CN111588256A

CN111588256A - Adjustable clothes hanger

Info

Publication number: CN111588256A
Application number: CN202010422813.5A
Authority: CN
Inventors: 黄利杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-08-28

Abstract

The invention discloses an adjustable clothes hanger, which relates to the technical field of clothes hangers and comprises a fixing box, wherein a transverse adjusting mechanism is fixedly installed inside the fixing box, a supporting arm adjusting mechanism is fixedly installed at the bottom of the fixing box, swing arm rods are fixedly hinged to the left end and the right end of the transverse adjusting mechanism, and a first hinge seat is fixedly hinged to the bottom end of each swing arm rod. This adjustable clothes hanger, clockwise turning couple, distance between two swing arm pole lower extremes shortens, thereby the less clothes of better adaptation shoulder width supports the use, it rotates clockwise to drive the lead screw through clockwise turning plate, increase the distance between two swing arm pole bottoms, the support length that makes this support becomes long, the better uses the great clothes of shoulder width, carry out length and inclination's regulation through swing arm adjustment mechanism to the swing arm pole of different positions, the better clothes that are suitable for different uses, the adaptability of this clothes hanger has been improved.

Description

Adjustable clothes hanger

Technical Field

The invention relates to the technical field of clothes hangers, in particular to an adjustable clothes hanger.

Background

Clothes hangers, as daily household articles for people, have become necessities of life of many families nowadays, in order to prevent clothes crease in the wardrobe, clothes hangers are adopted to hang clothes, or clothes hangers are used when clothes are aired, the clothes hangers are usually directly formed by adopting plastic and metal materials, in use and use, the sizes of the produced clothes hangers are fixed, when the clothes with different shoulder widths and sizes are required to be supported, the clothes hangers with different specifications are required to be distinguished for use, and the applicability is poor.

In life, the clothes sizes of adults and children are different, and the shoulder widths of clothes of people with different thicknesses are different, so that when the clothes hangers with fixed sizes are used for airing or hanging the clothes, the width and the gradient of the clothes hangers are difficult to adjust, the clothes hangers are difficult to correspondingly adjust according to the shoulder widths of the clothes, particularly when western-style clothes are hung, the clothes hangers are difficult to adapt to the shoulder angles and lengths, and are easy to deform and wrinkle when hung, and the adjustment and the applicability are poor.

Disclosure of Invention

The invention aims to make up for the defects of the prior art, and provides an adjustable clothes hanger which has the advantages of good adjustment and applicability and solves the problem of poor adjustment and applicability.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides an adjustable clothes hanger, includes fixed box, the inside fixed mounting of fixed box has horizontal adjusting mechanism, the bottom fixed mounting of fixed box has the arm supporting adjustment mechanism, horizontal adjusting mechanism's the equal fixed hinge in both ends has the swing arm pole about, every the bottom of swing arm pole is all fixed hinge has articulated seat one, two a side that articulated seat one is close to each other is fixed mounting respectively has the horizontal pole and inserts a section of thick bamboo.

The transverse adjusting mechanism comprises a guide ring, a connecting block, slide rail grooves, a toothed ring, a fixed base plate, transverse moving plates, a support column, a positioning groove, a guide hole, a bottom groove, a cavity and a spring, wherein the cavity is formed in the center inside the fixed box, the slide rail grooves are formed in the front side and the rear side inside the fixed box, the middle parts of the two slide rail grooves are communicated with the cavity, the bottom groove is formed below the inside of the fixed box, the bottom groove is communicated with the cavity through the guide hole, the guide ring is fixedly embedded in the middle part of the upper surface of the fixed box, the support column is arranged above the fixed box, the bottom end of the support column sequentially penetrates through the guide ring, the cavity and the guide hole and extends into the bottom groove, the toothed ring is fixedly arranged on the outer surface of the support column inside the cavity, the transverse moving plates are respectively arranged in the two slide rail grooves, and tooth grooves which are arranged on one side surface of, and the toothed ring is meshed with the two groups of toothed grooves respectively, the connecting blocks are fixedly installed on one side face, far away from the two transverse moving plates, of each transverse moving plate respectively, and the outer side face of each connecting block is fixedly provided with a second hinge seat.

Two articulated seat two is respectively through the fixed hinge in the top of round pin axle with two swing arm poles, fixed bolster fixed mounting is in the inside below of kerve, the surface fixed mounting that the pillar is located the inside of kerve has solid fixed ring, gu fixed ring's last fixed surface installs two symmetrical locating pins, the constant head tank is annular array sets up the inside at the kerve roof, and two locating pins all insert the inside of constant head tank.

The supporting arm adjusting mechanism comprises a third hinging seat, a first supporting rod, a second supporting rod, a wire tube, a supporting rod, a sliding chute, a bearing, a fourth hinging seat, a sliding block, a guide block, a screw rod and a rotating plate, wherein the bearing is fixedly arranged on the bottom surface of the fixed base plate, the top end of the screw rod is fixedly arranged at the inner ring of the bearing, the wire tube is in threaded connection with the outer surface of the screw rod, the supporting rod is respectively and fixedly arranged at the left side and the right side of the outer surface of the wire tube, the fourth hinging seat is fixedly arranged at the left side and the right side of the bottom end of the fixed box, the second supporting rod is respectively and fixedly hinged inside the fourth hinging seat through a pin shaft, the sliding chutes are respectively arranged inside the second two supporting rods, the sliding block is respectively and fixedly connected inside the two sliding chutes, one ends of the two supporting rods, which, every the guide rail has all been seted up to the bottom surface of swing arm pole, the guide block joint is in the inside of two guide rails respectively, articulated seat three is fixed mounting respectively in the bottom surface of every guide block, and two articulated seats three are fixed articulated through the top of round pin axle with two branch poles one respectively.

Further, the right flank fixed mounting of horizontal pole has the inserted bar, the right-hand member of inserted bar extends to the inside of inserting a section of thick bamboo.

By adopting the technical scheme, the lower part of the clothes hanger is better ensured not to have an opening in the adjusting process.

Further, the spring is fixedly installed on the upper surface of the fixed base plate, the top end of the spring is in contact with the bottom surface of the fixed ring, and the spring is sleeved on the lower portion of the outer surface of the support.

Through adopting above-mentioned technical scheme, better when the regulation back is loosened the couple, will fix fixed ring and pillar through the spring and move on mutually to in the constant head tank is gone into to the locating pin card on the fixed ring, thereby avoid putting pivoted problem when using hanging.

Furthermore, a hook is fixedly installed at the top end of the support.

By adopting the technical scheme, the clothes hanger is better hung on a wardrobe or a drying rack through the hook.

Furthermore, the rotating plate is fixedly arranged on the bottom surface of the screw rod, and a gap is reserved between the bottom surface of the rotating plate and the outer surface of the inserting rod.

Through adopting above-mentioned technical scheme, better letting the operator rotate the swivel plate when needs adjust.

Further, the diameter value of the gear ring is smaller than that of the cavity.

Through adopting above-mentioned technical scheme, when avoiding the ring gear to rotate, with the problem of cavity inner wall interference.

Furthermore, a bottom hook is fixedly arranged on the bottom surface of each first hinge seat.

Through adopting above-mentioned technical scheme, better through colluding at the end to the trousers put.

Compared with the prior art, the adjustable clothes hanger has the following beneficial effects:

1. according to the invention, the transverse adjusting mechanism is arranged, when the transverse length of the clothes hanger needs to be adjusted in the use process, the hook is pressed downwards, the pillar, the toothed ring, the fixing ring and the positioning pin are driven to move downwards, so that the positioning pin gradually breaks away from the inside of the positioning groove in the downward moving process, the hook is rotated clockwise after the positioning pin is completely broken away, the toothed ring is driven to rotate clockwise, the rear transverse moving plate is driven to move towards the right side through tooth grooves in the inner sides of the transverse moving plates at two sides in the rotating process, the front transverse moving plate moves towards the left side, the upper ends of the two swing arm rods move towards two sides, and the guide block is reduced in the guide rail by the pulling force of the first support rod in the moving process, so that the distance between the lower ends of the two swing arm rods is shortened, and the clothes with smaller shoulder width can be.

