Foot tube telescoping structure and support frame

Abstract

The utility model relates to a kind of foot pipe telescopic structure and support frame, wherein foot pipe telescopic structure includes the first pipe fitting and the second pipe fitting slidingly connected along its axial direction, and forms telescopic structure to change the length size of foot pipe telescopic structure.The first pipe fitting is provided with sliding rail extending along its axial direction, and the second pipe fitting is provided with elastic member between the first pipe fitting, and the elastic member generates pre-tightening force perpendicular to the axial direction of the first pipe fitting, to keep foot pipe telescopic structure to any length telescopic.The support frame includes mounting seat and multiple foot pipe telescopic structures, the mounting seat is used to install shooting device, and multiple foot pipe telescopic structures are connected to the side of mounting seat and form support frame support body, to support shooting device on support surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to support technical field, especially a foot tube telescopic structure and support frame. BACKGROUND

[0002] With the continuous improvement of living standards, the team of photography enthusiasts is increasingly large, and support frames such as tripod heads are one of the essential tools for photography enthusiasts. The tripod head is used to fix the shooting device, avoid the user's hand or arm discomfort when holding the shooting device for a long time, and ensure the stability of the shooting device during shooting to obtain good shooting results. However, the tripod on the market can basically switch between the folded and unfolded states, and the unfolded state is supported on the support surface, and the folded state is used for the user to hold. In the unfolded state, the legs can also be extended by telescoping to change the shooting height, for example, the legs in Chinese patent CN221974921U are extended by a sliding rail, but an additional limiting structure is needed to fix the length of the legs, which is complex and time-consuming and laborious to operate. SUMMARY

[0003] The utility model provides a foot tube telescopic structure and support frame to solve the technical problem of complex leg telescopic structure and time-consuming and laborious operation in the traditional support.

[0004] First aspect

[0005] The utility model discloses a foot tube telescopic structure, which comprises:

[0006] A first pipe has a first end and a second end opposite along its axial direction, and a sliding rail is arranged between the first end and the second end of the first pipe, and the sliding rail extends along the axial direction of the first pipe;

[0007] A second pipe has a third end and a fourth end opposite along its axial direction, and the third end is slidably connected to the sliding rail along the length direction of the sliding rail to make the foot tube telescopic structure longer or shorter;

[0008] An elastic member is arranged between the first pipe and the second pipe, and the elastic member generates a pre-tightening force perpendicular to the axial direction of the first pipe to keep the foot tube telescopic structure telescoped to any length.

[0009] In one embodiment, the elastic member includes a spring piece fixedly connected to the third end and releasing a spring force against the inner side wall of the sliding rail, or the spring piece is fixedly connected to the end of the sliding rail and releases a spring force against the outer wall of the second pipe. When the third end moves to the end of the sliding rail, the foot tube telescopic structure reaches the maximum length.

[0010] In one of the embodiments, the elastic member comprises a protruding block protruding from the abutting side of the elastic sheet, and the protruding block can be pressed to cause the elastic sheet to elastically deform and accumulate elastic force.

[0011] In one of the embodiments, the inner side wall of the slide rail at the end thereof or the outer side wall of the second pipe at the third end is provided with a protruding first blocking surface, and the first blocking surface is located at the first pipe and the second pipe respectively, and when the third end moves to the end of the slide rail, the protruding block is hung on the first blocking surface to limit the third end from being separated from the slide rail.

[0012] In one of the embodiments, the slide rail is provided with a second blocking surface on the inner side wall thereof, the first blocking surface is located at the end of the slide rail, the second blocking surface is spaced from the first blocking surface along the extension direction of the slide rail, and the gap between the first blocking surface and the second blocking surface forms a limiting groove, and the protruding block is limited in the limiting groove.

[0013] In one of the embodiments, the protruding block is provided with an arc-shaped end surface away from the elastic sheet, the arc-shaped end surface is in an arch shape, the highest point of the arc-shaped end surface abuts against the inner side wall of the slide rail, the protruding block has an inclined surface facing the slide rail, the inclined surface is inclined to the thickness direction of the elastic sheet, and the inclined surface is connected between the side peripheral wall of the elastic sheet and the arc-shaped end surface.

