking pin 110, such as the stop block 120 is located between the first position and the second position. Figure 6 As shown, the stop block 120 and the lock pin 110 are wedge-matched. At this time, the stop block 120 will exert a force on the lock pin 110 to push the lock pin 110 to move in the direction of separation from the push-pull plate 212. The lock pin 110 gives way and does not interfere with the movement of the push-pull plate 212 in the second direction. The push-pull plate 212 can be separated from the lock pin 110 to unlock the push-pull plate 212 in the second direction. It should be noted that in this embodiment, the wedge-matching between the stop block 120 and the lock pin 110 does not necessarily require the mutual cooperation between the two inclined surfaces, and can also be a cooperation method similar to the wedge-matching.

[0047] Specifically, see Figure 1-Figure 3As shown, the stop block 120 has a third inclined surface 121, and the third inclined surface 121 is parallel to the first inclined surface 1121, that is, the third inclined surface 121 forms an acute angle with the second direction. Figure 6 As shown, the third inclined surface 121 is wedge-matched with the first inclined surface 1121, and the third inclined surface 121 abuts against the first inclined surface 1121. The third inclined surface 121 applies a force to the first inclined surface 1121 to push the locking pin 110 to move in the direction of separation from the push-pull plate 212. The locking pin 110 gives way and will not interfere with the movement of the push-pull plate 212 in the second direction, so as to unlock the push-pull plate 212 in the second direction.

[0048] Further, in one embodiment, refer to Figure 1-Figure 3 As shown, the lock pin 110 further includes a first elastic member 113. The lock tongue 112 is disposed on the slider 111 through the first elastic member 113, and the lock tongue 112 can move relative to the slider 111 along the deformation direction of the first elastic member 113. Exemplarily, one end of the first elastic member 113 is connected to the slider 111, and the other end of the first elastic member 113 is connected to the lock tongue 112, so that the lock tongue 112 is suspended and movable on the slider 111. When the push-pull plate 212 is separated from the lock pin 110, under the elastic action of the first elastic member 113, the lock tongue 112 can perform a reset movement to lock the push-pull plate 212, or return to the initial position to facilitate the cyclic execution of the locking / unlocking operation of the push-pull plate 212.

[0049] Among them, in this embodiment, the first elastic member 113 is a reset spring, and the first elastic member 113 is in a stretched state under normal conditions. When the first elastic member 113 is subjected to the force of the push-pull plate 212 or the stop block 120, the first elastic member 113 can be deformed and compressed, and drive the lock tongue 112 to move in the direction of separation from the push-pull plate 212, and after the force of the push-pull plate 212 or the stop block 120 acting on the first elastic member 113 is removed, the first elastic member 113 is reset and drives the lock tongue 112 to move in the direction of contact with the push-pull plate 212. Of course, the type of the first elastic member 113 is not limited to the reset spring provided above, and can also be an elastic sheet, a flexible sheet or other elements capable of elastic deformation. The specific element type of the first elastic member 113 is not limited in this application.

[0050] In one embodiment, refer to Figure 2 and Figure 3As shown, the slider 111 is provided with a receiving groove 1111. Preferably, the receiving groove 1111 is integrally formed on the slider 111 by casting, extrusion or the like, so as to simplify the molding process of providing the receiving groove 1111 on the slider 111. At least a portion of the gap of the lock tongue 112 is provided in the receiving groove 1111, and the lock tongue 112 can move in the receiving groove 1111. Specifically, when the push-pull plate 212 or the stop block 120 applies a force to the lock tongue 112, the first elastic member 113 is deformed and compressed by the force, and the lock tongue 112 moves in a direction to be received into the receiving groove 1111. The lock tongue 112 can be at least partially accommodated in the receiving groove 1111, and the lock tongue 112 gives way to avoid interfering with the movement of the push-pull plate 212 in the first direction or the second direction, thereby realizing the movement of the push-pull plate 212 in the first direction or the second direction; on the contrary, when the push-pull plate 212 or the stop block 120 applies a force to the lock tongue 112, the first elastic member 113 is deformed and compressed by the force, and the lock tongue 112 moves in a direction to be received into the receiving groove 1111. The lock tongue 112 can at least partially be accommodated in the receiving groove 1111, and the lock tongue 112 gives way to avoid interfering with the movement of the push-pull plate 212 in the first direction or the second direction, thereby realizing the movement of the push-pull plate 212 in the first direction or the second direction; on the contrary, when the push-pull plate 212 or the stop block 120 applies a force to the lock tongue 112, the first elastic member 113 is deformed and compressed by the force, and the lock tongue 112 moves in a After the force of the block 120 acting on the lock tongue 112 is removed, the first elastic member 113 is reset and drives the lock tongue 112 to move in the direction of extending out of the accommodating groove 1111. The lock tongue 112 at least partially extends to the outside of the slider 111. The lock tongue 112 can interfere with the movement of the push-pull plate 212 in the first direction or the second direction, thereby realizing the locking operation of the lock tongue 112 on the push-pull plate 212, or returning to the initial position to facilitate the cyclic execution of the locking / unlocking operation of the push-pull plate 212.

