Clothes hanger

Abstract

According to the technical scheme, the clothes hanger comprises an airing frame and a hook, clamps are installed on the airing frame, the clothes hanger is characterized by further comprising a connecting rod, the length of the connecting rod is adjustable, the hook can be detachably connected with one end of the connecting rod or the airing frame, and the other end of the connecting rod can be detachably connected with the airing frame. Compared with the prior art, through the length-adjustable connecting rod, a user can flexibly adjust the distance between the hook and the frame to adapt to the height of the user and the height of the balcony clothes airing rod from the ground, so that the user only needs to hold the frame and lift the frame, and the hook can be higher than the balcony clothes airing rod; therefore, the clothes hanger can be easily hung or taken down without the aid of tools such as a clothes fork and a stool, and the experience of a user during clothes airing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household articles, in particular to a water squeezing roller, a water squeezing component and a mop bucket. Background Art

[0002] In modern society, people usually use clothes hangers with clips to dry small-sized clothes such as socks and underwear. Such clothes hangers are usually called sock hangers, which are small hangers composed of multiple clips, a frame and hooks 100 and are hung on balconies or outdoors for people to dry clothes.

[0003] During daily use, the sock rack is hung on a high balcony clothesline or clothesline, and clothes are fixed or removed by operating the clips. Currently, the hooks 100 of sock racks on the market are all short, and the distance between the hooks 100 and the frame cannot be adjusted when hung. Short users need tools such as clothes forks and stools to hang and remove the sock rack, which is a poor user experience. Summary of the Invention

[0004] The purpose of the present invention is to address the above shortcomings and provide a clothes drying rack that can change its height.

[0005] The solution adopted by the present invention to solve the technical problem is a clothes drying rack, including a drying frame 200 and a hook 100, and a clip is installed on the drying frame 200. The characteristic is that it also includes a connecting rod 300, the length of the connecting rod 300 is adjustable, the hook 100 can be detachably connected to one end of the connecting rod 300 or the drying frame 200, and the other end of the connecting rod 300 can be detachably connected to the drying frame 200.

[0006] Furthermore, the connecting rod 300 is composed of at least one rod monomer 310, and several rod monomers 310 can be detachably connected end to end in sequence.

[0007] Furthermore, the hook 100 is provided with a first connecting part 3101; the drying frame 200 is provided with a first connecting part 3102; the rod monomer 310 is provided with a first connecting part 3101 at one end and a second connecting part 3102 at the other end; the first connecting part 3101 can be detachably connected to the second connecting part 3102.

[0008] Furthermore, one of the first connection portion 3101 and the second connection portion 3102 is a threaded hole, and the other is a threaded rod.

[0009] Furthermore, the drying frame 200 is further provided with a first connecting portion 3101 ; two upper and lower adjacent drying frames 200 can be connected into one through a connecting rod 300 .

[0010] Furthermore, the first connecting part 3101 includes a base; a connector is provided on the base, and the connector can be detachably connected to the second connecting part 3102; the base can be rotatably installed on the hook 100, the drying frame 200 and the rod monomer 310.

[0011] Furthermore, an adapter 210 is rotatably mounted at the center of the drying frame 200 ; a second connecting portion 3102 is provided at the top end of the adapter 210 , and a first connecting portion 3101 is provided at the bottom end.

[0012] Furthermore, the adapter 210 is a base shaft, and the drying frame 200 is provided with a through hole for the base shaft to pass through; at least two elastic arms are evenly distributed on the outer circumference of the base shaft; a limiting portion 2104 is provided on the base shaft above the elastic arm; the distance between the elastic arm and the limiting portion 2104 is not less than the length of the through hole.

[0013] Furthermore, the adapter 210 is a base shaft, and the drying frame 200 is provided with a through hole for the base shaft to pass through; at least two supporting protrusions 2105 are evenly distributed on the outer circumference of the base shaft; a limiting portion 2104 is provided on the base shaft above the supporting protrusion 2105; the distance between the supporting protrusion 2105 and the limiting portion 2104 is not less than the length of the through hole.

