CN111685524A

CN111685524A - Fine adjustment mechanism for chair

Info

Publication number: CN111685524A
Application number: CN202010742743.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Yudou Shanghai Intelligent Technology Co ltd
Current assignee: Yudou Shanghai Intelligent Technology Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-09-22

Abstract

The invention discloses a chair fine adjustment mechanism, comprising: a stool part and a backrest; the stool part is supported on the supporting legs through the upright posts; the bench portion includes arranged in bench casing: the device comprises a retainer, an elastic cushion arranged on the retainer and a mechanism frame which is used for receiving and clamping the elastic cushion with the retainer and connecting the retainer to a stand column; the retainer comprises a disc-shaped body and a hole which is arranged on the disc-shaped body and used for inserting and sleeving the upright post; the disc-shaped body is provided with a mounting area for placing the elastic pad; the elastic cushion is arranged in the mounting area and can be restored to deform in the stress direction along with the bearing force borne by the stool; a machine frame including a connecting body carrying a seat cushion, the connecting body including a fixed end corresponding to the hole and adapted to abut the upright; the connector includes a raised portion supported on the springpad. The structure can be matched with various seats, so that the seat has the function of elastic fine adjustment in the position of the stool. If the elastic cushion with better elasticity is added, the front-back angle of the seat can be effectively adjusted, the sitting feeling is more comfortable, and the sitting posture freedom degree is larger.

Description

Fine adjustment mechanism for chair

Technical Field

The invention relates to the field of seat structures, in particular to a fine adjustment mechanism of a seat.

Background

An office and study chair is a piece of daily life furniture, in particular to a piece of seating furniture with a backrest, a seat and armrests. At present, most office and study chairs generally comprise a lifting mechanism in a structure, and the structures are usually directly exposed, so that the appearance is influenced, dust is easily accumulated, and the office and study chairs are difficult to clean. Under normal conditions, the chair only has the functions of ascending and descending up and down and the function of adjusting the forward and backward inclination angle, and the front and the back of the chair do not have the fine adjustment function of slightly changing according to the sitting posture. The user does not have good buffering when sitting down, resulting in poor sitting feeling.

In order to solve the problems, the office chairs adopt the seat cushions with the memory function for increasing the comfort of the seat, and although some experience feelings can be improved, the seat cushions are mostly airtight, and discomfort can be caused by long-time sitting and pressing. Therefore, in order to provide a chair with an orientation fine-tuning capability that can be finely varied according to sitting postures, a simple and feasible structure is needed to solve the problem.

Disclosure of Invention

The invention aims to: the utility model provides a chair fine-tuning, solved the bench structure of sitting of seat and not only satisfied the requirement of structural support, structural connection, structural assembly but also can produce the technical problem of fine setting function according to the slight change of position of sitting.

The technical scheme of the invention is as follows: a chair recliner mechanism for a variety of chairs having a back rest, comprising: a stool portion, a backrest and armrests. The stool part is supported on the star-shaped supporting legs through the upright posts, extends upwards from two sides of the stool part to be connected with the armrests, and extends upwards from the rear side of the stool part to be connected with the backrest.

The stool part can be divided into a plurality of units with independent functions, and specifically comprises a retainer, an elastic cushion, a mechanical framework, an upper shell and a lower shell.

The main body of the retainer is a disk-shaped body, the disk-shaped body is a rotary structure with gentle taper, and the disk-shaped body has a streamline surface structure. The outer surface of the retainer is provided with a lower shell, and the lower shell has the effect of decorating the appearance. The interior of the disk-shaped body is arranged as a cavity, and the center of the cavity is a hole formed along the axial direction. The hole is used for inserting and sleeving the stand column, the upper end of the stand column is matched with the stand column and fixedly connected with the mechanism frame, and the lower end of the stand column is a supporting leg.

Meanwhile, a plurality of elastic pads are arranged on the disc-shaped body and are cylindrical, and the elastic pads are vertically arranged to bear the weight and the seat pressure of a user. If the cost of the spring pad is higher or other technical reasons, the spring pad can be replaced by a spring, and the effect of the spring and the spring pad is the same. Generally, the elastic pad is made of elastic materials, an installation area for placing the elastic pad is arranged on the disc-shaped body, and the elastic pad can be restored to deform in the stress direction along with the bearing force borne by the stool in the installation area. Based on the function of the elastic pad, the elastic pad is made of organic polymer materials, and the elastic pad also needs to have wear resistance and durability while having elastic deformation.

