CN114010011B

CN114010011B - Electronic temperature control refrigeration display cabinet without door design

Info

Publication number: CN114010011B
Application number: CN202111290668.0A
Authority: CN
Inventors: 毛志平
Original assignee: Zhejiang Xingxing Refrigeration Co Ltd
Current assignee: Zhejiang Xingxing Refrigeration Co Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2023-01-17
Anticipated expiration: 2041-11-02
Also published as: CN114010011A

Abstract

The invention discloses an electronic temperature control refrigeration display cabinet without a door, and particularly relates to the technical field of refrigeration display cabinets.

Description

Electronic temperature control refrigeration display cabinet without door design

Technical Field

The invention relates to the technical field of refrigeration display cabinets, in particular to an electronic temperature control refrigeration display cabinet without a door.

Background

The refrigerated showcase is an apparatus for refrigerating and displaying articles such as food, medicine and the like, and is commonly used in places such as markets, supermarkets, convenience stores and the like. Can be used for refrigerating and storing various products such as cakes, fruits, vegetables, fresh meat, medicines and the like. The cold-stored show cupboard of electron control by temperature change of current no door design is when placing object article, its rectangle chamber bottom that is used for the article of storage is generally used for placing multiple article, then place the show frame in rectangle chamber upper end and demonstrate, the show shelf that uses is mostly fixed, its height can not be adjusted, and when piling up more article in rectangle chamber bottom, article can contact with show frame bottom, the show frame is difficult for placing again, cause the slope of show frame angle easily, influence the bandwagon effect of the article in the show frame, we provide the cold-stored show cupboard of electron control by temperature change of no door design for this reason and are used for solving above-mentioned problem.

Disclosure of Invention

The invention aims to provide an electronic temperature control refrigeration display cabinet without a door design, so as to solve the problems in the background technology.

In order to solve the technical problem, the invention adopts the following technical scheme: an electronic temperature control refrigeration display cabinet without a door comprises a refrigerator body, wherein the refrigerator body comprises a box body, a rectangular protective plate is installed at the top end of the box body, a connector is inserted into the bottom end of one side of the box body, shutters are installed on one side of the box body where the connector is installed and on the side of the box body where the connector is installed, a plurality of universal wheels are distributed on the bottom end of the box body in a rectangular mode, a compressor is installed at the lower end inside the box body, and a rectangular cavity is formed in the top end of the box body;

the bottom of the rectangular cavity is provided with a fixing component, the fixing component comprises a chassis, a first rectangular box is arranged at the center of the top end of the chassis, a rotating shaft is arranged in the first rectangular box in a rotating mode, two first gears which are distributed up and down are arranged on the rotating shaft, two racks which are symmetrically distributed are meshed with the outer rings of the first gears, a limiting column is arranged on one side, away from the first gears, of the racks, a second rectangular box is arranged at the top end of the first rectangular box, a first rotating rod is arranged on one side of the second rectangular box in a rotating mode, a second gear is arranged at one end, arranged in the second rectangular box, of the first rotating rod, the second gear is meshed with a first side gear, the bottom end of the chassis is in contact with the bottom end of the rectangular cavity, the upper end of the rotating shaft is rotatably arranged in the second rectangular box, and the rotating shaft is rotatably arranged at the centers of the first rectangular box and the second rectangular box through a bearing, the first side gear is arranged at the upper end of the rotating shaft, the four side surfaces of the first rectangular box are respectively provided with symmetrical limiting holes, the racks meshed with the first gear can pass through the limiting holes at the two symmetrical sides of the first rectangular box, the limiting columns at the side surfaces of the racks can slide in the limiting holes through which the racks pass, the adjacent racks are distributed in a right angle, one end, close to the inner wall of the rectangular cavity, of the limiting column connected with the two racks meshed with the first gear at the bottom layer is provided with a pressing plate, the internal threads of the limiting column connected with the two racks meshed with the first gear at the top layer are provided with a first screw rod, one end, close to the inner wall of the rectangular cavity, of the first screw rod is provided with a clamping ring, one end, provided with the clamping ring, of the first screw rod and the outer ring of the clamping ring are provided with a fixing pile, and the first screw rod and the clamping ring can rotate in the fixing pile, a pressing plate is installed at one end, far away from the first screw, of the fixing pile, and a buffer plate is installed at the other side of the pressing plate;

