CN212280616U

CN212280616U - Combined detachable chair leg

Info

Publication number: CN212280616U
Application number: CN202020925865.XU
Authority: CN
Inventors: 李晨欢
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-05
Anticipated expiration: 2030-05-27

Abstract

The combined type disassembly and assembly chair leg comprises a middle disc seat and five single-leg connecting seats which are connected in the circumferential direction of the middle disc seat and are uniformly distributed circumferentially, wherein an avoiding inclined plane and a first matching inclined plane which are sequentially connected from outside to inside are arranged on the upper surface of each single-leg connecting seat, five single-leg assembly single legs which are in one-to-one correspondence with the single-leg connecting seats are arranged, a second matching inclined plane is arranged on the inner side wall of the upper side of one end, close to the middle disc seat, of each single-leg connecting seat and one end, close to the single-leg connecting seats, of each single-leg assembly single leg, an inner axial locking structure which can limit the overturning assembly single leg to excessively move towards the middle disc seat along the axial direction of the single-leg connecting seat when the overturning assembly single leg is upwards overturned to enable the first matching inclined plane to be matched with the second matching inclined plane is arranged between one end, close to the middle disc seat, of each single-leg connecting seat, on the lower surface of each single- Axial unsmooth locking structure.

Description

Combined detachable chair leg

Technical Field

The utility model belongs to the technical field of swivel chair accessory, especially, relate to a modular dismouting chair foot.

Background

The chair foot is an important accessory in the chair.

In the field of swivel chairs, a pentagonal chair foot is a conventional structure comprising a central disc seat and five single feet connected to the periphery of the central disc seat.

It has whole injection moulding common chair foot, also has well dish seat and single foot and can dismantle connected mode, in order can be convenient for transport in order to reduce the cost of transportation, at present, but the mode of more chair foot its adoption well dish seat and single foot split, because two parts can pack alone and transport, further improved space utilization.

Although the prior detachable chair leg has the advantages, the chair leg has the following disadvantages: the single-pin connecting seat of the single pin and the single-pin connecting seat of the central disk seat are mutually sleeved by the same axial lead and are finally locked by screws, and the position alignment of the screws and the threaded holes is realized by means of tools in the mode, so that the assembling efficiency is low and the operation is complex.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problems and provides a combined detachable chair leg which can solve the technical problems.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the combined type disassembly and assembly chair leg comprises a middle disc seat and five single-leg connecting seats which are connected with the periphery of the middle disc seat and are uniformly distributed on the circumference, wherein an avoidance inclined plane and a matching inclined plane I which are sequentially connected from outside to inside are arranged on the upper surface of each single-leg connecting seat, the combined type disassembly and assembly chair leg further comprises five turnover assembly single legs which are in one-to-one correspondence with the single-leg connecting seats, a matching inclined plane II is arranged on the inner side wall of the upper side of one end, close to the single-leg connecting seat, of each turnover assembly single leg, the avoidance inclined plane and the matching inclined plane II form an included angle smaller than 90 degrees when the turnover assembly single legs are sleeved on the single-leg connecting seats, an inner axial locking structure which can limit the turnover assembly single legs to excessively move towards the middle disc seat along the axial direction of the single-leg connecting seat when the turnover assembly single legs are upwards turned to enable the matching inclined plane I to be matched with, an outer axial concave-convex locking structure used for preventing the overturning assembly single foot from being separated outwards along the axial direction of the single-foot connecting seat is arranged between one end of the lower surface of each single-foot connecting seat, which is far away from the middle disk seat, and the lower side edge of the overturning assembly single foot.

In the combined type detachable chair leg, the lower surface of the single-leg connecting seat is provided with a first matching surface, the inner wall of the lower side of one end, close to the central disc seat, of the turnover assembly single leg is provided with a second matching surface, and the first matching surface and the second matching surface are matched with each other after the turnover assembly single leg is assembled in place.

In the above-mentioned combined detachable chair leg, the inner axial locking structure includes a first inner locking inclined surface disposed at an upper side of the end of the single-leg connecting seat near the central disk seat, the first inner locking inclined surface is inclined outwards from top to bottom, and a first upper locking inclined surface matched with the first inner locking inclined surface is disposed at an upper side of the end of the turnover assembly single leg near the single-leg connecting seat.

