Push type circulation buckle structure

Abstract

The utility model relates to a kind of press type circulation buckle structure, including pedestal;The accommodating cavity for accommodating plug is formed in the pedestal;The cover plate is fixed with interval on the pedestal;Locking plate is movably arranged in the cavity between the cover plate and pedestal;The side of locking plate close to pedestal is formed into limit block outwardly protruding;The pedestal is equipped with the hole that is communicated with accommodating cavity and allows the limit block to pass;Elastic element is arranged between the cover plate and locking plate, which applies pressure to locking plate to make the limit block pass the hole and be engaged with the first limit slot on the plug;The unlocking pressure plate for pressing control locking plate is equipped on the pedestal to make the limit block on locking plate be unlocked from the first limit slot.The utility model realizes manual pressing operation to complete unlocking process by unlocking pressure plate, effectively avoids the dependence of special tool;Meanwhile, the integrated layout of locking plate and elastic element is optimized, which significantly reduces the structure occupied space.

Description

Technical Field

[0001] This utility model relates to the field of data cables, and in particular to a press-type recirculating buckle structure. Background Technology

[0002] In power management of virtual reality devices, data cables are typically secured using a lateral constraint mechanism. This mechanism requires a dedicated push pin to operate the latch structure when disconnecting, making daily use cumbersome and inefficient. Especially in emergency scenarios such as sudden power failures, it cannot quickly disconnect, posing a risk of device damage or safety hazards. For data cable locking technology, existing solutions usually add a latch component to the data cable plug end and a corresponding slot on the docking device end to achieve the locking function. However, this design inevitably increases the overall size of the plug. For the widely adopted Type-C interface, which is inherently miniaturized and needs to meet the requirements of universal compatibility with multiple devices, adding an extra latch structure severely weakens the interface's universality and interchangeability. At the same time, the internal space of the docking device is limited, and traditional locking devices, due to their large size, occupy too much internal space, hindering the development of thinner and lighter devices. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a press-type recirculating buckle structure.

[0004] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0005] A press-type recirculating snap-fit ​​structure includes a base; a receiving cavity for accommodating a plug is formed within the base; a cover plate is fixedly fixed to the base at intervals; a locking plate is movably disposed within the cavity between the cover plate and the base; a limiting block is formed by the locking plate protruding outward from the side near the base; a clearance hole is provided on the base, communicating with the receiving cavity and allowing the limiting block to pass through; an elastic element is provided between the cover plate and the locking plate, which applies pressure to the locking plate to cause the limiting block to engage with a first limiting groove on the plug through the clearance hole; and an unlocking pressure plate is provided on the base for pressing and controlling the locking plate to unlock the limiting block on the locking plate from the first limiting groove.

[0006] In one embodiment of this utility model, the corner of the locking plate is provided with a guide post; the base is provided with a guide groove that cooperates with the guide post; the unlocking pressure plate is connected with a push rod disposed in the guide groove and abutting against the guide post; the unlocking pressure plate pushes the locking plate to move away from the receiving cavity under the pressing control of the push rod so that the limiting block is unlocked from the first limiting groove.

[0007] In one embodiment of this utility model, each of the four corners of the locking plate is provided with a guide post; the unlocking pressure plate is provided with four push rods that cooperate with the guide posts.

[0008] In one embodiment of the present invention, the limiting block is provided with a guide slope that cooperates with the plug so that when the plug is inserted into the receiving cavity, the guide slope can be used to lift the locking plate.

[0009] In one embodiment of this utility model, the elastic element is a spring.

[0010] In one embodiment of this utility model, the spring is a tower spring; the large-diameter end of the tower spring cooperates with the locking plate, and the small-diameter end cooperates with the cover plate.

[0011] In one embodiment of this utility model, the height of the tower spring after ultimate compression is equal to the wire diameter of the spring; the locking plate is provided with a second limiting groove that cooperates with the tower spring; the groove depth of the second limiting groove is equal to the wire diameter of the tower spring so that the tower spring can be completely accommodated in the second limiting groove after compression, thereby reducing the height dimension occupied.

