CN204318087U - A kind of back lifting gearing - Google Patents
A kind of back lifting gearing Download PDFInfo
- Publication number
- CN204318087U CN204318087U CN201420830949.XU CN201420830949U CN204318087U CN 204318087 U CN204318087 U CN 204318087U CN 201420830949 U CN201420830949 U CN 201420830949U CN 204318087 U CN204318087 U CN 204318087U
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- China
- Prior art keywords
- groove
- elevating bracket
- stopper slot
- control spring
- back lifting
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model discloses a kind of back lifting gearing, solve the unconspicuous problem of back lifting gear, it comprises elevating bracket, backboard, and elevating bracket is provided with control spring, the top of control spring is provided with pressing plate, pressing plate is fixed on elevating bracket, and pressing plate is stretched out in control spring lower end, and backboard is provided with tooth bar, multiple stopper slot and a reseting groove is had in tooth bar, be equipped with trimmer above backboard, control spring lower end is contained in stopper slot, is provided with cover plate above trimmer.Beneficial effect is: the obvious client of shift feeling can select according to the needs of oneself gear being applicable to oneself.
Description
Technical field
The utility model relates to a kind of backrest, particularly relates to a kind of back lifting gearing.
Background technology
The backrest existed on the market does not all have elevating function mostly, even if there is elevating function, not restriction between each gear of rising, shift feeling is not obvious, and client can not according to the gear needing selection suitable of oneself.
Utility model content
The purpose of this utility model is to provide a kind of back lifting gearing, and when solving that the chair back can not be elevated or rise in prior art, shift feeling is not obvious, and client can not select oneself the problem of gear applicable.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: a kind of back lifting gearing, comprise backboard, elevating bracket, elevating bracket is fixedly connected with backrest, described back lifting gearing also comprises tooth bar, the middle part of described elevating bracket offers spring groove, the top of described spring groove is L-type, the below of described spring groove is fan-shaped, described spring groove is built with control spring, the upper end of described control spring is stuck in L-type groove, the top of described control spring is provided with pressing plate, described pressing plate is fixed on elevating bracket, the end of described control spring stretches out from the lower end of pressing plate, described backboard is provided with dovetail groove, described tooth bar is stuck in dovetail groove, described tooth bar vertically offers multiple stopper slot, described stopper slot indentation, the side of described stopper slot offers vertical curve strip reseting groove, the upper end of described reseting groove is connected with the upper end of stopper slot, the lower end of described reseting groove is connected with the lower end of stopper slot, described tooth bar is positioned at the top of pressing plate, the lower end of described control spring is contained in stopper slot.
As the improvement of technique scheme, described backboard is provided with trimmer, and described trimmer side is strip, opposite side is ear, ear is provided with installing hole, and the installing hole of described trimmer is arranged on elevating bracket, and the strip of described trimmer is placed in the both sides of tooth bar.
As the improvement of technique scheme, be provided with cover plate above described trimmer, described cover plate is fixed on elevating bracket.
As the improvement of technique scheme, the number of described stopper slot is 5.
As the improvement of technique scheme, have step trough in the middle part of described elevating bracket, described step trough is positioned at the top of spring groove.
The utility model compared with prior art tool has the following advantages: the part of this back lifting gearing is few, and performance is more stable; Have a restriction between each gear when backrest rises, shift feeling is obvious, and client can select according to the needs of oneself gear being applicable to oneself.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model.
Fig. 2 is decomposing schematic representation of the present utility model.
Fig. 3 is elevating bracket assembling components figure of the present utility model.
Fig. 4 is backboard rack structure schematic diagram of the present utility model.
In figure, 1-backboard, 2-elevating bracket, 3-trimmer, 4-cover plate, 5-tooth bar, 6-control spring, 7-pressing plate, 8-dovetail groove, 9-spring groove, 10-stopper slot, 11-reseting groove.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Fig. 1, Fig. 2, back lifting gearing shown in Fig. 3 and Fig. 4, comprise backboard 1, elevating bracket 2, elevating bracket 2 is fixedly connected with backrest, described back lifting gearing also comprises tooth bar 5, the middle part of described elevating bracket 2 offers spring groove 9, the upper end of described spring groove 9 is L-type, the lower end of described spring groove 9 is fan-shaped, described spring groove 9 is built with control spring 6, the upper end of described control spring 6 is stuck in L-type groove, the lower end of described control spring 6 is positioned at fan groove, can swing in fan groove time stressed, because spring force recenters when not stressing, the top of described control spring 6 is provided with pressing plate, described pressing plate 7 is fixed on elevating bracket 2, the end of described control spring 6 stretches out from the lower end of pressing plate 7, can prevent control spring 6 from deviating from from L-type groove thus, described backboard 1 is provided with dovetail groove, described tooth bar 5 is stuck in dovetail groove, described tooth bar 5 vertically offers multiple stopper slot 10, described stopper slot 10 indentation, the side of described stopper slot 10 offers vertical curve strip reseting groove 11, the upper end of described reseting groove 11 is connected with the upper end of stopper slot 10, the lower end of described reseting groove 11 is connected with the lower end of stopper slot 10, described tooth bar 5 is positioned at the top of pressing plate 7, the lower end of described control spring 6 is contained in stopper slot 10, there is multiple sawtooth can limit the position of control spring 6 in stopper slot 10, shift feeling can be made thus obvious, client is allowed to select the gear be applicable to according to the needs of oneself.
