Seats

Abstract

The present invention discloses a chair, comprising: a stool portion, a backrest, and star-shaped legs; the stool portion is supported on the supporting legs by a column; the stool portion comprises: a retaining frame, an elastic pad block installed on the retaining frame, and a mechanism frame arranged in a stool shell, which is clamped by the retaining frame and connects the retaining frame to the column; a mounting area for placing the elastic pad block is arranged on the retaining frame; the elastic pad block generates a recoverable deformation in the force direction in the mounting area as the retaining frame is subjected to the bearing force; the mechanism frame comprises: a backrest fixing portion extending toward the rear side of the stool portion for fixing the backrest; the backrest is detachably assembled on the backrest fixing portion; the backrest is used to adjust the lumbar support in the leaning direction by a feeding assembly; the star-shaped legs are formed by bending and stretching a whole plate; the star shape and the column include a star-point paint layer.

Description

Technical Field

[0001] The invention relates to the technical field of seats, and in particular to a seat which can be adjusted adaptively. Background Art

[0002] Office study chairs are a kind of daily furniture, and also a kind of seat with backrest, seat and armrests. At present, the structure of most office study chairs generally includes lifting mechanism, and these structures are often directly exposed, which not only affects the appearance but also easily accumulates dust and is difficult to clean. Under normal circumstances, the chair only has the function of lifting up and down and adjusting the tilt angle forward and backward, and there is no fine-tuning function according to the slight changes in sitting posture. There is no good cushioning when the user sits down, resulting in a poor sitting feeling.

[0003] In order to solve the above problems, some office chairs use cushions with memory function to increase the comfort of sitting. Although this can improve the experience, most of these cushions are not breathable and will cause discomfort after sitting for a long time. Therefore, in order to provide the chair with a directional fine-tuning capability according to the slight changes in sitting posture, a simple and feasible structure is urgently needed to solve this problem. Summary of the invention

[0004] A technical solution provided by the present invention is a chair, comprising a seat portion, a backrest and star-shaped legs.

[0005] The stool part is supported on the star-shaped legs through upright posts, and armrests are extended upward from both sides of the stool part to be connected, and a backrest is extended upward from the rear side of the stool part to be connected.

[0006] The seat portion can be divided into a plurality of units with independent functions, specifically including a retaining frame, a spring washer, a mechanism frame, an upper shell, and a lower shell.

[0007] The main body of the cage is a disc-shaped body, which is a rotating structure with a gentle taper and a streamlined surface structure. The lower shell is installed on the outer surface of the cage, and the lower shell has a decorative effect. The interior of the disc-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 to insert the column, the upper end of the column fits in it and is fixedly connected to the mechanism frame, and the lower end of the column is a support leg.

[0008] At the same time, a number of elastic pads are arranged on the disc-shaped body. The elastic pads are columnar and are arranged vertically to bear the weight of the user and the seat pressure. If the cost of the elastic pads is high or for other technical reasons, they can also be replaced with springs. Here, the springs and elastic pads have the same effect. Generally, the elastic pads are made of elastic materials, and an installation area for placing the elastic pads is arranged on the disc-shaped body. The elastic pads in the installation area produce recoverable deformation in the force direction as the seat is subjected to the bearing force. Based on the function of the elastic pads, the elastic pads are mostly made of organic polymer materials. While having elastic deformation, they also need to be wear-resistant and durable.

[0009] Specifically, multiple installation areas are arranged on both sides of the hole on the disc-shaped body, and an upwardly protruding columnar protrusion is arranged in the center of the installation area. The spring washer is also provided with a center hole, so the spring washer block can be positioned and installed through the center hole and the columnar protrusion.

[0010] In order to increase the stability of the fixing, the spring pads are processed into a spring pad group in series. Specifically, multiple spring pads are connected in series through the connecting ribs at the root of the spring pads, which can increase the stability of each and facilitate installation. Rivet holes are opened on the connecting ribs, and each spring pad group is installed on the disc-shaped body through fasteners that fit in the rivet holes. The spring pads can also be placed on the columnar protrusions without being fixed by screws, and fixed by clamping the upper and lower frames.

