CN106510264B - Seat, seat angle adjuster and locking cam thereof - Google Patents
Seat, seat angle adjuster and locking cam thereof Download PDFInfo
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- CN106510264B CN106510264B CN201611200176.7A CN201611200176A CN106510264B CN 106510264 B CN106510264 B CN 106510264B CN 201611200176 A CN201611200176 A CN 201611200176A CN 106510264 B CN106510264 B CN 106510264B
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- locking
- seat
- cam
- locking surface
- locking cam
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The invention discloses a seat, a seat angle adjuster and a locking cam thereof, wherein the locking cam is provided with a locking surface, the locking surface comprises a first area and a second area, the locking angle of the locking surface of the first area is larger than that of the locking surface of the second area, and the second area is positioned at the rear side of the first area along the unlocking direction. Through the optimal design to locking cam structure, can reduce the unblock risk when reducing the handle angle fluctuation of seat angle modulation ware, improve reliability and the adaptability of seat angle modulation ware.
Description
Technical Field
The invention relates to the technical field of seat angle adjustment, in particular to a seat angle adjuster and a locking cam thereof; the invention also relates to a seat with the seat angle adjuster.
Background
Referring to fig. 1, fig. 1 is an exploded view of a conventional seat recliner.
Currently, a commonly used seat recliner is a ratchet slider type structure, and the seat recliner specifically includes a ratchet 32, an unlocking cam 33, a slider 34, a locking cam 35, a center shaft 36, a return spring 37, and a chute plate 38. Typically, the ratchet wheel 32 is fixedly connected to the seat back, the chute plate 38 is fixedly connected to the seat base, and the ratchet wheel 32 can rotate relative to the chute plate 38 to adjust the angle between the seat back and the seat base.
The unlocking cam 33, the locking cam 35 and the return spring 37 all have a central hole for the central shaft 36 to penetrate, and can rotate under the drive of the central shaft 36, the locking cam 35 and the sliding block 34 are located on the same plane, the locking cam 35 is located in a middle groove of the sliding groove plate 38, the sliding block 34 is located in a sliding groove at the outer end of the sliding groove plate 38, and the sliding block 34 can only slide in the sliding groove in the radial direction.
When the seat angle adjuster is unlocked, a torque is applied to the central shaft 36 by virtue of the handle, the return spring 37 is compressed, the central shaft 36 rotates simultaneously, the unlocking cam 33 rotates along with the rotation of the central shaft, the sliding block 34 is driven to translate towards the central shaft 36, so that the ratchet teeth of the sliding block 34 are separated from the ratchet teeth of the ratchet wheel 32, and at the moment, the ratchet wheel 32 can rotate freely only by applying the torque to the ratchet wheel 32, so that the angles of a seat and a chair back can be adjusted.
When the seat angle adjuster is locked, the handle is released, the return spring 37 is restored to the original state under the action of no external force, a reverse (relative to the direction during unlocking) moment is applied to the central shaft 36, the locking cam 35 rotates reversely along with the reverse moment, and the sliding block 34 is pushed to move away from the central shaft 36 until the ratchet teeth of the sliding block 34 are meshed with the ratchet teeth of the ratchet wheel 32.
The seat angle adjuster has the following problems in application: the angle fluctuation of the handle and the locking reliability cannot be considered, or the angle fluctuation of the handle is large, so that the handle is tilted up and down to influence the appearance, or the locking cam 35 is easy to rotate towards the unlocking direction when the chair back is stressed, and the phenomenon of sliding teeth occurs.
In view of this, how to optimally design the structure of the seat recliner to reduce the unlocking risk while reducing the fluctuation of the handle angle is a technical problem that the person skilled in the art needs to solve at present.
Disclosure of Invention
The invention aims to provide a seat angle adjuster and a locking cam thereof, and through the optimization design of the locking cam structure, unlocking risks can be reduced while handle angle fluctuation of the seat angle adjuster is reduced, and reliability and adaptability of the seat angle adjuster are improved. Another object of the present invention is to provide a seat comprising the seat recliner as described above.
