阅读说明：本技术 一种便携式电池相机 (Portable battery camera ) 是由 李俊 于 2021-09-24 设计创作，主要内容包括：本发明涉及电池相机技术领域,特别涉及一种便携式电池相机。包括电池相机模块、辅助单元、伸缩支撑单元和折叠架单元；所述辅助单元壳体安装在电池相机模块本体的一侧壁上；所述伸缩支撑单元一端铰接在电池相机模块底部；所述折叠架单元包括第二伸缩杆和两组相机支撑模组；所述第二伸缩杆顶部安装在辅助单元的壳体内,所述第二伸缩杆底部可活动贯穿至辅助单元壳体外部；两组所述相机支撑模组底部对称铰接在第二伸缩杆两侧壁上,且顶部分别卡接在第二伸缩杆的两侧壁上；所述伸缩支撑单元另一端可活动卡接在两组相机支撑模组上。本发明可将折叠架单元收纳于折叠架存放腔内,使得电池相机的整体体积缩小,提高了携带的便利性。(The invention relates to the technical field of battery cameras, in particular to a portable battery camera. The device comprises a battery camera module, an auxiliary unit, a telescopic supporting unit and a folding frame unit; the auxiliary unit housing is mounted on a side wall of the battery camera module body; one end of the telescopic supporting unit is hinged to the bottom of the battery camera module; the folding frame unit comprises a second telescopic rod and two groups of camera supporting modules; the top of the second telescopic rod is arranged in the shell of the auxiliary unit, and the bottom of the second telescopic rod can movably penetrate through the shell of the auxiliary unit; the bottoms of the two groups of camera supporting modules are symmetrically hinged on two side walls of the second telescopic rod, and the tops of the two groups of camera supporting modules are respectively clamped on two side walls of the second telescopic rod; the other end of the telescopic supporting unit can be movably clamped on the two camera supporting modules. The folding rack unit can be accommodated in the folding rack storage cavity, so that the overall volume of the battery camera is reduced, and the carrying convenience is improved.)

1. A portable battery camera, characterized in that: comprises a battery camera module (100), an auxiliary unit (200), a telescopic support unit (300) and a folding leg unit (400); the auxiliary unit (200) housing is mounted on a side wall of the battery camera module (100) body; one end of the telescopic supporting unit (300) is hinged to the bottom of the battery camera module (100);

the folding leg unit (400) comprises a second telescopic rod (410) and two groups of camera supporting modules; the top of the second telescopic rod (410) is arranged in the shell of the auxiliary unit (200), and the bottom of the second telescopic rod (410) can movably penetrate through the outside of the shell of the auxiliary unit (200); the bottoms of the two groups of camera supporting modules are symmetrically hinged to two side walls of the second telescopic rod (410), and the tops of the two groups of camera supporting modules are respectively clamped on the two side walls of the second telescopic rod (410); the other end of the telescopic supporting unit (300) is movably clamped on the two groups of camera supporting modules; the camera supporting module comprises two groups of folding rod mechanisms (420) which are sequentially connected end to end, and a third telescopic rod (430) is arranged between the two groups of folding rod mechanisms (420); the folding rod mechanism (420) comprises a folding rod placing tube (421) and a folding rod body (422); folding rod body (422) one end articulates on folding rod places pipe (421) inner wall, and the other end articulates there is mounting (423), folding rod body (422) can drive mounting (423) and remove to folding rod and place pipe (421) outside.

2. A portable battery camera as defined in claim 1, wherein: the battery camera module (100) includes a camera body (110); the shell of the auxiliary unit (200) is fixedly arranged on the outer wall of one side of the camera body (110); the camera body (110) is provided with a camera battery (120), and the camera battery (120) is electrically connected with the camera body (110).

3. A portable battery camera as defined in claim 2, wherein: the camera comprises a camera body (110), wherein a telescopic rod mounting groove (130) is formed in the bottom of the camera body, and one end of a telescopic supporting unit (300) is hinged to the inner wall of one side of the telescopic rod mounting groove (130).

