Support assembly

Abstract

This provides a support assembly that is easy to unfold and fold, and offers high structural stability. [Solution] The support assembly according to the present invention includes a support transverse rod and connecting seats provided at both ends of the support transverse rod, the upper support rod being rotatably connected to the connecting seats, the lower support leg being rotatably connected to the upper support rod, the upper support rod and the lower support leg being able to rotate in the same plane so that the support assembly can be switched between a folded state and an unfolded state, a locking push button being movably provided on the lower support leg, the locking push button being provided with a first locking part, and the connecting seat being provided with a second locking part, the locking push button being able to slide from an unlocked position to a locked position, and when the locking push button is in the locked position, the first locking part and the second locking part are able to abut and engage so as to restrict the separation rotation of the lower support leg and the connecting seat, thereby holding the support assembly in the unfolded state.

Description

Technical Field

[0001] This application relates to the technical field of folding beds, and specifically to a support assembly.

Background Art

[0002] A folding bed is a simple bed designed using the principle of joints. For convenience and space saving, it can be folded and stored in various folding methods. Due to the advantages such as convenient use and easy portability of the folding bed, in outings or outdoor activities, the folding bed can generally play a huge role. When people go camping and collect the outdoor scenery, they can bring a folding bed, and thus can enjoy a comfortable home experience using the smallest space. Also, due to the advantage that the folding bed can be deployed and stored, when it is necessary to transport or store the folding bed, by folding the folding bed, the volume of the folding bed can be effectively reduced, and the space occupied by the folding bed can be reduced, which is convenient for the user to carry and store. However, the structures of the folding frames of conventional folding beds are all relatively complex. When deploying or folding the folding frame, it is necessary to rotate multiple rods in sequence, and the deployment and folding operations are complex and cumbersome. Moreover, the stability of the folding frame after deployment is low, and shaking is likely to occur during the use of the folding bed.

Summary of the Invention

Problems to be Solved by the Invention

[0003] One object of this application is to provide a support assembly that is convenient to deploy and fold and has high structural stability.

Means for Solving the Problems

[0004] To achieve the above objective, the technical means relating to the present invention is as follows: The support assembly includes a support transverse rod and connecting seats provided at both ends of the support transverse rod, the connecting seats to which the upper support rod is rotatably connected, the upper support rod is rotatably connected to the upper support rod, the upper support rod and the lower support leg rotate in the same plane so that the support assembly can be switched between a folded state and an unfolded state, the lower support leg is movably provided with a locking push button, the locking push button is provided with a first locking part, the connecting seat is provided with a second locking part, the locking push button is operable to slide from an unlocked position to a locked position, and when the locking push button is in the locked position, the first locking part and the second locking part abut and engage so as to restrict the independent rotation of the lower support leg and the connecting seat, thereby holding the support assembly in the unfolded state.

[0005] Preferably, the first locking portion includes an extending member and a stopper member, the extending member being provided perpendicularly to the back of the locking push button, the stopper member being provided at the end of the extending member and having a first locking plane, the second locking portion having a housing cavity, the second locking portion having a second locking plane, the locking push button drives the stopper member to slide into the housing cavity, and restricts the separation rotation of the lower support leg and the connecting seat by bringing the first locking plane and the second locking plane into contact with each other and engaging them.

[0006] Preferably, a return member is provided between the lock push button and the lower support leg, and the return member continuously applies a force to the lock push button to move it to the locked position so that the lock push button can move to the locked position after the external force acting on the lock push button is removed.

[0007] More preferably, the upper support rod includes a hinge connection end and a mounting end, the hinge connection end being rotatably connected to the connection seat, the mounting end being detachably connected to the bed cross assembly, the top of the lower support leg being rotatably connected to the middle of the upper support rod, the lower support leg being operable to drive the upper support rod to rotate and fold or to rotate and extend, and when both the upper support rod and the lower support leg are rotated to their maximum extended positions, the support transverse rod, the upper support rod and the lower support leg form a triangular structure.

[0008] Furthermore, a support groove is provided at the mounting end, and the bed cloth assembly is secured within the support groove so as to be removably connected to the mounting end.

[0009] Furthermore, the connecting seat includes a first connecting portion that connects to the support lateral rod and a second connecting portion that connects to the upper support rod, the second connecting portion including two base side walls and a position limiting wall connected between the two base side walls, the two base side walls together with the position limiting wall forming a hinge connection groove, a hinge connection rod provided in the hinge connection groove, the upper support rod being connected to the hinge connection rod so as to be rotatably provided in the hinge connection groove via the hinge connection end, and the position limiting wall bringing the upper support rod and the lower support leg into contact so as to limit the maximum extended position of the upper support rod and the lower support leg.

[0010] Furthermore, the lower support leg includes a bottom support rod and two side support rods, the top ends of the two side support rods are hinged to the middle of the upper support rod, the bottom ends of the two side support rods are fixedly connected to the left and right ends of the bottom support rod, respectively, and the two side support rods are inclined so that the entire lower support leg forms a triangular shape.

[0011] Furthermore, the side support rod includes a connecting segment adjacent to the upper support rod and a support segment spaced apart from the upper support rod, the support segment being inclined with respect to the connecting segment, and an obtuse angle being formed between the support segment and the connecting segment.

[0012] Furthermore, the angle of the included angle is between 155° and 175°.

[0013] Furthermore, as the position limiting wall extends vertically and the upper support rod abuts against the upper end of the position limiting wall, the upper support rods at both ends of the support horizontal rod are provided at an outward inclination, and the support horizontal rod and the upper support rods located at both ends of the support horizontal rod form a trapezoidal structure that widens at the top and narrows at the bottom. As the connecting segment abuts against the side end of the position limiting wall, the connecting segment extends vertically, and the support horizontal rod and the support segments at both ends of the support horizontal rod form a trapezoidal structure that narrows at the top and widens at the bottom. [Effects of the Invention]

[0014] Compared to the prior art, the beneficial effects of this invention are as follows:

[0015] In the support assembly of this invention, the lower support leg is provided with a locking push button, the locking push button is provided with a first locking part, and the connecting seat is provided with a second locking part. When both the upper support rod and the lower support leg are rotated to their maximum extended positions and the support assembly is in the extended state, the first locking part and the second locking part are locked and engaged in such a way that the separation rotation of the lower support leg and the connecting seat is restricted, thereby holding the support assembly in the extended state. The lower support leg can be used simultaneously as an extended "operating handle" and a "support structure" for support. This simplifies the support assembly structure and simplifies the operation of the user to extend and fold the support assembly. At the same time, in the extended support assembly, the support lateral rod, upper support rod and lower support leg form a triangular structure, improving the support stability and structural strength of the support assembly. This prevents situations such as shaking and breakage from occurring during the process in which the support assembly supports the bed cloth assembly, thus avoiding safety accidents. [Brief explanation of the drawing]

[0016] [Figure 1] This is a schematic perspective view of the support assembly in the unfolded state. [Figure 2] This is a schematic perspective view of the support assembly of the present invention when it is in a folded state. [Figure 3] This is a front view of the support assembly of the present invention in its unfolded state. [Figure 4] This is a schematic perspective view of the connection seat in the support assembly of the present invention. [Figure 5] This is a schematic perspective view of the upper support rod in the support assembly of the present invention. [Figure 6] This is a schematic diagram of the engagement relationship between the lower support leg and the locking push button in the support assembly of the present invention. [Figure 7] This is a schematic exploded view of the lower support leg, lock push button, and return member in the support assembly of the present invention. [Figure 8] This is a schematic perspective view of the lock push button in the support assembly of the present invention. [Figure 9] It is a schematic cross-sectional perspective view of the lower support leg, lock push button, and return member in the support assembly of the present application. [Figure 10] It is a schematic cross-sectional view of the support assembly of the present application. [Figure 11] It is a partial enlarged schematic view of part A in FIG. 10. [Figure 12] It is a schematic perspective view of a folding bed formed by combining the support assembly of the present application and the bed cross assembly.

Embodiments for Carrying Out the Invention

[0017] Hereinafter, the present application will be further described with reference to specific embodiments. It should be noted that on the premise of no contradiction, new embodiments can be formed by arbitrarily combining the following embodiments or technical features with each other.

[0018] In the description of the present application, regarding the orientation terms, the orientation and positional relationships indicated by terms such as "center", "lateral direction", "vertical direction", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are only for facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated device or component must have a specific orientation and be configured and operate in a specific orientation. Therefore, it should not be understood that it limits the specific protection scope of the present application.