[0014] In one of the embodiments, the third end is provided with a suspended groove and an avoiding notch in communication with the suspended groove, the elastic sheet is limited in the suspended groove and can move in the avoiding notch to accumulate or release elastic force, one end of the elastic sheet is suspended and can abut against the inner side wall of the slide rail after passing through the avoiding notch.

[0015] In one of the embodiments, opposite sides of the slide rail are provided with cold shoe grooves in communication with the slide rail, the length extension direction of the cold shoe groove is parallel to the length extension direction of the slide rail, and the third end is provided with cold shoe blocks at opposite sides in the radial direction thereof, and the cold shoe blocks are slidingly installed in the cold shoe grooves.

[0016] In one of the embodiments, the elastic member comprises an elastic pad attached to the outer side wall of the cold shoe block or the inner side wall of the cold shoe groove, and when the cold shoe block is installed in the cold shoe groove, the elastic pad is pressed to deform and is located between the cold shoe block and the cold shoe groove, and the elastic pad can release elastic force to further clench the cold shoe block and the cold shoe groove.

[0017] In a second aspect, the utility model discloses a support frame, comprising:

[0018] A mounting seat is used for mounting a shooting device.

[0019] The foot pipe telescopic structure as claimed in any one of the preceding embodiments, a plurality of the first ends and a plurality of the fourth ends are connected to the side periphery of the mounting base, one of which is connected to the side periphery of the mounting base and the other is away from each other to support on a support surface.

[0020] From the above technical solution, the embodiments of the present application have at least the following advantages and positive effects:

[0021] The embodiments of the present application provide a foot pipe telescopic structure and a support frame. The foot pipe telescopic structure includes a first pipe and a second pipe connected by sliding, forming a telescopic structure to change the length of the foot pipe telescopic structure. The first pipe is provided with a sliding rail extending in the axial direction thereof, and an elastic member is arranged between the first pipe and the second pipe. The elastic member generates a pre-tightening force perpendicular to the axial direction of the first pipe to maintain the foot pipe telescopic structure at any length. The foot pipe telescopic structure of the present application does not need to additionally set a limiting structure to fix the length of the foot pipe telescopic structure, and has the advantages of simple structure, easy operation and great practicability. The support frame composed of a plurality of foot pipe telescopic structures and a mounting base supports the shooting device stably, and the support height of the support frame can be easily adjusted according to the foot pipe telescopic structure, and the shooting direction can be flexibly adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor.

[0023] Figure 1 It is a whole structure schematic view of the foot pipe telescopic structure of an embodiment of the present application.

[0024] Figure 2 It is an exploded structure schematic view of the foot pipe telescopic structure shown in Figure 1

[0025] Figure 3 It is another view of the exploded view shown in Figure 2

[0026] Figure 4 It is an exploded structure schematic view in the direction of A-A in Figure 1

[0027] Figure 5 It is an enlarged schematic view of A in the exploded view shown in Figure 3

[0028] Figure 6 ​​​​Figure 1 is a schematic view of an unfolded structure of a support frame according to an embodiment of the present application;

[0029] Figure 7 Figure 1 is a schematic view of an unfolded structure of a support frame according to an embodiment of the present application; Figure 6 Figure 2 is a schematic view of a folded structure of the support frame shown in Figure 1.

[0030] The reference signs are explained as follows:

[0031] 1, support frame; 10, telescopic structure of leg pipe; 100, first pipe; 110, first end; 120, second end; 130, slide rail; 140, first blocking surface; 150, second blocking surface; 160, limiting groove; 170, cold shoe groove; 200, second pipe; 210, third end; 220, fourth end; 230, overhanging groove; 240, avoiding gap; 250, cold shoe block; 300, elastic member; 310, elastic sheet; 320, protruding block; 321, arc-shaped end surface; 322, inclined surface; 330, elastic pad; 20, mounting base. DETAILED DESCRIPTION

[0032] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can be implemented in various manners, and all the changes and modifications thereof do not deviate from the scope of the present application, and the description and drawings in the specification are used as an illustration rather than a limitation of the present application.