In the above-mentioned combined type detachable chair leg, the inner axial locking structure further includes a first side locking inclined plane disposed on both sides of one end of the single-leg connecting seat near the central disk seat, the two first side locking inclined planes are distributed in a splayed shape, the first inner locking inclined plane and the first side locking inclined plane are connected to form a U-shaped locking inclined plane, and a second side locking inclined plane matched with the first side locking inclined plane one by one is disposed on both sides of one end of the turnover assembly single leg near the single-leg connecting seat.

In the above-mentioned combined type disassembly and assembly chair leg, the lower surface of the single-leg connecting seat near the end of the middle disc seat is provided with the inverted-U-shaped outer convex surface, the inner end surface of the lower side edge of the inverted-assembly single leg is provided with the inverted-U-shaped inner concave surface matched with the inverted-U-shaped outer convex surface, and a gap is reserved between the inverted-U-shaped outer convex surface and the inverted-U-shaped inner concave surface after the inverted-assembly single leg is assembled in place. The width of the outer convex surface of the n-shaped shape is larger than that of the inner concave surface of the n-shaped shape, so that the radial mutual displacement of the single-pin connecting seat and the turnover assembly single pin can be prevented.

In the above-mentioned combined type chair leg for assembly and disassembly, the turnover assembly single leg comprises a metal forming part with an inverted U-shaped transverse section, a caster connecting cylinder is arranged at the outer end of the metal forming part and is welded with the caster connecting cylinder, and a metal plate for sealing the U-shaped opening of the metal forming part, two side edges of the metal plate are welded with two side walls of the metal forming part, and the metal plate and the caster connecting cylinder are distributed at intervals or are welded with each other; the length of the metal plate is shorter than that of the metal forming part, and one end, away from the caster connecting cylinder, of the metal plate and the metal forming part form a directional mounting notch.

In the combined type disassembly and assembly chair leg, two vertical outer side surfaces of the single-leg connecting seat are matched with two opposite vertical inner side surfaces of the inner wall of the turnover assembly single leg; the radial mutual displacement of the single-pin connecting seat and the turnover assembly single pin can be prevented.

The lower surface of the middle disc seat is provided with a plurality of first weight-reducing blind holes which are uniformly distributed in the circumferential direction, one end of the lower surface of each single-pin connecting seat, which is close to the middle disc seat, is provided with at least one second weight-reducing blind hole, and the avoiding inclined surface is provided with at least one third weight-reducing blind hole.

The middle disc seat and the single-pin connecting seat are integrally formed through injection molding. Such as PA material, etc.

The first matching inclined plane is an inclined plane or an inclined arc-shaped convex surface, and the second matching inclined plane is an inclined plane or an inclined arc-shaped concave surface matched with the first matching inclined plane in a matched mode.

In the above-mentioned combination formula dismouting chair foot, outer axial unsmooth locking structure including set up the lower locking arch of keeping away from well disk seat one end at monopod connecting seat lower surface, be equipped with the locking hole at the lower extreme inner of upset equipment monopod, and after upset equipment monopod upwards targets in place the lower locking arch insert in the locking hole, the protruding circumference of locking one side near well disk seat is equipped with L shape buckling surface down, and after upset equipment monopod upwards targets in place the L shape buckling surface lock is on the pore wall that the locking hole is close to well disk seat one side, the lower locking arch keeps away from one side of well disk seat and the locking hole keeps away from the dodging space of the upset business turn over of lower locking arch one side of well disk seat.

In the combined detachable chair leg, the locking hole is a conical hole, the diameter of the locking hole is gradually reduced from top to bottom, and the L-shaped buckling surface is buckled on the inclined hole wall and the upper hole opening of the locking hole after the turnover assembly single leg is turned upwards to the right position; the locking hole is any one of a square taper hole and a round taper hole, the transverse section of the lower locking bulge is any one of a square shape and a round shape, and the aperture of the locking hole is larger than the outer diameter of the lower locking bulge;

small gaps are reserved on two sides of the lower locking protrusion and two sides of the locking hole, and the gaps are communicated with the avoiding space to form a U-shaped space;

the lower orifice of the locking hole is connected with a lower conical barrel, the axis of the locking hole coincides with the axis of the lower conical barrel, the hole wall of the locking hole is flush with the inner wall of the lower conical barrel, the lower locking protrusion extends into the lower conical barrel, and the L-shaped locking surface is simultaneously locked on the inner walls of the locking hole and the lower conical barrel, which are close to one side of the central disc seat.