Described backboard 1 is provided with trimmer 3, one deck of described trimmer 3 is strip, opposite side is ear, ear is provided with installing hole, the installing hole of described trimmer 3 is arranged on elevating bracket 2, the strip of described trimmer 3 is placed in the both sides of tooth bar 5, and described trimmer 3 can adjust the angle because firmly producing between the uneven backboard that causes and elevating bracket when upwards pulling backrest, reduces the frictional force between backboard and elevating bracket.
Be provided with cover plate 4 above described trimmer 3, described cover plate 4 is fixed on elevating bracket 2, and described cover plate 4 can limit the maximum angle between backboard bottom surface and lifting seated connection, and frictional force when making upwards to pull backrest between backboard and elevating bracket diminishes.
The number of described stopper slot 10 is 5, and the height of 5 adjustable gear number adjustment can adapt to the demand of each user.
The middle part of described elevating bracket 2 has step trough, and described step trough is positioned at the top of spring groove 9, offers step trough and can reduce materials cost.
In actual use, when needing the height regulating backrest, upwards pull backrest, backrest is fixedly connected with elevating bracket 2 mechanism, elevating bracket 2 is moved upward, control spring 6 is stuck on elevating bracket 2, elevating bracket 2 moves upward and control spring 6 is moved upward, the lower end of control spring 6 and the contact of incline plane of tooth bar 5, overcome spring force, move to upper left side, move to the position of limiting groove, can not continue to move up, if power is not upwards removed, restraining spring recenters by the barb position of stopper slot 10, when power is upwards removed, under the effect of spring force, spring recenters, enter gear.When backboard 1 moves to top, continue upwards, the top of spring can enter reseting groove 11, makes spring get back to initial position by reseting groove 11.
It should be noted last that, above embodiment is only unrestricted for illustration of the technical solution of the utility model, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in right of the present utility model.
Claims (5)
1. a back lifting gearing, comprise backboard, elevating bracket, elevating bracket is fixedly connected with backrest, it is characterized in that: described back lifting gearing also comprises tooth bar (5), the middle part of described elevating bracket (2) offers spring groove (9), the top of described spring groove (9) is L-type groove, the below of described spring groove (9) is fan-shaped, described spring groove (9) is built with control spring (6), the upper end of described control spring (6) is stuck in L-type groove, the top of described control spring (6) is provided with pressing plate (7), described pressing plate (7) is fixed on elevating bracket (2), the end of described control spring (6) stretches out from the lower end of pressing plate (7), described backboard (1) is provided with dovetail groove (8), described tooth bar (5) is stuck in dovetail groove (8), described tooth bar (5) vertically offers multiple stopper slot (10), described stopper slot (10) indentation, the side of described stopper slot (10) offers vertical curve strip reseting groove (11), the upper end of described reseting groove (11) is connected with the upper end of stopper slot (10), the lower end of described reseting groove (11) is connected with the lower end of stopper slot (10), described tooth bar (5) is positioned at the top of pressing plate (7), the lower end of described control spring (6) is contained in stopper slot (10).
2. back lifting gearing according to claim 1, it is characterized in that: described backboard (1) is equipped with trimmer (3), described trimmer (3) side is strip, opposite side is ear, ear is provided with installing hole, the installing hole of described trimmer (3) is arranged on elevating bracket (2), and the strip of described trimmer (3) is placed in the both sides of tooth bar (5).
3. back lifting gearing according to claim 1, is characterized in that: the number of described stopper slot (10) is 5.
4. back lifting gearing according to claim 2, is characterized in that: described trimmer (3) top is provided with cover plate (4), and described cover plate (4) is fixed on elevating bracket (2).
5. back lifting gearing according to claim 1, is characterized in that: the middle part of described elevating bracket (2) has step trough, and described step trough is positioned at the top of spring groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830949.XU CN204318087U (en) | 2014-12-22 | 2014-12-22 | A kind of back lifting gearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420830949.XU CN204318087U (en) | 2014-12-22 | 2014-12-22 | A kind of back lifting gearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204318087U true CN204318087U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420830949.XU Active CN204318087U (en) | 2014-12-22 | 2014-12-22 | A kind of back lifting gearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204318087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282149A (en) * | 2018-02-24 | 2018-07-13 | 清远初曲智能科技有限公司 | A kind of quick, intelligent Surfaces Cleaning for photovoltaic solar cell panels |
| DE102020133699B4 (en) | 2019-12-31 | 2022-09-08 | Yi-Ru Chen | QUICKLY INSTALLABLE HEADREST ADJUSTMENT DEVICE |
-
2014
- 2014-12-22 CN CN201420830949.XU patent/CN204318087U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282149A (en) * | 2018-02-24 | 2018-07-13 | 清远初曲智能科技有限公司 | A kind of quick, intelligent Surfaces Cleaning for photovoltaic solar cell panels |
| DE102020133699B4 (en) | 2019-12-31 | 2022-09-08 | Yi-Ru Chen | QUICKLY INSTALLABLE HEADREST ADJUSTMENT DEVICE |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |