Tree-shaped buckle for fixing connecting piece

Abstract

The utility model discloses a tree-shaped buckle used for fixing a connecting piece. The tree-shaped buckle solves the problem that connection stability and adaptability are poor. Comprising a tree-shaped buckle body, a buckle cap and a buckle base, the tree-shaped buckle body comprises a central column and multiple layers of inverted-cone-shaped buckle pieces distributed in the axial direction of the central column, the buckle pieces and the central column are integrally formed, and the buckle pieces and the central column axially form a cone angle inclining outwards; the multiple layers of buckle pieces form an axial distribution type compressing structure so as to elastically compress a mounting hole of a mounted component. The buckling block is used for being clamped into an external connecting piece to form locking; the buckling block can elastically sink to be separated from the groove by pressing the elastic pressing arm. An axial distribution type pressing structure formed by the multiple layers of inverted-cone-shaped buckle pieces can provide multi-point elastic tight contact with the inner wall of the mounting hole on multiple layers, the friction force between the buckle and the mounting hole is enhanced, the buckle is effectively prevented from loosening or falling off under the complex working conditions of vibration, impact and the like, the connection stability is remarkably improved, and the service life of the buckle is prolonged. And meanwhile, the failure problem caused by stress concentration of a traditional single-point buckle is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a tree-shaped buckle for fixing connectors. Background Technology

[0002] In the assembly of various industrial products, electronic equipment, and building components, fasteners are typically secured using methods such as screw tightening, adhesive bonding, or traditional snap-fit ​​connections. Among these, snap-fit ​​connections have gradually become the mainstream choice due to their advantages of convenient assembly and tool-free operation. However, existing snap-fit ​​structures still have significant technical shortcomings.

[0003] On the one hand, traditional snap-fit ​​connections are relatively simple, with common single-layer hooks or single-point snap-fit ​​structures relying heavily on a single or a few contact points for locking. If this point experiences stress concentration due to manufacturing tolerances, material fatigue, unexpected lateral forces, or long-term creep, it is highly susceptible to plastic deformation or even fracture, leading to connection failure. Under external forces, especially in complex conditions such as vibration and impact, loosening or even detachment can easily occur, resulting in poor connection stability and failing to meet the high reliability requirements of applications. On the other hand, single-layer snap-fits have stringent requirements for the precision of the mounting hole dimensions. When there are errors in the hole diameter or depth, the adaptability and fault tolerance are poor, potentially leading to installation that is too loose or too tight. This affects assembly efficiency and can easily degrade the overall structural performance due to improper installation. Furthermore, existing snap-fits lack a quick locking and releasing mechanism for the connecting parts, often requiring tools for prying during disassembly, which is not only inconvenient but also prone to damaging the surface of the connecting parts. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the prior art by providing a tree-shaped buckle for fixing connectors, thus solving the problems of poor connection stability and adaptability.

[0005] The technical solution of this utility model includes a tree-shaped buckle body, a buckle cap, and a buckle base. The tree-shaped buckle body includes a central column and multiple layers of inverted conical buckle pieces distributed along the axial direction of the central column. The buckle pieces are integrally formed with the central column, and the buckle pieces and the central column form an outwardly inclined conical angle. The buckle cap is connected to the top of the tree-shaped buckle body and extends outward to abut against the surface of the component to be installed. The buckle base includes a pair of symmetrically arranged guide arms and a spring-loaded arm located between the two guide arms. The guide arms are used to connect with external connectors, and the spring-loaded arm is provided with a buckle block. The multiple layers of buckle pieces form an axially distributed pressing structure to elastically press the mounting hole of the component to be installed. The buckle block is used to snap into the corresponding position of the external connector to form a lock. Pressing the spring-loaded arm can cause the buckle block to elastically sink and disengage from the groove.

[0006] The above technical solution utilizes a multi-layered inverted conical clip structure with an axially distributed clamping mechanism. This structure provides multi-point elastic and tight contact with the inner wall of the mounting hole at multiple levels, enhancing the friction between the clip and the mounting hole. This effectively prevents the clip from loosening or falling off under complex working conditions such as vibration and impact, significantly improving connection stability. It also effectively avoids the failure problem caused by stress concentration in traditional single-point clips. The guide arm on the clip seat facilitates connection with external connectors. The cooperation between the spring-loaded arm and the clip block makes locking and unlocking operations of the connectors simple, achieving fast and reliable locking and fixing, and improving assembly efficiency. The clip cap extends outward to abut against the surface of the installed component, dispersing installation pressure and preventing the clip from going too deep, while further enhancing the overall connection stability. Disassembly requires no tools, is inconvenient, and is less likely to damage the surface of the connectors. It is particularly suitable for fixing connectors that require frequent disassembly and assembly, solving the technical problem of traditional clips easily loosening under complex working conditions.

[0007] In one possible design, the top of the central column is provided with several radially protruding limiting bosses, the limiting platform is located below the buckle cap, and the outer diameter formed by the several limiting bosses is smaller than the outer diameter of the buckle piece.

[0008] With the above design, the limiting boss can limit the buckle cap during the buckle installation process, ensuring the buckle is installed in an accurate position and preventing excessive offset. This ensures that the multi-layer buckle is in the optimal working position, guaranteeing that the buckle has sufficient elastic clamping force and avoiding excessive deformation or damage to the buckle due to excessive deviation of the buckle from the center of the mounting hole, thus improving the accuracy and reliability of the buckle installation.

[0009] In one possible design, the cone angle is between 30 and 70 degrees.

[0010] By adopting the above design, this angle range achieves a balance between insertion resistance and fastening force. This allows the clip to generate sufficient elastic deformation to adapt to different sizes of mounting holes when inserted into the mounting hole, ensuring a tight fit with the hole wall and enhancing connection stability. At the same time, it ensures that during installation and removal, the clip will not experience excessive insertion resistance due to an excessively large angle or insufficient fastening force due to an excessively small angle. This achieves a balance between convenient installation and stable connection, improving the applicability and versatility of the clip.

[0011] In one possible design, a single fastener consists of at least two independent sector-shaped segments, with the sector-shaped segments on the same layer distributed at intervals along the circumference of the central column.

[0012] The above design allows for a certain gap between the two parts when the fastener contacts the mounting hole. Each layer of the fastener can independently and more flexibly undergo elastic deformation under pressure, which can better adapt to the shape error and deformation of the mounting hole. This improves the adaptability and fault tolerance of the fastener to the size deviation and irregular shape of the mounting hole. At the same time, the split structure can disperse stress when subjected to force, reducing the risk of fastener damage due to stress concentration and improving the service life and reliability of the fastener.

[0013] In one possible design, the bottom end of the central column is coaxially provided with an inverted truncated cone that is smaller at the bottom and larger at the top.

[0014] The above design serves as a guide in the initial stage of inserting the snap-in into the mounting hole, making it easier for the snap-in to align and enter the mounting hole, thus simplifying the assembly operation. At the same time, after the snap-in is fully inserted, the conical surface of the inverted truncated cone structure can provide additional auxiliary support and anti-dislodgement resistance, especially when subjected to axial tensile force, which helps to enhance the snap-in's holding force.

[0015] In one possible design, the spring-loaded arm has a cantilever structure, with its base fixedly connected to the buckle seat. The main body of the spring-loaded arm extends obliquely upward and forms a buckle block on the top surface of the spring-loaded arm.

[0016] With the above design, the structure gives the spring-loaded arm good elasticity. When pressed, it can easily and elastically sink down, allowing the buckle to disengage from the corresponding position of the external connector for quick unlocking. When not pressed, the spring-loaded arm uses its own elasticity to firmly lock the buckle into the groove, ensuring the reliability of the connector connection. The operation is simple and the connection is stable.

[0017] In one possible design, the cap is disc-shaped.

[0018] The above design features a simple structure and easy manufacturing. The disc-shaped cap can evenly abut against the surface of the installed component, effectively dispersing the installation pressure and avoiding local stress concentration. At the same time, it provides a large contact area, enhances the fit with the installed component, and further improves the stability and reliability of the snap-fit ​​connection.

[0019] In one possible design, the cap is a rectangular piece with an arched shape.

[0020] The above design provides effective contact and limiting functions, while its arched shape itself has a certain degree of elasticity, which can withstand greater pressing pressure; the rectangular sheet structure provides a certain degree of torsional resistance, enhancing the stability of the buckle after installation, and is especially suitable for application scenarios that require resistance to a certain torque. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model;

[0022] Figure 2 This is a perspective sectional view of a specific embodiment of the present utility model;

[0023] Figure 3 This is a structural diagram showing the connection state of a specific embodiment of the present invention with an external connector;

[0024] Figure 4 This is a structural schematic diagram of a specific embodiment of the present invention and the disassembled external connector;

[0025] Figure 5 This is a schematic diagram of another embodiment of the present utility model. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of another embodiment of the present utility model. Figure 2 ;

[0027] Among them, 1. Tree-shaped buckle body; 11. Central column; 12. Buckle piece; 121. Fan-shaped split body; 13. Limiting boss; 14. Inverted cone; 2. Buckle cap; 3. Buckle seat; 31. Guide arm; 32. Spring-loaded arm; 321. Buckle block; 4. Connector; 41. Locking block. Detailed Implementation

[0028] like Figures 1 to 4 The tree-shaped fastener shown is mainly composed of a tree-shaped fastener body 1, a fastener cap 2, and a fastener base 3. The tree-shaped fastener body 1 includes a central post 11, with multiple layers of inverted conical fastener tabs 12 distributed axially along the central post 11. The fastener tabs 12 and the central post 11 are integrally injection molded from engineering plastic, and the fastener tabs 12 and the central post 11 form an outwardly inclined conical angle axially. The multiple layers of fastener tabs 12 together constitute an axially distributed pressing structure. When the tree-shaped fastener body 1 is inserted into the mounting hole of the component being installed, each layer of fastener tabs 12 independently undergoes radial elastic deformation, forming multi-point pressing contact with the hole wall, significantly improving its resistance to vibration and loosening. The fastener cap 2 is connected to the top of the tree-shaped fastener body 1 and extends horizontally outward. Its lower surface abuts against the surface of the component being installed, preventing the fastener from inserting excessively. The fastener base 3 is located below the tree-shaped fastener body 1 and includes a pair of symmetrically arranged guide arms 31 and a spring-loaded arm 32 located between the two guide arms 31. The guide arm 31 is used to guide the insertion of the external connector, and the top surface of the spring-loaded arm 32 is provided with a protruding latch 321. When the connector is inserted into place, the latch 321 engages with the latch of the connector to lock it in place; pressing the end of the spring-loaded arm 32 can make it bend down elastically, causing the latch 321 to sink and disengage from the connector, so as to achieve quick unlocking with one hand.

[0029] During actual installation, the tree-shaped buckle 1 is inserted into the mounting hole of the component being installed. The multi-layered inverted conical buckle pieces 12, due to their elastic deformation, make close contact with the inner wall of the mounting hole at multiple points, forming an axially distributed compression structure. This greatly enhances the friction between the buckle and the mounting hole, effectively preventing the buckle from loosening and falling off under complex working conditions. At the same time, the buckle cap 2 abuts against the surface of the component being installed, dispersing the installation pressure and further improving the connection stability. The guide arm 31 connects to the external connector, and the spring-loaded arm 32 and the buckle block 321 cooperate to achieve convenient locking and unlocking of the connector, improving assembly efficiency.

[0030] The top of the central post 11 has four radially protruding limiting bosses 13, located below the buckle cap 2, and the outer diameter formed by these limiting bosses 13 is smaller than the outer diameter of the buckle piece 12. When the buckle is subjected to radial force, the limiting bosses 13 abut against the mounting holes of the installed component, restricting the position of the buckle and preventing it from excessively shifting after radial pressure. In this way, it can ensure that the multi-layer buckle piece 12 is in the optimal working position, guarantee that the buckle piece 12 generates sufficient elastic clamping force, and at the same time avoid excessive deformation or damage to the buckle piece 12 due to buckle installation misalignment, thereby improving the accuracy and reliability of buckle installation.

[0031] The cone angle is set between 30 and 70 degrees, preferably 45 or 60 degrees. During the insertion of the snap fastener into the mounting hole, this angle range allows the snap fastener 12 to produce appropriate elastic deformation, which can both tightly fit the inner wall of mounting holes of different sizes to enhance connection stability and ensure that the insertion resistance is moderate, avoiding difficulty in insertion due to an excessively large angle or insufficient tightening force due to an excessively small angle.

[0032] Each clip 12 consists of two independent sector-shaped segments 121, with the sector-shaped segments 121 on the same layer distributed circumferentially along the central post 11. When the clip is inserted into the mounting hole, the segmented structure of the clip 12 creates gaps between the segments, allowing each segment to independently and flexibly undergo elastic deformation, thus better adapting to the shape errors and deformations of the mounting hole. Even if the mounting hole has slight ellipticity or local dimensional deviations, each sector-shaped segment 121 can better fit the hole wall, maintaining uniform and reliable clamping pressure, and improving the connection stability of the clip under different working conditions.

[0033] The bottom end of the central column 11 is coaxially provided with an inverted truncated cone 14, which is smaller at the bottom and larger at the top, with the cone surface making an angle of 50° with the axis. During snap-fit ​​installation, the inverted truncated cone 14 first acts as a guide, guiding the snap-fit ​​to align smoothly and insert into the mounting hole, reducing installation difficulty and improving assembly efficiency. Once the snap-fit ​​is fully inserted, the cone surface of the inverted truncated cone 14 contacts the inner wall of the mounting hole, providing additional auxiliary support and anti-disengagement resistance, especially enhancing the snap-fit's holding force when it is subjected to axial tensile force.

[0034] The spring-loaded arm 32 has a cantilever structure, with its base fixedly connected to the buckle 3. The main body of the spring-loaded arm 32 extends obliquely upward at a 15° angle, forming a buckle block 321 on its top surface. Utilizing the lever principle, it achieves effortless pressing. When connecting a connector, the connector's latch is passed through the guide arm 31, and the buckle block 321 automatically engages with the connector's latch to lock it in place. To disassemble the connector, pressing the spring-loaded arm 32 causes it to elastically sink, disengaging the buckle block 321 from the connector's latch, achieving quick unlocking. The operation is simple, and the connection is stable and reliable.

[0035] The buckle 2 is a rectangular plate with an arched shape. This shape, with its arched form, gives the buckle 2 a certain degree of elasticity, allowing it to withstand greater pressing pressure and better adapt to different stress conditions during installation. The rectangular plate structure provides torsional resistance, effectively resisting torque after installation, making it suitable for applications requiring high stability and torque resistance.

[0036] Another embodiment, which differs from the specific embodiments described above, is as follows: Figure 5 , Figure 6 As shown, the buckle cap 2 is disc-shaped. The disc-shaped buckle cap 2 has a simple structure and is easy to manufacture. During installation, the disc-shaped buckle cap 2 can abut against the surface of the installed component over a large area and evenly, effectively dispersing the installation pressure. Furthermore, the larger contact area enhances the fit with the installed component, further improving the stability and reliability of the snap-fit ​​connection.

Claims

1. A tree fastener for securing a connection, characterised in that: The fastener includes a tree-shaped fastener body (1), a fastener cap (2), and a fastener base (3). The tree-shaped fastener body (1) includes a central post (11) and multiple layers of inverted conical fastener pieces (12) distributed along the axial direction of the central post (11). The fastener pieces (12) are integrally formed with the central post (11), and the fastener pieces (12) and the central post (11) form an outwardly inclined conical angle in the axial direction. The fastener cap (2) is connected to the top of the tree-shaped fastener body (1) and extends outward to abut against the surface of the component to be installed. The fastener base (3) includes a pair of symmetrically arranged guide arms (31) and a spring-loaded arm (32) located between the two guide arms (31). The guide arms (31) are used to connect with an external connector (4), and the spring-loaded arm (32) is provided with a fastener block (321). Among them, the multi-layered fasteners (12) form an axially distributed pressing structure to elastically press the mounting holes of the installed components; the fastener block (321) is used to snap into the corresponding position of the external connector (4) to form a lock; pressing the spring arm (32) can make the fastener block (321) elastically sink and disengage from the groove.

2. The tree fastener for securing a connector as claimed in claim 1, wherein: The top of the central column (11) is provided with several radially protruding limiting bosses (13), the limiting bosses are located below the buckle cap (2) and the outer diameter formed by the several limiting bosses (13) is smaller than the outer diameter of the buckle piece (12).

3. The tree fastener for securing a connector as claimed in claim 1, wherein: The angle of the cone is between 30 and 70 degrees.

4. The tree fastener for securing a connector according to claim 1, wherein: Each of the aforementioned clips (12) consists of at least two independent fan-shaped segments (121), with the fan-shaped segments (121) of the same layer distributed circumferentially along the central column (11).

5. The tree fastener for securing a connector according to claim 1, wherein: The bottom end of the central column (11) is coaxially provided with an inverted truncated cone (14) that is smaller at the bottom and larger at the top.

6. The tree fastener for securing a connector according to claim 1, wherein: The spring-loaded arm (32) has a cantilever structure, and its root is fixedly connected to the buckle (3). The main body of the spring-loaded arm (32) extends obliquely upward and forms the buckle (321) on the top surface of the spring-loaded arm (32).

7. The tree fastener for securing a connector according to any one of claims 1-6, wherein: The cap (2) is disc-shaped.

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