[0011] Two support parts are arranged between the spring washer groups on both sides and on both sides of the hole. The support parts protrude upward along the support direction of the seat part. The support parts are triangular and stable, and two axial holes in the horizontal direction are opened in the center of the support parts. The axial hole is located between the spring washer groups on both sides, preferably in the middle of the spring washer groups on both sides, to ensure that the force direction of the spring washer block can be offset with the axial hole as the rotation center.

[0012] The mechanism frame is supported on the spring pad block, and the mechanism frame is used to support the seat cushion and the user. The mechanism frame and the retaining frame clamp the spring pad block, and the spring pad block is fine-tuned due to deformation, and the mechanism frame at the spring pad blocks on both sides rotates with the shaft hole as the fulcrum. Therefore, the mechanism frame needs to be movably connected to the end of the column matched in the hole. Specifically, the end of the column assembled in the hole is connected to the mechanism frame by an end pin assembly laterally inserted on the support part.

[0013] The pin assembly includes a T-shaped shaft, an oil-containing sleeve, and a retaining spring. The T-shaped shaft is provided with an oil-containing sleeve, which fits in the shaft hole. The front end of the T-shaped shaft is inserted into the fixed end on the mechanism frame and clamped by the retaining spring. The mechanism frame includes two fixed ends, so each fixed end is installed in cooperation with the corresponding support part through a set of pin assemblies. Therefore, when the upper end of the column is connected to the mechanism frame, it can not only play a supporting role, but also play a fulcrum role, providing a stable fulcrum connection for fine-tuning the bench. Moreover, this structure is more reasonable than the ordinary structure, the connection is not complicated, and it is more convenient to disassemble and maintain.

[0014] Preferably, in order to increase the structural strength and the load-bearing capacity, structural reinforcement ribs are arranged between the hole and the mounting area of ​​the spring pad, and structural reinforcement ribs are also arranged between the hole and the supporting portion.

[0015] Preferably, the spring pads are evenly distributed in an arc-shaped trajectory, so as to have a better load-bearing effect. A groove is included on the top surface of the spring pad, and an arc-shaped protrusion is arranged on the bottom surface of the mechanism frame. The grooves of the multiple spring pads are discontinuous arc-shaped grooves, and the arc-shaped protrusion at the bottom of the mechanism frame cooperates with the groove for positioning and pressing.

[0016] At the same time, the frame also includes: an armrest fixing part extending toward both sides of the stool part for fixing the armrests, and a backrest fixing part extending toward the rear side of the stool part for fixing the backrest.

[0017] The backrest fixing part is provided with a plurality of connection holes, and the backrest is detachably connected to the backrest fixing part by fasteners. The backrest is bent upward to form a back support, and generally the backrest has a certain hardness, which can be tilted and can also play a back support effect.

[0018] A lumbar support is installed at the upper end of the backrest, and the lumbar support is installed on the backrest through a feeding assembly. The lumbar support can be adjusted forward and backward in the leaning direction through the feeding assembly to achieve a fine-tuning effect.

[0019] The feed assembly includes gaskets, spring washers, aluminum parts, studs, and bolt washers.

[0020] The aluminum part is a columnar element, which includes a columnar clamping end for mounting on the backrest. The columnar clamping end is mounted on the backrest, and the clamping of the columnar body can achieve the purpose of lumbar rotation, which can increase the fun when used as a child seat.

[0021] The aluminum part is provided with a threaded hole for assembling a stud in the axial direction. The threaded hole is coaxial with the columnar clamping end. A longer stud is generally installed in the threaded hole. The front end of the stud is fixed to the outer shell of the lumbar support after assembling a gasket, a spring washer, and a bolt pad. Therefore, the feed adjustment in the leaning direction can be achieved by rotating the support.

[0022] Specifically, the gasket and the elastic gasket are stacked together and fixed on the back of the lumbar support, one end of the stud is pressed against the elastic gasket through the bolt gasket stacked on the elastic gasket and the bolt end is fixed to the back of the lumbar support, and the other end of the stud is assembled in the threaded hole.