[0012] In one embodiment of this utility model, the cover plate is provided with a through hole; a fixing screw is provided in the through hole; a fixing post is provided on the base opposite to the through hole; the locking plate and the tower spring are sleeved on the fixing post; the fixing screw is connected to the fixing post to realize the fixed connection between the cover plate and the base.

[0013] In one embodiment of the present invention, the base is provided with a limiting part to prevent the unlocking plate from disengaging from the base.

[0014] The beneficial effects of this utility model are: the unlocking process is completed by manual pressing through the unlocking plate, which effectively avoids the reliance on special tools; at the same time, the integrated layout of the locking plate and the elastic element is optimized, which significantly reduces the space occupied by the structure and adapts to the universal requirements of miniaturized interfaces such as Type-C. It has the advantages of achieving quick manual unlocking without external tools, compact structure to adapt to miniaturized interfaces, and improved device versatility and ease of use. By using a first limiting groove on the plug, the size of the universal plug (Type-C plug) can be avoided, making the plug more universal. The tower spring structure can effectively reduce the height occupied, and the locking and unlocking of the plug can be achieved with a smaller locking structure, thereby achieving miniaturization. The tower spring has more than 40% higher energy storage capacity than the cylindrical spring in the same volume, thus effectively reducing the volume. In this application, the height of the tower spring after extreme compression is set to be equal to the wire diameter of the spring, so that the tower spring can be compressed to the limit and only occupy the height of the wire diameter. When the second limiting groove is set, it can be made not to occupy additional height after compression, further reducing the volume. The structure of multiple guide posts can ensure the linearity of the movement of the locking plate, and also ensure the linearity of the movement of the unlocking pressure plate, reducing the difficulty of unlocking and avoiding problems such as jamming when pressing to unlock. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the structure of this utility model;

[0018] Figure 3 yes Figure 2 Exploded view of the structure;

[0019] Explanation of reference numerals in the attached figures:

[0020] 100, Base; 101, Receiving cavity; 102, Clearance hole; 103, Guide groove; 104, Fixing post; 110, Spring; 120, Cover plate; 121, Through hole; 122, Fixing screw; 130, Locking plate; 131, Limiting block; 1311, Guide slope; 132, Guide post; 133, Second limiting groove; 140, Unlocking pressure plate; 141, Push rod; 200, Plug; 201, First limiting groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Examples, such as Figure 1-3 As shown:

[0025] This application proposes a press-type recirculating snap-fit ​​structure, including a base 100; a receiving cavity 101 for accommodating a plug 200 is formed in the base 100; a cover plate 120 is fixedly fixed on the base 100 at intervals; a locking plate 130 is movably disposed in the cavity between the cover plate 120 and the base 100; a limiting block 131 is formed by the side of the locking plate 130 near the base 100 protruding outward; a clearance hole 102 is provided on the base 100, which communicates with the receiving cavity 101 and allows the limiting block 131 to pass through; an elastic element is provided between the cover plate 120 and the locking plate 130 to apply pressure to the locking plate 130 so that the limiting block 131 is engaged with the first limiting groove 201 on the plug 200 through the clearance hole 102; and an unlocking pressure plate 140 is provided on the base 100 for pressing and controlling the locking plate 130 so that the limiting block 131 on the locking plate 130 is unlocked from the first limiting groove 201.

[0026] The accommodating cavity 101 refers to the space formed inside the base 100 for accommodating the plug 200. In practical applications, it can be implemented using a groove or chamber structure, such as by creating a hole in the base 100. This is mainly to provide a dedicated area for the plug 200 to be inserted without changing the external dimensions of the connector. Furthermore, the locking plate 130 refers to a component that is movably disposed in the cavity between the cover plate 120 and the base 100, mainly for achieving a limiting function. Thus, the limiting block 131 refers to the protruding part of the locking plate 130 near the base 100. It can be implemented using a protrusion or bump structure, such as by providing a metal protrusion on the locking plate 130. This is mainly to cooperate with the first limiting groove 201 on the plug 200 to achieve mechanical locking. Specifically, the clearance hole 102 refers to the hole on the base 100 that communicates with the receiving cavity 101. In practical applications, it can be implemented using a through hole 121 or a slot structure, such as an elongated hole in the wall of the base 100. This is mainly to allow the limiting block 131 to extend into the receiving cavity 101 and interact with the plug 200. As a preferred embodiment, the elastic element refers to the component that applies pressure to the locking plate 130. Its main purpose is to automatically compress and release pressure when the plug 200 is inserted, causing the limiting block 131 to engage with the first limiting groove 201 to achieve self-locking. Furthermore, the unlocking pressure plate 140 refers to the component used to press and control the locking plate 130. In practical applications, it can be implemented using a button or lever structure. Its main purpose is to quickly unlock the limiting block 131 by simply pressing and pushing the locking plate 130 to move it, thus disengaging it from the first limiting groove 201. It should be noted that, as... Figure 1 As shown, in actual use, the unlocking plate 140 is usually located at the top for easy pressing.

