CN210124470U - Back stretching chair - Google Patents
Back stretching chair Download PDFInfo
- Publication number
- CN210124470U CN210124470U CN201920906191.6U CN201920906191U CN210124470U CN 210124470 U CN210124470 U CN 210124470U CN 201920906191 U CN201920906191 U CN 201920906191U CN 210124470 U CN210124470 U CN 210124470U
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- China
- Prior art keywords
- chair
- arc
- chair back
- bracket
- seat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a spine stretching device, which comprises a chair seat, a chair back support connected with the chair seat and a chair back. The chair back support can stretch and retract and can tilt relative to the chair seat. The chair back is an arc-shaped plate body, and two ends of the chair back are arranged on the chair back bracket; the chair back has elastic energy arc bending and can change the bending radian of the chair back support by stretching and retracting. By the structure, a user can sit on the seat to stand upright or lie down to lean against the back of the chair to extend the back, and the back of the chair is connected with the seat without worrying about displacement or falling off. In addition, the user can easily operate the extension or the shortening of the chair back bracket to indirectly adjust the radian of the chair back, thereby saving labor and avoiding the injury of the clamping hands.
Description
Technical Field
The utility model relates to a sports equipment, in particular to a spine stretching device.
Background
Stretching of the lacing wire is important before and after the exercise, and the back of the person usually needs the assistance of a back stretcher to effectively stretch the back. The prior art spine stretching device comprises a substrate and a bending sheet. A plurality of clamping grooves are formed on the substrate; one end of the bending sheet is fixedly arranged on the substrate, and the other end of the bending sheet is inserted and fixed in one of the clamping grooves after being bent by the bending sheet. Therefore, the clamping groove into which the bending sheet is inserted can be selected according to the required bending degree, and the effect of adjusting the radian is achieved. In use, the prior art spine stretcher is placed on a chair and used upright against the back of the chair, or placed on the ground and used flat by the user.
However, the prior art dorsal spreader has the following disadvantages:
first, since it cannot be fixed and is easily displaced, it is not easily positioned at a position where the back of the human body needs to be extended when it is placed on a chair, and it is also easily dropped.
Secondly, when the radian is adjusted, a user firstly grasps the bending piece by hand, applies force to bend the bending piece and simultaneously moves the bending piece out of the originally inserted clamping groove, and finally applies force again to bend the bending piece and simultaneously inserts the bending piece into the other clamping groove. Such an operation mode requires a large force and cannot be operated by a user with a small force; in addition, the bending sheet is easily injured due to the guidance of hands when the bending sheet is carelessly clamped in the process of moving out or inserting into the clamping groove in a mode of directly grabbing the bending sheet by hands.
Thus, the spine stretcher of the prior art is certainly to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing disadvantages and deficiencies of the prior art, the present invention provides a back extension chair that can be used upright or flat without displacement and drop, and that can be easily and effortlessly adjusted in a radian manner without pinching the hands and being injured.
In order to achieve the above object, the present invention provides a back extension chair, comprising:
a seat;
a chair back support connected to the chair seat; the chair back support can stretch and retract and selectively topple relative to the chair seat;
the chair back is an arc-shaped plate body, and two ends of the chair back are arranged on the chair back bracket; the chair back is provided with an elastic energy arc bending part, and the chair back changes the bending radian along with the stretching of the chair back bracket.
Further, the back extension chair, wherein the back support comprises a first tube connected to the seat; the second pipe body can movably penetrate through the first pipe body; one end of the chair back is arranged on the first tube body, and the other end of the chair back is arranged on the second tube body.
Further, in the spine extension chair, a first positioning hole is formed through a tube wall of the first tube body of the chair back support; a plurality of second positioning holes are formed in the pipe wall of the second pipe body of the chair back support in a penetrating manner; the chair back support further comprises a fixing piece which selectively fixes the first tube body and the second tube body; when the fixing member fixes the first pipe body and the second pipe body, the fixing member penetrates through the first positioning hole of the first pipe body and one of the second positioning holes of the second pipe body.