the supporting component is installed on the top end of the second rectangular box and comprises a connecting block, a first rectangular cylinder is installed on the top end of the connecting block, a first fixing block is installed on the top end of the first rectangular cylinder, a second screw rod is arranged at the center of the first fixing block in a threaded mode, a third gear is installed on the top end of the second screw rod, a second side gear is meshed with the third side gear, a second rotating rod is installed at the center of the second side gear, a second rectangular cylinder is arranged on the outer ring of the first rectangular cylinder in a sliding mode, a supporting block is installed on the top end of the second rectangular cylinder, a fixing column is installed at the center of the top end of the supporting block, four first hinged seats are annularly distributed on the outer ring of the fixing column, the first hinged seats are hinged to be connected with second hinged seats, an offset rod is installed at one end, away from the first hinged seats, a rectangular sleeve rod is arranged on the offset rod in a sliding mode, a rectangular display frame is placed on an adjacent rectangular sleeve rod, and a supporting column is installed below one end, away from the fixing column, away from the rectangular sleeve rod.

Preferably, three pressing strips which are distributed in a concave mode are mounted on four side faces of the box body, the pressing strips are fixed on the box body through self-tapping nuts, and the rectangular guard plate is mounted at the top end of the outer ring of the rectangular cavity.

Preferably, the connecting block is installed in second rectangle case top center department, spacing piece is installed to second screw rod bottom, the second dwang passes through the bearing and rotates the setting in second rectangle section of thick bamboo upper end, second rectangle section of thick bamboo upper end internally mounted has the second fixed block, second screw rod upper end passes through the bearing and rotates the setting in second fixed block center department.

Preferably, the offset rod is provided with symmetrical limiting strips, the rectangular sleeve rod is internally provided with symmetrical limiting grooves, and the symmetrical limiting strips can slide in the symmetrical limiting grooves.

Preferably, the supporting legs is installed to the support column bottom, the supporting legs bottom can contact with the inside bottom in rectangular cavity, a first rectangle section of thick bamboo is installed on the support column top, a second rectangle section of thick bamboo is slided and is equipped with in the first rectangle section of thick bamboo outside, a first rectangle section of thick bamboo and a second rectangle section of thick bamboo internally mounted have first fixed block, second screw rod, third gear, second side gear, second dwang and second fixed block, two spliced poles of longitudinal symmetry are installed on second rectangle section of thick bamboo top, the top layer the spliced pole top and rectangle loop bar fixed connection, the top layer the spliced pole bottom is installed the third articulated seat, the articulated fourth articulated seat that is connected with of third articulated seat, the spliced pole top fixed connection of fourth articulated seat bottom and bottom.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the first rotating rod is rotated to enable the rotating shaft to rotate along with the rotating rod, the rotating shaft rotates to drive the rack and the limiting column to move oppositely, and then the first screw rod is rotated in a matching manner, so that the buffer plate on the side surface of the pressure plate is contacted with the inner side of the rectangular cavity, and the supporting component at the top end of the second rectangular box is supported and fixed.

2. According to the invention, the bottom end of the offset rod is contacted with the top end of the supporting block by shifting the offset rod, and the position of the rectangular loop rod is adjusted by sliding the rectangular loop rod on the offset rod.

3. According to the invention, the second screw rods are rotated through the plurality of second screw rods, and the second screw rods are rotated to drive the second rectangular cylinder to slide on the outer ring of the first rectangular cylinder, so that the height and the angle of the rectangular loop bar are adjusted, the display frame placed on the rectangular loop bar can be kept horizontal, and the placement of displayed articles is facilitated.

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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic front view of the present invention.

FIG. 2 is a schematic side view of the present invention.

FIG. 3 is a schematic view of the internal cross-sectional structure of the present invention.

FIG. 4 is a schematic cross-sectional view of the present invention.

FIG. 5 is a cross-sectional view of the fixing member and the supporting member according to the present invention.

FIG. 6 is an enlarged view of the structure at A in FIG. 5 according to the present invention.

FIG. 7 is an enlarged view of the structure at B in FIG. 5 according to the present invention.

FIG. 8 is an enlarged view of the structure at C in FIG. 5 according to the present invention.

