CN213282251U

CN213282251U - Pull wire control assembly and waist rest adjusting mechanism

Info

Publication number: CN213282251U
Application number: CN202020820388.0U
Authority: CN
Inventors: 吕成纲; 程军
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-05-28
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a stay wire control assembly and a waist rest adjusting mechanism, wherein the stay wire control assembly comprises a base, a stay wire seat and a control handle which is convenient for being held by hands; the control handle is rotatably connected with the base through a rotating shaft, the control handle is perpendicular to the rotating shaft, the pull wire seat and the control handle synchronously rotate, a movable groove is arranged in the base and provided with an unlocking position and a locking position, an arc clamping part is arranged on the outer surface of the pull wire seat, an arc clamping groove in clamping fit with the clamping part is correspondingly arranged at the locking position, and when the pull wire seat rotates from the unlocking position to the locking position, the clamping part is in clamping fit with the arc clamping groove; the waist rest adjusting mechanism comprises an elastic waist rest plate for supporting the waist of a human body, a pull wire, a back plate and the pull wire control assembly; when the pulling of the pulling wire is controlled, the pulling wire seat is rotated to the locking position only by rotating the control handle, the control handle is not required to be rotated for multiple circles, and the pulling wire can have enough movement stroke; then, the waist can be quickly adjusted to support the waist.

Description

Pull wire control assembly and waist rest adjusting mechanism

Technical Field

The utility model relates to a seat control technical field that acts as go-between, in particular to control subassembly and waist lean on adjustment mechanism by acting as go-between.

Background

As daily furniture for work and study of people, the chair is used for a long time of sitting and working, the spine of a human body is naturally bent, particularly the bending at the lumbar vertebra is more important, the lumbar vertebra is easily bent outwards when the chair is in a sitting posture for a long time, and the isosceles lumbar disc herniation is easily caused as long as the chair is in a long time. As is well known, the spine of a human body is S-shaped, and therefore, a waist rest is additionally arranged at the backrest of most office chairs so as to support the natural bending part of the lumbar vertebra, prevent the lumbar vertebra from bending outwards due to fatigue and ensure the health of the lumbar vertebra of office staff.

In practical application, however, the body types of people are in diversified distribution of tall, short, fat and thin, so that the lumbar support at the fixed position is difficult to adapt to people with different body types, and the existing lumbar support has single structure function and cannot adapt to various requirements; for example, some people have waist pain, the waist support needs to be thickened to realize the waist supporting function so as to facilitate the extrusion massage of the pain part when sitting and leaning on, but some people do not need too thick waist support, and the waist support can be properly supported when sitting and leaning on; therefore, the structure is provided, wherein the structure is connected with the elastic lumbar support plate through the pull wire, and the pull wire is stretched to pull the elastic lumbar support plate to realize the change of the thickness of the lumbar support; however, some of the pull wire control mechanisms in the prior art on the market drive the pull wire through the drive bolt, so that the pull wire can be dragged only by rotating the drive handle for multiple circles, which is laborious; or like a spanner for controlling the stay wire by the seat chassis, the spanner is pulled to stretch the stay wire, but the movement stroke of the stay wire is short, and the stay wire can be stretched only in a short distance, so that the deformation range of the waist rest is limited.

The chinese utility model of CN201320174298.9 discloses a "chair lumbar support", which comprises an elastic frame, an adjusting component, a flexible supporting component, and a longitudinal elastic component located at the rearmost side of the frame, wherein the elastic force provided by the longitudinal elastic component is much smaller than the elastic force of the frame, the adjusting component comprises a driver and at least one inhaul cable, the driving end of the inhaul cable is connected with the driver, and the load end of the inhaul cable is directly or indirectly connected with the frame; the driver drives the steel wire rope of the inhaul cable to move, so that the frame connected with the inhaul cable is driven to move, and the waist supporting effect of the waist support is adjusted. Although this waist is by can draw elastic frame through pulling the cable and realize the waist effect of waist support, what adopt is that the bolt stretches the cable with nut relative motion's mode, leads to needing many rings of rotatory drive handle to reach the effect, wastes time and energy.

Disclosure of Invention

The utility model overcomes exist not enough among the above-mentioned prior art, provide a simple and practical, convenient operation's control assembly that acts as go-between, this control assembly that acts as go-between rotates around the base through brake valve lever in order to drive the seat of acting as go-between and rotate, is equipped with movable groove in the base, movable groove have the unblock position and lock positioning, only need rotate brake valve lever make the seat of acting as go-between move to the lock positioning can, guarantee the motion stroke of acting as go-between and operate swiftly laborsaving.

Then, the waist rest adjusting mechanism is provided, one end of the stay wire is connected with the stay wire seat, the other end of the stay wire is matched with the movable end of the elastic waist rest plate in a clamping mode, the stay wire can be stretched by rotating the control handle to enable the movable end of the elastic waist rest plate to deform, and the waist rest effect is achieved.

The technical scheme of the utility model is realized like this:

a stay wire control assembly comprises a base, a stay wire seat for connecting a stay wire and a control handle convenient for being held by hands; control handle rotate with the base through the pivot and be connected, control handle and pivot be mutually perpendicular, just stay wire seat and control handle rotate in step the base in be equipped with movable groove, movable groove have the position of unblock and lock the position, the surface of stay wire seat on be equipped with curved joint portion lock position department correspond be equipped with joint portion joint complex arc draw-in groove, when stay wire seat by unblock position rotate when locking the position, joint portion and the cooperation of arc draw-in groove joint. When the stay wire is controlled, the stay wire seat is rotated to the locking position only by rotating the control handle, the control handle is not required to be rotated for multiple circles, the stay wire can be rotated once, and the stay wire can have enough movement stroke.

Preferably, a rotating shaft mounting seat is arranged on one side of the base and fixedly connected with the base, and the rotating shaft penetrates through the base from the other side of the base and is rotatably connected with the rotating shaft mounting seat.

Preferably, the rotating shaft is a four-corner rotating shaft, one end part of the rotating shaft is a cylinder, the cylinder is rotatably connected with the rotating shaft mounting seat, and the other end of the rotating shaft is fixedly connected with the control handle. The rotating shaft is fixedly connected with the control handle through screws after being clamped, and the rotating shaft can be driven to rotate by rotating the control handle.

Preferably, the wire pulling seat is connected with a rotating part, the base is internally provided with a containing groove, the rotating part is positioned in the containing groove, the rotating shaft penetrates through the base and the rotating part, and the rotating part and the rotating shaft rotate synchronously. The stay wire seat realizes synchronous rotation with the rotating shaft through the rotating part.

Preferably, the base is provided with a first wire guide hole, and the first wire guide hole is communicated with the movable groove.

Preferably, the rotation range of the control handle is 0-120 degrees.

A waist rest adjusting mechanism comprises an elastic waist rest plate for supporting the waist of a human body, a pull wire, a back plate and the pull wire control assembly; the elastic waist support plate is provided with a movable end and a fixed end, the fixed end is connected with the back plate, and the movable end deforms under the traction action of the stay wire; one end of the stay wire is in clamping fit with the movable end of the elastic waist rest plate, and the other end of the stay wire penetrates through the first stay wire guide hole to be connected with the stay wire seat.

Preferably, the upper end of the elastic lumbar support is a movable end, and the lower end of the elastic lumbar support is a fixed end.

Preferably, a longitudinal supporting plate is arranged in the middle of the bottom of the elastic waist backing plate and located at the rear end of the elastic waist backing plate, a guide block is arranged at the upper end of the supporting plate, a second stay wire guide hole is formed in the guide block, and a stay wire penetrates through the second stay wire guide hole to be in clamping fit with the upper end of the elastic waist backing plate. The supporting plate enables the stay wire to be stressed and stretched, and the middle position of the elastic waist support plate is always kept to be vertical and downward traction force.

Preferably, a wire pulling sleeve is arranged outside the wire pulling, the upper end of the wire pulling sleeve is connected in the second wire pulling guide hole, and the lower end of the wire pulling sleeve is connected in the first wire pulling guide hole.

Preferably, two ends of the elastic waist back plate are respectively bent backwards to form an upper bending part and a lower bending part, an upper connecting plate and a lower connecting plate extend from two sides of the upper bending part and the lower bending part to the middle position of the elastic waist back plate, and the lower connecting plate is connected and fixed on the back plate.

Preferably, the base is fixed on the back plate in a connecting way. The connection can be more convenient for the control of human hand on the backplate.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the utility model provides a pull line control component and a waist rest adjusting mechanism, compared with the prior art,

1, the movement stroke of the pull wire is met, and the movement stroke of the pull wire is not shortened by adopting a mode of controlling a handle; the control handle is rotated to enable the stay wire seat to rotate along the arc length with a longer distance, so that the movement stroke of the stay wire is long enough, and the problem that the adjustment stroke of the spanner stay wire adjusting mechanism is short is solved.