In order to solve the technical problems, the invention provides a locking cam of a seat angle adjuster, which is provided with a locking surface, wherein the locking surface comprises a first area and a second area, the locking angle of the locking surface of the first area is larger than that of the locking surface of the second area, and the second area is positioned at the rear side of the first area along the unlocking direction.
The locking cam of the seat angle adjuster provided by the invention has the advantages that the locking surface of the locking cam is optimally designed, and in particular, the locking surface of the locking cam is divided into a first area and a second area, wherein the locking angle of the locking surface of the first area is larger than that of the locking surface of the second area, and the locking cam is configured in such a way that the second area is positioned at the rear side of the first area along the unlocking direction; after the design, when the seat angle adjuster is in a locking state, a first area of a locking surface of the locking cam is matched with a sliding block self-locking surface of the seat angle adjuster, and because the locking angle in the first area is larger, the handle angle is not very sensitive to the error angle, so that the stirring of the handle angle is reduced, at the moment, if the locking cam rotates to an unlocking direction due to the stress of a chair back, a second area of the locking cam is subjected to the thrust action of the sliding block, and the locking angle in the second area is smaller, correspondingly, the thrust of the sliding block to the locking cam is smaller, so that the sliding tooth phenomenon is not easy to occur, and the unlocking risk is reduced; therefore, the structural design of the locking cam can reduce the fluctuation of the handle angle of the seat angle adjuster, simultaneously reduce unlocking risk and improve the reliability and adaptability of the seat angle adjuster.
Optionally, in the first region, a locking angle of the locking surface gradually increases along an unlocking direction.
Optionally, in the second region, a locking angle of the locking surface also gradually increases in an unlocking direction.
Optionally, the angular range of the first region is smaller than the angular range of the second region.
The invention also provides a seat angle adjuster which comprises a ratchet wheel, a sliding block and a locking cam, wherein in a locking state, a locking surface of the locking cam is in contact with a self-locking surface of the sliding block so as to enable the sliding block to be meshed with the ratchet wheel; the locking cam is any one of the locking cams, and the self-locking surface of the sliding block is matched with the locking surface of the locking cam.
The locking cam has the technical effects, so that the seat angle adjuster comprising the locking cam also has corresponding technical effects and is not repeated.
Optionally, the locking surface and the self-locking surface are provided with grooves and protrusions that are matched with each other, and are configured to: when the locking cam rotates in the unlocking direction from the locking state position, the convex part can be clamped in the groove.
Optionally, the groove is disposed on the locking surface, the protrusion is formed at a rear boundary of the self-locking surface, and in the locked state, the groove is disposed at a rear side of the protrusion.
Optionally, the groove is disposed on the self-locking surface, the protrusion is formed at a rear boundary of the locking surface, and in the locked state, the groove is disposed on a front side of the protrusion.
Optionally, the grooves and the protrusions that cooperate with each other are specifically two groups, the locking surface has a first groove, a first protrusion that cooperates with the first groove is formed at the rear boundary of the self-locking surface, the self-locking surface has a second groove, and a second protrusion that cooperates with the second groove is formed at the rear boundary of the locking surface.
The invention also provides a seat, which comprises a hinged seat and a chair back and a seat angle adjuster arranged between the seat and the chair back, wherein the seat angle adjuster adopts any one of the seat angle adjusters.
Because the seat angle adjuster has the technical effects, the seat with the seat angle adjuster has the same technical effects and is not repeated.
Drawings
FIG. 1 is an exploded view of a conventional seat recliner;
FIG. 2 is a schematic view of the configuration of the slider and locking cam in the locked state;
FIG. 3 is a schematic diagram of the seat recliner locking mechanism;
FIG. 4 is a schematic view of a locking cam in an embodiment;
FIG. 5 is an enlarged view of a portion of the locking cam of FIG. 4 at the locking surface thereof;
fig. 6 is a schematic diagram of a locking principle of the seat recliner provided by the present invention;
FIG. 7 is a schematic view of a slider and a locking cam in a locked state according to an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of the portion A of FIG. 7;
FIG. 9 is a schematic view showing the engagement of the recess and the protrusion after the locking cam of FIG. 7 is rotated in the unlocking direction;
FIG. 10 is a schematic view of a slider and a locking cam in a locked state according to another embodiment of the present invention;
FIG. 11 is a schematic view showing the engagement of the recess and the protrusion after the locking cam of FIG. 10 is rotated in the unlocking direction;
fig. 12 is a schematic view of a structure of a slider and a locking cam in a locked state according to another embodiment of the present invention.
Reference numerals illustrate:
the seat angle adjuster 30, the sheath 31, the ratchet 32, the unlocking cam 33, the sliding block 34, the locking cam 35, the central shaft 36, the return spring 37 and the chute plate 38;
a first region 351, a second region 352;
grooves 40, 40', first groove 40a, second groove 40b, protrusions 50, 50', first protrusion 50a, second protrusion 50b.
Detailed Description
Aiming at the problem that the angle fluctuation of the handle and the locking reliability cannot be considered in the prior art, a great deal of research work is carried out. Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of the cooperation of the slider and the locking cam in the locked state, and fig. 3 is a schematic diagram of the locking principle of the seat recliner; the inclined surface in fig. 3 corresponds to the locking surface of the locking cam 35, and the square on the inclined surface corresponds to the slider 34.
The locking process of the seat recliner is understood to be a process of converting the locking face angle of the locking cam 35 (the angle of the entire locking face with respect to the center of the locking cam) into a distance of movement of the slider 34 radially outward. The design of the locking surface of the locking cam 35 is a fixed design, that is, the locking angles of the locking surface are consistent, that is, the distance that the sliding block 34 moves radially outwards is constant when the locking cam 35 rotates for a certain angle.
Referring to fig. 3, the locking angle of the locking surface is a fixed value, that is, the inclination angle α of each point on the inclined surface is a fixed value.
When α is smaller, a larger angle of the locking surface is required to obtain a certain radial movement distance H of the sliding blocks, and due to factors such as machining errors, heat treatment deformation and the like of each sliding block 34, the value of the movement distance of each sliding block 34 fluctuates, and when the sliding blocks 34 move by the same distance, the difference of the angle of the locking surface required is larger, and finally, the angle fluctuation of the handle is large, so that in order to reduce the angle fluctuation of the handle, the locking angle of the locking surface of the locking cam 35 is larger and better.
When α is large, since the larger the downward pressure F of the slider 34, the larger the α value, the larger the rearward component force F0 of the lock cam 35 by the lock surface, F0 being the force urging the lock cam 35 to rotate in the unlock direction, that is, the larger F0, the easier the unlock, the smaller the lock angle of the lock surface of the lock cam 35 should be in order to improve the lock reliability.
From the above analysis, it was found that the control of the handle fluctuation and the locking reliability are contradictory to the size requirement of the locking angle of the locking cam 35.
On the basis of the above research findings, a technical solution for solving the above technical problems is provided herein, and the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
For ease of understanding and description, the following description is provided in conjunction with the seat recliner and its locking cam, and the advantageous portions will not be repeated.
The seat angle adjuster comprises a ratchet wheel, a sliding block and a locking cam, wherein in a locking state, a locking surface of the locking cam is in contact with a self-locking surface of the sliding block so as to enable the sliding block to be meshed with the ratchet wheel.
Referring to fig. 4 and 5, fig. 4 is a schematic structural view of a locking cam according to an embodiment; fig. 5 is a partial enlarged view of the locking cam of fig. 4 at the locking surface.
In this embodiment, the locking surface of the locking cam 35 includes a first region 351 and a second region 352, wherein the locking angle of the locking surface of the first region 351 is larger than the locking angle of the locking surface of the second region 352, and the second region 352 is located at the rear side of the first region 351 in the unlocking direction. In the orientation shown in fig. 4, the unlocking direction is clockwise.
It should be understood that the azimuth term is defined based on the unlocking direction, and the azimuth terms before and after the following are defined based on the unlocking direction, and it should be understood that the use of the azimuth terms should not limit the scope of protection claimed in the present application.
Fig. 6 is a schematic diagram of a locking principle of the seat recliner provided by the present invention.
After the locking surface of the locking cam 35 is designed as above, when the seat angle adjuster is in a locking state, the first area 351 of the locking surface of the locking cam 35 is matched with the self-locking surface of the sliding block 34 of the seat angle adjuster, because the locking angle in the first area 351 is larger, the handle angle is not very sensitive to the error angle, and the handle angle is beneficial to reducing the stirring, at the moment, if the locking cam 35 rotates to the unlocking direction due to the stress of the seat back, the second area 352 of the locking cam 35 mainly receives the thrust action of the sliding block 34, and the locking angle in the second area 352 is smaller, and correspondingly, the thrust of the sliding block 34 to the locking cam 352 is smaller, so that the sliding tooth phenomenon is not easy to occur, and the unlocking risk is reduced; therefore, the structural design of the locking cam 35 can reduce the fluctuation of the handle angle of the seat angle adjuster, reduce unlocking risk and improve the reliability and adaptability of the seat angle adjuster.
In a specific scheme, in the first area 351, the locking angle of the locking surface of the locking cam 35 gradually increases along the unlocking direction, so that in the locked state, the sensitivity of the handle angle to the error angle can be further reduced, and the fluctuation range of the handle angle is further reduced.
In a specific scheme, in the second area 352, the locking angle of the locking surface of the locking cam 35 gradually increases along the unlocking direction, so that when the locking cam 35 rotates in the unlocking direction, the locking angle can be rapidly reduced, so that the thrust of the sliding block 34 to the locking cam 35 is rapidly reduced, and the sliding tooth risk is further reduced.
It should be appreciated that the locking surface locking angles in both the first region 351 and the second region 352 may also be designed to increase in the unlocking direction as a preferred option to further improve the reliability and adaptability of the seat recliner.
In a specific embodiment, the angular range of the first region 351 is smaller than the angular range of the second region 352.
The specific arrangement of the locking surface of the locking cam 35 will be exemplarily described below with a specific example, the angular range of the first region 351 may be around 7 °, the angular range of the second region 352 may be around 9 °, and the locking angle of the entire locking surface of the locking cam 35 may be gradually changed from 1 ° to 7 ° or more.
It should be noted that the locking surface of the locking cam 35 and the self-locking surface of the slider 34 are mutually matched, and after the locking surface of the locking cam 35 is modified as described above, the self-locking surface of the slider 34 should be correspondingly adjusted to match with the above.
It has also been found that the cause of the tooth slipping phenomenon is: when the back of the chair is subjected to an external force loaded forwards or backwards, the external force can be loaded on the ratchet wheel, and the ratchet wheel can transmit the external force to the sliding block 34 through tooth transmission, so that the sliding block 34 has a continuous rotation trend. In objective terms, a gap exists between the side wall of the slider 34 and the side wall of the groove of the runner plate, so that the slider 34 can swing continuously. The swing of the sliding block 34 toggles the locking cam 35 to rotate in the unlocking direction, tiny fluctuation is generated each time the sliding block is loaded by external force, and although the locking cam 35 rotates in the locking direction due to the reset spring, the sliding block cannot resist the rotation in the unlocking direction due to the tiny toggle effect, and the sliding tooth phenomenon that the locking cam 35 rotates in the unlocking direction can occur after long-term accumulation.
Further improvements are made herein to the slider 34 and the locking cam 35 in order to better reduce the risk of tooth slippage.
Referring to fig. 7 to fig. 9, fig. 7 is a schematic structural diagram of the slider and the locking cam in a locked state according to an embodiment of the present invention, fig. 8 is a partially enlarged view of a portion a in fig. 7, and fig. 9 is a schematic structural diagram of the locking cam in fig. 7 in which the groove and the protrusion are engaged after rotating in an unlocking direction.
In this embodiment, the locking surface of the locking cam 35 is provided with the groove 40, and the self-locking surface of the slider 34 is provided with the protrusion 50, wherein the protrusion 50 is formed at the rear boundary of the self-locking surface of the slider 34, that is, the left boundary of the self-locking surface of the slider 34 in fig. 8, and the arrow at the locking cam 35 in fig. 8 indicates the tendency of the locking cam 35 to rotate in the unlocking direction when the slider 34 is pushed.
Obviously, in order to allow the protrusion 50 to be caught in the groove 40 when the lock cam 35 is rotated in the unlocking direction, in the locked state, the groove 40 is located at the rear side of the protrusion 50 in the orientation shown in fig. 6, that is, the groove 40 is located at the left side of the protrusion 50; that is, when the slider 34 and the lock cam 35 are in the locked state, the slider 34 is located on the front side of the rear boundary of the lock surface of the lock cam 35 from the rear boundary of the lock surface.
In practical application, the ratchet passes through the tooth transmission and transmits the external force that the back of the chair received to slider 34, slider 34 constantly swings and stir locking cam 35 when rotatory to the unblock direction, after locking cam 35 rotates certain angle to the unblock direction, convex part 50 on the slider 34 can fall into locking cam 35's recess 40, after convex part 50 card is put at recess 40, slider 34's profile can hinder locking cam 35's the back of giving off, locking cam 35 has been avoided further to the unblock direction rotation, and through the extrusion force between slider 34 and the locking cam 35, can ensure the card between convex part 50 and the recess 40, thereby can prevent seat angle modulation ware unblock smooth tooth, seat angle modulation ware's reliability has been improved.
It should be noted that, the specific positions of the groove 40 and the protrusion 50 are set, so that after the locking cam 35 rotates for a small angle in the unlocking direction, the protrusion 50 can cooperate with the groove 40 to prevent the locking cam 35 from rotating further in the unlocking direction, thus the stability and reliability of the locking state of the seat angle adjuster can be well ensured, and the user experience is improved.
In a specific application, the protrusion 50 provided on the slider 34 may be formed by forming a certain angle between the rear boundary of the self-locking surface of the slider 34 and the contour of the slider 34 adjacent thereto, which is simple and convenient.
Referring to fig. 10 and 11, fig. 10 is a schematic structural view of a slider and a locking cam in a locked state according to another embodiment of the present invention, and fig. 11 is a schematic structural view of the locking cam in fig. 10 after rotating in an unlocking direction, in which a groove is matched with a protrusion.
In this embodiment, the groove 40' is provided on the self-locking surface of the slider 34, and the protrusion 50' is provided on the lock cam 35, specifically, the protrusion 50' is formed at the rear boundary of the lock surface of the lock cam 35, that is, at the left boundary of the lock surface of the lock cam 35 in fig. 10.
Obviously, in order to allow the protrusion 50 'to be caught in the groove 40' when the locking cam 35 is rotated in the unlocking direction, the groove 40 'is located at the front side of the protrusion 50' in the locked state, in the orientation shown in fig. 10, that is, the groove 40 'is located at the right side of the protrusion 50'; that is, when the slider 34 and the lock cam 35 are in the locked state, the slider 34 is located on the front side of the rear boundary of the lock surface of the lock cam 35 from the rear boundary of the lock surface.
In practical application, the ratchet passes through the tooth transmission and transmits the external force that the back of the chair received to slider 34, slider 34 constantly swings and stir locking cam 35 when rotatory to the unblock direction, after locking cam 35 rotates certain angle to the unblock direction, the convex part 50' that sets up on the locking cam 35 can fall into the recess 40' that slider 34 above-mentioned set up, after convex part 50' card was put at recess 40', convex part 50' can hinder the back of locking cam 35 by the barrier of recess 40', avoided locking cam 35 to rotate to the unblock direction further, and through the extrusion force between slider 34 and the locking cam 35, can ensure the block between convex part 50' and the recess 40', thereby can prevent seat angle modulation ware unblock smooth tooth, seat angle modulation ware's reliability has been improved.
In the preferred solution, the groove 40' is disposed near the rear boundary of the self-locking surface of the slider 34, so that in the locked state, the groove 40' of the slider 34 is closer to the protrusion 50' of the locking cam 35, so that after the locking cam 35 rotates a small angle in the unlocking direction, the protrusion 50' of the locking cam can be clamped in the groove 40' of the slider 34 to prevent the locking cam 35 from rotating further in the unlocking direction, thereby ensuring the stability and reliability of the locking state of the seat angle adjuster, and improving the user experience.
Of course, in the actual setting, in the locked state, the positional relationship between the recess 40 'and the protrusion 50' may be set according to the actual requirement.
In a specific application, the convex portion 50' provided on the locking cam 35 may be formed by forming a certain angle between the rear boundary of the locking surface of the locking cam 35 and the contour of the locking cam 35 adjacent thereto, which is simple and convenient.
Referring to fig. 12, fig. 12 is a schematic view of a structure of a slider and a locking cam in a locked state according to another embodiment of the invention.
In this embodiment, two sets of mutually cooperating grooves and protrusions are provided on the locking cam 35 and the slider 34.
Wherein the locking surface of the locking cam 35 has a first groove 40a, the slider 34 is provided with a first protrusion 50a matching with the first groove 40a, specifically, the first protrusion 50a is formed at the rear boundary of the self-locking surface of the slider 34, that is, the left boundary of the self-locking surface of the slider 34 in fig. 10; the self-locking surface of the slider 34 has a second groove 40b, and the locking cam is provided with a second protrusion 50b that mates with the second groove 40b, specifically, the second protrusion 50b is formed at the rear boundary of the locking surface of the locking cam 35, that is, at the left boundary of the locking surface of the locking cam 35 in fig. 12.
Obviously, in order to allow the first protrusion 50a to be caught in the first groove 50b when the lock cam 35 rotates in the unlocking direction, in the locked state, the first groove 50b is located at the rear side of the first protrusion 50a, and the first protrusion 50a is formed at the rear boundary of the slider 34 from the lock surface, so that in the locked state, the rear boundary of the slider 34 from the lock surface is located significantly at the front side of the rear boundary of the lock surface of the lock cam 35.
In practical application, the ratchet transmits the external force received by the chair back to the slide block 34 through the tooth transmission, when the slide block 34 continuously swings to toggle the locking cam 35 to rotate in the unlocking direction, after the locking cam 35 rotates in the unlocking direction by a certain angle, the first convex part 50a on the slide block 34 falls into the first groove 40a on the locking cam 35, and the back-off of the locking cam 35 is blocked through the locking cooperation of the first convex part 50a and the first groove 40 a.
In this process, if the first protrusion 50a is separated from the first groove 40a due to excessive external force or other unexpected situations, and the two are not matched, after the locking cam 35 continues to rotate for a certain angle in the unlocking direction, the second protrusion 50b on the locking cam 35 will fall into the second groove 40b on the slider 34, and the second protrusion 50b is blocked from yielding by the locking cooperation with the second groove 40 b.
As above, the cooperation design of the two sets of convex parts and the grooves is equivalent to providing double insurance for the back-off of the locking cam 35, so that the stability and reliability of the locking state of the seat angle adjuster can be further improved, and the user experience is enhanced.
In a preferred embodiment, the second groove 40b provided on the slider 34 is provided near the rear boundary of the self-locking surface of the slider 34 to prevent the locking cam 35 from rotating by a large angle in the unlocking direction.
The invention also provides a seat, which comprises a seat back, a seat base and a seat angle adjuster, wherein the seat angle adjuster is the seat angle adjuster.
The seat angle adjuster has the same technical effects as those of the seat comprising the seat angle adjuster, and the description thereof is omitted.
The seat, the seat angle adjuster and the locking cam provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (9)
1. A lock cam of a seat recliner, the lock cam having a lock surface, characterized in that the lock surface includes a first region and a second region, wherein a lock angle of the lock surface of the first region is larger than a lock angle of the lock surface of the second region, and the second region is located at a rear side of the first region in an unlock direction;
in the first region, the locking angle of the locking surface increases gradually in the unlocking direction.
