Self-locking quilt fixing assembly

Abstract

The utility model discloses a self-locking quilt fixing component, which is characterized in that a cap part of a self-locking buckle forms an upheaval position on a first side and forms a sunken position on a second side; the cap part is provided with a self-locking part, and the self-locking part comprises a hole part formed in the top wall of the cap part and at least three petal-shaped bodies axially and obliquely extending from the inner edge of the hole part to the second side; the petal-shaped bodies are gradually gathered towards the second side, the end faces of the three petal-shaped bodies are located on the same plane and define a via hole with the inner diameter smaller than the maximum diameter of the limiting protrusion, and a guide part with the hole diameter gradually reduced is formed on the first side of the cap part and extends from the hole part to the via hole. The actual length of the petal-shaped body is increased in a limited horizontal space, so that the elastic deformation capability of the petal-shaped body is obviously improved; stronger locking force is provided by inclined gathering of the petal-shaped bodies, so that the self-locking effect is more reliable; and the existence of the guide part is more beneficial to aligned needle threading of the needle body.

Description

Technical Field

[0001] The utility model relates to a household or bedding article, in particular to a self-locking quilt fixing component, which can be used to position the quilt cover and the quilt core relative to each other and prevent the quilt core from shifting in the quilt cover. Background Art

[0002] A quilt fixer is an auxiliary tool for bedding, and its main function is to fix the quilt core and the quilt cover together to prevent the quilt core from shifting or rolling during sleep or use. Traditional quilt fixing methods may include using pins, safety pins or sewing, but these methods have problems such as safety hazards or inconvenient operation. Modern quilt fixers are designed to be simple, safe and efficient, and they are usually made of plastic, metal or other durable materials.

[0003] Patent CN216675372U discloses a quilt fixing device. This technology includes a needle body, a needle sleeve and a fixing base. The needle body has a needle rod and a base. The needle sleeve is used to guide the needle rod through the fixed object, and the fixing base is provided with a fixing hole, and the cooperation with the needle rod is realized through a threaded section. This design simplifies the traditional structure and reduces the complexity of production and assembly.

[0004] Patent CN220832554U discloses a self-locking quilt fixing component. This component consists of a metal guiding needle tube, a plastic needle and a positioning cap. The plastic needle is designed with a smooth section, a serrated section and a pointed section. The one-way limiting teeth on the serrated section interact with the limiting hole of the positioning cap to ensure the stability of the fixing component. This design does not require additional needle gun equipment, reduces the use cost, and improves the safety and comfort at the same time.

[0005] Patent CN217907186U discloses a quilt fixing device. This device consists of a needle body, a needle sleeve and a fixing base. The needle rod has a non-return part, and the fixing base is provided with a perforation and a blocking position. This design enables the needle rod to be effectively restricted in the fixing base after passing through the fixed object to prevent withdrawal, and at the same time simplifies the structure of the fixing base, reducing the volume and weight.

[0006] In the above patents, after the needle body passes through the fixing base, the flap around the perforation of the fixing base locks the non-return part on the needle body. However, due to the deformation ability of the flap, while ensuring the smooth passage of the needle body, its limiting ability to the non-return part on the needle body is limited, resulting in the needle body being easily detached during long-term use, thus causing the fixing to fail. Summary of the Utility Model

[0007] In view of the various advantages and disadvantages of existing quilt fixers, the technical problem to be solved by the utility model is to provide a self-locking quilt fixing component with stronger self-locking ability and better connection stability.

[0008] The technical concept is: at least three lobes inclined axially are arranged on the concave position of the cap of the self-locking buckle made of hard material, which increases the actual length of the lobes in the limited horizontal space, thus significantly improving its elastic deformation ability, and using the inclined setting to increase the front-end stress and improve the self-locking force.