As another scheme, in the above assembled and disassembled chair leg, the outer axial concave-convex locking structure includes a locking hole disposed at the lower surface of the single-leg connecting seat and far away from one end of the central disc seat, a lower locking protrusion protruding upward is disposed at the inner end of the lower side edge of the single leg in the flip assembly, the lower locking protrusion is inserted into the locking hole after the single leg in the flip assembly is flipped upward to the right position, an L-shaped fastening surface is disposed at one side of the lower locking protrusion circumferentially near the central disc seat, the L-shaped fastening surface is fastened to the hole wall of the locking hole at one side near the central disc seat after the single leg in the flip assembly is flipped upward to the right position, and an avoiding space for the lower locking protrusion to be flipped to enter and exit is reserved at one side of the lower locking protrusion far away from the central disc seat and at one side of the.

Compared with the prior art, the combined type detachable chair leg has the advantages that:

the axial fixation of single foot can be realized to interior axial locking structure and outer axial unsmooth locking structure to and satisfy the requirement of bearing.

It is unsmooth cooperation locking for outer axial unsmooth locking structure, simultaneously, this kind of structure has very good bearing performance, can prevent that the chair foot from taking place to drop and so on phenomenon because the lower chair foot that leads to of junction structural strength when the bearing, secondly, it can simplify the assembling process with this kind of structure and mode, can also promote the packaging efficiency simultaneously, it is nimble more convenient to use, need not to realize the equipment with the help of the instrument and dismantles, design more rationally and more humanized.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of a combined detachable chair leg provided by the present invention.

Fig. 2 is a schematic view of the top view of the assembled chair leg.

Fig. 3 is a schematic diagram of an explosion structure provided by the present invention.

Fig. 4 is a schematic view of the assembled chair leg in a bottom view.

Fig. 5 is a schematic view of another perspective explosion structure provided by the present invention.

Fig. 6 is a schematic sectional view taken along line a-a in fig. 2.

Fig. 7 is an enlarged schematic view of a portion a in fig. 6.

Fig. 8 is an enlarged schematic view of B in fig. 6.

Fig. 9 is an enlarged schematic view of the structure at C in fig. 4.

Fig. 10 is a schematic view of a single-pin structure provided by the present invention.

Fig. 11 is a schematic view of an assembled state provided by the present invention.

In the figure, a middle disc seat 1, a weight-reducing blind hole I10, a single-pin connecting seat 2, an avoiding inclined surface 20, a matching inclined surface I21, a matching surface I22, an inner locking inclined surface I23, a side locking inclined surface I24, a reversed-V-shaped outer convex surface 25, a vertical outer side surface 26, a weight-reducing blind hole II 27, a weight-reducing blind hole III 28, a lower conical cylinder 280, a lower locking bulge 29, an L-shaped buckling surface 290, a reversed-assembled single pin 3, a metal forming part 3a, a caster connecting cylinder 3b, a metal plate 3c, a directional mounting notch 3d, a matching inclined surface II 30, a matching surface II 31, an upper locking inclined surface I32, a side locking inclined surface II 33, a reversed-V-shaped inner concave surface 34, a vertical inner side surface 35, a locking hole 37, an avoiding space a.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and fig. 2, the combined detachable chair leg includes a central seat 1 and five single-leg connecting seats 2 uniformly distributed circumferentially and connected to the peripheral of the central seat 1, and further, the central seat 1 and the single-leg connecting seats 2 of the present embodiment are integrally formed by injection molding. Such as PA material, etc.

Secondly, as shown in fig. 4 and 5, a plurality of circumferentially and uniformly distributed first weight-reducing blind holes 10 are formed in the lower surface of the central disc seat 1, and at least one second weight-reducing blind hole 27 is formed in one end, close to the central disc seat 1, of the lower surface of each single-pin connecting seat 2. The weight-reduced blind hole can save materials and reduce the manufacturing cost.