2, the mechanism is simple and ingenious, the rotating shaft drives the wire pulling seat to rotate synchronously by controlling the rotation of the handle, and the operation is more labor-saving and the holding is more convenient when being controlled differently from the traditional spanner; and the movable groove is internally provided with an unlocking position and a locking position, so that the stay wire seat can be locked after rotating or reset by reversely rotating only by rotating the control handle.

3, easily installation, can the different seats of adaptation, during the installation only need with pedestal connection on the backplate can, through screwed connection, need not specific structure, the installation is quick, the suitability is high, and the acting as go-between only need the card go-between the seat in can, connect swiftly.

4, the waist rest adjusting mechanism of the pull line control assembly is adopted, and the waist rest adjusting operation is simple, convenient and labor-saving; when the waist is required to be supported, the control handle is only required to be rotated to enable the pull wire seat to rotate from the unlocking position to the locking position, and the pull wire seat can be automatically locked, so that the operation is rapid and rapid; force is applied to the handle, so that the handle is light and labor-saving; secondly, because the motion stroke of the stay wire is enough, the waist rest of the elastic waist rest board can generate enough deformation, and the waist supporting effect is better.

Drawings

Fig. 1 is a schematic perspective view of a connection structure between a pull-wire control assembly and a pull wire according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of the connection between the base and the rotating shaft according to the embodiment of the present invention;

FIG. 3 is a schematic view of another angle of the base connected to the rotating shaft according to the embodiment of the present invention;

fig. 4 is a schematic perspective view of the control handle of the embodiment of the present invention after rotating;

fig. 5 is a schematic perspective view of the bottom of the base according to the embodiment of the present invention;

fig. 6 is a schematic perspective view of the connection between the control handle and the rotating shaft according to the embodiment of the present invention;

fig. 7 is a schematic perspective view of the connection between the elastic waist back plate and the stay wire according to the embodiment of the present invention;

fig. 8 is a schematic perspective view of the pull string control assembly and the elastic waist back plate according to the embodiment of the present invention;

fig. 9 is a schematic perspective view of the process of rotating the control handle to pull the elastic waist back plate according to the embodiment of the present invention;

fig. 10 is a schematic perspective view illustrating the elastic waist back plate after the control handle is rotated to deform the elastic waist back plate according to the embodiment of the present invention;

fig. 11 is a schematic perspective view of a lumbar support adjusting mechanism in an embodiment of the present invention;

fig. 12 is a schematic perspective view of an elastic waist back plate according to an embodiment of the present invention.

The figures are numbered: a base 1; mounting screws 1 a; a stay wire 2; a wire pulling seat 3; a control handle 4; a rotating portion 4 a; a handle 4 b; a rotating shaft 5; a cylinder 5 a; a hexagonal pillar 5 b; a connecting screw 5 c; a rotating shaft mounting seat 6; a connecting cover plate 6 a; a sleeve 6 b; a rotating member 7; a housing tank 8; a movable groove 9; a first wire guiding hole 10; a chuck 11; a first cord engaging groove 12; an unlocking bit 13; a locking position 14; a clip portion 15; an arc-shaped clamping groove 16; an elastic waist back plate 17; a back plate 18; a movable end 17 a; a fixed end 17 b; an upper bent portion 19; a lower bent portion 20; an upper connecting plate 19 a; a lower connecting plate 20 a; a support plate 21; a guide block 22; a second wire guide hole 23; a pull-cord sleeve 24; and a second wire retaining groove 25.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

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

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1-6, the present invention provides a pull-string control assembly, which comprises a base 1, a pull-string seat 3 for connecting a pull-string 2, and a control handle 4 for facilitating the holding of a human hand.

As shown in fig. 2, 3 and 6, the control handle 4 is rotatably connected to the base 1 through a rotating shaft 5, the control handle 4 is perpendicular to the rotating shaft 5, the rotating shaft 5 is a four-corner rotating shaft, and one end of the rotating shaft 5 is a cylinder 5 a; a rotating shaft mounting seat 6 is arranged on one side of the base 1, the rotating shaft mounting seat 6 comprises a connecting cover plate 6a and a sleeve 6b, the sleeve 6b is arranged on the base 1 in a penetrating mode, and the cover plate 6a is fixedly connected to the side wall of the base 1 through screws; one end of the rotating shaft 5 with a cylinder 5a penetrates through the base 1 from the other side of the base 1 to be connected with the rotating shaft mounting seat 6, and the cylinder 5a is rotatably connected with the sleeve 6 b. The other end of pivot 5 is outstanding in base 1, and the protruding portion of pivot 5 is connected with control handle 4, specifically indicates: control handle 4 include rotation portion 4a and handle 4b, the tip of the protruding portion of pivot 4 be a hexagonal pillar 5b, hexagonal pillar 5b wear to establish on the intermediate position of rotation portion 4a, be connected hexagonal pillar 5b and rotation portion 4a fixedly through connecting screw 5c to make rotation control handle 4 can make pivot 4 follow control handle 4 and rotate.

