CN209807711U - Height-adjustable arm-chair - Google Patents
Height-adjustable arm-chair Download PDFInfo
- Publication number
- CN209807711U CN209807711U CN201821943950.8U CN201821943950U CN209807711U CN 209807711 U CN209807711 U CN 209807711U CN 201821943950 U CN201821943950 U CN 201821943950U CN 209807711 U CN209807711 U CN 209807711U
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- CN
- China
- Prior art keywords
- gear ring
- limiting
- pressing shaft
- sleeve
- seat
- Prior art date
- 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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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model provides a but height-adjusting's arm-chair, include the seat and set up in the seat below and articulate in the lead screw of seat, the lead screw is opposite to both sides screw thread direction by the middle part, screw rod both ends difference screw-thread fit has first bracing piece and the second bracing piece of downward setting, first bracing piece and second bracing piece middle part intercrossing and middle part are through hinged joint, the seat lateral part is provided with the connecting rod, the connecting rod upper end is connected with the desktop, the utility model discloses utilize the screw lead screw of bispin direction to come the convenient lift of controlling the angle of opening of chair foot and then realizing the chair.
Description
Technical Field
The utility model relates to a height-adjustable arm-chair.
Background
The height of the existing armchair is not easy to adjust or can only be adjusted through a multi-stage spring pin or a connecting rod, the height adjusting mode is troublesome, the height can not be conveniently controlled and adjusted, and the use is inconvenient.
Disclosure of Invention
The utility model discloses improve above-mentioned problem, promptly the to-be-solved technical problem of the utility model is that current altitude mixture control mode is inconvenient.
The utility model discloses a concrete implementation scheme is: the utility model provides a but height-adjusting's arm-chair, includes the seat and sets up in the seat below and articulate in the lead screw of seat, the lead screw is opposite to both sides screw thread direction by the middle part, the lead screw both ends are respectively screw-thread fit has first bracing piece and the second bracing piece that sets up downwards, first bracing piece and second bracing piece middle part intercrossing and middle part are through hinged joint, the seat lateral part is provided with the connecting rod, the connecting rod upper end is connected with the desktop.
Furthermore, a pair of lead screws is arranged below the seat, a first supporting rod and a second supporting rod are arranged below each lead screw, transmission gears are fixedly connected to the middle portions of the two lead screws, and the adjacent transmission gears are connected through chains to achieve synchronous rotation.
Furthermore, bearing seats are arranged on two sides of the bottom of the seat, two ends of the lead screw are hinged to the seat through bearings in the bearing seats, and one end of the lead screw extends out of the outer side of the bearing seats and is coaxially and fixedly connected with a rotating handle.
Furthermore, the upper end of the connecting rod is connected with the desktop through an angle adjusting device, the angle adjusting device comprises a limiting sleeve fixedly connected with the desktop, the limiting sleeve is provided with a limiting gear ring in the limiting sleeve, a rotating sleeve is sleeved outside the limiting sleeve, the upper end of the connecting rod is sleeved outside the rotating sleeve, the inner side of the rotating sleeve is provided with an inner gear ring, a pressing shaft is sleeved in the rotating sleeve, the outer surface of the pressing shaft is provided with an outer gear ring which can be meshed with the inner gear ring and the limiting gear ring simultaneously, the pressing shaft is arranged between the outer gear ring and the limiting gear ring and is provided with a compression spring, one end of the compression spring acts on the inner gear ring and the other end of the limiting sleeve, the surface of the pressing shaft is also fixed with a retaining ring to prevent the pressing shaft from being separated from the outer side of the rotating sleeve, the compression spring enables the retaining ring to, the axial length of the limit gear ring is greater than or equal to the length of the pressing shaft outer gear ring, and the limit sleeve is in snap fit with the rotating sleeve to enable the rotating sleeve to be rotatably connected with the limit sleeve.
