JP3070400U - Adjustable chair fixed seat structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixed seat structure of an adjustable chair which is convenient for mounting, has good stability, and can reduce manufacturing cost. SOLUTION: One rectangular receiving seat is provided below the substrate, one shallow recess is provided thereon, and one perforation is provided at each of four corners of the shallow recess. A fixed seat is attached to the fixed seat, the fixed seat is a plastic square having a center hole, a metal sleeve is integrally formed in the center hole, and nuts are provided at four corners, respectively. A fish-eye hole is provided, and the bolt passes through the hole in the shallow recess and is screwed into a nut in the fish-eye hole, and the fixed seat is attached to the receiving seat.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of adjustable chair fixed seat structure, in which a metal sleeve is integrally formed in a center hole of a fixed seat for mounting an air pressure bar below the board of the adjustable chair, and screwed below the board to mount. The present invention relates to a fixed seat structure for an adjustable chair, which is convenient and has good stability and can reduce manufacturing costs.

[0002]

[Prior art]

 In general, chairs used in offices are adjusted in height and angle according to the height of the user so that a comfortable sitting posture can be obtained. Chairs that can be adjusted in height have a bar that expands and contracts below the seat, and the height of the bar can be adjusted by adjusting the height of the bar so that it can be used for users of different heights. Modest adjustment.

Further, as shown in FIGS. 5 and 6, a structure in which a well-known pressure bar is attached to a lower part of a seat portion is a swing which can slightly swing up and down below a substrate a having an inverted U-shaped cross section. The seat b is pivotally connected, and an adjustment mechanism c is mounted between the board a and the swing seat b. The adjustment mechanism c includes one screw rod c1 that penetrates the board a and the swing seat b. A sleeve c2 fixed to the seat b, and the screw rod c1 penetrates into the sleeve c2, a spring c3 and a gasket c4 are provided in the sleeve c2, and one screw cap c5 is attached to the screw rod c1. The inclination angle of the substrate a can be adjusted by rotating the screw cap c5. Also, one U-shaped sheet b1 is welded below the swing sheet b, and one fixing hole b2 penetrating the U-shaped sheet b1 and the swing sheet b is provided, and one pressure bar is provided in the fixing hole b2. d is inserted, and one L-shaped handle e is provided to penetrate horizontally between the board a and the swing seat b. The L-shaped handle e is provided with an arc portion e1, and the arc portion e1 is just When the L-shaped handle e is pressed at the upper end of the bar d, the circular arc e1 is swung downward to press the bar d, thereby expanding and contracting the bar d. The height of the can be adjusted.

However, the U-shaped sheet b1 for attaching the well-known pressure bar d to the lower side of the swing seat b is connected to the swing seat b by a welding method, and the welded portion is easily ruptured. The strength was inferior and easily damaged. In addition, electric welding tools are required for assembling by the welding method, so that the assembling is relatively troublesome and inconvenient, and the manufacturing cost is increased.

[0005] Furthermore, the U-shaped sheet b1 is formed by bending a thick metal plate, so that the processing cost is relatively high, and therefore, the competitiveness in the market is reduced.

The fixing holes b2 of the swing seat b and the U-shaped sheet b1 have a small thickness and a small contact area with the upper end of the pressure bar d, so that the fixing holes b2 can be easily expanded. A loosening occurred between the upper end of the pressure bar d and the swing seat b and the U-shaped seat b1, causing the chair to wobble.

[0007]

[Problems to be solved by the invention]

 The main object of the present invention is to provide a kind of adjustable seat fixed seat structure, which is integrally formed with metal in a center hole of a fixed seat provided for mounting an air pressure bar below a board of the adjustable chair. Adjustable chair fixed seat structure with sleeves formed and bolts attached to the fixed seat below the substrate, which is convenient for installation, has good stability, and can reduce manufacturing cost It is assumed that

[0008]

[Means for Solving the Problems]

 The invention of claim 1 is that one L-shaped back rod is pivotally connected below one substrate, and one adjusting mechanism is mounted between the L-shaped back rod and the substrate, wherein the adjusting mechanism is one screw rod. Penetrates the substrate and the L-shaped back rod, and the screw rod is inserted into one sleeve, penetrates a spring and a gasket provided in the sleeve, and one screw cap is screwed into the screw rod. In the fixed seat structure of the adjustable chair, wherein the angle of the L-shaped back rod can be adjusted by rotating the screw cap, a rectangular receiving seat is provided below the base plate, and the receiving seat has a rectangular shape. A shallow recess is provided, one hole is provided in each of four corners of the shallow recess, and one fixing seat is attached to the shallow recess. The seat is a plastic square with a center hole, a metal sleeve is integrally formed in the center hole, and one fisheye hole is provided at each of the four corners of the fixed seat, and the bolt is shallow. A fixed seat is attached to the receiving seat by penetrating the recessed hole and being screwed into one nut integrally formed in the fisheye, and a groove is provided on a side of the fixed seat, The groove and the center hole communicate with each other, one cross lever is mounted in the groove, and one bar is inserted into the center hole of the fixed seat, and the inner end of the cross bar is the bar. A fixed seat structure for an adjustable chair, characterized in that the upper end is brought into contact with the upper end and the outer end of the cross lever is pressed to expand and contract the pressure bar so that the height can be adjusted. .

[0009]

[Embodiment of the invention]

 The present invention provides a kind of adjustable seat fixed seat structure, in which one L-shaped back rod is pivoted below one substrate, and one adjustment mechanism is provided between the L-shaped back rod and the substrate. In the fixed seat structure of the adjustable chair, which is attached and the angle of the L-shaped back rod can be adjusted by the adjusting mechanism, one rectangular receiving seat is provided below the substrate, and one shallow recess is provided thereon. One shallow hole is provided in each of the four corners of the shallow recess, and one fixed seat is mounted on the shallow recess, and the fixed seat is formed of a plastic square having a center hole. One metal sleeve is integrally formed inside the fisheye hole, and a fisheye hole with a nut is provided at each of the four corners, and the bolt passes through the shallow recessed hole and is screwed into the nut in the fisheye hole. The fixed seat is It is characterized in that Tagged. Due to the above features, the fixing seat is attached to the lower part of the board with bolts by means of a metal sleeve formed integrally with the center hole thereof, which is convenient for mounting, has good stability, and reduces manufacturing costs. Can be

[0010]

【Example】

 As shown in FIGS. 1 and 2, in the present invention, one L-shaped back rod 2 is pivotally connected below one substrate 1 and one adjusting mechanism is provided between the L-shaped back rod 2 and the substrate 1. 3 is attached. In the adjusting mechanism 3, one screw rod 31 penetrates the substrate 1 and the L-shaped back rod 2, and the screw rod 31 is inserted into a sleeve 32. A spring 33 and a gasket 34 are provided in the sleeve 32. Further, one screw cap 35 is screwed around the screw rod 31 so that the angle of the L-shaped back rod 2 can be adjusted by rotating the screw cap 35. This is as shown in FIG. The features of the present invention are described below.

A rectangular receiving seat 11 is provided below the substrate 1, a rectangular shallow recess 11a is provided in the receiving seat 11, and one perforation 12 is provided in each of four corners of the shallow recess 11a. One fixed seat 4 is attached to the shallow concave portion 11a, and the fixed seat 4 is formed of a plastic square having a center hole 41, and a metal sleeve 42 is integrally formed in the center hole 41; One fisheye hole 43 is provided at each of the four corners of the fixing seat 4, and a bolt 45 penetrates the perforation 12 of the shallow recess 11 a and one nut 44 is integrally formed in the fisheye hole 43. The fixed seat 4 is attached to the receiving seat 11 by being screwed into a nut 44 in the fisheye hole 43 of the fixed seat 4. This is as shown in FIG. One groove 46 is provided on the side of the fixed seat 4, the groove 46 communicates with the center hole 41, and one cross lever 5 is mounted in the groove 46. One pressure bar 6 is inserted into the center hole 41 of the pressure bar, and the inner end of the cross lever 5 comes into contact with the upper end of the pressure bar 6, thereby pressing the outer end of the cross lever 5. 6 can be expanded and contracted, and the height can be adjusted.

[0012]

[Effect of the invention]

 With the above structure, the fixing seat 4 is made of a plastic square, and the receiving seat 11 of the substrate 1 is provided with a shallow concave portion 11a corresponding to the shape of the upper surface of the fixing seat 4, whereby the fixing seat 4 is formed. It can be easily positioned on the bottom surface of the receiving seat 11, and it is convenient to screw the bolt 45 into the nut 44 in the fisheye hole 43 of the fixed seat 4 through the perforation 12 of the shallow recess 11a. 1 can be easily attached to the bottom surface, and there is no hassle due to well-known welding.

Further, since the fixing seat 4 is attached below the receiving seat 11 on the bottom surface of the substrate 1 by the bolt 45, the assembling can be performed quickly, the assembling cost can be reduced, and the production speed can be reduced. It can accelerate, lower manufacturing costs and increase market competitiveness.

Further, a metal sleeve 42 is integrally formed in the center hole 41 of the fixed seat 4, whereby the pressure bar 6 and the center hole 41 have a relatively large contact area, and the metal sleeve 42 is formed. The connection between the bush 42 and the pressure bar 6 is close, so that it is difficult for loosening to occur, providing good stability to the chair and preventing wobble.

[0015] As described above, the present invention improves on the shortcomings of the known technology, and has practicality, novelty, and industrial value. It should be noted that any modification or alteration of details that can be easily made based on the present invention shall fall within the scope of the claims of the present invention.

[Brief description of the drawings]

FIG. 1 is a three-dimensional elevation view of the present invention.

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is a vertical sectional view of the present invention.

FIG. 4 is a side sectional view of the present invention.

FIG. 5 is an exploded perspective view of a known technique.

FIG. 6 is a sectional view of a known technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Substrate 11 Receiving seat 11a Shallow recess 12 Perforated 2 L-shaped back rod 3 Adjusting mechanism 31 Screw rod 32 Sleeve 33 Spring 34 Gasket 35 Screw cap 4 Fixed seat 41 Center hole 42 Metal sleeve 43 Fisheye hole 44 Screw cap 45 Bolt 46 groove 5 Cross lever 6 Bar

Claims (1)

[Utility model registration claims] 1. An L-shaped back rod is pivotally connected below one substrate, and one adjusting mechanism is mounted between the L-shaped back rod and the substrate. And an L-shaped back rod, and the screw rod is inserted into one sleeve, a spring and a gasket provided in the sleeve, and one screw cap is screwed into the screw rod. In the fixed seat structure of the adjustable chair, in which the angle of the L-shaped back rod can be adjusted by rotating the screw cap, a rectangular receiving seat is provided below the substrate, and the receiving seat has a rectangular shallow shape. A recess is provided, one perforation is provided at each of the four corners of the shallow recess, and one fixed seat is attached to the shallow recess, and the fixed seat is centered. A metal sleeve is integrally formed in the center hole, and one fisheye hole is provided at each of the four corners of the fixing seat, and a bolt penetrates a hole in a shallow recess. And a fixed seat is attached to the receiving seat by being screwed into one nut integrally formed in the fish eye hole,
One groove is provided on the side of the fixed seat, the groove communicates with the center hole, one cross lever is mounted in the groove, and one bar is inserted into the center hole of the fixed seat. Then, the inner end of the cross lever sticks against the upper end of the bar, whereby the bar is expanded and contracted by pressing the outer end of the bar, and the height can be adjusted. Characteristic, fixed seat structure of adjustable chair.