FIG. 9 is an enlarged view of the structure shown at D in FIG. 5 according to the present invention.

FIG. 10 is an enlarged view of the structure at E in FIG. 5 according to the present invention.

In the figure: 1. a freezer; 101. a box body; 102. a rectangular guard plate; 103. layering; 104. a louver; 105. a connector; 106. a compressor; 107. a universal wheel; 108. a rectangular cavity; 2. a fixing component; 201. a chassis; 202. a first rectangular box; 203. a rotating shaft; 204. a first gear; 205. a rack; 206. a limiting post; 207. a first screw; 208. a snap ring; 209. fixing the pile; 210. pressing a plate; 211. a buffer plate; 212. a second rectangular box; 213. a first rotating lever; 214. a second gear; 215. a first side gear; 3. a support assembly; 301. connecting blocks; 302. a first rectangular cylinder; 303. a first fixed block; 304. a second screw; 305. a third gear; 306. a second side gear; 307. a second rotating lever; 308. a second fixed block; 309. a second rectangular cylinder; 310. a support block; 311. fixing a column; 312. a first hinge mount; 313. a second hinge mount; 314. an offset lever; 315. a limiting strip; 316. a rectangular loop bar; 317. a limiting groove; 318. connecting columns; 319. a third hinge mount; 320. a fourth hinged seat; 321. and (4) a support column.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The embodiment is as follows: as shown in fig. 1-10, the invention provides an electronic temperature control refrigeration display cabinet without a door, which comprises a refrigerator 1, wherein the refrigerator 1 comprises a box body 101, a rectangular guard plate 102 is installed at the top end of the box body 101, a connector 105 is inserted into the bottom end of one side of the box body 101, shutters 104 are installed on one side of the box body 101 where the connector 105 is installed and one side of the box body 101 where the connector 105 is installed, so that the heat dissipation effect inside the box body 101 is enhanced, a plurality of universal wheels 107 are distributed on the bottom end of the box body 101 in a rectangular manner, so that the refrigerator 1 can move, a compressor 106 is installed at the lower end inside the box body 101, a rectangular cavity 108 is formed in the top end of the box body 101, three pressure strips 103 distributed in a concave manner are installed on four side surfaces of the box body 101, the pressure strips 103 are fixed on the box body 101 through self-tapping nuts, and the rectangular guard plate 102 is installed at the top end of the outer ring of the rectangular cavity 108 so as to protect the top end of the box body 101.

Further, fixed subassembly 2 is installed to the inside bottom in rectangular cavity 108, fixed subassembly 2 is including chassis 201, chassis 201 top center department installs first rectangle case 202, the inside rotation of first rectangle case 202 is equipped with axis of rotation 203, be equipped with two first gears 204 that distribute from top to bottom on the axis of rotation 203, the meshing of first gear 204 outer lane has two symmetric distribution's rack 205, drives rack 205 through rotating axis of rotation 203 and removes, one side that first gear 204 was kept away from to rack 205 is installed spacing post 206, second rectangle case 212 is installed on first rectangle case 202 top, second rectangle case 212 one side is rotated and is equipped with first rotation pole 213, first rotation pole 213 is installed in the inside one end of second rectangle case 212 and is installed second gear 214, second gear 214 meshes has first side gear 215, utilizes first rotation pole 213 to rotate and drive first side gear 215 and rotate.

Further, the bottom end of the chassis 201 is in contact with the bottom end inside the rectangular cavity 108, the upper end of the rotating shaft 203 is rotatably disposed inside the second rectangular box 212, the rotating shaft 203 is rotatably disposed at the centers of the first rectangular box 202 and the second rectangular box 212 through bearings, the first side gear 215 is mounted at the upper end of the rotating shaft 203, so that the first side gear 215 can drive the rotating shaft 203 to rotate, the four side surfaces of the first rectangular box 202 are respectively provided with symmetrical limiting holes, the racks 205 engaged with the first gear 204 can pass through the limiting holes at the symmetrical two sides of the first rectangular box 202, the limiting posts 206 at the side surfaces of the racks 205 can slide inside the limiting holes through which the racks 205 pass, the adjacent racks 205 are distributed in a right angle, and the moving process of the limiting posts 206 is limited, the bottom the clamp plate 210 is all installed to the one end that is close to rectangular chamber 108 inner wall of spacing post 206 that two racks 205 that first gear 204 meshed are connected, the top layer the inside screw thread of spacing post 206 that two racks 205 that first gear 204 meshed are connected is equipped with first screw rod 207, snap ring 208 is installed to the one end that first screw rod 207 is close to rectangular chamber 108 inner wall, spud pile 209 is installed to the one end and the snap ring 208 outer lane that snap ring 208 was installed to first screw rod 207, first screw rod 207 and snap ring 208 can be at the inside rotation of spud pile 209, the one end that first screw rod 207 was kept away from to the spud pile 209 is installed clamp plate 210, buffer plate 211 is installed to clamp plate 210 opposite side, through rotating axis of rotation 203 and first screw rod 207, makes buffer plate 211 can contact with rectangular chamber 108 inner wall.