2. According to the invention, through the arrangement of the supporting arm adjusting mechanism, when clothes with large shoulder width are required to be used, the screw rod is driven to rotate clockwise by rotating the rotary plate clockwise, the screw pipe is driven to move upwards in the rotating process, so that the bottom ends of the two supporting rods at two sides are pushed to rotate upwards in the moving process, the height of the top end of the supporting rod is increased, in the increasing process, the guide block is pushed to slide upwards in the guide rail, the bottom ends of the swing arm rods are pushed to rotate outwards by taking the hinging center of the hinging seat II as a circle center, the distance between the bottom ends of the two swing arm rods is increased, the supporting length of the support is lengthened, the clothes with large shoulder width can be better used, and similarly, the transverse length of the clothes hanger is continuously reduced by rotating the rotary plate anticlockwise.

3. According to the clothes hanger, the swing arm adjusting mechanism and the transverse moving mechanism are connected for use, the two transverse moving plates extend out of different lengths, the positions of the swing arm rods adjusted by the swing arm adjusting mechanism are different, the swing arm rods at different positions are adjusted in length and inclination angle by the swing arm adjusting mechanism, namely different inclinations can be adjusted under the same length, and different lengths can be adjusted under the same inclination, so that the clothes hanger is better suitable for different clothes to use, and the adaptability of the clothes hanger is improved.

4. In the process of adjusting the length and the angle, the inserting rods 6 on the bottom cross rods 7 move in the inserting cylinders 5 in a telescopic mode, so that the lower parts are better guaranteed to be not provided with openings after adjustment, socks and the like are better hung and supported, and the bottom hooks 4 on the two sides are driven to adjust the distance when the transverse length is adjusted, so that trousers are better hung, and the adjusting and using effects of the clothes hanger are improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a bottom view of the present invention;

FIG. 3 is a schematic view of the present invention;

FIG. 4 is a schematic view of the internal structure of the horizontal adjusting mechanism of the present invention;

FIG. 5 is a cross-sectional view of the retention cartridge of the present invention;

FIG. 6 is a connection diagram of the internal structure of the horizontal adjusting mechanism and the arm supporting adjusting mechanism of the present invention;

FIG. 7 is a schematic view of the arm support adjustment mechanism of the present invention;

FIG. 8 is a schematic view of the cross bar and the insert bar of the present invention;

FIG. 9 is a schematic view of the structure of the insert barrel of the present invention;

FIG. 10 is a schematic view of the positioning groove of the present invention.

In the figure: 1-fixed box, 2-transverse adjusting mechanism, 201-guide ring, 202-connecting block, 203-slide rail groove, 204-hinge seat II, 205-toothed ring, 206-toothed groove, 207-fixed backing plate, 208-positioning pin, 209-fixed ring, 210-transverse moving plate, 211-support column, 212-positioning groove, 213-guide hole, 214-bottom groove, 215-cavity, 216-spring, 3-support arm adjusting mechanism, 301-hinge seat III, 302-support rod I, 303-support rod II, 304-wire tube, 305-support rod, 306-slide groove, 307-bearing, 308-hinge seat IV, 309-slide block, 310-guide block, 311-lead screw, 312-rotary plate, 4-bottom hook, 5-insert barrel, 6-insert rod, 7-cross bar, 8-first hinged seat, 9-hook, 10-swing arm rod and 11-guide rail.

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.

Referring to fig. 1-10, the present invention provides a technical solution: the utility model provides an adjustable clothes hanger, includes fixed box 1, and the inside fixed mounting of fixed box 1 has horizontal adjusting mechanism 2, and the bottom fixed mounting of fixed box 1 has arm supporting adjustment mechanism 3, and both ends all fixed hinge have swing arm pole 10 about horizontal adjusting mechanism 2, and the bottom of every swing arm pole 10 all fixed hinge has articulated seat 8, and two articulated seats 8 a side that are close to each other fixed mounting respectively has horizontal pole 7 and inserts a section of thick bamboo 5.

The transverse adjusting mechanism 2 comprises a guide ring 201, a connecting block 202, a slide rail groove 203, a gear ring 205, a fixed backing plate 207, a transverse moving plate 210, a support column 211, a positioning groove 212, a guide hole 213, a bottom groove 214, a cavity 215 and a spring 216, wherein the cavity 215 is arranged at the center inside the fixed box 1, the slide rail grooves 203 are arranged at the front side and the rear side inside the fixed box 1, the middle parts of the two slide rail grooves 203 are communicated with the cavity 215, the bottom groove 214 is arranged below the inside of the fixed box 1, the bottom groove 214 is communicated with the cavity 215 through the guide hole 213, the guide ring 201 is fixedly embedded with the middle part of the upper surface of the fixed box 1, the support column 211 is arranged above the fixed box 1, the bottom end of the support column 211 sequentially penetrates through the guide ring 201, the cavity 215 and the guide hole 213 and extends to the inside of the bottom groove 214, the gear ring 205 is fixedly arranged on the outer surface of the support column 211 positioned inside the, tooth grooves 206 which are arranged at equal intervals are formed in one side face, close to each other, of each of the two transverse moving plates 210, the tooth rings 205 are meshed with the two groups of tooth grooves 206 respectively, the connecting blocks 202 are fixedly installed on one side face, far away from each other, of each of the two transverse moving plates 210 respectively, and the outer side face of each connecting block 202 is fixedly provided with a second hinge seat 204.

Two articulated seats 204 are respectively fixed hinged with the top ends of two swing arm rods 10 through pin shafts, fixed backing plate 207 is fixedly installed below the inside of bottom groove 214, pillar 211 is located the fixed ring 209 of the fixed surface of the inside of bottom groove 214, the fixed ring 209 is fixedly installed on the upper surface of fixed ring 209, positioning groove 212 is an annular array and is arranged on the top wall of bottom groove 214, and two positioning pins 208 are inserted into the inside of positioning groove 212.

The supporting arm adjusting mechanism 3 comprises a third hinge seat 301, a first support rod 302, a second support rod 303, a wire tube 304, a support rod 305, a sliding groove 306, a bearing 307, a fourth hinge seat 308, a sliding block 309, a guide block 310, a screw rod 311 and a rotary plate 312, wherein the bearing 307 is fixedly arranged on the bottom surface of the fixed backing plate 207, the top end of the screw rod 311 is fixedly arranged on the inner ring of the bearing 307, the wire tube 304 is in threaded connection with the outer surface of the screw rod 311, the support rod 305 is respectively and fixedly arranged on the left side and the right side of the outer surface of the wire tube 304, the fourth hinge seat 308 is fixedly arranged on the left side and the right side of the bottom end of the fixed box 1, the second support rods 303 are respectively and fixedly hinged inside the fourth hinge seat 308 through pin shafts, the sliding grooves 306 are respectively arranged inside the second support rods 303, the sliding blocks 309 are respectively clamped inside the two sliding grooves 306, the ends, which are, guide rails 11 have all been seted up to the bottom surface of every swing arm pole 10, and guide block 310 joint respectively in the inside of two guide rails 11, and three 301 articulated seats are fixed mounting respectively in the bottom surface of every guide block 310, and two three 301 articulated seats are fixed articulated through the top of round pin axle with two branch poles 302 respectively.

Furthermore, the right side surface of the cross rod 7 is fixedly provided with an inserting rod 6, the right end of the inserting rod 6 extends into the inserting cylinder 5, and the lower part of the clothes rack is better ensured not to be provided with an opening in the adjusting process.

Further, spring 216 is fixedly installed on the upper surface of fixed backing plate 207, and the top of spring 216 contacts with the bottom surface of fixed ring 209, and spring 216 cover is established in the lower part of pillar 211 surface, and better when loosening couple 9 after adjusting, will fix fixed ring 209 and pillar 211 through spring 216 and move mutually to locating pin 208 on the fixed ring 209 is gone into in the constant head tank 212, thereby avoids putting pivoted problem when using hanging.

Further, the top end of the pillar 211 is fixedly provided with a hook 9, and the clothes hanger is preferably hung on a wardrobe or a drying rack through the hook 9.

Furthermore, the rotating plate 312 is fixedly installed on the bottom surface of the screw 311, and a gap is reserved between the bottom surface of the rotating plate 312 and the outer surface of the insertion rod 6, so that an operator can rotate the rotating plate 312 when adjustment is needed.

Further, the diameter of ring 205 is smaller than the diameter of cavity 215, avoiding the problem of interference with the inner wall of cavity 215 when ring 205 is rotated.

Furthermore, a bottom hook 4 is fixedly arranged on the bottom surface of each hinged seat I8, and trousers can be better hung through the bottom hooks 4.

The working principle is as follows: when the clothes hanger is used, when the clothes are small, the hook 9 is pressed downwards to drive the strut 211, the toothed ring 205, the fixing ring 209 and the positioning pin 208 to move downwards, so that the positioning pin 208 gradually separates from the inside of the positioning groove 212 in the downward moving process, the hook 9 is rotated clockwise after being completely separated, the toothed ring 205 is driven to rotate clockwise, so that in the rotating process, the transverse moving plate 210 at the rear is driven to move towards the right side through the tooth grooves 206 at the inner sides of the transverse moving plates 210 at the two sides, the transverse moving plate 210 at the front moves towards the left side, the upper ends of the two swing arm rods 10 move towards the two sides, in the moving process, the pull force of the support rod I302 is applied to reduce the distance between the guide block 310 and the top end of the guide rail 11 in the guide rail 11, so that the distance between the lower ends of the two swing arm rods 10 is shortened, the clothes hanger is sleeved on the clothes, the screw rod 311 is driven to rotate clockwise by rotating the rotary plate 312 clockwise, the screw tube 304 is driven to move upwards in the rotating process, so that the bottom ends of the two support rods 303 at two sides are pushed to rotate upwards in the moving process, the height of the top end of the first support rod 302 is improved, in the improving process, the guide block 310 is pushed to slide upwards in the guide rail 11, the bottom ends of the swing arm rods 10 are pushed to rotate outwards by taking the hinging center of the hinging seat II 204 as the center of a circle, the distance between the bottom ends of the two swing arm rods 10 is increased, the support length of the support is lengthened, clothes with large shoulder width can be better used, the two transverse moving plates 210 extend out by different lengths, the positions of the swing arm rods 10 adjusted by the swing arm adjusting mechanism 3 are different, and the swing arm rods 10 at different positions are adjusted by the swing arm adjusting mechanism 3 in length and inclination angle, therefore, the clothes hanger is better suitable for different clothes to use, after the length and the angle are adjusted, the clothes are sleeved outside the clothes hanger, and the clothes are hung in a wardrobe through the hook 9 to be stored or aired on the clothes hanger.

In the description of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. It is noted that, herein, relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An adjustable clothes hanger, comprising a fixed box (1), characterized in that: a transverse adjusting mechanism (2) is fixedly installed inside the fixed box (1), a supporting arm adjusting mechanism (3) is fixedly installed at the bottom of the fixed box (1), swing arm rods (10) are fixedly hinged to the left end and the right end of the transverse adjusting mechanism (2), a hinge seat I (8) is fixedly hinged to the bottom end of each swing arm rod (10), and a cross rod (7) and an inserting cylinder (5) are fixedly installed on one side face, close to each other, of each hinge seat I (8) respectively;

the transverse adjusting mechanism (2) comprises a guide ring (201), a connecting block (202), a sliding rail groove (203), a gear ring (205), a fixed base plate (207), a transverse moving plate (210), a support column (211), a positioning groove (212), guide holes (213), bottom grooves (214), a cavity (215) and springs (216), wherein the cavity (215) is formed in the center of the inside of the fixed box (1), the sliding rail groove (203) is formed in the front side and the rear side of the inside of the fixed box (1), the middle parts of the two sliding rail grooves (203) are communicated with the cavity (215), the bottom groove (214) is formed in the lower part of the inside of the fixed box (1), the bottom groove (214) is communicated with the cavity (215) through the guide holes (213), the middle part of the upper surface of the fixed box (1) is fixedly embedded in the guide ring (201), the support column (211) is placed above the fixed box (1), and the bottom end of the support column (211) sequentially penetrates through the guide ring (201), The cavity (215) and the guide hole (213) extend to the inside of the bottom groove (214), the gear ring (205) is fixedly installed on the outer surface of the pillar (211) positioned in the cavity (215), the traverse plates (210) are respectively placed in the two slide rail grooves (203), one side surface of each traverse plate (210) close to each other is provided with tooth grooves (206) arranged at equal intervals, the gear ring (205) is respectively meshed with the two groups of tooth grooves (206), the connecting blocks (202) are respectively fixedly installed on one side surface of each traverse plate (210) far away from each other, and the outer side surface of each connecting block (202) is fixedly provided with a second hinge seat (204);

the two hinged seats II (204) are fixedly hinged with the top ends of the two swing arm rods (10) through pin shafts respectively, the fixed base plate (207) is fixedly installed below the inner part of the bottom groove (214), the outer surface of the pillar (211) located inside the bottom groove (214) is fixedly provided with a fixed ring (209), the upper surface of the fixed ring (209) is fixedly provided with two symmetrical positioning pins (208), the positioning grooves (212) are arranged on the inner top wall of the bottom groove (214) in an annular array, and the two positioning pins (208) are inserted into the positioning grooves (212);

the supporting arm adjusting mechanism (3) comprises a third hinged seat (301), a first hinged seat (302), a second hinged seat (303), a wire tube (304), a supporting rod (305), a sliding groove (306), a bearing (307), a fourth hinged seat (308), a sliding block (309), a guide block (310), a lead screw (311) and a rotating plate (312), wherein the bearing (307) is fixedly installed on the bottom surface of the fixed base plate (207), the top end of the lead screw (311) is fixedly installed on the inner ring of the bearing (307), the wire tube (304) is in threaded connection with the outer surface of the lead screw (311), the supporting rod (305) is respectively and fixedly installed on the left side and the right side of the outer surface of the wire tube (304), the fourth hinged seat (308) is fixedly installed on the left side and the right side of the bottom end of the fixed box (1), the second hinged seat (303) is respectively and fixedly hinged inside the fourth hinged seat (308) through a pin shaft, and the sliding groove, slider (309) joint respectively is in the inside of two spout (306), and the one end that two branches (303) kept away from each other is connected with the fixed hinge in bottom of two sliders (309) respectively, branch (302) are respectively through bolt fixed mounting in the bottom of two branches (303), every guide rail (11) have all been seted up to the bottom surface of swing arm pole (10), guide block (310) joint respectively is in the inside of two guide rails (11), articulated seat three (301) are fixed mounting respectively in the bottom surface of every guide block (310), and two articulated seats three (301) are respectively through the fixed hinge in top of round pin axle with two branches (302).

2. An adjustable garment hanger according to claim 1, wherein: the right flank fixed mounting of horizontal pole (7) has inserted bar (6), the right-hand member of inserted bar (6) extends to the inside of inserting a section of thick bamboo (5).

3. An adjustable garment hanger according to claim 1, wherein: the spring (216) is fixedly arranged on the upper surface of the fixed backing plate (207), the top end of the spring (216) is in contact with the bottom surface of the fixed ring (209), and the spring (216) is sleeved on the lower portion of the outer surface of the strut (211).

4. An adjustable garment hanger according to claim 1, wherein: and a hook (9) is fixedly arranged at the top end of the strut (211).

5. An adjustable garment hanger according to claim, wherein: the rotary plate (312) is fixedly arranged on the bottom surface of the screw rod (311), and a gap is reserved between the bottom surface of the rotary plate (312) and the outer surface of the inserted rod (6).

6. An adjustable garment hanger according to claim 1, wherein: the diameter value of the ring (205) is smaller than the diameter value of the cavity (215).

7. An adjustable garment hanger according to claim 1, wherein: and a bottom hook (4) is fixedly arranged on the bottom surface of each hinged seat I (8).