CN217792145U - Portable adjustable backrest - Google Patents

Abstract

The utility model relates to the technical field of daily necessities, in particular to a portable adjustable backrest; the waist-back type corner brace comprises a support, a detachable telescopic corner brace capable of sliding up and down along the support, an upper back movably connected with the upper end of the support through a movable connecting piece, and a waist back connected with the lower part of the upper back, wherein the waist back is connected with the support or the detachable telescopic corner brace through a telescopic connecting piece; the support, the upper back and the waist back are of frame type structures. The utility model discloses on can being applicable to any chair, for different crowds provide waist and back support, have convenient regulation, low price, simple structure, quality light, conveniently carry etc. advantage, solved among the prior art and abandoned the not enough that unsupported chair caused the waste in order to provide waist and back support, also solved simultaneously that support nature chair is expensive, the structure is complicated, the quality is heavier, inconvenient carry etc. not enough.

Description

Portable adjustable backrest

Technical Field

The utility model relates to the technical field of daily necessities, in particular to adjustable back that conveniently carries.

5 background of the invention

With the development of society, people who work at desk are more and more, because of the incorrectness of sitting posture, people who have diseases in the back and waist are more and more, and in order to provide necessary support for the waist and the back, people often use auxiliary articles such as back pads, waist pillows and the like. However, the articles such as back cushion and waist pillow are not only expensive, but also not adjustable in height and thickness, and difficult to satisfy the use requirements in different postures, and they are not portable 10 belts as well as poor in support performance. In order to support the waist and the back, various chairs for supporting the waist and the back are emerging continuously, but all the chairs have the defects of high price, complex structure, heavy weight, inconvenience for carrying and the like. Moreover, it is wasteful to replace chairs with new ones to provide support to the lumbar and back, and to discard chairs without lumbar and back support.

The utility model discloses the technical problem who solves does: the existing chair with the waist and back support is expensive 15, complex in structure, heavy in weight and inconvenient to carry, and the chair is replaced by a new chair in order to meet the requirements of waist and back support, and the old chair without support is discarded, so that great waste is caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an adjustable backrest convenient to carry, which can be applied to any chairs and can provide a waist and a back support 20 for different people, and has the advantages of convenient adjustment, low price, simple structure, light weight, convenient carrying and the like.

The utility model discloses the technical scheme who adopts does: a portable adjustable backrest comprises a support, a detachable telescopic corner brace capable of sliding up and down along the support, an upper backrest movably connected with the upper end of the support through a movable connecting piece, and a waist backrest connected with the lower part of the upper backrest, wherein the waist backrest is connected with the support or the detachable telescopic corner brace through a telescopic connecting piece so as to adjust the front and back positions of the waist backrest; the upper back 25 can rotate along the movable connecting piece; the support, the upper back and the waist back are of frame type structures.

The support is of a hollow structure, the detachable telescopic corner connectors are connected inside the support in an inscribed mode, the telescopic connecting pieces are fixedly connected with the support, and the telescopic connecting pieces stretch up and down to adjust the front position and the rear position of the waist and the back.

The support is of a flanging structure, the detachable telescopic corner connectors are located on the inner side of the flanging structure of the support, the detachable telescopic corner connectors are fixedly connected with the telescopic connecting pieces, and the telescopic connecting pieces stretch up and down to adjust the front position and the rear position of the waist and the back.

The telescopic connecting piece consists of a telescopic piece, a connecting block and a connecting shaft for connecting the connecting block and the telescopic piece.

The upper back is connected with the waist back through a connecting sheet.

The upper end of the support is detachably provided with a headrest.

The support, the detachable telescopic corner connectors, the upper back and the waist back are all made of light materials.

The upper back and the waist back are provided with detachable supporting sleeves.

The inner side of the upper part of the bracket is provided with a reinforcing block, and the outer side of the upper part of the bracket is provided with an elastic anti-slip block.

The beneficial effects of the utility model reside in that: the utility model is a backrest, not a chair, which can be arranged on any chair to support the waist and the back, thereby solving the problem that the chair without support is discarded to provide support for the waist and the back in the prior art, which causes waste; secondly, the utility model can be adjusted back and forth and stretched up and down, the backrest can be adjusted according to different requirements, the universality is strong, and the utility model is suitable for different people; third, the utility model discloses a frame-type light material structure has advantages such as low price, simple structure, quality are light, conveniently carry.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a rear view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is a schematic view of a telescopic link structure;

FIG. 5 is a schematic view of an exploded structure of the telescoping connection;

FIG. 6 is a schematic diagram of a gear plate structure;

FIG. 7 is a schematic view of the structure of the present invention with a headrest;

FIG. 8 is a partially enlarged view of the frame body;

FIG. 9 is a schematic view showing the structure of the inner side of the mounting plate inembodiment 1;

FIG. 10 is a schematic view of a frame structure;

FIG. 11 is a schematic view of a detachable retractable corner brace;

FIG. 12 is a schematic view showing the structure of the fitting surface between the upper and lower adjusting blocks and the mounting groove of the adjusting block

FIG. 13 is a schematic view of the back structure of the up-down adjusting block;

the reference numerals and names in the drawings correspond to the following: the detachabletelescopic corner brace 1, the waist andback 2, theupper back 3, the movable connectingpiece 4, thebracket 5, the telescopic connectingpiece 6, the connectingpiece 7 and theheadrest 8.

The adjustingblock mounting groove 11, thechute 12 and the upper andlower adjusting blocks 13;

theframe body 51, the reinforcingblock 52, the elasticanti-skid block 53, themounting plate 54 and the wear-resistant sheet 55;

thetelescopic piece 61, the connectingblock 62 and the connectingshaft 63;

a mountinghole 111;

adjustingteeth 131, resetslide rails 132 and limitcolumns 133;

alimiting groove 511, a limitingblock 512, asecond spring 513 and asliding edge 514;

mountingposts 551,holes 541;

atelescopic body 611, agear plate 612 and ashell 613;

reinforcingrib 6111, adjustingpiece 6112,mounting groove 6113,spring 6114, mountinglug 6115 and adjustingcolumn 6116;

afixing hole 6121,gear teeth 6122 and aslide rail 6123;

alimit hole 6131.

Detailed Description

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 work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-13, the present invention provides a technical solution: a portable adjustable backrest comprises asupport 5, a detachabletelescopic corner brace 1 capable of sliding up and down along thesupport 5, anupper backrest 3 movably connected with the upper end of thesupport 5 through a movable connectingpiece 4, and awaist backrest 2 connected with the lower part of theupper backrest 3, wherein thewaist backrest 2 is connected with thesupport 5 or the detachabletelescopic corner brace 1 through a telescopic connectingpiece 6 so as to adjust the front and back positions of thewaist backrest 2; theupper back 3 can rotate along the movable connectingpiece 4 so as to conveniently adjust the front and back positions of theupper back 3; thesupport 5, theupper back 3 and thewaist back 2 are in frame type structures.

Thesupport 5 is of a hollow structure, the detachabletelescopic corner connectors 1 are connected with the inside of thesupport 5 in an inscribed mode, thetelescopic connecting pieces 6 are fixedly connected with thesupport 5, and the telescopic connectingpieces 6 stretch up and down to adjust the front position and the rear position of the waist and theback 2.

The telescopic connectingpiece 6 is composed of atelescopic piece 61, a connectingblock 62 and a connectingshaft 63 for connecting the connectingblock 62 and thetelescopic piece 61.

Theextensible member 61 comprises anextensible member body 611, agear plate 612 and ashell 613, one end of theextensible member body 611 is a connecting end connected with the connectingblock 62, the other end of the extensible member body is an adjusting end, the adjusting end is provided with amounting groove 6113, an adjusting assembly is arranged in themounting groove 6113, amulti-gear tooth 6122 is arranged in the middle of thegear plate 612, aslide rail 6123 is arranged on the outer side of thegear tooth 6122, thegear plate 612 is reversely buckled on theextensible member body 611, and thegear tooth 6122 of thegear plate 612 is in sliding connection with the adjusting assembly through an adjustingcolumn 6116; the adjusting component comprises an adjustingpiece 6112, an adjustingpost 6116 is arranged on the upper surface of the front end of the adjusting piece, mountinglugs 6115 are arranged on two side faces of the front end of the adjusting piece, and aspring 6114 sleeved on themounting lugs 6115; afixing hole 6121 is formed in thegear plate 612, alimiting hole 6131 corresponding to thefixing hole 6121 is formed in thehousing 613, and screws are arranged in thefixing hole 6121 and thelimiting hole 6131 to fixedly connect thegear plate 612 and thehousing 613; a reinforcingrib 6111 is arranged in the middle of theexpansion part body 611; the adjustingmember 6112 is connected to thebody 611 of the extensible member by a screw.

Thebracket 5 comprises abracket body 51 and aninstallation plate 54 fixedly connected with thebracket body 51; alimiting groove 511 is formed in the inner surface of theframe body 51, alimiting block 512 is arranged in thelimiting groove 511, and asecond spring 513 is arranged on one side of thelimiting block 512;

an adjustingblock mounting groove 11 is formed in thetelescopic corner brace 1, an upper adjustingblock 13 and alower adjusting block 13 are fixedly arranged on the adjustingblock mounting groove 11, and adjustingteeth 131 and areset slideway 132 which are matched with a limitingblock 512 are arranged on the upper adjustingblock 13 and thelower adjusting block 13;

theframe body 51 is provided with asliding edge 514, and thetelescopic corner connector 1 is provided with asliding groove 12 matched with thesliding edge 514.

For simple to operate is swift, set upmounting hole 111 on regulatingblock mounting groove 11, be provided withspacing post 133 on the upper and lower regulatingblock 13, spacingpost 133 and mountinghole 111 plug-in connection.

In order to prevent thetelescopic corner brace 1 from being repeatedly adjusted up and down to cause abrasion to themounting plate 54, a wear-resistant sheet 55 is arranged on the inner side of themounting plate 54, and in order to facilitate and speed the mounting, the wear-resistant sheet 55 is connected with ahole 541 formed in themounting plate 54 in an inserting manner through amounting column 551.

For the convenience of adjustment, theupper back 3 is connected with the waist back 2 through a connectingpiece 7.

In order to provide support for the head, the performance of improvement is that theheadrest 8 is detachably arranged at the upper end of thebracket 5.

In order to reduce the weight to the maximum extent and facilitate carrying and carrying, thebracket 5, the detachabletelescopic corner brace 1, theupper back 3 and thewaist back 2 are all made of light materials such as aluminum materials.

In order to improve the comfort, enhance the supporting performance and enlarge the range of the user group, theupper back 3 and thewaist back 2 are provided with detachable supporting sleeves.

In order to improve the strength of the bracket, a reinforcingblock 52 is arranged on the inner side of the upper part of thebracket 5, so that the taking is convenient, the comfort is improved, the bracket does not slip, and an elasticanti-slip block 53 is arranged on the outer side of the bracket.

In the use, can be according to the in-service use needs, telescopic anglesign indicating number 1 can be dismantled in the lapse of pulling down is adjusted the height of back, when telescopic anglesign indicating number 1 of lapse of pulling down, adjusttooth 131downstream extrusion stopper 512,stopper 512 extrudeessecond spring 513, makestopper 512 get into next gear throughslide 132 that resets, when the gear is transferred to highest gear (back overall height is the highest),stopper 512 can follow the slide that resets and get into lowest gear (back overall height is the shortest), it is spacing to adjusttooth 131 tostopper 512, makestopper 512 fix at suitable height, thereby fix telescopic anglesign indicating number 1 andsupport 4 at suitable height. Similarly, the waist back 2 can be pulled back and forth to drive the telescopic connectingpiece 6 to stretch and retract so as to adjust theupper back 5 and the waist back 2 back and forth. When the gear is adjusted, the waist back 2 can be pulled towards the waist direction, the spring is compressed, so that the gear shifting is realized by the left-right swinging of the adjusting column, theshell 613 of the telescopic connectingpiece 6 and thegear plate 612 are driven to extend towards the waist direction, when the gear is adjusted to the highest gear, the gear is adjusted again, theadjusting column 6116 enters theslide rail 6123 and can enter the low gear again. The gears can be set according to actual requirements, and are generally 3-7 stages, and 5 stages are preferred. In addition, can also install or dismantle telescopic anglesign indicating number 1 additional according to actual need, for example waist and when people that do not well need support sit high-speed railway for a long time, just can dismantle telescopic anglesign indicating number 1 and tear down,place support 5 andupper back 3, back of thebody 2 and place the support that just can be convenient that provides on the seat, it is very convenient to carry and use.

Example 2

A portable adjustable backrest comprises asupport 5, a detachabletelescopic corner brace 1 capable of sliding up and down along thesupport 5, anupper backrest 3 movably connected with the upper end of thesupport 5 through a movable connectingpiece 4, and awaist backrest 2 connected with the lower part of theupper backrest 3, wherein thewaist backrest 2 is connected with thesupport 5 or the detachabletelescopic corner brace 1 through a telescopic connectingpiece 6 so as to adjust the front and back positions of thewaist backrest 2; theupper back 3 can rotate along the movable connectingpiece 4 so as to conveniently adjust the front and back positions of theupper back 3; thesupport 5, theupper back 3 and the waist back 2 are in frame type structures.

Support 5 is flange structure, can dismantle telescopic anglesign indicating number 1 and be located 5 flange structure of support is inboard, and can dismantle telescopic anglesign indicating number 1 with 5 tight fit of support is connected, if through smooth arris and spout tight fit connection, can dismantle telescopic anglesign indicating number 1 andtelescopic connection piece 6 fixed connection, therebytelescopic connection piece 6 is flexible from top to bottom adjusts the front and back position of back of thebody 2.

The telescopic connectingpiece 6 is composed of atelescopic piece 61, a connectingblock 62 and a connectingshaft 63 for connecting the connectingblock 62 and thetelescopic piece 61.

