Dual-purpose shower tent

By designing a deformable dual-purpose shower tent, the problem of the single function of existing vehicle tents is solved, realizing the switching between a shower tent and a canopy to meet diverse usage needs.

CN224032319UActive Publication Date: 2026-03-24Q YIELD OUTDOOR GEAR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-19
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Existing vehicle-mounted tents with shower tents offer limited functionality and cannot meet the diverse needs of users.

Method used

Design a dual-purpose shower tent that can be transformed into both a shower tent and a canopy by rotating the outriggers and adjusting the ground supports, allowing for different ways of unfolding the tent fabric to meet various usage needs.

Benefits of technology

The tent's versatility has been improved, allowing it to be switched between a shower tent and a canopy as needed, meeting the diverse needs of users.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a dual-purpose shower tent which comprises a cross beam, tent cloth and a ground support, the cross beam extends left and right, the extending end of the cross beam is provided with a support arm, the support arm is provided with an inner end and an outer end, the inner end of the support arm is pivoted on the cross beam, so that the support arm can swing horizontally, the outer end of the support arm is close to or far away from the cross beam, and the top edge of the tent cloth is arranged along the cross beam and the support arm. The cross beam and the support arm are fixed; the tarpaulin can be overhung and unfolded, so that when the supporting arms swing to form an included angle with the cross beam and the left side edge and the right side edge of the tarpaulin are connected, the tarpaulin encloses an open-air shower space with an opening in the top end; and the ground support is used for supporting the lower part of the tarpaulin, so that the tarpaulin forms an awning for shielding the space below the tarpaulin. The shower tent has two change forms of a shower tent and a sky curtain, the forms can be changed according to the requirements of users, the shower tent can be used as the shower tent and can also be used as the sky curtain, the applicability is improved, and different use requirements of the users are met.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a car tent technical field, especially point to a dual -purpose shower tent. BACKGROUND

[0002] The existing shower tent assembled on the car tent can only bathe, the function is relatively single, the applicability is lower, cannot satisfy the use demand of the user. INVENTION CONTENTS

[0003] The utility model discloses a dual -purpose shower tent, has shower tent and tent two changes form, can change form according to the demand of the user.

[0004] To achieve the above -mentioned purpose, the solution of the utility model is:

[0005] A dual -purpose shower tent, including crossbeam, tent cloth and ground support, crossbeam extends left and right, and the end of crossbeam extension is provided with support arm, and the inner end of support arm is pivoted on crossbeam, so that support arm can horizontally swing, and the outer end of support arm is close to or away from crossbeam, and the top edge of tent cloth is along crossbeam and support arm setting, and is fixed with crossbeam and support arm, and the left and right side edges of tent cloth are connected when the left and right side edges of tent cloth are connected, so that tent cloth is set up into the open -air shower space of the top open, and ground support is used to prop up the lower part of tent cloth, so that tent cloth forms the tent of the space under tent cloth.

[0006] Further, the inner end of one support arm is pivoted on the left end or right end of crossbeam, the top edge of tent cloth is along crossbeam and support arm setting, and is fixed with crossbeam and support arm, and the side edge of tent cloth exceeds the outer end of support arm, and tent cloth can be hung and unfolded, so that the outer end of support arm is close to or away from crossbeam, and the left and right side edges of tent cloth are connected when the left and right side edges of tent cloth are connected, so that tent cloth is set up into the open -air shower space of the top open, and ground support is used to prop up the lower part of tent cloth, so that tent cloth forms the tent of the space under tent cloth.

[0007] Preferably, the support arm has two, and the two support arms are respectively arranged at the left and right ends of crossbeam, and the inner ends of the two support arms are respectively pivoted on the left and right ends of crossbeam, so that the two support arms can be horizontally swung, and the outer ends of the two support arms are close to or away from crossbeam, and tent cloth can be hung and unfolded, so that the left and right edges of tent cloth are connected when the left and right edges of tent cloth are connected, so that tent cloth is set up into the open -air shower space of the top open, and ground support is used to prop up the lower part of tent cloth, so that tent cloth forms the tent of the space under tent cloth.

[0008] Further, when the support arm swings away from crossbeam and is in a straight line with crossbeam, the ground support props up the lower part of tent cloth, so that tent cloth forms the tent of the space under tent cloth.