Furthermore, the lower end of the connecting rod is connected with the seat through an angle adjusting device, the angle adjusting device comprises a limiting sleeve fixedly connected with the seat, the limiting sleeve is provided with a limiting gear ring in the limiting sleeve, a rotating sleeve is sleeved outside the limiting sleeve, the lower end of the connecting rod is sleeved outside the rotating sleeve, the inner side of the rotating sleeve is provided with an inner gear ring, a pressing shaft is sleeved in the rotating sleeve, the outer surface of the pressing shaft is provided with an outer gear ring which can be meshed with the inner gear ring and the limiting gear ring simultaneously, the pressing shaft is arranged between the outer gear ring and the limiting gear ring and is provided with a compression spring, one end of the compression spring acts on the inner gear ring and the other end of the limiting sleeve, the surface of the pressing shaft is also fixed with a retaining ring to prevent the pressing shaft from being separated from the outer side of the rotating sleeve, the compression spring enables the retaining ring to, the axial length of the limit gear ring is greater than or equal to the length of the pressing shaft outer gear ring, and the limit sleeve is in snap fit with the rotating sleeve to enable the rotating sleeve to be rotatably connected with the limit sleeve.
Further, the inner side of the outer gear ring is provided with an annular groove for limiting the spring.
Furthermore, the lower ends of the first supporting rod and the second supporting rod are fixed with anti-skidding bases.
Furthermore, a fixing rod is fixed below the desktop and fixedly connected with a limiting sleeve.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses utilize the screw lead screw of bispin to come the convenient angle that opens of controlling the chair foot and then realize the lift of chair. This embodiment still provides one kind and can do benefit to the angle adjusting device who adjusts the desktop angle.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic sectional view of the short adjustment device of the present invention (fig. 2A-a partial sectional view).
Fig. 4 is a partially enlarged schematic view of fig. 3 according to the present invention.
Fig. 5 is a schematic view of the structure of the rotating sleeve of the present invention.
Fig. 6 is a schematic view of the structure of the stop collar of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 6, a height-adjustable arm-chair 10 comprises a seat and a screw rod 20 which is arranged below the seat and hinged to the seat, wherein the screw rod is formed by oppositely screwing the middle part to two sides, the two ends of the screw rod are respectively provided with a first support rod 210 and a second support rod 220 which are arranged downwards in a threaded fit manner, the middle parts of the first support rod and the second support rod are mutually crossed, the middle parts of the first support rod and the second support rod are connected through a hinge, the side part of the seat is provided with a connecting rod 40, and the upper end of the connecting rod 40 is connected.
In this embodiment, a pair of screws 20 is disposed below the seat, a first support rod and a second support rod are disposed below each screw, transmission gears 201 are fixedly connected to the middle portions of the two screws, and adjacent transmission gears are connected by chains 202 to realize synchronous rotation.
In this embodiment, the two sides of the bottom of the seat 10 are provided with bearing seats 110, two ends of the lead screw are hinged to the seat through bearings in the bearing seats, and one end of the lead screw extends out of the outer sides of the bearing seats and is coaxially and fixedly connected with a rotating handle.
The rotating handle 230 can rotate the screw rod 20 by rotating one of the screw rods 20, so that the upper ends of the supporting rods 210 and the second supporting rods 220 can be driven to move close or move back to back, and then the angles of the first supporting rods 210 and the second supporting rods 220 are changed, so that the height of the seat can be saved or the seat can be reduced.
First bracing piece 210 and second bracing piece 220 the shape can be shaft-like also can be continuous reverse extension's horn shape, the crisscross position of first bracing piece 210 and second bracing piece 220 all can be with hinged joint, the middle part hinged joint of first bracing piece 210 and second bracing piece 220 of horn shape in this embodiment, in order to improve stability, the utility model discloses two sets of hinged joint department of first bracing piece 210 and second bracing piece 220 is connected through transverse connection spare.
The anti-slip bases 50 are disposed at the bottoms of the first support bar 210 and the second support bar 220 to improve the friction force with the ground.