Specifically, a plurality of mounting areas are respectively arranged on two sides of the upper hole of the disc-shaped body, an upward protruding columnar bulge is arranged at the center of each mounting area, and the elastic pad is also provided with a center hole, so that the elastic pad can be positioned and mounted through the center hole and the columnar bulge.

The bullet pad is a plurality of series connection processing bullet pad group in order to increase fixed stability. Specifically, a plurality of bullet pads are established ties through the splice bar of bullet pad root and are formed, can increase every stability, are convenient for install moreover. Rivet holes are formed in the connecting ribs, and each elastic cushion group is installed on the disc-shaped body through a fastener matched in the rivet hole. The elastic pad can be placed on the columnar protrusion without screws, and is fixed by the folding clamp passing through the upper and lower frame bodies.

Between the bullet pad group of both sides and the branch row in the both sides in hole, arranged two supporting parts, the supporting part is protruding upwards along the direction of support of sitting bench portion, and the supporting part is the triangle and stabilizes the form, has seted up two axial shaft holes at the center of supporting part. The shaft hole is arranged between the elastic cushion groups on the two sides, and the elastic cushion groups on the two sides are optimally arranged at the middle positions, so that the stress direction of the elastic cushion can be shifted by taking the shaft hole as a rotation center.

The elastic cushion is supported by a mechanism frame which is used for bearing the cushion and a user. The mechanical frame and the retainer are used for clamping the elastic pad, the elastic pad is finely adjusted due to deformation, and the mechanical frame at the positions of the elastic pads on two sides rotates by taking the shaft hole as a fulcrum. Therefore, the mechanism frame needs to be movably connected with the end part of the upright post matched in the hole. Specifically, the end of the upright post assembled in the hole is connected with the mechanism frame through a pin shaft assembly transversely inserted on the supporting part in a pin insertion mode.

The pin shaft assembly comprises a T-shaped shaft, an oil-containing shaft sleeve and a clamp spring, the oil-containing shaft sleeve is sleeved on the T-shaped shaft and matched in the shaft hole, and the front end of the T-shaped shaft is inserted into a fixed end on the mechanism frame and clamped through the clamp spring. The framework comprises two fixed ends, and therefore each fixed end is matched and installed with the corresponding supporting part through a group of pin shaft assemblies. Therefore, after the upper end of the upright post is connected with the mechanism frame, the supporting effect can be achieved, the fulcrum effect can be achieved, and stable fulcrum connection is provided for fine adjustment of the stool. And the structure is more reasonable than the common structure, the connection is not complicated, and the disassembly and the maintenance are more convenient.

The simultaneous framework further comprises: the armrest fixing part extends towards the two sides of the sitting stool part and is used for fixing the armrest, and the backrest fixing part extends towards the rear side of the sitting stool part and is used for fixing the backrest.

Preferably, in order to increase the structural strength and the load-bearing capacity, structural reinforcing ribs are arranged between the holes and the mounting area of the spring washer, and structural reinforcing ribs are also arranged between the holes and the support portion.

Preferably, the elastic pad is uniformly distributed in an arc track, so that the elastic pad has a better bearing effect. Including the recess on the top face of bullet pad, arranged the arc arch simultaneously on the bottom surface of framework, the recess of a plurality of bullet pads is discontinuous arc groove, and the protruding cooperation recess location of arc of framework bottom and pressfitting.

The invention has the advantages that:

1. the structure can be matched with various seats, so that the seat has the function of elastic fine adjustment in the position of the stool. If a better elastic cushion is added, the front and back angles of the seat can be effectively adjusted, the sitting feeling is more comfortable, and the sitting posture freedom degree is larger;

2. the structure is reasonable in arrangement, good in stress condition, free of structural deformation of hardware, convenient to disassemble and capable of replacing the spring pad according to self needs.