[0051] In one embodiment, refer to Figure 1-Figure 3 As shown, the locking mechanism 100 further includes a guide rod 130 and a second elastic member 140. The guide rod 130 is arranged on the fixing seat 211 by plugging, welding, etc., and the guide rod 130 extends along the sliding direction of the locking pin 110. The locking pin 110 is slidably arranged on the guide rod 130. Since the extending direction of the guide rod 130 is consistent with the sliding direction of the locking pin 110, the guide rod 130 can guide the sliding action of the locking pin 110. The second elastic member 140 is sleeved on the guide rod 130. When the locking pin 110 slides to the second position, the locking pin 110 abuts against the second elastic member 140. Under the elastic action of the second elastic member 140, the locking pin 110 can move near the second position, ensuring that the locking pin 110 can abut against the stop block 120, thereby enabling the locking pin 110 to move in the direction of separation from the push-pull plate 212 in the second position, thereby avoiding the locking pin 110 from interfering with the movement of the push-pull plate 212 in the second direction, thereby realizing the unlocking operation of the push-pull plate 212 in the second direction.

[0052] Among them, in this embodiment, the second elastic member 140 is a reset spring, and the second elastic member 140 is in a stretched state under normal conditions. When the second elastic member 140 is subjected to the force of the lock pin 110, the second elastic member 140 can be deformed and compressed, and the second elastic member 140 applies a reaction force to the lock pin 110 to keep the lock pin 110 in the second position, and after the force of the lock pin 110 acting on the second elastic member 140 is removed, the second elastic member 140 is reset to the initial position to facilitate the cyclic execution of the locking / unlocking operation of the push-pull plate 212. Of course, the type of the second elastic member 140 is not limited to the reset spring provided above, and can also be an elastic sheet, a flexible sheet or other elements that can undergo elastic deformation. The specific element type of the second elastic member 140 is not limited in this application.

[0053] In one embodiment, refer to Figure 1-Figure 3 As shown, the locking mechanism 100 also includes two blocking blocks 150. The two blocking blocks 150 are spaced apart on the fixing seat 211 by means of screw connection, welding, etc., and the two blocking blocks 150 are respectively located at a first position and a second position. When the locking pin 110 is in the sliding process, the locking pin 110 can abut against the blocking block 150, and the blocking block 150 can prevent the locking pin 110 from continuing to move in the first direction or the second direction. Exemplarily, the two blocking blocks 150 are respectively defined as a first blocking block 151 and a second blocking block 152, the first blocking block 151 is set at the first position, and the second blocking block 152 is set at the second position. When the push-pull plate 212 drives the locking pin 110 to slide to the first position, refer to Figure 4 As shown, the lock pin 110 can abut against the first blocking block 151, and the first blocking block 151 blocks the lock pin 110 from continuing to move in the first direction, so as to keep the lock pin 110 in the first position to perform the locking operation of the push-pull plate 212; when the push-pull plate 212 drives the lock pin 110 to slide to the second position, refer to Figure 6 As shown, the locking pin 110 can abut against the second blocking block 152 , and the second blocking block 152 blocks the locking pin 110 from continuing to move in the second direction, so as to keep the locking pin 110 at the second position to perform an unlocking operation of the push-pull plate 212 .

[0054] Also, see Figure 1 and Figure 2 As shown, the present application provides a push-pull device 200, which includes a push-pull mechanism 210 and a locking mechanism 100 as in the above technical solution.

[0055] The push-pull mechanism 210 includes a fixed seat 211 and a push-pull plate 212. The push-pull plate 212 can be moved along a first direction ( Figure 2 V1 direction shown) and the second direction ( Figure 2The first direction and the second direction are parallel to each other. For example, in this embodiment, the first direction is the pushing direction of the push-pull plate 212, and the second direction is the pulling direction of the push-pull plate 212. The locking mechanism 100 is slidably disposed on the fixing seat 211. Through the automatic giving way of the locking pin 110, the locking mechanism 100 will not affect the movement of the push-pull plate 212 in the first direction, and the locking pin 110 can automatically lock the movement of the push-pull plate 212 in the second direction. The locking mechanism 100 is simple in locking the push-pull plate 212, thereby improving the user experience of the operator.