In order to adjust desktop 30 that can the adaptability, in this embodiment, the connecting rod upper end be connected with the desktop through angle adjusting device, the connecting rod lower extreme is connected with the seat through angle adjusting device, angle adjusting device structure the same difference lie in the fixed mode of angle adjusting device, describe with connecting rod 40 upper end and desktop connection position below.
The angle adjusting device comprises a limiting sleeve 610 fixedly connected with the tabletop 30, the limiting sleeve 610 is provided with a limiting gear ring 611 in the limiting sleeve, the outer side of the limiting sleeve 610 is sleeved with a rotating sleeve 620, the upper end of the connecting rod is sleeved outside the rotating sleeve 620, the rotating capacity of the connecting rod depends on the rotation of the rotating sleeve 620, the inner side of the rotating sleeve 620 is provided with an inner gear ring 621, the rotating sleeve is sleeved with a pressing shaft 630, the outer surface of the pressing shaft is provided with an outer gear ring 631 which can be engaged with the inner gear ring and the limit gear ring at the same time, the pressing shaft is provided with a compression spring 640 between the outer gear ring and the limit gear ring, one end of the compression spring 640 acts on the inner gear ring, the other end acts on the limit sleeve, a retainer ring 632 is fixed to the surface of the pressing shaft 630 to prevent the pressing shaft from coming off the outside of the rotating sleeve, stop collar 610 and the rotation sleeve 620 snap-fit make the rotation sleeve can be connected with the stop collar rotatoryly. The axial length of the limiting gear ring is larger than or equal to the length of the pressing external gear ring.
In this embodiment, the stop collar 610 has a ring groove 612 on the outside, and the lower portion of the sleeve 620 has a snap fit with the ring groove.
The compression spring 640 makes the retainer ring abut against the stop collar, and the outer gear ring 631 of the pressing shaft 630 can simultaneously contact the inner gear ring 621 and the stop gear ring 611, thereby limiting the relative rotation of the rotating sleeve 620 and the stop collar.
When the pressing shaft 630 overcomes the elastic force of the spring to enable the outer gear ring 631 to be only in contact with the limit gear ring 611, the limit rotating sleeve 620 and the outer gear ring 631 of the limit sleeve are only located in the limit sleeve, and therefore the rotating sleeve 620 and the limit sleeve can rotate relatively to adjust the angle of the table top.
In addition, in the present embodiment, the inner side of the outer ring gear has an annular groove 632 that restricts the spring. The middle part of the limiting sleeve 610 is provided with an annular column 613 for limiting the spring, and a fixed rod is fixed below the table top and is fixedly connected with the limiting sleeve.
Similar to the connection between the table top and the connecting rod, in this embodiment, the lower end of the connecting rod 40 is connected to the seat 10 by an angle adjustment method, and the difference is that the limiting sleeve is fixedly connected to the seat, and the rotating sleeve is fixedly connected to the lower end of the connecting rod. The angle adjustment of the lower end of the link with the seat is achieved by pressing the pressing shaft 630.
The angle adjusting device is simple in structure, convenient to use and easy to operate.
The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.
The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (8)
1. The utility model provides a but height-adjusting's arm-chair, its characterized in that includes the seat and sets up in the seat below and articulate the lead screw in the seat, the lead screw is opposite to both sides screw thread direction by the middle part, screw thread fit has first bracing piece and the second bracing piece that sets up downwards respectively at the lead screw both ends, first bracing piece and second bracing piece middle part intercrossing and middle part are through hinged joint, the seat lateral part is provided with the connecting rod, the connecting rod upper end is connected with the desktop.
2. The height-adjustable arm-chair according to claim 1, wherein a pair of lead screws are arranged below the chair, a first support rod and a second support rod are arranged below each lead screw, transmission gears are fixedly connected to the middle parts of the two lead screws, and the adjacent transmission gears are connected through a chain to realize synchronous rotation.