[0014] Furthermore, the base shaft includes an upper base, an elastic deformation part 2102 and a lower base connected in sequence; at least two elastic deformation parts 2102 are provided, and the elastic deformation parts 2102 are evenly distributed around the circumference of the base shaft axis; the supporting protrusion 2105 is provided on the outer side of the elastic deformation part 2102; the limiting part 2104 is provided at the bottom end of the upper base.

[0015] Compared with the prior art, the present invention has the following beneficial effects: through the length-adjustable connecting rod 300, the user can flexibly adjust the distance between the hook 100 and the frame to adapt to the user's height and the height of the balcony clothesline from the ground, so that the user only needs to hold the frame and lift the frame, and the height of the hook 100 can be higher than the balcony clothesline, and then the operation of hanging or removing the clothesline can be easily achieved without the help of tools such as clothes forks and stools, thereby improving the user's experience when drying clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the connection between the hook 100 and the drying frame 200.

[0017] Figure 2 It is a schematic diagram showing that the hook 100 is connected to the drying frame 200 via the connecting rod 300.

[0018] Figure 3It is a schematic diagram of two adjacent drying frames 200 connected to each other through a connecting rod 300 to form a multi-layer clothes drying rack.

[0019] Figure 4 It is a schematic diagram of two rod monomers 310 connected end to end to form a connecting rod 300.

[0020] Figure 5 Schematic diagram showing that the first connecting portion 3101 and the second connecting portion 3102 on the rod monomer 310 are respectively a threaded rod and a threaded hole.

[0021] Figure 6 It is a schematic diagram of a connection method that forms a rotational connection between the drying frame 200 and the adapter 210.

[0022] Figure 7 It is a structural diagram of the adapter 210 described in Example 7.

[0023] Figure 8 It is a structural diagram of a structural form of the drying frame 200.

[0024] Figure 9 It is a structural diagram of another structural form of the drying frame 200.

[0025] Figure numerals: 100, hook; 200, drying frame; 300, connecting rod; 310, rod unit; 3101, first connecting part; 3102, second connecting part; 210, adapter; 2102, elastic deformation part; 2104, limiting part; 2105, supporting protrusion. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] Example 1

[0028] A clothes drying rack includes a drying frame 200 and a hook 100. The drying frame 200 is mounted with a clip. The rack also includes a connecting rod 300 of adjustable length. The hook 100 can be detachably connected to one end of the connecting rod 300 or the drying frame 200. The other end of the connecting rod 300 can be detachably connected to the drying frame 200.

[0029] Preferably, the connecting rod 300 is composed of at least one rod monomer 310, and several rod monomers 310 can be detachably connected end to end in sequence.

[0030] Preferably, the hook 100 is provided with a first connecting portion 3101;

[0031] The drying frame 200 is provided with a second connecting portion 3102;

[0032] The rod monomer 310 is provided with a first connecting portion 3101 at one end and a second connecting portion 3102 at the other end;

[0033] The first connection portion 3101 can be detachably connected to the second connection portion 3102 .

[0034] When drying small-sized clothes, if the clothesline is too high from the person drying the clothes, then when drying the clothes, you must use a clothes fork or a stool to place the sock rack on the clothesline, which makes the drying process more cumbersome.

[0035] In the present invention, when the hook 100 is connected to the drying frame 200, the hook 100 is close to the drying frame 200. When drying clothes, for a low drying rod, the user can directly hold the drying frame 200 and hang the clothes drying rack on the drying rod.

[0036] When faced with a higher clothesline, the user can adjust the connecting rod 300 to an appropriate length before drying, then remove the hook 100 from the drying frame 200, and then use the second connecting part 3102 of the connecting rod 300 to connect the first connecting part 3101 of the hook 100, and use the first connecting part 3101 of the connecting rod 300 to connect the second connecting part 3102 of the drying frame 200, and finally increase the height of the hook 100 from the drying frame 200, so that when the user holds the drying frame 200 in hand, the hook 100 can be higher than the clothesline, and then the clothesline can be easily hung on the clothesline, thereby improving the user experience.