4. A portable battery camera as defined in claim 3, wherein: the auxiliary unit (200) comprises a housing (210); the casing (210) fixed mounting is on one side outer wall of camera body (110), a plurality of groups of finger mounting grooves (220) have been seted up from the top down equidistant on casing (210) is close to a lateral wall of camera body (110) camera lens, every group the opening part of finger mounting groove (220) all fixed mounting has a set of finger sheath (230).

5. A portable battery camera according to claim 4, characterized in that: the folding rack storage cavity is formed in the shell (210), the bottom of the folding rack storage cavity is of an open structure, and a bottom cover (240) is movably clamped at an opening of the folding rack storage cavity.

6. A portable battery camera according to claim 1 or 5, characterized in that: second telescopic link (410) one end fixed mounting be in the folding leg deposits on the top inner wall in chamber, just second telescopic link (410) other end accessible the opening part that the folding leg deposited the chamber bottom run through to casing (210) are outside, and with flexible supporting element (300) activity joint.

7. A portable battery camera according to claim 4, characterized in that: the telescopic supporting unit (300) comprises a telescopic rod mounting block (310) and two groups of first telescopic rods (320); one end of the telescopic rod mounting block (310) is hinged to the inner wall of one side, away from the shell (210), of the telescopic rod mounting groove (130), and the other end of the telescopic rod mounting block (310) is hinged to the two groups of first telescopic rods (320).

8. A portable battery camera according to claim 1 or 7, characterized in that: the other ends of the two groups of first telescopic rods (320) are fixedly provided with a group of telescopic rod clamping joints (330); the other ends of the two groups of telescopic rod clamping joints (330) can penetrate through the outside of the telescopic rod mounting groove (130) and are movably clamped with the two groups of camera supporting modules respectively; and a limiting elastic sheet (340) is fixedly arranged at an opening of the telescopic rod mounting groove (130).

9. A portable battery camera as defined in claim 1, wherein: the folding rod mechanism (420) further comprises two groups of sliding rods (426); two groups of sliding rods (426) are symmetrically hinged on the inner walls of two sides of the folding rod placing pipe (421), and sliding rails (427) are arranged on the sliding rods (426).

10. A portable battery camera as defined in claim 9, wherein: two sets of sliders (424) are symmetrically installed on the outer walls of two sides of the folding rod body (422), the sliders (424) are connected in the sliding rails (427) in a sliding mode, the other ends of the sliders (424) penetrate through one side, far away from the folding rod body (422), of the sliding rails (427), limiting blocks (425) are fixedly installed, and the diameters of the limiting blocks (425) are larger than the width of the sliding rails (427).

Technical Field

The invention belongs to the technical field of battery cameras, and particularly relates to a portable battery camera.

Background

A battery camera is one of the most common tools in our daily lives, and its main function is to record image information. And with the development of technology, battery cameras are also developing toward small volume and high definition.

When the battery camera is used outdoors, in order to meet the requirement of fixed-point shooting, the camera support needs to be carried to fix the battery camera, but the camera support is usually large in size. It is very inconvenient to carry.

Disclosure of Invention

In view of the above problems, the present invention provides a portable battery camera, including a battery camera module, an auxiliary unit, a telescopic support unit, and a folding leg unit; the auxiliary unit housing is mounted on a side wall of the battery camera module body; one end of the telescopic supporting unit is hinged to the bottom of the battery camera module;

the folding frame unit comprises a second telescopic rod and two groups of camera supporting modules; the top of the second telescopic rod is arranged in the shell of the auxiliary unit, and the bottom of the second telescopic rod can movably penetrate through the shell of the auxiliary unit; the bottoms of the two groups of camera supporting modules are symmetrically hinged on two side walls of the second telescopic rod, and the tops of the two groups of camera supporting modules are respectively clamped on two side walls of the second telescopic rod; the other end of the telescopic supporting unit can be movably clamped on the two groups of camera supporting modules; the camera support module comprises two groups of folding rod mechanisms which are sequentially connected end to end, and a third telescopic rod is arranged between the two groups of folding rod mechanisms; the folding rod mechanism comprises a folding rod placing pipe and a folding rod body; folding rod body one end articulates on the folding rod places the inside pipe wall, and the other end articulates there is the mounting, the folding rod body can drive the mounting and remove to the folding rod and place the outside of a tub.