[0009] Preferably, the branch arm is pivoted to 90° with the crossbeam, and at least one side edge of the tarpaulin exceeds the outer end of the branch arm, the tarpaulin is hung and unfolded, and when the left and right side edges of the tarpaulin are connected, the tarpaulin is set to form a quadrilateral open-air shower space with the top end being open.

[0010] Optionally, both side edges of the tarpaulin are flush with the outer end of the branch arm, the tarpaulin is hung and unfolded, and when the left and right side edges of the tarpaulin are connected, the tarpaulin is set to form a triangular open-air shower space with the top end being open.

[0011] Further, the branch arm is hinged to the end of the crossbeam through an angle adjusting mechanism, and the angle adjusting mechanism is used to adjust and lock the angle between the branch arm and the crossbeam.

[0012] Further, the crossbeam is provided with a receiving groove extending along the length direction thereof, the branch arm is hinged to the end of the receiving groove extending direction, the branch arm can be pivoted into the receiving groove or out of the receiving groove, and the ground support can be placed into the receiving groove.

[0013] The utility model also provides a dual-purpose shower tent, including crossbeam, tarpaulin, ground support and crossbar, crossbeam extends left and right, the left and right ends of crossbeam extension are provided with one branch arm respectively, branch arm has inner end and outer end, the inner end of two branch arms is pivoted with the left and right two ends of crossbeam respectively, so that two branch arms can all be pivoted horizontally, the outer end of two branch arms is pivoted to be close to crossbeam or away from crossbeam; The top edge of the tarpaulin is arranged along the crossbeam and the branch arm, and is fixed with the crossbeam and the branch arm; The tarpaulin can be hung and unfolded, and at least one side edge of the tarpaulin exceeds the outer end of the branch arm, so that when the branch arm is pivoted to a certain angle with the crossbeam and the left and right side edges of the tarpaulin are connected, the tarpaulin is set to form a quadrilateral open-air shower space with the top end being open; The crossbar extends left and right, and the two ends thereof are respectively detachably connected to the outer ends of the two branch arms; the top of the portion of the tarpaulin exceeding the outer end of the branch arm is connected to the crossbar to limit the top of the portion of the tarpaulin exceeding the outer end of the branch arm from falling; and the ground support is used to support the lower part of the tarpaulin to form a canopy shielding the space below the tarpaulin.

[0014] Further, the top edge of the tarpaulin arranged along the branch arm is fixedly connected to the top of the branch arm, the tarpaulin on the two branch arms can be hung and unfolded from the opposite sides of the two branch arms to cover the opposite sides of the two branch arms respectively; the tarpaulin covering the opposite sides of the outer ends of the two branch arms is respectively provided with a first through hole, and the opposite sides of the outer ends of the two branch arms are respectively provided with a second through hole corresponding to the position of the first through hole, and the two ends of the crossbar are respectively inserted into the second through hole through the first through hole.

[0015] After the above scheme is adopted, the utility model has the beneficial effects of:

[0016] The utility model discloses a beam left and right extension, and the end of beam extension is provided with a support arm, the support arm has an inner end and an outer end, and the inner end of the support arm is pivoted on the beam to enable the support arm to horizontally swing, and the outer end of the support arm is close to or away from the beam, the top edge of the tarpaulin is arranged along the beam and the support arm and is fixed with the beam and the support arm, when using the shower tent, the tarpaulin is hung and unfolded to enable the support arm to swing to a certain angle with the beam, and the left and right sides of the tarpaulin are connected to enable the tarpaulin to form an open-top outdoor shower space, when using the awning, the ground support props up the lower part of the tarpaulin to enable the tarpaulin to form an awning to shield the space below the tarpaulin. Therefore, the utility model has two changeable forms of shower tent and awning, can change the form according to the requirement of the user, can be used as the shower tent and the awning, improves the applicability and satisfies the different use requirement of the user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model in shower tent use state;

[0018] Figure 2 It is the structural schematic diagram of the embodiment of the utility model with one support arm;

[0019] Figure 3 It is the structural schematic diagram of the embodiment of the utility model with two support arms;

[0020] Figure 4 It is another structural schematic diagram of the embodiment of the utility model with two support arms;

