CN213605393U - Seat chassis with back inclination and elevation force adjusting device - Google Patents
Seat chassis with back inclination and elevation force adjusting device Download PDFInfo
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- CN213605393U CN213605393U CN202022720222.4U CN202022720222U CN213605393U CN 213605393 U CN213605393 U CN 213605393U CN 202022720222 U CN202022720222 U CN 202022720222U CN 213605393 U CN213605393 U CN 213605393U
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Abstract
A chair chassis with a back leaning and leaning force adjusting device comprises a top cover, a bottom shell, a leaning and leaning force adjusting device, a back connecting assembly and a driving mechanism which are arranged at the rear part of the bottom shell, and further comprises a hinged seat, a transmission shaft, a guide shaft and a transmission mechanism, wherein two ends of an upper fixed shaft are connected with fixed shaft holes and extend out of the bottom shell, two ends of a sliding shaft are in sliding fit with the sliding holes and extend out of the bottom shell, and the guide shaft is fixed with the fixed shaft holes in the front part of the bottom shell; the tilting force adjusting devices are respectively arranged at two sides of a supporting shaft seat in the bottom shell, one end of each tilting force adjusting device is in rotating fit with the sliding shaft, the other end of each tilting force adjusting device is hinged with the hinge seat through the transmission shaft, and the hinge seat is in rotating fit with the guide shaft; the transmission mechanism is matched with the pin joint frame plate and the guide shaft, the transmission mechanism drives the transmission shaft, and the driving mechanism drives the transmission mechanism. The two inclination and elevation force adjusting devices are respectively arranged on two sides in the bottom shell to avoid the support shaft seats, and the corresponding telescopic stroke of the inclination and elevation force adjusting devices is increased; the back moves backward due to the gravity when bending backward, so that the stability is improved.
Description
Technical Field
The invention relates to a chair with a back capable of bending backwards, in particular to a chair chassis with a back bending force adjusting device.
Background
At present prior art, a take back dynamics of leaning on and facing upward adjusting device's seat chassis includes top cap, drain pan, the dynamics of leaning on and facing upward adjusting device, establishes back coupling assembling and actuating mechanism at the drain pan rear portion, is equipped with the support axle bed on the bottom plate of drain pan. The back is connected with back coupling assembling, back coupling assembling with incline and face upward dynamics adjusting device cooperation. There are problems in that: when the back is tilted backwards, the gravity center of the back is close to the front, and the back is easy to topple.
Disclosure of Invention
The purpose of the invention is: the seat chassis with the back inclination and elevation force adjusting device has the advantages of being large in inclination angle and stable.
The invention is realized by the following steps: the utility model provides a take back dynamics of leaning on and facing upward adjusting device's seat chassis, includes top cap, drain pan, the dynamics of leaning on adjusting device, establishes back coupling assembling and the actuating mechanism at the drain pan rear portion, is equipped with the support axle bed on the bottom plate of drain pan, and its special character lies in: the bottom shell comprises two pin joint frame plates arranged on a bottom plate at the front part of the support shaft seat, a fixed shaft hole arranged at the upper part of the rear end of the side wall plate, a sliding hole arranged at the lower part of the rear end of the side wall plate and a fixed shaft hole arranged at the upper part of the side wall plate, wherein the pin joint frame plates are provided with rotating shaft holes;
the back connecting component comprises a seat frame, an upper dead axle arranged at the upper part of the seat frame and a sliding axle arranged at the lower part of the seat frame,
also comprises a hinged seat, a transmission shaft, a guide shaft and a transmission mechanism,
two ends of the upper fixed shaft are connected with the fixed shaft hole and extend out of the bottom shell, two ends of the sliding shaft are in sliding fit with the sliding hole and extend out of the bottom shell, and the guide shaft is fixed with the fixed shaft hole in the front of the bottom shell; the tilting force adjusting devices are respectively arranged at two sides of a supporting shaft seat in the bottom shell, one end of each tilting force adjusting device is in rotating fit with the sliding shaft, the other end of each tilting force adjusting device is hinged with the hinge seat through the transmission shaft, and the hinge seat is in rotating fit with the guide shaft; the transmission mechanism is matched with the pin joint frame plate and the guide shaft, the transmission mechanism drives the transmission shaft, and the driving mechanism drives the transmission mechanism.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: the transmission mechanism comprises a driving shaft, a driving cam, a transmission frame and a driven plate,
the transmission frame comprises a top shaft sleeve, a support rod and a bottom shaft sleeve;
the driven plate comprises a shaft hole arranged at the driving end, a sliding hook arranged at the driven end and an arc guide groove;