[0023] The spring washer comprises an end face in contact with the washer and an axial convex surface in contact with the bolt washer, and the bolt washer is overlapped with the axial convex surface on the spring washer.

[0024] The elastic gasket includes an axial through hole, and the inner wall of the through hole includes a protrusion for limiting installation. A notch matching the protrusion is arranged in the axial hole of the gasket, and the two are used for corresponding installation and positioning locking.

[0025] The bolt pad includes a square hole in the axial direction, and the stud includes a square column portion with a protruding center on the axial end surface. After the end of the stud is fixed to the outer shell of the waist support, the root of the square column portion abuts against the bolt pad, thereby tightening the gasket and the spring washer, and generating a rotational deformation centered on the through hole according to the deformation of the spring washer.

[0026] Screw holes are arranged on the gasket, spring gasket and bolt gasket, and the feed assembly is installed on the center position of the waist support by connecting and fixing.

[0027] Preferably, the elastic gasket is generally a rubber elastic gasket, which is not easy to age and whose deformation amount can be adjusted according to the thickness setting.

[0028] The star-shaped leg is formed by bending and stretching a whole plate. The supporting leg of this structure has high stability, long service life, novelty and beauty. Generally, a layer of star-shaped paint is sprayed on the metal surface of the star-shaped leg and the column. The paint material is dispersed evenly through the mechanical dispersion process and made into a powder coating with the required particle size. It solves many problems such as poor paint effect and uneven spots.

[0029] Specifically, the main components of the star point paint include: 70-80% polyester resin, 5-8% curing agent, 3-5% auxiliary agent, 10-22% pigment, and 3-10% filler.

[0030] There are two types of spray colors, one is dark spots and the other is light spots.

[0031] The main components of dark spot spraying are 70-80% polyester resin, 5-8% curing agent, 3-5% additives, 12-22% pigment, and 3-7% filler.

[0032] The main components of light-colored spot spraying are 70-80% polyester resin, 5-8% curing agent, 3-5% additives, 10-20% pigment, and 5-10% filler.

[0033] The paint material does not produce any chemical reaction during the production process, and no volatile substances are generated; during the coating construction and powder curing process, no organic volatiles are generated, and it is a green and environmentally friendly paint.

[0034] The advantages of the invention are:

[0035] 1. The seat of this structural chair has the function of elastic fine-tuning. If a spring pad with good elasticity is added, it can effectively adjust the front and rear angle of the seat, making the sitting feeling more comfortable and the sitting posture more free.

[0036] 2. The backrest has feed adjustment, and the elasticity of the backrest can be fine-tuned with the spring-cushion seat. The rotatable backrest increases the fun of the children's chair.

[0037] 3. The paint surface is beautiful and elegant. No organic volatiles are produced during the coating construction and powder curing process. It is a green and environmentally friendly paint.

[0038] 4. The coordination between structures is flexible, the strength between connecting parts is good, each component is easy to produce and assemble quickly, which can improve the productivity of products and reduce the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0040] Figure 1 A three-dimensional diagram of a seat;

[0041] Figure 2 This is the structural explosion diagram of the seat fine-tuning mechanism;

[0042] Figure 3 A schematic diagram of an office chair using a seat fine-adjustment mechanism;

[0043] Figure 4 This is the structural assembly drawing on the cage;

[0044] Figure 5 This is an exploded view of the structure on the cage;

[0045] Figure 6 It is a structural schematic diagram of the spring washer group;

[0046] Figure 7 This is a structural diagram of the mechanism architecture;

[0047] Figure 8 This is a top view of the structure of the seat fine-tuning mechanism;

[0048] Fig. 9 A schematic diagram of the cooperation of a feeding component;