[0019] In addition, the terms "first", "second", etc. in the specification and claims of the present application are for distinguishing similar objects and do not necessarily explain a specific order or priority.

[0020] The terms “including” and “having” in the specification and claims of this application, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or apparatus comprising a series of steps or units, is not limited to the steps or units expressly indicated, and may include other steps or units that are not expressly indicated or are specific to these processes, methods, products or apparatus.

[0021] As shown in Figures 1-12, the support assembly according to the present invention is used in combination with a bed cross assembly 700 to attach a folding bed. The support assembly includes a support transverse rod 100 and connecting seats 200 provided at both ends of the support transverse rod 100, to which an upper support rod 300 is rotatably connected, and to which a lower support leg 400 is rotatably connected. The upper support rod 300 and the lower support leg 400 rotate in the same plane to approach or rotate away from the support transverse rod 100 so that the support assembly can be switched between a folded state and an unfolded state, and a locking push button 500 is movably provided on the lower support leg 400. The lock push button 500 is operated to slide between a locked position and an unlocked position. A first locking part 510 is provided on the back of the lock push button 500, and a second locking part 210 is provided on the connecting seat 200. The first locking part 510 locks into the second locking part 210 to lock the rotation of the lower support leg 400, preventing the support assembly from being switched from the deployed state to the folded state by the lower support leg 400 separating from the connecting seat 200 and rotating to approach the support lateral rod 100. The bedcloth assembly 700 includes two bedcloth support rods 710 and a bedcloth 720 connected between the two bedcloth support rods 710, the bedcloth support rods 710 being detachably attached to the upper support rods 300, and further, when the support assembly is in the deployed state, the upper support rods 300 at both ends of the support transverse rod 100 spread the bedcloth 720 by separating from each other in order to pull the two bedcloth support rods 710 apart.

[0022] Specifically, as shown in Figure 1, when the support assembly is in the deployed state, both the upper support rod 300 and the lower support legs 400 rotate to separate from the support horizontal rod 100 to the maximum deployed position. The two upper support rods 300 at both ends of the support horizontal rod 100 are angled outward to spread the bed cloth assembly 700, and the two lower support legs 400 at both ends of the support horizontal rod 100 are in contact with the mounting plane. The first locking part 510 on the locking push button 500 locks into the second locking part 210 on the connecting seat 200, restricting the rotation of the lower support legs 400 and stably holding the support assembly in the deployed state, thus preventing the bed cloth 720 from folding. As shown in Figure 2, when the support assembly is in the folded state, both the upper support rod 300 and the lower support legs 400 are close to and in close contact with the upper part of the support horizontal rod 100.

[0023] Furthermore, the connecting seat 200 includes a first connecting portion 220 and a second connecting portion 230, the second connecting portion 230 being located above the first connecting portion 220, the end of the support transverse rod 100 being fixedly connected to the first connecting portion 220, one end of the upper support rod 300 being rotatably connected to the second connecting portion 230, the other end of the upper support rod 300 being detachably connected to the bed cross support rod 710, the top of the lower support leg 400 being rotatably connected to the upper support rod 300, the user can operate the lower support leg 400 to rotate and extend or rotate and fold the upper support rod 300 together, when the upper support rod 300 and lower support leg 400 are rotated to the maximum extended position, The first locking part 510 on the push button 500 engages with the second locking part 210 on the connecting seat 200 to lock the support assembly in the deployed state, and the bottom of the lower support leg 400 contacts the mounting plane to support the upper support rod 300, the support lateral rod 100 and the bed cloth assembly 700. In other words, the lower support leg 400 can simultaneously function as an "operating handle" for deploying and folding the support assembly and as a "support structure" for supporting the support assembly. This simplifies the support assembly structure and simplifies the user's operation of deploying or folding the support assembly, making the deployment and folding of the support assembly more labor-saving and faster for the user.