[0009] The technical solution adopted by the present utility model to solve the above technical problems is: a self-locking quilt fixing assembly, including a plastic needle, a self-locking buckle and a soft rubber cap;

[0010] The plastic needle includes a limit head and a needle body from back to front. The needle body includes a needle main body and a plurality of limit protrusions spaced from each other on the middle section of the needle main body. The limit rear end surface of the limit protrusion is perpendicular to the axial direction of the needle main body, and the outer peripheral surface of the limit protrusion inclines inward from back to front to form a guiding inclined surface;

[0011] The self-locking buckle includes a cap portion and a flange portion; the plastic needle is limited after passing through the cap portion from the first side, and the soft rubber cap sleeved on the flange portion from the second side to flexibly shield the second side and the periphery of the self-locking buckle;

[0012] The cap portion forms a raised position on the first side and a concave position on the second side; the cap portion is provided with a self-locking portion, and the self-locking portion includes a hole portion provided on the top wall of the cap portion and at least three lobes axially inclined and extending from the inner edge of the hole portion toward the second side;

[0013] The lobes gradually converge toward the second side, and the end surfaces of the three lobes are located on the same plane and enclose a through hole with an inner diameter smaller than the maximum diameter of the limit protrusion. A guiding portion with a gradually decreasing aperture extending from the hole portion to the through hole is formed on the first side of the cap portion.

[0014] The preferred technical solution adopted by the present utility model to solve the above technical problems is: the self-locking buckle is integrally formed by hard plastic, and the distance between the end surface of the lobe and the second-side surface of the flange portion is greater than or equal to the axial length of the limit protrusion.

[0015] The preferred technical solution adopted by the present utility model to solve the above technical problems is: the hole portion is in an equilateral triangle shape, and each side of the hole portion extends a lobe, and there is a space gap between adjacent lobes.

[0016] The preferred technical solution adopted by the present utility model to solve the above technical problems is: the flange portion is provided with a cutting edge, and the cutting edge forms a gap between the position of the flange portion and the inner wall of the soft rubber cap.

[0017] The preferred technical solution adopted by the present utility model to solve the above technical problems is: the outer diameter of the needle main body is smaller than the space gap.

[0018] The preferred technical solution adopted by the present utility model to solve the above technical problems is that the axial length of the limiting protrusion is less than the distance between two adjacent limiting protrusions.

[0019] The preferred technical solution adopted by the present utility model to solve the above technical problems is that the soft rubber cap includes a dome portion with a central bulge and an annular outer peripheral portion, and a laterally inwardly bent annular edge portion is provided at the lower end of the annular outer peripheral portion.

[0020] The preferred technical solution adopted by the present utility model to solve the above technical problems is a self-locking quilt fixing assembly, including a plastic needle and a self-locking buckle;

[0021] The plastic needle includes a limiting head and a needle body from back to front. A plurality of spaced-apart limiting protrusions are provided in the middle section of the needle body. The limiting rear end surface of the limiting protrusion is perpendicular to the axial direction of the needle body, and the outer peripheral surface of the limiting protrusion inclines inward from back to front;

[0022] The buckle body of the self-locking buckle forms a raised position on the first side and a sunken position on the second side; the self-locking buckle is provided with a self-locking portion, and the self-locking portion includes a hole portion provided on the top wall of the self-locking buckle and at least three lobe-shaped bodies integrally formed with the buckle body and extending from the inner edge of the hole portion toward the second side;

[0023] The lobe-shaped bodies gradually converge toward the second side. The end surfaces of the three lobe-shaped bodies are located on the same plane and enclose a through-hole with an inner diameter smaller than the maximum diameter of the limiting protrusion. A guiding portion with a gradually decreasing aperture extending from the hole portion to the through-hole is formed on the first side of the self-locking buckle.

[0024] The preferred technical solution adopted by the present utility model to solve the above technical problems is that it includes a soft rubber cap covering the buckle body. The buckle body includes a cap portion and a flange portion. The cap portion forms a raised position relative to the flange portion on the first side and a sunken position relative to the flange portion on the second side; the soft rubber cap includes a dome portion with a central bulge and an annular outer peripheral portion, and a laterally inwardly bent annular edge portion is provided at the lower end of the annular outer peripheral portion;

[0025] The annular outer peripheral portion wraps the outer peripheral wall of the flange portion, the annular edge portion wraps the outer edge of the second side surface of the flange portion, the dome portion and the sunken position enclose a receiving cavity, and at least one limiting protrusion of the needle body is located in the receiving cavity.