As shown in fig. 3 and 6, an avoidance inclined surface 20 and a matching inclined surface one 21 which are connected in sequence from outside to inside are arranged on the upper surface of each single-pin connecting seat 2, and at least one weight-reducing blind hole three 28 is arranged on the avoidance inclined surface 20.

As shown in fig. 5 and 6, the foldable connecting device further comprises five turnover assembly single legs 3 corresponding to the single-leg connecting seats 2 one by one, and a second matching inclined plane 30 is arranged on the inner wall of the upper side of one end, close to the single-leg connecting seat 2, of the turnover assembly single leg 3, and when the turnover assembly single leg 3 is sleeved on the single-leg connecting seat 2, the avoiding inclined plane 20 and the second matching inclined plane 30 form an included angle smaller than 90 degrees. The assembly structure and the mode of this embodiment are different from the prior art, 2 toper seats of monopod connecting seat, and simultaneously, upset equipment monopod 3 is toper tube-shape monopod, and this embodiment adopts the mode of cup jointing each other and the axial lead of both does not coincide when emboliaing, and when upset equipment monopod 3 installed in place the back, 3 axial leads of upset equipment monopod and the axial lead coincidence of monopod connecting seat 2 this moment.

As shown in fig. 3 and 5-9, an inner axial locking structure is arranged between one end of each single-pin connecting seat 2 close to the central disc seat 1 and one end of each turnover assembly single pin 3 close to the single-pin connecting seat 2, and can limit the turnover assembly single pin 3 to excessively move towards the central disc seat 1 side along the axial direction of the single-pin connecting seat 2 when the turnover assembly single pin 3 turns upwards to enable the first matching inclined surface 21 to be matched with the second matching inclined surface 30, the inner axial locking structure can realize the positioning of the inner end surface of the turnover assembly single pin 3 and ensure the accuracy and consistency of the position, and an outer axial concave-convex locking structure for preventing the turnover assembly single pin 3 from outwards breaking away along the axial direction of the single-pin connecting seat 2 is arranged between one end of the lower surface of each single-pin connecting seat 2 far away from the central disc seat 1 and the lower side of the turnover. It is unsmooth cooperation locking for outer axial unsmooth locking structure, simultaneously, this kind of structure has very good bearing performance, can prevent that the chair foot from taking place to drop and so on phenomenon because the lower chair foot that leads to of junction structural strength when the bearing, secondly, it can simplify the assembling process with this kind of structure and mode, can also promote the packaging efficiency simultaneously, it is nimble more convenient to use, need not to realize the equipment with the help of the instrument and dismantles, design more rationally and more humanized.

The lower surface of the single-pin connecting seat 2 is provided with a first matching surface 22, the inner wall of the lower side of one end, close to the central disc seat 1, of the turnover assembly single pin 3 is provided with a second matching surface 31, and the first matching surface and the second matching surface are matched with each other after the turnover assembly single pin 3 is assembled in place. The matching surface is matched with the inclined surface in a matched mode, so that the phenomenon that the single foot 3 and the single foot connecting seat 2 are not easy to loosen in the vertical direction after being sleeved can be achieved.

Secondly, the first matching inclined surface 21 and the first matching surface 22 form an included angle I smaller than 90 degrees. The first matching surface 22 is an inclined surface and the inclined direction is consistent with the inclined direction of the avoidance inclined surface 20, so that the processing and the manufacturing are convenient.

Specifically, the inner axial locking structure of the embodiment includes an inner locking inclined plane one 23 disposed on the upper side of the end of the single-pin connecting seat 2 close to the central disk seat 1, the inner locking inclined plane one 23 is an arc inner locking inclined plane one 23, the inner locking inclined plane one 23 is inclined from top to bottom, and an upper locking inclined plane one 32 matched with the inner locking inclined plane one 23 is disposed on the upper side of the end of the turnover assembly single pin 3 close to the single-pin connecting seat 2. Preferably, the inner axial locking structure further comprises a first side locking inclined plane 24 arranged on two sides of one end of the single-pin connecting seat 2 close to the central disc seat 1, the two first side locking inclined planes 24 are distributed in a splayed shape, the first inner locking inclined plane 23 and the first side locking inclined plane 24 are connected to form a U-shaped locking inclined plane, and a second side locking inclined plane 33 matched with the first side locking inclined plane 24 one by one is arranged on two sides of one end of the turnover assembly single pin 3 close to the single-pin connecting seat 2.

Carry out the location locking through three direction, can ensure the accuracy after upset equipment monopod 3 and monopod connecting seat 2 pair to and can prevent that upset equipment monopod 3 relative monopod connecting seat 2 from taking place radial rocking phenomenon.

In addition, be close to the outer convex surface 25 of well dish seat 1 one end lower surface at monopod connecting seat 2 and be equipped with several fonts, the terminal surface is equipped with in the lower side of upset equipment monopod 3 with the interior concave surface 34 of several fonts that several fonts outer convex surface 25 suits, after upset equipment monopod 3 equipment targets in place several fonts outer convex surface 25 and several fonts interior concave surface 34 between leave clearance b, clearance b can play the elastic deformation who is used for between the mutual part when the chair foot bearing to stop the noise that contact between the mutual part leads to and the directional equipment of the earlier stage of being convenient for. The width of the n-shaped outer convex surface 25 is larger than that of the n-shaped inner concave surface 34, so that the radial mutual displacement of the single-pin connecting seat 2 and the overturning assembly single pin 3 can be prevented.

Specifically, as shown in fig. 10, the flip-assembly monopod 3 of the present embodiment includes a metal forming member 3a having an inverted U-shaped transverse cross section, the metal forming member 3a is made by bending a metal plate, a caster connecting cylinder 3b is provided at an outer end of the metal forming member 3a, and the metal forming member 3a and the caster connecting cylinder 3b are welded to each other, and a metal plate 3c for closing a U-shaped opening of the metal forming member 3a, two side edges of the metal plate 3c are welded to two side walls of the metal forming member 3a, and the metal plate 3c and the caster connecting cylinder 3b are spaced apart from each other or are welded to each other; the length of the metal plate 3c is shorter than the length of the metal molding 3a and an end of the metal plate 3c remote from the caster connecting tube 3b and the metal molding 3a form a directional mounting notch 3 d. It is located the downside all the time when directional installation breach 3d assembles, can play directional effect, does benefit to further promotion packaging efficiency.

Secondly, two vertical outer side surfaces 26 of the single-pin connecting seat 2 are matched with two opposite vertical inner side surfaces 35 of the inner wall of the turnover assembly single pin 3. The structure is matched with the inclined plane in a cooperated mode, and can restrain the radial direction of the turnover assembly single foot 3, so that the subsequent assembly firmness and stability can be improved.

The vertical outer side surface 26 is positioned on one side of the single-pin connecting seat 2 close to the central disc seat.

In addition, the first mating inclined plane 21 of the present embodiment is an inclined arc convex surface, and the second mating inclined plane 30 is an inclined arc concave surface matched with the first mating inclined plane 21 in a matching manner. The radial mutual displacement of the single-pin connecting seat 2 and the turnover assembly single pin 3 can be prevented.

Specifically, the outer axial concave-convex locking structure of the embodiment includes a lower locking protrusion 29 disposed on the lower surface of the single-pin connecting seat 2 and far away from one end of the central disk seat 1, a locking hole 37 is disposed at the inner end of the lower side edge of the flip-assembly single pin 3, and after the flip-assembly single pin 3 is flipped upward to a proper position, the lower locking protrusion 29 is inserted into the locking hole 37, an L-shaped fastening surface 290 is disposed on one side of the lower locking protrusion 29 circumferentially near the central disk seat 1, and after the flip-assembly single pin 3 is flipped upward to a proper position, the L-shaped fastening surface 290 is fastened on the hole wall of the locking hole 37 near one side of the central disk seat 1, and an avoiding space a for the lower locking protrusion 29 to be flipped in and out is left on one side of the lower locking protrusion 29 far away from the central disk seat 1 and on one side of the locking. The escape space a prevents the lower locking projection 29 from contacting the locking hole 37 when it is turned in and out to affect the assembling or disassembling work.

Further, the locking hole 37 of the present embodiment is a tapered hole, the diameter of the locking hole 37 gradually decreases from top to bottom, and the L-shaped fastening surface 290 is fastened to the inclined hole wall and the upper opening of the locking hole 37 after the flip-assembly single leg 3 is flipped upward to a proper position; the locking hole 37 is a square taper hole, the transverse section of the lower locking protrusion 29 is square, and the diameter of the locking hole is larger than the outer diameter of the lower locking protrusion 29; the square structure enlarges the buckling contact area between the two to further improve the buckling connection strength of the connection part.

Small gaps are reserved on two sides of the lower locking protrusion 29 and two sides of the locking hole 37, and the gaps are communicated with the avoiding space a to form a U-shaped space; this design facilitates the entrance and exit of the lower locking projection 29 to improve the efficiency of the mounting and dismounting.

The lower opening of the locking hole 37 is connected with a lower conical barrel 280, the axis of the locking hole 37 is coincident with the axis of the lower conical barrel 280, the hole wall of the locking hole 37 is flush with the inner wall of the lower conical barrel 280, the lower locking protrusion 29 extends into the lower conical barrel 280, and the L-shaped buckling surface 290 is buckled on the inner walls of the locking hole 37 and the lower conical barrel 280 close to the side of the central disk seat 1.

The lower tapered cartridge 280 is formed by stamping to improve the production process efficiency.

Next, the upper opening of the locking hole 37 has an arc chamfer, and the L-shaped engaging surface 290 is engaged with the locking hole 37, the inner wall of the lower tapered barrel 280 on the side close to the center seat 1, and the arc chamfer.

As shown in fig. 7, the L-shaped engaging surface 290 has an arc-shaped engaging concave surface matching the arc-shaped chamfer and an inclined engaging surface matching the inner wall of the locking hole 37 and the inner wall of the lower tapered tube 280, so that the engaging tightness between the two surfaces can be further improved to improve the connection strength at the engaging portion.

As shown in fig. 11, the assembly method of the present embodiment includes the steps of:

s1, aligning the inner end of the turnover assembly single pin 3 with the single pin connecting seat 2;

s2, the single-foot connecting seat 2 is sleeved with the turnover assembly single foot 3, the inverted V-shaped inner concave surface 34 and the inverted V-shaped outer convex surface 25 are abutted together, and the avoiding inclined surface 20 and the matching inclined surface II 30 form an included angle smaller than 5-30 degrees;

s3, the single foot 3 is turned and assembled upwards, when the first matching surface and the second matching surface are matched with each other, the first inner locking inclined surface 23 is matched with the first upper locking inclined surface 32, and the first side locking inclined surface 24 is matched with the second side locking inclined surface 33, the inner end of the single foot 3 is assembled in place, meanwhile, the lower locking protrusion 29 enters the locking hole 37 at the moment, and the L-shaped buckling surface 290 is buckled on the hole wall and the upper hole opening of the locking hole 37, which are close to one side of the middle disc seat 1, namely, the single foot is assembled in place.

When the disassembly is carried out, the outer end of the turnover assembly single foot 3 is overhead, then downward pressure is applied, and at the moment, the turnover assembly single foot 3 can be forced to be separated from the single foot connecting seat 2, so that the disassembly is completed.

Example two

The working principle and structure of the embodiment are basically the same as those of the first embodiment, and the different structures are as follows: the outer axial concave-convex locking structure comprises a locking hole 37 arranged at one end, far away from the central disc seat 1, of the lower surface of the single-pin connecting seat 2, a lower locking protrusion 29 protruding upwards is arranged at the inner end of the lower side edge of the turnover assembly single pin 3, the lower locking protrusion 29 is inserted into the locking hole 37 after the turnover assembly single pin 3 turns upwards to be in place, an L-shaped buckling surface 290 is arranged on one side, close to the central disc seat 1, of the lower locking protrusion 29 in the circumferential direction, the L-shaped buckling surface 290 is buckled on the hole wall of one side, close to the central disc seat 1, of the locking hole 37 after the turnover assembly single pin 3 turns upwards to be in place, and an avoiding space a for the lower locking protrusion 29 to turn in and out is reserved on one side, far away from the central disc seat 1, of the lower locking protrusion 29 and one side, far away from the. The position of the lower locking projection 29 of the embodiment is changed over with that of the first embodiment (not shown in the figure), and similarly, the locking hole 37 is also changed over (not shown in the figure), so that the use requirement can be met.

EXAMPLE III

The working principle and structure of the embodiment are basically the same as those of the first embodiment, and the different structures are as follows: the first mating inclined plane 21 of the present embodiment is an inclined plane, and the second mating inclined plane 30 is an inclined plane matched with the first mating inclined plane 21 in a matching manner.

Example four

The working principle and structure of the embodiment are basically the same as those of the first embodiment, and the different structures are as follows: the locking hole 37 is a circular taper hole, the transverse section of the lower locking protrusion 29 is circular, and the diameter of the locking hole is larger than the outer diameter of the lower locking protrusion 29.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Combined type dismounting chair leg comprises a middle disc seat (1) and five single-leg connecting seats (2) which are uniformly distributed on the circumference of the middle disc seat (1) in a circumferential manner, and is characterized in that an avoidance inclined plane (20) and a first matching inclined plane (21) which are sequentially connected from outside to inside are arranged on the upper surface of each single-leg connecting seat (2), the combined type dismounting chair leg further comprises five turnover assembly single legs (3) which are in one-to-one correspondence with the single-leg connecting seats (2) and a second matching inclined plane (30) is arranged on the inner wall of the upper side of one end, close to the single-leg connecting seat (2), of each turnover assembly single leg (3), when the turnover assembly single legs (3) are sleeved on the single-leg connecting seats (2), the avoidance inclined plane (20) and the second matching inclined plane (30) form an included angle smaller than 90 degrees, and a space between one end, close to the middle disc seat (1), of each single-leg connecting seat (2) and one end, close to the single-leg connecting seat (2), of each (21) When the turnover assembly single foot is matched with the second matching inclined plane (30), the inner axial locking structure capable of limiting the turnover assembly single foot (3) to move towards the side of the middle disc seat (1) along the axial direction of the single foot connecting seat (2) is arranged, and an outer axial concave-convex locking structure used for preventing the turnover assembly single foot (3) from axially and outwards breaking away from the middle disc seat (1) is arranged between one end of the lower surface of each single foot connecting seat (2) away from the lower side edge of the turnover assembly single foot (3).

2. The combined detachable chair leg as claimed in claim 1, wherein the lower surface of the single leg connecting seat (2) is provided with a first matching surface (22), the inner wall of the lower side of the end of the flip-assembly single leg (3) close to the central disc seat (1) is provided with a second matching surface (31), and the first matching surface and the second matching surface are matched with each other when the flip-assembly single leg (3) is assembled in place.

3. The combined detachable chair leg as claimed in claim 1, wherein the inner axial locking structure comprises a first inner locking inclined surface (23) disposed at an upper side of one end of the single leg connecting seat (2) close to the center plate seat (1), the first inner locking inclined surface (23) is inclined outwards from top to bottom, and a first upper locking inclined surface (32) matched with the first inner locking inclined surface (23) is disposed at an upper side of one end of the flip-assembly single leg (3) close to the single leg connecting seat (2).

4. The combined detachable chair leg as claimed in claim 3, wherein the inner axial locking structure further comprises a first side locking inclined plane (24) disposed at both sides of one end of the single-leg connecting seat (2) close to the center plate seat (1), the first side locking inclined planes (24) are distributed in a splayed shape, the first inner locking inclined plane (23) and the first side locking inclined plane (24) are connected to form a U-shaped locking inclined plane, and a second side locking inclined plane (33) matched with the first side locking inclined plane (24) is disposed at both sides of one end of the flip-assembly single-leg (3) close to the single-leg connecting seat (2).

5. The combined type assembly and disassembly chair foot as claimed in claim 3 or 4, wherein the lower surface of one end of the single foot connecting seat (2) close to the central disk seat (1) is provided with a reversed-V-shaped outer convex surface (25), the inner end surface of the lower side edge of the reversed assembly single foot (3) is provided with a reversed-V-shaped inner concave surface (34) matched with the reversed-V-shaped outer convex surface (25), and a gap (b) is reserved between the reversed-assembly single foot (3) and the reversed-V-shaped inner concave surface (34).

6. The combined chair leg for assembly and disassembly as claimed in claim 1, wherein the flip-assembly single leg (3) comprises a metal forming member (3a) with an inverted U-shaped cross section, a caster connecting cylinder (3b) is provided at the outer end of the metal forming member (3a) and the caster connecting cylinder (3b) are welded together, and a metal plate (3c) for closing the U-shaped opening of the metal forming member (3a), two side edges of the metal plate (3c) are welded together with two side walls of the metal forming member (3a), and the metal plate (3c) and the caster connecting cylinder (3b) are distributed at intervals or are welded together; the length of the metal plate (3c) is shorter than the length of the metal molding (3a) and an end of the metal plate (3c) remote from the caster connecting tube (3b) and the metal molding (3a) form a directional mounting notch (3 d).

