WO2020238466A1

WO2020238466A1 - Washing machine and fastener applied to washing machine

Info

Publication number: WO2020238466A1
Application number: PCT/CN2020/085422
Authority: WO
Inventors: 斯雷登斯克乌尔; 博古维克罗比
Original assignee: 海信（山东）冰箱有限公司; 戈兰尼亚家电有限公司
Priority date: 2019-05-27
Filing date: 2020-04-17
Publication date: 2020-12-03
Also published as: CN113677845A; SI25844A

Abstract

A washing machine (100), comprising a cabinet (2), a washing tub (4), a drum (5), a hook (6), a shock absorber (7) and a fastener (1). The washing tub (4) is arranged in the cabinet (2) and is connected with the cabinet (2). The drum (5) is arranged in the washing tub (4) to receive the laundry to be cleaned and is configured to rotate relative to the washing tub (4). The first end of the hook (6) is connected with the washing tub (4), and the second end of the hook (6) is connected with the upper portion of the inner side wall of the cabinet (2). The first end of the shock absorber (7) is connected with the washing tub (4), and the second end of the shock absorber (7) is connected with the lower portion of the inner side wall of the cabinet (2), to transfer and attenuate the force generated by the drum (5) during the operation of the washing machine (100). The fastener (1) is configured to connect the first end of the shock absorber (7) with the washing tub (4), and includes a main body part (15), a first end (13), a second end (12) and at least one protrusion (19). The main body part (15) is in a cylindrical shape. The first end (13) is in a cylindrical shape with a diameter greater than the main body part (15). The second end (12) is in a cone shape with a diameter tapering away from the main body part (15). At least one protrusion (19) is arranged on at least a part of the circumference of the second end (12), which prevents the fastener (1) from sliding out of a rubber sleeve (9) and even fall when a worker installs the lubricant-applied fastener (1) but the fastener (1) is not pressed into the rubber sleeve (9) to a sufficient depth.

Description

Washing machine and fastener applied to the washing machine

This application claims the priority of the Slovenian patent application filed with the Slovenian Intellectual Property Office with application number P-201900104 on May 27, 2019, the entire content of which is incorporated into this application by reference.

Technical field

The present disclosure relates to a washing machine, and more particularly to a fastener applied to the washing machine.

Background technique

The washing machine includes a cabinet and a washing drum located in the cabinet. The washing drum is connected to the upper part of the cabinet through a spring and is connected to the lower part of the cabinet through a shock absorber. When the washing machine is working, the shock absorber can transmit and weaken the force generated by the washing drum during operation, thereby reducing the vibration transmitted from the washing drum to the cabinet.

Summary of the invention

In one aspect, a washing machine is provided. The washing machine includes a cabinet, a washing drum, a drum, a hook, a shock absorber and a fastener. The washing drum is arranged in the cabinet and connected with the cabinet. The drum is located in the washing drum to receive laundry to be washed, and is configured to rotate relative to the washing drum. The first end of the hook is connected with the washing tub, and the second end of the hook is connected with the upper part of the inner side wall of the cabinet. The first end of the shock absorber is connected with the washing drum, and the second end of the shock absorber is connected with the lower part of the inner side wall of the cabinet to transmit and weaken the production of the drum during the operation of the washing machine. Power. The fastener is configured to connect the first end of the shock absorber with the washing tub, and includes a main body portion, a first end, a second end, and at least one protrusion. The main body part is cylindrical. The first end has a cylindrical shape with a larger diameter than the main body part. The second end is in the shape of a cone whose diameter is tapered along a direction away from the main body part. The at least one protrusion is located on at least part of the circumference of the second end.

In another aspect, a fastener is provided. The fastener is configured to connect the shock absorber in the washing machine with the washing tub, and includes a main body portion, a first end, a second end, and at least one protrusion. The main body part is cylindrical. The first end has a cylindrical shape with a larger diameter than the main body part. The second end is in the shape of a cone whose diameter is tapered along a direction away from the main body part. The at least one protrusion is located on at least part of the circumference of the second end.