Further, the battery camera module includes a camera body; the shell of the auxiliary unit is fixedly arranged on the outer wall of one side of the camera body; the camera body is provided with a camera battery, and the camera battery is electrically connected with the camera body.

Further, the bottom of the camera body is provided with a telescopic rod mounting groove, and one end of the telescopic supporting unit is hinged to the inner wall of one side of the telescopic rod mounting groove.

Further, the auxiliary unit includes a housing; the shell is fixedly installed on the outer wall of one side of the camera body, a plurality of groups of finger placing grooves are formed in the side wall, close to the camera body lens, of the shell at equal intervals from top to bottom, and a group of finger sheaths are fixedly installed at the opening of each group of finger placing grooves.

Furthermore, a folding rack storage cavity is formed in the shell, the bottom of the folding rack storage cavity is of an open structure, and a bottom cover is movably clamped at an opening of the folding rack storage cavity.

Furthermore, second telescopic link one end fixed mounting be in the folding leg deposits on the top inner wall in chamber, just second telescopic link other end accessible the opening part that the folding leg deposited the chamber bottom runs through to the casing is outside, and with flexible support element activity joint.

Furthermore, the telescopic supporting unit comprises a telescopic rod mounting block and two groups of first telescopic rods; the telescopic link installation piece one end articulates on the telescopic link mounting groove keeps away from one side inner wall of casing, just the telescopic link installation piece other end is articulated with two sets of first telescopic links.

Furthermore, the other ends of the two groups of first telescopic rods are fixedly provided with a group of telescopic rod clamping joints; the other ends of the two groups of telescopic rod clamping joints can penetrate through the outside of the telescopic rod mounting groove and are movably clamped with the two groups of camera supporting modules respectively; and a limiting elastic sheet is fixedly arranged at the opening of the telescopic rod mounting groove.

Furthermore, the folding rod mechanism also comprises two groups of sliding rods; the two groups of slide bars are symmetrically hinged on the inner walls of the two sides of the folding rod placing pipe, and slide rails are arranged on the slide bars.

Further, two sets of sliders are symmetrically installed on the outer walls of the two sides of the folding rod body, the sliders are connected in the slide rails in a sliding mode, the other ends of the sliders penetrate through one side, away from the folding rod body, of the slide rails, a limiting block is fixedly installed, and the diameter of the limiting block is larger than the width of the slide rails.

The invention has the beneficial effects that:

1. when needs fixed point was shot, deposit the second telescopic link of intracavity with the folding leg and extend to suitable length, then rotate two sets of camera support module to the angle with second telescopic link vertically to carry out the joint with two sets of telescopic link joint respectively, then fix respectively with each group's mounting, with the fixed requirement of completion to the camera body, need not additionally to carry the camera support, can satisfy the demand that camera body fixed point was shot. When the camera body is idle or needs to be shot by hand, the folding leg unit is stored in the folding leg storage cavity, so that the whole volume of the battery camera is reduced, and the carrying convenience is improved.

2. Each group of folding rod bodies can be independently adjusted, and when the uneven situation appears in a shooting place, the folding rod bodies are respectively rotated, so that the fixing pieces can be adjusted to different heights according to different terrains. And be articulated relation between mounting and the folding rod body for the fixed angle of mounting can be adjusted at will, lets the mounting not only can fix subaerial, also can fix on slope and perpendicular. The battery camera can be fixed on different terrains, and therefore compatibility of the battery camera is improved.

3. Before the angle adjustment is carried out on the folding rod body, the movable clamping rod is firstly drawn out from the clamping rod limiting groove. After the angle adjustment of the folding rod body is finished, the movable clamping rod is inserted into the clamping rod limiting groove, the clamping blocks can be clamped in the corresponding clamping grooves, and the fixing work of the folding rod body can be completed. The process is simple and fast, and the installation efficiency of the folding frame unit is improved.