[0021] Figure 5 It is the schematic diagram of the two support arms of the utility model on the beam swing away and form a straight line with the beam;

[0022] Figure 6 It is the structural schematic diagram of the two support arms of the utility model swing towards and fold;

[0023] Figure 7 It is the awning structural schematic diagram of the two support arms, the beam, the tarpaulin and the ground support of the utility model;

[0024] Figure 8 It is the awning structural schematic diagram of one support arm, the beam, the tarpaulin and the ground support of the utility model;

[0025] Figure 9 It is the structural schematic diagram of another dual-purpose shower tent provided by the utility model;

[0026] Figure 10 It is the cooperation schematic diagram of the cross bar and the tarpaulin;

[0027] Figure 11 It is Figure 10 the enlarged view of A of the utility model.

[0028] Figure 12 This is a schematic diagram of the outrigger;

[0029] Figure 13 yes Figure 12 Enlarged view of part B;

[0030] Figure 14 It is a cross-sectional view of the outrigger and the tarpaulin in conjunction.

[0031] Label Explanation:

[0032] 10. Crossbeam; 11. Support arm; 111. Inner end; 112. Outer end; 1121. Second through hole; 113. Snap-fit ​​groove; 12. Angle adjustment mechanism; 20. Canopy; 21. First through hole; 22. Snap-fit ​​piece; 30. Ground support; 40. Crossbar; 41. Connector; 50. Plug. Detailed Implementation

[0033] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 8 As shown, this embodiment provides a dual-purpose shower tent, including a crossbeam 10, a canopy 20, and a ground support 30. The crossbeam 10 extends to the left and right, and a support arm 11 is provided at the extended end of the crossbeam 10. The support arm 11 has an inner end 111 and an outer end 112. The inner end 111 of the support arm 11 is pivotally connected to the crossbeam 10 so that the support arm 11 can swing horizontally, so that the outer end 112 of the support arm 11 is close to or away from the crossbeam 10. The top edge of the canopy 20 is provided along the crossbeam 10 and the support arm 11 and is fixed to the crossbeam 10 and the support arm 11. The canopy 20 can be suspended and unfolded so that when the support arm 11 swings to form an angle with the crossbeam 10 and the left and right sides of the canopy 20 are connected, the canopy 20 can be set up to form an open-air shower space with an open top. The ground support 30 is used to support the lower part of the canopy 20 so that the canopy 20 forms a canopy to cover the space below the canopy 20. Therefore, this utility model has two variant forms: a shower tent and a canopy. It can be changed according to the user's needs, and can be used as both a shower tent and a canopy, thus improving its applicability and meeting different user needs.

[0035] like Figure 2 , Figure 8As shown, in one embodiment, the support arm 11 has one inner end 111 pivotally connected to the left or right end of the crossbeam 10. The top edge of the tarpaulin 20 is provided along the crossbeam 10 and the support arm 11 and is fixed to the crossbeam 10 and the support arm 11. The side edge of the tarpaulin 20 extends beyond the outer end 112 of the support arm 11. The tarpaulin 20 can be suspended and unfolded so that when the support arm 11 swings to form an angle with the crossbeam 10 and the left and right sides of the tarpaulin 20 are connected, the tarpaulin 20 can be arranged to form a triangular open-air shower space with an open top. The ground support 30 is used to support the lower part of the tarpaulin 20 so that the tarpaulin 20 forms a canopy to cover the space below the tarpaulin 20. Optionally, the other side edge of the tarpaulin 20 can extend beyond the end of the crossbeam 10 where the support arm 11 is not provided, or it can be flush with the end of the crossbeam 10 where the support arm 11 is not provided.

[0036] like Figure 1 , Figure 3 , Figure 4 , Figure 7 As shown, in another preferred embodiment, there are two support arms 11, which are respectively disposed at the left and right ends of the crossbeam 10. The inner ends 111 of the two support arms 11 are pivotally connected to the left and right ends of the crossbeam 10, so that both support arms 11 can swing horizontally, so that the outer ends 112 of the two support arms 11 swing towards each other and close to the crossbeam 10 or swing away from each other and away from the crossbeam 10. The tarpaulin 20 can be suspended and unfolded so that when the two support arms 11 swing to form an angle with the crossbeam 10 and the left and right sides of the tarpaulin 20 are connected, the tarpaulin 20 can be set up to form an open-air shower space with an open top. The ground support 30 is used to support the lower part of the tarpaulin 20 so that the tarpaulin 20 forms a canopy to cover the space below the tarpaulin 20.