the driving cams are fixed at two ends of the driving shaft, and the driving shaft is in rotating fit with the rotating shaft hole of the pin joint frame plate; the top shaft sleeve is pivoted with the driven plate through a fixed shaft, and the bottom shaft sleeve is in rotating fit with the transmission shaft; the driven plate is matched with the driving cam, a sliding hook of the driven plate is in sliding fit with the guide shaft, and the arc guide groove is in rotating fit with the bottom shaft sleeve; the drive mechanism drives the drive shaft.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: the driving cam comprises a linear plane and a driving surface with an involute-shaped outer contour, and the linear plane and the driving surface are matched with the driven plate.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: the driving surface of the driving cam is provided with a plurality of sub driving surfaces, and two adjacent sub driving surfaces are connected.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: the driven plates are two in number, and the driven plates are connected together through the fixed connecting plates.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: the driving mechanism comprises a driving gear, an inertia gear, a driven gear, a gear seat plate and a driving rod,
the driving gear, the inert gear and the gear seat plate are pivoted, the driven gear is fixedly connected with the driving shaft, and the driving rod is fixedly connected with the driving gear.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: and the driving gear is provided with a shaft head which is in running fit with a shaft hole of the side wall plate of the bottom shell.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: and the driven gear is provided with a stop block.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: the driving mechanism comprises a driving gear, an inert gear, a driven gear, a gear seat plate and a driving rod, wherein a shaft head is arranged on the driving gear,
the driving gear, the inert gear and the gear seat plate are pivoted, the driven gear is connected with the transmission mechanism, and the driving rod is fixedly connected with the driving gear; the shaft head is in running fit with the shaft hole of the side wall plate of the bottom shell.
The seat chassis with the back leaning and ascending force adjusting device is characterized in that: the sliding hole is arc-shaped.
The invention relates to a seat chassis with a back inclination and elevation force adjusting device, which is characterized in that a hinged seat, a transmission shaft, a guide shaft and a transmission mechanism are arranged, two inclination and elevation force adjusting devices are respectively arranged at two sides in a bottom shell to avoid a support shaft seat, and the telescopic stroke of the corresponding inclination and elevation force adjusting devices is increased; the back moves backward due to the gravity when bending backward, so that the stability is improved.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is one of exploded perspective views of the present invention.
Fig. 3 is a second exploded perspective view of the present invention.
Fig. 4 is a third exploded perspective view of the present invention.
Fig. 5 is one of perspective views of the transmission mechanism of the present invention.
Fig. 6 is a second perspective view of the transmission mechanism of the present invention.
Fig. 7 is one of the exploded perspective views of the transmission mechanism of the present invention.
Fig. 8 is a second exploded perspective view of the transmission mechanism of the present invention.
Fig. 9 is a top view of the present invention with the top cover removed.
Fig. 10 is a view a-a of fig. 9.
Fig. 11 is a view B-B of fig. 9.
Fig. 12 is a perspective view of the tilting force adjustment device and the hinged seat of the present invention.
Fig. 13 is a perspective view of the drive frame of the present invention.
Fig. 14 is a perspective view of the drive cam of the present invention.
Fig. 15 is a front view of the drive cam of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a seat chassis with a back leaning and leaning force adjusting device comprises a top cover 1, a bottom shell 2, a leaning and leaning force adjusting device 3, a back connecting component 4 and a driving mechanism 5, wherein the back connecting component 4 and the driving mechanism 5 are arranged at the rear part of the bottom shell, and a supporting shaft seat 21 is arranged on a bottom plate of the bottom shell 2;
the bottom shell 2 comprises two pivot frame plates 22 arranged on a bottom plate at the front part of the support shaft seat, a fixed shaft hole 231 arranged at the upper part of the rear end of the side wall plate, a sliding hole 232 at the lower part of the rear end of the side wall plate and a fixed shaft hole 24 arranged at the upper part of the side wall plate, wherein the pivot frame plates 22 are provided with rotating shaft holes; the sliding hole 232 is arc-shaped;
the back connecting assembly 4 comprises a seat frame 41, an upper dead axle 42 arranged at the upper part of the seat frame and a sliding axle 43 arranged at the lower part of the seat frame,
also comprises a hinged seat 6, a transmission shaft 7, a guide shaft 8 and a transmission mechanism 9,
the two ends of the upper fixed shaft 42 are connected with the fixed shaft hole 231 and extend out of the bottom shell 2, the two ends of the sliding shaft 43 are in sliding fit with the sliding hole 232 and extend out of the bottom shell 2, and the guide shaft 8 is fixed with the fixed shaft hole 24 in the front part of the bottom shell 2; the inclination and elevation force adjusting devices 3 are respectively arranged at two sides of a supporting shaft seat in the bottom shell 2, one end of each inclination and elevation force adjusting device 3 is in rotating fit with the sliding shaft 43, the other end of each inclination and elevation force adjusting device is hinged with the hinge seat 6 through the transmission shaft 7, and the hinge seat 6 is in rotating fit with the guide shaft 8; the transmission mechanism is in pivot joint fit with the pivot frame plate 22 and the guide shaft 8, the transmission mechanism drives the transmission shaft 7, and the driving mechanism 5 drives the transmission mechanism 9.