[0037] When the length of the connecting rod 300 needs to be extended, the first connecting part 3101 of the new rod monomer 310 is connected to the second connecting part 3102 on the existing connecting rod 300. When the length of the connecting rod 300 needs to be shortened, some of the rod monomers 310 are removed from the connecting rod 300. In actual applications, the lengths of each rod monomer 310 can also be designed to be the same or different, so as to flexibly adjust the total length of the connecting rod 300 according to actual needs.

[0038] At the same time, when in use, the connecting rod 300 and the hook 100 are arranged vertically, and the drying frame 200 occupies space horizontally. Transporting the clothes drying rack directly in the use state will take up a lot of space. However, when transporting, the clothes drying rack can be disassembled into the hook 100, the connecting rod 300 and the drying frame 200, which reduces the space they occupy and facilitates transportation.

[0039] It should be noted that the connecting rod 300 can also be designed as a telescopic rod with a self-locking function, and a scissor frame with a self-locking function. Figure 1-9 The drying frame 200 can have several models to accommodate different numbers of clips.

[0040] Example 2

[0041] Based on Example 1, the connection form of the first connection part 3101 and the second connection part 3102 is specifically described. Figure 5 As shown, preferably, one of the first connection part 3101 and the second connection part 3102 is a threaded hole, and the other is a threaded rod, so that the first connection part 3101 and the second connection part 3102 are threadedly connected.

[0042] In actual use, a locking member is further provided between the first connecting portion 3101 and the second connecting portion 3102. The locking member is used to simultaneously apply a locking force to the first connecting portion 3101 and the second connecting portion 3102 after the first connecting portion 3101 and the second connecting portion 3102 are locked. When one of the first connecting portion 3101 and the second connecting portion 3102 is a threaded hole and the other is a threaded rod, the locking member is a spring washer or a rubber ring mounted on the threaded rod.

[0043] It should be noted that the first connection portion 3101 and the second connection portion 3102 may also be snap-fit ​​connections. For example, the first connection portion 3101 may be a spring pin, and the second connection portion 3102 may be a corresponding spring lock.

[0044] Example 3

[0045] On the basis of embodiment 1, preferably, the drying frame 200 is further provided with a first connecting portion 3101;

[0046] like Figure 3 As shown, two adjacent drying frames 200 can be connected into one by a connecting rod 300.

[0047] Specifically, the second connection portion 3102 is provided on the top surface of the drying frame 200, and the first connection portion 3101 is provided on the bottom surface.

[0048] Currently, the hanging racks on the market (such as clothes hangers, trouser hangers, sock hangers, etc.) generally adopt a horizontally spread structure. If more clothes are to be hung, more hanging racks must be used, which takes up a large plane space, which brings inconvenience to some residents with limited living space.

[0049] Moreover, the drying frame 200 is located at the bottom of the entire clothes drying rack, and there is only a vertical connecting rod 300 in the vertical space from the drying frame 200 to the hook 100, resulting in that clothes cannot be dried in the space, thereby making the space underutilized.

[0050] In order to utilize more space for drying clothes, a first connecting part 3101 is provided on the bottom surface of the drying frame 200. At this time, if the user needs to dry a large number of small-sized clothes, the new connecting rod 300 can be directly connected to the bottom surface of the original drying frame 200 through the provided first connecting part 3101. The new connecting rod 300 is connected to the second connecting part 3102 of a new drying frame 200 at the bottom through its own first connecting part 3101, so that the clothes drying rack has a multi-layer drying frame 200 structure distributed from top to bottom. The user can hang clothes on each layer of drying frame 200, and then hang the clothes drying rack on the drying rod. Compared with the clothes drying rack with only one drying frame 200, the clothes drying rack with multiple layers of clothes drying frames can dry more clothes, utilize more space, and improve the drying efficiency.