[0024] In some preferred embodiments, as shown in Figures 3-7, the first connecting portion 220 extends horizontally, and the second connecting portion 230 extends vertically. The second connecting portion 230 is integrally molded above the first connecting portion 220 and positioned vertically, so that the connecting seat 200 as a whole forms an L-shaped structure. The end of the support transverse rod 100 is fixed and connected to the first connecting portion 220 by fasteners such as bolts, and the second connecting portion 230 has two opposing beams. The base includes a side wall 231, with a position limiting wall 232 provided between the two base side walls 231, the position limiting wall 232 also extending vertically, the two base side walls 231 and the position limiting wall 232 forming a U-shaped structure, the two base side walls 231 together with the position limiting wall 232 forming a hinge connection groove 233, a hinge connection rod 234 provided within the hinge connection groove 233, and both ends of the hinge connection rod 234 are rotatably connected to the two base side walls 231, respectively. The position limiting wall 232 abuts against the upper support rod 300 and the lower support leg 400, limiting the maximum extension position of the upper support rod 300 and the lower support leg 400, and provides a certain support function to the upper support rod 300 and the lower support leg 400, improving the structural stability of the support assembly. Specifically, as shown in Figure 3, when the upper support rod 300 and lower support legs 400 rotate to their maximum extended positions, the support assembly is in an extended state, and the upper support rod 300 abuts against the upper end of the position limiting wall 232, causing the upper support rods 300 at both ends of the support horizontal rod 100 to be inclined outward. This forms a trapezoidal structure where the support horizontal rod 100 and the upper support rods 300 at both ends of the support horizontal rod 100 widen at the top and narrow at the bottom, improving the support stability of the bed cloth assembly 700 by the upper support rod 300. Additionally, the lower support legs 400 abut against the side ends of the position limiting wall 232, causing the lower support legs 400 at both ends of the support horizontal rod 100 to extend vertically, and the lower support legs 400 are positioned perpendicular to the mounting plane, thereby ensuring the support stability of the upper support rod 300 and the bed cloth assembly 700 by the lower support legs 400.

[0025] The upper support rod 300 includes a hinge connection end 310 and a mounting end 320, the hinge connection end 310 being connected to the hinge connection rod 234 and rotatably mounted in the hinge connection groove 233 so that the upper support rod 300 can be rotated to approach the support transverse rod 100 or rotated to move away from the support transverse rod 100, the mounting end 320 is provided with a support groove 321, the support groove 321 is made of elastic plastic and has an opening, the bed cross support rod 710 is detachably engaged in the support groove 321 through the opening, engages with the mounting end 320 when the support assembly is deployed and separates from the mounting end 320 when the support assembly is folded, thereby further reducing the volume of the folding bed after folding and storage. Of course, other detachable connection methods such as clamps may be used between the bed cross support rod 710 and the mounting end 320.

[0026] The lower support leg 400 includes a bottom support rod 420 and two side support rods 410. The top ends of the two side support rods 410 are hinged to the middle of the upper support rod 300, and the bottom ends of the two side support rods 410 are integrally molded and connected to the left and right ends of the bottom support rod 420, respectively. The two side support rods 410 are both inclined inward so that the entire lower support leg 400 forms a triangular structure, thereby improving the support stability and structural strength of the lower support leg 400.

[0027] Furthermore, the side support rod 410 includes a connecting segment 411 whose upper half is close to one end of the upper support rod 300, and a support segment 412 whose lower half is spaced away from one end of the upper support rod 300. The support segment 412 is provided at an inclination with respect to the connecting segment 411, forming an angle between the support segment 412 and the connecting segment 411, with the angle being between 155° and 175°, preferably 170°. The inclination of the support segment 412 with respect to the connecting segment 411 improves the support stability of the lower support leg 400. When the support assembly is deployed, the connecting segment 411 of the side support rod 410 extends vertically in close contact with the position limiting wall 232, the support segment 412 of the side support rod 410 is positioned at an angle to the mounting plane, and the support segments 412 at the lower support legs 400 at both ends of the support transverse rod 100 and the support transverse rod 100 form a trapezoidal structure that narrows at the top and widens at the bottom, thereby further improving the support stability and structural strength of the support assembly and preventing shaking of the support assembly during use.

[0028] Furthermore, as shown in Figures 6-11, a mounting plate 430 is provided between the two side support rods 410 of the lower support leg 400, a locking push button 500 is slidably mounted on the mounting plate 430, a retraction hole 431 is provided in the mounting plate 430 for the first locking part 510 to pass through, slide grooves 432 are provided on both the left and right sides of the retraction hole 431, a connecting member 520 is provided on the back of the locking push button 500 that engages with the slide grooves 432, and the connecting member 520 engages with the buckle 522 of the connecting rod 521 Including the connection rod 521, which is provided perpendicular to the back of the locking push button 500 and extends toward the slide groove 432 and is located within the slide groove 432, and the buckle 522, which is provided at the end of the connection rod 521 and abuts against the back of the mounting plate 430, the locking push button 500 can slide up and down between the locked position and the unlocked position along only the slide groove 432 and cannot move away from the mounting plate 430 and separate from the mounting plate 430.

[0029] Furthermore, a return member 600 is provided between the locking push button 500 and the mounting plate 430. The return member 600 continuously applies a force to the locking push button 500 to move it to the locked position after the external force acting on the locking push button 500 is removed. In other words, the locking push button 500 is always in the locked position, and can only be moved to the unlocked position after the user applies force to the locking push button 500. This prevents the locking push button 500 itself from sliding to the unlocked position and unlocking the lower support leg 400 during use. The return member 600 can be made of any material having elasticity and energy storage, such as elastic rubber or a leaf spring. Preferably, the return member 600 is implemented as a compression spring, the upper end of which is connected to the mounting plate 430, and the lower end of which is fitted onto the positioning column of the lock push button 500. When the user operates the lock push button 500 to slide it upward to the unlocked position, the compression spring is compressed and deformed. When the user releases the lock push button 500, the force applied to the lock push button 500 is removed, and the compression spring returns to its original shape, pushing the lock push button 500 up to the locked position.

[0030] The first locking portion 510 specifically includes an extending member 511 and a stopper member 512, the extending member 511 being provided perpendicularly to the back of the lock push button 500, the stopper member 512 being provided at the end of the extending member 511, the extending member 511 and the stopper member 512 passing through the retraction hole 431, the stopper member 512 having a first locking plane 513 close to the extending member 511 side and a guide arc surface 514 spaced apart from the extending member 511 side, and the second locking portion 210 being provided on the connecting seat 200, spaced apart from the connecting seat 200 to form a housing cavity 211, and having a second locking plane 212 close to the housing cavity 211 side and a guide slope 213 spaced apart from the housing cavity 211 side. When the first locking portion 510 and the second locking portion 210 are locked together, the stopper member 512 is positioned within the housing cavity 211, and the first locking surface 513 of the stopper member 512 and the second locking surface 212 of the second locking portion 210 come into contact and engage, preventing the lower support leg 400 from rotating in a direction away from the connecting seat 200, thereby locking the support assembly in the deployed state.

[0031] Furthermore, during the process in which the first locking portion 510 and the second locking portion 210 gradually engage, the guide arc surface 514 of the stopper member 512 comes into contact with the guide slope 213 of the second locking portion 210. The engagement between the guide arc surface 514 and the guide slope 213 causes the stopper member 512 to slide upward relative to the second locking portion 210, compressing the return member 600. After the stopper member 512 slides to the upper end surface of the second locking portion 210, it stops sliding upward. At this point, the return member 600 deforms to restore its shape, pushing the stopper member 512 downward into the housing cavity 211, thereby engaging the first locking plane 513 of the stopper member 512 with the second locking plane 212 of the second locking portion 210 and locking them together. In other words, the user does not need to operate the lock push button 500 when rotating, extending, and locking the lower support leg 400. Simply by rotating the lower support leg 400 to its maximum extended position, the first locking part 510 on the lock push button 500 automatically engages with the second locking part 210 on the connecting seat 200, locking the rotation of the lower support leg 400.

[0032] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art will understand that this application is not limited to the above embodiments, and that the above embodiments and specification are merely for illustrative purposes to illustrate the principles of this application. Without departing from the spirit and scope of this application, this application may also have various variations and improvements, all of which fall within the scope of the claims. The scope of protection of this application is defined by the attached claims and equivalents. [Explanation of Symbols]

[0033] 100 Support lateral rod 200 connection seat 210 Second Lock Section 211 containment cavities 212 Second Lock Plane 213 Guide Slope 220 First connection section 230 Second connection section 231 Base side wall 232 Position restriction wall 233 Hinge connection groove 234 Hinge connection rod 300 Upper support rod 310 Hinge connection end 320 Mounting end 321 Support groove 400 Lower support leg 410 Side support rod 411 Connection Segments 412 Support Segments 420 Bottom support rod 430 Mounting plate 431 Evacuation hole 432 Slide groove 500 Lock push button 510 First Lock Section 511 Extension member 512 Stopper component 513 First Lock Plane 514 Guide arc surface 520 Connecting Member 521 Connecting Rod 522 Buckle 600 Return component 700 Bed Cloth Assembly 710 Bed Cross Support Rod 720 Bedcloth