3. The cooperation between the structure is nimble, and the intensity between the adapting unit is better, and each subassembly is easily produced, and the assembly is quick, can improve the productivity of product, reduces the defective percentage.

4. The structure streamline sense is outstanding, and the integral type inferior valve is perfect to hide adjustment mechanism, and the outward appearance is clean and tidy, has the aesthetic feeling.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is an exploded view of the seat fine adjustment mechanism;

FIG. 2 is a schematic view of an office chair employing a chair fine adjustment mechanism;

FIG. 3 is a schematic view of an office chair employing a fishtail back and seat fine adjustment mechanism;

FIG. 4 is an assembly view of the structure on the cage;

FIG. 5 is an exploded view of the structure on the cage;

FIG. 6 is a schematic structural view of a spring pad set;

FIG. 7 is a block diagram of the mechanism frame;

FIG. 8 is a top view of the seat fine adjustment mechanism;

wherein: 1. a stool part; 2. a backrest; 3. a handrail; 4. a column; 11. a holder; 12. a spring pad; 13. a frame; 111. a disk-shaped body; 112. an aperture; 113. a support portion; 114. an installation area; 115. a columnar bulge; 116. structural reinforcing ribs; 117. a T-shaped shaft; 118. an oil-containing shaft sleeve; 119. a clamp spring; 121. connecting ribs; 122. a first connecting screw; 131. a fixed end; 132. a handrail fixing part; 133. a backrest fixing part; 134. and a second connecting screw.

Detailed Description

The preferred embodiment of the present invention:

a chair fine adjustment mechanism comprising: a stool part 1, a backrest 2 and armrests 3. The stool part 1 includes a holder 11, an elastic pad 12, and a mechanism frame 13.

The main body of the retainer 11 is a disk-shaped body 111 with a gentle taper, the interior of the disk-shaped body 111 is arranged as a cavity, and the center of the cavity is a hole 112 formed along the axial direction. The holes 112 allow the studs 4 to be inserted, the upper ends of the studs 4 fitting therein and being fixedly connected to the frame of the plate 111.

A plurality of mounting areas 114 are respectively disposed at both sides of the hole of the disk-shaped body 111, and a columnar protrusion 115 protruding upward is disposed at the center of the mounting areas 114. There is a conical column shaped spring washer 12, the spring washer 12 has a center hole, and the spring washer 12 can be positioned and installed through the center hole and the column shaped protrusion 115.

In this embodiment, three mounting areas 114 are respectively arranged at the front side and the rear side of the hole 112, and each mounting area 114 corresponds to one elastic pad 12. The elastic pads 12 on the same side are connected in series through the connecting ribs 121 at the root parts of the elastic pads, so that the stability of each elastic pad can be improved. The connecting ribs 121 are mounted on the disk-shaped body 111 by first connecting screws 122, and each connecting rib 121 corresponds to one first connecting screw 122. The elastic pad can also be placed on the columnar protrusion 115, is not fixed by screws, and is fixed by a folding clamp passing through the upper and lower frame bodies. Above two modes all need the bullet pad to be arc orbit evenly distributed, consequently have better bearing effect.

The left side and the right side of the hole 112 are respectively provided with a supporting part 113, the supporting parts 113 are in a triangular stable shape, and two axial holes in the transverse axial direction are arranged in the centers of the supporting parts 113.

The mounting areas 114 at the front and rear sides of the hole 112 and the supporting portions 113 at the left and right sides of the hole are symmetrical about the center of the hole. In order to increase the structural strength and load-bearing capacity, structural reinforcement ribs 116 are arranged between the hole 112 and the mounting region 114 of the springboard 12, and structural reinforcement ribs 116 are also arranged between the hole 112 and the support portion 113.

The mechanism frame 13 presses on the elastic pad, the mechanism frame is used for bearing the cushion and a user, the mechanism frame 13 is used for installing the upper shell and the cushion, and the mechanism frame 13 is connected with the upper shell through a second connecting screw 134. The end of the column 4 fitted in the hole 112 of the holder 13 is end-pinned to the mechanism frame 13 by a pin assembly laterally inserted into the support portion 113. The pin shaft assembly comprises a T-shaped shaft 117, an oil-containing shaft sleeve 118 and a clamp spring 119, wherein the oil-containing shaft sleeve 118 is sleeved on the T-shaped shaft 117, the oil-containing shaft sleeve 118 is matched in a shaft hole, and the front end of the T-shaped shaft 117 is inserted into a fixed end 131 on the mechanism frame 13 and clamped through the clamp spring 119.