[0026] The preferred technical solution adopted by the present utility model to solve the above technical problems is as follows: The hole part is an equilateral triangle, and each side of the hole part extends out a petal-shaped body, and there is a separation gap between adjacent petal-shaped bodies; the needle body includes a needle body, and the diameter of the needle body is smaller than the separation gap; the distance between the end face of the petal-shaped body and the second side surface of the edge part is greater than or equal to the axial length of the limiting protrusion.

[0027] Compared with the prior art, the advantages of the present utility model are as follows: By arranging the petal-shaped bodies to be inclined axially, the actual length of the petal-shaped bodies is increased within a limited horizontal space, thereby significantly improving their elastic deformation ability. Since the petal-shaped bodies are inclined and gathered, the radial inward acting force at the end after their deformation recovery is enhanced. This design ensures that the limiting protrusion can be firmly stuck after passing through the through hole, preventing the plastic needle from retracting and falling off. Compared with the petal-shaped bodies that are flat or perpendicular to the axis, the design of inclined gathering provides a stronger locking force, making the self-locking effect more reliable. Compared with the petal-shaped bodies perpendicular to the axis, the design of inclined gathering results in less friction when the metal guiding needle tube passes through, making the assembly more labor-saving. And the existence of the guiding part is more beneficial to the alignment of the needle body during needle insertion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present utility model will be further described in detail below in conjunction with the drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be used as a limitation to the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0029] Figure 1 Schematic diagram of a self-locking quilt fixing component according to a preferred embodiment of the present utility model;

[0030] Figure 2 Schematic diagram of a plastic needle according to a preferred embodiment of the present utility model;

[0031] Figure 3 Schematic diagram of a self-locking buckle according to a preferred embodiment of the present utility model;

[0032] Figure 4 Schematic diagram of a soft rubber cap according to a preferred embodiment of the present utility model;

[0033] Figure 5 Schematic diagram of the cooperation between a plastic needle and a self-locking buckle according to a preferred embodiment of the present utility model;

[0034] Figure 6 Cross-sectional view of the cooperation between a plastic needle and a self-locking buckle according to a preferred embodiment of the present utility model;

[0035] Figure 7 Schematic diagram of the cooperation between a plastic needle and a metal guiding needle tube according to a preferred embodiment of the present utility model;

[0036] Figure 8 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 1 ;

[0037] Figure 9 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 1 ;

[0038] Figure 10 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 1 ;

[0039] Figure 11 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 2 ;

[0040] Figure 12 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 3 ;

[0041] Figure 13 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 4 ;

[0042] Figure 14 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 5 ;

[0043] Figure 15 Usage process of a self-locking quilt fixing component according to a preferred embodiment of the present utility model Figure 6 。

[0044] Reference numerals:

[0045] Plastic needle 1; self-locking buckle 2; soft rubber cap 3; metal guiding needle tube 4; limiting head 11; needle body 12; needle main body 12a; limiting protrusion 12b; limiting rear end face d; guiding inclined plane e; buckle main body 21; cap portion 21a; edge portion 21b; self-locking portion g; hole portion 23; petal-shaped body 22; through hole n; guiding portion m; recessed position S; partition gap p; cutting edge k; axial length L1 of the limiting protrusion 12b; distance L2 between two adjacent limiting protrusions 12b; dome top portion 31; annular outer peripheral portion 32; annular edge portion 33. Detailed implementation manners

[0046] Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary, and should not be construed as limiting the scope of protection of the present utility model.

[0047] It should be noted that like reference numerals denote like elements in the following drawings. Therefore, once an element is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0048] As Figure 1 shown, this embodiment provides a self-locking quilt fixing assembly, including a plastic needle 1, a self-locking buckle 2, and a soft rubber cap 3.

[0049] As Figure 2 shown, the plastic needle 1 includes a limit head 11 and a needle body 12 from back to front. The needle body 12 includes a needle main body 12a and a plurality of limit protrusions 12b spaced from each other on the middle section of the needle main body 12a. The limit rear end surface d of the limit protrusion 12b is perpendicular to the axial direction of the needle main body 12a. The outer peripheral surface of the limit protrusion 12b is inclined inward from back to front to form a guiding slope e, so that these limit protrusions 12b form a one-way thorn structure on the needle body 12.

[0050] As Figure 3 shown, the buckle main body 21 of the self-locking buckle 2 includes a cap portion 21a and a flange portion 21b. The plastic needle 1 is limited after passing through the cap portion 21a from the first side, and the soft rubber cap 3 is sleeved on the flange portion 21b from the second side to flexibly shield the second side and the periphery of the self-locking opening.

[0051] As Figure 3 、 5 、6 shown, the cap portion 21a forms a raised position relative to the flange portion 21b on the first side and a recessed position S relative to the flange portion 21b on the second side. The cap portion 21a is provided with a self-locking portion g. The self-locking portion g includes a hole portion 23 provided on the top wall of the cap portion 21a and at least three flap bodies 22 extending from the inner edge of the hole portion 23 toward the second side. The flap bodies 22 gradually converge and incline toward the second side. The end surfaces of the three flap bodies 22 are located on the same plane and enclose a through hole n with an inner diameter smaller than the maximum diameter of the limit protrusion 12b. A guiding portion m with a gradually decreasing aperture extending from the hole portion 23 to the through hole n is formed on the first side of the cap portion 21a.

[0052] It should be noted that in order to improve comfort and safety, the plastic needle 1 is made of a relatively soft plastic material and the diameter of the needle body 12 is small to improve its flexibility. This results in that when the plastic needle 1 is used alone to insert into an object to be fixed such as a quilt, the plastic needle 1 is prone to bending and deformation and it is difficult to apply a force. Therefore, a metal guiding needle tube 4 is usually used for guiding. The following will elaborate on the specific usage method of the above-mentioned self-locking quilt fixing assembly in combination with the structure. The specific method for fixing an object to be fixed such as a quilt by using a self-locking quilt fixing assembly includes the following steps.

[0053] Step 1: As Figure 7 shown, assemble the plastic needle 1 and the metal guiding needle tube 4, and insert the needle body 12 of the plastic needle 1 into the opening of the metal guiding needle tube 4 so that the plastic needle 1 and the metal guiding needle tube 4 form an integral body.

[0054] Step 2: As Figure 8 、 9 shown, guided by the metal guiding needle tube 4, after the plastic needle 1 penetrates through an object to be fixed such as a quilt, remove the metal guiding needle tube 4. Specifically, the front end of the metal guiding needle tube 4 punctures an object to be fixed such as a quilt and further advances, so that the needle body 12 of the plastic needle 1 wrapped inside it also gradually passes through an object to be fixed such as a quilt.

[0055] Step 3: As Figure 10 、 11 shown, pass the needle body 12 through the hole 23 on the first side of the self-locking buckle 2 through the guiding part and through the perforation. By applying a force, the lobe body 22 expands along the inclined outer peripheral surface of the limiting projection 12b to achieve one-way pulling until the two are relatively tightened and at least one limiting projection 12b is pulled through to the second side of the self-locking buckle 2, and the limiting rear end surface d is restricted by the perforation.

[0056] Step 4: As Figures 12 - 15 shown, cut off the redundant plastic needle 1 and then cover the first side of the self-locking buckle 2 with the soft rubber cap 3. Thus, the fixing operation is completed.

[0057] In this embodiment, by arranging the petal 22 axially tilted, the actual length of the petal 22 is increased within a limited horizontal space, thereby significantly improving its elastic deformation capacity. This feature allows the petal 22 to more easily expand to a size larger than the maximum diameter of the limiting protrusion 12b when the needle body 12 passes through, ensuring that the plastic needle 1 can be smoothly inserted and self-locked. At the same time, when the plastic needle 1 is fully inserted, the petal 22 can quickly restore its shape and firmly clamp the limiting protrusion 12b to achieve a stable self-locking effect. Because the petal 22 is tilted and gathered, the radial inward force of the rear end of the restoring deformation is enhanced. This design ensures that the limiting protrusion 12b can be firmly clamped after passing through the through hole n, preventing the plastic needle 1 from retreating and falling off. Compared with the flat or axially vertical petal 22, the tilted and gathered design provides a stronger locking force, making the self-locking effect more reliable. Compared with the axially vertical petal-shaped body 22, the inclined and gathered design reduces the friction when the metal guide needle tube 4 passes through, and the assembly is more labor-saving. The existence of the guide part is more conducive to the alignment of the needle body 12 for needle insertion.

[0058] like Figure 6 As shown, the self-locking buckle 2 is integrally formed of hard plastic, and the distance between the end face of the petal-shaped body 22 and the second side surface of the edge 21b is greater than or equal to the axial length of the limiting protrusion 12b. The selection of hard plastic material ensures that the self-locking buckle 2 has high mechanical strength and wear resistance, and can withstand repeated opening and closing and possible external impacts in daily use, thereby extending the service life of the product. At the same time, the rotation of this material also makes the petal-shaped body 22 have a greater clamping force on the needle body 12 in the self-locking state, making the fixation more firm and stable. The design that the distance between the end face of the petal-shaped body 22 and the second side surface of the edge 21b is greater than or equal to the axial length of the limiting protrusion 12b makes it possible for a limiting protrusion 12b remaining at the front end to be located inside the recessed position after the excess plastic needle 1 is finally subtracted, thereby preventing this part from holding the soft rubber cap 3 and causing the soft rubber cap 3 to fall off due to force.

[0059] like Figure 3 As shown, the hole portion 23 is in the shape of an equilateral triangle, and a petal 22 extends from each side of the hole portion 23, and there is a spaced gap p between adjacent petals 22. The spaced gap p is provided to give the petals 22 a certain deformation space. Since the petals 22 extend from each side of the hole portion 23, this design gives the self-locking buckle 2 the ability to lock in multiple directions. The application of the triangular structure in the hole portion 23 design can significantly improve the overall stability of the structure. This stability is not only reflected in the ability to resist external pressure or impact, but also ensures that the petals 22 can evenly distribute force when subjected to force, reducing the risk of single-point force.

[0060] like Figure 2 , 3As shown, except for the root part where the needle body 12 transitions with the limit head 11, the tip part at the very front end, and the limit protrusion 12b, the outer diameter of the needle body 12a in the remaining parts is basically equal in diameter and smaller than the partition gap p, thus avoiding displacement changes of the needle body 12a through the partition gap p and further enhancing the stability of the entire structure.

[0061] As Figure 3 , 4 As shown, a cutting edge k is provided on the edge part 21b. The cutting edge k forms a gap between the position of the edge part 21b and the inner wall of the soft rubber cap 3. This gap serves as the starting point or guiding path for peeling, enabling the user to more easily find and apply force to start the peeling process. Compared with the case without the cutting edge k, this design significantly reduces the difficulty of peeling and improves the convenience of operation. At the same time, the setting of the cutting edge k also makes it easier for the self-locking buckle 2 to be grasped by fingers.

[0062] As Figure 6 As shown, the axial length L1 of the limit protrusion 12b is smaller than the distance L2 between two adjacent limit protrusions 12b. Such an interval distance enables a suitable space to be found for positioning between different limit protrusions 12b. Moreover, it avoids the problems of excessive friction force during needle insertion and lag in deformation recovery time caused by overly dense limit protrusions 12b.

[0063] As Figure 3 , 4 As shown, the soft rubber cap 3 includes a centrally raised dome part 31 and an annular outer peripheral part 32. The lower end of the annular outer peripheral part 32 is provided with an annular wrapping part 33 that bends horizontally inward. The annular outer peripheral part 32 wraps the outer peripheral wall of the edge part 21b, and the annular wrapping part 33 wraps the outer edge of the second side surface of the edge part 21b. The dome part 31 and the recess enclose a receiving cavity, and at least one limit protrusion 12b of the needle body 12a is located in the receiving cavity. The dome part 31 forms a front outer raised arc surface, which not only increases the space for avoiding the remaining part of the plastic needle 1 but also has a better touch, thereby further improving the comfort of the quilt after being fixed. The setting of the annular wrapping part 33 enables the soft rubber cap 3 to stably wrap the self-locking buckle 2 without the action of manual peeling force, avoiding damage to the quilt fabric and the human skin.

[0064] The above has provided a detailed introduction to a self-locking quilt fixing component provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A self-locking quilt fixing component, characterized in that: It includes a plastic needle, a self-locking buckle and a soft rubber cap; The plastic needle includes a limit head and a needle body from back to front. The needle body includes a needle main body and a plurality of limit protrusions spaced apart from each other on the middle section of the needle main body. The limit rear end surface of the limit protrusion is perpendicular to the axial direction of the needle main body, and the outer peripheral surface of the limit protrusion inclines inward from back to front to form a guiding inclined surface; The self-locking buckle includes a cap part and a flange part; the plastic needle is limited after passing through the cap part from the first side, and the soft rubber cap sleeves the flange part from the second side to flexibly shield the second side and the periphery of the self-locking buckle; The cap part forms a raised position on the first side and a sunken position on the second side; the cap part is provided with a self-locking part, and the self-locking part includes a hole part provided on the top wall of the cap part and at least three petal-shaped bodies axially inclined and extending from the inner edge of the hole part toward the second side; The petal-shaped bodies gradually converge toward the second side. The end surfaces of the three petal-shaped bodies are located on the same plane and enclose a through hole with an inner diameter smaller than the maximum diameter of the limit protrusion. A guiding part with a gradually decreasing aperture extending from the hole part to the through hole is formed on the first side of the cap part.

2. The self-locking quilt fixing assembly according to claim 1, wherein: The self-locking buckle is integrally formed of hard plastic, and the distance between the end surface of the petal-shaped body and the second side surface of the flange part is greater than or equal to the axial length of the limit protrusion.

3. The self-locking quilt fixing assembly according to claim 1, characterized in that: The hole part is in an equilateral triangle shape, and each side of the hole part extends a petal-shaped body, and there is a gap between adjacent petal-shaped bodies.

4. A self-locking quilt fixing assembly according to claim 1, characterized in that: The flange part is provided with a cutting edge, and the cutting edge forms a gap between the flange part and the inner wall of the soft rubber cap.

5. A self-locking quilt fixing assembly according to claim 3, characterized in that: The outer diameter of the needle main body is smaller than the gap between adjacent petal-shaped bodies.

6. The self-locking quilt fixing assembly according to claim 1, wherein: The axial length of the limit protrusion is smaller than the distance between two adjacent limit protrusions.

7. A self-locking quilt fixing component according to claim 1, characterized in that: The soft rubber cap includes a centrally raised dome part and an annular outer peripheral part, and the lower end of the annular outer peripheral part is provided with a laterally inwardly bent annular edge part.

8. A self-locking quilt fixing component, characterized in that: It includes a plastic needle and a self-locking buckle; The plastic needle includes a limit head and a needle body from back to front. The needle body includes a needle main body and a plurality of limit protrusions spaced apart from each other on the middle section of the needle main body. The limit rear end surface of the limit protrusion is perpendicular to the axial direction of the needle main body, and the outer peripheral surface of the limit protrusion inclines inward from back to front; The buckle body of the self-locking buckle forms a raised position on the first side and a sunken position on the second side; the self-locking buckle is provided with a self-locking part, and the self-locking part includes a hole part provided on the top wall of the self-locking buckle and at least three petal-shaped bodies integrally formed with the buckle body and extending from the inner edge of the hole part toward the second side; The petal-shaped bodies gradually converge toward the second side. The end surfaces of the three petal-shaped bodies are located on the same plane and enclose a through hole with an inner diameter smaller than the maximum diameter of the limit protrusion. A guiding part with a gradually decreasing aperture extending from the hole part to the through hole is formed on the first side of the self-locking buckle.

9. The self-locking quilt fixing assembly according to claim 8, characterized in that: It includes a soft rubber cap covering the buckle body. The buckle body includes a cap part and a flange part. The cap part forms a raised position relative to the flange part on the first side and a sunken position relative to the flange part on the second side; the soft rubber cap includes a centrally raised dome part and an annular outer peripheral part, and the lower end of the annular outer peripheral part is provided with a laterally inwardly bent annular edge part; The annular outer periphery wraps the outer peripheral wall of the edge portion, the annular edge wrapping portion wraps the outer edge of the second side surface of the edge portion, the dome top and the recess enclose to form a receiving cavity, and at least one limiting protrusion of the needle body is located in the receiving cavity.

10. A self-locking quilt fixing component according to claim 9, characterized in that: The hole portion is an equilateral triangle, and a petal-shaped body extends from each side of the hole portion, and there is a partition space between adjacent petal-shaped bodies; the needle body includes a needle body, and the diameter of the needle body is smaller than the partition space; the distance between the end surface of the petal-shaped body and the second side surface of the edge portion is greater than or equal to the axial length of the limiting protrusion.

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