[0027] When the plug 200 is inserted into the receiving cavity 101, the plug 200 pushes the limiting block 131, causing the locking plate 130 to move within the cavity and compress the elastic element. After the plug 200 is fully inserted, the restoring force of the elastic element drives the limiting block 131 to engage with the first limiting groove 201 of the plug 200 through the clearance hole 102, thus achieving mechanical locking. When unlocking is required, the user directly presses the unlocking plate 140, which transmits force to the locking plate 130, causing the locking plate 130 to move away from the receiving cavity 101. The limiting block 131 disengages from the first limiting groove 201, thereby quickly disconnecting the plug 200 from the device. The dimensions of the accommodating cavity 101 are precisely adapted to the outline of the standard Type-C plug 200; the locking plate 130 can specifically be made of a 0.3 mm thick steel spring 110 or a plastic plate of a certain thickness; the elastic element can specifically be a helical compression spring, the free length of which matches the cavity height to ensure effective compression stroke; the unlocking plate 140 can specifically be designed as a polyoxymethylene button with anti-slip texture on the surface for easy one-handed operation. Preferably, the locking plate 130 and the unlocking plate 140 are arranged in parallel, so that both the locking plate 130 and the unlocking plate 140 can be made of thin plate structure, thereby reducing the space occupied by multiple heights. (See [height space reference]). Figure 1 The dimensions in the vertical direction are optimized; at the same time, the locking function is implemented entirely inside the docking device, and the plug 200 does not need to add a buckle structure, but only a recessed first limiting groove 201 structure is set, which minimizes the impact on the plug 200 and maintains the original size and universal compatibility of the Type-C connector; furthermore, the compact cavity structure formed by the base 100 and the cover plate 120 optimizes the internal space layout and significantly reduces the space occupied by the device.

[0028] In one embodiment of the present invention, a guide post 132 is provided at the corner of the locking plate 130; a guide groove 103 is provided on the base 100 to cooperate with the guide post 132; a push rod 141 is connected to the unlocking pressure plate 140 and is disposed in the guide groove 103 to abut against the guide post 132; the unlocking pressure plate 140 pushes the locking plate 130 to move away from the receiving cavity 101 under the pressing control of the push rod 141 so that the limiting block 131 is unlocked from the first limiting groove 201.

[0029] The guide post 132 refers to the protruding structure located at the corner of the locking plate 130. It can be implemented using a cylindrical or square column structure. Its purpose is to constrain the degree of freedom of movement of the locking plate 130 and prevent it from rotating or shifting laterally during the unlocking process. The guide groove 103 can be understood as a channel on the base 100 that matches the guide post 132. It can be implemented using different forms such as a straight groove or a variable cross-section groove. Its purpose is to provide a rigid sliding path for the guide post 132 and ensure that the locking plate 130 moves stably in a predetermined direction. The push rod 141 specifically refers to the component extending from the unlocking pressure plate 140 for transmitting thrust. It can be implemented using a rigid rod or a detachable linkage structure. Its purpose is to accurately apply the pressing force of the unlocking pressure plate 140 to the initial contact point of the guide post 132, reducing directional deviation and energy loss during the force transmission process.

[0030] When the user applies pressure to the unlocking plate 140, the push rod 141 directly abuts against the guide post 132 and pushes it to slide along the guide groove 103. The lateral constraint of the guide groove 103 on the guide post 132 effectively suppresses the rotational freedom of the locking plate 130. At the same time, the sliding trajectory of the guide post 132 in the guide groove 103 is strictly limited to a straight line away from the receiving cavity 101, thereby ensuring the smooth movement of the locking plate 130 as a whole, allowing the limiting block 131 to reliably disengage from the first limiting groove 201. This structural design avoids movement trajectory deviation caused by assembly gaps or external force interference, and can maintain the stability of the unlocking operation, especially under the space constraints of miniaturized equipment. Through the above solution, this application effectively solves the technical problem that the locking plate 130 is prone to skewness and jamming during movement.

[0031] In one embodiment of the present invention, a guide post 132 is provided at each of the four corners of the locking plate 130; and four push rods 141 that cooperate with the guide posts 132 are provided on the unlocking pressure plate 140.

[0032] Specifically, the guide post 132 refers to the protruding structure set at the corner of the locking plate 130 to limit the movement trajectory. Its purpose is to provide a multi-point support path for the locking plate 130 and ensure directional stability during the movement. The push rod 141 refers to the driving component on the unlocking pressure plate 140 used to transmit pressing force. It can be implemented by adopting a cylindrical structure that matches the guide post 132. Its purpose is to establish a force transmission channel between the unlocking pressure plate 140 and the locking plate 130 to avoid stress concentration caused by single-point force.

[0033] The solution in this application utilizes the precise correspondence between the guide posts 132 at the four corners of the locking plate 130 and the four push rods 141 on the unlocking plate 140. This ensures that when the unlocking plate 140 is pressed, the push rods 141 act synchronously on the four corners of the locking plate 130. Based on the geometric symmetry of the rectangular locking plate 130, the four-point distributed guide posts 132 constrain the degrees of freedom of the locking plate 130, uniformly converting the vertical pressing force of the unlocking plate 140 into the horizontal translational motion of the locking plate 130. This eliminates the deflection torque caused by uneven force, ensuring that the limiting block 131 disengages from the first limiting groove 201 of the plug 200 along a straight trajectory, ultimately achieving the overall synchronous displacement of the locking plate 130. This effectively avoids the jamming problem that easily occurs when unlocking in a small space.

[0034] In one embodiment of the present invention, the limiting block 131 is provided with a guide slope 1311 that cooperates with the plug 200 so that when the plug 200 is inserted into the receiving cavity 101, the locking plate 130 can be lifted up by the guide slope 1311.

[0035] Among them, the guide slope 1311 refers to an inclined surface structure, which can be implemented by a continuous and smooth slope or a segmented transition slope. Its purpose is to convert the horizontal pushing force of the plug 200 into a vertical component force, thereby achieving the smooth lifting of the locking plate 130 and avoiding insertion resistance caused by rigid obstruction.

[0036] When the plug 200 is inserted along the direction of the receiving cavity 101, its front end contacts the guide slope 1311. The inclination angle of the guide slope 1311 decomposes the horizontal insertion force of the plug 200 into a vertically upward component force. This component force acts on the locking plate 130, pushing the locking plate 130 to move upward against the resistance of the elastic element, so that the limiting block 131 temporarily disengages from the path of the plug 200, thereby allowing the plug 200 to slide smoothly into the receiving cavity 101. After the plug 200 is fully inserted, the restoring force of the elastic element presses the locking plate 130 down, so that the limiting block 131 engages with the first limiting groove 201 on the plug 200 through the relief hole 102, thereby achieving reliable locking.

[0037] In one embodiment of this utility model, the elastic element is a spring 110.

[0038] In practical applications, an elastic element refers to a mechanical component that can deform under the action of external force and return to its original shape after the external force is removed to provide restoring force. It can be implemented in the form of a helical spring 110, a leaf spring, or a rubber elastomer.

[0039] In one embodiment of this utility model, the spring 110 is a tower spring; the large-diameter end of the tower spring cooperates with the locking plate 130, and the small-diameter end cooperates with the cover plate 120.

[0040] Among them, the tower spring refers to a helical spring structure with axial taper, which can be realized by winding spring 110 steel wire into a continuously variable diameter conical coil. Its purpose is to optimize the height occupation by achieving the step-by-step nesting of coils during compression through the conical design. The large diameter end cooperates with the locking plate 130, which can be that the large end of the tower spring directly forms a surface contact or line contact with the plane of the locking plate 130, or the pressure is dispersed through an elastic transition member. Its purpose is to ensure that the locking plate 130 is subjected to uniform force and avoid local stress concentration that leads to displacement during movement. The cooperation between the small diameter end and the cover plate 120 can be understood as the small end of the tower spring forming a point contact or line contact with the support area of ​​the cover plate 120.

