Mechanical anti-dropping quick release structure

Abstract

The utility model discloses a kind of mechanical anti-off quick-release structure, connect the technical field of buckle, the mechanical anti-off quick-release structure includes suspension piece, limiting piece, clamping piece and locking base, one end of limiting piece is connected with suspension piece, accommodating cavity is formed in limiting piece, the end of limiting piece away from suspension piece is formed with the opening communicated with accommodating cavity, the inner wall of accommodating cavity is formed with first limiting part, clamping piece includes mutually connected base body and elastic dog, part of base body is slidably worn in limiting piece and partly exposed outside limiting piece, elastic dog is set in accommodating cavity and is extended towards opening arrangement, the end of elastic dog close to opening is formed with second limiting part, locking base part passes through opening and extends into base body in accommodating cavity, base body can slide along the direction of suspension piece to opening or along the direction of opening to suspension piece to make first limiting part and second limiting part abut or disengage, so as to keep making elastic dog and locking base clamping or making both can disengage.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to a mechanical anti-detachment quick-release structure. Background Technology

[0002] In portable electronic devices, handheld tools, and outdoor equipment, lanyard clips are widely used to connect devices to users and prevent accidental drops during use. Existing lanyard clips often prioritize quick installation and removal, typically employing spring clips, one-way claws, or press-type quick-release structures. While these facilitate rapid installation and removal, their ability to prevent accidental detachment is limited. They are prone to loosening under external impact, continuous vibration, or accidental pressure, posing a safety hazard.

[0003] In related technologies, to improve the anti-accidental disengagement performance, some structures have introduced mechanisms such as sliding sleeves, knobs, and double locking. While these solutions improve reliability, they involve a large number of parts, complex structures, and high manufacturing costs, which are not conducive to large-scale production and promotion. Therefore, how to reduce the number of parts, simplify the structure, and lower costs while ensuring connection reliability has become an urgent technical problem to be solved in this field. Utility Model Content

[0004] The main purpose of this invention is to propose a mechanical anti-detachment quick-release structure, which aims to ensure connection reliability while reducing the number of parts, simplifying the structure and reducing costs.

[0005] To achieve the above objectives, the mechanical anti-detachment quick-release structure proposed in this utility model includes a suspension member, a limiting member, a snap-fit ​​member, and a locking base. One end of the limiting member is connected to the suspension member, and a receiving cavity is formed within the limiting member. An opening communicating with the receiving cavity is formed at the end of the limiting member away from the suspension member. A first limiting portion is formed on the inner wall of the receiving cavity. The snap-fit ​​member includes a base body and an elastic claw connected to each other. A portion of the base body is slidably inserted through the limiting member and partially exposed outside the limiting member. The elastic claw is disposed within the receiving cavity and extends toward the opening. The elastic claw is configured such that a second limiting portion is formed at one end near the opening, and the locking base portion passes through the opening and extends into the receiving cavity. The base is configured to slide along the direction from the suspension member to the opening or along the direction from the opening to the suspension member to allow the first limiting portion to abut or disengage from the second limiting portion. When the first limiting portion abuts with the second limiting portion, the elastic claw engages with the locking base. When the first limiting portion disengages from the second limiting portion, the elastic claw can elastically deform to disengage from the locking base. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0007] Figure 1 An exploded view of an embodiment of the mechanical anti-detachment quick-release structure provided by this utility model;

[0008] Figure 2 A cross-sectional view of an embodiment of the mechanical anti-detachment quick-release structure provided by this utility model;

[0009] Figure 3 for Figure 2 A cross-sectional view of another state of the mechanical anti-detachment quick-release structure;

[0010] Figure 4 for Figure 1 Schematic diagram of the middle suspension component;

[0011] Figure 5 for Figure 1 A structural diagram of the card connector;

[0012] Figure 6 for Figure 5 Another structural diagram of the card connector;

[0013] Figure 7 for Figure 1 Schematic diagram of the middle limiting component;

[0014] Figure 8 for Figure 1 A schematic diagram of the locking base.

[0015] Explanation of icon numbers:

[0016] 100. Mechanical anti-detachment quick-release structure;

[0017] 1. Suspension component; 1a. Insertion hole; 11. Suspension ring; 11a. Suspension hole; 12. Connecting part;

[0018] 2. Limiting element; 2a. Receiving cavity; 2b. Opening; 2c. Sliding space; 21. First limiting surface; 22. Insertion protrusion;

[0019] 3. Snap-fit ​​component; 31. Base; 31a. Alternating hole; 311. Sliding part; 312. First sliding protrusion; 32. Elastic claw; 321. Second limiting surface; 322. Snap-fit ​​protrusion; 33. Second sliding protrusion;

[0020] 4. Locking base; 4a. Snap-fit ​​groove; 41. Limiting step.

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] This utility model proposes a mechanical anti-detachment quick-release structure 100.

[0026] Please see Figures 1 to 3In one embodiment of this utility model, the mechanical anti-detachment quick-release structure 100 includes a suspension member 1, a limiting member 2, a snap-fit ​​member 3, and a locking base 4. One end of the limiting member 2 is connected to the suspension member 1, and a receiving cavity 2a is formed inside the limiting member 2. An opening 2b communicating with the receiving cavity 2a is formed at the end of the limiting member 2 away from the suspension member 1. A first limiting portion is formed on the inner wall of the receiving cavity 2a. The snap-fit ​​member 3 includes a base 31 and an elastic claw 32 connected to each other. A portion of the base 31 is slidably inserted through the limiting member 2 and partially exposed outside the limiting member 2. The elastic claw 32 is disposed in the receiving cavity. The elastic claw 32 extends into the cavity 2a and towards the opening 2b. A second limiting portion is formed at the end of the elastic claw 32 near the opening 2b. The locking base 4 extends through the opening 2b and into the receiving cavity 2a. The base 31 is configured to slide along the direction from the suspension member 1 to the opening 2b or along the direction from the opening 2b to the suspension member 1 so that the first limiting portion abuts against or disengages from the second limiting portion. When the first limiting portion abuts against the second limiting portion, the elastic claw 32 engages with the locking base 4. When the first limiting portion disengages from the second limiting portion, the elastic claw 32 can deform to disengage from the locking base 4.

[0027] In this embodiment, the locking base 4 is used to fix or integrally form with the item to be hung. The hanging component 1, the limiting component 2, and the snap-fit ​​component 3 are assembled into one unit. The hanging component 1 can be connected to the hanging rope. The elastic claw 32 uses the elastic deformation of the material itself to snap into or disengage from the locking base 4. That is, the whole assembly of the hanging component 1, the limiting component 2, and the snap-fit ​​component 3 is pushed towards the locking base 4. The locking base 4 is inserted into the receiving cavity 2a from the opening 2b. The elastic claw 32 is squeezed by the locking base 4 and undergoes elastic deformation away from the locking base 4. When it is inserted into place, the elasticity of the elastic claw 32 causes the elastic claw 32 to snap into the corresponding part of the locking base 4 and restore the shape of the elastic claw 32. The inner wall of the receiving cavity 2a is provided with a first limiting part, and the outer wall of the elastic claw 32 is provided with a second limiting part. When the first limiting part abuts against the second limiting part, it can restrict the displacement of the free end of the elastic claw 32, that is, prevent the elastic claw 32 from opening. At this time, the elastic claw 32 is kept engaged with the locking base 4. When the first limiting part disengages from the second limiting part, it contacts the limiting part on the free end of the elastic claw 32. At this time, the limiting member 2 is pulled away from the locking base 4. Under the compression of the locking base 4, the elastic claw 32 deforms again and opens, thereby disengaging from the locking base 4. Since the base 31 of the latching member 3 is slidably inserted on the limiting member 2 and exposed outside the limiting member 2, it is easy to move or push the latching member 3 from the outside, so that the base 31 can slide along the direction from the hanging member 1 to the opening 2b or along the direction from the opening 2b to the hanging member 1, so that the first limiting part abuts against or disengages from the second limiting part. When hanging an item, under the action of gravity, such as Figure 2 As shown, the first limiting part and the second limiting part automatically abut. When unlocking is required, as... Figure 3As shown, you only need to manually push the exposed part of the base 31 to disengage the first and second limiting parts, and then forcefully pull the outer part of the base 31 to disengage the elastic claw 32 from the locking base 4.

[0028] Specifically, one end of the suspension component 1 is provided with a through hole or hook for connection to an external rope or hook, and the other end is fixedly connected to the limiting component 2 by means of ultrasonic welding, bonding, or threaded connection, depending on the product space. This embodiment does not limit this. The suspension component 1 and the limiting component 2 can be made of the same material, which facilitates ultrasonic welding or integral molding, thereby combining the limiting component 2 and the snap-fit ​​component 3 into an operating unit that can be moved as a whole, reducing the number of parts.

[0029] The limiting member 2 has an internal receiving cavity 2a, providing deformation space for the elastic claw 32. A first limiting part is provided on the inner wall. The first limiting part can be a continuous or discontinuous protrusion, step, slope, or cone, with its functional surface facing the outer wall of the elastic claw 32. The second limiting part can be a step, cone, or inclined rib. The specific height and width of the first and second limiting parts are designed to prevent the elastic claw 32 from expanding outward. The dimensions vary with the thickness of the claw wall. In this embodiment, the dimensions of the first and second limiting parts are not limited.

[0030] The locking component 3 consists of a base 31 and an elastic claw 32. The base 31 is mainly a block-shaped structure adapted to the internal shape of the receiving cavity 2a. Parts of the base 31 are rod-shaped or columnar and pass through holes or windows provided on the limiting component 2, and are exposed for pushing or pulling by fingers. To guide the base 31 to slide smoothly, mutually compatible guide structures, such as guide rails and guide grooves, guide posts and sliding sleeves, can be provided on the inner walls of the base 31 and the receiving cavity 2a, respectively. The elastic claw 32 is a cantilever structure. The base 31 is connected to the fixed end of the elastic claw 32. The elastic claw 32 is cantilevered, and the material itself has good elasticity to provide locking force. The outer wall of the free end of the elastic claw 32 is provided with a second limiting part. The inner wall of the free end of the elastic claw 32 is provided with a locking protrusion 322 for cooperating with the locking groove 4a of the locking base 4. The elastic claw 32 is integrally injection molded with the base 31, utilizing the material's own elasticity to replace the metal spring and eliminate the risks of spring fatigue and corrosion. The number of claws, wall thickness, and cantilever length are adjusted according to the actual clamping force; this embodiment does not impose any limitations on these aspects.

[0031] The locking base 4 is fixedly connected to or integrally formed with the object to be suspended, providing a mating part that matches the snap-fit ​​part 3, enabling a detachable connection between the equipment side and the rope side. The bottom diameter of the locking base 4 is larger than the opening 2b of the limiting part 2 to prevent it from completely penetrating into the receiving cavity 2a; the outer wall of the portion of the locking base 4 that extends into the receiving cavity 2a is provided with a snap-fit ​​groove 4a for engaging with the snap-fit ​​protrusion 322 of the elastic claw 32. The bottom wall of the locking base 4 may be provided with screw holes, double-sided adhesive, or injection-molded embedded parts for connection with the equipment housing.

[0032] The technical solution of this embodiment eliminates additional parts such as metal springs, sliding sleeves, and knobs, resulting in fewer parts, a simple and compact structure, and low production costs. The cooperation between the snap-fit ​​part 3 and the locking base 4 enables locking upon pushing in and unlocking upon pulling out, resulting in high operational efficiency. Furthermore, the locking is achieved by a geometric stop combined with material elasticity, avoiding failures caused by spring fatigue or corrosion. In addition, this mechanical anti-detachment quick-release structure 100 can self-lock under gravity when suspended, making it impossible to pull out, thus ensuring high reliability.

[0033] Further, please refer to Figure 2 and Figure 3 In one embodiment of the present invention, the first limiting part is a first limiting surface 21, and the end of the receiving cavity 2a near the opening 2b gradually contracts along the direction from the suspension member 1 to the opening 2b to form the first limiting surface 21; the second limiting part is a second limiting surface 321, and the end of the elastic claw 32 near the opening 2b gradually contracts along the direction from the suspension member 1 to the opening 2b to form the second limiting surface 321; the second limiting surface 321 can abut and fit against the first limiting surface 21.

[0034] In this embodiment, the first limiting surface 21 and the second limiting surface 321 are planes or curved surfaces that can fit together, so as to achieve more uniform radial locking by surface-to-surface contact, further reducing the risk of accidental disengagement and reducing local wear.

[0035] Specifically, the first limiting surface 21 is formed directly on the inner wall of the receiving cavity 2a, located close to the opening 2b. It gradually tapers along the inner diameter from the suspension member 1 to the opening 2b, forming a continuous inclined or conical surface. This surface is injection molded in one piece with the receiving cavity 2a, without adding any parts. Its technical function is to distribute the outward opening force of the elastic claw 32 across the entire conical surface, avoiding stress concentration caused by point contact, and ensuring the claw remains locked even under impact or continuous vibration. The angle of the inclined surface is designed based on the material's friction coefficient and the required anti-disengagement force, achieving a balance between push-pull force and self-locking performance. If a greater anti-disengagement force is required, a smaller angle can be selected, but the claw thickness must be increased simultaneously to ensure strength. The second limiting surface 321 is located on the outer wall of the free end of the elastic claw 32, gradually tapering along the outer diameter from the suspension member 1 to the opening 2b, forming an inclined or conical surface that matches the first limiting surface 21. When the latching member 3 is pushed to the locked position, the second limiting surface 321 and the first limiting surface 21 are completely fitted together, forming a ring-shaped closed support. The elastic claw 32 cannot continue to extend outward, thus firmly holding the locking base 4 within the latching groove 4a. To unlock, simply keep the limiting member 2 in place and pull the latching member 3 towards the suspension member 1. The two conical or flat surfaces separate instantly, and the elastic claw 32 can extend outward again under the pressure of the base head, completing the release. Due to the large contact area, the contact pressure is smaller under the same locking force, and stable resistance can be maintained even after repeated disassembly and assembly, preventing premature loosening due to localized wear.

[0036] Further, please refer to Figure 1 , Figure 4 and Figure 7 In one embodiment of this utility model, the end of the limiting member 2 near the suspension member 1 is provided with a plug-in part, the suspension member 1 is provided with a plug-in hole 1a, the plug-in part is inserted into the plug-in hole 1a and fixedly connected to the inner wall of the plug-in hole 1a.

[0037] In this embodiment, the connection between the suspension member 1 and the limiting member 2 is achieved through the cooperation of the plug-in part and the plug-in hole 1a, so that the two can be positioned first and then fixed in products with limited total thickness, reducing the number of screws or ultrasonic ribs, and maintaining coaxiality, which facilitates the subsequent alignment of the elastic claw 32 with the locking base 4.

[0038] The insertion part is located at the end of the limiting member 2 near the suspension member 1. It can be a hollow or solid short column with an outer diameter that is the same as or close to the outer diameter of the limiting member 2. The outer contour of the column can be fitted with the insertion hole 1a with a small interference fit or a transition fit. The insertion hole 1a is correspondingly provided on the suspension member 1 and is a through hole or a blind hole with a depth slightly greater than the length of the insertion part to accommodate adhesive or welding allowance. During assembly, the insertion part is first inserted into the insertion hole 1a to complete radial positioning, and then permanently fixed by means of hinge or ultrasonic riveting, without the need for additional metal inserts, and the bonding or welding area is increased, improving tensile strength. In this embodiment, the insertion part combines positioning and connection functions, reducing the assembly steps of the suspension member 1 and the limiting member 2, improving positioning accuracy, and further reducing overall cost.

[0039] Further, please refer to Figure 1 , Figure 5 and Figure 7 In one embodiment of the present invention, the plug-in part includes a plurality of plug-in protrusions 22, the suspension member 1 is provided with a plurality of plug-in holes 1a, each plug-in protrusion 22 is plugged into a plug-in hole 1a, and a sliding space 2c is formed between each two adjacent plug-in protrusions 22; the base 31 is provided with a plurality of clearance holes 31a, and a sliding part 311 is formed between each two clearance holes 31a, each plug-in protrusion 22 slides through a clearance hole 31a, and each sliding part 311 slides through a sliding space 2c.

[0040] To strictly limit the sliding direction of the base 31 to the axial direction of the limiting member 2, i.e., the direction from the suspension member 1 to the opening 2b, and to solve the problem of easy deflection of the base 31 during sliding, requiring additional anti-rotation ribs, without adding extra parts, in this embodiment, the mechanical anti-detachment quick-release structure 100 still consists of four parts: the suspension member 1, the limiting member 2, the snap-fit ​​member 3, and the locking base 4. The insertion part is divided into multiple independent insertion protrusions 22, each protrusion being rib-shaped or fan-shaped, symmetrically distributed around the central axis of the limiting member 2, providing multiple positioning points for the suspension member 1 and the limiting member 2. The insertion protrusions 22 and the limiting member 2 are integrally injection molded, with a wall thickness equal to that of the body. The length of the protrusion is greater than the depth of the insertion hole 1a, ensuring that after the insertion protrusion 22 is inserted into the insertion hole 1a and a gluing or welding allowance is left, a sliding space 2c is formed between each pair of adjacent insertion protrusions 22.

[0041] The suspension component 1 has an equal number of insertion holes 1a corresponding to multiple insertion protrusions 22. The hole outline and the protrusion shape are in a small gap or transition fit. The hole periphery wall can be chamfered at the same time during injection molding to facilitate assembly guidance.

[0042] The base 31 of the snap-fit ​​component 3 has corresponding clearance holes 31a on it, which correspond one-to-one with the insertion protrusions 22. The insertion protrusions 22 can slide axially within the clearance holes 31a. The space between the two clearance holes 31a is the sliding part 311. The side wall of the sliding part 311, which is the inner side wall of the clearance hole 31a, is slidably connected to the inner wall of the sliding space 2c. After assembly, the sliding part 311 is embedded in the sliding space 2c, forming a cross-nested structure in which the insertion protrusions 22 pass through the clearance holes 31a and the sliding part 311 passes through the sliding space 2c. In this way, the circumferential direction of the base 31 and the limiting component 2 is completely constrained, and only the axial direction is retained as a single degree of freedom. When the base 31 is pushed or pulled, the outer wall of the insertion protrusion 22 and the inner wall of the clearance hole 31a, and the side wall of the sliding part 311 and the side wall of the sliding space 2c slide in contact simultaneously without the need for additional metal pins or positioning ribs. In terms of production, since the protrusions, the clearance holes 31a, and the sliding space 2c are all formed in the same demolding direction, the mold has no side core pulling, and the mass production injection molding cycle is the same as that of conventional shells; the disassembly force can be flexibly adjusted by the number and width of the protrusions and the interference of the sliding part 311, so as to achieve the beneficial effects of guiding, anti-rotation, thin-walled and overall aesthetics while retaining no extra accessories.