[0033] In addition, the terms "first" and "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0034] In the description of the present application, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "setting", and "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In combination with reference Figure 1 and Figure 2The application provides a novel foot pipe telescopic structure 10, which comprises a first pipe 100, a second pipe 200 and an elastic member 300. The first pipe 100 and the second pipe 200 are connected in an axial sliding mode to form a telescopic structure for changing the length of the foot pipe telescopic structure 10. The elastic member 300 is used to automatically generate a pre-tightening force to keep the foot pipe telescopic structure 10 telescoped to any length. It should be noted that the length of the foot pipe telescopic structure 10 refers to the total axial size of the first pipe 100 and the second pipe 200 after being connected. Then the first pipe 100 and the second pipe 200 refer to any two adjacent and axially connected pipes, which have the adjacent opposite property. The foot pipe telescopic structure 10 herein comprises at least two pipes (the first pipe 100 and the second pipe 200), i.e., the number of pipes is not limited and can be three or more.

[0036] Specifically, in combination with reference to Figure 2 and Figure 3 , the first pipe 100 has a first end 110 and a second end 120 opposite along the axial direction thereof. The first pipe 100 is provided with a sliding rail 130 between the first end 110 and the second end 120, which extends along the axial direction of the first pipe 100. The second pipe 200 has a third end 210 and a fourth end 220 opposite. The third end 210 is connected to the sliding rail 130 in a sliding mode along the length direction of the sliding rail 130. The third end 210 can move reciprocally along the sliding rail 130 to make the foot pipe telescopic structure 10 lengthen or shorten to change the length. The elastic member 300 is arranged between the first pipe 100 and the second pipe 200. The elastic member 300 generates a pre-tightening force perpendicular to the axial direction of the first pipe 100, which acts as a sliding damping to prevent the movement of the third end 210 in the sliding rail 130, so as to keep the foot pipe telescopic structure 10 telescoped to any length.

[0037] Preferably, in an embodiment, in combination with reference to Figure 2 and Figure 3 , the elastic member 300 comprises an elastic sheet 310, which is fixedly connected to the third end 210 and releases a spring force to abut against the inner side wall of the sliding rail 130. Alternatively, in other embodiments, the elastic sheet 310 is fixedly connected to the end of the sliding rail 130 and releases a spring force to abut against the outer wall of the second pipe. When the third end 210 moves to the end of the sliding rail 130, the first pipe 100 and the second pipe 200 are connected end to end, and the foot pipe telescopic structure 10 reaches the maximum length. It should be noted that the elastic sheet is only a specific structural mode for realizing elastic deformation. In other embodiments, it can be other structures capable of elastic deformation, such as elastic plastic, telescopic spring, etc. Therefore, in the application, any elastic structure capable of releasing a spring force perpendicular to the axial direction of the second pipe 200 should be protected.

[0038] Preferably, in an embodiment, in combination with reference toFigure 2 and Figure 3 The elastic member 300 includes a protruding block 320 protruding from the abutting side of the elastic sheet 310, which is located between the elastic sheet 310 and the slide rail 130, and can be pressed to accumulate elastic force by elastic deformation of the elastic sheet 310. It should be noted that in other embodiments, the length extension direction of the elastic sheet 310 is inclined to the outer wall of the second pipe 200 or the inner side wall of the slide rail 130, the end of the elastic sheet 310 protrudes to form the protruding block 320 corresponding to the connecting wall surface, and the end of the elastic sheet 310 is pressed by the wall surface to accumulate elastic force, or the thickness dimension of the elastic sheet 310 gradually changes along the length direction of the slide rail 130 and can be pressed by the inner side wall of the slide rail 130 to accumulate elastic force, so in this application, the protruding block 320 is not separately provided or whether the protruding block 320 is provided is not limited.

