Square shaft structure and lock

Abstract

The square shaft structure comprises a square shaft, the square shaft is movably inserted into a lock body in the extending direction of the square shaft, a plurality of limiting holes are formed in the square shaft at intervals in the extending direction of the square shaft, an elastic pin assembly is arranged in each limiting hole, and the elastic pin assemblies can stretch out of or retract into the limiting holes; in the moving process of the square shaft, any elastic pin assembly can stretch out of the limiting hole and abut against the first side face, facing the lock panel, of the lock body. According to the square shaft structure, when a door lock is installed, the square shaft can be moved in the extending direction of the square shaft based on the distance between the lock panel and the first side face of the lock body according to the actual situation of a door lock installation scene, and the elastic pin assembly at the proper position is selected, so that the elastic pin assembly pops out of the limiting hole and abuts against the first side face of the lock body; the length of the end, extending out of the first side face of the lock body, of the square shaft is adjusted, the lock body and the lock panel can be installed on door plates of different door thicknesses, and the lock bodies and the lock panels on the door plates of different thicknesses can be assembled without cutting the square shaft.

Description

Technical Field

[0001] This application relates to the field of lock technology, and in particular to a square shaft structure and lock. Background Technology

[0002] With the development of society and economy and the progress of technology, the gradual development of door lock devices has made door locks increasingly complex. In particular, smart door locks not only have complex mechanical structures, but also intelligent electronic components.

[0003] Currently, door locks consist of a lock panel installed on the door panel and a lock body installed inside the door. The lock panel is generally connected to the lock body via a square shaft. Due to the inconsistent thickness of door panels and the uncertain assembly position of the lock body on the door panel, the relative distance between the lock body and the lock panel varies. This results in different length requirements for the transmission connector (square shaft) between the lock panel and the lock body. Assemblers need to cut the square shaft on-site, which is inconvenient and presents problems such as inconsistent cutting accuracy, easy rusting of the cut end, and high risk of accidents during the cutting process. Utility Model Content

[0004] Therefore, it is necessary to provide a square shaft structure and lock to address the problem that the existing square shaft of door locks cannot be adapted to door panels of different thicknesses.

[0005] A square shaft structure for connecting a lock panel and a lock body, the square shaft structure comprising:

[0006] A square shaft is movably inserted into the lock body along its extension direction, and a plurality of limiting holes are provided at intervals along its extension direction. Each limiting hole is provided with an elastic pin assembly, which can extend or retract into the limiting hole.

[0007] During the movement of the square shaft, any of the elastic pin components can extend out of the limiting hole and abut against the first side of the lock body facing the lock panel.

[0008] In one embodiment, the elastic pin assembly includes a first elastic element and a stop element. The first elastic element is disposed in the limiting hole, and the stop element abuts against the first elastic element and extends at least partially out of the limiting hole by the elastic force of the first elastic element. If the first elastic element is retracted by force, the stop element retracts into the limiting hole.

[0009] In one embodiment, the limiting hole includes a first receiving hole and a second receiving hole, the first receiving hole being used to receive the first elastic member, and the second receiving hole being used to receive the stop member;

[0010] The first receiving hole and the second receiving hole are coaxial and connected. The diameter of the first receiving hole is R1 and the diameter of the second receiving hole is R2, wherein R1 > R2.

[0011] In one embodiment, the first elastic element is a spring, and the outer diameter of the first elastic element is R3, wherein R1≥R3>R2.

[0012] In one embodiment, the stop member includes a stop portion and a connecting portion connected together. The stop portion is movably disposed in the second receiving hole and can extend out of the second receiving hole. The connecting portion is movably disposed in the first receiving hole, and the outer peripheral dimension of the connecting portion is greater than R2.

[0013] In one embodiment, the limiting hole is a through hole, and the elastic pin assembly further includes a plug, which is embedded in the limiting hole and abuts against the end of the first elastic member away from the stop member.

[0014] In one embodiment, the distance between two adjacent limiting holes in the extending direction of the square shaft is d, where 5mm≤d≤10mm.