The mechanism frame 13 and the retainer 11 are used for clamping the elastic pad 12, and the elastic pad 12 is slightly adjusted due to deformation, so that the mechanism frame 13 at the positions of the elastic pads 12 on two sides can be slightly adjusted in a rotating mode by taking the shaft holes as fulcrums. The top end face of each elastic pad 12 comprises a groove, arc-shaped protrusions are arranged on the bottom face of the machine frame 13, the grooves of the elastic pads 12 are discontinuous arc-shaped grooves, and the arc-shaped protrusions at the bottom of the machine frame 13 are matched with the grooves for positioning and pressing.

The framework 13 further comprises: an armrest fixing portion 132 for fixing an armrest extends in both side directions of the stool portion, and a backrest fixing portion 133 for fixing a backrest extends in a rear direction of the stool portion.

The structure can also be applied to the chair back with other structures, such as the chair with the fishtail back shown in fig. 3, and the chair fine adjustment mechanism can also be adopted between the chair back and the fishtail back.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed herein be covered by the appended claims.

Claims

1. A chair fine adjustment mechanism comprising: a stool part and a backrest; the stool part is supported on the supporting legs through the upright posts; the method is characterized in that: the bench portion comprises a bench shell arranged inside: the device comprises a retainer, an elastic cushion arranged on the retainer and a mechanism frame which is used for receiving and clamping the elastic cushion with the retainer and connecting the retainer to a stand column;

the retainer comprises a disc-shaped body and a hole which is arranged on the disc-shaped body and used for inserting and sleeving the upright post; the disc-shaped body is provided with a mounting area for placing the elastic pad; the elastic cushion is arranged in the mounting area and can be restored to deform in the stress direction along with the bearing force borne by the stool;

a machine frame including a connecting body carrying a seat cushion, the connecting body including a fixed end corresponding to the hole and adapted to abut the upright; the connector includes a raised portion supported on the springpad.

2. The seat fine adjustment mechanism of claim 1, wherein: the disc-shaped body comprises a supporting part which is upwards protruded along the supporting direction; the support parts are arranged on both sides of the hole; the end part of the upright post assembled in the hole is in pin-socket connection with the end part of the machine frame through a pin shaft component which is transversely inserted on the supporting part.

3. The seat fine adjustment mechanism of claim 1, wherein: the disc-shaped body is provided with a mounting area for placing the elastic pad; and columnar bulges sleeved on the elastic pad in an inserting manner are arranged in the mounting area.

4. The seat fine adjustment mechanism of claim 2, wherein: the elastic pads are arranged on two axial sides of the pin shaft assembly.

5. The seat fine adjustment mechanism of claim 1, wherein: the mechanism frame includes: the armrest fixing part extends towards the two sides of the sitting stool part and is used for fixing the armrest, and the backrest fixing part extends towards the rear side of the sitting stool part and is used for fixing the backrest.

6. The seat fine adjustment mechanism of claim 1, wherein: the stool part comprises an upper shell, and the upper shell is arranged on the mechanism frame; a cushion is arranged on the upper shell; the frame is connected to the upper shell by fasteners.

7. The seat fine adjustment mechanism of claim 1, wherein: both sides of the hole are uniformly provided with: the elastic cushions are connected in series through the connecting ribs at the root parts of the elastic cushions to form an elastic cushion group.

8. The seat fine adjustment mechanism of claim 2, wherein: the pin shaft assembly comprises a T-shaped shaft, an oil-containing shaft sleeve and a clamp spring.

9. The seat fine adjustment mechanism of claim 1, wherein: structural reinforcing ribs are arranged between the holes and the mounting areas of the elastic cushions; structural reinforcing ribs are also disposed between the holes and the support portion.

10. The seat fine adjustment mechanism of claim 1, wherein: the top end face of the elastic pad comprises a groove used for being matched with the protruding part in a pressing mode.