[0049] Fig.10 It is a schematic diagram of the coordination of another feed assembly, in which: 1. seat portion; 2. backrest; 3. armrest; 4. column; 5. lumbar support; 6. feed assembly; 11. retaining frame; 12. spring pad; 13. mechanism frame; 111. disc-shaped body; 112. hole; 113. support portion; 114. installation area; 115. columnar protrusion; 116. structural reinforcement rib; 117. T-shaft; 118. oil-containing bushing; 119. retaining ring; 121. connecting rib; 122. first connecting screw; 131. fixed end; 132. armrest fixing portion; 133. backrest fixing portion; 134. second connecting screw; 61. gasket; 62. spring gasket; 63. bolt pad; 14. stud; 15. aluminum part. DETAILED DESCRIPTION

[0050] Example 1

[0051] The seat portion 1 includes a retaining frame 11 , a spring pad 12 , and a mechanism frame 13 .

[0052] The main body of the retainer 11 is a disc-shaped body 111 with a gentle taper. The interior of the disc-shaped body 111 is arranged as a cavity, and the center of the cavity is a hole 112 formed along the axial direction. The column 4 can be inserted into the hole 112, and the upper end of the column 4 fits therein and is fixedly connected to the mechanism frame on the disc-shaped body 111.

[0053] A plurality of mounting areas 114 are arranged on both sides of the hole of the disc 111, and a columnar protrusion 115 protruding upward is arranged at the center of the mounting area 114. A cone-shaped spring pad 12 is provided, and the spring pad 12 has a central hole, and the spring pad 12 can be positioned and installed through the central hole and the columnar protrusion 115.

[0054] In this embodiment, there are three installation areas 114 on the front and rear sides of the hole 112, and each installation area 114 corresponds to a spring pad block 12. The spring pad blocks 12 on the same side are connected in series through the connecting ribs 121 at the roots of the spring pads, which can increase the stability of each. The connecting ribs 121 are installed on the disc-shaped body 111 through the first connecting screws 122, and each connecting rib 121 corresponds to a first connecting screw 122. The spring pads can also be placed on the columnar protrusions 115, without being fixed by screws, and fixed by clamping the upper and lower frames. The above two methods require that the spring pads are evenly distributed in an arc trajectory, so they have a better load-bearing effect.

[0055] A support portion 113 is disposed on each of the left and right sides of the hole 112 . The support portion 113 is in a triangular stable shape, and two axial holes in the transverse direction are opened in the center of the support portion 113 .

[0056] The installation areas 114 on both sides of the hole 112 and the support parts 113 on both sides are symmetrically centered about the center of the hole. In order to increase the structural strength and bearing capacity, a structural reinforcement rib 116 is arranged between the hole 112 and the installation area 114 of the spring pad 12, and a structural reinforcement rib 116 is also arranged between the hole 112 and the support part 113.

[0057] The mechanism frame 13 is pressed on the spring pad. The mechanism frame is used to carry the cushion and the user. The mechanism frame 13 is used to install the upper shell and the cushion. The mechanism frame 13 is connected to the upper shell through the second connecting screw 134. The end of the column 4 assembled in the hole 112 of the retaining frame 11 is connected to the mechanism frame 13 by the end pin assembly laterally inserted on the support part 113. The pin assembly includes a T-shaped shaft 117, an oil-containing shaft sleeve 118, and a retaining spring 119. The oil-containing shaft sleeve 118 is mounted on the T-shaped shaft 117, and the oil-containing shaft sleeve 118 is matched in the shaft hole. The front end of the T-shaped shaft 117 is inserted into the fixed end 131 on the mechanism frame 13 and is clamped by the retaining spring 119.

[0058] The mechanism frame 13 and the retaining frame 11 clamp the spring pad 12, and the spring pad 12 is fine-tuned due to deformation, so that the mechanism frame 13 at the spring pads 12 on both sides is slightly rotated and adjusted with the shaft hole as the fulcrum. The top surface of the spring pad 12 includes a groove, and an arc-shaped protrusion is arranged on the bottom surface of the mechanism frame 13. The grooves of multiple spring pads 12 are discontinuous arc-shaped grooves, and the arc-shaped protrusion at the bottom of the mechanism frame 13 cooperates with the groove for positioning and pressing.

[0059] Embodiment 2:

[0060] The frame 13 includes an armrest fixing portion 132 and a backrest fixing portion 133. The armrest fixing portion 132 is provided with an armrest by fasteners, and the backrest fixing portion 133 is provided with a plurality of connection holes.

[0061] The backrest 2 is installed by detachably connecting it to the backrest fixing part through a fastener.

[0062] A lumbar support 5 is installed at the upper end of the backrest 2. The lumbar support 5 is installed on the backrest through a feeding assembly 6 at the center position thereof. The lumbar support sponge is a shaped sponge and is more comfortable than a general sponge.

[0063] The feed assembly 6 includes an aluminum part 15 , a stud 14 , and a bolt washer 63 .

[0064] The gasket 61 and the elastic gasket 62 are stacked together and fixed to the back of the waist support 5. The elastic gasket 62 is generally a rubber elastic gasket, which can be fine-tuned according to the individual's comfortable sitting posture when sitting down.

[0065] The aluminum part 15 is a columnar element, which includes a columnar connecting end for mounting on the backrest 2. The columnar connecting end is mounted with the backrest 2, and the clamping of the columnar body can achieve the purpose of rotating the lumbar support 5, which can increase the fun when used as a child seat.

[0066] The elastic washer 62 includes an end surface in contact with the washer 61 and an axial convex surface in contact with the bolt washer 63 . The bolt washer 63 overlaps the axial convex surface of the elastic washer 62 .

[0067] A threaded hole for assembling a stud is provided in the axial direction of the aluminum part 15, and the threaded hole is coaxial with the columnar connection end, and a relatively long stud 14 is generally assembled in the threaded hole. The front end of the stud 14 is fixed to the outer shell of the lumbar support 5 after assembling the gasket 61, the spring gasket 62, and the bolt gasket 63, so that the feed adjustment in the leaning direction can be achieved by rotating the support.

[0068] One end of the stud 14 is pressed against the elastic washer 62 by a bolt washer 63 stacked on the elastic washer 62 and the bolt end is fixedly connected to the back of the waist support 5, and the other end of the stud 14 is assembled in the threaded hole.

[0069] The bolt pad 63 includes a square hole in the axial direction, and the stud includes a square column portion with a protrusion in the center of the axial end surface. After the end of the stud is fixed to the shell of the waist support 5, the root of the square column portion abuts against the bolt pad 63, so that the gasket 61 and the spring washer 62 are tightened, and the spring washer 62 generates a rotational deformation centered on its through hole according to the deformation of the spring washer 62 to achieve an adaptive fine-tuning effect.

[0070] Or adopt another chair back feeding and fine adjustment mechanism, namely:

[0071] The feed assembly 6 includes an aluminum part 15 , a stud 14 , and a bolt washer 63 .

[0072] One end of the stud 14 is clamped on the bolt washer 63, and the bolt washer 63 is fastened to the back of the lumbar support 5. The other end of the stud 14 is fitted with a large iron washer 16 and assembled in the threaded hole of the aluminum part 15. The rear end of the aluminum part 15 is a columnar connection end, on which the middle iron washer 17, the POM damping part 18, the rubber washer 19, the middle iron washer 17, and the small iron washer 21 are stacked in sequence. The set of components is finally fixed to the rear end of the aluminum part by screws 21 to ensure that the POM is coaxial with the aluminum part, slightly increase the resistance at the rotation point, and avoid damage or accidents caused by too fast rotation of the lumbar support. At the same time, the POM damping part can also provide slight deformation, so as to achieve fine adjustment in the leaning direction.

[0073] Embodiment 3:

[0074] The seat part is supported on the star-shaped legs through the columns, and the star-shaped legs are equipped with universal wheels. The star-shaped legs are formed by bending and stretching a whole plate, which is an integrated molding method, so the whole star-shaped leg has a good load-bearing capacity and a beautiful appearance.

[0075] The star shape and columns include a star-dot paint layer, and there are two types of spray colors, one is dark dots and the other is light dots.

[0076] The main components of dark spot spraying are 70-80% polyester resin, 5-8% curing agent, 3-5% additives, 12-22% pigment, and 3-7% filler.

[0077]

[0078] The main components of light-colored spot spraying are 70-80% polyester resin, 5-8% curing agent, 3-5% additives, 10-20% pigment, and 5-10% filler.

[0079]

[0080] The embodiments of the present invention are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. Seats, including: A stool portion, a backrest, and star-shaped legs; the stool portion is supported on the supporting legs through a column; the characteristic is that the stool portion comprises: a retaining frame, a spring pad installed on the retaining frame, and a mechanism frame that clamps the spring pad with the retaining frame and connects the retaining frame to the column, which are arranged in the stool shell; The retaining frame is provided with an installation area for placing the spring pad; the spring pad generates a recoverable deformation in the force direction in the installation area as the retaining frame is subjected to the bearing force; The mechanism frame comprises: a backrest fixing portion extending toward the rear side of the seat portion for fixing the backrest; the backrest is detachably mounted on the backrest fixing portion; the backrest is adjusted in advance and retreat in the leaning direction of the waist by a feeding assembly; The star-shaped legs are formed by bending and stretching a whole plate; the star-shaped and upright columns include a star-point paint layer; The retainer comprises a disc-shaped body and a hole provided on the disc-shaped body for inserting the column; the mounting area is arranged on the disc-shaped body; a columnar protrusion is arranged in the mounting area and is inserted on the spring pad; The disc-shaped body includes a support portion protruding upward along the support direction; the support portion is arranged on both sides of the hole; the end of the column assembled in the hole is connected to the mechanism frame by an end pin assembly laterally inserted on the support portion; The pin assembly includes a T-shaped shaft; The mechanical frame is used for carrying a seat cushion and comprises a fixed end corresponding to the hole and used for docking with the column.

2. The seat according to claim 1, characterized in that: The spring pads are arranged on both axial sides of the pin shaft assembly.

3. The seat according to claim 1, characterized in that: Arranged on both sides of the hole are: a spring pad block group formed by connecting a plurality of the spring pad blocks in series through connecting ribs at the roots of the spring pad blocks.

4. The seat according to claim 1, characterized in that: The pin shaft assembly also includes an oil-containing shaft sleeve and a retaining ring.

5. The seat according to claim 1, characterized in that: The mechanism frame includes the backrest fixing portion and an armrest fixing portion extending toward both sides of the stool portion and used for fixing the armrests.

6. The seat according to claim 1, characterized in that: The feed assembly includes a gasket, an elastic gasket, an aluminum part, and a stud; the aluminum part includes a columnar clamping end for installation on the backrest; a threaded hole for assembling the stud is provided in the axial direction of the aluminum part; the gasket and the elastic gasket are stacked together and fixed to the back of the lumbar support; one end of the stud is pressed against the elastic gasket by a bolt gasket stacked on the elastic gasket and one end of the stud is fixed to the back of the lumbar support, and the other end of the stud is assembled in the threaded hole.

7. The seat according to claim 6, characterized in that: The elastic gasket comprises: an end face in contact with the gasket and an axial convex surface in contact with the bolt gasket; the elastic gasket comprises an axial through hole, and the inner wall of the through hole comprises a raised portion for defining installation; the bolt gasket overlaps the axial convex surface on the elastic gasket.

8. The seat according to claim 7, characterized in that: The feeding assembly is installed at the center position of the waist support.

9. The seat according to claim 1, characterized in that: The star point paint surface layer comprises: 70-80% polyester resin, 5-8% curing agent, 3-5% auxiliary agent, 10-22% pigment, and 3-10% filler.

10. The seat according to claim 9, characterized in that: The curing agent is TGIC in solid particle form.

11. The seat according to claim 9, characterized in that: The auxiliary agents include solid powdery ones: leveling agent and degassing agent.

12. The seat according to claim 9, characterized in that: The filler includes barium sulfate in solid powder form.

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