The transmission mechanism 9 includes a drive shaft 91, a drive cam 92, a transmission frame 93 and a driven plate 94,
as shown in fig. 13, the transmission frame 93 includes a top shaft sleeve 931, a support rod 932, and a bottom shaft sleeve 933;
as shown in fig. 7 and 8, the driven plate 94 includes a shaft hole 941 provided at the driving end, a slide hook 942 provided at the driven end, and a circular arc guide groove 943;
the driving cam 92 is fixed at two ends of the driving shaft 91, and the driving shaft 91 is in rotating fit with the rotating shaft hole of the pivot frame plate 22; the top shaft sleeve 931 is pivoted with the driven plate 94 through a fixed shaft, the bottom shaft sleeve 933 is in rotating fit with the transmission shaft 7, and the bottom shaft sleeve 933 is positioned on the transmission shaft 7 between the two hinge seats 6; the driven plate 94 is matched with the driving cam 92, the sliding hook 942 of the driven plate 94 is matched with the guide shaft 8 in a sliding way, and the circular arc guide groove 943 is matched with the bottom shaft sleeve 933 in a rotating way; the drive mechanism 5 drives the drive shaft 91.
As shown in fig. 14 and 15, the driving cam 92 includes a linear plane 921 and a driving surface 922 with an involute-shaped outer contour, and the linear plane 921 and the driving surface 922 are engaged with the driven plate 94; as shown in fig. 5 and 6, the straight plane 921 abuts on the driven plate 94; in the state shown in fig. 5, 6, the driving cam 92 rotates clockwise, and then the driving surface 922 engages with the driven plate 94;
the invention can also be realized as follows: the driving surface 922 of the driving cam 92 is provided with a plurality of sub driving surfaces 923, and two adjacent sub driving surfaces 923 are connected.
Two driven plates 94 are provided, and a fixed connecting plate 944 for connecting the driven plates 94 together is provided.
The driving mechanism 5 includes a driving gear 51, an idler gear 52, a driven gear 53, a gear base plate 54 and a driving rod 55,
the driving gear 51, the idler gear 52 and the gear seat plate 54 are pivoted, the driven gear 53 is fixedly connected with the driving shaft 91, and the driving rod 55 is fixedly connected with the driving gear 51;
and a shaft head is arranged on the driving gear 51 and is in running fit with a shaft hole of a side wall plate of the bottom shell 2. The driven gear 53 is provided with a stop block 531.
In the state shown in fig. 2, 3, 10 and 11, the pressure spring of the reclining force adjustment device 3 is in a near natural state, and the driving rod 55 is rotated clockwise, the driving gear 51 and the driven gear 52 are rotated clockwise, the driving shaft 91 is rotated clockwise, and the driving gear 92 is rotated clockwise; the driven plate 94 moves upwards, the sliding hook 942 is in sliding fit with the guide shaft 8, and the arc guide groove 943 is in sliding and rotating fit with the bottom shaft sleeve 933; the transmission frame 93 rotates clockwise, the leaning and leaning force adjusting device 3 moves leftwards, and the sliding shaft 43 slides leftwards at the moment; the pressure spring of the leaning and leaning force adjusting device 3 is in a compressed state.
The invention relates to a tilting force adjusting device 3, namely Chinese patent 201721297623.5, which is invented and named as follows: a device for adjusting the tilting force of an office chair.