[0015] A lock, the lock comprising a lock body, a front lock panel, a rear lock panel, and a square shaft structure as described in any of the above technical solutions;

[0016] The front lock panel and the rear lock panel are respectively located on opposite sides of the lock body, and the end of the square shaft extending out of the first side of the lock body is connected to the rear lock panel.

[0017] In one embodiment, the rear lock panel is provided with a square shaft hole, the end of the square shaft extending out of the first side of the lock body is inserted into the square shaft hole, and the length of the square shaft inserted into the square shaft hole is not less than 8mm.

[0018] In one embodiment, a second elastic element is provided inside the square shaft hole. The second elastic element abuts against the end of the square shaft, and its deformation direction is consistent with the extension direction of the square shaft.

[0019] The square shaft structure and door lock provided in this application allow the elastic pin assembly to extend or be compressed into the limiting hole, thus enabling the square shaft to move flexibly within the lock body. During door lock installation, based on the actual installation scenario and the distance between the lock panel and the first side of the lock body, the square shaft can be moved along its extension direction. A suitable elastic pin assembly can be selected to pop out of the limiting hole and abut against the first side of the lock body, adjusting the length of the end of the square shaft extending beyond the first side of the lock body. This allows the lock body and lock panel to be installed on door panels of different thicknesses without requiring cutting the square shaft, thus adapting to the assembly of the lock body and lock panel on door panels of varying thicknesses. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the square shaft structure provided in some embodiments.

[0021] Figure 2 This is a side view of the square shaft structure provided in some embodiments.

[0022] Figure 3 for Figure 2 Sectional view along the AA direction.

[0023] Figure 4 for Figure 3 A magnified view of a portion of region B in the middle.

[0024] Figure 5 This is a structural schematic diagram of the elastic pin assembly provided in some embodiments.

[0025] Figure 6 This is a side view of the lock provided in some embodiments.

[0026] Figure 7 This is a front view of the lock provided in some embodiments.

[0027] Figure 8 for Figure 7 Sectional view along the CC direction.

[0028] Figure label:

[0029] 100. Square shaft structure;

[0030] 110. Square shaft; 111. Limiting hole; 1111. First receiving hole; 1112. Second receiving hole; 120. Elastic pin assembly; 121. First elastic element; 122. Stopping element; 1221. Stopping part; 1222. Connecting part; 123. Plug;

[0031] 200. Locks;

[0032] 210. Lock panel; 211. Front lock panel; 212. Rear lock panel; 2121. Square shaft hole; 2122. Second elastic element; 220. Lock body; 221. First side. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, 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 possible implementation.

[0039] The technical solutions provided by the embodiments of this application are described below with reference to the accompanying drawings.

[0040] See Figures 1-6 As shown, this application provides a square shaft structure 100, which includes a square shaft 110 and is used to connect the lock panel 210 and the lock body 220. In this embodiment, see [reference needed]. Figure 6 As shown, the lock panel 210 can be a front lock panel 211 and / or a rear lock panel 212. The lock panel 210 is installed on the outside of the door panel, and the lock body 220 is installed inside the door panel. The square shaft structure 100 is used to connect the front lock panel 211 and the lock body 220, and / or the square shaft structure 100 is used to connect the rear lock panel 212 and the lock body 220 to realize the transmission between the lock panel 210 and the lock body 220.

[0041] A square shaft 110 is movably inserted into the lock body 220 along its extending direction. If the lock body 220 has an insertion hole, the square shaft 110 is inserted into the insertion hole with a gap, and the square shaft 110 can move within the insertion hole along its extending direction. The square shaft 110 has multiple limiting holes 111 spaced apart along its extending direction, and each limiting hole 111 has a resilient pin assembly 120. The resilient pin assembly 120 can extend or retract into the limiting hole 111. During the movement of the square shaft 110, any resilient pin assembly 120 can extend out of the limiting hole 111 and abut against the first side 221 of the lock body 220 facing the lock panel 210 to adjust the gap between the lock panel 210 and the lock body 220, so that the lock panel 210 can adapt to the connection between door panels of different thicknesses and the lock body 220. Conversely, during the movement of the square shaft 110, any elastic pin assembly 120 can retract into the limiting hole 111 to avoid interference with the movement of the square shaft 110, thus enabling the square shaft 110 to move along its extension direction.

[0042] The aforementioned square shaft structure 100 allows the elastic pin assembly 120 to extend or be compressed into the limiting hole 111, enabling the square shaft 110 to move flexibly within the lock body 220. During door lock installation, based on the actual installation scenario and the distance between the lock panel 210 and the first side surface 221 of the lock body 220, the square shaft 110 can be moved along its extension direction. A suitable elastic pin assembly 120 can be selected to pop out of the limiting hole 111 and abut against the first side surface 221 of the lock body 220. This adjusts the length of the end of the square shaft 110 extending beyond the first side surface 221 of the lock body 220. This allows the lock body 220 and lock panel 210 to be installed on door panels of different thicknesses without requiring cutting the square shaft 110, thus adapting to the assembly of the lock body 220 and lock panel 210 on door panels of varying thicknesses.

[0043] In one embodiment, see Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the elastic pin assembly 120 includes a first elastic element 121 and a stop element 122. The first elastic element 121 is disposed in the limiting hole 111, and the stop element 122 abuts against the first elastic element 121. The stop element 122 extends at least partially out of the limiting hole 111 due to the elastic force of the first elastic element 121. When the stop element 122 extends at least partially out of the limiting hole 111, it abuts against the first side surface 221 of the lock body 220 to adjust the length of the end of the square shaft 110 extending out of the first side surface 221 of the lock body 220. Since the end of the square shaft 110 extending out of the first side surface 221 of the lock body 220 is connected to the lock panel 210, by selecting a suitable position for the stop element 122 to abut against the first side surface 221 of the lock body 220, the lock body 220 and the lock panel 210 can be installed on door panels of different thicknesses. If the first elastic member 121 is retracted by force, the stop member 122 retracts into the limiting hole 111. Based on the distance between the lock panel 210 and the first side surface 221 of the lock body 220, the square shaft 110 can be moved along the extension direction of the square shaft 110, so that the stop member 122 at a suitable position can be selected to abut against the first side surface 221 of the lock body 220, thereby adjusting the length of the end of the square shaft 110 extending out of the first side surface 221 of the lock body 220.

[0044] In this embodiment, the first elastic element 121 is a return spring. When a force is applied to the stop member 122, the stop member 122 abuts against the first elastic element 121, causing the first elastic element 121 to undergo elastic deformation. The first elastic element 121 is compressed, and the stop member 122 retracts into the limiting hole 111, allowing the square shaft 110 to move within the lock body 220 along its extension direction. Conversely, when the force applied to the stop member 122 is removed, the first elastic element 121 elastically extends back to its original position. The first elastic element 121 pushes the stop member 122 at least partially out of the limiting hole 111 and abuts against the first side surface 221 of the lock body 220, thereby adjusting the length of the end of the square shaft 110 extending out of the first side surface 221 of the lock body 220. Of course, in other feasible embodiments, the first elastic element 121 can also be an elastic sheet, an elastic silicone element, or other elements capable of elastic deformation. This application does not limit the specific type of the first elastic element 121.

[0045] Further reading Figure 4 and Figure 5 As shown, the limiting hole 111 includes a first receiving hole 1111 and a second receiving hole 1112. The first receiving hole 1111 is used to receive the first elastic member 121, and the second receiving hole 1112 is used to receive the stop member 122. See also... Figure 4 As shown, the first receiving hole 1111 and the second receiving hole 1112 are coaxial and connected. The diameter of the first receiving hole 1111 is R1, and the diameter of the second receiving hole 1112 is R2, where R1 > R2, making the limiting hole 111 an overall stepped hole shape. Thus, the first elastic member 121 is disposed in the first receiving hole 1111, and the stop member 122 is disposed in the second receiving hole 1112. The first elastic member 121 can undergo elastic deformation within the first receiving hole 1111, and the first elastic member 121 can push the stop member 122 to extend or retract into the second receiving hole 1112, thereby adjusting the length of the end of the square shaft 110 extending out of the first side surface 221 of the lock body 220.

[0046] Furthermore, see Figure 4 and Figure 5 As shown, the first elastic element 121 is a spring, and its outer diameter is R3, where R1 ≥ R3 > R2. Thus, the outer diameter of the first elastic element 121 is less than or equal to the diameter of the first receiving hole 1111, enabling the first elastic element 121 to be installed within the first receiving hole 1111. During the elastic deformation of the first elastic element 121, since the diameter of the first receiving hole 1111 is larger than the diameter of the second receiving hole 1112, and the outer diameter of the first elastic element 121 is larger than the diameter of the second receiving hole 1112, the first elastic element 121 will not detach from the first receiving hole 1111 due to excessive deformation, thus confining the elastic deformation of the first elastic element 121 within the first receiving hole 1111.

[0047] Among them, see Figure 4 and Figure 5 As shown, the stop member 122 includes a stop portion 1221 and a connecting portion 1222 connected together. Preferably, the stop portion 1221 and the connecting portion 1222 are integrally formed by injection molding, extrusion or other methods to simplify the molding process of the stop member 122 and improve the structural strength of the stop member 122. The stop portion 1221 is movably disposed in the second receiving hole 1112 and can extend out of the second receiving hole 1112. When the stop portion 1221 extends out of the second receiving hole 1112, the stop portion 1221 abuts against the first side surface 221 of the lock body 220 to adjust the length of the end of the square shaft 110 extending out of the first side surface 221 of the lock body 220, so as to install the lock body 220 and the lock panel 210 on door panels of different thicknesses. The connecting part 1222 is movably disposed in the first receiving hole 1111, and the outer peripheral dimension of the connecting part 1222 is greater than R2. When the connecting part 1222 abuts against the first elastic member 121, and the first elastic member 121 undergoes elastic deformation and pushes the connecting part 1222 to move within the first receiving hole 1111, the stop part 1221 can extend or retract into the second receiving hole 1112. Since the outer peripheral dimension of the connecting part 1222 is greater than the diameter of the second receiving hole 1112, the connecting part 1222 will not pop out of the second receiving hole 1112 and disengage from the limiting hole 111 under the elastic action of the first elastic member 121. That is, the stop part 122 will not disengage from the limiting hole 111 under the elastic action of the first elastic member 121, ensuring the reliability of the extension and retraction of the elastic pin assembly 120.

[0048] In one embodiment, see Figures 3-5 As shown, the limiting hole 111 is a through hole, and the elastic pin assembly 120 also includes a plug 123. The plug 123 is embedded in the limiting hole 111, and the plug 123 abuts against the end of the first elastic member 121 away from the stop member 122, such that both ends of the first elastic member 121 abut against the stop member 122 and the plug 123 respectively. In this way, the limiting hole 111 can be made into a through hole, which facilitates the installation of the first elastic member 121 and the stop member 122. The plug 123 seals one end of the limiting hole 111, preventing the first elastic member 121 from sliding out of the limiting hole 111. The plug 123 allows the first elastic member 121 to undergo elastic deformation within the limiting hole 111, thereby pushing the stop member 122 to extend or retract into the limiting hole 111.

[0049] In one embodiment, see Figure 1 and Figure 6As shown, in the extending direction of the square shaft 110, the distance between two adjacent limiting holes 111 is d, where 5mm≤d≤10mm. Thus, by limiting the distance between two adjacent limiting holes 111 to 5mm~10mm, the length of the end of the square shaft 110 extending from the first side 221 of the lock body 220 can be adjusted within a large range. Furthermore, the lock body 220 and lock panel 210 can be installed on door panels of different thicknesses without requiring cutting the square shaft 110, thus enabling the assembly of the lock body 220 and lock panel 210 on door panels of different thicknesses.

[0050] Specifically, the distance d between two adjacent limiting holes 111 can be any one of 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. Of course, the distance d between two adjacent limiting holes 111 is not limited to the specific values ​​provided above, and can also be other values ​​within the range of 5mm to 10mm. Furthermore, in other feasible embodiments, the distance between two adjacent limiting holes 111 can also be other values ​​outside the range of 5mm to 10mm. This application does not impose any restrictions on the specific distance between two adjacent limiting holes 111, and it can be actually set based on the door panel thickness.

[0051] Further, see Figure 1 , Figure 3 and Figure 6 As shown, the square shaft 110 has at least two limiting holes 111 to adjust the length of the end of the square shaft 110 extending out of the first side 221 of the lock body 220 at at least two different positions. The specific number of limiting holes 111 spaced apart along the extension direction of the square shaft 110 is not limited in this application and can be set according to the actual thickness of various door panels commonly used in the market.

[0052] Additionally, see Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8As shown, this application also provides a lock 200, which includes a lock body 220, a front lock panel 211, a rear lock panel 212, and a square shaft structure 100. The front lock panel 211 and the rear lock panel 212 are respectively located on opposite sides of the lock body 220. If the lock body 220 is installed inside a door panel, the front lock panel 211 and the rear lock panel 212 are respectively installed on the door panel and located on opposite sides of the lock body 220. The end of the square shaft 110 extending from the first side 221 of the lock body 220 is connected to the rear lock panel 212 to achieve a transmission connection between the rear lock panel 212 and the lock body 220. Of course, in other feasible embodiments, the end of the square shaft 110 extending out of the second side of the lock body 220 can also be connected to the front lock panel 211 to realize the transmission connection between the front lock panel 211 and the lock body 220; or, the end of the square shaft 110 extending out of the first side 221 of the lock body 220 can be connected to the rear lock panel 212, and at the same time, the end of the square shaft 110 extending out of the second side of the lock body 220 can be connected to the front lock panel 211 to realize the transmission connection between the lock body 220, the front lock panel 211, and the rear lock panel 212.

[0053] When installing the lock 200, the square shaft 110 can be moved along the extension direction of the square shaft 110 based on the distance between the rear lock panel 212 and the first side 221 of the lock body 220, according to the actual situation of the installation scenario. The elastic pin assembly 120 is selected at a suitable position so that it pops out of the limiting hole 111 and abuts against the first side 221 of the lock body 220. This adjusts the length of the end of the square shaft 110 extending out of the first side 221 of the lock body 220, allowing the lock body 220 and the rear lock panel 212 to be installed on door panels of different thicknesses without the need to cut the square shaft 110. This enables the lock body 220 and the rear lock panel 212 to be assembled on door panels of different thicknesses, thus achieving the installation and fixation of the lock 200 on door panels of different thicknesses.

[0054] In one embodiment, see Figure 1 , Figure 6 and Figure 8 As shown, the rear lock panel 212 is provided with a square shaft hole 2121. The end of the square shaft 110 extending out of the first side 221 of the lock body 220 is inserted into the square shaft hole 2121. The connection between the rear lock panel 212 and the lock body 220 is achieved through the insertion of the square shaft 110 into the square shaft hole 2121. The length of the square shaft 110 inserted into the square shaft hole 2121 is not less than 8mm. The length of the square shaft 110 inserted into the square shaft hole 2121 can be 8mm, 10mm, 12mm, 15mm, 18mm, 20mm or other values, so that the square shaft 110 is inserted into the square shaft hole 2121 to a sufficient length to ensure the reliability of the connection between the square shaft 110 and the rear lock panel 212.

[0055] In one embodiment, the rear lock panel 212 is provided with a rotatable handle, and a square shaft hole 2121 is provided inside the handle. A square shaft 110 can be inserted into the square shaft hole 2121 inside the handle from the inside of the rear lock panel 212.

[0056] In one embodiment, see Figure 1 , Figure 4 , Figure 6 and Figure 8 As shown, a second elastic element 2122 is provided in the square shaft hole 2121. The second elastic element 2122 abuts against the end of the square shaft 110, and the deformation direction of the second elastic element 2122 is consistent with the extension direction of the square shaft 110. For example, when the square shaft 110 moves along its extension direction toward the direction close to the rear lock panel 212, the square shaft 110 acts on the second elastic member 2122. The second elastic member 2122 is compressed elastically to avoid interference with the movement of the square shaft 110, thus achieving smooth movement of the square shaft 110. After the elastic pin assembly 120 at a suitable position on the square shaft 110 pops out of the limiting hole 111 and abuts against the first side 221 of the lock body 220, the second elastic member 2122 applies an elastic force to the square shaft 110, so that the elastic pin assembly 120 remains in abutting against the first side 221 of the lock body 220, thereby installing the lock body 220 and the rear lock panel 212 on door panels of different thicknesses. Conversely, when the moving force acting on the square shaft 110 is removed and the elastic pin assembly 120 retracts into the limiting hole 111, the second elastic element 2122 elastically resets, and the second elastic element 2122 pushes the square shaft 110 to move away from the rear lock panel 212 to reset.