[0043] Further, please refer to Figure 5 and Figure 6 In one embodiment of the present invention, the inner wall of the clearance hole 31a is provided with a first sliding protrusion 312, and the first sliding protrusion 312 slides against the side wall of the insertion protrusion 22.

[0044] In this embodiment, a first sliding protrusion 312 is added locally to the inner wall of the clearance hole 31a, so that the friction surface of the substrate 31 when it is pushed and pulled changes from the whole surface to the contact between a line and a surface or a point and a surface, thereby reducing frictional resistance and maintaining the stability of the sliding direction, and solving the problem of stickiness and sluggish feel caused by excessive friction area.

[0045] Specifically, the first sliding protrusion 312 is a raised ridge or a semi-cylindrical rib that runs axially through the clearance hole 31a, or only the middle section may be retained. Its technical function is to transform the surface-to-surface sliding contact between the clearance hole 31a and the sidewall of the insertion protrusion 22 into a point-to-surface or line-to-surface sliding contact, thereby reducing the contact area and thus reducing friction. The protrusion and the base 31 are integrally injection molded from the same material, and the sidewall of the insertion protrusion 22 retains its original contour without additional processing. After assembly, the apex of the first sliding protrusion 312 abuts against the sidewall of the insertion protrusion 22, eliminating the wobbling gap and stabilizing the sliding resistance at a low level.

[0046] Further, please refer to Figure 1 and Figure 4 In one embodiment of this utility model, the suspension member 1 is provided with a suspension part and a connecting part, the connecting part is connected to the limiting member 2, and the suspension part is a suspension ring 11.

[0047] In this embodiment, the suspension ring 11 is a closed ring, and its outline can be a circular ring, elliptical ring, oblong ring, or rectangular ring, etc., with the ends connected in a ring structure. The connecting part is a block structure used to connect with the limiting member 2. Optionally, the connecting part is provided with a plug hole 1a, and the limiting member 2 is provided with a plug protrusion 22, which is plugged into the plug hole 1a. The suspension ring 11 can be connected by integral injection molding with the connecting part or by subsequent assembly. The closed ring outline ensures that once the external rope knot or metal buckle is inserted, it is completely surrounded by the ring body, forming an all-round limiting. Compared with hook-shaped open outlines, such as C-shaped or J-shaped, the rope knot may slip to the gap and come off on its own when subjected to lateral impact or rope twisting, causing the equipment to fall. The closed ring does not have a gap, avoiding the problem of accidental disengagement. Secondly, the ring structure has the largest tensile section modulus under the same cross-sectional area, and the stress distribution is uniform when under force, without the stress concentration caused by the hook shape.

[0048] Further, please refer to Figure 1 and Figure 4 In one embodiment of the present invention, a suspension hole 11a is formed on the suspension ring 11, and the suspension hole 11a is gradually narrowed along the direction from the opening 2b to the suspension member 1.

[0049] In this embodiment, the cross-section of the suspension hole 11a is configured as a wedge shape that gradually narrows along the direction from the opening 2b to the suspension member 1. Utilizing the principle of gravity self-positioning, the hanging rope automatically slides to the bottom apex of the hole after the equipment shakes or is released, reducing the swing amplitude and decreasing the lateral prying force on the locking base 4 caused by the rope sliding within the hole. For example, the suspension hole 11a can be an isosceles triangle, a fan shape, or a teardrop shape. The hole wall of the suspension hole 11a forms two symmetrical inclined planes. The smaller the angle between the inclined planes, the more obvious the self-positioning effect, but the rope diameter must also be taken into account to avoid rope jamming.

[0050] Further, please refer to Figure 6 and Figure 8 In one embodiment of this utility model, the elastic claw 32 is provided with a first engaging portion, and the locking base 4 is provided with a second engaging portion. The first engaging portion engages with the second engaging portion. In the first engaging portion and the second engaging portion, one of them is an engaging protrusion 322, and the other is an engaging groove 4a. The engaging groove 4a is gradually narrowed along the groove opening of the engaging groove 4a to the bottom wall of the engaging groove 4a.