[0041] Specifically, the solution of this application utilizes the conical structure of the tower spring to ensure that during the insertion of the plug 200 into the receiving cavity 101, the limiting block 131 moves upward under the action of the guide inclined surface 1311 and compresses the tower spring. At this time, the cooperation between the large-diameter end and the locking plate 130 ensures that the pressure is evenly transmitted to the limiting block 131, while the cooperation between the small-diameter end and the cover plate 120 restricts the lateral displacement of the tower spring. Thus, under the compression state, the tower spring coil is nested axially in stages, significantly shortening the overall height while maintaining a stable output of elastic restoring force. When the plug 200 is fully inserted, the tower spring pushes the locking plate 130 to reset, causing the limiting block 131 to engage with the first limiting groove 201 of the plug 200 to complete the locking. This structural combination effectively controls the space occupation in the height direction while maintaining a reliable locking function.

[0042] In one embodiment of this utility model, the height of the tower spring after ultimate compression is equal to the wire diameter of the spring 110; the locking plate 130 is provided with a second limiting groove 133 that cooperates with the tower spring; the groove depth of the second limiting groove 133 is equal to the wire diameter of the tower spring so that the tower spring can be completely accommodated in the second limiting groove 133 after compression, thereby reducing the height dimension occupied.

[0043] The maximum compression height of the tower spring refers to the minimum height reached by the tower spring under maximum compression. It can be designed to be equal to the wire diameter of the spring 110 to ensure that the spring 110 retains only the thickness of a single spring 110 wire after compression, avoiding the excess height generated after compression of the traditional spring 110. The second limiting groove 133 refers to the groove structure set on the locking plate 130 for accommodating the tower spring. It can be circular, square, or other shapes adapted to the cross-section of the tower spring to provide a dedicated accommodating space for the tower spring. The groove depth equal to the wire diameter of the tower spring means that the depth of the limiting groove is strictly matched with the wire diameter of the spring 110. It can be precisely machined to ensure that the tower spring is completely embedded in the groove after compression, eliminating surface protrusions and thus reducing the overall height occupied.

[0044] Specifically, the solution of this application sets the ultimate compression height of the tower spring to be equal to the wire diameter of the spring 110, so that the tower spring can reach the theoretical minimum compression state when compressed, retaining only the diameter height of a single spring 110 wire; at the same time, the depth of the second limiting groove 133 provided on the locking plate 130 is strictly consistent with the wire diameter of the spring 110, providing a precisely matched accommodating space for the tower spring, effectively restraining the lateral expansion trend of the spring 110 during the compression process; therefore, the tower spring can be seamlessly embedded in the second limiting groove 133 when fully compressed, without producing any surface protrusions, thereby eliminating the extra occupation of the overall height by the spring 110, significantly optimizing the layout efficiency of the device in a limited space, while maintaining the reliable reset function of the elastic element.

[0045] In one embodiment of this utility model, the cover plate 120 is provided with a through hole 121; a fixing screw 122 is provided in the through hole 121; a fixing post 104 is provided on the base 100 opposite to the through hole 121; a locking plate 130 and a tower spring are sleeved on the fixing post 104; the fixing screw 122 is connected to the fixing post 104 to realize the fixed connection between the cover plate 120 and the base 100.

[0046] The through hole 121 refers to the opening structure on the cover plate 120, which can be circular, square, or other geometrically shaped holes. Its purpose is to provide a precise installation channel for the fixing screw 122, ensuring accurate alignment during assembly. The fixing screw 122 can be a screw, bolt, or other fastening element, its purpose being to provide reliable fixing force through mechanical connection, achieving a stable connection between the cover plate 120 and the base 100. Specifically, the fixing post 104 refers to the protruding columnar support structure on the base 100, which can be made of metal or engineering plastic, and its purpose is to serve as a core positioning point, ensuring... To ensure a precise fit between the cover plate 120 and the through hole 121, misalignment is avoided. Furthermore, the locking plate 130 and the tower spring being sleeved on the fixing post 104 means that the locking plate 130 and the tower spring are jointly installed on the fixing post 104. This can be achieved using a sliding fit or a clearance fit, aiming to integrate support functions, eliminate the need for additional supports, and thus reduce height occupation. In practical applications, the fixing screw 122 being connected to the fixing post 104 means that the fixing screw 122 and the fixing post 104 form a connection relationship. This can be achieved using a threaded connection or a snap-fit ​​method, aiming to simplify the overall structure and improve assembly efficiency.