Description of the drawings

In order to explain the technical solutions of the present disclosure more clearly, the following will briefly introduce the drawings that need to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description are merely appendices to some embodiments of the present disclosure. Figures, for those of ordinary skill in the art, other drawings can be obtained based on these drawings. In addition, the drawings in the following description may be regarded as schematic diagrams, and are not limitations on the actual size of the products involved in the embodiments of the present disclosure, the actual process of the method, and the actual timing of the signals.

Figure 1 is a structural diagram of a fastener according to the related technology;

Figure 2A is a structural diagram of a washing machine according to some embodiments of the present disclosure;

Figure 2B is a structural diagram of another washing machine according to some embodiments of the present disclosure;

Figure 3 is a structural diagram of a shock absorber connected to a washing tub according to some embodiments of the present disclosure;

Figure 4A is a structural diagram of a fastener according to some embodiments of the present disclosure;

Figure 4B is a structural diagram of another fastener according to some embodiments of the present disclosure;

Figure 4C is a structural diagram of another fastener according to some embodiments of the present disclosure;

Fig. 5 is a longitudinal sectional view of Fig. 4A.

Detailed ways

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art fall within the protection scope of the present disclosure.

Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms such as the third-person singular form "comprises" and the present participle form "comprising" are Interpreted as open and inclusive means "including, but not limited to."

In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" "example)" or "some examples" are intended to indicate that a specific feature, structure, material, or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any suitable manner.

Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

As shown in FIG. 2A, some embodiments of the present disclosure provide a washing machine 100. The washing machine 100 includes a cabinet 2, a washing drum 4, a drum 5, a hook 6 and a shock absorber 7. The cabinet 2 has an input port 201 for putting laundry formed on the front surface of the cabinet 2. FIG. 2A is a screen obtained when an observer stands directly in front of the input port 201 and observes the washing machine 100. The washing tub 4 is provided in the cabinet 2 and contains washing water, and has an open front surface communicating with the input port 201. The drum 5 is provided in the washing tub 4 in a rotatable manner and contains laundry. The first end of the hook 6 is connected to the washing drum 4, and the second end of the hook 6 is connected to the upper part of the inner side wall of the cabinet 2, thereby connecting the washing drum 4 to the upper part of the cabinet 2. The hook 6 may be an elastic element, such as the hook with a spring shown in FIG. 2A, or a rigid element, such as the hook without a spring shown in FIG. 2B. The embodiment of the present disclosure does not limit this, as long as the hook 6 can play the role of connecting the washing tub 4 with the chassis 2. The first end of the shock absorber 7 is connected with the washing drum 4, and the second end of the shock absorber 7 is connected with the lower part of the inner side wall of the case 2, thereby connecting the washing drum 4 with the lower part of the case 2. The shock absorber 7 can transmit and attenuate the force generated during the rotation of the drum 5 and the vibration caused by the force (the force and vibration are first transmitted from the drum 5 to the washing drum 4), thereby reducing the transmission from the washing drum 4 Vibration to chassis 2.

In order to connect the first end of the shock absorber 7 to the washing tub 4, the washing machine 100 further includes a fastener 1. Fig. 3 is a schematic view showing the connection between the shock absorber 7 and the washing drum 4 on the right side of the washing machine shown in Fig. 2A or Fig. 2B. As shown in Fig. 3, the washing drum 4 includes at least two mounting bars 10, for example, there are two mounting bars 10 on the lower left and right sides of the washing drum 4 shown in Figs. 2A and 2B. At least two mounting bars 10 are located on the outer circumference of the washing tub 4, and each mounting bar 10 has a through hole 11, and the through holes 11 on the two opposite mounting bars 10 are coaxial. The first end of the shock absorber 7 includes a fixing lug 8 with a rubber sleeve 9, and the fixing lug 8 can be inserted between two mounting strips 10 arranged oppositely. The fastener 1 can pass through the through hole 11 and the rubber sleeve 9 to connect the first end of the shock absorber 7 with the washing tub 4.