[0051] In this embodiment, the first engaging portion is located inside the free end of the elastic claw 32 and can be a protrusion, rib, or partial spherical crown, collectively referred to as the engaging protrusion 322. The second engaging portion is located on the side wall of the portion of the locking base 4 that extends into the receiving cavity 2a, and is correspondingly set as the engaging groove 4a. The groove shape of the engaging groove 4a gradually narrows from its opening to its bottom, forming a symmetrical or single-sided wedge shape. For the single-sided wedge shape, the inclined surface must be located on the side closer to the suspension member 1. Thus, when the first limiting portion abuts against the second limiting portion, the engaging protrusion 322 is locked by the engaging groove 4a. When the first limiting portion disengages from the second limiting portion, the engaging protrusion 322 can automatically slide out of the engaging groove 4a along the inclined surface of the wedge shape, thus causing the inner wall of the engaging groove 4a to squeeze the free end of the elastic claw 32 outward, completing the unlocking.

[0052] Further, please refer to Figure 3 and Figure 8 In one embodiment of the present invention, the locking base 4 is provided with a limiting step 41, which is used to abut against the end of the limiting member 2 away from the hanging member 1.

[0053] In this embodiment, a limiting step 41 is added to the locking base 4 to abut against the lower end face of the limiting member 2, forming a hard limit on the insertion depth. This solves the problem of excessive pushing causing the locking protrusion 322 on the elastic buckle to exceed the locking groove 4a on the locking base 4, or insufficient insertion causing incomplete locking. Specifically, the limiting step 41 is located on the side of the locking groove 4a of the locking base 4 that faces away from the suspension member 1. The diameter of the limiting step 41 is larger than the inner diameter of the opening 2b of the limiting member 2. The upper end face of the limiting step 41 is a flat annular surface, and the axis of the limiting step 41 is coaxial with the rod.

[0054] Further, please refer to Figure 6 In one embodiment of the present invention, the snap-fit ​​member 3 further includes a plurality of second sliding protrusions 33. The second sliding protrusions 33 are disposed on the base 31 and located in the receiving cavity 2a. The second sliding protrusions 33 slide against the inner wall of the receiving cavity 2a. The plurality of second sliding protrusions 33 are arranged around the sliding direction of the base 31.

[0055] In this embodiment, several second sliding protrusions 33 are added to the section of the base 31 located in the receiving cavity 2a, so that a multi-point, circumferentially distributed sliding pair is formed between the snap-fit ​​member 3 and the limiting member 2, which solves the problem of swaying and jamming that the base 31 is prone to due to excessive cantilever length, thereby ensuring that the sliding direction of the base 31 always coincides with the axis without adding a metal bushing.

[0056] Specifically, the second sliding protrusion 33 is a short rib or semi-cylinder, symmetrically distributed on the outer periphery of the base 31. The length direction of the rib is parallel to the sliding direction. Multiple second sliding protrusions 33 simultaneously contact the inner wall of the receiving cavity 2a, forming a positioning of the base 31 and eliminating the circumferential gap between the base 31 and the cavity wall. Here, "multiple" refers to at least two. The top of the second sliding protrusion 33 participates in the sliding, reducing the contact area between the base 31 and the inner wall of the receiving cavity 2a from a full circular surface to several narrow bands, reducing friction and making the push and pull smoother. The second sliding protrusion 33 and the base 31 can be integrally injection molded from the same material. Multiple second sliding protrusions 33 are evenly distributed around the circumference, ensuring positioning without significantly increasing the injection pressure. Because the second sliding protrusions 33 are located inside the receiving cavity 2a, they are not visible from the outside and do not affect the product appearance.

