CN215838009U - Chair leg support adjusting mechanism - Google Patents
Chair leg support adjusting mechanism Download PDFInfo
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- CN215838009U CN215838009U CN202121301261.9U CN202121301261U CN215838009U CN 215838009 U CN215838009 U CN 215838009U CN 202121301261 U CN202121301261 U CN 202121301261U CN 215838009 U CN215838009 U CN 215838009U
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- connecting rod
- spline shaft
- leg
- side arm
- cantilever
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Abstract
The utility model relates to a chair leg support adjusting mechanism which comprises a supporting plate, wherein two sides of the bottom surface of the supporting plate are fixedly provided with cantilevers extending forwards, the front end parts of the single cantilevers are respectively and rotatably provided with a short connecting rod, the cantilevers positioned behind the short connecting rods are rotatably provided with a long connecting rod, and the end parts of the two short connecting rods are jointly provided with a spline shaft; the spline shaft is characterized by also comprising leg supports, wherein two ends of the spline shaft are rotatably arranged with the leg supports, and the end parts of the two long connecting rods are respectively rotatably connected with the leg supports; the spline shaft is driven by a power mechanism to rotate; the cantilever, the short connecting rod, the long connecting rod and the leg support form a four-bar mechanism, the spline shaft rotates to drive the short connecting rod to rotate relative to the cantilever, the leg support moves along with the short connecting rod, and the long connecting rod is installed between the leg support and the cantilever in a rotating mode, so that the leg support extends forwards or retracts backwards relative to the cantilever, the leg support extends forwards or retracts backwards, and the leg support is convenient and reliable to use and convenient for a user to use.
Description
Technical Field
The utility model relates to the technical field of seats, in particular to a seat leg support adjusting mechanism.
Background
With the continuous improvement of living standard, people's requirement to living comfort level is higher and higher, for example car seat or electric seat also require to possess certain auxiliary function in order to meet the demand of comfort level. Leg rests are increasingly placed on seats as structures for supporting legs and improving comfort during lying and resting. The existing leg support has the disadvantages of relatively complex structure, more parts, more occupied installation space and higher production and manufacturing cost.
SUMMERY OF THE UTILITY MODEL
The applicant provides a seat leg support adjustment mechanism rational in infrastructure to shortcoming among the above-mentioned prior art to realize the regulation of leg support and use, convenient and reliable, the helping hand is used in promoting the user and is experienced, and the practicality is good.
The technical scheme adopted by the utility model is as follows:
a chair leg support adjusting mechanism comprises a supporting plate, wherein cantilevers extending forwards are fixedly arranged on two sides of the bottom surface of the supporting plate, short connecting rods are respectively rotatably arranged at the front end parts of the single cantilevers, a long connecting rod is rotatably arranged on the cantilever behind the short connecting rods, and spline shafts are jointly arranged at the end parts of the two short connecting rods; the spline shaft is characterized by also comprising leg supports, wherein two ends of the spline shaft are rotatably arranged with the leg supports, and the end parts of the two long connecting rods are respectively rotatably connected with the leg supports; the spline shaft is driven by a power mechanism to rotate.
As a further improvement of the above technical solution:
the leg support has the following structure: the side arm plates are arranged in parallel at intervals, the two side arm plates are fixedly integrated through connecting rods arranged in parallel at intervals, and the spline shaft is parallel to the connecting rods.
The single side arm plate is of a V-shaped structure with an opening facing downwards, the spline shaft is rotatably installed at a corner of the V-shaped structure, and the end part of the long connecting rod is rotatably connected with the rear end part of the V-shaped structure.
One of the connecting rods is fixedly arranged at the rear end parts of the V-shaped structures of the two side arm plates, two ends of the connecting rod outwards penetrate through the side arm plates, and the long connecting rod is rotatably sleeved at the outwards protruding end part of the connecting rod.
The spline shaft is characterized in that two ends of the spline shaft outwards penetrate through the side arm plates, the end part of the spline shaft positioned on the outer sides of the side arm plates is sleeved with the short connecting rod, and the spline shaft is fixedly connected with the short connecting rod through a spline structure.
The two arms of the V-shaped structure of the single side arm plate form an obtuse angle.
The inner side surface of one side arm plate is provided with a motor, the output end of the motor is connected with the spline shaft, and the motor forms a power mechanism for driving the spline shaft to rotate.
One end of a single cantilever is fixedly arranged with the supporting plate, the other end of the cantilever is rotatably connected with the short connecting rod, and the middle part of the cantilever is rotatably connected with the long connecting rod.