To this end, as shown in Fig. 1, related art EP2348149A1 discloses a fastener 01 for mounting a shock absorber to a washing machine. The fastener 01 has a flange 02 at one end and a tapered part 03 at one end. The fastener 01 has a hollow cylindrical shape and can form a close fit with the through hole 11 on the mounting bar 10 and the rubber sleeve 9 in the fixing ear 8. The fastener 01 also includes a notch 05. The notch 05 is provided on the circumference of the fastener 01 opposite to the elastic buckle 04, and extends along the axial direction of the fastener 01, so that the fastener 01 is installed Appropriate elastic deformation can occur in the process. After the fastener 01 is in the correct installation position, the flange 02 can prevent the fastener 01 from moving further in the axial direction, thereby preventing the fastener 01 from falling off the mounting strip 10. When the fastener 01 is initially installed, the structure of the tapered portion 03 facilitates the insertion of the fastener 01 into the through hole 11 and the rubber sleeve 9. The fastener 01 also includes an elastic buckle 04. The elastic buckle 04 is roughly arranged on the tapered portion 03. During the installation of the fastener 01, the elastic buckle 04 retracts toward the inside of the fastener 01; After the component 01 is in the correct installation position, the elastic buckle 04 can prevent the fastener 01 from moving in the axial direction, thereby preventing the fastener 01 from falling off the mounting strip 10.

In order to fix the fastener 01 in the radial direction of the shock absorber 7 so as to prevent additional vibration, the diameter of the fastener 01 is slightly larger than the diameter of the rubber sleeve 9 in the fixing ear 8. Although the diameter of the fastener 01 is only slightly larger than the diameter of the rubber sleeve 9, the force required to insert the fastener 01 is greatly increased. In addition, in order to ensure that the fastener 01 has sufficient stability or a correct position before being further inserted into the through hole 11 and the rubber sleeve 9 with a special tool, a fastener of at least one third of the length must be manually installed. Therefore, when the fastener 01 is inserted into the through hole 11 and the rubber sleeve 9, the friction between the fastener 01 and the rubber sleeve 9 must be overcome, and the elasticity of the fastener 01 through the through hole 11 and the rubber sleeve 9 must be overcome. The force exerted by the buckle 04 thus requires greater force. In order to reduce the initial force required for the fastener 01 to pass through the through hole 11, especially the rubber sleeve 9, a lubricant is usually applied to the fastener 01 to reduce friction. However, if the worker does not press the fastener 01 into the rubber sleeve 9 to a sufficient depth when manually inserting the fastener 01, the fastener 01 will be removed from the rubber sleeve 9 due to the lubricant applied to the fastener 01. It slips out or even falls, which interrupts the work flow and reduces work efficiency.

Some embodiments of the present disclosure provide a fastener 1, see FIGS. 4A-4C and FIG. 5. The fastener includes a body portion 15, a first end 13, a second end 12 and at least one protrusion 19. The main body 15 is cylindrical, and its diameter forms a close fit with the through hole 11 on the mounting bar 10 and the rubber sleeve 9 in the fixing ear 8. The first end 13 has a cylindrical shape with a diameter larger than that of the main portion 15, which can prevent the fastener 1 from moving further in the axial direction, thereby preventing the fastener 1 from falling off the mounting bar 10. The second end 12 has a conical shape with a tapered diameter in a direction away from the main body portion 15, so that when the fastener 1 is initially installed, the fastener 1 is easily inserted into the through hole 11 and the rubber sleeve 9. At least one protrusion 19 is provided on at least part of the circumference of the second end 12. In the process of installing the fastener 1, at least one protrusion 19 can act as a wedge, wedging into the rubber sleeve 9, preventing the fastener 1 from sliding under lubrication, thereby preventing workers from installing the lubricant-applied fastener 1 At this time, if the fastener 1 is not pressed into the rubber sleeve 9 to a sufficient depth, the fastener 1 will slip out of the rubber sleeve 9 or even fall.

Since at least one protrusion 19 is located on the second end 12 that first extends into the rubber sleeve 9, even if the fastener 1 is inserted into the rubber sleeve 9 to a minimum, the stability of the fastener 1 can be achieved, and workers do not need to The fastener 1 is manually inserted into at least one third of the length, and the length of the second end 12 does not need to be as long as possible to reduce the force required when inserting the fastener 1, so that the length of the second end 12 can be greatly shortened.

In some embodiments of the present disclosure, as shown in FIG. 4A, at least one protrusion 19 is in the shape of a circular ring and is arranged around the circumference of the second end 12; as shown in FIG. 4B, at least one protrusion 19 is in the shape of a fan ring and surrounds the second end 12. Part of the end 12 is circumferentially arranged.

In some embodiments of the present disclosure, the at least one protrusion 19 includes a plurality of protrusions. As shown in FIG. 4B, the at least one protrusion 19 includes a first protrusion 191 and a second protrusion 192, and the first protrusion 191 and the second protrusion 192 are fan-shaped The shape is set on the circumference of the second end 12. Providing a plurality of protrusions in the shape of a fan ring can make the shape and size of each protrusion slightly different. These protrusions have a better effect on preventing the fastener 1 from slipping out or falling out of the rubber sleeve 9. For example, the height of the first protrusion 191 from the circumference of the second end 12 may be slightly greater than the height of the second protrusion 192 from the circumference of the second end 12.

The first protrusion 191 and the second protrusion 192 are staggered on the circumference of the second end 12, that is, the orthographic projection of the first protrusion 191 on the cross section of the fastener 1 and the second protrusion 192 on the cross section of the fastener 1 The orthographic projections on are not completely overlapped, and the two can be partially overlapped or not overlapped at all. This can ensure that the plurality of protrusions 19 are approximately distributed on the entire circumference of the second end 12, so that basically there is sufficient friction between any part of the circumference of the second end 12 and the rubber sleeve 9.

In addition, the first protrusions 191 and the second protrusions 192 are spaced apart in the axial direction of the second end 12, that is, distributed on different circumferences of the second end 12 along the axial direction of the second end 12. But it is not limited to this, and the first protrusion 191 and the second protrusion 192 may be joined together to form a circular ring shape.

Although FIG. 4B shows two protrusions 19, it is not limited thereto. In some embodiments of the present disclosure, the at least one protrusion may include one protrusion, or may include three or more protrusions.

In some embodiments of the present disclosure, as shown in FIG. 4C, the at least one protrusion 19 includes a third protrusion 193 and a fourth protrusion 194. The third protrusion 193 is provided on the circumference of the second end 12 in a ring shape, and the fourth protrusion 194 is arranged on the circumference of the second end 12 in the shape of a fan ring, and the third protrusion 193 and the fourth protrusion 19 are arranged at intervals along the axial direction of the second end 12. Although FIG. 4C shows two protrusions 19, it is not limited thereto. In some embodiments of the present disclosure, the at least one protrusion may include three or more protrusions, and these protrusions may be ring-shaped or fan-shaped. Ring-shaped. In some embodiments, the ring-shaped protrusions and the fan ring-shaped protrusions are alternately arranged, which can cause greater friction between some parts of the second end 12 and the rubber sleeve 9. For example, in order to overcome the gravity of the fastener 1, when the fastener 1 is manually pressed into the rubber sleeve 9 by hand, it is usually desirable that the upper half of the circumference of the second end 12 and the rubber sleeve 9 are larger than other parts. Of friction.

In addition, in the related art shown in FIG. 1, the practice of applying lubricant on the fastener 01 does not guarantee that there is always sufficient lubricant on the surface of the fastener 01. The fastener 01 and the rubber sleeve 9 Friction may still occur between them, causing the rubber sleeve 9 to be deformed and damaged, and may break and fall off from the fixed ear 8, thereby generating additional vibration and noise during the operation of the washing machine. In some cases, the connection part of the washing tub 4 and the shock absorber 7 may also malfunction due to the damage of the rubber sleeve 9.

In order to avoid the above-mentioned problem, the fastener 1 further includes a first groove 20. As shown in FIG. 5, the first groove 20 is formed by at least one side surface of the protrusion 19 close to the main body portion 15 and the second end 12 adjacent to the side surface and close to the outer side surface of the main body portion 15. That is, the first groove 20 is located at at least one Between the protrusion 19 and the area where the second end 12 is close to the main body portion 15. The first groove 20 can contain a sufficient amount of lubricant. When the fastener is initially installed, lubricant is added to the first groove 20; when the fastener passes through the through hole 11 and is inserted into the rubber sleeve 9, the lubricant stored in the first groove 20 is evenly distributed On the main part 15 of the fastener 1, the friction coefficient between the fastener 1 and the rubber sleeve 9 is significantly reduced. Therefore, the rubber sleeve will not deform and therefore will not tear.

Although FIG. 4A only uses a reference numeral to designate one first groove 20, it should be understood that, in some embodiments of the present disclosure, the first groove 20 may correspond to at least one protrusion 19 one-to-one. Of course, the number of the first grooves 20 may also be smaller than the number of at least one protrusion 19, that is, some protrusions 19 are not correspondingly provided with the first grooves 20.

In order to avoid that the fastener 1 is in the correct installation position, the force generated during the rotation of the drum 5 and the vibration caused by the force cause the fastener to move in the axial direction, thereby causing the fastener 1 to fall off the mounting strip 10 The fastener 1 further includes an elastic buckle 17 which is arranged in the area of the main body 15 close to the second end 12. The elastic buckle 17 includes a buckle 16 and an elastic piece 18. During the installation of the fastener, the buckle 16 retracts toward the inside of the fastener 1; after the fastener is in the correct installation position, the buckle 16 returns to the initial state , And abut the mounting strip 10, thereby preventing the fastener 1 from moving in the axial direction.

In order to further ensure that there is sufficient lubricant on the surface of the fastener 1, the fastener 1 further includes a second groove 21. As shown in Fig. 5, the second groove 21 is located on the outer side wall of the elastic buckle 17, which can hold a sufficient amount of lubricant. When the fastener passes through the through hole 11 and inserts the rubber sleeve 9, the lubricant stored in the second groove 21 is evenly distributed on the main part 15 of the fastener 1, which significantly reduces the fastener 1 and rubber Coefficient of friction between sets of 9. In addition, the second groove 21 reduces the thickness of the elastic sheet 18, which helps to improve the elastic strength and plastic deformation limit of the elastic buckle 17 and prevent the elastic buckle 17 from plastic deformation. Therefore, after the fastener 1 is determined to be inserted into the through hole 11 and the rubber sleeve 9, the elastic buckle 17 always returns to the initial position and prevents the fastener 1 from moving in the axial direction.

In some embodiments of the present disclosure, as shown in FIG. 5, the fastener 1 further includes a notch 22. The notch 22 is provided at a position opposite to the elastic buckle 17 on the circumference of the fastener 1, along the The axial extension can make the fastener 1 undergo proper elastic deformation during the installation process, and facilitate the insertion of the fastener 1 into the through hole 11 and the rubber sleeve 9.

In some embodiments of the present disclosure, as shown in FIGS. 4A to 4C, the side of the second end 12 away from the main body 15 is flat, and the second end 12 is in the shape of a truncated cone as a whole, which not only facilitates the insertion of the fastener into the through hole 11 and The rubber sleeve 9 is also easy to manufacture and process. In addition, the shape of the truncated cone can also prevent the diameter of the second end 12 from being too sharply tapered in the direction away from the main portion 15, so that the second end 12 has a sufficiently large outer contour in the radial direction, so that the fastener 1 When the rubber sleeve 9 is manually pressed into the rubber sleeve 9 initially, a certain contact can be formed with the rubber sleeve 9 to ensure that the fastener 1 does not slip or fall out of the rubber sleeve 9.

When installing the fastener 1, it is necessary to minimize the force required to insert the fastener 1 into the rubber sleeve 9. If the second end 12 is too short, it is not conducive for the fastener 1 to be inserted into the rubber sleeve 9; after the installation is completed, the second The end 12 will completely protrude from the through hole 11 of the mounting bar 10. If the second end 12 is too long, it will interfere with other components in the washing machine 100. Therefore, the ratio of the axial length of the second end 12 to the axial length of the main body portion 15 is approximately in the range of 1/6 to 1/5 (for example, 0.16 to 0.2). In some embodiments, the ratio is selected to be 0.17, 0.18, 0.19, or 0.2.

In addition, in some embodiments, the axial length of the second end 12 can also be set to be smaller than the axial length of the elastic buckle 17. This allows the second end 12 to have a smaller axial length. When the fastener 1 is initially manually pressed into the rubber sleeve 9, in addition to the second end 12 entering the rubber sleeve 9, at least the elastic buckle 17 Part of it goes into the rubber sleeve 9. Since the elastic buckle 17 has a restoring force to restore the elastic deformation, the elastic buckle 17 can abut against the inner side wall of the rubber sleeve 9 and apply a certain force to the rubber sleeve 9 to further prevent the fastener 1 from being removed from the rubber sleeve 9 Sliding out or falling in the middle.

The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who thinks of changes or substitutions within the technical scope disclosed in the present disclosure shall cover Within the protection scope of this disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A washing machine including:

Chassis

A washing drum, the washing drum is arranged in the chassis and connected with the chassis;

A drum, the drum is located in the washing drum to receive laundry to be washed, and is configured to rotate relative to the washing drum;

A hook, the first end of the hook is connected with the washing tub, and the second end of the hook is connected with the upper part of the inner side wall of the chassis;

A shock absorber, the first end of the shock absorber is connected to the washing tub, and the second end of the shock absorber is connected to the lower part of the inner side wall of the cabinet to transmit and weaken the operation of the washing machine. The force generated by the drum;

A fastener configured to connect the first end of the shock absorber with the washing tub; wherein,

The fastener includes:

The main body part, the main body part is cylindrical;

A first end, the first end is cylindrical with a diameter larger than that of the main body part;

A second end, the second end being a cone shape with a diameter tapering along a direction away from the main body part;

At least one protrusion, the at least one protrusion is located on at least a part of the circumference of the second end.
The washing machine according to claim 1, wherein the at least one protrusion is provided on the circumference of the second end in a ring shape.
The washing machine according to claim 1, wherein the at least one protrusion is provided on the circumference of the second end in a fan ring shape.
The washing machine according to claim 3, wherein the at least one protrusion includes a plurality of protrusions that are staggered in the circumferential direction of the circumference of the second end and are spaced apart in the axial direction of the second end Set up.
The washing machine according to claim 1, wherein the at least one protrusion includes a plurality of protrusions, a part of the plurality of protrusions is provided on the circumference of the second end in a ring shape, and a part of the protrusions is in a fan ring shape. Provided on the circumference of the second end; and,

The ring-shaped protrusions and the fan-ring shaped protrusions are spaced apart in the axial direction of the second end.
The washing machine according to claim 1, wherein the fastener further comprises a first groove located between the at least one protrusion and an area where the second end is close to the main body portion .
The washing machine according to claim 1, wherein the fastener further comprises:

An elastic buckle, the elastic buckle is located in a region of the main body part close to the second end;

The second groove is located on the outer side wall of the elastic buckle.
The washing machine according to claim 7, wherein the axial length of the second end is smaller than the axial length of the elastic buckle.
The washing machine according to claim 1, wherein a side of the second end away from the main body part is closed in a plane.
The washing machine according to claim 1, wherein the ratio of the axial length of the second end to the axial length of the main body part is in the range of 1/6 to 1/5.
A fastener configured to connect a shock absorber in a washing machine with a washing drum; wherein,

The fastener includes:

The main body part, the main body part is cylindrical;

A first end, the first end is cylindrical with a diameter larger than that of the main body part;

A second end, the second end being a cone shape with a diameter tapering along a direction away from the main body part;

At least one protrusion, the at least one protrusion is located on at least a part of the circumference of the second end.
The fastener according to claim 11, wherein the at least one protrusion is provided on the circumference of the second end in a circular ring shape or a fan ring shape.
The fastener according to claim 11, wherein the at least one protrusion includes a plurality of protrusions, a part of the plurality of protrusions is provided on the circumference of the second end in a ring shape, and a part of the protrusions is fanned The ring shape is arranged on the circumference of the second end; and,

The ring-shaped protrusions and the fan-ring shaped protrusions are spaced apart in the axial direction of the second end.
The fastener according to claim 11, further comprising a first groove located between the at least one protrusion and a region of the second end near the main body portion.
The fastener according to claim 11, further comprising:

An elastic buckle, the elastic buckle is located in a region of the main body part close to the second end;

The second groove is located on the outer side wall of the elastic buckle.