7. The combined disassembly and assembly chair leg as claimed in claim 1, wherein two vertical outer side surfaces (26) of the single-leg connecting seat (2) are matched with two opposite vertical inner side surfaces (35) of the inner wall of the turnover assembly single leg (3);

the lower surface of the middle disc seat (1) is provided with a plurality of first weight-reducing blind holes (10) which are uniformly distributed in the circumferential direction, one end of the lower surface of each single-pin connecting seat (2) close to the middle disc seat (1) is provided with at least one second weight-reducing blind hole (27), and the avoidance inclined plane (20) is provided with at least one third weight-reducing blind hole (28);

the middle disc seat (1) and the single-pin connecting seat (2) are integrally formed through injection molding.

8. The combined type chair leg for assembly and disassembly as claimed in claim 1, wherein the outer axial concave-convex locking structure comprises a lower locking protrusion (29) arranged at one end of the lower surface of the single-leg connecting seat (2) far away from the central disc seat (1), a locking hole (37) is formed in the inner end of the lower side edge of the turnover assembly single leg (3), the lower locking protrusion (29) is inserted into the locking hole (37) after the turnover assembly single leg (3) is turned upwards to the right position, an L-shaped buckling surface (290) is arranged on one side of the lower locking protrusion (29) close to the central disc seat (1) in the circumferential direction, the L-shaped buckling surface (290) is buckled on the hole wall of the locking hole (37) close to the central disc seat (1) and the upper hole opening after the turnover assembly single leg (3) is turned upwards to the right position, and an avoiding space (a) for the turnover of the lower locking protrusion (29) to enter and exit is reserved on one side of the locking hole (29) far away from the central disc seat (1).

9. The combined detachable chair leg as claimed in claim 8, wherein the locking hole (37) is a tapered hole, the diameter of the locking hole (37) is gradually reduced from top to bottom, and the L-shaped fastening surface (290) is fastened to the inclined hole wall and the upper opening of the locking hole (37) when the flip-up assembly single leg (3) is flipped up to the right position; the locking hole (37) is any one of a square taper hole and a round taper hole, the transverse section of the lower locking bulge (29) is any one of a square and a round, and the aperture of the locking hole is larger than the outer diameter of the lower locking bulge (29);

micro gaps are reserved on two sides of the lower locking protrusion (29) and two sides of the locking hole (37), and the gaps are communicated with the avoiding space (a) to form a U-shaped space;

the lower opening of the locking hole (37) is connected with a lower conical barrel (280), the axis of the locking hole (37) is overlapped with the axis of the lower conical barrel (280), the hole wall of the locking hole (37) is flush with the inner wall of the lower conical barrel (280), the lower locking protrusion (29) extends into the lower conical barrel (280), and the L-shaped buckling surface (290) is buckled on the inner wall of one side, close to the central disc seat (1), of the locking hole (37) and the lower conical barrel (280) at the same time.

10. The combined type chair leg for assembly and disassembly as claimed in claim 1, wherein the outer axial concave-convex locking structure comprises a locking hole (37) formed in one end of the lower surface of the single-leg connecting seat (2) far away from the central disc seat (1), a lower locking protrusion (29) protruding upwards is arranged at the inner end of the lower side edge of the turnover assembly single leg (3), the lower locking protrusion (29) is inserted into the locking hole (37) after the turnover assembly single leg (3) is turned upwards to the right position, an L-shaped buckling surface (290) is arranged on one side of the lower locking protrusion (29) close to the central disc seat (1) in the circumferential direction, the L-shaped buckling surface (290) is buckled on the hole wall of one side of the locking hole (37) close to the central disc seat (1) after the turnover assembly single leg (3) is turned upwards to the right position, and an avoiding space (a) for the lower locking protrusion (29) to turn over is reserved on one side of the lower locking protrusion (29) far away from the central disc seat (1) and one side of the locking hole (37) far away from the central.