The utility model has the following beneficial effects:
the leg support is compact and reasonable in structure and convenient to operate, the short connecting rod is driven to rotate relative to the cantilever through the rotation of the spline shaft, the leg support moves along with the short connecting rod, and the long connecting rod is installed between the leg support and the cantilever in a rotating mode, so that the leg support extends forwards or retracts backwards relative to the cantilever, the adjustment of the forward extension or the backward retraction of the leg support is realized, the use is convenient and reliable, and the use experience of a user is improved by effectively assisting the power; the four-bar mechanism is formed by the cantilever, the short connecting bar, the long connecting bar and the leg support, the structure is simple and ingenious, the layout is compact and reasonable, the requirement on installation space is effectively reduced, the production cost is reduced, and the practicability is good.
Drawings
Fig. 1 is a schematic structural view (leg rest extended state) of the present invention.
Fig. 2 is a schematic structural view of the present invention (with the leg rest extended, from another perspective).
Fig. 3 is a schematic structural view of the present invention (leg rest retracted state).
Wherein: 1. a leg rest; 2. a short connecting rod; 3. a long connecting rod; 4. a support plate; 5. a motor; 6. a spline shaft; 11. a side arm plate; 12. a connecting rod; 41. a cantilever.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, the chair leg rest adjusting mechanism of the embodiment includes a supporting plate 4, two sides of the bottom surface of the supporting plate 4 are fixedly provided with cantilevers 41 extending forward, the front end portions of the cantilevers 41 are respectively rotatably provided with a short connecting rod 2, the cantilevers 41 behind the short connecting rods 2 are rotatably provided with a long connecting rod 3, and the end portions of the two short connecting rods 2 are jointly provided with a spline shaft 6; the spline shaft is characterized by further comprising a leg support 1, wherein two ends of the spline shaft 6 are rotatably mounted with the leg support 1, and the end parts of the two long connecting rods 3 are respectively rotatably connected with the leg support 1; the spline shaft 6 is driven by a power mechanism to rotate; the spline shaft 6 rotates to drive the short connecting rod 2 to rotate relative to the cantilever 41, the leg support 1 moves along with the short connecting rod 2, and the long connecting rod 3 is installed between the leg support 1 and the cantilever 41 in a rotating mode, so that the leg support 1 extends forwards or retracts backwards relative to the cantilever 41, and the adjustment of the forward extension or the backward retraction of the leg support 1 is achieved.
The leg support 1 has the structure that: the side arm plates 11 are arranged in parallel at intervals at left and right, the two side arm plates 11 are fixedly arranged into a whole through connecting rods 12 arranged in parallel at intervals, the spline shaft 6 is parallel to the connecting rods 12, and two ends of the spline shaft 6 are rotatably connected with the two side arm plates 11.
The single side arm plate 11 is of a V-shaped structure with an opening facing downwards, the spline shaft 6 is rotatably installed at a corner of the V-shaped structure, and the end part of the long connecting rod 3 is rotatably connected with the rear end part of the V-shaped structure.
One connecting rod 12 is fixedly arranged at the rear end parts of the V-shaped structures of the two side arm plates 11, two ends of the connecting rod 12 outwards penetrate through the side arm plates 11, and the long connecting rod 3 is rotatably sleeved at the outwards protruding end part of the connecting rod 12.
Two ends of the spline shaft 6 outwards penetrate through the side arm plates 11, the end part of the spline shaft 6 positioned outside the side arm plates 11 is sleeved with the short connecting rod 2, and the spline shaft 6 is fixedly connected with the short connecting rod 2 through a spline structure; the spline structure enables the connection and transmission between the spline shaft 6 and the short connecting rod 2 to be stable and reliable.
Two arms of the single side arm plate 11V-shaped structure form an obtuse angle; when the leg support 1 extends forwards, the front arm of the side arm plate 11V-shaped structure is positioned in front of the support plate 4, and the front arm can move to be approximately parallel to the support plate 4; when the leg rest 1 is retracted rearward, the rear arm of the side arm plate 11V-shaped structure is located below the support plate 4, and the rear arm can be moved to be approximately parallel to the support plate 4.
The inner side surface of one of the side arm plates 11 is provided with a motor 5, the output end of the motor 5 is connected with the spline shaft 6, and the motor 5 forms a power mechanism for driving the spline shaft 6 to rotate; the motor 5 directly drives the spline shaft 6 to rotate, or the motor 5 drives the spline shaft 6 to rotate through a transmission structure such as gear transmission and the like.
One end of a single cantilever 41 is fixedly arranged with the support plate 4, the other end of the cantilever 41 is rotatably connected with the short connecting rod 2, and the middle part of the cantilever 41 is rotatably connected with the long connecting rod 3.
In the embodiment, the four-bar linkage mechanism is formed among the cantilever 41, the short connecting rod 2, the long connecting rod 3 and the leg support 1, the structure is simple and ingenious, the layout is compact and reasonable, the requirement on the whole installation space of the leg support is effectively reduced, the production cost is reduced, and the practicability is good.
The use mode of the utility model is as follows:
the motor 5 works to drive the spline shaft 6 to rotate, and the short connecting rod 2 is driven by the spline shaft 6 to rotate by taking the connecting part of the short connecting rod and the cantilever 41 as the center of a circle; the rotation of the short connecting rod 2 drives the leg support 1 to move, and the long connecting rod 3 is arranged between the leg support 1 and the cantilever 41 in a co-rotating way, so that the leg support 1 extends forwards relative to the supporting plate 4, as shown in fig. 1 and 2; the motor 5 is reversed to retract the leg rest 1 backwards relative to the support plate 4, as shown in fig. 3; the position of the leg rest 1 relative to the support plate 4 is adjusted by the rotation angle of the motor 5.
The leg support device is compact, ingenious and reasonable in structure, convenient and reliable to use and capable of achieving position adjustment of the leg support 1 relative to the support plate 4, and helps to improve use experience of users.
The above description is intended to illustrate the present invention and not to limit the present invention, which is defined by the scope of the claims, and may be modified in any manner within the scope of the present invention.
Claims (8)
1. The utility model provides a seat leg holds in palm adjustment mechanism which characterized in that: the device comprises a supporting plate (4), cantilevers (41) extending forwards are fixedly arranged on two sides of the bottom surface of the supporting plate (4), a short connecting rod (2) is rotatably arranged at the front end part of each cantilever (41) respectively, a long connecting rod (3) is rotatably arranged on the cantilever (41) positioned behind the short connecting rods (2), and spline shafts (6) are arranged at the end parts of the two short connecting rods (2) together; the spline shaft is characterized by further comprising leg supports (1), wherein two ends of the spline shaft (6) are rotatably mounted with the leg supports (1), and the end parts of the two long connecting rods (3) are respectively rotatably connected with the leg supports (1); the spline shaft (6) is driven by the power mechanism to rotate.
2. A leg rest adjustment mechanism for a seat as claimed in claim 1, wherein: the leg support (1) is structurally characterized in that: the novel spline shaft comprises side arm plates (11) which are arranged in parallel at left and right intervals, wherein the two side arm plates (11) are fixedly integrated through connecting rods (12) which are arranged in parallel at intervals, and the spline shaft (6) is parallel to the connecting rods (12).
3. A leg rest adjustment mechanism for a seat as claimed in claim 2, wherein: the single side arm plate (11) is of a V-shaped structure with an opening facing downwards, the spline shaft (6) is rotatably installed at the corner of the V-shaped structure, and the end part of the long connecting rod (3) is rotatably connected with the rear end part of the V-shaped structure.
4. A leg rest adjustment mechanism for a seat as claimed in claim 3, wherein: one connecting rod (12) is fixedly arranged at the rear end parts of the V-shaped structures of the two side arm plates (11), the two ends of the connecting rod (12) outwards penetrate through the side arm plates (11), and the long connecting rod (3) is rotatably sleeved at the outwards protruding end part of the connecting rod (12).
5. A leg rest adjustment mechanism for a seat as claimed in claim 3, wherein: the spline shaft (6) both ends outwards run through side arm board (11), lie in spline shaft (6) tip suit short connecting rod (2) in the side arm board (11) outside, spline shaft (6) pass through spline structure and short connecting rod (2) fixed connection.
6. A leg rest adjustment mechanism for a seat as claimed in claim 3, wherein: the two arms of the V-shaped structure of the single side arm plate (11) form an obtuse angle.
7. A leg rest adjustment mechanism for a seat as claimed in claim 2, wherein: a motor (5) is installed on the inner side face of one side arm plate (11), the output end of the motor (5) is connected with the spline shaft (6), and the motor (5) forms a power mechanism for driving the spline shaft (6) to rotate.
8. A leg rest adjustment mechanism for a seat as claimed in claim 1, wherein: one end of a single cantilever (41) is fixedly arranged with the support plate (4), the other end of the cantilever (41) is rotatably connected with the short connecting rod (2), and the middle part of the cantilever (41) is rotatably connected with the long connecting rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121301261.9U CN215838009U (en) | 2021-06-10 | 2021-06-10 | Chair leg support adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121301261.9U CN215838009U (en) | 2021-06-10 | 2021-06-10 | Chair leg support adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215838009U true CN215838009U (en) | 2022-02-18 |
Family
ID=80315281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121301261.9U Active CN215838009U (en) | 2021-06-10 | 2021-06-10 | Chair leg support adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215838009U (en) |
-
2021
- 2021-06-10 CN CN202121301261.9U patent/CN215838009U/en active Active
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