4. When carrying out handheld shooting, the user inserts each group's finger mounting groove respectively with the finger to carry on spacingly to user's finger through pointing the sheath, improved the fixity of user to the camera body, prevent that the user from when using the camera body, because of not taking steadily and leading to the camera body to fall, promoted the security of camera body.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 shows a schematic configuration diagram of a battery camera according to an embodiment of the present invention;

FIG. 2 shows a schematic left-side cross-sectional view of an auxiliary unit according to an embodiment of the invention;

FIG. 3 shows a schematic bottom view of a battery camera according to an embodiment of the invention;

FIG. 4 illustrates a schematic bottom view of a telescoping support unit according to an embodiment of the invention;

fig. 5 is a schematic structural view showing a folding leg unit according to an embodiment of the present invention;

FIG. 6 shows a schematic structural diagram of a folding bar mechanism according to an embodiment of the present invention;

FIG. 7 shows a schematic view of the unfolded structure of the folding bar body according to an embodiment of the invention;

fig. 8 is a schematic view showing the connection of the folding leg unit to the camera body after being mounted according to the embodiment of the present invention;

fig. 9 shows an exploded view of the folding bar securing mechanism and latch mechanism according to an embodiment of the present invention.

In the figure: 100. a battery camera module; 110. a camera body; 120. a camera battery; 130. an expansion link mounting groove; 200. an auxiliary unit; 210. a housing; 220. a finger placement groove; 230. a finger sheath; 240. a bottom cover; 300. a telescopic support unit; 310. a telescopic rod mounting block; 320. a first telescopic rod; 330. the telescopic rod is clamped with a joint; 340. a limiting elastic sheet; 400. a folding leg unit; 410. a second telescopic rod; 420. a folding bar mechanism; 421. folding the rod placement tube; 422. a folding rod body; 423. a fixing member; 424. a slider; 425. a limiting block; 426. a slide bar; 427. a slide rail; 430. a third telescopic rod; 440. a folding bar fixing mechanism; 441. a rotating rod fixing frame; 442. a rotating rod body; 443. a card slot chassis; 444. a clamping rod limiting groove; 445. a card slot; 450. a clamping block mechanism; 451. a movable clamping rod; 452. and (7) clamping blocks.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a portable battery camera including a battery camera module 100, an auxiliary unit 200, a telescopic support unit 300, and a folding leg unit 400. Illustratively, as shown in fig. 1, 2 and 3, the housing of the auxiliary unit 200 is fixedly mounted on a sidewall of the body of the battery camera module 100.

The telescopic support unit 300 is hinged on the bottom outer wall of the battery camera module 100. The telescopic support unit 300 is used to support the battery camera module 100.

The folding leg unit 400 is fixedly installed in the housing of the auxiliary unit 200, the bottom of the folding leg unit 400 is movably penetrated to the outside of the housing of the auxiliary unit 200, and the folding leg unit 400 can be movably clamped with the telescopic supporting unit 300. The folding leg unit 400 is adapted to cooperate with the telescopic support unit 300 to support the battery camera module 100.

The battery camera module 100 includes a camera body 110. Illustratively, as shown in fig. 3, the housing of the auxiliary unit 200 is fixedly mounted on an outer wall of one side of the camera body 110. The camera body 110 is provided with a camera battery 120, and the camera battery 120 is electrically connected to the camera body 110. The bottom of the camera body 110 is provided with a telescopic rod mounting groove 130, and one end of the telescopic supporting unit 300 is hinged to the inner wall of one side of the telescopic rod mounting groove 130, which is far away from the auxiliary unit 200.

The auxiliary unit 200 includes a housing 210. Illustratively, the housing 210 is fixedly mounted on an outer wall of one side of the camera body 110, a plurality of groups of finger placing grooves 220 are formed in a side wall of the housing 210 close to the lens of the camera body 110 at equal intervals from top to bottom, and a group of finger sheaths 230 is fixedly mounted at an opening of each group of finger placing grooves 220. A folding rack storage cavity is formed in the shell 210, the bottom of the folding rack storage cavity is of an open structure, and a bottom cover 240 is movably clamped at an opening of the folding rack storage cavity. Folding leg unit 400 one end fixed mounting be in on the folding leg deposits the top inner wall in chamber, folding leg unit 400 other end accessible the opening part that the folding leg deposited the chamber bottom run through to the casing 210 is outside, and with flexible support element 300 activity joint.

