CN211862339U - Waist rest structure of chair - Google Patents

Abstract

The utility model relates to a chair waist rest structure, which mainly forms two opposite elastic leaning ribs on the left side and the right side of a hollow-out section of a chair back frame, and makes one ends of swing arms of two waist rest pieces respectively pivoted with two side rod parts of the chair back frame, and the other end of the swing arm is movably connected with the two elastic leaning ribs of the chair back frame, therefore, when a user takes the chair assembled with the utility model, the two waist support pieces can be adjusted to the position for supporting the waist, and the back of the two waist support pieces lies on the two elastic supporting ribs of the chair back frame, when the user twists left and right, the elastic leaning rib and the waist leaning piece connected with the elastic leaning rib can generate the matched twisting adjustment action so that the back and the waist of the user can be leaned against the chair back frame and the waist leaning piece, thereby improving the comfort and the relaxation effect of the user when the user takes the chair.

Description

Waist rest structure of chair

Technical Field

The present invention relates to a chair waist rest structure, and more particularly to a chair waist rest structure capable of twisting along with the body of a user to generate a twisting adjustment action in cooperation with the body of the user, so that the back and the waist of the user can be attached to and supported by a back frame and a waist rest, thereby improving the riding comfort.

Background

The chair is a necessary article for daily life of people, when people sit on the chair, the back of the people mostly lies on the chair back, in order to enhance the supporting effect on the waist and the back, a waist support structure is additionally arranged at the chair back of the people for improving the sitting comfort of the chair, and the situation that the waist is aching and the like can not happen when the people sit on the chair for a long time.

However, most of the lumbar support structures of the existing chairs are fixedly combined with the chair back, the position of the lumbar support fixedly combined with the chair back cannot be adjusted, and the chair back plate of the existing chairs is mostly made of hard materials, so that when a user twists his body to adjust the sitting posture, the existing chair back and the lumbar support assembled on the chair back cannot be matched with the twisting of the user's body, and corresponding twisting motion and angle adjustment are generated, so that when the user twists his body left and right, one of his waist and back is far away from the chair back and the lumbar support, and the side waist and back of the user are not supported and supported, so that the user is prone to have discomfort such as soreness of waist and backache when he sits on the existing chairs.

Therefore, in view of the above shortcomings of the prior chair back design, the present inventors have studied and created the present invention by means of the manufacturing and design experiences and knowledge in the related fields over the years and by means of various ingenuity.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a chair waist rest structure, which aims to provide a chair waist rest structure that can generate matched twisting adjustment action along with the twisting of the body of a user so as to lead the back and the waist of the user to be attached to the back frame and the waist rest part and improve the riding comfort.

In order to achieve the above-mentioned purpose, the present inventor has studied a chair waist rest structure, which comprises a flexible chair back frame, a hollow area formed on the chair back frame, an elastic leaning rib formed on each of the left and right sides of the chair back frame, two elastic leaning ribs oppositely disposed and extending to the hollow area, a cushion combined with the swing arm, a first end and a second end formed on the swing arm of each waist rest, a first end of the swing arm of each waist rest pivotally connected to the left side rod of the chair back frame, and a positioning rod formed on the second end of the swing arm of each waist rest, and the end of each limit rod is formed with a clamping part, the clamping parts of the limit rods of the two waist rest pieces are respectively clamped on the limit parts of the two elastic leaning ribs of the chair back frame, each positioning rod is provided with an elastic section, a leaning part is arranged at the end of each positioning rod, and the leaning parts of the positioning rods of the two waist rest pieces are respectively leaned against the two elastic leaning ribs of the chair back frame for positioning.

The chair waist rest structure comprises a seat cushion, a back cushion and a plurality of waist rest pieces, wherein the seat cushion is provided with a back cushion, the back cushion is provided with a back cushion, and the back cushion is provided with a back cushion.

The chair waist rest structure as described above, wherein only one side of the peripheral sides of the elastic pieces of the back cushion is connected to the back cushion, and the other positions of the peripheral sides of the elastic pieces of the back cushion are separated from the back cushion.