What has been described above is merely a preferred embodiment of the present invention. It should be noted that a person skilled in the art could make several modifications and variations without departing from the principle of the present invention, which should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a take back dynamics of leaning on adjusting device's seat chassis, includes top cap, drain pan, the dynamics of leaning on adjusting device, establishes back coupling assembling and the actuating mechanism at the drain pan rear portion, is equipped with support axle bed, its characterized in that on the bottom plate of drain pan: the bottom shell comprises two pin joint frame plates arranged on a bottom plate at the front part of the support shaft seat, a fixed shaft hole arranged at the upper part of the rear end of the side wall plate, a sliding hole arranged at the lower part of the rear end of the side wall plate and a fixed shaft hole arranged at the upper part of the side wall plate, wherein the pin joint frame plates are provided with rotating shaft holes;
the back connecting component comprises a seat frame, an upper dead axle arranged at the upper part of the seat frame and a sliding axle arranged at the lower part of the seat frame,
also comprises a hinged seat, a transmission shaft, a guide shaft and a transmission mechanism,
two ends of the upper fixed shaft are connected with the fixed shaft hole and extend out of the bottom shell, two ends of the sliding shaft are in sliding fit with the sliding hole and extend out of the bottom shell, and the guide shaft is fixed with the fixed shaft hole in the front of the bottom shell; the tilting force adjusting devices are respectively arranged at two sides of a supporting shaft seat in the bottom shell, one end of each tilting force adjusting device is in rotating fit with the sliding shaft, the other end of each tilting force adjusting device is hinged with the hinge seat through the transmission shaft, and the hinge seat is in rotating fit with the guide shaft; the transmission mechanism is matched with the pin joint frame plate and the guide shaft, the transmission mechanism drives the transmission shaft, and the driving mechanism drives the transmission mechanism.
2. A seat pan with a back reclining force adjustment device as claimed in claim 1, wherein: the transmission mechanism comprises a driving shaft, a driving cam, a transmission frame and a driven plate,
the transmission frame comprises a top shaft sleeve, a support rod and a bottom shaft sleeve;
the driven plate comprises a shaft hole arranged at the driving end, a sliding hook arranged at the driven end and an arc guide groove;
the driving cams are fixed at two ends of the driving shaft, and the driving shaft is in rotating fit with the rotating shaft hole of the pin joint frame plate; the top shaft sleeve is pivoted with the driven plate through a fixed shaft, and the bottom shaft sleeve is in rotating fit with the transmission shaft; the driven plate is matched with the driving cam, a sliding hook of the driven plate is in sliding fit with the guide shaft, and the arc guide groove is in rotating fit with the bottom shaft sleeve; the drive mechanism drives the drive shaft.
3. A seat pan with a back reclining force adjustment device as claimed in claim 2, wherein: the driving cam comprises a linear plane and a driving surface with an involute-shaped outer contour, and the linear plane and the driving surface are matched with the driven plate.
4. A seat pan with back reclining force adjustment device as claimed in claim 3, wherein: the driving surface of the driving cam is provided with a plurality of sub driving surfaces, and two adjacent sub driving surfaces are connected.
5. A seat pan with a back reclining force adjustment device as claimed in claim 2, wherein: the driven plates are two in number, and the driven plates are connected together through the fixed connecting plates.
6. A seat pan with back reclining force adjustment device as claimed in claim 2, 3, 4 or 5, wherein: the driving mechanism comprises a driving gear, an inertia gear, a driven gear, a gear seat plate and a driving rod,
the driving gear, the inert gear and the gear seat plate are pivoted, the driven gear is fixedly connected with the driving shaft, and the driving rod is fixedly connected with the driving gear.
7. A seat pan with back reclining force adjustment device as claimed in claim 6, wherein: and the driving gear is provided with a shaft head which is in running fit with a shaft hole of the side wall plate of the bottom shell.
8. A seat pan with back reclining force adjustment device as claimed in claim 6, wherein: and the driven gear is provided with a stop block.
9. A seat pan with a back reclining force adjustment device as claimed in claim 1, wherein: the driving mechanism comprises a driving gear, an inert gear, a driven gear, a gear seat plate and a driving rod, wherein a shaft head is arranged on the driving gear,
the driving gear, the inert gear and the gear seat plate are pivoted, the driven gear is connected with the transmission mechanism, and the driving rod is fixedly connected with the driving gear; the shaft head is in running fit with the shaft hole of the side wall plate of the bottom shell.
10. A seat pan with a back reclining force adjustment device as claimed in claim 2, wherein: the sliding hole is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720222.4U CN213605393U (en) | 2020-11-21 | 2020-11-21 | Seat chassis with back inclination and elevation force adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720222.4U CN213605393U (en) | 2020-11-21 | 2020-11-21 | Seat chassis with back inclination and elevation force adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213605393U true CN213605393U (en) | 2021-07-06 |
Family
ID=76637309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022720222.4U Active CN213605393U (en) | 2020-11-21 | 2020-11-21 | Seat chassis with back inclination and elevation force adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213605393U (en) |
-
2020
- 2020-11-21 CN CN202022720222.4U patent/CN213605393U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |