CN216534569U - Chair leg dismounting structure - Google Patents

Abstract

The utility model discloses a chair leg dismounting structure which comprises a connecting base body, wherein a hollow part which is hollow up and down is arranged at the center of the connecting base body, and the connecting base body comprises splicing parts which are arranged at intervals along the circumferential direction of the connecting base body; the chair leg unit is configured to be detachably connected with the splicing part; an installation groove penetrating through the hollow part is arranged on the end surface of each splicing part; the chair leg unit is correspondingly provided with an insertion block, and the insertion block comprises a root part and a head part; and a circle of bearing inner ring extending towards the central direction of the connecting base body is arranged in the hollow part; the insert block can be inserted into the mounting groove, and the head of the insert block is exposed above the bearing inner ring; the central clamping piece is configured to be clamped in the hollow-out part of the connecting base body; the head of each inserting block is respectively in up-and-down inserting fit with the corresponding position of the central clamping piece while the central clamping piece is clamped in the hollow part; simple to operate and stable in structure.

Description

Chair leg dismounting structure

Technical Field

The utility model relates to the field of seats, in particular to a chair leg dismounting structure.

Background

In order to meet the trend of commercialization under the current power-off situation, products sold on line need to be distributed to customers through logistics, so that the transportation cost of the products is increased, and higher benefits are brought to companies and manufacturers by facilitating packaging and transportation and reducing the cost of packaging and transportation. The chair feet of most of the existing office chairs are in a five-claw shape and mainly comprise a base and five support legs which uniformly extend outwards along the periphery of the base, and most of the five-claw chairs are of an integral structure or are large or heavy, and the chair feet are integral and cannot be detached; when the chair legs are packaged and transported, the whole chair legs need to be packaged, the carrying is very inconvenient in the storage and transportation process, the occupied space is large, large storage and transportation resources are consumed, and the storage and transportation cost is increased. In order to facilitate transportation, the size of the chair legs is reduced, and more detachable chair legs are designed on the market at present, namely, a center seat and a single leg of the chair legs can be detached and are separately packaged during transportation, and the single leg is fixed on the center seat through connecting pieces such as screws during assembly. Although the structure for realizing the disassembly and assembly of the chair leg through the screw has a plurality of advantages, the disassembly and assembly of the chair leg also has a plurality of defects, for example, the screw fixation needs tools such as a screwdriver, so that the assembly and the disassembly are not very convenient; and during connection, the hole positions also need to be accurately aligned and then installed in connection, which results in inconvenient operation.

Moreover, most of the prior detachable chair legs are designed only by considering the problem of convenient disassembly and assembly, and the main connection mode adopts a direct plug-in type structure or a rotary buckling structure; although the quick assembly and disassembly of the chair are convenient for users, the user needs to fix each chair foot in sequence, and the connection is not quick. And the structure strength of the joint is not always considered, the joint is easy to fall off in the using and carrying processes, the use experience is influenced, and serious and even potential safety hazards exist.

201520047333.X Chinese Utility model discloses a "detachable chair leg", which comprises a central part and support legs, wherein the central part is provided with a central hole, the central part is provided with a plurality of slots for mounting the support legs along an axial center circumference array, the slots are internally provided with buckling limiting parts, the connecting ends of the support legs and the central part are provided with buckling strips, the buckling strips are provided with buckling tongues for buckling with the buckling limiting parts, the buckling limiting parts and the buckling tongues are buckled, one side of the buckling limiting parts, which is buckled with the buckling surfaces, is a buckling surface, the connecting ends of the support legs and the central part also comprise a circular shaft protrusion, the circular shaft protrusion is positioned at the lower end of the buckling strips, the end parts of the circular shaft protrusion are arc surfaces, the slots of the central part are provided with limiting ports, the limiting ports are matched with the connecting parts in shape, a rotating shaft groove is arranged below the buckling limiting parts of the slots of the central part, the inner surface of the rotating shaft groove is an arc surface, the arc surface is matched with the arc of the circular shaft protrusion, the defect that the stress points of the support legs and the central part are positioned on the buckling tongues, the supporting strength is poor. In view of the above problems, a chair leg assembling and disassembling structure with easy assembling and disassembling and high strength after connection is needed.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a chair leg dismounting structure with simple structure and high connection strength; during assembly, each chair foot unit is firstly inserted into the connecting base body, and then the central clamping piece is clamped in the hollow part of the connecting base body; the central clamping piece can be simultaneously in inserted fit with each chair foot unit, so that the chair foot units and the connecting base are relatively fixed; the structure is simple and reliable, and the installation is very convenient and fast; in addition, when the assembled chair leg is stressed, the center clamping piece, the connecting base body and the chair leg unit are mutually extruded up and down, so that the center clamping piece is clamped with the connecting base body more firmly, and the center clamping piece is spliced with the chair leg unit more tightly; thereby make the connection between the three more firm, the security is better.

The technical scheme of the utility model is realized as follows:

a chair leg dismounting structure comprising: the connecting base body is provided with a hollow part which is hollow up and down in the center position, and the connecting base body comprises splicing parts which are uniformly arranged at intervals along the circumferential direction of the connecting base body; the chair leg unit is configured to be detachably connected with the splicing part; the number of the chair leg units is the same as that of the splicing parts; an installation groove penetrating through the hollow part is arranged on the end face of each splicing part far away from the center direction of the connecting base body; the end part of the chair leg unit is correspondingly provided with an inserting block, and the inserting block comprises a root part and a head part; a circle of bearing inner ring extending towards the center direction of the connecting base body is arranged in the hollow part; the insert block can be inserted into the mounting groove, and the head of the insert block is exposed above the bearing inner ring; the center clamping piece is configured to be embedded and installed in the hollow-out part of the connecting base body along the vertical direction; the central clamping piece is clamped and matched with the connecting base body; one of the central clamping piece or the connecting base body is provided with a spring buckle, and the other of the central clamping piece or the connecting base body is correspondingly provided with a bayonet; and the head of each insertion block is respectively in up-and-down inserting fit with the corresponding position of the central clamping piece while the central clamping piece is clamped in the hollow part.

Preferably, one of the head part of the insertion block or the central clamping piece is provided with a vertical insertion vertical plate, and the other one of the head part of the insertion block or the central clamping piece is correspondingly provided with an insertion groove which can be in insertion fit with the insertion vertical plate. The central clamping piece is clamped in the connecting base body, and the limiting vertical plate is vertically inserted into the insertion groove; thereby being capable of restricting the chair foot unit from being separated from the connection base body outwards.

Preferably, the head of the inserting block is provided with an L-shaped limiting hook, the limiting hook comprises a supporting plate horizontally extending towards the center direction of the connecting base body, and the inserting vertical plate is arranged at the front end of the supporting plate and extends upwards; the inserting groove is correspondingly arranged on the central clamping piece, and the opening of the inserting groove faces downwards.

Preferably, the center clip comprises an annular clip base enclosure at the upper part; after the central clamping piece is embedded into the hollow part, the clamping base enclosure body is positioned above the bearing inner ring, and the clamping base enclosure body is vertically abutted against the bearing inner ring; the inserting grooves are arranged at the bottom of the clamping base surrounding body at intervals along the circumferential direction. The clamping base surrounding body is vertically abutted with the bearing inner ring, so that the head of the insertion block is clamped between the bearing inner ring and the clamping base surrounding body; the up-and-down movement of the insertion block can be further limited, so that the connection is stable.

Preferably, a position corresponding to the mounting groove at the upper end of the bearing inner ring is provided with a limiting groove which is sunken downwards; the head of the insert block is embedded in the limiting groove; the width of the limiting groove is matched with the width of the head of the inserting block. After the head of the insert block is embedded into the limiting groove, the insert block can be further limited to move left and right, and the inserting structure is stable.

Preferably, the elastic buckles are arranged on the outer side of the clamping base surrounding body at intervals along the circumferential direction, and are arranged vertically downwards; a space is arranged between the lower end of the elastic buckle and the clamping base surrounding body, so that the elastic buckle can elastically deform along the radial direction of the central clamping piece; the bayonet is correspondingly arranged on the inner wall of the hollow part along the circumferential direction.

Preferably, each elastic buckle is arranged between two adjacent insertion grooves; the bayonet socket sets up in the handing-over department of bearing inner ring and fretwork portion inner wall, and every bayonet socket sets up between two adjacent mounting grooves. The bayonet is arranged between two adjacent mounting grooves in a reasonable layout; arranging the elastic buckle between two adjacent inserting grooves; thereby make the mutual noninterference influence between the structure, when center fastener and connection base member joint, center fastener still pegs graft with chair foot unit.

Preferably, the upper end of the central clamping piece is provided with an upper cover plate, and the shape and the size of the outer contour of the upper cover plate are matched with those of the notch contour of the hollow part at the upper end of the connecting base body. Thereby make central fastener embedding install in connecting the base member after, the upper cover plate will be in the same place with the up end concatenation of connecting the base member, and the upper cover plate can seal fretwork portion upper portion for central fastener forms a whole with connecting the base member, hides the connection vestige.

Preferably, the shape of the notch of the hollow part at the upper end of the connecting base body is configured to be a polygon; the shape of the upper cover plate is correspondingly configured into a polygonal structure; in the chair leg packaging state, the central clamping piece is placed in the hollow part, and the upper cover plate is lapped on the upper end surface of the connecting base body; the central clamping piece and the connecting base body are integrally packaged and transported. The upper cover plate and the upper end notch of the hollow part are arranged in a polygonal shape, so that the upper cover plate can be overlapped and placed at the upper end of the connecting base body; therefore, when in packaging, the central clamping piece can be placed in the connecting base body, but the central clamping piece and the connecting base body are not clamped together; so that the two can be packaged together; the packaging volume can be further reduced; the design is ingenious.

Preferably, the central clamping piece comprises a longitudinal connecting upright post, and the clamping base surrounding body is arranged on the outer surface of the upper part of the connecting upright post in a surrounding manner; and a chair rod mounting hole which penetrates up and down is arranged at the center of the center clamping piece. Then the central fastener joint is back in connecting the base, the chair pole mounting hole just can be used for connecting the chair pole of seat for central fastener can enough be used for fixed chair foot unit, can also regard as the fitting piece of connecting seat chair pole, and design benefit kills two birds with one stone.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

firstly, when the chair leg dismounting structure is assembled, each chair leg unit is firstly inserted into the connecting base body, and then the center clamping piece is clamped in the hollow-out part of the connecting base body; the central clamping piece can be simultaneously matched with each chair leg unit in an up-and-down inserting manner, so that the chair leg units and the connecting base are relatively fixed; simple structure is reliable, and the cooperation of pegging graft with the chair foot unit when center fastener and chair foot main part joint, design benefit, and the installation is very convenient and fast.

Analysis from the perspective of structural forces: when the chair leg is assembled and used, the chair rod mounting hole at the center of the central clamping piece is used for connecting the chair rod of the chair, so that when the chair leg supports the chair, the central clamping piece is subjected to a vertically downward acting force, and the central clamping piece cannot be separated from the connecting base body; the chair leg unit is contacted with the ground, and the chair leg unit can simultaneously receive the vertical upward reaction force of the ground; therefore, the center clamping piece, the connecting base body and the chair foot unit are mutually extruded up and down, the larger the seat load is, the larger the extrusion force among the center clamping piece, the connecting base body and the chair foot unit is, the tighter the splicing between the splicing vertical plate and the splicing groove is, and the root of the splicing block and the upper wall of the mounting groove are mutually extruded, so that the connection is tighter; thereby the connection among the center clamping piece, the connection base body and the chair foot unit is firmer. Make the structural stability of back chair foot of equipment directly proportional between the load that the chair foot bore, can guarantee the joint strength and the support strength of chair foot, factor of safety is higher.

And secondly, an upper cover plate is arranged at the upper end of the central clamping piece, and the shape and the size of the outline of the upper cover plate are matched with those of the outline of the notch of the hollow part at the upper end of the connecting base body. After the central clamping piece is embedded and installed in the connecting base body, the upper cover plate is spliced with the upper end face of the connecting base body, and the upper cover plate can seal the notch at the upper end of the hollow part, so that the central clamping piece and the connecting base body form a whole to hide connecting traces; the notch at the upper end of the hollow part and the cover plate are arranged in a polygonal shape (such as a pentagon), so that the upper cover plate can rotate by a certain angle and is overlapped and placed at the upper end of the connecting base body in a packaging state, the central clamping piece and the connecting base body can be packaged together, and the central clamping piece and the connecting base body cannot be clamped together; the packaging volume can be further reduced, and the transportation cost is saved.

Drawings

FIG. 1 is a perspective view of the chair leg of the present invention after being assembled;

FIG. 2 is an exploded view of the chair leg assembly in an embodiment of the present invention;

FIG. 3 is a schematic perspective view of the chair leg unit and the connecting base after being inserted;

FIG. 4 is a schematic perspective view of the chair leg unit and the connection base in the embodiment of the utility model;

FIG. 5 is a schematic perspective view of a center clip according to an embodiment of the present invention;

FIG. 6 is a side sectional view of the chair foot of the present invention after being assembled in the embodiment;

FIG. 7 is a schematic bottom perspective view of the assembled chair leg according to the embodiment of the present invention;

FIG. 8 is a schematic perspective view of a connection base according to an embodiment of the present invention;

FIG. 9 is a schematic perspective view of a connecting base and a center clip for packaging in accordance with an embodiment of the present invention;

fig. 10 is a schematic perspective view of the connecting base and the center clip in a packaged state according to the embodiment of the utility model.

The figures are numbered: a connection base 1; a chair leg unit 2; a center clip member 3; connecting the upright posts 3 a; clamping the base enclosing body 3 b; a chair rod mounting hole 3 c; a hollowed-out portion A; a splice 4; a mounting groove 5; an insert block 6; a root portion 6 a; a head portion 6 b; supporting the inner ring 7; a spring buckle 8; a bayonet 9; a limit hook 10; a support plate 10 a; a vertical plate 10b is inserted; a limiting groove 11; a plug-in groove 12; an upper cover plate 13; a suspension loop 13 a; a card slot 14.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more than one unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific embodiment of the utility model is as follows:

as shown in fig. 1-10, the present invention first provides a chair leg dismounting structure, which comprises a connecting base 1, a chair leg unit 2 and a central clip member 3; the central position department of connecting base member 1 be equipped with hollow portion A of fretwork from top to bottom, and connect base member 1 and include splice 4 that sets up along its circumferential direction even interval, splice 4 is connected base member 1 and is outwards stretched out relatively. The chair leg units 2 are detachably connected with the splicing parts 4, and the number of the chair leg units 2 is the same as that of the splicing parts 4; in this embodiment, the chair leg structure is specifically a general five-pointed star-shaped chair leg, so the number of the chair leg units 2 and the number of the splicing parts 4 are all five. An installation groove 5 penetrating through the hollow part A is formed in the end face, away from the center direction of the connecting base body 1, of each splicing part 4, and an insertion block 6 is correspondingly arranged at the end part of the chair leg unit 2, wherein each insertion block 6 comprises a root part 6a and a head part 6 b; a circle of bearing inner ring 7 extending towards the central direction of the connecting base body is arranged in the hollow part A; when the chair leg unit 2 is assembled with the connecting base body 1, the inserting block 6 is inserted into the mounting groove 6, the root part 6a of the inserting block 6 is embedded into the mounting groove 5, and the head part 6b of the inserting block 6 is exposed above the bearing inner ring 7; the central clamping piece 3 is configured to be embedded and installed in the hollow part A of the connecting base body 1 along the vertical direction; the central clamping piece 3 is in clamping fit with the connecting base body 1; be equipped with the bullet on one of them of central fastener 3 or connection base member 1 and detain 8, be equipped with bayonet socket 9 on central fastener 3 or the corresponding another of connecting base member 1, then need not through screwed connection, it is more convenient to connect. And when the central clamping piece 3 is clamped in the hollow part A, the head 6b of each insertion block 6 is respectively in up-and-down inserting fit with the corresponding position of the central clamping piece 3, so that the central clamping piece 3 can limit and fix the chair leg unit 2. During assembly, each chair foot unit 2 is inserted into the connecting base body 1, and then the central clamping piece 3 is clamped in the hollow part A of the connecting base body 1; the central clamping piece 3 can simultaneously fix each chair leg unit 2; simple structure is reliable, and the installation is very convenient and fast.

As shown in fig. 1-5 and 8, the center clip member 3 includes a longitudinal connecting pillar 3a and a clip base enclosure 3b disposed around an upper outer surface of the connecting pillar 3 a; and still be equipped with the chair pole mounting hole 3c that runs through from top to bottom in the center department of center fastener 3, then 3 joints of center fastener are in connecting base member 1 back, chair pole mounting hole 3c just can be used for connecting the chair pole of seat for center fastener 3 can enough be used for fixed chair foot unit 2, can also regard as the fitting piece of connecting seat chair pole, and design benefit kills two birds with one stone. The height of the central clamping piece 3 is matched with that of the hollow part A in the connecting base body 1; after the central clamping piece 3 is clamped in the hollow part A, the clamping base enclosure body 3b is positioned above the bearing inner ring 7 and is abutted up and down, the connecting upright post 3a is continuously penetrated in the bearing inner ring 7 downwards from the lower end of the clamping base enclosure body 3b, and the bottom of the connecting upright post 3a is flush with the bottom of the connecting base body 1; therefore, the central clamping piece 3 can be filled in the hollow part A, and after the central clamping piece 3 is combined with the connecting base body 1, the two parts can be regarded as a whole, so that the integrity is good.

As shown in fig. 3-7, the head 6b of the insertion block 6 has an L-shaped limiting hook 10, and the limiting hook 10 includes a supporting plate 10a extending horizontally toward the center of the connection base 1 and an upright plate 10b disposed at the end of the supporting plate 10a and extending upward. The shape and size of the root 6a of the insert block 6 are matched with the shape and size of the mounting groove 5, and the length of the root 6a of the insert block 6 is matched with the depth of the mounting groove 5; thereby make when the inserted block 6 inserts mounting groove 5, the root 6a of inserted block 6 will combine closely with mounting groove 5 to make chair foot unit 2 be connected closely with concatenation portion 4, make the root a of inserted block 6 can not rock in mounting groove 5. As shown in fig. 3 and 4, a downward-recessed limiting groove 11 is formed in a position corresponding to the mounting groove 5 at the upper end of the inner bearing ring 7, after the insertion block 6 is inserted, the head 6b of the insertion block 6 is just embedded into the limiting groove 11, and the width of the limiting groove 11 is matched with the width of the support plate 10a, so that after the head 6b of the insertion block 6 is embedded into the limiting groove 11, the limiting groove 11 can further limit the insertion block 6 to move left and right, and further limit the chair leg unit 2.

As shown in fig. 2 to 8, after each leg unit 2 is inserted into the connecting base 1, the vertical insertion plates 10b at the end of each leg unit 2 are spaced apart from each other along the circumferential direction of the inner support ring 7. As shown in fig. 5, correspondingly, the clamping base enclosure 3b is provided with insertion grooves 12 capable of being inserted into the insertion vertical plates 10b at intervals along the circumferential direction, and an opening of the insertion groove 12 is located at the bottom of the clamping base enclosure 3 b. Therefore, when the central clamping piece 3 is embedded and installed in the hollow part A, the plug vertical plate 10b of the head part 6b of each plug block 6 is in plug fit with the plug groove 12 at the corresponding position of the clamping base surrounding body 3 b. After the vertical inserting plate 10b is vertically inserted and matched with the inserting groove 12, the central clamping piece 3 can limit the chair leg unit 2 to be separated from the connecting base body 1 outwards. Further, after the central clamping piece 3 is clamped in the hollow part A, the clamping base enclosing body 3b is positioned above the bearing inner ring 7, and the clamping base enclosing body and the bearing inner ring are in vertical butt joint; the supporting plate 10a of the head 6b of the inserting block 6 is embedded in the limiting groove 11 of the bearing inner ring 7, and the inserting vertical plate 10b of the head 6b of the inserting block 6 is inserted in the inserting groove 12 of the clamping base enclosing body 3 b; so that the head 6b of the insert 6 will be clamped and limited between the inner bearing ring 7 and the clamping base enclosure 3b, thereby limiting the up-and-down deviation of the insert 6. In summary, after the central clip member 3 is clamped in the connecting base 1 and is in inserting fit with the chair leg unit 2, the central clip member 3 can limit the chair leg unit 2 to be separated from the connecting base 1 and limit the chair leg unit 2 to be deviated in the left-right and up-down directions; the chair leg unit 2 and the connecting base 1 are relatively fixed and tightly combined.

As shown in fig. 3-6, the elastic buckles 8 are also arranged at intervals along the circumferential direction at the outer side of the clamping base enclosure 3b, the elastic buckles 8 are arranged vertically downward, and an interval is formed between the lower ends of the elastic buckles 8 and the clamping base enclosure 3b, so that the elastic buckles 8 can be elastically deformed along the radial direction of the central clamping piece 3; and each snap 8 is arranged just between two adjacent insertion grooves 12. The bayonets 9 are correspondingly arranged on the inner wall of the hollow part A at intervals along the circumferential direction, and the bayonets 9 are arranged at the joint of the bearing inner ring 7 and the inner wall of the hollow part A; each bayonet 9 is arranged between two adjacent mounting grooves 5. After the central clamping piece 3 is completely embedded in the hollow part A, the elastic buckles 8 are just clamped in the bayonets 9 at the corresponding positions. Therefore, the connection is very convenient and fast, screws are not needed, and the assembly can be completed only by downwards clamping the central clamping piece 3 into the connecting base body 1. The structure layout is reasonable, and the bayonets 9 are arranged between two adjacent mounting grooves 5 in the connecting base body 1; arranging the elastic buckle 8 between two adjacent inserting grooves 12 of the clamping base enclosure body 3 b; therefore, the structures are not interfered mutually, and the structure is regular and convenient to process; the center clamping piece 3 is clamped with the connecting base body 1, and meanwhile, the center clamping piece 3 is inserted into the chair foot unit 2.

Furthermore, as shown in fig. 1 and 2, an upper cover plate 13 is disposed at the upper end of the center clip 3, and the shape and size of the outer contour of the upper cover plate 13 are matched with the shape and size of the notch at the upper end of the connecting base 1 of the hollow part a. Thereby make central fastener 3 embedding install in connecting base member 1 back, upper cover plate 13 will be in the same place with the up end concatenation of connecting base member 1, and upper cover plate 13 can seal fretwork portion A upper portion for central fastener 3 forms a whole with connecting base member 1, hides the connection vestige, pleasing to the eye outward appearance.

Particularly, by adopting the chair leg dismounting structure, the chair leg units 2 and the connecting base body 1 can be fixed simultaneously through the central clamping piece 3, the mounting steps are simplified, and the assembly, the disassembly and the assembly are convenient. And after the assembly, the three parts are tightly connected, the connecting structure is hidden inside, and the structure is attractive. The key points are as follows: when the chair leg is assembled and used, the chair rod mounting hole 3c at the center of the central clamping piece 3 is used for connecting the chair rod of the chair, so that when the chair leg supports the chair, the central clamping piece 3 is subjected to vertical downward acting force, and the central clamping piece 3 cannot be separated from the connecting base body 1; furthermore, the chair leg unit 2 is contacted with the ground, and the chair leg unit 2 can simultaneously receive the vertical upward reaction force of the ground; therefore, the center clamping piece 3, the connecting base 1 and the chair foot unit 2 are mutually extruded up and down, the larger the load of the chair is, the larger the extrusion force among the three is, the tighter the splicing between the splicing vertical plate 10b and the splicing groove 12 is, and the root 6a of the splicing block 6 and the upper wall of the mounting groove 5 are mutually extruded, so that the connection is tighter; thereby the connection among the center clamping piece 3, the connection base 1 and the chair foot unit 2 is firmer. Then, the structural stability of the assembled chair legs is in direct proportion to the load borne by the chair legs, so that the connection strength and the support strength of the chair legs can be ensured, and the safety coefficient is higher.

As shown in FIGS. 9-10, with the chair leg dismounting structure of the present invention, the chair leg has a packing state and a use state; in a packaging state, the chair leg unit 2 and the connecting base body 1 are disassembled and packaged; in a use state, the chair foot unit 2 is spliced with the connecting base body 1, and then the central clamping piece 3 is clamped in the hollow-out part A so that the chair foot unit 2 and the connecting base body 1 are relatively fixed. Therefore, the chair legs can be disassembled and packed when being packed, and the packing volume is saved; when the device is used, the device can be quickly assembled through the central clamping piece, and is convenient for a user to install by himself.

Further, the following steps are carried out: the notch shape of the hollow part A at the upper end of the connecting base body 1 is set to be a polygonal structure, in particular a pentagon; correspondingly, an upper cover plate 13 at the upper end of the center clamping piece 3 is arranged to be a pentagonal structure matched with the upper cover plate; in a use state, the upper cover plate 13 can be embedded into the upper end of the hollow part A and close the notch at the upper end of the hollow part A; and the notch at the upper end of the hollow part A is of a pentagonal structure, so that the central clamping piece 3 and the connecting base body 1 can be conveniently positioned when being installed, and the elastic buckle 8 is aligned to the bayonet 9. The key points are as follows: in a packaging state, as shown in fig. 10, the center clip 3 can be embedded and placed in the hollow part a, but the center clip 3 and the connecting base 1 are not clamped together; the method specifically comprises the following steps: the upper cover plate 13 can rotate a certain angle and is placed on the upper end face of the connecting base body 1, and five corners of the upper cover plate 13 are respectively lapped on the upper end of the connecting base body 1; the purpose of this placement is: the central clamping piece 3 is embedded in the hollow part A of the chair leg unit 2, so that the central clamping piece 3 and the connecting base body 1 can be integrally packaged and transported, and the packaging volume is saved; and the placing mode makes the two not blocked together, and the central clamping piece 3 can be taken out from the chair foot unit 2 at any time. In addition, each corner of the upper cover plate 13 is respectively provided with a hanging lug 13a protruding downwards, the upper end surface of the connecting base body 1 is correspondingly provided with a clamping groove 14, the notch at the upper end of the hollow part A is provided with five corner grooves, and each clamping groove 14 is arranged in the middle position of two connected corner grooves; thereby make under the packing state, upper cover plate 13 overlap joint on the up end of connecting base member 1, and hangers 13a joint is in draw-in groove 14, can restrict upper cover plate 13 and connect base member 1 rotatory relatively, the rotatory condition that leads to the joint auto-lock that appears when avoiding both to transport together. In this packaged state, a wrapping band (not shown) is provided around the outer surfaces of the center clip 3 and the connection base 1. The two can be further stably stacked without position deviation. So that the chair leg unit 2 is integrally packed in a packed state; the central clamping piece 3 and the connecting base body 1 can be packed and transported together, and the two are stacked up and down, so that the packing volume is small, and the transportation cost is further saved; the structure design is ingenious.

Claims (10)

1. A chair leg dismounting structure is characterized by comprising:

the connecting base body is provided with a hollow part which is hollow up and down in the center position, and the connecting base body comprises splicing parts which are uniformly arranged at intervals along the circumferential direction of the connecting base body;

the chair leg unit is configured to be detachably connected with the splicing part; the number of the chair leg units is the same as that of the splicing parts; an installation groove penetrating through the hollow part is arranged on the end face of each splicing part far away from the center direction of the connecting base body; the end part of the chair leg unit is correspondingly provided with an inserting block, and the inserting block comprises a root part and a head part; a circle of bearing inner ring extending towards the center direction of the connecting base body is arranged in the hollow part; the insert block can be inserted into the mounting groove, and the head of the insert block is exposed above the bearing inner ring;

the center clamping piece is configured to be embedded and installed in the hollow-out part of the connecting base body along the vertical direction; the central clamping piece is clamped and matched with the connecting base body; one of the central clamping piece or the connecting base body is provided with a spring buckle, and the other of the central clamping piece or the connecting base body is correspondingly provided with a bayonet; and the head of each insertion block is respectively in up-and-down inserting fit with the corresponding position of the central clamping piece while the central clamping piece is clamped in the hollow part.

2. The chair leg dismounting structure according to claim 1, characterized in that: one of the head part of the insertion block or the central clamping piece is provided with a vertical insertion vertical plate, and the other of the head part of the insertion block or the central clamping piece is correspondingly provided with an insertion groove which can be in insertion fit with the insertion vertical plate.

3. The chair leg disassembly and assembly structure of claim 2, wherein: the head of the inserting block is provided with an L-shaped limiting hook, the limiting hook comprises a supporting plate which horizontally extends towards the center direction of the connecting base body, and the inserting vertical plate is arranged at the front end of the supporting plate and extends upwards; the inserting groove is correspondingly arranged on the central clamping piece, and the opening of the inserting groove faces downwards.

4. The chair foot attaching and detaching structure according to claim 2 or 3, characterized in that: the central clamping piece comprises an annular clamping base enclosing body positioned at the upper part; after the central clamping piece is embedded into the hollow part, the clamping base enclosure body is positioned above the bearing inner ring, and the clamping base enclosure body is vertically abutted against the bearing inner ring; the inserting grooves are arranged at the bottom of the clamping base surrounding body at intervals along the circumferential direction.

5. The chair leg disassembly and assembly structure of claim 1, wherein: a limiting groove which is sunken downwards is arranged at the position, corresponding to the mounting groove, of the upper end of the bearing inner ring; the head of the insert block is embedded in the limiting groove; the width of the limiting groove is matched with the width of the head of the inserting block.

6. The chair leg dismounting structure according to claim 4, characterized in that: the elastic buckles are arranged on the outer side of the clamping base surrounding body at intervals along the circumferential direction and are arranged vertically downwards; a space is arranged between the lower end of the elastic buckle and the clamping base surrounding body, so that the elastic buckle can elastically deform along the radial direction of the central clamping piece; the bayonet is correspondingly arranged on the inner wall of the hollow part along the circumferential direction.

7. The chair leg disassembly and assembly structure of claim 6, wherein: each elastic buckle is arranged between two adjacent inserting grooves; the bayonet socket sets up in the handing-over department of bearing inner ring and fretwork portion inner wall, and every bayonet socket sets up between two adjacent mounting grooves.

8. The chair leg disassembly and assembly structure of claim 1, wherein: the upper end of the central clamping piece is provided with an upper cover plate, and the shape and the size of the outline of the upper cover plate are matched with those of the outline of the notch of the hollow part at the upper end of the connecting base body.

9. The chair leg disassembly and assembly structure of claim 8, wherein: the notch of the hollow part positioned at the upper end of the connecting base body is configured into a polygon; the shape of the upper cover plate is correspondingly configured into a polygonal structure; in the chair leg packaging state, the central clamping piece is placed in the hollow part, and the upper cover plate is lapped on the upper end surface of the connecting base body; the central clamping piece and the connecting base body are integrally packaged and transported.

10. The chair leg disassembly and assembly structure of claim 4, wherein: the central clamping piece comprises a longitudinal connecting upright post, and the clamping base surrounding body is arranged on the outer surface of the upper part of the connecting upright post in a surrounding manner; and a chair rod mounting hole which penetrates up and down is arranged at the center of the center clamping piece.

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