Foot stool structure of foldable chair

Abstract

The utility model discloses a foldable chair foot stool structure, and belongs to the technical field of chair production and manufacturing. The foldable chair foot stool structure further comprises a clamping seat fixedly arranged on the outer side of the telescopic pipe. Six end faces with the same size are arranged on the outer side of the clamping seat; a pair of fixing blocks is arranged on each of six corresponding outer side end surfaces of the base; a supporting rod is rotationally connected between each pair of fixing blocks; the outer side of each supporting rod is detachably connected with a pulley; a contraction control device capable of controlling the supporting rod to rotate is arranged on the outer side of the clamping base. By arranging the electric cylinder, the rack and the cylindrical tooth profile, a contraction control device formed by the electric cylinder, the rack and the cylindrical tooth profile can be used for controlling the movement of the rack by utilizing the expansion and contraction of the electric cylinder so as to control the rotation of the cylindrical tooth profile, so that the supporting rod can be stably unfolded or contracted, the stability of the chair leg is improved, and the chair leg can be folded and stored and has higher practicability.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chair production and manufacturing technical field, more specifically, relate to a seat chair foldable chair foot frame structure. BACKGROUND

[0002] At present, the chair used in daily life mainly consists of seat surface, chair foot and backrest three parts, and the chair foot is generally made of metal or alloy and the like, so that the chair is simple and beautiful and has good durability, and some merchants also install universal wheels on the chair foot to facilitate sliding of the user.

[0003] For example, a detachable chair foot and chair in patent application No. CN201910418640.7 includes a foot and a center support, the center support includes a support body and multiple mounting parts, one side of the foot is provided with a mounting groove, the mounting part is transversely embedded in the mounting groove, and the foot and the center support are provided with a fastening assembly that prevents the mounting part from transversely separating from the mounting groove; the mounting part is provided with a first limiting part, the foot is provided with a second limiting part, and at least one first limiting part is located outside the longitudinal direction of the second limiting part. The first limiting part and the second limiting part cooperate to form a longitudinal limiting structure that prevents the foot from separating from the mounting part in the longitudinal direction. The present application has the advantages of simple structure, easy disassembly and assembly, and saving transportation cost; the foot and the center support are connected stably, and both the transverse and longitudinal directions use fixed and limiting structures, so that the foot is not easy to fall off and shake; the cooperation of the sliding groove and the guide part can accurately install the second limiting part to the corresponding position, reducing the installation difficulty of the foot.

[0004] Although the above-mentioned detachable chair foot and chair can reduce the installation difficulty, it cannot be folded and stored, and the support is not stable enough. Utility model content

[0005] The utility model discloses a seat chair foldable chair foot frame structure, which can stably expand or contract the supporting rod, improve the stability of the chair foot, and be folded and stored, and is more practical.

[0006] The utility model discloses a seat chair foldable chair foot frame structure, which can stably expand or contract the supporting rod, improve the stability of the chair foot, and be folded and stored, and is more practical.

[0007] Preferably, the contraction control device comprises at least six cylindrical gear profiles, each of which is fixedly connected to the inner side of the upper end of the corresponding support rod; six end faces of the clamping seat are fixedly connected with electric cylinders respectively; the output end of each electric cylinder is fixedly connected with a rack; the racks on the same side are engaged with the cylindrical gear profiles.

[0008] Preferably, each of the support rods is fixedly connected with a pair of rotating shafts; the rotating shafts on the same side are coaxial with the corresponding cylindrical gear profiles; the rotating shafts are rotatably connected with the corresponding fixed blocks.

[0009] Preferably, the pulley is a universal wheel.

[0010] Preferably, each of the racks is slidingly connected with the clamping seat.

[0011] Preferably, each of the support rods is made of titanium alloy.

[0012] Compared with the prior art, the chair has the following beneficial effects:

[0013] (1) The contraction control device composed of the electric cylinders, the racks and the cylindrical gear profiles can control the movement of the racks by the extension and contraction of the electric cylinders, thereby controlling the rotation of the cylindrical gear profiles, so that the support rods can be stably expanded or contracted, the stability of the chair legs is improved, the chair legs can be folded and stored, and the chair legs are more practical.

[0014] (2) The pulley is arranged to improve the convenience of moving the seat, and the seat can slide, thereby improving the comfort of the seat.

[0015] (3) The clamping seat is arranged to stably fix the electric cylinders and provide support for the sliding of the racks, so that the adjustment process is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the support rod structure of the utility model.

[0018] Explanation of reference numerals in the drawing: 10, base; 11, support rod; 12, pulley; 13, cylindrical gear profile; 14, rack; 15, fixed block; 16, electric cylinder; 17, clamping seat; 18, telescopic pipe; 19, rotating shaft. DETAILED DESCRIPTION

[0019] Specific embodiment one: please refer to Figures 1-2The utility model provides a kind of seat foldable chair foot frame structure, including base 10;The upper end of the base 10 is fixedly connected telescopic pipe 18;It further includes fixedly arranged in telescopic pipe 18 outside card seat 17;The outer side of the card seat 17 has six equal end faces;The base 10 is respectively provided with a pair of fixed blocks 15 at the corresponding six outer side end faces;Each pair of the fixed blocks 15 is rotatably connected with support rod 11;Each support rod 11 is detachably connected with pulley 12 outside;The outer side of the card seat 17 is provided with retracting control device capable of controlling the rotation of support rod 11;By setting motorized cylinder 16, rack 14, cylindrical gear profile 13, the retracting control device formed by it can control the rotation of cylindrical gear profile 13 by the telescopic control rack 14 of motorized cylinder 16, so that support rod 11 can be stably unfolded or retracted, improve the stability of chair foot, can be folded and stored, more practical.

[0020] Please refer to Figures 1-2 The retracting control device at least includes cylindrical gear profile 13;The number of the cylindrical gear profile 13 is six;Each cylindrical gear profile 13 is fixedly connected with the inner side upper end of corresponding support rod 11;The six end faces of the outer side of the card seat 17 are respectively fixedly connected with motorized cylinder 16;The output end of each motorized cylinder 16 is fixedly connected with rack 14;The rack 14 and cylindrical gear profile 13 on the same side are engaged;By setting pulley 12, the convenience of seat movement is improved, and the seat can slide, improve the comfort of seat.

[0021] Please refer to Figure 2 The upper end of each support rod 11 is fixedly connected with a pair of rotating shafts 19;A pair of rotating shafts 19 are coaxial with the cylindrical gear profile 13 on the same side;A pair of rotating shafts 19 are rotatably connected with corresponding fixed blocks 15.

[0022] Please refer to Figure 1 The pulley 12 is universal wheel.

[0023] Please refer to Figure 1 Each rack 14 is slidably connected with card seat 17.Each support rod 11 is made of titanium alloy material;By setting card seat 17, card seat 17 can stably fix motorized cylinder 16, and simultaneously provide support for the sliding of rack 14, so that the adjustment process is more stable.

[0024] In work, the output end of the electric cylinder 16 is received in the inside of the cylinder body, the output end of the electric cylinder 16 drives the rack 14 to move the cylindrical gear profile 13, so that the lower end surface of the support rod 11 is in a horizontal state, and the seat can be stably supported; Because the support rod 11 is provided with a pulley 12, the pulley 12 can increase the convenience of the seat movement; When the seat is not used, the seat is folded and stored, at this time the chair leg part of the chair is stored, that is, the folding storage of the support rod 11 saves space; Start the electric cylinder 16, the output end of the electric cylinder 16 drives the rack 14 to move downward, the rack 14 moves downward to push the cylindrical gear profile 13 to rotate clockwise, because the cylindrical gear profile 13 and the rotating shaft 19 are coaxial, so that the support rod 11 can also rotate, and is folded on the upper side of the base 10, and the folding storage of the seat leg part is completed.

[0025] As used in the specification and claims, certain terminology is used to describe certain components. Those of ordinary skill in the art will understand that different manufacturers can refer to the same component by different names. The specification and claims should not be controlled based on the names used for the components in the specification and claims, but should be controlled based on the functionality of the components. As used throughout the specification and claims, "comprising" is a broad term intended to be synonymous with the term "including," and is used to mean the same as "consisting of." "Consisting essentially of" means including the elements listed after the term, plus other elements that do not materially affect the basic and novel characteristics of the compositions or methods. "Consisting of" means including the elements listed after the term, and excluding all other elements.

[0026] It should be noted that the terms "comprising," "including," and "having" or any other variation thereof, are intended to cover a non-exclusive inclusion. Thus, a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In other words, unless expressly stated to the contrary, the process, method, article, or apparatus that "comprises" or "has" one or more elements does not exclude the existence of additional elements.

[0027] The above description discloses and describes several preferred embodiments of the present application, but as previously mentioned, it is understood that the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application described herein, by the above teachings or related art or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. A foldable chair foot structure of a seat, comprising a base (10); a telescopic tube (18) is fixedly connected to the upper end of the base (10); characterized in that, It also includes a clamping seat (17) fixed outside the telescopic tube (18); the clamping seat (17) has six equal-sized end faces outside; the base (10) is provided with a pair of fixed blocks (15) at the corresponding six outside end faces; each pair of fixed blocks (15) is rotatably connected with a support rod (11); each support rod (11) is detachably connected with a pulley (12) outside; the clamping seat (17) is provided with a contraction control device capable of controlling the rotation of the support rod (11).

2. The foldable seat and chair leg structure according to claim 1, wherein: The contraction control device at least includes a cylindrical gear profile (13); the number of the cylindrical gear profile (13) is six; each cylindrical gear profile (13) is fixedly connected with the inside upper end of the corresponding support rod (11); the six end faces of the clamping seat (17) are fixedly connected with electric cylinders (16), respectively; the output end of each electric cylinder (16) is fixedly connected with a rack (14); the racks (14) on the same side are engaged with the cylindrical gear profile (13).

3. A seat folding chair leg structure according to claim 2, characterized in that: The upper end of each support rod (11) is fixedly connected with a pair of rotating shafts (19); the pair of rotating shafts (19) are coaxial with the cylindrical gear profile (13) on the same side; the pair of rotating shafts (19) are rotatably connected with the corresponding fixed blocks (15).

4. A seat folding chair leg structure according to claim 3, characterized in that: The pulley (12) is a universal wheel.

5. A seat folding chair leg structure according to claim 4, characterized in that: Each rack (14) is slidably connected with the clamping seat (17).

6. The foldable seat and chair leg structure according to claim 4, wherein: Each support rod (11) is made of titanium alloy.

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