The extensible part 61 comprises an extensible part body 611, a gear plate 612 and a shell 613, one end of the extensible part body 611 is a connecting end connected with the connecting block 62, the other end of the extensible part body 611 is an adjusting end, the adjusting end is provided with an installation groove 6113, an adjusting assembly is arranged in the installation groove 6113, a multi-gear tooth 6122 is arranged in the middle of the gear plate 612, a slide rail 6123 is arranged on the outer side of the gear tooth 6122, the gear plate 612 is reversely buckled on the extensible part body 611, the gear tooth 6122 of the gear plate 612 is connected with the adjusting assembly in a sliding mode through an adjusting column 6116, and the gear plate 612 is fixedly connected with the shell 613 through a connecting piece; the adjusting component comprises an adjusting piece 6112, an adjusting post 6116 is arranged on the upper surface of the front end of the adjusting piece, mounting lugs 6115 are arranged on two side faces of the front end of the adjusting piece, and a spring 6114 sleeved on the mounting lugs 6115; a fixing hole 6121 is formed in the gear plate 612, a limiting hole 6131 corresponding to the fixing hole 6121 is formed in the housing 613, and screws are arranged in the fixing hole 6121 and the limiting hole 6131 to fixedly connect the gear plate 612 and the housing 613; the adjusting member 6112 is connected to the main body 611 of the expansion member through a screw.

For convenient adjustment, theupper back 3 is connected with the waist back 2 through a connectingsheet 7.

In order to provide support for the head, the performance of the improvement is that theheadrest 8 is detachably arranged at the upper end of thebracket 5.

In order to reduce the weight to the maximum extent and facilitate carrying and carrying, thebracket 5, the detachabletelescopic corner brace 1, theupper back 3 and the waist back 2 are all made of light materials such as aluminum materials.

In order to improve the comfort, enhance the supporting performance and enlarge the range of users, theupper back 3 and the waist back 2 are provided with detachable supporting sleeves.

In order to improve the strength of the support, the inner side of the upper part of thesupport 5 is provided with a reinforcing block 5-2, so that the taking is convenient, the comfort is improved, the support does not slip, and the outer side of the support is provided with an elastic anti-slip block 5-3.

Example 3

This embodiment is different fromembodiment 1 only in that aheadrest 8 is detachably provided to the upper end of thebracket 5.

Example 4

The present embodiment is different fromembodiment 2 only in that aheadrest 8 is detachably provided at the upper end of thebracket 5, and the headrest is a rotary headrest and can be rotated according to actual needs.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The portable adjustable backrest is characterized by comprising a support (5), a detachable telescopic corner brace (1) capable of sliding up and down along the support (5), an upper backrest (3) movably connected with the upper end of the support (5) through a movable connecting piece (4), and a waist backrest (2) connected with the lower part of the upper backrest (3), wherein the waist backrest (2) is connected with the support (5) or the detachable telescopic corner brace (1) through a telescopic connecting piece (6) so as to adjust the front and back positions of the waist backrest (2); the upper back (3) can rotate along the movable connecting piece (4); the support (5), the upper back (3) and the waist and back (2) are of frame type structures.

2. The portable adjustable backrest according to claim 1, wherein the support (5) is a hollow structure, the detachable telescopic corner brace (1) is internally connected inside the support (5), the telescopic connecting piece (6) is fixedly connected with the support (5), and the telescopic connecting piece (6) is vertically telescopic to adjust the front and back positions of the waist (2).

3. The portable adjustable backrest according to claim 1, wherein the support (5) is of a flange structure, the detachable telescopic corner brace (1) is located inside the flange structure of the support (5), the detachable telescopic corner brace (1) is fixedly connected with a telescopic connecting piece (6), and the telescopic connecting piece (6) is vertically stretched to adjust the front and back positions of the waist (2).

4. The portable adjustable backrest according to claim 1, 2 or 3, characterized in that the telescopic connecting member (6) is composed of a telescopic member (61), a connecting block (62), and a connecting shaft (63) connecting the connecting block (62) and the telescopic member (61).

5. The portable adjustable backrest according to claim 4, characterized in that the upper backrest (3) and the lumbar backrest (2) are connected by a connecting piece (7).

6. The portable adjustable backrest according to claim 5, characterized in that the headrest (8) is detachably arranged at the upper end of the bracket (5).

7. The portable adjustable backrest according to claim 6, characterized in that the support (5), the detachable telescopic corner brace (1), the upper back (3) and the waist back (2) are made of light materials.

8. The portable adjustable backrest according to claim 7, characterized in that the upper back (3) and the lumbar back (2) are provided with detachable support sleeves.

9. The portable adjustable backrest according to claim 8, characterized in that the upper part of the bracket (5) is provided with a reinforcing block (52) on the inner side and a resilient anti-slip block (53) on the outer side.

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