CN212500021U - Seat back angle adjusting lock - Google Patents
Seat back angle adjusting lock Download PDFInfo
- Publication number
- CN212500021U CN212500021U CN202021920883.5U CN202021920883U CN212500021U CN 212500021 U CN212500021 U CN 212500021U CN 202021920883 U CN202021920883 U CN 202021920883U CN 212500021 U CN212500021 U CN 212500021U
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- Prior art keywords
- locking
- lock
- lock frame
- backrest
- shaft
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model provides a seat back angle modulation lock, including sleeve, rotatory lock frame, inserted sheet, extension spring, locking axle and compression spring, make the triangle-shaped shape change through adjusting locking device's total length to drive back subassembly revolutes the rotation of axes and realizes the function of back angle modulation. The locking shaft and the rotary locking frame adopt the principle of a ball screw to convert rotary motion into linear motion. The handle is used for stretching and unlocking the steel cable assembly, the inserting piece rotates, the clamping groove of the inserting piece is pulled out of the rotating lock frame, the compression spring relaxes, the locking pin moves in the rotating lock frame to extend, the locking pin drives the backrest assembly to rotate around the rotating shaft, and the angle of the backrest is reduced; the handle is loosened, and the inserting sheet is reset and locked. The increase of the angle of the backrest requires that a passenger leans against the backrest to provide a power source, the device is unlocked, the compression spring is compressed, the length of the locking pin is shortened, and the angle of the backrest is increased. The utility model has the advantages of high reliability, small size, light weight and quick operation.
Description
Technical Field
The utility model belongs to the technical field of the seat for the locking and the unblock of backrest angle modulation, concretely relates to backrest angle modulation lock.
Background
With the development of science and technology and the increasing demand of people on comfort, the comfort of the aviation seat is more and more emphasized in the modern aviation industry. The backrest angle adjustment is already a basic performance of the seat, at present, the seat angle adjustment is most commonly used by an angle adjuster, a knob of the angle adjuster is generally arranged on the side surface of a seat pan of the seat, the space requirement is large, the adjustment increment of the angle adjuster is small, the reliability of locking and unlocking is poor, and the operation is inconvenient.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a control seat angle modulation lock, easy operation, the one hand can be realized, the reliable operation, and the space requirement is little, does not receive the environmental impact, but wide application in all kinds of vehicles, boats and ships, aircraft seat improves the stability of the locking of back angle modulation and unblock.
The utility model adopts the technical scheme that:
a seat backrest angle adjusting lock comprises a sleeve, a rotary lock frame, an inserting piece and a locking shaft, wherein one end of the sleeve is connected with the rotary lock frame, the other end of the sleeve enables the locking shaft to be inserted into the rotary lock frame,
the locking axle with rotatory lock frame adopts the ball screw structure, makes rotatory lock frame rotary motion turns into locking axle linear motion, rotatory lock frame still includes locking swivel nut, shell body and flat head staff set up first draw-in groove on the locking swivel nut, the inserted sheet is "U" shape structure, and one end is connected with the flat head staff for the shell body, and the other end and first draw-in groove looks adaptation are under the effect of external force the inserted sheet rotates around the flat head staff with the one end of shell body, and the other end inserts first draw-in groove makes its locking break away from first draw-in groove unblock.
In the above scheme, the rotary lock frame further includes a planar thrust needle bearing, one end of the locking shaft is fixedly connected to the seat back, and the other end of the locking shaft is inserted into the rotary lock frame and connected to the planar thrust needle bearing, so that the planar thrust needle bearing drives the locking shaft to move axially.
In the above scheme, the adjusting lock further comprises a compression spring, the compression spring is arranged between the sleeve and the locking shaft, one end of the compression spring is connected with the rotary lock frame, the other end of the compression spring is connected with the locking shaft, an extended power source is provided for the locking shaft, the backrest angle is inclined forwards relative to the seat surface, and the reduction of the backrest angle is realized; the seat back reclines with the power source provided by the passenger leaning on the back, the compression spring is compressed, the total length of the locking device is shortened, and the increase of the angle of the back is realized.
In the above scheme, this regulation lock still includes the cable wire subassembly, cable wire subassembly one end is connected with the seat basin, the other end with the inserted sheet is connected, the pulling the cable wire subassembly makes the inserted sheet centers on the homalocephalus staff rotates, for the inserted sheet locking or unblock provide external force.
In the above scheme, the adjusting lock further comprises an extension spring, one end of the extension spring is connected with the inserting sheet, and the other end of the extension spring is connected with the steel cable component, so that the inserting sheet provides locking restoring force.
In the above scheme, the rotary lock frame further includes a gasket connected to the planar needle thrust bearing.
In the above scheme, the rotary lock frame further comprises an elastic retainer ring for hole.
In the scheme, the inner hole of the locking threaded sleeve is tapped with threads and is connected with the locking shaft through a screw rod.
The utility model has the advantages and beneficial effects:
because the utility model has the characteristics of simple structure, the space requirement is little, reliable and stable, but wide mounting is applied to all kinds of vehicles, boats and ships, aircraft seat.
The locking device for adjusting the seat angle adopts the principle of a ball screw pair to convert rotary motion into linear motion, and adopts a plane thrust needle roller bearing to ensure that the motion is smoother.
The locking device has high reliability, can determine the length of the locking pin according to the actual requirement of the angle adjusting range, meets different angle adjusting requirements, and is easy to popularize and use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the locking mechanism of the present invention.
Fig. 3 is a partial sectional view when the seat angle adjustment is unlocked.
Fig. 4 is a sectional view of the rotary lock frame mechanism of the present invention.
Fig. 5 is an exploded view of the rotary lock frame of the present invention.
Fig. 6 is a side view of the low angle position of an embodiment of the present invention.
Fig. 7 is a side view of a wide angle position of an embodiment of the present invention.
The device comprises a sleeve 1, a rotary lock frame 2, an outer shell 201, a locking threaded sleeve 202, a first clamping groove 202A, a planar thrust needle roller bearing 203, a gasket 204, a hole circlip 205, a flat head small shaft 206, an insertion sheet 3, a clamping groove 3A, an extension spring 4, a locking shaft 5, a compression spring 6, a steel cable component 7, a seat basin 8 and a backrest 9.
Detailed Description
The present invention is further described in detail by the following embodiments:
as shown in fig. 1 and 2, the locking device for adjusting the seat angle includes a sleeve 1, a rotary lock frame 2, an insertion piece 3, an extension spring 4, a locking shaft 5, a compression spring 6, a cable assembly 7, and the like, wherein one end of the sleeve 1 is connected to the rotary lock frame 2, the other end of the sleeve enables the locking shaft 5 to be inserted into the rotary lock frame 2, the compression spring 6 is disposed between the sleeve 1 and the locking shaft 5, one end of the compression spring is connected to the rotary lock frame 2, the other end of the compression spring is connected to the locking shaft 5, an extending power source is provided for the locking shaft 5, the backrest angle tilts forward relative to the seat surface, and the reduction of the backrest angle is achieved; the occupant leans against the backrest to provide power source, the backrest tilts backwards, the compression spring 6 is compressed, the total length of the locking device is shortened, and the backrest angle is increased.
The locking shaft 5 and the rotary locking frame 2 adopt a ball screw structure, so that the rotary motion of the rotary locking frame 2 is converted into the linear motion of the locking shaft 5.
One end of the extension spring 4 is connected with the inserting piece 3, and the other end of the extension spring is connected with the steel cable component 7, so that the inserting piece 3 provides locking restoring force.
As shown in fig. 3, the adjusting lock further comprises a steel cable component 7, one end of the steel cable component 7 is connected with the seat basin 8, the other end of the steel cable component 7 is connected with the inserting piece 3, and the steel cable component 7 is pulled to enable the inserting piece 3 to rotate around the flat head small shaft 206, so that external force is provided for locking or unlocking the inserting piece 3. By unlocking the steel cable component 7, the inserting piece 3 rotates, the clamping groove 3A of the inserting piece 3 is pulled out of the rotary lock frame 2 to be expanded by the compression spring 6, the locking pin 5 moves in the rotary lock frame 2, the total length of the locking device is increased, the locking pin 5 drives the backrest to rotate around the rotating shaft, and the angle of the backrest is reduced; the locking steel cable component 7, the inserting sheet 3 are reset, and the locking device is locked. When the angle of the backrest is increased, a passenger leans against the backrest to provide a power source, the unlocking device, the clamping groove of the inserting piece 3 is pulled out from the rotary lock frame 2, the compression spring 6 is compressed, the locking pin 5 moves in the rotary lock frame 2, the total length of the locking device is shortened, and the angle of the backrest is increased.
As shown in fig. 4, the rotary lock frame 2 includes an outer housing 201, a lock screw 202, a flat needle thrust bearing 203, a spacer 204, a circlip for hole 205, and a stub shaft 206. The inner hole of the locking screw sleeve 202 is tapped with threads and is connected with the locking shaft 5 through a screw rod. The flat needle thrust bearing 203 makes the revolving motion smoother. The first clamping groove is formed in the outer cylinder wall of the locking screw sleeve 202 and can be used for locking the clamping groove of the inserting piece 3 when the steel cable component is locked. An exploded view of the rotating lock frame 2 is shown in fig. 5.
The rotary lock frame 2 further comprises a plane thrust needle roller bearing 203, one end of the locking shaft 5 is fixedly connected with the seat backrest 9, and the other end of the locking shaft is inserted into the rotary lock frame 2 to be connected with the plane thrust needle roller bearing 203, so that the plane thrust needle roller bearing 203 drives the locking shaft 5 to move axially.
The seat angle adjustment locking device is mounted on the seat as shown in fig. 6 and 7, and has one end connected to the seat pan 8 and one end connected to the backrest 9. The locking shaft 5 and the rotary lock frame 2 of the seat angle adjusting lock move relatively, so that the total length of the locking device changes, and the angle of the backrest 9 relative to the seat basin 8 changes accordingly.
The adjusting principle of the seat angle adjusting lock is as follows:
the seat backrest angle adjusting lock, the seat basin and the backrest form a triangle, and the triangle is changed by adjusting the length of the locking device, so that the backrest assembly is driven to rotate around the rotating shaft to realize the backrest angle adjusting function. The locking screw sleeve is internally tapped with threads, and when the locking screw sleeve is unlocked, the compression spring expands, the locking screw sleeve and the locking shaft move relatively, and the length of the locking device changes accordingly. When the locking device is locked, the groove is formed in the outer cylinder wall of the locking threaded sleeve, so that the clamping groove of the inserting piece can be locked when the steel cable component is locked, and the length of the locking device is not changed any more. When the angle of the backrest is reduced, the power source for relative movement of the locking screw sleeve and the locking shaft is the relaxation of the compression spring; when the backrest is enlarged, a passenger leans against the backrest to provide a power source, the compression spring is forced to be compressed, and the locking screw sleeve and the locking shaft move relatively.
Claims (8)
1. A seat backrest angle adjusting lock comprises a sleeve (1), a rotary lock frame (2), an inserting piece (3) and a locking shaft (5), wherein one end of the sleeve (1) is connected with the rotary lock frame (2), the other end of the sleeve enables the locking shaft (5) to be inserted into the rotary lock frame (2),
locking axle (5) with rotatory lock frame (2) adopt the ball screw structure, make rotatory lock frame (2) rotary motion turns into locking axle (5) linear motion, rotatory lock frame (2) still include locking swivel nut (202), shell body (201) and flat head staff (206) set up first draw-in groove (202A) on locking swivel nut (202), inserted sheet (3) are "U" shape structure, and one end is connected with flat head staff (206) with shell body (201), and the other end and first draw-in groove (202A) looks adaptation are under the effect of external force inserted sheet (3) and the one end of shell body (201) rotate around flat head staff (206), and the other end inserts first draw-in groove (202A) makes its locking, breaks away from first draw-in groove (202A) unblock.
2. The seat back angle adjustment lock according to claim 1, characterized in that the rotary lock frame (2) further comprises a flat needle thrust bearing (203), one end of the lock shaft (5) is fixedly connected with the seat back, and the other end of the lock shaft is inserted into the rotary lock frame (2) and connected with the flat needle thrust bearing (203), so that the flat needle thrust bearing (203) drives the lock shaft (5) to move axially.
3. The seat back angle adjusting lock according to claim 1, characterized in that the adjusting lock further comprises a compression spring (6), the compression spring (6) is arranged between the sleeve (1) and the locking shaft (5), one end of the compression spring is connected with the rotary lock frame (2), the other end of the compression spring is connected with the locking shaft (5) to provide a power source for extending the locking shaft (5), and the back angle is inclined forward relative to the seat surface to realize the reduction of the back angle; the seat back reclines with the occupant leaning against the backrest to provide power, the compression spring (6) is compressed, the overall length of the locking device is shortened, and the backrest angle is increased.
4. The seat back angle adjusting lock of claim 1, characterized in that, the adjusting lock further comprises a steel cable assembly (7), one end of the steel cable assembly (7) is connected with the seat pan, the other end is connected with the inserting piece (3), pulling the steel cable assembly (7) makes the inserting piece (3) rotate around the flat head small shaft (206), so as to provide an external force for locking or unlocking the inserting piece (3).
5. A seat back angle adjustment lock according to claim 4, characterized in that it further comprises a tension spring (4), said tension spring (4) being connected at one end to said insert (3) and at the other end to said cable assembly (7) for providing a locking return force to said insert (3).
6. A seat back angle adjustment lock according to claim 2, characterized in that the swivel lock frame (2) further comprises a shim (204) connected with the flat thrust needle bearing (203).
7. A seat back angle adjustment lock according to claim 6, characterized in that the swivel lock frame (2) further comprises a circlip for aperture (205).
8. The seat back angle adjustment lock of claim 1, characterized in that the locking screw sleeve (202) is threaded in its inner bore and is screw-connected to the locking shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021920883.5U CN212500021U (en) | 2020-09-04 | 2020-09-04 | Seat back angle adjusting lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021920883.5U CN212500021U (en) | 2020-09-04 | 2020-09-04 | Seat back angle adjusting lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212500021U true CN212500021U (en) | 2021-02-09 |
Family
ID=74385506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021920883.5U Active CN212500021U (en) | 2020-09-04 | 2020-09-04 | Seat back angle adjusting lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212500021U (en) |
-
2020
- 2020-09-04 CN CN202021920883.5U patent/CN212500021U/en active Active
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