As shown in fig. 1-5, the wire pulling base 3 is connected and fixed on the rotating shaft, and the wire pulling base 3 and the control handle 4 rotate synchronously, specifically: a rotating piece 7 is fixedly connected to the wire pulling seat 3, the rotating piece 7 is a disc, and the wire pulling seat 3 is fixedly connected to the arc-shaped surface of the rotating piece 7; the base on 1 correspond and be equipped with holding tank 8 and activity groove 9, during the installation, at first will rotate 7 and pull wire seat 3 and place in holding tank 8 and activity groove 9, then will pivot 4 pass base 1 and rotate 7 and be connected with pivot mount pad 6, pivot 4 wear to establish promptly and rotate 7 on, and rotate 7 and follow pivot 4 internal rotation at base 1.

The pull wire seat 3 is positioned in the movable groove 9, and the pull wire seat 3 swings in the movable groove 9 along with the rotation of the control handle 4; a longitudinal first stay wire guide hole 10 is formed in the base 1, the first stay wire guide hole 10 is communicated with the movable groove 9, the stay wire 2 penetrates through the first stay wire guide hole 10 to be connected with the stay wire seat 3, two ends of the stay wire 2 are respectively provided with a clamping head 11, a first stay wire clamping groove 12 is formed in the stay wire seat 3, and the clamping heads 11 are clamped in the first stay wire clamping grooves 12; in addition, an unlocking position 13 and a locking position 14 are arranged in the movable groove 9, the unlocking position 13 is positioned at one end of the movable groove 9 close to the first stay wire guide hole 10, and the locking position 14 is positioned at the other end of the movable groove 9 far away from the first stay wire guide hole 10; an arc clamping part 15 is arranged on the stay wire seat 3, and an arc clamping groove 16 which is clamped and matched with the clamping part 15 is correspondingly arranged at the positioning position 14 of the movable groove; therefore, when the control handle 4 is rotated to enable the stay wire base 3 to swing from the unlocking position 13 to the locking position 14, the stay wire 2 is stretched, the clamping part 15 is clamped and matched with the arc-shaped clamping groove 16, the stay wire base 3 is in a locking state, and at the moment, the control handle 4 cannot continue to rotate; the movable groove 9 is arranged to enable the control handle 4 to rotate within a rotation range of 0-90 degrees. When the pull wire seat 3 needs to be reset, the control handle 4 is reversely applied with force, so that the clamping portion 15 is separated from the arc-shaped clamping groove 16, and the pull wire seat 3 reversely resets and swings to the unlocking position 13 of the movable groove.

The utility model provides a waist leans on adjustment mechanism then, as shown in fig. 7-11, including the elasticity waist back plate 17, the line of acting as go-between 2, backplate 18 and the control assembly that acts as go-between that support human waist.

Elastic waist backup plate 17 can receive the atress and produce elastic deformation, its upper end is expansion end 17a, the lower extreme is stiff end 17b, stiff end 17b connect and fix on backplate 18, specifically indicate: the two ends of the elastic waist backing plate 17 are respectively bent backwards to form an upper bending part 19 and a lower bending part 20, the two sides of the upper bending part 19 and the lower bending part 20 respectively extend towards the middle position of the elastic waist backing plate 17 to form an upper connecting plate 19a and a lower connecting plate 20a, and the lower connecting plate 20a is fixedly connected on the back plate 18 through screws; in addition, the base 1 is fixedly connected with the back plate 18 through the mounting screws 1a, so that the control handle 4 can be operated by a human body more quickly and conveniently.

As shown in fig. 7-8, a longitudinal support plate 21 is disposed at the middle position of the bottom of the elastic waist back plate 17, the support plate 21 is located at the rear end of the elastic waist back plate 17, a guide block 22 is disposed at the upper end of the support plate 21, and a second wire drawing guide hole 23 is formed in the guide block 22; 2 one end of acting as go-between with act as go-between seat 3 and be connected the back, the other end of acting as go-between 2 then passes second and acts as go-between guiding hole 23 and elasticity waist backup plate 17's upper end joint cooperation, specifically mean: a second stay wire clamping groove 25 is arranged in the middle of the upper end of the elastic waist backing plate 17, and the clamping head 11 at the other end of the stay wire 2 is clamped with the second stay wire clamping groove 25; the second wire guide hole 23 plays a role in guiding the wire 2 and applies vertical and downward traction force to the elastic waist backing plate 17 when the wire is pulled downwards; and a pull wire sleeve 24 is arranged on the pull wire 2, and two ends of the pull wire sleeve 24 are respectively connected to the first pull wire guide hole 10 and the second pull wire guide hole 23.