[0051] At the same time, since the lengths of the rod monomers 310 can be designed to be different, users can flexibly choose rod monomers 310 of different lengths and different numbers to connect them into connecting rods 300 of different lengths for connecting upper and lower adjacent drying frames 200, so that the spacing between the drying frames 200 can be changed to match the length of the clothes to be dried. If you want to dry long small items of clothing such as ties and socks, you can use longer connecting rods 300 to connect adjacent drying frames 200, so that there is enough space under the drying frames 200, so that the clothes can be fully stretched when drying, avoiding the problem that long clothes are folded due to lack of space, making it difficult to dry. When drying shorter clothes such as handkerchiefs and socks, because they can stretch in a smaller space, you can use shorter connecting rods 300 to connect adjacent drying frames 200, so that more drying frames 200 can be arranged at the same vertical height, and more clothes can be dried in the same space.

[0052] Example 4

[0053] Based on Example 1 or Example 3, preferably, the first connecting portion 3101 includes a base;

[0054] The base is provided with a connector, which can be detachably connected to the second connecting portion 3102;

[0055] The base is rotatably mounted on the hook 100 , the drying frame 200 and the rod unit 310 .

[0056] When drying socks, due to the obstruction of other clothes or obstacles near the clothes drying rack, only part of the clothes drying rack can be directly exposed to sunlight in a sunny environment, while the other part is not exposed to sunlight and is in a shaded environment. As a result, the clothes in the sunny environment on the clothes drying rack dry faster than the clothes in the shaded environment.

[0057] Since as long as there are wet clothes on the clothes rack, they still need to be dried, so the drying speed of all clothes is dragged down by the clothes in the shade.

[0058] Furthermore, in order to increase the drying speed, it is necessary to ensure that the clothes on the clothes drying frame are evenly exposed to sunlight. In this embodiment, the first connecting part 3101 is provided with a rotatable base, so that after the clothes drying rack is assembled, no matter how many clothes drying frames the clothes drying rack has, each clothes drying frame can rotate around the adjacent connecting rod 300, so that when drying clothes, the user can rotate the drying frame 200 at regular intervals to change the drying position of the clothes, so that each piece of clothing can be exposed to sunlight, avoiding the problem of some clothes being left in the shade to dry and the drying time being prolonged.

[0059] At the same time, since the hook 100 is provided with a first connecting portion 3101, the connecting rod 300 or the drying frame 200 connected to the hook 100 can rotate around the hook 100. When the wind blows, the connecting rod 300 or the drying frame 200 below the hook 100 will be blown by the wind and rotate, rather than driving the hook 100 to rotate. Compared with the hook 100 rigidly connected to the lower part, the disturbance caused by the wind force transmitted from the rotatable connecting rod 300 or the drying frame 200 to the upper hook 100 is weaker, and thus the hook 100 rotatably connected to the lower part is less likely to be blown off the clothesline by the wind.

[0060] Example 5

[0061] On the basis of Example 1 or Example 3, preferably, an adapter 210 is rotatably installed at the center of the drying frame 200; the adapter 210 is provided with a second connecting portion 3102 at the top and a first connecting portion 3101 at the bottom.

[0062] In this embodiment, the drying frame 200 is provided with a first connecting portion 3101 through the adapter 210, so that the top and bottom of the drying frame 200 can be connected to the connecting rod 300, so that the drying frames on the clothes drying rack can be set as either one layer or multiple layers, thereby improving the utilization of space. At the same time, with the connection rod 300 units of different lengths, the distance between adjacent drying frames 200 can also be flexibly adjusted, so that different distances between drying frames 200 can be flexibly built for different clothes.

[0063] In this embodiment, the adapter 210 can rotate relative to the drying frame 200. After the clothes drying rack is assembled, the user can rotate the drying frame 200 at regular intervals to change the drying position of the clothes so that each piece of clothing can be exposed to sunlight, avoiding the problem of some clothes being left in the shade to dry and thus prolonging the drying time.

[0064] Example 6

[0065] Based on Example 5, preferably, the adapter 210 is a base shaft, and the drying frame 200 is provided with a through hole for the base shaft to pass through;

[0066] At least two elastic arms are evenly distributed around the outer circumference of the base shaft;

[0067] A limiting portion is provided on the base shaft above the elastic arm; and a distance between the elastic arm and the limiting portion is not less than the length of the through hole.

[0068] Since the adapter 210 and the drying frame 200 are rotatably connected, there is a clearance between the adapter 210 and the through hole, which causes a collision between the adapter 210 and the through hole during transportation, thereby damaging the surface of the adapter 210 and the through hole. On the one hand, it affects the smoothness of the rotation of the adapter 210 during use, and on the other hand, it also affects the life of the adapter 210 and the through hole.

[0069] In order to avoid collision between the adapter 210 and the through hole during transportation, in this embodiment, the adapter 210 and the drying frame 200 are designed to be connected in a snap-fit ​​manner.

[0070] During transportation, the adapter 210 and the drying frame 200 are placed separately to avoid collision between the adapter 210 and the drying frame 200. When using the clothes drying rack, the base shaft is inserted into the through hole from top to bottom. As the base shaft descends, the edge of the through hole and the elastic arm squeeze each other, causing the elastic arm to deform, and then the elastic arm is squeezed into the through hole. As the base shaft continues to move downward, the elastic arm moves downward along the inner wall of the through hole until the elastic arm completely leaves the inner wall of the through hole. At this time, the elastic arm unfolds to its original shape under the action of its own elasticity. At this time, the elastic arm is located below the drying frame 200 to prevent the base shaft from falling out of the drying frame 200 downward, and the limiting portion 2104 is located above the drying frame 200 to prevent the base shaft from falling out of the drying frame 200 upward.

[0071] Example 7

[0072] On the basis of Example 5, the adapter 210 is a base shaft, and the drying frame 200 is provided with a through hole for the base shaft to pass through. Figure 6 As shown;

[0073] The base shaft includes an upper base, an elastic deformation portion 2102 and a lower base connected in sequence;

[0074] At least two elastic deformation parts 2102 are provided, and the elastic deformation parts 2102 are evenly distributed around the circumference of the base shaft axis; the supporting protrusions 2105 are provided on the outer side of the elastic deformation parts 2102;

[0075] The limiting portion 2104 is provided at the bottom end of the upper base.

[0076] The elastic deformation portion 2102 is thick at the upper and lower ends and thin in the middle. The side facing the axis of the base shaft is an arcuate curved surface, and the side away from the axis of the base shaft is a part of the cylindrical surface. After all the elastic deformation portions 2102 are connected, a cylindrical surface with a hollow is formed. In this embodiment, the base shaft is provided with two symmetrical elastic deformation portions 2102, such as Figure 7 As shown, after the two elastic deformation parts 2102 are connected, a cylindrical appearance with an elliptical through hole in the middle is formed. The upper surface of the supporting protrusion 2105 is a plane, and the lower surface is an inclined surface that tilts from bottom to top and from inside to outside in the direction from the axis of the base shaft to the supporting protrusion 2105.

[0077] In this embodiment, the upper base is the first connecting part 3101, the bottom edge of the first connecting part 3101 exceeds the outer wall edge of the two symmetrical elastic deformation parts 2102 to form a limiting part 2104, that is, the limiting part 2104 is a step surface, and the lower base is the second connecting part 3102.

[0078] When the base shaft is inserted downward into the through hole, the upper edge of the through hole squeezes the inclined lower surface of the supporting protrusion 2105, causing the supporting protrusion 2105 to move toward the direction close to the axis of the base shaft, and then the supporting protrusion 2105 presses the elastic deformation part 2102 to deform toward the direction of the axis of the base shaft until the supporting protrusion 2105 no longer hinders the movement of the base shaft. As the base shaft moves downward, the limiting part 2104 gradually approaches the upper edge of the through hole until the limiting part 2104 abuts the top surface of the drying frame 200. At this time, the base shaft stops moving, and at this time the upper surface of the supporting protrusion 2105 leaves the lower edge of the through hole, and then the supporting protrusion 2105 no longer squeezes each other with the inner wall of the through hole. The elastic deformation part 2102 also returns to its original shape and pushes the supporting protrusion 2105 away from the axis of the base shaft, so that the supporting protrusion 2105 abuts the lower surface of the drying frame 200.

[0079] Unless otherwise specifically stated, the relative arrangement, numerical expression and numerical value of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that: similar reference numerals and letters represent similar items in the accompanying drawings below, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the accompanying drawings subsequently.

[0080] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0081] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0082] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0083] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A clothes drying rack, characterized in that: include: A hook (100) for hanging a drying frame (200); A drying frame (200) is provided with clips for fixing clothes to be dried; A connecting rod (300) having an adjustable length for adjusting the distance between the hook (100) and the drying frame (200); The hook (100) can be detachably connected to one end of the connecting rod (300) or the drying frame (200); The other end of the connecting rod (300) can be detachably connected to the drying frame (200).

2. The clothes drying rack according to claim 1, characterized in that: The connecting rod (300) is composed of at least one rod monomer (310), and a plurality of rod monomers (310) can be detachably connected end to end in sequence.

3. The clothes drying rack according to claim 2, characterized in that: The hook (100) is provided with a first connecting portion (3101); The drying frame (200) is provided with a second connecting portion (3102); The rod monomer (310) is provided with a first connecting portion (3101) at one end and a second connecting portion (3102) at the other end; The first connecting portion (3101) can be detachably connected to the second connecting portion (3102).

4. The clothes drying rack according to claim 3, characterized in that: One of the first connecting portion (3101) and the second connecting portion (3102) is a threaded hole, and the other is a threaded rod.

5. The clothes drying rack according to claim 3, characterized in that: The drying frame (200) is further provided with a first connecting portion (3101): Two upper and lower adjacent drying frames (200) can be connected into one body via a connecting rod (300).

6. The clothes drying rack according to claim 5, characterized in that: The first connecting portion (3101) includes a base; A connector is provided on the base, and the connector can be detachably connected to the second connecting portion (3102); The base is rotatably mounted on the hook (100), the drying frame (200) and the rod unit (310).

7. The clothes drying rack according to claim 3, characterized in that: An adapter (210) is rotatably mounted at the center of the drying frame (200); The adapter (210) is provided with a second connecting portion (3102) at the top end and a first connecting portion (3101) at the bottom end.

8. The clothes drying rack according to claim 7, characterized in that: The adapter (210) is a base shaft, and the drying frame (200) is provided with a through hole for the base shaft to pass through; At least two elastic arms are evenly distributed around the outer circumference of the base shaft; A limiting portion (2104) is provided on the base shaft above the elastic arm; The distance between the elastic arm and the limiting portion (2104) is not less than the length of the through hole.

9. The clothes drying rack according to claim 7, characterized in that: The adapter (210) is a base shaft, and the drying frame (200) is provided with a through hole for the base shaft to pass through; At least two supporting protrusions (2105) are evenly distributed around the outer circumference of the base shaft; A limiting portion (2104) is provided on the base shaft above the supporting protrusion (2105); The distance between the supporting protrusion (2105) and the limiting portion (2104) is not less than the length of the through hole.

10. The clothes drying rack according to claim 9, characterized in that: The base shaft comprises an upper base, an elastic deformation portion (2102) and a lower base connected in sequence; At least two elastic deformation parts (2102) are provided, and the elastic deformation parts (2102) are evenly distributed around the circumference with the axis of the base shaft as the center; The supporting protrusion (2105) is arranged on the outer side surface of the elastic deformation portion (2102); The limiting portion (2104) is provided at the bottom end of the upper base.

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