When the fixed-point shooting is needed, the bottom cover 240 is opened, the folding leg unit 400 is opened, and the folding leg unit 400 is clamped with the telescopic supporting unit 300 to provide supporting force for the camera body 110, and the fixed-point shooting requirement of the camera body 110 can be met without additionally carrying a camera support. When the camera body 110 is left unused or the camera body 110 is used in a handheld manner, the folding stand unit 400 is located in the folding stand storage cavity, so that the overall size of the battery camera is reduced, and the carrying convenience is improved.

When using camera body 110 with hand-held type's mode, the user inserts each group's finger mounting groove 220 respectively with the finger to carry on spacingly to user's finger through finger sheath 230, improved the fixity of user to camera body 110, prevent that the user from when using camera body 110, because of not taking steadily camera body 110 and falling, promoted camera body 110's security.

The telescopic support unit 300 includes a telescopic rod mounting block 310 and two sets of first telescopic rods 320. For example, as shown in fig. 4, one end of the telescopic rod mounting block 310 is hinged to an inner wall of the telescopic rod mounting groove 130 on a side away from the housing 210, and the other end of the telescopic rod mounting block 310 is hinged to two sets of the first telescopic rods 320. Two sets of the other end of the first telescopic rod 320 is fixedly provided with a set of telescopic rod clamping joint 330. Two sets of telescopic link joint 330 the other end all can run through to telescopic link mounting groove 130 is outside, and with folding leg unit 400 activity joint. The opening of the telescopic rod mounting groove 130 is fixedly provided with a limiting elastic sheet 340.

When the camera body 110 is idle or the camera body 110 is used in a handheld manner, the two sets of first telescopic rods 320 are in a contracted state and are located in the telescopic rod mounting grooves 130. When the folding leg unit 400 is opened, the two sets of first telescopic links 320 are perpendicular to the camera body 110 by rotating the telescopic link mounting blocks 310. Then, the first telescopic rods 320 are respectively stretched, so that the two groups of telescopic rod clamping joints 330 can be respectively clamped on the two groups of camera supporting modules. Thereby improving the stability of the folding leg unit 400 and enhancing the load-bearing capacity of the folding leg unit 400.

The folding leg unit 400 includes a second telescopic rod 410 and two sets of camera support modules. Illustratively, as shown in fig. 5, the top of the second telescopic rod 410 is fixedly installed on the inner wall of the top of the storage cavity of the folding rack, and the bottom of the second telescopic rod 410 can penetrate through the opening at the bottom of the storage cavity of the folding rack to the outside of the housing 210. The bottoms of the two camera supporting modules are symmetrically hinged to the two side walls of the second telescopic rod 410, and the tops of the two camera supporting modules are movably clamped to the two side walls of the second telescopic rod 410 respectively. The camera support module comprises two groups of folding rod mechanisms 420 which are sequentially connected end to end, and a third telescopic rod 430 is arranged between the two groups of folding rod mechanisms 420. The two sets of first telescopic rods 320 can be movably clamped on the two sets of camera supporting modules respectively.

The folding rod mechanism 420 comprises a folding rod placing tube 421, a folding rod body 422 and two sets of sliding rods 426. For example, as shown in fig. 6 and 7, a folding rod fixing mechanism 440 is fixedly mounted on an inner wall of one end of the folding rod placing tube 421, and a set of latch mechanisms 450 is respectively fastened to two sides of the folding rod fixing mechanism 440. Folding rod body 422 one end articulate in on folding rod fixed establishment 440's the rotation portion, and the other end articulates there is mounting 423, folding rod body 422 can drive mounting 423 and run through to folding rod places the outside of pipe 421. The two sets of sliding bars 426 are symmetrically hinged on the inner walls of the two sides of the folding bar placing tube 421, and the sliding bars 426 are provided with sliding rails 427. Two sets of sliding blocks 424 are symmetrically installed on the outer walls of the two sides of the folding rod body 422, the sliding blocks 424 are slidably connected in the sliding rails 427, the other end of the sliding block 424 penetrates through one side of the sliding rails 427, which is far away from the folding rod body 422, a limiting block 425 is fixedly installed, and the diameter of the limiting block 425 is larger than the width of the sliding rails 427.

Specifically, the fixing member 423 adopts a fixing structure, such as, but not limited to, a vacuum chuck, a fixing screw, a fixing buckle, and the like.

Illustratively, as shown in fig. 8, when a fixed-point photographing of the camera body 110 is required, the bottom cover 240 is first opened, the second telescopic rod 410 is pulled out of the folding rack storage cavity, and the second telescopic rod 410 is stretched to a suitable length according to a required photographing height. Then, the two camera support modules are rotated to an angle perpendicular to the second telescopic rod 410 by using the hinge connection between the two camera support modules and the second telescopic rod 410, and the included angle between the two camera support modules is controlled to be 60-90 degrees by debugging, so that the overall stability of the folding leg unit 400 is improved. Then, the groups of folding rod bodies 422 are rotated to adjust the groups of fixing members 423, so that the groups of fixing members 423 can be rotated to a height suitable for fixing according to actual terrain. And then, the fixing members 423 are fixed respectively to meet the fixing requirement of the camera body 110, and no additional support is needed.

When needs fixed point were shot, deposit the intracavity with the folding leg second telescopic link 410 and stretch to suitable length, then rotate two sets of camera support module to the angle perpendicular with second telescopic link 410 to carry out the joint with two sets of telescopic link joint 330 respectively, then fix respectively with each group's mounting 423, in order to accomplish the fixed requirement to camera body 110, need not additionally to carry the camera support, can satisfy the demand that camera body 110 fixed point was shot. When the camera body 110 is left unused or the camera body 110 is used in a handheld manner, the folding stand unit 400 is located in the folding stand storage cavity, and the storage function of the camera folding stand is realized in a built-in manner, so that the overall size of the battery camera is reduced, and the carrying convenience is improved.

Each group of folding rod bodies 422 can be independently adjusted, and when the unevenness of the shooting place occurs, each group of folding rod bodies 422 are respectively rotated, so that each group of fixing pieces 423 can be adjusted to different heights according to different terrains. And the fixed piece 423 and the folding rod body 422 are in a hinged relation, so that the fixed angle of the fixed piece 423 can be adjusted at will, and the fixed piece 423 can be fixed on the ground, a slope and a vertical plane. The battery camera can carry out fixed-point shooting in different outdoor environments, and therefore compatibility of the battery camera is improved.

The folding bar fixing mechanism 440 includes a rotating bar fixing frame 441 and a rotating bar body 442. Illustratively, as shown in fig. 9, the rotating rod fixing frame 441 is fixedly mounted on an inner wall of one end of the folding rod placing tube 421, the rotating rod body 442 is rotatably connected to the rotating rod fixing frame 441, and the folding rod body 422 is fixedly mounted on the rotating rod body 442. Both ends of the rotating rod body 442 penetrate through the rotating rod fixing frame 441, and a set of slot base plate 443 is fixedly installed on each of the two ends. A clamping rod limiting groove 444 is formed in the clamping groove base plate 443, and the central axis of the clamping rod limiting groove 444 is overlapped with the clamping groove base plate 443. The periphery of the clamping rod limiting groove 444 is provided with a plurality of groups of clamping grooves 445 in an annular array.

The latch mechanism 450 includes a movable latch bar 451 and a latch 452. Illustratively, one end of the movable clamping rod 451 is movably clamped in the clamping rod limiting groove 444, and the other end thereof penetrates through the outside of the folding rod placing tube 421. The latch 452 is fixedly mounted on the movable latch bar 451, and the latch 452 is movably latched in any one set of the latch slots 445.

Before the angle adjustment of the folding lever body 422, the movable catch 451 is first pulled out from the catch-lever stopper 444. After the angle of the folding rod body 422 is adjusted, the movable clamping rod 451 is inserted into the clamping rod limiting groove 444, and the clamping block 452 can be clamped in the corresponding clamping groove 445, so that the fixing operation of the folding rod body 422 can be completed. The process is simple and fast, and the installation efficiency of the folding leg unit 400 is improved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.