The chair waist rest structure is characterized in that the limiting rod of the swing arm of each waist rest piece is provided with an elastic section.

In the chair lumbar structure, the two elastic abutting ribs of the backrest frame are relatively inclined gradually towards the center between the hollow areas and are arranged in an arc-shaped bulge, and the two elastic abutting ribs are both in a curve arc shape.

The chair waist rest structure comprises a first rod part and a second rod part which are opposite from each other left and right and are arranged longitudinally, and a third rod part and a fourth rod part which are opposite from each other up and down and are arranged transversely, wherein two ends of the third rod part are respectively connected with one end of the first rod part and one end of the second rod part, two ends of the fourth rod part are respectively connected with the other end of the first rod part and the other end of the second rod part, the hollow space is defined among the first rod part, the second rod part, the third rod part and the fourth rod part, the two elastic abutting ribs are defined as a first elastic abutting rib and a second elastic abutting rib, the upper end and the lower end of the first elastic abutting rib are respectively connected with the upper edge and the lower edge of the first rod part, the upper end and the lower end of the second elastic abutting rib are respectively connected with the upper edge and the lower edge of the second rod part, the first rod part and the second rod part are respectively provided with a first pivot part, the first ends of the swing arms of the two waist support parts are respectively provided with a second pivot part, and the second pivot parts of the swing arms of the two waist support parts are respectively pivoted with the first pivot parts of the first rod part and the second rod part of the chair back frame.

The chair lumbar structure as described above, wherein the first elastic abutting rib of the backrest frame includes a first downward inclined section gradually inclining downward from the upper edge of the first rod portion toward the center direction between the hollow areas, a first upward inclined section gradually inclining downward from the lower edge of the first rod portion toward the center direction between the hollow areas, a first curved section connected between the first downward inclined section and the first upward inclined section and configured to be an arc-shaped protrusion toward the center direction between the hollow areas, the second elastic abutting rib includes a second downward inclined section gradually inclining downward from the upper edge of the second rod portion toward the center direction between the hollow areas, a second upward inclined section gradually inclining upward from the lower edge of the second rod portion toward the center direction between the hollow areas, and a second curved section connected between the second downward inclined section and the second upward inclined section and configured to be an arc-shaped protrusion toward the center direction between the hollow areas, the pressing parts of the positioning rods of the two waist rest pieces are respectively pressed against the first upward inclined section of the first elastic pressing rib and the second upward inclined section of the second elastic pressing rib for positioning.

The chair lumbar support structure as described above, wherein the first pivot portion on the first rod portion and the first pivot portion on the second rod portion of the back frame are respectively located at positions corresponding to the first bending section of the first elastic abutting rib and the second bending section of the second elastic abutting rib.

The chair waist rest structure comprises a first bending section and a second bending section, wherein the first bending section of the first bending section is provided with a first limiting part which is arranged along the length direction of the first bending section, the second bending section of the second bending section is provided with a second limiting part which is arranged along the length direction of the second bending section, and the clamping parts of the limiting rods of the two waist rest pieces are respectively clamped on the first limiting part of the first elastic leaning rib and the second limiting part of the second elastic leaning rib.

The chair waist rest structure comprises a first elastic leaning rib and a second elastic leaning rib, wherein the first elastic leaning rib and the second elastic leaning rib are respectively arranged on the chair back frame, the reinforcing rib is transversely arranged between the hollow areas, two ends of the reinforcing rib are respectively connected with the first rod part and the second rod part, and the lower end of the first elastic leaning rib and the lower end of the second elastic leaning rib are respectively connected with the reinforcing rib.

Therefore, when the user takes the chair with the utility model discloses a when the equipment, can lean on the piece to adjust to supplying its waist to support and lean on the position to make its back lie and lean on two elasticity of backrest frame and support and lean on rib department, twist about user's health, this elasticity supports and leans on rib and the waist that links to each other to lean on the piece can produce the matched with and twist reverse the adjustment action, so that let its health back of user and waist can support and lean on backrest frame and waist with pasting, according to this, in order to improve comfortable, the effect of relaxing when the user takes the chair.

Drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. Wherein:

fig. 1 is an exploded perspective view of the present invention;

fig. 2 is a perspective view of the present invention;

fig. 3 is a front view of the present invention;

fig. 4 is a cross-sectional view of the present invention;

fig. 5 is a front view of the utility model in use;

fig. 6 is a sectional view showing a use state of the present invention.

The reference numbers illustrate:

1. a chair back frame;

11. a first rod portion;

111. a first pivot portion;

12. a second rod portion;

121. a first pivot portion;

13. a third rod part;

14. a fourth rod part;

15. a hollow-out section;

16. a first resilient abutment rib;

161. a first downward inclination section;

162. a first tilt-up section;

163. a first curved section;

164. a first limiting part;

17. a second resilient abutment rib;

171. a second declined section;

172. a second tilt-up section;

173. a second curved section;

174. a second limiting part;

18. a reinforcing rib;

2. a lumbar support;

21. swinging arms;

211. a second pivot portion;

212. a limiting rod;

213. positioning a rod;

214. an elastic section;

215. an elastic section;

216. a clamping portion;

217. a pressing part;

218. caulking grooves;

22. back cushion;

221. an elastic sheet.

Detailed Description

In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings.

It should be noted that, the words "up", "down", "left" and "right" indicating directions described in the present invention are only for the purpose of more clearly describing the specific structure of the twisting structure of the back frame of the present invention, and are not intended to limit the present invention in the direction of travel, wherein, as shown in fig. 3, the top in fig. 3 is "up", the bottom in fig. 3 is "down", the left side in fig. 3 is "left", and the right side in fig. 3 is "right".

First, please refer to fig. 1 to 4, which illustrate a waist rest structure of a chair of the present invention, mainly comprising a backrest frame 1 and two waist rest members 2; wherein:

the back frame 1 makes the back frame 1 flexible, the back frame 1 can be made of polypropylene, the back frame 1 comprises a first rod part 11 and a second rod part 12 which are opposite from left to right and are arranged longitudinally, and a third rod part 13 and a fourth rod part 14 which are opposite from top to bottom and are arranged transversely, two ends of the third rod part 13 and the fourth rod part 14 are respectively connected with two ends of the first rod part 11 and the second rod part 12, namely, two ends of the third rod part 13 are respectively connected with one end of the first rod part 11 and one end of the second rod part 12, two ends of the fourth rod part 14 are respectively connected with the other end of the first rod part 11 and the other end of the second rod part 12, a hollow area 15 is formed between the first rod part 11, the second rod part 12, the third rod part 13 and the fourth rod part 14, and a first elastic abutting rib 16 and a second elastic rib 17 which are opposite to each other are integrally formed on the first rod part 11 and the second rod part 12 of the back frame 1, the first elastic abutting rib 16 and the second elastic abutting rib 17 extend toward the hollow 15, and the first elastic abutting rib 16 and the second elastic abutting rib 17 are respectively located at the left side and the right side of the hollow 15, the first elastic abutting rib 16 includes a first downward inclined section 161 gradually inclining downward from the upper edge of the first rod 11 toward the center of the hollow 15, a first upward inclined section 162 gradually inclining upward from the lower edge of the first rod 11 toward the center of the hollow 15, a second downward inclined section 171 connecting between the first downward inclined section 161 and the first upward inclined section 162 and forming an arc-shaped protrusion toward the center of the hollow 15, and the second elastic abutting rib 17 includes a second downward inclined section 171 gradually inclining downward from the upper edge of the second rod 12 toward the center of the hollow 15, and a second upward inclined section 171 gradually inclining upward from the lower edge of the second rod 12 toward the center of the hollow 15 A tilted section 172 and a second curved section 173 connected between the second downward tilted section 171 and the second upward tilted section 172 and protruding in an arc shape toward the center of the hollow 15, so that the first elastic abutting rib 16 and the second elastic abutting rib 17 are in an arc shape gradually leaning toward the center of the hollow 15, and a first limit portion 164 and a second limit portion 174 along the length direction of the first curved section 163 and the second curved section 173 are formed on the first elastic abutting rib 16 and the second elastic abutting rib 17 respectively, a reinforcing rib 18 is provided below the first elastic abutting rib 16 and the second elastic abutting rib 17, the reinforcing rib 18 is horizontally provided in the hollow 15, and the left and right ends of the rib 18 are connected to the first rod portion 11 and the second rod portion 12 respectively, the lower ends of the first elastic abutting rib 16 and the second elastic abutting rib 17 are respectively connected to the left side and the right side of the reinforcing rib 18, and the first rod part 11 and the second rod part 12 are respectively provided with a first pivot part 111 and a first pivot part 121 at the positions corresponding to the first bending section 163 and the second bending section 173 of the first elastic abutting rib 16 and the second elastic abutting rib 17;

two waist rest parts 2, the waist rest part 2 comprises a swing arm 21 and a back cushion 22, the swing arm 21 is formed with a first end and a second end opposite to each other, and the first end of the swing arm 21 is provided with a second pivot part 211, so that the second pivot parts 211 of the swing arms 21 of the two waist rest parts 2 are respectively pivoted with the first pivot part 111 and the first pivot part 121 of the first rod part 11 and the second rod part 12 of the backrest frame 1, and the second end of the swing arm 21 is separated to form a limit rod 212 and a positioning rod 213, and the limit rod 212 and the positioning rod 213 are respectively formed with a wavy elastic section 214 and an elastic section 215, and the limit rod 212 is formed with a clamping part 216 at the end thereof, and the end of the positioning rod 213 is formed with a pressing part 217, so that the clamping parts 216 of the limit rods 212 of the two waist rest parts 2 are respectively clamped on the first elastic abutting rib 16 and the first elastic abutting part 164 and the second limiting rib 174 of the backrest frame 1, the pressing parts 217 of the positioning rods 213 of the two lumbar supports 2 are respectively pressed against the first upward-inclined section 162 of the first elastic pressing rib 16 and the second upward-inclined section 172 of the second elastic pressing rib 17 to be positioned, the first end of the swing arm 21 is formed with a caulking groove 218, the back cushion 22 is formed with a spring piece 221 with one side separated from the back cushion 22 and only one side connected with the back cushion 22, namely only one part of the peripheral side of the spring piece 221 is connected with the back cushion 22, the other part of the peripheral side of the spring piece 221 is separated from the back cushion 22, and the spring pieces 221 of the two back cushions 22 are respectively embedded in the caulking grooves 218 of the two swing arms 21 to be combined with the two swing arms 21.

Accordingly, when a user sits and assembles the chair of the present invention, the swing arm 21 of the waist support 2 of the present invention is pivoted to the back frame 1, please refer to fig. 5, the user can adjust the angle of the two waist supports 2 to adjust the two waist supports 2 to the position suitable for the waist to lean against, and the swing angle of the two waist supports 2 can be limited properly by the clamping part 216 of the two waist supports 2 and the clamping part of the first elastic leaning rib 16 and the second elastic leaning rib 164 and the second limiting part 174 of the back frame 1, and the pressing part 217 of the positioning rod 213 of the two waist supports 2 and the first elastic leaning rib 16 and the second elastic leaning rib 17, so that the two waist supports 2 can be positioned at the adjusted position after adjusting to the required angle, in addition, the two waist supports 2 of the present invention can be positioned according to the needs of the user, and performing left and right symmetric adjustment (as shown in fig. 3) or left and right asymmetric adjustment (as shown in fig. 5).