Claims

1. A support assembly, It includes a support horizontal rod and connecting seats provided at both ends of the support horizontal rod, An upper support rod is rotatably connected to the aforementioned connecting seat. The lower support leg is rotatably connected to the upper support rod. The upper support rod and the lower support leg are rotated in the same plane so that the support assembly can be switched between a folded state and an unfolded state. A locking push button is movably provided on the lower support leg. The aforementioned lock push button is provided with a first locking mechanism. The connecting seat is provided with a second locking portion. The aforementioned lock push button can be operated by sliding it from the unlocked position to the locked position. When the lock push button is in the locked position, the first locking part and the second locking part abut and engage with each other in such a way that the separation and rotation of the lower support leg and the connecting seat is restricted, thereby holding the support assembly in the deployed state. A support assembly characterized by the following features.

2. The first locking portion includes an extending member and a stopper member, The extending member is provided perpendicularly to the back of the lock push button. The stopper member is provided at the end of the extending member and has a first locking plane. A housing cavity is formed in the second locking portion. The second locking portion has a second locking plane, The locking push button drives the stopper member to slide within the housing cavity, thereby engaging the first locking plane and the second locking plane with each other, and thereby restricting the separation rotation of the lower support leg and the connecting seat. The support assembly according to claim 1, characterized by its features.

3. A return member is provided between the locking push button and the lower support leg. The return member continuously applies a force to the lock push button to move it to the locked position, so that the lock push button can move to the locked position after the external force acting on the lock push button has been removed. The support assembly according to claim 2, characterized in that it is as described above.

4. The aforementioned upper support rod includes a hinge connection end and a mounting end, The hinge connection end is rotatably connected to the connection seat, The aforementioned mounting end is detachably connected to the bed cloth assembly. The top of the lower support leg is rotatably connected to the middle of the upper support rod, The lower support leg is operable to be driven to rotate and fold or rotate and extend the upper support rod. When both the upper support rod and the lower support leg are rotated to their maximum extended positions, the horizontal support rod, the upper support rod, and the lower support leg form a triangular structure. The support assembly according to any one of claims 1 to 3.

5. A support groove is provided at the mounting end. The bed cloth assembly is secured within the support groove so as to be removably connected to the mounting end. The support assembly according to feature 4.

6. The connecting seat includes a first connecting portion that connects to the support horizontal rod and a second connecting portion that connects to the upper support rod. The second connection portion includes two base side walls and a position limiting wall connected between the two base side walls, The two base side walls, together with the position limiting wall, form a hinge connection groove. A hinge connecting rod is provided within the aforementioned hinge connecting groove. The upper support rod is connected to the hinge connecting rod so as to be rotatably provided within the hinge connecting groove via the hinge connecting end, The position limiting wall brings the upper support rod and the lower support leg into contact with each other so as to limit the maximum extended position of the upper support rod and the lower support leg. The support assembly according to feature 4.

7. The lower support leg includes a bottom support rod and two side support rods. The top ends of both side support rods are hinged to the middle portion of the upper support rod. The bottom ends of the two side support rods are fixed and connected to the left and right ends of the bottom support rod, respectively. The two side support rods are inclined so that the entire lower support leg forms a triangular shape. The support assembly according to claim 6.

8. The side support rod includes a connecting segment adjacent to the upper support rod and a support segment spaced apart from the upper support rod. The support segment is provided at an inclination with respect to the connecting segment, An obtuse angle is formed between the support segment and the connecting segment. The support assembly according to feature 7.

9. The angle of the aforementioned included angle is between 155° and 175°. The support assembly according to claim 8.

10. The position limiting wall extends vertically, and the upper support rod abuts against the upper end of the position limiting wall, so that the upper support rods at both ends of the support horizontal rod are inclined outward. The aforementioned support horizontal rod and the upper support rods located at both ends of the aforementioned support horizontal rod form a trapezoidal structure that widens at the top and narrows at the bottom. The connecting segment abuts against the side end of the position limiting wall, causing the connecting segment to extend vertically. The support horizontal rod and the support segments at both ends of the support horizontal rod form a trapezoidal structure that narrows at the top and widens at the bottom. The support assembly according to claim 8.

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