Further, the supporting component 3 is installed at the top end of the second rectangular box 212, the supporting component 3 includes a connecting block 301, a first rectangular cylinder 302 is installed at the top end of the connecting block 301, a first fixing block 303 is installed at the top end of the first rectangular cylinder 302, a second screw 304 is arranged at the center of the first fixing block 303 in a threaded manner, a third gear 305 is installed at the top end of the second screw 304, the third gear 305 is meshed with a second side gear 306, a second rotating rod 307 is installed at the center of the second side gear 306, a second rectangular cylinder 309 is arranged on the outer ring of the first rectangular cylinder 302 in a sliding manner, a supporting block 310 is installed at the top end of the second rectangular cylinder 309, a fixed column 311 is installed at the center of the top end of the supporting block 310, four first hinged seats 312 are annularly distributed on the outer ring of the fixed column 311, the first hinged seats 312 are hinged to be connected with second hinged seats 313 in a hinged manner, an offset rod 314 is installed at one end of the second hinged seats 313 far away from the first hinged seats 312, a rectangular sleeve rod 316 is slidably provided with a rectangular sleeve 316, and a rectangular sleeve 316 is installed below the supporting column 321 for supporting the rectangular sleeve 316.

Further, the connecting block 301 is installed at the center of the top end of the second rectangular box 212, the bottom end of the second screw 304 is provided with a limiting piece, the second rotating rod 307 is rotatably arranged at the upper end of the second rectangular cylinder 309 through a bearing, the second fixing block 308 is installed inside the upper end of the second rectangular cylinder 309, the upper end of the second screw 304 is rotatably arranged at the center of the second fixing block 308 through a bearing, so that the second screw 304 can rotate to drive the second rectangular cylinder 309 to slide on the outer ring of the first rectangular cylinder 302, the offset rod 314 is provided with symmetrical limiting strips 315, the rectangular loop bar 316 is internally provided with symmetrical limiting grooves 317, the symmetrical limiting strips 315 can slide inside the symmetrical limiting grooves 317 to limit the moving process of the rectangular loop bar 316, the bottom end of the supporting column 321 is provided with supporting legs, the bottom ends of the supporting legs can be in contact with the bottom end inside the rectangular cavity 108, first rectangular cylinder 302 is installed on support column 321 top, first rectangular cylinder 302 outside slides and is equipped with a second rectangular cylinder 309, first rectangular cylinder 302 and a second rectangular cylinder 309 internally mounted have first fixed block 303, second screw 304, third gear 305, second side gear 306, second dwang 307 and second fixed block 308, two spliced poles 318 of longitudinal symmetry are installed on second rectangular cylinder 309 top, the top layer spliced pole 318 top and rectangular loop bar 316 fixed connection, the top layer spliced pole 318 bottom install third articulated seat 319, third articulated seat 319 articulates and is connected with fourth articulated seat 320, the spliced pole 318 top fixed connection of fourth articulated seat 320 bottom and bottom makes rectangular loop bar 316 and skew pole 314 and supporting shoe 310's angle adjustable.

The working principle is as follows: when the device is used, the chassis 201 is placed in the middle of the bottom end in the rectangular cavity 108, the first rotating rod 213 is rotated to enable the second gear 214 on the first rotating rod 213 to rotate along with the first rotating rod, the second gear 214 is meshed with the first side gear 215, the first side gear 215 rotates along with the rotation of the second gear 214, the first side gear 215 rotates to drive the rotating shaft 203 to rotate, the rotating shaft 203 rotates to drive the two first gears 204 at the lower end of the rotating shaft to rotate, the first gear 204 rotates to drive the two racks 205 meshed with the first gear to move oppositely, the racks 205 move to drive the limiting columns 206 to move, the buffer plates 211 at the other sides of the pressure plates 210 at one ends of the two limiting columns 206 without the first screws 207 are in contact with the inner wall of the rectangular cavity 108, at the moment, the first rotating rod 213 stops rotating, and the buffer plates 211 at the side surfaces of the pressure plates 210 at one end of the first screws 207 are in contact with the two remaining sides of the rectangular cavity 108 by rotating the first screws 207 in the two remaining limiting columns 206, so that the support assembly 3 at the top end of the second rectangular box 212 is supported and fixed;

the bottom end of the offset rod 314 is contacted with the top end of the supporting block 310 by shifting the offset rod 314, the rectangular loop rod 316 slides on the offset rod 314 by utilizing the limit strip 315 to slide in the limit groove 317, so as to adjust the position of the rectangular loop rod 316, a rectangular display frame can be placed on the adjacent rectangular loop rod 316, the second side gear 306 follows the second side gear 304, the second side gear 306 is meshed with the third gear 305, the third gear 305 rotates along with the second side gear, the third gear 305 rotates to drive the second screw 304 to rotate on the second fixed block 308, the second screw 304 is arranged on the first fixed block 303 at the top end of the first rectangular cylinder 302 in a threaded manner, and when the second screw 304 rotates, the second rectangular cylinder 309 can be driven to slide on the outer ring of the first rectangular cylinder 302, so that the height of one end, close to the supporting block 310, of the offset rod 314 is adjusted;

the height of the rectangular loop bar 316 is adjusted by adjusting the positions of the first rectangular cylinder 302 and the second rectangular cylinder 309 below the rectangular loop bar 316 and matching with the height adjustment of the offset bar 314, so that the display frame placed on the rectangular loop bar 316 can be kept horizontal and is convenient to display.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides an electronic temperature control refrigerated display cabinet of no door design, includes freezer (1), its characterized in that: the refrigerator (1) comprises a box body (101), a rectangular protective plate (102) is installed at the top end of the box body (101), a connector (105) is inserted into the bottom end of one side of the box body (101), shutters (104) are installed on one side, where the connector (105) is installed, of the box body (101) and on one side, where the connector (105) is installed, of the box body (101) in a side-symmetrical mode, a plurality of universal wheels (107) are distributed in a rectangular mode at the bottom end of the box body (101), a compressor (106) is installed at the lower end inside the box body (101), and a rectangular cavity (108) is formed in the top end of the box body (101);

the fixed component (2) is installed at the bottom end inside the rectangular cavity (108), the fixed component (2) comprises a chassis (201), a first rectangular box (202) is installed at the center of the top end of the chassis (201), a rotating shaft (203) is arranged inside the first rectangular box (202) in a rotating mode, two first gears (204) distributed up and down are arranged on the rotating shaft (203), two racks (205) distributed symmetrically are meshed with the outer rings of the first gears (204), a limiting column (206) is installed on one side, away from the first gears (204), of the racks (205), a second rectangular box (212) is installed at the top end of the first rectangular box (202), a first rotating rod (213) is arranged on one side of the second rectangular box (212) in a rotating mode, a second gear (214) is installed at one end, inside the second rectangular box (212), a first side gear (215) is meshed with the second gear (214), the bottom end of the chassis (201) is in contact with the bottom end inside the rectangular cavity (108), the upper end of the rotating shaft (203) is rotatably arranged inside the second rectangular box (212), a bearing (215) is installed at the upper end of the second rectangular box (203), and the second rectangular box (203) is arranged at one side of the second rectangular box (215), the clamping device comprises a first rectangular box (202), limiting holes which are symmetrical are formed in four side faces of the first rectangular box (202), racks (205) meshed with first gears (204) can penetrate through the limiting holes in two symmetrical sides of the first rectangular box (202), limiting columns (206) on the side faces of the racks (205) can slide in the limiting holes penetrated by the racks (205), adjacent racks (205) are distributed in a right angle mode, a first screw (207) is arranged on the internal thread of each limiting column (206) connected with two racks (205) meshed with the first gear (204) at the bottom layer, a clamping ring (208) is arranged at one end, close to the inner wall of a rectangular cavity (108), of each limiting column (206) connected with the two racks (205) meshed with the first gear (204) at the top layer, a clamping ring (208) is arranged at one end of each first screw (207) close to the inner wall of the rectangular cavity (108), a fixing pile (209) is arranged at one end, a clamping ring (208) of each first screw (207) is arranged at one end provided with the clamping ring (208), a fixing pile (209) is arranged at the other end of each clamping ring (209), a buffer plate (211) is arranged at the other end of each first screw (207), and the other side of each clamping ring (209) is far away from the corresponding clamping ring (209), and the corresponding clamping plate (210) is arranged at the other side of each clamping ring (207);

the supporting component (3) is installed on the top end of the second rectangular box (212), the supporting component (3) comprises a connecting block (301), a first rectangular cylinder (302) is installed on the top end of the connecting block (301), a first fixing block (303) is installed on the top end of the first rectangular cylinder (302), a second screw (304) is arranged at the center of the first fixing block (303) in a threaded mode, a third gear (305) is installed on the top end of the second screw (304), the third gear (305) is meshed with a second side gear (306), a second rotating rod (307) is installed at the center of the second side gear (306), a second rectangular cylinder (309) is arranged on the outer ring of the first rectangular cylinder (302) in a sliding mode, a supporting block (310) is installed at the top end of the second rectangular cylinder (309), a fixed column (311) is installed at the center of the top end of the supporting block (310), four first hinged seats (312) are annularly distributed on the outer ring of the fixed column (311), the first hinged seats (312) are hinged to second hinged seats (313), an offset rod (314) is installed at one end, away from the first hinged seats (312), of the second hinged seats (313), a rectangular sleeve rod (316) is arranged on the offset rod (314) in a sliding mode, a rectangular display frame is placed on the adjacent rectangular sleeve rod (316), and a supporting column (321) is installed below one end, away from the fixed column (311), of the rectangular sleeve rod (316) ).

2. The electronic temperature-control refrigeration display cabinet without door design as claimed in claim 1, wherein three beads (103) are arranged on four sides of the cabinet body (101) in a concave distribution, the beads (103) are fixed on the cabinet body (101) through self-tapping nuts, and the rectangular protective plate (102) is arranged on the top end of the outer ring of the rectangular cavity (108).

3. The electronic temperature-controlled refrigeration display cabinet without door design as claimed in claim 1, wherein the connecting block (301) is installed at the center of the top end of the second rectangular box (212), the bottom end of the second screw (304) is installed with a limiting piece, the second rotating rod (307) is rotatably installed at the upper end of the second rectangular cylinder (309) through a bearing, the second fixing block (308) is installed inside the upper end of the second rectangular cylinder (309), and the upper end of the second screw (304) is rotatably installed at the center of the second fixing block (308) through a bearing.

4. The electronic temperature controlled refrigerated display cabinet of claim 1 wherein the offset bar (314) has symmetrical retaining bars (315) mounted thereon, the rectangular sleeve bar (316) has symmetrical retaining grooves (317) formed therein, and the symmetrical retaining bars (315) can slide within the symmetrical retaining grooves (317).

5. The electronic temperature-control refrigeration display cabinet without the door design as claimed in claim 1, wherein the supporting legs are installed at the bottom end of the supporting column (321), the bottom end of the supporting legs can be in contact with the bottom end inside the rectangular cavity (108), the top end of the supporting column (321) is provided with a first rectangular cylinder (302), the outer side of the first rectangular cylinder (302) is slidably provided with a second rectangular cylinder (309), the first rectangular cylinder (302) and the second rectangular cylinder (309) are internally provided with a first fixing block (303), a second screw (304), a third gear (305), a second side gear (306), a second rotating rod (307) and a second fixing block (308), the top end of the second rectangular cylinder (309) is provided with two connecting columns (318) which are symmetrical up and down, the top end of the connecting column (318) at the top layer is fixedly connected with a rectangular sleeve rod (316), the bottom end of the connecting column (318) at the top layer is provided with a third hinge seat (319), the third hinge seat (319) is hinged with a fourth hinge seat (320), and the bottom end of the fourth hinge seat (318) is fixedly connected with the connecting column (316) at the bottom layer.