CN221204698U

CN221204698U - Sliding waist rest installation positioning structure

Info

Publication number: CN221204698U
Application number: CN202322983444.9U
Authority: CN
Inventors: 张叙俊; 熊德军; 周卓蓉; 孙杰; 李建斌
Original assignee: Sunon Technology Co Ltd
Current assignee: Sunon Technology Co Ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-06-25
Anticipated expiration: 2033-11-03

Abstract

The utility model discloses a sliding lumbar support mounting and positioning structure, which comprises: the waist support and the chair back frame are symmetrically provided with accommodating parts for accommodating and installing the ends of the waist support, the accommodating parts are internally provided with mounting grooves, any one of the upper end and the lower end of each mounting groove is provided with a notch communicated with the outside, the two sides of the waist support are respectively provided with an inserting part, the inserting parts slide into the mounting grooves along the length direction of the chair back frame through the notches, the accommodating part is detachably connected with a limiting part, the inserting part of the lumbar support is provided with a limiting groove, the end of the limiting part, which is inserted into the mounting groove, forms a limiting end, and the limiting end is simultaneously positioned in the limiting groove so as to limit the sliding range of the lumbar support in the path of the limiting groove; the sliding positioning mechanism is arranged between the waist rest and the chair back frame, so that the waist rest is positioned at a required position after sliding, a turnover side cover is not required to be added to block the notch, the whole structure is simple, the demolding difficulty is low, and the assembly is simple.

Description

Sliding waist rest installation positioning structure

Technical Field

The utility model relates to the field of lumbar supports, in particular to a sliding lumbar support mounting and positioning structure.

Background

In order to pursue health and comfort, modern chairs, whether office chairs, leisure chairs or computer chairs, almost all have the waist rest which can support the waist of a user, assist the user to keep a good sitting posture when sitting for a long time and reduce physical consumption, so that the matching design between the waist rest and the chair is a very important ring in the development of the chair, the existing waist rest is a waist rest as shown in CN202022829032.6, and the main body of the waist rest is fixed on the chair back by virtue of a fixing belt; the chair with lifting lumbar support as shown in CN201721428505.3 is characterized in that the insertion block formed by bending the two ends of the lumbar support is inserted into the chute from the opening at the upper end of the chute arranged on the chair back, and the opening is blocked by the turnover fixed side cover, so that the movement range of the insertion block is limited in the chute, the lifting connection of the lumbar support is achieved, the connection mode can provide better supporting effect than the connection of the fixing belt, the fixity is also improved, but the demolding difficulty of the connecting piece and the accommodating groove is higher, and the assembly is also complex.

Therefore, a sliding lumbar support mounting and positioning structure is needed, the backrest can be stably and safely connected with the chair back, a good lumbar support effect can be provided for a user, meanwhile, the difficulty of demoulding during manufacturing is reduced, the assembly process is simplified, and meanwhile, the multi-aspect requirements of a producer and the user are met.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide the sliding lumbar support mounting and positioning structure, and the connection mode between the lumbar support and the chair back frame is optimized, so that the lumbar support can slide into the mounting groove from the notch to complete the connection with the chair back frame, the stability of integral connection is enhanced, a better supporting effect is provided, meanwhile, the manufacturing and demolding difficulty is not too high, and the assembly is simpler.

The technical scheme of the utility model is realized as follows:

a sliding lumbar mounting and positioning structure comprising:

The seat back frame is characterized in that the two sides of the seat back frame are symmetrically provided with containing parts for receiving and installing the end parts of the seat back piece, the containing parts are internally provided with mounting grooves, the mounting grooves are opened towards the center of the seat back frame, any one of the upper end and the lower end of each mounting groove is provided with a notch communicated with the outside, the two sides of the seat back piece are respectively provided with an inserting part, the inserting parts slide into the mounting grooves along the length direction of the seat back frame through the notches, the containing parts are detachably connected with limiting parts, the inserting parts of the seat back piece are provided with limiting grooves, the end of each limiting part, which is inserted into each mounting groove, is provided with a limiting end, and the limiting end is simultaneously positioned in each limiting groove so as to limit the sliding range of the seat back piece in the path of each limiting groove; a sliding positioning mechanism is arranged between the lumbar support and the chair back frame so as to position the lumbar support at a required position after sliding. During installation, the inserting part slides into the installation groove and the limiting part is clamped in, the notch is blocked without adding a turnover side cover, the whole structure is simple, the demolding difficulty is low, and the assembly is simple.

