CN218635650U

CN218635650U - Waist back moving device and seat

Info

Publication number: CN218635650U
Application number: CN202222435000.7U
Authority: CN
Inventors: 罗慧平; 曹旭林; 方奇浩; 杨惠红
Original assignee: Foshan Kezhimei Furniture Co ltd
Current assignee: Foshan Kezhimei Furniture Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-03-17
Anticipated expiration: 2032-09-14

Abstract

The utility model provides a waist leans on back-and-forth movement device and seat, include: the waist back component, the back frame, the front and back moving piece and the screw rod; the waist rest component is fixed on one side of the front and rear moving parts, and the screw is in threaded connection with the opposite side of the front and rear moving parts; the back frame is provided with a limiting groove for arranging the front moving piece and the rear moving piece, and the front moving piece and the rear moving piece are provided with adjusting holes with internal thread structures; the screw rod includes the screw rod body, by the idle running section that the screw rod body is close to the coaxial extension of one end that the waist leaned on the subassembly, and form the external screw thread structure in the periphery of screw rod body, the screw rod inserts to the regulation hole and makes external screw thread structure and internal thread structure form the spiro union, rotate the screw rod and make front and back moving member along spacing groove seesaw in the screw thread within range of screw rod body, and when front and back moving member motion made internal thread structure be located idle running section scope, realize idle running when front and back moving member corresponds with idle running section. The utility model discloses make the waist lean on moving forward to set for the scope and stop the idle running and can not move forward, prevent that the waist lean on drops.

Description

Waist back moving device and seat

Technical Field

The utility model relates to the technical field of furniture, especially, relate to a back-and-forth movement device and seat are leaned on to waist.

Background

The seat is one of the most common furniture in human life and work, and with the improvement of human life and technological level, the seat is subject to continuous improvement and development, and the components of the seat are different according to different scene requirements.

Various seat waist supports on the market at present have various structures, and the position of the waist support is adjusted by basically adopting a screw rod or an expansion rod to do telescopic motion, so that the waist support is suitable for the requirements of different people on the waist support.

However, the above screw or telescopic rod structure has the disadvantage that the waist rest can fall off automatically or the backrest mesh is limited when the waist rest reaches the foremost end, the adjusting effect is poor, and the actual requirements of different users cannot be met.

SUMMERY OF THE UTILITY MODEL

To the not enough of above prior art, the utility model provides a back-and-forth movement device is leaned on to solve above-mentioned technical problem.

In order to solve the technical problem, the utility model discloses a following technical scheme:

in a first aspect, the utility model provides a waist leans on back-and-forth movement device, include: the waist back component, the back frame, the front and back moving piece and the screw rod;

the waist rest assembly is fixed on one side of the front and rear moving parts, and the screw is in threaded connection with the other opposite side of the front and rear moving parts;

the back frame is provided with a limiting groove which penetrates through the back frame and extends along the axial direction of the screw rod, and the front and rear moving parts are arranged in the limiting groove in a sliding manner;

one side of the front and rear moving piece, which is far away from the lumbar support component, is recessed along the axial direction of the screw rod to form an adjusting hole with an internal thread structure;

the screw rod comprises a screw rod body, an idle rotation section and an external thread structure, wherein the idle rotation section is coaxially extended from one end, close to the waist support assembly, of the screw rod body, the external thread structure is formed on the periphery of the screw rod body, the screw rod is inserted into the adjusting hole, the external thread structure and the internal thread structure form a threaded joint, the screw rod is rotated to enable the front and rear moving members to move back and forth along the limiting groove in the range of the thread of the screw rod body, the front and rear moving members move to enable the internal thread structure to be located in the range of the idle rotation section, and the front and rear moving members and the idle rotation section are idle when corresponding.

Preferably, the front and rear moving members include a moving member body slidably disposed in the limiting groove and a fixing portion formed by extending the moving member body, the lumbar support assembly is fixedly connected to the fixing portion, and the adjusting hole is formed in the moving member body.

Preferably, the lumbar support assembly comprises a support fixed to the fixing portion, a sliding piece sleeved on the support and a lumbar support fixed to one side, far away from the front moving piece and the rear moving piece, of the support, and the sliding piece is clamped between the support and the lumbar support.

Preferably, be equipped with the screw hole on the moving member body, the waist leans on the subassembly still to include first screw, first screw passes in proper order the slider with the support frame and with the screw hole forms fixedly.

Preferably, the lumbar support assembly further comprises a plurality of second screws, and the lumbar support and the support frame are fixed through the plurality of second screws.

Preferably, the support frame includes the support frame body, by the support frame body is close to one side that the waist leaned on extends the sliding part that forms, by the sliding part is close to spacing portion that one side that the waist leaned on formed and by spacing portion is to being close to the waist leans on the spacing post that the direction extension formed, the diameter of sliding part is close to by it the one end of support frame body is kept away from to it support frame body one end reduces gradually, the slider cover is located on the sliding part, the waist is by the cover locate spacing post and with spacing portion butt.

Preferably, the waist back-and-forth movement device further comprises a knob, the knob is located on one side, away from the waist back assembly, of the back frame and abuts against the back frame, and the knob is fixedly connected with one end, away from the idle rotation section, of the screw rod body.

Preferably, the screw further comprises a connecting section extending from one end of the screw body far away from the idle section and a limiting ring wall extending from the periphery of the connecting section in a protruding manner, and the back frame is provided with an annular limiting ring groove matched with the limiting ring wall; when the screw penetrates through the back frame and is inserted into the adjusting hole, the wall of the limiting ring is clamped in the limiting ring groove; the knob is fixed at one end, far away from the screw body, of the connecting section.

Preferably, the waist rest back-and-forth movement device further comprises a knob cover, and the knob cover is arranged on the knob.

In a second aspect, an embodiment of the present invention provides a seat, including the above-mentioned lumbar support back-and-forth moving device.

Compared with the prior art, in the embodiment of the utility model, the waist rest component is fixed on one side of the front and rear moving parts, and the screw rod is screwed on the opposite side of the front and rear moving parts; the back frame is provided with a limiting groove which penetrates through the back frame and extends along the axial direction of the screw rod, and the front moving piece and the rear moving piece are arranged in the limiting groove in a sliding mode; one side of the front and rear moving piece, which is far away from the waist rest component, is recessed along the axial direction of the screw rod to form an adjusting hole with an internal thread structure; the screw rod includes the screw rod body, by the idle rotation section that the screw rod body is close to the coaxial extension of one end of waist by the subassembly, and form the external screw thread structure in the periphery of screw rod body, the screw rod inserts in the adjusting hole and makes external screw thread structure and internal thread structure form the spiro union, rotate the screw rod and make front and back moving member along spacing groove seesaw in the screw range of screw rod body, and front and back moving member motion makes internal thread structure be located idle rotation section scope when, realize idle rotation when front and back moving member corresponds with idle rotation section. The external thread structure drives the internal thread structure to move the front and back moving piece in the limiting groove through the rotation of the screw rod, so that the waist rest is moved forward to a set range, stops at an idle running and cannot move forward, the waist rest is prevented from falling off, the adjusting effect is good, and the safety is high.

Drawings

The present invention will be described in detail with reference to the accompanying drawings. The foregoing and other aspects of the invention will become more apparent and more readily appreciated from the following detailed description, taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 is a schematic structural view of a back-and-forth movement device of a lumbar support in an embodiment of the present invention;

FIG. 2 is an exploded view of the back-and-forth moving device of the lumbar support according to the embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the front and rear moving members and the screw rod of the embodiment of the present invention;

fig. 4 is a schematic structural view of the supporting frame in the embodiment of the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 1;

FIG. 6 is an enlarged view of a portion A1 of FIG. 5;

fig. 7 is a schematic view of the movement state of the back-and-forth movement device of the waist support in the embodiment of the present invention;

FIG. 8 is an enlarged view of part B of FIG. 7;

fig. 9 is a partial enlarged view of B1 of fig. 8.

The waist rest comprises a waist rest component 1, a waist rest component 11, a support frame 111, a support frame body 112, a sliding part 113, a limiting part 114, a limiting column 12, a sliding part 13, a waist rest, a back frame 2, a back frame 21, a limiting groove 22, a limiting ring groove 3, a front moving part 31, a back moving part body 32, a fixing part 33, an internal thread structure 34, an adjusting hole 4, a screw rod 41, a screw rod body 42, an external thread structure 43, an idle section 44, a connecting section 45, a limiting ring wall 5, a first screw 6, a second screw 7, a third screw 8, a knob 9, a knob cover 10 and a screw hole.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, an embodiment of the present invention provides a back-and-forth moving device for a lumbar support, including: a lumbar support component 1, a back frame 2, a front and rear moving piece 3 and a screw rod 4.

The waist rest component 1 is fixed on one side of the front and rear moving piece 3, and the screw rod 4 is screwed on the opposite side of the front and rear moving piece 3. The front and rear moving piece 3 is driven by the rotating screw rod 4 to move back and forth, so that the effect of back and forth movement adjustment of the waist rest component 1 is realized, and the operation is convenient.