[0039] Preferably, in an embodiment, in combination with reference to Figures 2-4 The end surface of the protruding block 320 away from the elastic sheet 310 is provided with an arc-shaped end surface 321, which is in an arch shape, and the highest point of the arc-shaped end surface 321 abuts against the inner side wall of the slide rail 130. Further, the protruding block 320 has a slope 322 facing the slide rail 130, which is inclined to the thickness direction of the elastic sheet 310, and is connected between the side peripheral wall of the elastic sheet 310 and the arc-shaped end surface 321. Here, the arc-shaped end surface 321 or the slope 322 is used to reduce the contact surface size of the protruding block 320 and the inner side wall of the slide rail 130 on the one hand, to reduce the sliding damping, to improve the extension fluency of the entire foot pipe extension structure 10, and on the other hand, to enhance the stability of the third end 210 slidingly connected in the slide rail 130. It should be understood that without considering the extension fluency or connection stability of the entire foot pipe extension structure 10, in this application, whether the arc-shaped end surface 321 or the slope 322 is provided is not limited.

[0040] Preferably, in an embodiment, in combination with reference to Figure 2 and Figure 3 The inner side wall of the slide rail 130 at the end or the outer side wall of the second pipe 200 at the third end 210 is provided with a protruding first blocking surface 140, and the first blocking surface 140 and the protruding block 320 are located in the first pipe 100 and the second pipe 200, respectively. When the third end 210 moves to the end of the slide rail 130, the protruding block 320 is hung on the first blocking surface 140 to limit the third end 210 from disengaging from the slide rail 130, preventing the first pipe 100 and the second pipe 200 from being separated along the axial direction thereof. It should be noted that the hanging cooperation of the protruding block 320 and the first blocking surface 140 is a specific limiting structure, and in this application, as long as the limiting structure can limit the third end 210 from disengaging from the end of the slide rail 130, it should be protected, so whether the first blocking surface 140 is provided is not limited.

[0041] Preferably, in an embodiment, referring to Figures 2-4 The second blocking surface 150 is arranged on the inner side wall of the end of the slide rail 130, and the first blocking surface 140 is arranged on the inner side wall of the end of the slide rail 130. The second blocking surface 150 is arranged in the extension direction of the slide rail 130 and is spaced apart from the first blocking surface 140, and the gap between the two forms a limiting groove 160. The protruding block 320 is limited in the limiting groove 160 to limit the movement of the protruding block 320 in the length direction of the slide rail 130. The first blocking surface 140 and the second blocking surface 150 simultaneously limit the sliding movement of the protruding block 320 in two opposite directions to enhance the stability of the telescopic foot pipe structure 10 in the maximum length position and prevent loose telescoping. Here, the second blocking surface 150 can be formed on the side wall where the elastic rib is arranged. The second blocking surface 150 is inclined to the extension direction of the slide rail to facilitate user operation of telescoping the foot pipe structure 10. It should be noted that in the present application, as long as the limiting structure that can limit the third end 210 from leaving the end of the slide rail 130 is protected, the arrangement of the second blocking surface 150 is not limited.

[0042] Preferably, in an embodiment, referring to Figure 2 and Figure 3 The third end 210 is provided with a suspended groove 230 and an avoidance notch 240 communicating with the suspended groove 230. The elastic sheet 310 is limited in the suspended groove 230 and can move in the avoidance notch 240 to accumulate or release elastic force. One end of the elastic sheet 310 is suspended and can pass through the avoidance notch to abut against the inner side wall of the slide rail 130. Here, the elastic sheet 310 is connected to the second pipe 200. In other embodiments, the elastic sheet 310 can be connected to the first pipe 100, and at this time, the suspended groove 230 and the avoidance notch 240 are arranged on the inner side of the end of the slide rail 130. It should be noted that the connection position of the elastic sheet 310 is not limited. The suspended groove 230 and the avoidance notch 240 provide a moving space for the elastic sheet 310 to elastically deform. In other embodiments, the elastic sheet 310 protruding from the corresponding wall can also be pressed to elastically deform (as described above), and at this time, the suspended groove 230 and the avoidance notch 240 do not need to be arranged. Therefore, in the present application, the arrangement of the suspended groove 230 and the avoidance notch 240 is not limited.