Preferably, the limiting piece is an elastic limiting piece which stretches elastically, the elastic limiting piece is fixed on the accommodating portion in advance, the end, inserted into the mounting groove, of the elastic limiting piece forms a marble, the end, sliding into the notch, of the inserting portion is provided with a slope matched with the marble, when the inserting portion is inserted into the mounting groove from the notch, the slope extrudes the marble to enable the marble to shrink, and when the marble spans across the slope, the marble is elastically reset to be inserted into the limiting groove. During installation, the inserted part only needs to be slid into the installation groove, the marble can be automatically extruded into the limit groove along the slope, other operations are not needed, and the installation steps are simple and rapid.

Preferably, the accommodating portion is provided with an internal threaded hole penetrating through the mounting groove, the limiting piece is provided with external threads, and the limiting piece is fixedly connected with the internal threaded hole in a threaded mode. The limiting piece is locked into the limiting hole to complete connection, so that the connection is stable and efficient.

Preferably, the limiting part is a limiting pin with external threads, the accommodating part is provided with an internal threaded hole penetrating through the mounting groove, and after the inserting part slides into the mounting groove, the limiting part is screwed into the internal threaded hole of the accommodating part, and meanwhile, the limiting end is also inserted into the limiting groove. The top of the limiting pin is contracted to achieve the same effect as that formed by matching the elastic positioning piece with the marble.

Preferably, the internal thread hole is further provided with a positioning step, the limiting piece is correspondingly provided with a limiting step matched with the positioning step, and the limiting piece is abutted with the positioning step after being screwed into the internal thread hole. The limiting step assists in positioning the depth of the insertion of the limiting piece, and the too shallow non-entering limiting groove or the too deep non-elastic part is prevented from being clamped into the limiting groove.

Preferably, the notch is formed at a lower end of the installation groove, and an upper end of the installation groove is closed. The inserting part is slid in from the lower end of the mounting groove, the upper end is closed to prevent the wrong operation from sliding in from the upper end during mounting, meanwhile, the integrity of the upper end of the accommodating part is ensured, and the appearance is attractive.

Preferably, the lumbar support is a plate-like body as a whole, and the lumbar support has a width greater than its height. The shape of the waist support is more in line with the bending of the waist of a user, and the elastic support is conveniently added on the front surface of the platy waist support.

Preferably, the chair back frame comprises an upper back frame, a lower back frame and two side back frames, and the accommodating part is positioned in the middle of the side back frames. Provides better supporting effect corresponding to the waist position of the user.

Preferably, the sliding positioning mechanism comprises an elastic positioning piece and a plurality of positioning teeth, wherein the positioning teeth are integrally formed in the mounting groove, and the elastic positioning piece is switched between different positioning teeth when sliding along with the insertion part and positioned in the positioning groove between the adjacent positioning teeth when stopping sliding. The waist rest can achieve the function of sliding and positioning, and the height can be adjusted according to the requirements of users.

Preferably, the positioning teeth are arranged on the groove wall of the surface of the mounting groove facing the upper limit groove of the insertion part along the length direction of the chair back frame, the elastic positioning piece is arranged on the waist support piece, the elastic positioning piece protrudes outwards from the insertion part to form a positioning part, and the positioning part is clamped into the positioning groove between the positioning teeth. The elastic locating piece is clamped into the locating groove to achieve the locating function, the waist rest height can be adjusted only by lifting or pressing the locating piece downwards with force, and the adjustment operation is simple.

Preferably, the insertion portion is provided with a placement groove, and the elastic positioning member is partially clamped into the placement groove. So that the elastic positioning member and the insertion portion remain relatively fixed.

Preferably, the elastic positioning piece is clamped into the positioning groove in a cylindrical shape and is in interference fit with the positioning groove, and the positioning part of the elastic positioning piece protruding out of the positioning groove towards the positioning tooth is a hemisphere. The shape and the interference fit of the cylinder enable the connection of the elastic locating piece and the placement groove to be stable, the matching of the locating part of the hemispheroid and the locating teeth can provide moderate damping, the hemispheroid is fixed during normal leaning, the locating part is extruded and deformed during forced lifting or downward pressing adjustment so that the locating part is separated from the locating teeth, and the lumbar support can slide.

Preferably, the placement groove is located at the edge of the insertion portion, and the placement groove side wall portion is open, and the elastic positioning piece side wall portion protrudes at the installation groove opening to form a pressing portion, and the pressing portion forms an interference fit with the installation groove side wall facing the pressing portion. The extrusion part fills the gap reserved between the waist support piece and the mounting groove for convenient mounting, so that the whole structure is more compact, and the whole shaking is reduced.

Preferably, the elastic positioning member is made of rubber. The friction force and elasticity of the rubber are moderate, the processing is simple, the cost is low, and the rubber is suitable for being used as the raw material of the elastic locating piece.

The principle and beneficial effects of the utility model adopting the technical scheme are as follows:

The utility model provides a sliding lumbar support mounting and positioning structure, which is characterized in that a limiting piece is matched and limited by a limiting groove through the matched connection of an insertion part and a mounting groove, the lumbar support is connected to a chair back frame in a sliding manner, the connection fixation and the supportability of the lumbar support are improved, the demolding difficulty is low, and the assembly process is simple.

Specifically speaking, the mounting groove is formed in the accommodating part on two sides of the chair back frame, the notch is reserved at any end of the mounting groove, the inserting part formed on two sides of the lumbar support slides into the mounting groove from the notch, and the corresponding limiting piece and the corresponding limiting groove are respectively arranged on the accommodating part and the inserting part, so that the sliding range of the lumbar support is limited in the path of the limiting groove, the notch is blocked without depending on the addition of the overturning side cover, the connecting structure is simplified, the assembly process is lightened, and meanwhile, the connecting stability and the lumbar support supportability are ensured.

Drawings

FIG. 1 is a perspective view of the front side of a sliding lumbar mounting and positioning structure;

FIG. 2 is an exploded view of the front side of the sliding lumbar support mounting and positioning structure;

FIG. 3 is a perspective view of the rear side of the sliding lumbar mounting locating structure;

FIG. 4 is an exploded view of the rear side of the sliding lumbar support mounting location structure;

FIG. 5 is a perspective view of the left side of the sliding lumbar support mounting location structure;

FIG. 6 is an exploded view of the left side of the sliding lumbar support mounting location structure;

FIG. 7 is a front perspective view of the lumbar support;

FIG. 8 is a bottom side perspective view of the lumbar support;

The reference numerals are as follows: 1-lumbar support, 2-chair back frame, 3-containing part, 4-mounting groove, 5-notch, 6-inserting part, 7-limiting part, 8-limiting groove, 9-limiting end, 10-internal threaded hole, 11-slope, the device comprises a frame body, an upper back frame, a lower back frame, a side back frame, a 14-positioning step, a 15-limiting step, a 16-elastic positioning piece, 17-positioning teeth, 18-positioning parts, 19-positioning grooves, 20-positioning grooves and 21-extrusion parts.

Description of the embodiments

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

The specific embodiments of the present utility model are as follows:

As shown in fig. 1-8, the present utility model firstly provides a sliding lumbar support mounting positioning structure, which comprises a lumbar support 1 and a chair back frame 2, wherein two sides of the chair back frame 2 are symmetrically provided with a containing part 3 for receiving and mounting the end part of the lumbar support 1, the length of the containing part 3 is about one quarter of the length of the chair back frame 2, a longitudinally extending mounting groove 4 is formed in the containing part 3, the mounting groove 4 is opened towards the surface of the center of the chair back frame 2, a notch 5 communicated with the outside is formed at any one of the upper end and the lower end of the mounting groove 4, two sides of the lumbar support 1 are respectively provided with a flat insertion part 6, the insertion part 6 completely slides into the mounting groove 4 along the length direction of the chair back frame 2 through the notch 5, a limiting part 7 is detachably connected to the containing part 3, the insertion part 6 of the lumbar support 1 is provided with a bar-shaped limiting groove 8 extending in the same direction as the mounting groove 4, the limiting part 7 is inserted into the limiting end 9 of the mounting groove 4, the limiting end 9 is simultaneously located in the limiting groove 8, the limiting groove 8 walls and the limiting groove 9 are blocked mutually, so that the sliding range of the lumbar support 1 is limited in the limiting path of the limiting groove 8; a sliding positioning mechanism is arranged between the lumbar support 1 and the chair back frame 2 to position the lumbar support 1 at a position required to be adjusted by a user after sliding.

The sliding lumbar support mounting and positioning structure is described above, and the following specific description is made for each part:

Specifically, as shown in fig. 2 or 8, the limiting member 7 is an elastic limiting member 7 that stretches elastically, an internal threaded hole 10 penetrating through the mounting groove 4 is opened on the accommodating portion 3, the limiting member 7 is provided with an external thread, the limiting member 7 is screwed into the internal threaded hole 10, the internal thread and the external thread cooperate to fix the limiting member 7 on the accommodating portion 3, the end of the limiting member 7 inserted into the mounting groove 4 forms a marble, a spring is arranged between the marble and the limiting member 7, the end of the inserting portion 6, which slides into the notch 5 first, is provided with a slope 11 that cooperates with the marble, when the inserting portion 6 is inserted into the mounting groove 4 from the notch 5, the marble firstly slides onto the slope 11 to abut against the slope 11, the slope 11 extrudes the marble to shrink, and when the marble spans the slope 11, the elastic restoring force provided by the spring ejects the marble, so that the marble is inserted into the limiting groove 8 to achieve the limiting effect.

Further, as shown in fig. 2 or 8, the limiting member 7 may be a limiting pin with external threads, the accommodating portion 3 is provided with an internal threaded hole 10 penetrating through the mounting groove 4, after the inserting portion 6 slides into the mounting groove 4, the limiting member 7 is screwed into the internal threaded hole 10 of the accommodating portion 3, and the limiting end 9 is inserted into the limiting groove 8 after being guided by the extrusion of the slope 11, so as to achieve the limiting effect.

Still further, as shown in fig. 1 or 3, the chair back frame 2 includes an upper back frame 12, a lower back frame 12, and two side back frames 13, the receiving portion 3 is located in the middle of the side back frames 13 and corresponds to the waist of the user, and the lumbar support 1 is integrally formed as a plate-shaped body, and the width of the lumbar support 1 is greater than the height thereof, so that the overall shape conforms to the ergonomics of the waist of the user.

Further, as shown in fig. 2 or 4, the notch 5 is formed at the lower end of the mounting groove 4, the upper end of the mounting groove 4 is closed, and the insertion part 6 is inserted into the mounting groove 4 from bottom to top during mounting; the internal thread hole 10 is also internally provided with a positioning step 14, a limiting step 15 matched with the positioning step 14 is correspondingly formed on the limiting piece 7, the limiting piece 7 is screwed into the internal thread hole 10, and when the limiting piece 7 is deep into a proper position, the limiting step 15 is abutted with the positioning step 14, so that the limiting piece 7 is prevented from being screwed in continuously.

Still further, as shown in fig. 1 to 4, the sliding positioning mechanism includes an elastic positioning member 16 and a plurality of positioning teeth 17, the positioning teeth 17 are arranged on a wall of the mounting groove 4 facing the limiting groove 8 on the insertion portion 6 along the length direction of the chair back frame 2 and are integrally formed with the mounting groove 4, the elastic positioning member 16 is disposed on the lumbar support member 1, a portion of the elastic positioning member 16 protruding outwards from the insertion portion 6 forms a positioning portion 18, the positioning portion 18 is clamped into the positioning groove 19 between the positioning teeth 17, and when the elastic positioning member 16 slides along with the insertion portion 6, the positioning portion 18 is switched between different positioning teeth 17 and positioned in the positioning groove 19 between adjacent positioning teeth 17 when sliding stops.

As shown in fig. 7-8, the edge of the insertion portion 6 is provided with a positioning groove 20, the side wall of the positioning groove 20 is partially open, the elastic positioning piece 16 is made of rubber, the elastic positioning piece 16 is partially clamped into the positioning groove 20, the positioning portion 18 of the elastic positioning piece 16 protruding from the positioning groove 20 towards the positioning tooth 17 is a smooth hemisphere, the portion of the elastic positioning piece 16 clamped into the positioning groove 20 is a cylinder, the side wall portion protrudes out of the opening of the mounting groove 4 to form a pressing portion 21, and the pressing portion 21 and the inner groove wall of the facing mounting groove 4 form interference fit, so that a gap between the insertion portion 6 and the mounting groove 4 is filled.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims

1. The utility model provides a slip waist is leaned on installation location structure which characterized by includes: the seat back frame is characterized in that the two sides of the seat back frame are symmetrically provided with containing parts for receiving and installing the end parts of the seat back piece, the containing parts are internally provided with mounting grooves, the mounting grooves are opened towards the center of the seat back frame, any one of the upper end and the lower end of each mounting groove is provided with a notch communicated with the outside, the two sides of the seat back piece are respectively provided with an inserting part, the inserting parts slide into the mounting grooves along the length direction of the seat back frame through the notches, the containing parts are detachably connected with limiting parts, the inserting parts of the seat back piece are provided with limiting grooves, the end of each limiting part, which is inserted into each mounting groove, is provided with a limiting end, and the limiting end is simultaneously positioned in each limiting groove so as to limit the sliding range of the seat back piece in the path of each limiting groove; a sliding positioning mechanism is arranged between the lumbar support and the chair back frame so as to position the lumbar support at a required position after sliding.

2. The sliding lumbar mounting and positioning structure of claim 1, wherein: the limiting piece is an elastic limiting piece which stretches elastically, the elastic limiting piece is fixed on the accommodating portion in advance, the end, inserted into the mounting groove, of the elastic limiting piece forms a marble, the end, sliding into the notch, of the inserting portion is provided with a slope matched with the marble, when the inserting portion is inserted into the mounting groove from the notch, the slope extrudes the marble to enable the marble to shrink, and when the marble spans across the slope, the marble is elastically reset to be inserted into the limiting groove.

3. The sliding lumbar mounting and positioning structure of claim 2, wherein: the accommodating part is provided with an internal threaded hole penetrating through the mounting groove, the limiting piece is provided with external threads, and the limiting piece is fixedly connected with the internal threaded hole in a threaded mode.

4. The sliding lumbar mounting and positioning structure of claim 1, wherein: the limiting piece is a limiting pin with external threads, the accommodating part is provided with an internal threaded hole penetrating through the mounting groove, after the inserting part slides into the mounting groove, the limiting piece is screwed into the internal threaded hole of the accommodating part, and meanwhile, the limiting end is also inserted into the limiting groove.

5. The sliding lumbar mounting and positioning structure according to claim 3 or 4, wherein: the internal thread hole is also provided with a positioning step, the limiting piece is correspondingly provided with a limiting step matched with the positioning step, and the limiting piece is abutted with the positioning step after being screwed into the internal thread hole.

6. The sliding lumbar mounting and positioning structure of claim 1, wherein: the notch is formed at the lower end of the mounting groove, and the upper end of the mounting groove is closed.

7. The sliding lumbar mounting and positioning structure of claim 1, wherein: the waist rest is a plate-shaped body, and the width of the waist rest is larger than the height of the waist rest.

8. The sliding lumbar mounting and positioning structure of claim 1, wherein: the chair back frame comprises an upper back frame, a lower back frame, two side back frames and a containing part, wherein the containing part is positioned in the middle of each side back frame.

9. The sliding lumbar mounting and positioning structure of claim 1, wherein: the sliding positioning mechanism comprises an elastic positioning piece and a plurality of positioning teeth, wherein the positioning teeth are integrally formed in the mounting groove, and the elastic positioning piece is switched between different positioning teeth when sliding along with the insertion part and positioned in the positioning groove between the adjacent positioning teeth when stopping sliding.

10. The sliding lumbar mounting and positioning structure of claim 9, wherein: the positioning teeth are arranged on the groove wall of the mounting groove facing the upper limit groove of the insertion part along the length direction of the chair back frame, the elastic positioning piece is arranged on the waist support piece, the elastic positioning piece protrudes outwards from the insertion part to form a positioning part, and the positioning part is clamped into the positioning groove between the positioning teeth.

11. The sliding lumbar mounting and positioning structure of claim 9, wherein: the insertion part is provided with a placement groove, and the elastic positioning piece is partially clamped into the placement groove.

12. The sliding lumbar mounting and positioning structure of claim 11, wherein: the part of the elastic locating piece clamped into the mounting groove is a cylinder and is in interference fit with the mounting groove, and the locating part of the elastic locating piece protruding out of the mounting groove towards the locating tooth is a hemisphere.

13. The sliding lumbar mounting and positioning structure of claim 11, wherein: the mounting groove is positioned at the edge of the insertion part, the side wall part of the mounting groove is open, the side wall part of the elastic positioning piece protrudes out of the opening part of the mounting groove to form a pressing part, and the pressing part forms interference fit with the inner groove wall of the mounting groove facing the pressing part.

14. The sliding lumbar mounting and positioning structure of claim 9, wherein: the elastic locating piece is made of rubber.