Office chair bearing structure capable of being stressed uniformly

Abstract

The utility model discloses an office chair bearing structure capable of being uniformly stressed, which belongs to the field of office chairs and comprises an office chair body, and an adjustable air pressure rod for adjusting the height of the office chair and a universal wheel device for adjusting the direction are sequentially arranged below the office chair body. Compared with the prior art, the novel office chair has the advantages that the contact area of the novel office chair and the chair is increased through the tripod and the stabilizing pillar, the stress surface of the novel office chair is larger, and the spring rod device between the tripod and the stabilizing pillar ensures that when the gravity center of the office chair deviates, the office chair can be stably supported through retraction or stretching of the spring rod device; the gravity center of the connecting end of the adjustable air pressure rod is kept constant, so that the connecting end of the adjustable air pressure rod is in a uniform stress state all the time, and the fracture of the office chair caused by non-uniform bearing force of the connecting end is avoided; through circular sliding of the adjusting ball and the stabilizing slave column, the swinging radian of the office chair is limited, and the situation that the chair turns over due to the fact that the gravity center shift radian is too large is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to office chair field, specifically point to a kind of office chair load-bearing structure of even stress. BACKGROUND

[0002] The seat stool is indispensable in human life, and their appearance greatly facilitates the eating, living and traveling of human beings. In order to facilitate the movement of the seat, people usually install a rotating wheel at the bottom of the seat to make it a sliding chair. The office chair is one of the best sliding chairs, which has the advantages of easy movement, flexible direction and adjustable height, and therefore is very popular in the industry of indoor office.

[0003] The existing office chair usually has an adjustable gas pressure rod for adjusting the height of the office chair and a universal wheel device for adjusting the direction of the office chair body installed in sequence below the office chair body.

[0004] Although the office chair with the above structure can move freely and turn, when facing the action of leaning back by the staff, the seat usually overturns or the connecting end breaks due to uneven stress, and after the seat breaks, debris is more likely to be inserted into the human body, thereby causing secondary injury. TECHNICAL CONTENT

[0005] The technical problem to be solved by the utility model is that the existing office chair load-bearing structure cannot keep the seat in an even stress state at all times when the center of gravity of the office chair is offset.

[0006] To solve the above technical problem, the technical solution provided by the utility model is as follows: an office chair load-bearing structure capable of even stress, comprising an office chair body, an adjustable gas pressure rod for adjusting the height of the office chair and a universal wheel device for adjusting the direction are sequentially arranged below the office chair body, and a seat stabilizing mechanism is arranged between the adjustable gas pressure rod and the office chair body.

[0007] As an improvement, the seat stabilizing mechanism comprises a tripod arranged below the office chair body and a stabilizing column connected by a plurality of spring rod devices, a stabilizing column is arranged between the tripod, the stabilizing column is connected with the stabilizing column through an adjusting ball, the top surface of the stabilizing column and the bottom surface of the stabilizing column are both provided with an adjusting circular groove corresponding to the adjusting ball, and the adjusting circular grooves are not in contact with each other in the horizontal state.

[0008] As an improvement, the tripod and the stabilizing column are connected with the spring rod device through a pin structure, the adjusting circular groove of the stabilizing column is connected with the adjusting ball through body contact, the adjusting circular groove of the stabilizing column is connected with the adjusting ball through a positioning screw, and the inside of the adjusting ball is provided with a countersunk via passing through the positioning screw.

[0009] As an improvement, the spring rod device comprises a female rod, a T-shaped sub-rod and a pressure spring between the female rod and the T-shaped sub-rod, the pressure spring and the T-shaped sub-rod pass through the female rod in sequence, and the female rod is provided with a female rod sealing cover at an open end of the female rod.

[0010] As an improvement, the tripod is connected with the office chair body, the adjustable air pressure rod and the universal wheel device and the adjustable air pressure rod and the stabilizing column through bolt structures.

[0011] The utility model discloses compared with prior art has the advantages that the tripod and the stable column of the device increase the contact area with the seat, and the force receiving area is larger, and when the gravity center of the office chair deviates, the adjustable air pressure rod connection end gravity center can be kept constant through the retraction or stretching of the spring rod device between the tripod and the stabilizing column, so that the adjustable air pressure rod connection end is always in a uniform stress state, and the breaking of the office chair caused by uneven bearing capacity of the connection end is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the total structure diagram of the office chair bearing structure of the utility model.

[0013] Figure 2 It is the seat stabilizing mechanism explosion view of the office chair bearing structure of the utility model.