[0057] In this embodiment, the second elastic element 2122 is a return spring. When a force is applied to the square shaft 110 and the square shaft 110 moves toward the rear lock panel 212, the second elastic element 2122 abuts against the end of the square shaft 110, causing the second elastic element 2122 to elastically deform and compress, thus moving the square shaft 110 along its extension direction to adjust the length of the end of the square shaft 110 extending out of the first side 221 of the lock body 220. Conversely, when the force applied to the stop member 122 is removed and the elastic pin assembly 120 retracts to the limiting hole 111, the second elastic element 2122 elastically extends and resets, pushing the square shaft 110 to move away from the rear lock panel 212. Of course, in other feasible embodiments, the second elastic element 2122 can also be an elastic sheet, an elastic silicone element, or other elements capable of elastic deformation. This application does not limit the specific type of the second elastic element 2122.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0059] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A square shaft structure for connecting a lock face plate and a lock body, characterized by, The square shaft structure comprises: a square shaft movably inserted into the lock body along its extension direction, and spaced with a plurality of limiting holes along its extension direction, each of which is provided with an elastic pin assembly which can extend out of or retract into the limiting hole; wherein, during the movement of the square shaft, any elastic pin assembly can extend out of the limiting hole and abut against the first side of the lock panel towards the lock panel.

2. The square shaft structure according to claim 1, wherein The elastic pin assembly comprises a first elastic member and a stop member, the first elastic member is arranged in the limiting hole, the stop member abuts against the first elastic member and at least partially extends out of the limiting hole by the elastic force of the first elastic member; if the first elastic member is forced to retract, the stop member retracts into the limiting hole.

3. The square shaft structure according to claim 2, wherein The limiting hole comprises a first accommodating hole and a second accommodating hole, the first accommodating hole is used for accommodating the first elastic member, and the second accommodating hole is used for accommodating the stop member; wherein, the first accommodating hole and the second accommodating hole are coaxial and communicate, the hole diameter of the first accommodating hole is R1, and the hole diameter of the second accommodating hole is R2, wherein R1>R2.

4. The square shaft structure according to claim 3, characterized by The first elastic member is a spring, and the outer diameter of the first elastic member is R3, wherein R1≥R3>R2.

5. The square shaft structure according to claim 3, wherein The stop member comprises a stop portion and a connecting portion connected with each other, the stop portion is movably arranged in the second accommodating hole and can extend out of the second accommodating hole, and the connecting portion is movably arranged in the first accommodating hole, and the outer peripheral dimension of the connecting portion is greater than R2.

6. Square shaft structure according to any of claims 2-5, characterized in that The limiting hole is a through hole, and the elastic pin assembly further comprises a plug, the plug is embedded in the limiting hole and abuts against one end of the first elastic member away from the stop member.

7. Square shaft structure according to any of claims 1-5, characterized in that In the extension direction of the square shaft, the distance between two adjacent limiting holes is d, wherein 5mm≤d≤10mm.

8. A lock, characterized in that The lock comprises a lock body, a front lock panel, a rear lock panel and a square shaft structure as claimed in any one of claims 1-7; wherein, the front lock panel and the rear lock panel are respectively arranged on the opposite sides of the lock body, and the end of the square shaft extending out of the first side of the lock body is connected with the rear lock panel.

9. The lock of claim 8, wherein, The rear lock panel is provided with a square shaft hole, the end of the square shaft extending out of the first side of the lock body is inserted into the square shaft hole, and the length of the square shaft inserted into the square shaft hole is not less than 8mm.

10. The lock of claim 9, wherein, A second elastic member is arranged in the square shaft hole, the second elastic member abuts against the end of the square shaft, and the deformation direction of the second elastic member is consistent with the extension direction of the square shaft.

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