The back frame 2 is provided with a limiting groove 21 which penetrates through the back frame and extends along the axial direction of the screw rod 4, and the front and rear moving members 3 are arranged in the limiting groove 21 in a sliding mode. The front and rear moving piece 3 is limited to rotate, and the front and rear moving piece 3 can move back and forth in the rotating process of the screw rod 4 conveniently. Preferably, the back frame 2 is also used to support the front and rear moving members 3, the screw 4 and the knob 8.

The side of the front and rear moving piece 3 far away from the lumbar support assembly 1 is recessed along the axial direction of the screw rod 4 to form an adjusting hole 34 with an internal thread structure 33.

The screw rod 4 comprises a screw rod body 41, an idle rotation section 43 and an external thread structure 42, wherein the idle rotation section 43 is formed on the periphery of the screw rod body 41, the screw rod body 41 is close to one end of the lumbar support assembly 1 and coaxially extends, the screw rod 4 is inserted into the adjusting hole 34, the external thread structure 42 and the internal thread structure 33 form a threaded connection, the screw rod 4 is rotated to enable the front and rear moving members 3 to move back and forth along the limiting groove 21 in the range of the thread of the screw rod body 41, and when the front and rear moving members 3 move to enable the internal thread structure 33 to be located in the range of the idle rotation section 43, the front and rear moving members 3 and the idle rotation section 43 realize idle rotation when corresponding to each other.

Specifically, the screw body 41 is rotatably arranged in the limiting groove 21, the screw body 41 is rotationally driven to rotate, the external thread structure 42 is matched with the internal thread structure 33 to drive the front and rear moving members 3 to move back and forth through rotation of the screw body 41, and when the front and rear moving members 3 move to enable the internal thread structure 33 to be located in the range of the idle section 43, the front and rear moving members 3 and the idle section 43 are idle when corresponding to each other. Therefore, the lumbar support component 1 can be moved forward to a set range, stopped for idling and can not move forward, the lumbar support component 1 is prevented from falling off, the adjusting effect is good, and the safety is high.

In this embodiment, the front and rear moving member 3 includes a moving member body 31 slidably disposed in the limiting groove 21 and a fixing portion 32 formed by extending the moving member body 31, the lumbar support assembly 1 is fixed to the fixing portion 32, and the adjusting hole 34 is formed in the moving member body 31. Move the piece body 31 through the rotatory drive of screw rod 4 and move back-and-forth in spacing groove 21, lean on subassembly 1 fixed connection through fixed part 32 and waist for the waist leans on subassembly 1 can carry out the back-and-forth movement when screw rod 4 is rotatory, thereby is convenient for adjust the position that the waist leaned on subassembly 1, convenient operation.

Preferably, the fixing portion 32 is formed by the moving member body 31 in a direction approaching the lumbar assembly 1, so as to fixedly mount the lumbar assembly 1. The adjustment hole 34 is formed on the side of the moving member body 31 close to the screw 4.

Preferably, the moving member body 31 is configured in a non-circular structure, and the limiting groove 21 is matched with the periphery of the moving member body 31. For example, the moving member body 31 has a rectangular structure, a triangular structure, a parallelogram structure, etc., and has a good mutual spacing effect, so as to avoid rotation along with the rotation of the screw rod 4, and the position of the waist rest 13 is well spaced.

In this embodiment, as shown in fig. 1 to 4, the lumbar support assembly 1 includes a support frame 11 fixed to the fixing portion 32, a sliding member 12 sleeved on the support frame 11, and a lumbar support 13 fixed to a side of the support frame 11 away from the front-rear moving member 3, wherein the sliding member 12 is interposed between the support frame 11 and the lumbar support 13. The sliding part 12 is used for pressing the supporting frame 11 and is fixed on the moving part body 31. The front and rear moving piece 3 moves back and forth to drive the support frame 11 to move, so that the waist rest 13 is driven to move back and forth, and the screw rod 4 is driven to rotate to realize idle rotation when the idle rotation section 43 corresponds to the internal thread structure 33; therefore, the waist support 13 can be moved forward to a set range, stopped idle and can not move forward, the waist support 13 is prevented from falling off, and the adjusting effect is good.

In this embodiment, as shown in fig. 1 to 4, the moving member body 31 is provided with a screw hole 10, the lumbar support assembly 1 further includes a first screw 5, and the first screw 5 sequentially penetrates through the sliding member 12 and the supporting frame 11 and is fixedly connected to the screw hole 10. By placing the slider 12 on the support frame 11, the slider 12 and the support frame 11 are well fixed to the front and rear moving members 3 by the first screws 5 engaging with the screw holes 10. Meanwhile, the screw connection is convenient to detach and install.

In this embodiment, as shown in fig. 1-2, the lumbar support assembly 1 further includes a plurality of second screws 6, and the lumbar support 13 and the support frame 11 are fixed by the plurality of second screws 6. The second screws 6 are connected to facilitate the disassembly and assembly of the lumbar support 13.

In this embodiment, as shown in fig. 1 to 4, the support frame 11 includes a support frame body 111, a sliding portion 112 formed by extending a side of the support frame body 111 close to the lumbar support 13, a limiting portion 113 formed by extending a side of the sliding portion 112 close to the lumbar support 13, and a limiting post 114 formed by extending the limiting portion 113 in a direction close to the lumbar support 13, a diameter of the sliding portion 112 gradually decreases from one end of the sliding portion close to the support frame body 111 to one end of the sliding portion away from the support frame body 111, the sliding member 12 is sleeved on the sliding portion 112, and the lumbar support 13 is sleeved on the limiting post 114 and abuts against the limiting portion 113. The support frame body 111 is fixed on the front and rear moving members 3, and the waist rest 13 is fixed on the limiting column 114 in a limiting way, so that the installation is convenient.

In this embodiment, as shown in fig. 1 to 4, the lumbar support forward-backward moving device further includes a knob 8, the knob 8 is located on a side of the back frame 2 away from the lumbar support assembly 1 and abuts against the back frame 2, and the knob 8 is fixedly connected to one end of the screw body 41 away from the idle rotation section 43.

Specifically, the screw body 41 is rotatably arranged in the limiting groove 21, the knob 8 is rotated to drive the screw body 41 to rotate, the external thread structure 42 is matched with the internal thread structure 33 to drive the front and rear moving members 3 to move back and forth through rotation of the screw body 41, and when the knob 8 rotates to drive the screw 4, the idle rotation section 43 is idle when corresponding to the internal thread structure 33. Therefore, the waist support 13 can be moved forward to a set range, stopped for idling and can not be moved forward, the waist support 13 is prevented from falling off, the adjusting effect is good, and the safety is high.

In this embodiment, as shown in fig. 1 to 6, the screw rod 4 further includes a connecting section 44 extending from one end of the screw rod body 41 away from the idle section 43 and a limiting ring wall 45 extending from the outer periphery of the connecting section 44 in a protruding manner, and the back frame 2 is provided with a limiting ring groove 22 in an annular shape matching with the limiting ring wall 45; when the screw rod 4 penetrates through the back frame 2 and is inserted into the adjusting hole 34, the limiting ring wall 45 is clamped in the limiting ring groove 22; the knob 8 is fixed at one end of the connecting section 44 far away from the screw body 41. Through the cooperation setting of spacing rampart 45 and spacing annular 22 for the restriction screw rod body 41 slides along the axial, the good reliability. Meanwhile, the limiting ring groove 22 supports the limiting ring wall 45, so that the screw body 41 is more stable and labor-saving when rotating. The connecting section 44 is fixedly connected with the knob 8, so that the knob 8 can rotate to adjust the screw body 41.

In this embodiment, as shown in fig. 1-2, the knob 8 is fixedly connected to the screw rod 4 through a third screw 7. The screw rod 4 and the knob 8 are well fixed and are convenient to disassemble and assemble.

Preferably, the connecting section 44 of the screw rod 4 is fixedly connected with the knob 8 through a third screw 7.

In this embodiment, as shown in fig. 1-2, the lumbar support 13 forward and backward moving device further includes a knob cover 9, and the knob cover 9 is covered on the knob 8.

In the present embodiment, the idle section 43 is of cylindrical configuration, as shown in fig. 1-4. The idle running is conveniently realized, so that the screw rod 4 stops to idle in a set range and cannot move forwards.

The utility model discloses an assembly specifically as follows:

the sliding part 12 is placed on the supporting frame 11 and fixed on the front and rear moving parts 3 of the lumbar 13 through the first screws 5. Fixing the waist rest 13 on the support frame 11 by two second screws 6, screwing the screw rod 4 into the front and rear moving members 3 of the waist rest 13, penetrating the whole mounted assembly through the back frame 2, penetrating the third screw 7 through the knob 8 to be connected with the screw rod 4, and finally covering the knob cover 9 on the knob 8. The screw rod 4 is driven by the knob 8, the waist rest 13 is moved forwards through threads, and the waist rest can not move forwards when being stopped and idled within a set range, so that the idle control effect is good, and the use is convenient.

In this embodiment, as shown in fig. 1 and 5-6, the screw rod 4 and the front and rear moving member 3 are located at the rightmost side, the supporting frame 11 and the front and rear moving member 3 are fixed, the fixing portion 32 of the front and rear moving member 3 is in contact with the back frame 2, and at this time, the back-and-forth movement device is in the original state.

As shown in fig. 7-9, the screw rod 4 and the front and rear moving members 3 are positioned at the leftmost side, the supporting frame 11 and the front and rear moving members 3 are fixed, the fixing part 32 of the front and rear moving members 3 is far away from the back frame 2, and at this time, the waist back front and rear moving device is in a moving state. When the idle rotation section 43 corresponds to the internal thread of the front and rear moving parts 3, the waist rest 13 can be moved forward to a set range, and the waist rest is stopped and idle and cannot move forward, so that the waist rest 13 is prevented from falling off, the adjusting effect is good, and the safety is high.

Example two

An embodiment of the utility model provides a seat, including above-mentioned embodiment one the waist lean on back-and-forth movement device.

It should be noted that the above-mentioned embodiments described with reference to the drawings are only intended to illustrate the present invention and not to limit the scope of the present invention, and those skilled in the art should understand that modifications or equivalent substitutions made on the present invention without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, unless the context indicates otherwise, words that appear in the singular include the plural and vice versa. Additionally, all or a portion of any embodiment may be utilized with all or a portion of any other embodiment, unless stated otherwise.

Claims

1. A lumbar support forward and backward moving device, comprising: the waist back component, the back frame, the front and back moving parts and the screw rod;

the waist rest assembly is fixed on one side of the front and rear moving piece, and the screw is in threaded connection with the opposite side of the front and rear moving piece;

the back frame is provided with a limiting groove which penetrates through the back frame and extends along the axial direction of the screw rod, and the front and rear moving pieces are arranged in the limiting groove in a sliding manner;

2. The lumbar support front-and-back movement device according to claim 1, wherein the front-and-back movement member comprises a movement member body slidably disposed in the limiting groove and a fixing portion formed by extending the movement member body, the lumbar support assembly is fixedly connected to the fixing portion, and the adjusting hole is formed in the movement member body.

3. The lumbar support back-and-forth movement device according to claim 2, wherein the lumbar support assembly comprises a support frame fixed to the fixing portion, a sliding member sleeved on the support frame, and a lumbar support fixed to a side of the support frame away from the front and rear moving members, the sliding member being interposed between the support frame and the lumbar support.

4. The lumbar support back-and-forth movement device according to claim 3, wherein a screw hole is formed on the moving member body, and the lumbar support assembly further comprises a first screw which sequentially passes through the sliding member and the support frame and is fixed with the screw hole.

5. The lumbar support forward-backward movement device according to claim 3, wherein the lumbar support assembly further comprises a plurality of second screws, and the lumbar support and the support frame are fixed by the plurality of second screws.

6. The device for moving a lumbar support back and forth according to claim 3, wherein the support frame comprises a support frame body, a sliding portion formed by extending one side of the support frame body close to the lumbar support, a limiting portion formed by extending one side of the sliding portion close to the lumbar support, and a limiting column formed by extending the limiting portion in a direction close to the lumbar support, wherein the diameter of the sliding portion is gradually reduced from one end of the sliding portion close to the support frame body to one end of the sliding portion far away from the support frame body, the sliding member is sleeved on the sliding portion, and the lumbar support is sleeved on the limiting column and abutted against the limiting portion.

7. The lumbar support front-and-back movement device according to claim 1, further comprising a knob, wherein the knob is located on one side of the back frame away from the lumbar support assembly and abuts against the back frame, and the knob is fixedly connected with one end of the screw body away from the idle rotation section.

8. The device for moving a lumbar support forward and backward according to claim 7, wherein the screw further comprises a connecting section extending from one end of the screw body away from the idle section and a limiting ring wall protruding from the outer periphery of the connecting section, and the back frame is provided with an annular limiting ring groove matched with the limiting ring wall; when the screw penetrates through the back frame and is inserted into the adjusting hole, the wall of the limiting ring is clamped in the limiting ring groove; the knob is fixed at one end, far away from the screw rod body, of the connecting section.

9. The lumbar support forward-backward moving device according to claim 8, further comprising a knob cover, wherein the knob cover is disposed on the knob.

10. A seat comprising a lumbar support forward and backward movement device according to any of claims 1-9.