[0057] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A mechanical anti-detachment quick-release structure, characterized in that, The mechanical anti-detachment quick-release structure includes: Suspension components; A limiting member, one end of which is connected to the suspension member, a receiving cavity is formed inside the limiting member, an opening communicating with the receiving cavity is formed at the end of the limiting member away from the suspension member, and a first limiting part is formed on the inner wall of the receiving cavity. A snap-fit ​​component, comprising a base and an elastic claw interconnected thereto, wherein a portion of the base is slidably inserted through and partially exposed outside the limiting member, the elastic claw is disposed within the receiving cavity and extends toward the opening, and a second limiting portion is formed at the end of the elastic claw near the opening; and A locking base, the locking base portion passing through the opening and extending into the receiving cavity; The substrate is configured to slide along the direction from the suspension member to the opening or along the direction from the opening to the suspension member so that the first limiting portion abuts against or disengages from the second limiting portion; When the first limiting part abuts against the second limiting part, the elastic claw engages with the locking base; When the first limiting part disengages from the second limiting part, the elastic claw can elastically deform to disengage from the locking base.

2. The mechanical anti-detachment quick-release structure as described in claim 1, characterized in that, The first limiting part is a first limiting surface, and the end of the receiving cavity near the opening gradually contracts along the direction from the suspension member to the opening to form the first limiting surface; The second limiting part is a second limiting surface, and the end of the elastic claw near the opening gradually contracts along the direction from the suspension member to the opening to form the second limiting surface; The second limiting surface can abut and fit against the first limiting surface.

3. The mechanical anti-detachment quick-release structure as described in claim 1, characterized in that, The limiting member has a plug-in part at one end near the suspension member, and the suspension member has a plug-in hole. The plug-in part is inserted into the plug-in hole and is fixedly connected to the inner wall of the plug-in hole.

4. The mechanical anti-detachment quick-release structure as described in claim 3, characterized in that, The plug-in portion includes multiple plug-in protrusions, and the suspension member is provided with multiple plug-in holes. Each plug-in protrusion is plugged into a plug-in hole, and a sliding space is formed between each pair of adjacent plug-in protrusions. The substrate is provided with a plurality of clearance holes, and a sliding part is formed between every two clearance holes. Each of the insertion protrusions slides through a clearance hole, and each sliding part slides through a sliding space.

5. The mechanical anti-detachment quick-release structure as described in claim 4, characterized in that, The inner wall of the clearance hole is provided with a first sliding protrusion, which slides against the side wall of the insertion protrusion.

6. The mechanical anti-detachment quick-release structure as described in claim 1, characterized in that, The suspension component is provided with a suspension part and a connecting part. The connecting part is connected to the limiting component, and the suspension part is a suspension ring.

7. The mechanical anti-detachment quick-release structure as described in claim 6, characterized in that, The suspension ring has a suspension hole, which is gradually narrowed along the direction from the opening to the suspension member.

8. The mechanical anti-detachment quick-release structure as described in any one of claims 1 to 7, characterized in that, The elastic claw is provided with a first engaging portion, and the locking base is provided with a second engaging portion, wherein the first engaging portion engages with the second engaging portion. In the first and second snap-fit ​​portions, one is a snap-fit ​​protrusion and the other is a snap-fit ​​groove, which gradually narrows along the groove opening to the bottom wall of the snap-fit ​​groove.

9. The mechanical anti-detachment quick-release structure as described in any one of claims 1 to 7, characterized in that, The locking base is provided with a limiting step, which is used to abut against the end of the limiting member that is away from the suspension member.

10. The mechanical anti-detachment quick-release structure as described in any one of claims 1 to 7, characterized in that, The snap-fit ​​component further includes a plurality of second sliding protrusions, which are disposed on the base and located within the receiving cavity. The second sliding protrusions slide against the inner wall of the receiving cavity, and the plurality of second sliding protrusions are arranged around the sliding direction of the base.

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