[0037] like Figure 7 , Figure 8 As shown, further, when the support arm 11 swings away from the crossbeam 10 and is in a straight line with the crossbeam 10, the ground support 30 supports the lower part of the tarpaulin 20 so that the tarpaulin 20 forms a canopy that covers the space below the tarpaulin 20. It can be understood that either one support arm 11 or two support arms 11 can be used, and the covering area of ​​the canopy formed by two support arms 11 is larger than the covering area of ​​the canopy formed by one support arm 11.

[0038] like Figure 3 As shown, preferably, when there are two support arms 11, the support arms 11 are rotated to form a 90° angle with the crossbeam 10, and at least one side of the tarpaulin 20 extends beyond the outer end 112 of the support arm 11. The tarpaulin 20 is suspended and unfolded, and when the left and right sides of the tarpaulin 20 are connected, the tarpaulin 20 is arranged to form a quadrilateral open-air shower space with an open top, and the shower space formed at this time is the most spacious; preferably, both sides of the tarpaulin 20 extend beyond the outer end 112 of the support arm 11.

[0039] like Figure 4As shown, optionally, both sides of the tarpaulin 20 are flush with the outer end 112 of the support arm 11, the tarpaulin 20 is hung and unfolded, and when the left and right sides of the tarpaulin 20 are connected, the tarpaulin 20 is surrounded to form a triangular open-air shower space with an open top.

[0040] It can be understood that the two sides of the tarpaulin 20 can be connected by a zipper, magic tape or other means when connected, which is not limited here.

[0041] Further, the support arm 11 is hinged to the end of the crossbeam 10 by the angle adjusting mechanism 12, which is used to adjust and lock the angle of the support arm 11 swinging with the crossbeam 10. Specifically, the angle adjusting mechanism 12 applies any angle adjusting mechanism 12 in the prior art to adjust and lock the angle of the support arm 11 with the crossbeam 10, which is not described here.

[0042] Further, the crossbeam 10 is provided with a receiving groove extending in the length direction thereof, the support arm 11 is hinged to the end of the receiving groove in the extension direction, the support arm 11 can swing into the receiving groove or out of the receiving groove, and the ground support 30 can be optionally placed into the receiving groove, and the receiving groove can also be used to place the tarpaulin 20, which is convenient for storage.

[0043] Further, the ground support 30 is a telescopic rod, and the bottom of the ground support 30 is provided with a ground nail, so that the ground support 30 can be inserted into the ground to ensure the stability of the support, and the height of the telescopic rod can be adjusted to adjust the height of the tent.

[0044] Further, the crossbeam 10 is used to be fixed on the car tent to meet the needs of users in outdoor use.

[0045] As Figures 9 to 14The utility model also provides a dual -purpose shower tent, including crossbeam 10, tent cloth 20, ground support 30 and cross rod 40, crossbeam 10 extends left and right, and crossbeam 10 extends left and right end respectively is provided with a supporting arm 11, supporting arm 11 has inner end 111 and outer end 112, and the inner end 111 of two supporting arms 11 is respectively pivotally connected with the left and right two ends of crossbeam 10, so that two supporting arms 11 can be horizontally swung, and the outer end 112 of two supporting arms 11 is swung to approach crossbeam 10 or swing away from crossbeam 10, the top edge of tent cloth 20 is along crossbeam 10 and supporting arm 11 setting, and is fixed with crossbeam 10 and supporting arm 11, tent cloth 20 can be suspended and unfolded, and at least one side of tent cloth 20 exceeds the outer end 112 of the supporting arm 11, so that when supporting arm 11 is swung to form an angle with crossbeam 10, and the left and right side edges of tent cloth 20 are connected, tent cloth 20 is formed into the quadrilateral open-air shower space of the open top, cross rod 40 extends left and right, and the two ends are respectively detachably connected with the outer end 112 of two supporting arms 11, and the top of the part of tent cloth 20 exceeding the outer end 112 of supporting arm 11 is connected with cross rod 40, to limit the top of the part of tent cloth 20 exceeding the outer end 112 of supporting arm 11 from falling, and ground support 30 is used to prop up the lower part of tent cloth 20, so that tent cloth 20 forms the awning of the space below tent cloth 20.