[0056] In one embodiment, refer to Figure 1 and Figure 2 As shown, the fixed seat 211 is provided with a plurality of slide grooves 2111 at intervals. Preferably, the slide grooves 2111 are integrally formed on the fixed seat 211 by casting, extrusion, etc., so as to simplify the forming method of providing the slide grooves 2111 on the fixed seat 211. The push-pull plate 212 is slidably provided in one of the slide grooves 2111, so as to facilitate the push-pull operation of the push-pull plate 212. The lock pin 110 is slidably provided in another slide groove 2111, so as to facilitate the follow-up movement of the lock pin 110 and the push-pull plate 212 on the fixed seat 211. Exemplarily, there are two slide grooves 2111, the extension direction of the slide grooves 2111 is consistent with the push-pull direction of the push-pull plate 212, the two slide grooves 2111 are distributed at intervals on the fixed seat 211, the push-pull plate 212 is slidably provided in one of the slide grooves 2111, and the lock pin 110 is slidably provided in another slide groove 2111.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A locking mechanism, arranged in a push-pull mechanism, the push-pull mechanism comprising a fixed seat and a push-pull plate, the push-pull plate being able to reciprocate on the fixed seat along a first direction and a second direction parallel to each other, characterized in that: The locking mechanism comprises: A locking pin, the locking pin is disposed on the fixing seat and can slide between a first position and a second position. When the locking pin slides to the first position, the locking pin is fixed relative to the fixing seat; wherein, When the push-pull plate moves toward the first direction and drives the locking pin to slide to the first position, the push-pull plate and the locking pin are wedge-matched to push the locking pin to move in the direction of separation from the push-pull plate, and when the push-pull plate continues to move toward the first direction to the third position, the locking pin is reset and abuts against the push-pull plate to lock the push-pull plate in the second direction.

2. The locking mechanism according to claim 1, characterized in that: The lock pin comprises a slider and a lock tongue, the slider is slidably arranged on the fixing seat, the lock tongue is movably arranged on the slider, the lock tongue has a first inclined surface and a first abutting surface, the first inclined surface forms an obtuse angle with the second direction, and the first abutting surface is perpendicular to the second direction; The push-pull plate has a second inclined surface and a second abutting surface, the second inclined surface is parallel to the first inclined surface, and the second abutting surface is parallel to the first abutting surface; When the push-pull plate moves toward the first direction to the first position, the second inclined surface abuts against the first inclined surface. When the push-pull plate continues to move toward the first direction to the third position, the second abutting surface may abut against the first abutting surface.

3. The locking mechanism according to claim 2, characterized in that: The locking mechanism further comprises a stop block, which is arranged on a fixing seat and is located on a sliding path of the locking pin; When the push-pull plate moves toward the second direction to the second position, the stop block is wedge-matched with the locking pin to push the locking pin to move in a direction separating from the push-pull plate, so as to unlock the push-pull plate in the second direction.

4. The locking mechanism according to claim 3, characterized in that: The stop block has a third inclined surface, and the third inclined surface is parallel to the first inclined surface. When the push-pull plate moves toward the second direction to the second position, the third inclined surface abuts against the first inclined surface.

5. The locking mechanism according to claim 2, characterized in that: The locking pin further includes a first elastic member, and the locking tongue is disposed on the sliding block through the first elastic member, so that the locking tongue can move relative to the sliding block along the deformation direction of the first elastic member.

6. The locking mechanism according to claim 2, characterized in that: The sliding block is provided with a receiving groove, and at least a part of the locking tongue is arranged in the receiving groove and can move in the receiving groove.

7. The locking mechanism according to claim 1, characterized in that: The locking mechanism also includes a guide rod and a second elastic member. The guide rod is arranged on the fixed seat and extends along the sliding direction of the locking pin. The locking pin is slidably arranged on the guide rod. The second elastic member is sleeved on the guide rod. When the locking pin slides to the second position, the locking pin abuts against the second elastic member.

8. The locking mechanism according to claim 1, characterized in that: The locking mechanism further includes two blocking blocks, which are respectively arranged at the first position and the second position. When the locking pin is in a sliding process, the locking pin can abut against the blocking blocks.

9. A push-pull device, characterized in that: The push-pull device comprises: A push-pull mechanism, the push-pull mechanism comprising a fixed seat and a push-pull plate, the push-pull plate being able to slide back and forth on the fixed seat along a first direction and a second direction parallel to each other; and The locking mechanism according to any one of claims 1 to 8, wherein the locking mechanism is arranged on the fixing seat.

10. The push-pull device according to claim 9, characterized in that: The fixing seat is provided with a plurality of sliding grooves at intervals, the push-pull plate is slidably arranged in one of the sliding grooves, and the locking pin is slidably arranged in another sliding groove.

Images