Furthermore, the back extension chair further comprises a connecting bracket which is fixedly arranged on the chair seat and comprises a positioning piece; the chair back bracket is pivoted on the connecting bracket; the positioning piece of the connecting bracket selectively fixes the chair back bracket and the connecting bracket.
Furthermore, the back extension chair further comprises an arc-shaped long hole, wherein the arc-shaped long hole is provided with a plurality of wide parts and a plurality of narrow parts which are mutually connected in a staggered manner; when the chair back bracket rotates relative to the connecting bracket, the positioning piece of the connecting bracket moves along the arc-shaped long hole in the arc-shaped long hole; the positioning piece of the connecting bracket is a column body and can be movably arranged in the arc-shaped long hole of the chair back bracket in a penetrating way; the positioning piece comprises a thick part and a plurality of narrow parts, wherein the thick part is connected with the thick part, the width of the thick part is smaller than that of the wide parts of the arc-shaped long hole, and the width of the thick part is larger than that of the narrow parts of the arc-shaped long hole; the thick part is selectively arranged in one of the wide parts of the arc-shaped long holes in a penetrating way; a thin part, the width of which is less than the narrow parts of the arc-shaped long hole; the thin part can move between the wide parts and the narrow parts of the arc-shaped long hole.
Furthermore, the spine stretching chair further comprises two support arms which are arranged at intervals; the chair back bracket is pivoted on the two support arms; the positioning piece of the connecting bracket penetrates through the two supporting arms and is parallel to the pivot of the chair back bracket; the positioning piece can move relative to the two support arms along the axial direction of the pivot of the chair back support.
Furthermore, the spine stretching chair wherein the connecting bracket further comprises an elastic component connected to the positioning member and one of the supporting arms; the elastic component tends to make the positioning piece penetrate through the arc-shaped long hole of the chair back bracket by the thick part.
Further, the back extension chair further comprises a base for mounting and comprising an armrest; the chair seat can be rotatably arranged on the base.
Furthermore, the back extension chair comprises a back plate which is provided with an elastic energy arc bending part and two ends of which are arranged on the back support; the back plate is provided with a first surface and a second surface which are opposite; the soft cushion covers the first surface of the back plate and is bent along with the back plate in an arc shape; and the covering sleeve covers the soft cushion and extends to cover the second surface of the back plate.
The utility model has the advantages of, borrow by in the seat support with the back of the chair support that can stretch out and draw back and incline for the seat support selectively to locate the back of the chair support with the both ends of the back of the chair of arc plate body on the back of the chair support, borrow this user can sit upright use or lie and use the back of the chair to reach the efficiency of extension back of the body on the seat support, also needn't worry because of the back of the chair is connected in the seat support and can shift or drop simultaneously. In addition, because the back of the chair has elastic energy arc and buckles, and both ends are arranged on the back of the chair support, the back of the chair can change the radian of its buckling along with the back of the chair support is flexible by this. Therefore, a user can easily operate the extension or the shortening of the chair back bracket to indirectly adjust the radian of the chair back, and does not need to bend the bending sheet strongly to be inserted into the clamping groove for fixing, so that the accidental hand clamping injury can be avoided.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a schematic view of the rotation of the chair seat relative to the base according to the present invention.
Fig. 3 is an exploded view of the present invention.
Fig. 4 is a schematic side view of the chair back and the chair back support of the present invention tilted relative to the chair seat.
Fig. 5 is a partial enlarged view of the pivot joint between the chair back support and the connecting support of the present invention.
Fig. 6 and 7 are schematic sectional views of the positioning member according to the present invention.
Fig. 8 is an exploded view of the chair back support of the present invention.
Fig. 9 and 10 are schematic sectional views of the backrest support and the backrest of the present invention.
Fig. 11 is an exploded view of the chair back of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in conjunction with the drawings and the accompanying drawings to further illustrate the technical means adopted to achieve the objects of the present invention.
Referring to fig. 1 to 4, the back extension chair of the present invention includes a base 10, a seat 20, a connecting bracket 30, a backrest bracket 40 and a backrest 50.
The base 10 is used for mounting and includes a handrail 11. Generally, the ladder is erected on the ground or floor, but may be erected on a slope or a step.
The seat 20 is rotatably provided on the base 10, whereby a user can sit on the seat 20 and hold the armrest 11 of the base 10 to rotate the seat 20.
Referring further to fig. 4 to 7, the connecting bracket 30 is fixed to the seat 20 and includes a positioning element 31. Specifically, in the embodiment, the positioning element 31 is a cylinder and includes a thick portion 311 and a thin portion 312, but the specific structure of the positioning element 31 is not limited thereto.
The back bracket 40 is connected to the seat 20 and selectively tilts relative to the seat 20. Specifically, in the present embodiment, the backrest frame 40 is pivoted to the connecting frame 30, connected to the seat 20 by the connecting frame 30, and tilted relative to the seat 20 by being pivoted to the connecting frame 30; however, the present invention is not limited to this, and the back frame 40 may be directly pivoted to the seat 20 without the connecting frame 30. In addition, the positioning member 31 of the connection bracket 30 selectively fixes the angle between the back bracket 40 and the connection bracket 30.
Specifically, the backrest support 40 includes an arc-shaped slot 41 having a plurality of wide portions 411 and a plurality of narrow portions 412 connected to each other in a staggered manner; in other words, the width of the long holes is wide and narrow and staggered with each other. The positioning member 31 of the connecting bracket 30 is movably inserted into the arc-shaped long hole 41 of the seat back bracket 40; in other words, when the back bracket 40 rotates relative to the connecting bracket 30, the retainer 31 moves within the arc-shaped long hole 41 along the arc-shaped long hole 41. The width of the thick portion 311 of the positioning member 31 is smaller than the wide portions 411 of the arc-shaped long holes 41 and larger than the narrow portions 412, and the thick portion 311 is selectively inserted into one of the wide portions 411; the width of the thin portion 312 of the positioning member 31 is smaller than the narrow portions 412 of the arc-shaped long hole 41, and the thin portion 312 can move between the wide portions 411 and the narrow portions 412.
Therefore, when the positioning element 31 is inserted into the arc-shaped long hole 41 through the narrow portion 312, the narrow portion 312 can freely shuttle between the wide portion 411 and the narrow portion 412 through the narrow portions 412, so that the positioning element 31 can move along the arc-shaped long hole 41 in the arc-shaped long hole 41; when the positioning member 31 is inserted into the arc-shaped long hole 41 through the thick portion 311, the thick portion 311 can only be inserted into one of the wide portions 411 and cannot pass through the narrow portions 412, so that the positioning member 31 cannot move along the arc-shaped long hole 41, thereby fixing the backrest bracket 40 and the connecting bracket 30. In this way, the user can move the positioning member 31 in the form of a column and choose to make the thin portion 312 penetrate through the arc-shaped long hole 41 or make the thick portion 311 penetrate through the arc-shaped long hole 41, thereby adjusting the angle of the backrest support 40 relative to the seat 20 or fixing the backrest support 40.
In addition, the connecting bracket 30 in this embodiment further includes two support arms and an elastic element. The backrest support 40 is pivotally mounted to the two support arms. The positioning member 31 penetrates the two support arms and is parallel to the pivot of the back frame 40, and the positioning member 31 can move relative to the two support arms along the axial direction of the pivot of the back frame 40; in other words, the two support arms can stabilize the positioning member 31 from deflecting or tilting. The elastic component is connected to the positioning member 31 and one of the support arms, and the elastic component tends to make the positioning member 31 pass through the arc-shaped long hole 41 of the backrest bracket 40 by the thick portion 311. Therefore, a user can operate the positioning member 31 more simply without worrying about the locking caused by careless deflection or deflection in the process of moving the positioning member 31, and without manually resetting the positioning member 31 to fix the backrest bracket 40 after the angle of the backrest bracket 40 is adjusted. However, the support arm and the elastic member may not be provided.