[0043] Preferably, in an embodiment, referring to Figure 2 and Figure 3The opposite sides of the slide rail 130 are provided with cold shoe grooves 170 in communication with the slide rail 130, the length extension direction of the cold shoe groove 170 is parallel to the length extension direction of the slide rail 130, the opposite sides of the third end 210 along the radial direction are provided with cold shoe blocks 250, and the cold shoe blocks 250 are slidingly installed in the cold shoe groove 170. It should be noted that, first, the cold shoe groove 170 and the cold shoe block 250 cooperate to achieve a specific way of sliding connection, and the setting positions of the two can be exchanged; on the other hand, the sliding connection of the cold shoe groove 170 and the cold shoe block 250 further improves the extension smoothness and structural compactness of the foot pipe extension structure 10. Therefore, in the present application, without considering the extension smoothness or structural compactness of the foot pipe extension structure 10, whether the cold shoe groove 170 and the cold shoe block 250 are provided or not is not limited.

[0044] Preferably, in an embodiment, referring to Figure 2 or Figure 3 The elastic member 300 includes an elastic pad 330 attached to the outer side wall of the cold shoe block 250 or the inner side wall of the cold shoe groove 170. When the cold shoe block 250 is slidingly installed in the cold shoe groove 170, the elastic pad 330 is extruded and deformed and located between the cold shoe block 250 and the cold shoe groove 170. The elastic pad 330 can release elastic force to further clamp the cold shoe block 250 and the cold shoe groove 170, thereby further improving the stability of the foot pipe extension structure 10 extending to any length position. It should be noted that, without considering the stability of the foot pipe extension structure 10 extending to any length position, in the present application, whether the elastic pad 330 is provided or not is not limited.

[0045] In a second aspect, referring to Figure 5 The present application also provides a support frame 1, which includes a mounting seat 20 and a plurality of foot pipe extension structures 10. The mounting seat 20 is used to mount a shooting device. The plurality of foot pipe extension structures 10 are connected to the side periphery of the mounting seat 20 as legs and form a support frame support body. One of the plurality of first ends 110 and the plurality of fourth ends 220 is connected to the mounting seat 20, and the other is away from each other to support on a support surface. Here, the mounting seat 20 can indirectly mount the shooting device through a pan-tilt device with a threaded interface and a dovetail structure. The mounting seat 20 can also directly mount the shooting device through a quick mount seat, threaded connection, buckle connection, locking shaft, etc.

[0046] Preferably, in an embodiment, in combination with reference to Figure 5 and Figure 6 One end (one of the first end 110 and the fourth end 220) of the plurality of foot pipe extension structures 10 is rotationally connected to the side periphery of the mounting seat 20, so that the support frame 1 can be switched between an unfolded state and a folded state. Figure 5 It is shown that in the unfolded state, the plurality of foot pipe extension structures 10 are in a support frame support posture; Figure 6It is shown that in the storage state, the plurality of foot pipe telescopic structures 10 are in a side-by-side closing posture. It should be noted that in the present application, whether the support frame 1 can be stored is not limited.

[0047] The foot pipe telescopic structure 10 provided by the present application maintains the foot pipe telescopic structure 10 to be telescoped to any length by the pre-tightening force provided by the elastic member 300, without the need to additionally set a limiting structure to fix the length of the foot pipe telescopic structure 10, and the structure is simple and easy to operate, and has great practicability. The support frame 1 composed of the plurality of foot pipe telescopic structures 10 and the mounting seat 20 supports the shooting equipment stably, and the support height of the support frame is conveniently adjusted according to the foot pipe telescopic structure 10, and the shooting direction is flexibly adjusted. On the other hand, the foot pipe telescopic structure 10 of the present application, in the connection limiting structure design of the first pipe member 100 and the second pipe member 200, the structure is compact and ingenious, which not only maintains the telescoping smoothness of the foot pipe telescopic structure 10, but also maintains the stability of the foot pipe telescopic structure 10 telescoped to any length position, and has great practicability.

[0048] Although the present application has been described with reference to several exemplary embodiments, it should be understood that the terms used are terms of description and illustration and not of limitation. Since the present application can be embodied in various forms without departing from the spirit or essential characteristics thereof, it should be understood that the above-described embodiments are not limited to any of the aforementioned details, but are to be construed broadly within the spirit and scope of the appended claims, and all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds, are to be embraced by the claims.

Claims

1. A foot tube telescoping structure, characterized by, The utility model relates to a telescopic tube structure, comprising: a first tube having a first end and a second end axially opposite to each other, the first tube being provided with a slide rail between the first end and the second end, the slide rail extending along the axial direction of the first tube; a second tube having a third end and a fourth end axially opposite to each other, the third end being slidably connected to the slide rail along the length direction of the slide rail to extend or shorten the telescopic tube structure; a resilient member arranged between the first tube and the second tube, the resilient member generating a pre-tightening force perpendicular to the axial direction of the first tube to keep the telescopic tube structure extended to any length.

2. The foot tube expansion structure according to claim 1, wherein The resilient member comprises a resilient piece fixedly connected to the third end and releasing elastic force to abut against the inner side wall of the slide rail; or the resilient piece is fixedly connected to the end of the slide rail and releases elastic force to abut against the outer wall of the second tube; wherein when the third end moves to the end of the slide rail, the telescopic tube structure reaches the maximum length.

3. The foot tube expansion structure according to claim 2, wherein The resilient member comprises a protruding block protruding from the abutting side of the resilient piece, the protruding block being capable of being pressed to cause the resilient piece to elastically deform and accumulate elastic force.

4. The foot tube expansion structure according to claim 3, wherein The inner side wall of the end of the slide rail or the outer side wall of the third end of the second tube is provided with a protruding first blocking surface, the first blocking surface being located in the first tube and the second tube with the resilient piece respectively, when the third end moves to the end of the slide rail, the protruding block is hung on the first blocking surface to limit the third end from being separated from the slide rail.

5. The foot tube expansion structure according to claim 4, wherein The inner side wall of the slide rail is provided with a second blocking surface, the first blocking surface being located at the end of the slide rail, the second blocking surface being spaced from the first blocking surface along the extension direction of the slide rail, and the gap between the first blocking surface and the second blocking surface forming a limiting groove, the protruding block being limited in the limiting groove.

6. The foot tube expansion structure according to claim 3, wherein The side of the protruding block away from the resilient piece is provided with an arc-shaped end surface, the arc-shaped end surface being in the shape of an arch, the highest point of the arc-shaped end surface abutting against the inner side wall of the slide rail; the protruding block has an inclined surface towards the slide rail, the inclined surface being inclined to the thickness direction of the resilient piece, and the inclined surface being connected between the side peripheral wall of the resilient piece and the arc-shaped end surface.

7. The foot tube expansion structure according to claim 2, wherein The third end is provided with a suspended groove and an avoiding notch in communication with the suspended groove, the resilient piece being limited in the suspended groove and being capable of moving in the avoiding notch to accumulate or release elastic force, one end of the resilient piece being suspended and being capable of abutting against the inner side wall of the slide rail after passing through the avoiding notch.

8. The foot tube extension structure according to any one of claims 1 to 7, characterized by, The opposite sides of the slide rail are provided with cold shoe grooves in communication with the slide rail, the length extension direction of the cold shoe groove being parallel to the length extension direction of the slide rail, the third end being provided with cold shoe blocks on the opposite sides in the radial direction, the cold shoe blocks being slidably installed in the cold shoe grooves.

9. The foot tube expansion structure according to claim 8, wherein, The resilient member comprises a resilient pad attached to the outer side wall of the cold shoe block or the inner side wall of the cold shoe groove, when the cold shoe block is installed in the cold shoe groove, the resilient pad is pressed to deform and is located between the cold shoe block and the cold shoe groove, the resilient pad being capable of releasing elastic force to further clench the cold shoe block and the cold shoe groove.

10. A support frame, characterized by The utility model relates to a telescopic tube structure, comprising: A mounting base for mounting a photographing device; A plurality of the telescopic structures of the foot tubes as claimed in claims 1-9 are connected to the side periphery of the mounting base and form a support body, one of the plurality of the first ends and the plurality of the fourth ends is connected to the side periphery of the mounting base, and the other is away from each other to be supported on a support surface.

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