3. The height-adjustable arm-chair according to claim 1, wherein bearing seats are arranged on two sides of the bottom of the seat, two ends of the lead screw are hinged with the seat through bearings in the bearing seats, and one end of the lead screw extends out of the outer sides of the bearing seats and is coaxially and fixedly connected with a rotating handle.
4. The height-adjustable arm chair according to claim 1, wherein the upper end of the connecting rod is connected to the table top via an angle adjusting device, the angle adjusting device comprises a limiting sleeve fixedly connected to the table top, the limiting sleeve is provided with a limiting gear ring inside, a rotating sleeve is sleeved outside the limiting sleeve, the upper end of the connecting rod is sleeved outside the rotating sleeve, the rotating sleeve is provided with an inner gear ring inside, a pressing shaft is sleeved inside the rotating sleeve, the outer surface of the pressing shaft is provided with an outer gear ring capable of being engaged with the inner gear ring and the limiting gear ring simultaneously, the pressing shaft is provided with a compression spring between the outer gear ring and the limiting gear ring, one end of the compression spring acts on the inner gear ring and the other end acts on the limiting sleeve, a retaining ring is fixed on the surface of the pressing shaft to prevent the pressing shaft from being disengaged from the outer side of the rotating sleeve, and the compression, and the outer gear ring of the pressing shaft can be simultaneously contacted with the inner gear ring and the limiting gear ring, the axial length of the limiting gear ring is greater than or equal to that of the outer gear ring of the pressing shaft, and the limiting sleeve is in snap fit with the rotating sleeve to enable the rotating sleeve to be rotatably connected with the limiting sleeve.
5. The height-adjustable arm chair according to claim 1, wherein the lower end of the connecting rod is connected to the seat through an angle adjusting device, the angle adjusting device comprises a stop collar fixedly connected to the seat, the stop collar has a stop gear ring inside the stop collar, a rotating sleeve is sleeved outside the stop collar, the lower end of the connecting rod is sleeved outside the rotating sleeve, a pressing shaft is sleeved inside the rotating sleeve, an outer gear ring capable of engaging with the inner gear ring and the stop gear ring is arranged on the outer surface of the pressing shaft, a compression spring is arranged between the outer gear ring and the stop gear ring, one end of the compression spring acts on the inner gear ring and the other end of the compression spring acts on the stop collar, a retaining ring is fixed on the surface of the pressing shaft to prevent the pressing shaft from coming off from the outer side of the rotating sleeve, and the compression spring enables the retaining ring to abut against the stop collar, and the outer gear ring of the pressing shaft can be simultaneously contacted with the inner gear ring and the limiting gear ring, the axial length of the limiting gear ring is greater than or equal to that of the outer gear ring of the pressing shaft, and the limiting sleeve is in snap fit with the rotating sleeve to enable the rotating sleeve to be rotatably connected with the limiting sleeve.
6. An adjustable height chair as claimed in claim 4 or 5, wherein the outer toothed ring has an annular groove inside which the spring is restrained.
7. The chair of claim 1 or 2, wherein the lower ends of the first and second support rods are fixed with anti-slip bases.
8. The chair as claimed in claim 4, wherein a fixing rod is fixed below the table top and is fixedly connected with the position-limiting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821943950.8U CN209807711U (en) | 2018-11-23 | 2018-11-23 | Height-adjustable arm-chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821943950.8U CN209807711U (en) | 2018-11-23 | 2018-11-23 | Height-adjustable arm-chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209807711U true CN209807711U (en) | 2019-12-20 |
Family
ID=68868690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821943950.8U Expired - Fee Related CN209807711U (en) | 2018-11-23 | 2018-11-23 | Height-adjustable arm-chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209807711U (en) |
-
2018
- 2018-11-23 CN CN201821943950.8U patent/CN209807711U/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: 20191220 Termination date: 20201123 |