However, the structure of the pivot adjusting and fixing relationship between the backrest frame 40 and the connecting frame 30 is not limited to this, for example, the backrest frame 40 may not have the arc-shaped long hole 41 but have a plurality of tooth-shaped positioning portions, so that the positioning member 31 is selectively clamped in one of the positioning portions to fix and adjust the backrest frame 40; alternatively, the seat back frame 40 may be pivotally connected to the connecting frame 30 in a tight manner without the retainer 31.
Referring further to fig. 8-10, the back support 40 can be extended and retracted. Specifically, the backrest support 40 in this embodiment includes a first tube 42, a second tube 43 and a fixing member 44. The first tube 42 is connected to the seat 20 and has a first positioning hole 421 formed on the wall thereof. The second tube 43 is movably disposed through the first tube 42 and has a plurality of second positioning holes 431 formed through the wall thereof. The fixing member 44 selectively fixes the first tube 42 and the second tube 43; when the fixing member 44 fixes the first tube 42 and the second tube 43, the fixing member 44 is disposed through the first positioning hole 421 of the first tube 42 and the second positioning hole 431 of the second tube 43 opposite to the first positioning hole 421. Whereby the user can operate the fixing member 44 to adjust the extension or contraction of the back frame 40 and fix it.
However, the telescopic adjustment and fixing structure of the backrest support 40 is not limited to this, and the first tube 42 and the second tube 43 may be fixed to each other in a manner of tightening a knob without the first positioning hole 421, the second positioning hole 431, and the fixing member 44; or the first tube 42 and the second tube 43 may not be provided, and the two slide rails may move relatively to each other to achieve the effect of extension and retraction.
As further shown in fig. 8 to 11, the backrest 50 is an arc-shaped plate and two ends of the backrest are disposed on the backrest support 40. The chair back 50 is provided with an elastic energy arc bending, and the bending radian of the chair back 50 is changed along with the extension and contraction of the chair back bracket 40; in other words, in the present invention, the degree of curvature of the backrest 50 is adjusted by the extension and contraction of the backrest bracket 40. Specifically, in the embodiment, one end of the backrest 50 is disposed on the first tube 42, and the other end is disposed on the second tube 43, so that the backrest 50 can change the curvature of the bend by the relative displacement between the first tube 42 and the second tube 43.
In addition, the backrest 50 in this embodiment includes a back plate 51, a cushion 52 and a cover 53. The back plate 51 is provided with an elastic energy arc bending and two ends are arranged on the chair back bracket 40; the back plate 51 has a first surface and a second surface opposite to each other. The cushion 52 covers the first surface of the back plate 51 and is bent in an arc shape along with the back plate 51. The wrap 53 covers the cushion 52 and extends over the second side of the back plate 51. Thereby, the user is cushioned by the cushion 52 without discomfort when leaning against the seat back 50; moreover, the covering of the cushion 52 and the covering of the back plate 51 by the covering 53 can prevent the cushion 52 from being damaged, and can firmly fix the cushion 52 on the back plate 51, so that the whole body is firm and durable in use.
By connecting the retractable backrest support 40 to the seat 20 and selectively tilting relative to the seat 20, and by disposing the two ends of the arc-shaped backrest 50 on the backrest support 40, the user can sit on the seat 20 to use the backrest 50 upright or lie down to achieve the effect of extending the back, and at the same time, the backrest 50 is connected to the seat 20 without worrying about displacement or falling off. In addition, because the backrest 50 has an arc-shaped bend with elastic energy, and two ends of the backrest are disposed on the backrest support 40, the backrest 50 can change the bending radian along with the extension and contraction of the backrest support 40. Therefore, the user can easily operate the extension or contraction of the backrest support 40 to indirectly adjust the radian of the backrest 50 without bending the bent piece strongly to insert into the slot for fixing, thereby avoiding the accidental hand clamping injury.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with the preferred embodiment, but not limited to the present invention, any skilled person in the art can make some modifications or equivalent changes to the technical content disclosed above without departing from the technical scope of the present invention, but all the technical matters of the present invention are within the scope of the technical solution of the present invention.