When a user lies on the utility model, the back of the user can contact with the first elastic leaning rib 16 and the second elastic leaning rib 17 of the backrest frame 1, and the waist of the user can lean against the back cushion 22 of the two waist leaning pieces 2, and the design of the elastic sheet 221 of the back cushion 22 can make the back cushion 22 form front and back stretching elasticity to further increase the fitness of the back cushion 22 leaning against the waist of the user. Referring to fig. 6, when the user twists and stretches his body to twist his body to the right, his right back will move backward and his left back will move forward relatively, when the right back of the user's body moves backward, the first elastic leaning rib 16 of the backrest frame 1 will be pressed backward, at this time, the second elastic leaning rib 17 of the backrest frame 1 will move forward relatively by the linkage of the third rod 13 connected with the first elastic leaning rib 16 and the second elastic leaning rib 17, so as to lean against the left back of the user's body, and the left lumbar support 2 connected with the second elastic leaning rib 17 will move forward simultaneously, so as to lean against the left waist of the user's body. Furthermore, when the user twists to the left, the left back will move backward, and the right back will move forward relatively, when the left back of the user moves backward, the second elastic leaning rib 17 of the backrest frame 1 will be pressed backward, at this time, the first elastic leaning rib 16 of the backrest frame 1 will move forward relatively by the linkage of the third rod part 13 connected with the first elastic leaning rib 16 and the second elastic leaning rib 17, so as to lean against the right back of the user, and the right waist leaning piece 2 connected with the first elastic leaning rib 16 will move forward simultaneously, so as to lean against the right waist of the user.

According to this, utilize the utility model discloses a back of the chair frame 1 twists with the user health, produces and corresponds torsional elastic design, can adjust when taking posture in the user and twist its health often, lets its health waist, back of the user can keep the obedient to lean on in back of the chair frame 1 and the back and lean on 2 states, in addition because the utility model discloses a structure is retrencied uncomplicated, consequently, can effectively improve the convenience of equipment and maintenance, and then reaches the efficiency such as man-hour of sparingly equipment and maintenance.

With the above structure and the embodiment, the present invention has the following advantages:

1. the utility model discloses a chair waist leans on the structure makes and has relative elasticity to lean on the rib in the both sides shaping of its fretwork interval of back of the chair frame, borrows this, leans on two elasticity to lean on the rib and when wriggling its health when the user lies, elasticity supports to lean on the rib and can produce the matched with adjustment action of twisting, and provides user's waist, the comfortable support of back to can not have the waist sour, back pain situation when letting the user take the chair for a long time.

2. The utility model discloses a chair waist leans on structure makes the waist to lean on the piece and utilizes its swing arm one end and back of the chair frame pin joint design to make the waist to lean on the mobile angular adjustment that carries out of piece, lean on the piece to adjust the user waist that is fit for each size to lean on the position, and this waist leans on the piece can preceding, back elasticity flexible, here, in order to let the user waist obtain good support.

3. The structure of the chair waist rest structure of the utility model is simple and uncomplicated, so the convenience of assembly and maintenance can be improved, and further the benefits of saving the working hours of assembly and maintenance can be achieved.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.

Claims (10)

1. A chair waist rest structure is characterized in that the chair waist rest structure is provided with a flexible chair back frame, a hollow area is formed on the chair back frame, the chair back frame is respectively and integrally formed with an elastic abutting rib on the left side and the right side, the two elastic abutting ribs are oppositely arranged and extend towards the hollow area, the two elastic abutting ribs are respectively positioned on the left side and the right side of the hollow area, a limiting part is respectively formed on the two elastic abutting ribs, the chair waist rest structure is further provided with two waist rest pieces, each waist rest piece comprises a swing arm and a back cushion combined with the swing arm, the swing arm of each waist rest piece is formed with a first end and a second end which are opposite, the first ends of the swing arms of the two waist rest pieces are respectively pivoted with a left side rod part and a right side rod part of the chair back frame, the second ends of the swing arms of the two waist rest pieces are respectively provided with a limiting rod and a positioning rod which are separated from each other, the end part of each limiting rod is formed with a clamping part, the clamping parts of the limiting rods of the two waist rest pieces are respectively clamped on the two elastic limit parts of the backrest frame, the two elastic limit parts abut against the limiting parts of the ribs, each positioning rod is provided with an elastic section, the end part of each positioning rod is provided with a pressing part, and the pressing parts of the positioning rods of the two waist rest pieces respectively abut against the two elastic limit parts of the backrest frame to be positioned.

2. The chair lumbar support structure of claim 1, wherein a slot is formed at the first end of the swing arm of each lumbar support, the back pad is formed with a spring, and the spring of the back pad is correspondingly embedded and combined with the slot of the swing arm.

3. The chair lumbar support structure of claim 2, wherein only one of the peripheral sides of the resilient pieces of the back pad is connected to the back pad, and the other of the peripheral sides of the resilient pieces of the back pad is separated from the back pad.

4. The chair lumbar support structure of claim 1, wherein an elastic section is formed on the stop bar of the swing arm of each lumbar support.

5. The chair lumbar support structure of claim 1, wherein the two elastic support ribs of the chair back frame are relatively inclined and arc-shaped and are raised towards the center of the hollow-out section, and both the two elastic support ribs are arc-shaped.

6. The chair waist rest structure according to claim 1, wherein the back frame comprises a first rod portion and a second rod portion which are opposite from each other and arranged longitudinally, and a third rod portion and a fourth rod portion which are opposite from each other and arranged transversely, and both ends of the third rod portion are respectively connected with one end of the first rod portion and one end of the second rod portion, both ends of the fourth rod portion are respectively connected with the other end of the first rod portion and the other end of the second rod portion, the hollowed-out area is defined by the first rod portion, the second rod portion, the third rod portion and the fourth rod portion, the two elastic abutting ribs are defined as a first elastic abutting rib and a second elastic abutting rib, the upper end and the lower end of the first elastic abutting rib are respectively connected with the upper edge and the lower edge of the first rod portion, and the upper end and the lower end of the second elastic abutting rib are respectively connected with the upper edge and the lower edge of the second elastic abutting rib, the first rod part and the second rod part are respectively provided with a first pivot part, the first ends of the swing arms of the two waist support parts are respectively provided with a second pivot part, and the second pivot parts of the swing arms of the two waist support parts are respectively pivoted with the first pivot parts of the first rod part and the first pivot parts of the second rod part of the chair back frame.

7. The chair lumbar support structure according to claim 6, wherein the first elastic support rib of the backrest frame comprises a first downward inclined section gradually inclined downward from the upper edge of the first rod portion toward the center of the hollow portion, a first upward inclined section gradually inclined upward from the lower edge of the first rod portion toward the center of the hollow portion, a first curved section connected between the first downward inclined section and the first upward inclined section and configured to be curved and convex toward the center of the hollow portion, the second elastic support rib comprises a second downward inclined section gradually inclined downward from the upper edge of the second rod portion toward the center of the hollow portion, a second upward inclined section gradually inclined upward from the lower edge of the second rod portion toward the center of the hollow portion, and a second upward inclined section connected between the second downward inclined section and the second upward inclined section and configured to be curved and convex toward the center of the hollow portion The pressing parts of the positioning rods of the two waist rest pieces are respectively pressed against the first upward inclined section of the first elastic pressing rib and the second upward inclined section of the second elastic pressing rib for positioning.

8. The chair lumbar support structure of claim 7, wherein said first pivot portion on said first bar portion and said first pivot portion on said second bar portion of said back frame are located at positions corresponding to said first curved section of said first elastic abutment rib and said second curved section of said second elastic abutment rib, respectively.

9. The chair lumbar support structure of claim 7, wherein a first limiting portion is formed on the first bending section of the first elastic support rib of the chair back frame along a length direction of the first bending section, a second limiting portion is formed on the second bending section of the second elastic support rib along a length direction of the second bending section, and the clamping portions of the limiting rods of the two lumbar support members are clamped between the first limiting portion of the first elastic support rib and the second limiting portion of the second elastic support rib, respectively.

10. The chair waist rest structure according to claim 6, wherein a reinforcing rib is arranged below the first elastic abutting rib and below the second elastic abutting rib of the back frame, the reinforcing rib is transversely arranged in the hollow area, two ends of the reinforcing rib are respectively connected with the first rod part and the second rod part, and the lower end of the first elastic abutting rib and the lower end of the second elastic abutting rib are respectively connected with the reinforcing rib.

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