[0047] In one embodiment of the present invention, the base 100 is provided with a limiting and unlocking pressure plate 140 to prevent the unlocking pressure plate 140 from disengaging from the base 100.

[0048] The limiting part is not shown in the figure. It can be understood that the limiting part has a structure for preventing detachment. It can be a limiting protrusion or other commonly used limiting structure in the art, which is a well-known and commonly used design for those skilled in the art. It will not be described in detail here.

[0049] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A press-type recirculating buckle structure, characterized in that: Includes a base (100); a receiving cavity (101) for accommodating a plug (200) is formed within the base (100); a cover plate (120) is fixedly fixed to the base (100) at intervals; a locking plate (130) is movably disposed within the cavity between the cover plate (120) and the base (100); a limiting block (131) is formed by the side of the locking plate (130) near the base (100) protruding outward; the base (100) is provided with a connection that communicates with the receiving cavity (101) and allows the limiting block (131) to move. The cover plate (120) and the locking plate (130) are provided with an elastic element that applies pressure to the locking plate (130) so that the limiting block (131) engages with the first limiting groove (201) on the plug (200) through the clearance hole (102); the base (100) is provided with an unlocking pressure plate (140) for pressing and controlling the locking plate (130) so that the limiting block (131) on the locking plate (130) is unlocked from the first limiting groove (201).

2. The press-type recirculating buckle structure according to claim 1, characterized in that: The locking plate (130) has a guide post (132) at its corner; the base (100) has a guide groove (103) that cooperates with the guide post (132); the unlocking plate (140) is connected to a push rod (141) located in the guide groove (103) and abutting against the guide post (132); the unlocking plate (140) pushes the locking plate (130) in a direction away from the receiving cavity (101) under the pressing control of the push rod (141) so that the limiting block (131) is unlocked from the first limiting groove (201).

3. The press-type recirculating buckle structure according to claim 2, characterized in that: The locking plate (130) has a guide post (132) at each of its four corners; the unlocking plate (140) has four push rods (141) that cooperate with the guide posts (132).

4. The press-type recirculating buckle structure according to claim 1, characterized in that: The limiting block (131) is provided with a guide slope (1311) that cooperates with the plug (200) so that when the plug (200) is inserted into the receiving cavity (101), the locking plate (130) can be lifted by the guide slope (1311).

5. The press-type recirculating buckle structure according to claim 1, characterized in that: The elastic element is a spring (110).

6. The press-type recirculating buckle structure according to claim 5, characterized in that: The spring (110) is a tower spring; the large-diameter end of the tower spring is engaged with the locking plate (130), and the small-diameter end is engaged with the cover plate (120).

7. A press-type recirculating buckle structure according to claim 6, characterized in that: The height of the tower spring after ultimate compression is equal to the wire diameter of the spring (110); the locking plate (130) is provided with a second limiting groove (133) that cooperates with the tower spring; the groove depth of the second limiting groove (133) is equal to the wire diameter of the tower spring so that the tower spring can be completely accommodated in the second limiting groove (133) after compression, thereby reducing the height dimension occupied.

8. A press-type recirculating buckle structure according to claim 6, characterized in that: The cover plate (120) is provided with a through hole (121); a fixing screw (122) is provided in the through hole (121); a fixing post (104) is provided on the base (100) opposite to the through hole (121); the locking plate (130) and the tower spring are sleeved on the fixing post (104); the fixing screw (122) is connected to the fixing post (104) to realize the fixed connection between the cover plate (120) and the base (100).

9. A press-type recirculating buckle structure according to claim 1, characterized in that: The base (100) is provided with a limiting unlocking plate (140) to prevent the unlocking plate (140) from disengaging from the base (100).

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