Claims (9)
1. A back extension chair, which is characterized by comprising
A seat;
a chair back support connected to the chair seat; the chair back support can stretch and retract and selectively topple relative to the chair seat;
the chair back is an arc-shaped plate body, and two ends of the chair back are arranged on the chair back bracket; the chair back is provided with an elastic energy arc bending part, and the chair back changes the bending radian along with the stretching of the chair back bracket.
2. The spinal extension chair of claim 1 wherein the back support comprises
A first tube connected to the seat;
the second pipe body can movably penetrate through the first pipe body;
one end of the chair back is arranged on the first tube body, and the other end of the chair back is arranged on the second tube body.
3. The back extension chair according to claim 2, wherein a first positioning hole is formed through a tube wall of the first tube of the back support;
a plurality of second positioning holes are formed in the pipe wall of the second pipe body of the chair back support in a penetrating manner;
the chair back support further comprises
A fixing member selectively fixing the first tube and the second tube; when the fixing member fixes the first pipe body and the second pipe body, the fixing member penetrates through the first positioning hole of the first pipe body and penetrates through one of the second positioning holes of the second pipe body.
4. The dorsal extension chair according to any one of claims 1 to 3,
the chair further comprises a connecting bracket which is fixedly arranged on the chair seat and comprises a positioning piece;
the chair back bracket is pivoted on the connecting bracket; the positioning piece of the connecting bracket selectively fixes the chair back bracket and the connecting bracket.
5. The spinal extension chair of claim 4 wherein the back support further comprises
An arc-shaped long hole, which is provided with a plurality of wide parts and a plurality of narrow parts which are mutually staggered and connected; when the chair back bracket rotates relative to the connecting bracket, the positioning piece of the connecting bracket moves along the arc-shaped long hole in the arc-shaped long hole;
the positioning piece of the connecting bracket is a column body and can be movably arranged in the arc-shaped long hole of the chair back bracket in a penetrating way; the locating elements comprising interconnected
A thick portion having a width smaller than the wide portions of the arc-shaped long hole and a width larger than the narrow portions of the arc-shaped long hole; the thick part is selectively arranged in one of the wide parts of the arc-shaped long holes in a penetrating way;
a thin part, the width of which is less than the narrow parts of the arc-shaped long hole; the thin part can move between the wide parts and the narrow parts of the arc-shaped long hole.
6. The spinal extension chair of claim 5 wherein the connecting bracket further comprises two support arms spaced apart from each other; the chair back bracket is pivoted on the two support arms;
the positioning piece of the connecting bracket penetrates through the two supporting arms and is parallel to the pivot of the chair back bracket; the positioning piece can move relative to the two support arms along the axial direction of the pivot of the chair back support.
7. The chair of claim 6, wherein the connecting bracket further comprises a resilient member connected to the positioning member and one of the support arms; the elastic component tends to make the positioning piece penetrate through the arc-shaped long hole of the chair back bracket by the thick part.
8. The dorsal extension chair according to any one of claims 1 to 3,
further comprises a base for mounting and comprising a handrail;
the chair seat can be rotatably arranged on the base.
9. The chair of any one of claims 1 to 3, wherein the back comprises
The back plate is provided with an elastic energy arc bending part, and two ends of the back plate are arranged on the chair back bracket; the back plate is provided with a first surface and a second surface which are opposite;
the soft cushion covers the first surface of the back plate and is bent along with the back plate in an arc shape;
and the covering sleeve covers the soft cushion and extends to cover the second surface of the back plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920906191.6U CN210124470U (en) | 2019-06-17 | 2019-06-17 | Back stretching chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920906191.6U CN210124470U (en) | 2019-06-17 | 2019-06-17 | Back stretching chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210124470U true CN210124470U (en) | 2020-03-06 |
Family
ID=69663975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920906191.6U Expired - Fee Related CN210124470U (en) | 2019-06-17 | 2019-06-17 | Back stretching chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210124470U (en) |
-
2019
- 2019-06-17 CN CN201920906191.6U patent/CN210124470U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200306 |