[0014] Figure 3 It is the seat stabilizing mechanism sectional view of the office chair bearing structure of the utility model.

[0015] Figure 4 It is the spring rod device sectional view of the office chair bearing structure of the utility model.

[0016] As shown in the drawings: 1, office chair body; 2, adjustable air pressure rod; 3, universal wheel device; 4, seat stabilizing mechanism; 41, tripod; 42, spring rod device; 421, female rod; 422, T-shaped sub-rod; 423, pressure spring; 424, female rod sealing cover; 43, stabilizing column; 44, stable column; 45, adjusting ball; 451, countersunk via; 46, adjusting circular groove. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with the drawings.

[0018] As the description of the drawings Figure 1 , 2,3 shown, comprising office chair body 1, the lower office chair body 1 is provided with adjustable gas pressure rod 2 and adjusting direction of universal wheel device 3 in turn, which adjusts the height of office chair, the adjustable gas pressure rod 2 and office chair body 1 between the seat stability mechanism 4 is provided, the seat stability mechanism 4 includes the tripod 41 below office chair body 1 and the stable column 43 connected by a plurality of spring rod device 42, the tripod 41 between the stable from column 44 is equipped, the stable column 43 is connected through the adjusting ball 45 and stable from column 44, the top surface of the stable column 43 and the bottom surface of stable from column 44 are provided with adjusting circular groove 46 corresponding to adjusting ball 45, the adjusting circular groove 46 is not contacted in horizontal state, the tripod 41 and stable column 43 are connected through pin structure and spring rod device 42, the adjusting circular groove 46 of stable from column 44 is connected through body contact and adjusting ball 45, the adjusting circular groove 46 of stable column 43 is connected through positioning screw and adjusting ball 45, the inside of adjusting ball 45 is provided with countersunk via 451 through positioning screw, the tripod 41 and office chair body 1, adjustable gas pressure rod 2 and universal wheel device 3 and adjustable gas pressure rod 2 and stable column 43 are connected through bolt structure, the adjusting ball 45 is kept through the body circular arc sliding motion with the adjusting circular groove 46 of stable from column 44 after adjusting office chair body 1 in the eccentricity of gravity, the supporting point is always kept on the column surface of stable column 43.

[0019] As shown in the description Figure 1 、 2 ,4 shown, the spring rod device 42 includes female rod 421, T-shaped sub rod 422 and pressure spring 423 between female rod 421 and T-shaped sub rod 422, the female rod 421 is single open female rod, the pressure spring 423 and T-shaped sub rod 422 pass through female rod 421 in turn, the open end of female rod 421 is provided with female rod sealing cover 424, the thin column end of T-shaped sub rod 422 passes through female rod sealing cover 424, the female rod sealing cover 424 is connected with the open end of female rod 421 through bolt structure, T-shaped sub rod 422 makes reciprocating motion in female rod sealing cover 424 through the push of pressure spring 423, because the angle of each spring rod device 42 is different, it is guaranteed that the gravity center of office chair body 1 is offset to any direction, and spring rod device 42 is forced to retract, the force point is transmitted back to stable column 43 through spring rod device 42.

[0020] The utility model discloses in the specific implementation, the pressure spring 423 and T shaped sub pole 422 are put into the female pole 421 in proper order, and T shaped sub pole 422 passes through the via of female pole sealing cover 424, and female pole sealing cover 424 is screwed into the thread on the open end of female pole 421, the adjusting ball 45 is put into the adjusting circular groove 46 in the top of stable pillar 43, and the screw via of adjusting ball 45 is aligned with the screw hole of stable pillar 43, and the screw is screwed into the fixed, the stable pillar 44 in the inside of tripod 41 is covered above adjusting ball 45, and adjusting ball 45 is located in the adjusting circular groove 46 in the bottom surface of stable pillar 44, the pin hole on both sides of spring pole device 42 is respectively aligned with the pin hole on the side of stable pillar 43 and the pin hole on the bottom surface of tripod 41, and the pin is inserted and fixed, the screw hole on both sides of adjustable air pressure rod 2 is respectively aligned with the central screw hole of universal wheel device 3 and the screw hole on the bottom surface of stable pillar 43, and the pin is screwed into the fixed, the screw hole on the bottom surface of office chair body 1 is aligned with the screw hole in the inside of tripod 41, and the screw is screwed into the fixed.

[0021] When using, adjusting adjustable air pressure rod 2, after adjusting office chair body 1 to the suitable height, staff sits in office chair body 1, under normal circumstances, the gravity center of staff is with adjustable air pressure rod 2, and is used as the supporting point together with stable pillar 43, when staff swings, office chair body 1 drives stable pillar 44 to rotate around adjusting ball 45, and spring pole device 42 connected between tripod 41 and stable pillar 43 will follow the extension or pop, and the gravity center of staff is offset and is returned to stable pillar 43 again under the action of spring pole device 42 and adjusting ball 45, avoiding the problem that the seat is broken due to the deviation of the gravity center of seat and supporting point being too large, because adjusting ball 45 is fixed in the adjusting circular groove 46 of stable pillar 43, the swing angle of stable pillar 44 is limited, when stable pillar 44 contacts stable pillar 43 in swinging, office chair body 1 cannot swing to the outside, avoiding the phenomenon that office chair body 1 is turned over due to the swing angle being too large.

[0022] The utility model discloses in the specific implementation, the pressure spring 423 and T shaped sub pole 422 are put into the female pole 421 in proper order, and T shaped sub pole 422 passes through the via of female pole sealing cover 424, and female pole sealing cover 424 is screwed into the thread on the open end of female pole 421, the adjusting ball 45 is put into the adjusting circular groove 46 in the top of stable pillar 43, and the screw via of adjusting ball 45 is aligned with the screw hole of stable pillar 43, and the screw is screwed into the fixed, the stable pillar 44 in the inside of tripod 41 is covered above adjusting ball 45, and adjusting ball 45 is located in the adjusting circular groove 46 in the bottom surface of stable pillar 44, the pin hole on both sides of spring pole device 42 is respectively aligned with the pin hole on the side of stable pillar 43 and the pin hole on the bottom surface of tripod 41, and the pin is inserted and fixed, the screw hole on both sides of adjustable air pressure rod 2 is respectively aligned with the central screw hole of universal wheel device 3 and the screw hole on the bottom surface of stable pillar 43, and the pin is screwed into the fixed, the screw hole on the bottom surface of office chair body 1 is aligned with the screw hole in the inside of tripod 41, and the screw is screwed into the fixed,

Claims

1. An office chair load bearing structure capable of uniform force, comprising an office chair body (1), the lower part of the office chair body (1) is sequentially provided with an adjustable air pressure rod (2) for adjusting the height of the office chair and a universal wheel device (3) for adjusting the direction, characterized in that: The adjustable air pressure rod (2) is provided with a seat stabilizing mechanism (4) between the office chair body (1).

2. The load-bearing structure of an office chair according to claim 1, wherein: The seat stabilizing mechanism (4) comprises tripods (41) below the office chair body (1) and stabilizing columns (43) connected by spring rod devices (42), the tripods (41) are provided with stabilizing columns (44) therebetween, the stabilizing columns (43) are connected with the stabilizing columns (44) through adjusting balls (45), and the top surface of the stabilizing columns (43) and the bottom surface of the stabilizing columns (44) are both provided with adjusting circular grooves (46) corresponding to the adjusting balls (45).

3. The load-bearing structure of an office chair according to claim 2, wherein: The tripods (41) and the stabilizing columns (43) are both connected with the spring rod devices (42) through pin structures, the adjusting circular grooves (46) of the stabilizing columns (44) are connected with the adjusting balls (45) through body contact, the adjusting circular grooves (46) of the stabilizing columns (43) are connected with the adjusting balls (45) through positioning screws, and the inside of the adjusting balls (45) is provided with countersunk via holes (451) through the positioning screws.

4. The load-bearing structure of an office chair according to claim 2, wherein: The spring rod device (42) comprises a female rod (421), a T-shaped male rod (422) and a pressure spring (423) between the female rod (421) and the T-shaped male rod (422), the female rod (421) is a single open female rod, the pressure spring (423) and the T-shaped male rod (422) pass through the female rod (421) in sequence, the open end of the female rod (421) is provided with a female rod sealing cover (424), and the thin column end of the T-shaped male rod (422) passes through the female rod sealing cover (424).

5. The load-bearing structure of an office chair according to claim 4, wherein: The female rod sealing cover (424) is connected with the open end of the female rod (421) through a bolt structure.

6. The load-bearing structure of an office chair according to claim 2, wherein: The tripods (41) and the office chair body (1), the adjustable air pressure rod (2) and the universal wheel device (3) and the adjustable air pressure rod (2) and the stabilizing columns (43) are all connected through bolt structures.

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