CN214678332U

CN214678332U - Back waist support positioning plate

Info

Publication number: CN214678332U
Application number: CN202120663369.6U
Authority: CN
Inventors: 周勤奎; 邓新元; 李亚军; 王正江; 石强; 李德山; 陆智; 李绪国
Original assignee: Borgerui Chongqing Technology Co ltd
Current assignee: Borgerui Chongqing Technology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-11-12
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses a back waist holds in palm locating plate, including the foreplate, this foreplate deflects to both sides from its middle part gradually forward, is close to its both sides limit and is provided with a set of gear piece respectively on the foreplate, and every gear piece of group is respectively along the side vertical distribution of foreplate, and is just right about two sets of gear pieces, and the distribution direction of two sets of gear pieces is parallel to each other. Compared with the prior art, the beneficial effects of the utility model are that: the waist holds in the palm the locating plate and assembles with back board, and the spout cooperation on two sets of gear piece and the waist support board plays the effect of sliding guide and location, this simple structure, the upper and lower regulation of the waist layer board of being convenient for.

Description

Back waist support positioning plate

Technical Field

The utility model belongs to the technical field of the seat structure, concretely relates to back waist holds in palm locating plate.

Background

Seat backs are often covered with foam and a cover to improve comfort. In order to meet the requirements of partial users, the seat backrest is also provided with a waist support, so that the waist of a sitting person is supported, the support performance is further improved, and the fatigue is relieved. But in order to improve the universality of the chair and meet the use requirements of users with different heights and shapes, the waist support needs to have a lifting adjusting function. The prior art discloses some waist supports that rely on an electrically driven lifting mechanism for adjustment, however, the structure is relatively complex. Chinese patent document with publication number CN209660969U discloses a seat, including chassis and backrest frame, wherein be equipped with soft backrest in the frame, be connected with the support of L type between chassis and the backrest frame, the support of this L type has vertical portion and horizontal portion, wherein horizontal portion connects in the chassis, set up the arc supporter that two horizontal directions extend in vertical portion, arc supporter both ends respectively with the frame attach, set up the sliding tray in the vertical portion, the waist holds in the palm the setting in the backrest rear side, the rear side that the waist held in the palm passes through regulating part and is connected with the sliding tray, in order to realize the upper and lower regulation of waist support. However, the lifting adjustment of the lumbar support is inconvenient, and the seat is not highly aesthetic.

SUMMERY OF THE UTILITY MODEL

In view of this, as a part of solving back waist support installation location structure, the utility model provides a back waist support locating plate.

The technical scheme is as follows:

the utility model provides a back waist holds in palm locating plate, includes the preceding backplate, and this preceding backplate deflects forward from its middle part to both sides gradually, and its key lies in, be close to its both sides limit on the preceding backplate and be provided with a set of gear piece respectively, every group gear piece respectively along the side vertical distribution of preceding backplate, two sets of gear piece is just right left, and the distribution direction of two sets of gear piece is parallel to each other.

Compared with the prior art, the beneficial effects of the utility model are that: the waist holds in the palm the locating plate and assembles with back board, and the spout cooperation on two sets of gear piece and the waist support board plays the effect of sliding guide and location, this simple structure, the upper and lower regulation of the waist layer board of being convenient for.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a rear view of FIG. 1;

FIG. 3 is a schematic structural diagram according to a second embodiment;

FIG. 4 is a right side view of FIG. 3;

FIG. 5 is an enlarged view of part a;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 7 is an enlarged view of portion b of FIG. 6;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 9 is an enlarged view of the portion c of FIG. 8;

fig. 10 is a schematic structural view of the rear back plate.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

Example one

Referring to fig. 1 and 2, a back lumbar support positioning plate comprises a front back plate which gradually deflects forwards from the middle part to two sides, so that the horizontal section of the front back plate is in a rear convex arc shape to adapt to the shape of the back of a human body. The middle part of the front back plate is provided with a window 220 so that the front back plate is in a frame shape, and the area of the window 220 is used for mounting a waist support.

The middle parts of the side frame strips on the two sides of the window 220 are both deviated forwards to form protruding sections, a group of gear blocks 210 are fixedly arranged on the rear side surface of each protruding section, and each group of gear blocks 210 are respectively and vertically distributed along the side frame strips. The two sets of gear blocks 210 are right and left opposite, and the distribution directions of the two sets of gear blocks 210 are parallel to each other.

The gear blocks 210 are toothed, roots of the gear blocks 210 in the same group are fixed on the same side of the corresponding side frame strips, tops of the gear blocks 210 in the same group extend out in the same direction back to the corresponding front back plate and then horizontally extend along the side frame strips, and a sliding limiting area is formed between the gear blocks 210 in the same group and the corresponding side frame strips.

The top of the gear block 210 is extended outward toward the window 220 area.

The gear block 210 includes a toothed gear plate 211, a plate surface of the gear plate 211 faces to the front and rear direction, and a reinforcing block 212 is integrally formed between the gear plate 211 and the side frame strip. The gear blocks 210 are integrally formed with the front plate, so that through holes 230 are respectively formed on the side frame strips corresponding to each gear block 210, so as to facilitate demolding after injection molding of the front plate.

A plurality of inserting blocks 201 are circumferentially distributed on the rear side face of the front back plate, and the front ends of all the inserting blocks 201 face downwards. Insert 201 includes picture peg 201a, and this picture peg 201 a's cross-section is L shape, and this picture peg 201a is including founding establishing the extension of stepping down of preceding backplate trailing flank, the front edge of the extension of stepping down with the preceding backplate is connected, the rear edge of the extension of stepping down extends backward and is connected with grafting portion, the vertical setting of grafting portion, its upper edge with the extension of stepping down is connected, and its lower limb extends downwards in order to form insert 201 front end.

The back side of the front back plate is further provided with a front back plate step 202, and the front back plate step 202 faces upwards. Two ends of the upper frame strip at the rear side of the front backboard are respectively provided with a front backboard step 202 which is formed by the rear side of the upper frame strip partially protruding backwards.

The back waist support positioning plate of the first embodiment is used for a seat back framework as follows.

Example two

As shown in fig. 3 and 4, a seat back frame comprises a back plate assembly, the back plate assembly comprises a back plate 100, and a lumbar support positioning plate 200 of the first embodiment is arranged in front of the back plate 100 and is in snap-fit connection with the back plate. As shown in fig. 6, the horizontal section of the back plate 100 is in the shape of a backward convex arc, and the lumbar support positioning plate 200 is adapted to the shape of the back plate 100, so as to adapt to the shape of the back of the human body and conform to the ergonomics. The frame strip of the lumbar support positioning plate 200 is attached to the front side of the backboard 100. The window 220 area forms a lumbar support adjustment area for receiving a lumbar support plate 300. The waist support plate 300 is in a strip shape.

The mounting structure of the lumbar support plate 300 and the backrest assembly is as follows: as shown in fig. 3 and 6, the two side frame strip protruding sections of the lumbar support positioning plate 200 are separated from the corresponding side edges of the back plate 100 to form two moving guide cavities 400 with two sides open, respectively, and the two side frame strip protruding sections of the lumbar support positioning plate 200 form the front walls of the moving guide cavities 400. Both ends of the waist support plate 300 are respectively extended from the inner openings of the corresponding movement guide chambers 400, and are respectively connected with the adjusting handles 330 after being extended from the corresponding outer openings. The end of the waist support plate 300 in the adjusting guide cavity 400 is adapted to the shape of the adjusting guide cavity 400, and the two side surfaces of the end of the waist support plate 300 are respectively close to the front and rear inner walls of the adjusting guide cavity 400, so as to allow the waist support plate 300 to be adjusted in a lifting manner along the moving guide cavity 400.

As shown in fig. 6, the middle portion of the lumbar support plate 300 is approximately straight, a crescent gap is formed between the lumbar support plate and the back plate 100, and the support plate 310 protrudes forward relative to the back plate 100 to support the waist of the seated person.

Two ends of the waist support plate 300 are respectively provided with a sliding groove corresponding to one set of the gear blocks 210. The two sliding grooves are located on the front side surface of the waist support plate 300, and extend along the arrangement direction of the corresponding shift blocks 210. The top of the stop block 210 extends into the corresponding sliding slot and abuts against the two side walls of the sliding slot.

The concrete structure of spout does: as shown in fig. 7, the front side surfaces of both ends of the waist support plate 300 are fixedly connected with L-shaped bending plates 301, the bending plates 301 include vertical portions vertically disposed on the front side surfaces of the end portions of the waist support plate 300, the rear side edges of the vertical portions are fixedly connected with the end portions of the waist support plate 300, the front side edges of the vertical portions are connected with parallel portions, the parallel portions are parallel to the front side surfaces of the end portions of the waist support plate 300, the outer side edges of the parallel portions are connected with the front side edges of the vertical portions, and the inner side edges of the parallel portions extend toward the middle of the waist support plate 300. Thus, the sliding groove is defined between the bending plate 301 and the end of the waist support plate 300.

As shown in fig. 5, 8 and 9, the parallel portions are located in the respective slide restraint regions. The middle part of the inner side surface of the parallel part protrudes inwards to form a positioning block 302, and the positioning block 302 is in smooth transition with the two ends of the inner side surface of the groove wall where the positioning block 302 is located.

As shown in fig. 9, the length of the sliding slot is greater than the distance between any two adjacent gear blocks 210, the sliding slot slides along the gear blocks 210, and the two side walls of the sliding slot respectively abut against the two side surfaces of the corresponding gear block 210. The positioning block 302 is in elastic interference fit with the gear block 210, the positioning block 302 moves the waist support plate 300 when sliding relative to the gear block 210, and the positioning block 302 positions the waist support plate 300 when being clamped between any two adjacent gear blocks 210. Thus, the sliding groove, the gear block 210 and the positioning block 302 constitute a self-positioning mechanism for adjusting the elevation of the waist support plate. Thereby enabling the waist support plate 300 to be positioned within the lift adjustment stroke to meet the needs of users of different body shapes.

In this embodiment, because two spout notch opposite direction of both sides, two spouts and the cooperation of the gear piece 210 of both sides to carry on spacingly to waist support plate 300 in left and right directions.

During assembly, the sliding grooves at the two ends of the waist support plate 300 are clamped on the corresponding gear blocks 210, the waist support positioning plate 200 and the waist support positioning plate 200 are assembled into a whole, and then the waist support positioning plate 200 and the back plate 100 are clamped and assembled. After the assembly is completed, a cover is mounted on the back plate assembly, and an adjusting seam is left at the position, corresponding to the outer opening of the moving guide cavity 400, of the cover, so that the waist support plate 300 leaks out. When the user needs to adjust the height of the waist support, the height of the waist support plate 300 can be conveniently adjusted by holding the adjusting handle 330.

The fastening method of the waist support positioning plate 200 and the back plate 100 is as follows: as shown in fig. 10, the back plate 100 is provided with a hanging hole 101 on the back side, the hanging hole 101 corresponds to the insertion block 201 one by one, and the hanging hole 101 has an upward opening. Each of the insertion blocks 201 is inserted into the corresponding hanging hole 101, as shown in fig. 8.

The back plate 100 is provided with a back plate step 102 corresponding to the front plate step 202, and the back plate step 102 and the front plate step 202 form a non-return structure. The insertion blocks 201 are inserted into the corresponding hanging holes 101, and the front backboard steps 202 and the back backboard steps 102 abut against each other to prevent the insertion blocks 201 from being withdrawn from the corresponding hanging holes 101.

The seat back frame of this embodiment is characterized in that the waist support plate 300 is in a hidden state with the sliding positioning fit structure of the back plate assembly, and has the advantages of good integrity and tidy appearance.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. The utility model provides a back waist holds in palm locating plate, includes the front backboard, and this front backboard deflects forward gradually from its middle part to both sides, its characterized in that: the front back plate is provided with a group of gear blocks (210) close to two side edges of the front back plate, each group of gear blocks (210) are vertically distributed along the side edge of the front back plate, the two groups of gear blocks (210) are right opposite to each other left, and the distribution directions of the two groups of gear blocks (210) are parallel to each other.

2. The back lumbar support positioning plate according to claim 1, characterized in that: a window (220) is arranged in the middle of the front back plate so that the front back plate is in a frame shape;

the two side frame strips of the front back plate are respectively provided with a group of gear blocks (210), and the two groups of gear blocks (210) are respectively positioned at two sides of the window (220).

3. The back lumbar support positioning plate according to claim 2, characterized in that: the middle parts of the side frame strips on two sides of the window (220) are offset forwards to form protruding sections, and a group of gear blocks (210) are connected to the rear side surface of each protruding section.

4. The back lumbar support positioning plate according to claim 2, characterized in that: the gear blocks (210) are toothed, the roots of the gear blocks (210) in the same group are fixed on the same side surface of the corresponding side frame strip, the tops of the gear blocks (210) in the same group extend out in the same direction back to the corresponding front back plate and then horizontally extend along the side frame strip, and a sliding limiting area is formed between the gear blocks (210) in the same group and the corresponding side frame strip.

5. The back lumbar support positioning plate according to claim 4, characterized in that: the top of the gear block (210) extends outwards away from the window (220) area.

6. The back lumbar support positioning plate according to claim 4, characterized in that: the gear block (210) comprises a toothed gear plate (211), the surface of the gear plate (211) faces the front-back direction, and a reinforcing block (212) is integrally formed between the gear plate (211) and the side frame strip.

7. The back lumbar support positioning plate according to claim 4, characterized in that: through holes (230) are respectively penetrated through the side frame strips corresponding to each gear block (210).

8. The back lumbar support positioning plate according to claim 2, characterized in that: a plurality of inserting blocks (201) are circumferentially distributed on the rear side surface of the front back plate, and the front ends of all the inserting blocks (201) are downward;

the rear side surface of the front back plate is also provided with a front back plate step (202), and the front back plate step (202) faces upwards.

9. The back lumbar support positioning plate according to claim 8, characterized in that: insert block (201) are including picture peg (201a), and the cross-section of this picture peg (201a) is L shape, and this picture peg (201a) is including founding and establishing the extension of stepping down of preceding backplate trailing flank, the front edge of the extension of stepping down with the preceding backplate is connected, the rear edge of the extension of stepping down extends backward and is connected with grafting portion, the vertical setting of grafting portion, its upper edge with the extension of stepping down is connected, and its lower limb extends in order to form insert block (201) front end.