The waist rest adjusting mechanism can freely realize the waist supporting function of the elastic waist rest plate 17 by rotating the control handle 4, as shown in fig. 8, when the waist supporting of the elastic waist rest plate 17 is not needed, the stay wire seat 3 is at the unlocking position 13, the stay wire 2 does not apply traction force to the elastic waist rest plate 17, and at the moment, the elastic waist rest plate 17 can provide a proper support for the waist of a human body; as shown in fig. 9, when the elastic waist back plate 17 needs to be pushed against the waist, the control handle 4 is rotated to swing the wire base 3 to the locking position 14, and at this time, the wire base 3 stretches the wire 2 so that the upper end of the waist back elastic plate 17 moves downwards under the traction action of the wire 2 to elastically deform the elastic waist back plate 17; as shown in fig. 10, the elastic waist back plate 17 can perform the waist supporting function for the human body.

Claims

1. A pull wire control assembly characterized by: comprises a base, a stay wire seat for connecting a stay wire and a control handle convenient for being held by hands; control handle rotate with the base through the pivot and be connected, control handle and pivot be mutually perpendicular, just stay wire seat and control handle rotate in step the base in be equipped with movable groove, movable groove have the position of unblock and lock the position, the surface of stay wire seat on be equipped with curved joint portion lock position department correspond be equipped with joint portion joint complex arc draw-in groove, when stay wire seat by unblock position rotate when locking the position, joint portion and the cooperation of arc draw-in groove joint.

2. The pull-cord control assembly of claim 1, wherein: the rotary shaft installation seat is arranged on one side of the base and fixedly connected with the base, and the rotary shaft penetrates through the base from the other side of the base and is rotatably connected with the rotary shaft installation seat.

3. The pull wire control assembly of claim 2, wherein: the pivot be a four corners pivot, a tip of pivot be a cylinder, cylinder and pivot mount pad rotate to be connected, the other end and the control handle of pivot fixed linking to each other.

4. The pull-cord control assembly of claim 1, wherein: the pull wire seat on be connected with a rotation piece, the base in be equipped with the holding tank, rotation piece be located the holding tank, the pivot wear to establish on base and rotation piece, just rotation piece and pivot synchronous rotation.

5. The pull-cord control assembly of claim 1, wherein: the base is provided with a first stay wire guide hole which is communicated with the movable groove.

6. The pull-cord control assembly of claim 1, wherein: the rotation range of the control handle is between 0 and 120 degrees.

7. A waist leans on adjustment mechanism which characterized in that: comprising an elastic waist back plate for supporting the waist of a human body, a pull string, a back plate and the pull string control assembly according to any one of claims 1 to 6; the elastic waist support plate is provided with a movable end and a fixed end, the fixed end is connected with the back plate, and the movable end deforms under the traction action of the stay wire; one end of the stay wire is in clamping fit with the movable end of the elastic waist rest plate, and the other end of the stay wire penetrates through the first stay wire guide hole to be connected with the stay wire seat.

8. The lumbar support adjustment mechanism of claim 7, wherein: the upper end of the elastic waist support is a movable end, and the lower end of the elastic waist support is a fixed end.

9. The lumbar support adjustment mechanism of claim 8, wherein: the middle position department of elasticity waist backup pad bottom is equipped with fore-and-aft backup pad, the backup pad be located the rear end of elasticity waist backup pad, the upper end of backup pad is equipped with the guide block, the guide block on be equipped with the second and act as go-between the direction hole, act as go-between and pass the second and act as go-between the direction hole and cooperate with elasticity waist backup pad upper end joint.

10. The lumbar support adjustment mechanism of claim 9, wherein: the pull wire is provided with a pull wire sleeve outside, the upper end of the pull wire sleeve is connected in the second pull wire guide hole, and the lower end of the pull wire sleeve is connected in the first pull wire guide hole.

11. The lumbar support adjustment mechanism of claim 7, wherein: the two ends of the elastic waist back plate are respectively bent backwards to form an upper bending part and a lower bending part, the two sides of the upper bending part and the two sides of the lower bending part respectively extend out of an upper connecting plate and a lower connecting plate towards the middle position of the elastic waist back plate, and the lower connecting plates are connected and fixed on the back plate.

12. The lumbar support adjustment mechanism of claim 7, wherein: the base is connected and fixed on the back plate.