[0046] Specifically, the top end of the part of tent cloth 20 exceeding the outer end 112 of supporting arm 11 is provided with a connecting piece 41, the connecting piece 41 is used for connecting the top end of the part of tent cloth 20 exceeding the outer end 112 of supporting arm 11 and cross rod 40, the connecting piece 41 is preferably a cloth belt, a plurality of cloth belts are arranged at the top end of the part of tent cloth 20 exceeding the outer end 112 of supporting arm 11, and the cloth belt is tied on cross rod 40, so that the top end of the part of tent cloth 20 exceeding the outer end 112 of supporting arm 11 is connected with cross rod 40, thereby limiting the top of the part of tent cloth 20 exceeding the outer end 112 of supporting arm 11 from falling, to ensure the privacy of the formed quadrilateral open-air shower space, and it can be understood that the connecting piece 41 can also be magic tape, magnet, buckle, etc., which is not limited here.

[0047] Specifically, the top edge of tent cloth 20 arranged along supporting arm 11 is fixedly connected with the top of supporting arm 11, and the tent cloth 20 on the two supporting arms 11 can be suspended and unfolded from the opposite sides of the two supporting arms 11 to cover the opposite sides of the two supporting arms 11 respectively, the tent cloth 20 covering the opposite sides of the outer end 112 of the two supporting arms 11 is respectively provided with a first through hole 21, and a second through hole 1121 corresponding to the position of the first through hole 21 is respectively arranged on the opposite sides of the outer end 112 of the two supporting arms 11, and the two ends of cross rod 40 are respectively inserted into the second through hole 1121 through the first through hole 21.

[0048] Specifically, the top of each of the two arms 11 has a clamping groove 113 arranged along the length of the arm 11, and the top edge of the tarpaulin 20 arranged along the arm 11 is provided with a rod-shaped clamping piece 22, which is clamped in the clamping groove 113 to clamp and fix the top edge of the tarpaulin 20 arranged along the arm 11 at the top of the arm 11, and the tarpaulins 20 on the two arms are hung and unfolded from the opposite sides of the two arms 11 to cover the opposite sides of the two arms 11 respectively, and the outer end 112 of the arm 11 is further sleeved with a plug 50, which blocks the tarpaulin 20 to prevent the tarpaulin 20 from moving towards the outer end 112 of the arm 11.

[0049] The orientation terms mentioned in the present specification are defined with respect to the structure shown in the drawings, and are relative concepts, so it is possible to change accordingly according to different positions and different use states. Therefore, these or other orientation terms should not be interpreted as limiting terms.

[0050] The above is only the preferred embodiment of the present application, and is not a limitation on the design of the present application. Any equivalent changes made according to the key design of the present application shall fall within the scope of protection of the present application.

Claims

1. A dual purpose shower tent characterized in that: It includes a crossbeam, a tarpaulin, and a ground support. The crossbeam extends to the left and right, and the ends of the crossbeam are equipped with support arms. The support arms have inner and outer ends. The inner end of the support arm is pivotally connected to the crossbeam so that the support arm can swing horizontally and the outer end of the support arm can move closer to or away from the crossbeam. The top edge of the tarpaulin is set along the crossbeam and the support arms and is fixed to the crossbeam and the support arms. The tarpaulin can be suspended and unfolded so that when the outrigger swings to form an angle with the crossbeam and the left and right sides of the tarpaulin are connected, the tarpaulin can be used to enclose an open-air shower space with an open top. Ground supports are used to support the lower part of the tarpaulin so that the tarpaulin forms a canopy that covers the space below.

2. A dual purpose shower tent as claimed in claim 1 wherein: The outrigger has one arm, the inner end of which is pivotally connected to the left or right end of the crossbeam. The top edge of the tarpaulin is set along the crossbeam and the outrigger and is fixed to the crossbeam and the outrigger. The side edge of the tarpaulin extends beyond the outer end of the outrigger. The tarpaulin can be suspended and unfolded so that when the outrigger swings to form an angle with the crossbeam and the left and right sides of the tarpaulin are connected, the tarpaulin can be set up to form a triangular open-air shower space with an open top. Ground supports are used to support the lower part of the tarpaulin so that the tarpaulin forms a canopy that covers the space below.

3. A dual purpose shower tent as claimed in claim 1, wherein: There are two outriggers, which are respectively set at the left and right ends of the crossbeam. The inner ends of the two outriggers are pivotally connected to the left and right ends of the crossbeam, so that both outriggers can swing horizontally, and the outer ends of the two outriggers can swing towards each other and move closer to the crossbeam or away from the crossbeam. The tarpaulin can be suspended and unfolded so that when the two arms are swung to form an angle with the crossbeam and the left and right sides of the tarpaulin are connected, the tarpaulin can be used to create an open-air shower space with an open top. Ground supports are used to support the lower part of the tarpaulin so that the tarpaulin forms a canopy that covers the space below.

4. A dual purpose shower tent as claimed in any one of claims 1, 2 or 3 wherein: When the outrigger swings away from the crossbeam and is in a straight line with the crossbeam, the ground support lifts the lower part of the tarpaulin so that the tarpaulin forms a canopy that covers the space below the tarpaulin.

5. A dual purpose shower tent as claimed in claim 3 wherein: When the outrigger swings to a 90° angle with the crossbeam and at least one side of the tarpaulin extends beyond the outer end of the outrigger, the tarpaulin hangs down and unfolds, and the left and right sides of the tarpaulin are connected, the tarpaulin forms a quadrilateral open-air shower space with an open top.

6. A dual purpose shower tent as claimed in claim 3 wherein: Both sides of the tarpaulin are flush with the outer ends of the support arms. When the tarpaulin is suspended and unfolded, and the left and right sides of the tarpaulin are connected, the tarpaulin forms a triangular open-air shower space with an open top.

7. A dual purpose shower tent as claimed in any one of claims 1, 2 or 3 wherein: The outrigger is hinged to the end of the crossbeam extension via an angle adjustment mechanism, which is used to adjust and lock the angle between the outrigger and the crossbeam.

8. A dual purpose shower tent as claimed in claim 1 or 2 or 3 wherein: The crossbeam is provided with a receiving groove extending along its length, and the support arm is hinged to the end of the receiving groove in the extending direction. The support arm can be swung into or out of the receiving groove, and the ground support can be placed into the receiving groove.

9. A dual use shower tent characterized by: It includes a crossbeam, a tarpaulin, ground supports, and crossbars. The crossbeam extends to the left and right, and each of the left and right ends of the crossbeam is equipped with an arm. The arm has an inner end and an outer end. The inner ends of the two arms are pivotally connected to the left and right ends of the crossbeam, so that both arms can swing horizontally. The outer ends of the two arms can swing towards each other and close to the crossbeam or swing away from each other and away from the crossbeam. The top edge of the tarpaulin is set along the crossbeam and the arms and is fixed to the crossbeam and the arms. The tarpaulin can be hung and unfolded, and at least one side of the tarpaulin exceeds the outer end of the support arm, so that when the support arm is turned to a certain angle with the crossbeam and the left and right side edges of the tarpaulin are connected, the tarpaulin forms an open-top quadrilateral outdoor shower space; The crossbar extends left and right, and its two ends are respectively detachably connected to the outer ends of the two support arms. The top of the part of the tarpaulin exceeding the outer end of the support arm is connected to the crossbar to limit the falling of the top of the part of the tarpaulin exceeding the outer end of the support arm; The ground support is used to support the lower part of the tarpaulin, so that the tarpaulin forms a canopy that blocks the space below the tarpaulin.

10. A dual purpose shower tent as claimed in claim 9 wherein: The top edge of the tarpaulin arranged along the support arm is fixedly connected to the top of the support arm. The tarpaulin on the two support arms can be hung and unfolded from the opposite sides of the two support arms to cover the opposite sides of the two support arms, respectively. The tarpaulin covering the opposite sides of the outer ends of the two support arms is respectively provided with a first through hole, and the opposite sides of the outer ends of the two support arms are respectively provided with a second through hole corresponding to the position of the first through hole. The two ends of the crossbar are respectively inserted into the second through hole through the first through hole.