2. The locking cam of claim 1, wherein in the second region, a locking angle of the locking surface increases gradually in an unlocking direction.
3. The locking cam of claim 2, wherein the angular extent of the first region is less than the angular extent of the second region.
4. The seat angle adjuster comprises a ratchet wheel, a sliding block and a locking cam, wherein in a locking state, a locking surface of the locking cam is in contact with a self-locking surface of the sliding block so as to enable the sliding block to be meshed with the ratchet wheel; the locking cam is characterized in that the locking cam is any one of claims 1-3, and the self-locking surface of the sliding block is matched with the locking surface of the locking cam.
5. The seat recliner as set forth in claim 4 wherein said locking surface and said self-locking surface are provided with cooperating recesses and protrusions and are configured to: when the locking cam rotates in the unlocking direction from the locking state position, the convex part can be clamped in the groove.
6. The seat recliner as set forth in claim 5 wherein said recess is provided in said locking surface and said projection is formed at a rear boundary of said self-locking surface and said recess is located on a rear side of said projection in a locked state.
7. The seat recliner as set forth in claim 5 wherein said recess is provided in said self-locking surface, said projection is formed at a rear boundary of said locking surface, and said recess is located on a front side of said projection in a locked state.
8. The seat recliner according to claim 5 wherein the grooves and the protrusions are in two sets, the locking surface having a first groove, a first protrusion is formed at a rear boundary of the self-locking surface that mates with the first groove, the self-locking surface having a second groove, and a second protrusion is formed at a rear boundary of the locking surface that mates with the second groove.
9. A seat comprising a hinged seat and back and a seat recliner interposed between the seat and back, wherein the seat recliner is a seat recliner as claimed in any one of claims 4 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200176.7A CN106510264B (en) | 2016-12-22 | 2016-12-22 | Seat, seat angle adjuster and locking cam thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200176.7A CN106510264B (en) | 2016-12-22 | 2016-12-22 | Seat, seat angle adjuster and locking cam thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106510264A CN106510264A (en) | 2017-03-22 |
| CN106510264B true CN106510264B (en) | 2023-08-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611200176.7A Active CN106510264B (en) | 2016-12-22 | 2016-12-22 | Seat, seat angle adjuster and locking cam thereof |
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| Country | Link |
|---|---|
| CN (1) | CN106510264B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017110492A1 (en) * | 2017-05-15 | 2018-11-15 | Bock 1 Gmbh & Co. Kg | Armrest, especially for an office chair |
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| CN101791954A (en) * | 2010-03-24 | 2010-08-04 | 上海延锋江森座椅有限公司 | Automobile seat backrest adjuster |
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| CN102151022A (en) * | 2011-01-28 | 2011-08-17 | 湖北中航精机科技股份有限公司 | Seat angle adjusting device and seat |
| CN202541361U (en) * | 2012-04-24 | 2012-11-21 | 上海延锋江森座椅有限公司 | Automobile seat angle regulator with improved structure |
| CN103171463A (en) * | 2013-02-26 | 2013-06-26 | 宁波双林汽车部件股份有限公司 | Unlocking and locking device resistant against inverse motion impact |
| CN103465879A (en) * | 2013-09-06 | 2013-12-25 | 三一汽车制造有限公司 | Locking mechanism and construction machinery |
| CN103507668A (en) * | 2012-06-20 | 2014-01-15 | 江苏力乐汽车部件股份有限公司 | Internal gearing disk-type seat recliner core device |
| CN103603882A (en) * | 2013-11-29 | 2014-02-26 | 长城汽车股份有限公司 | Vehicle synchronizer |
| CN103661018A (en) * | 2012-09-12 | 2014-03-26 | 伊思灵豪森有限责任公司 | Device for locking and unlocking a belt height adjustment device and vehicle seat |
| CN203637610U (en) * | 2013-10-16 | 2014-06-11 | 上海延锋江森座椅有限公司 | Seat manual angle adjuster |
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| CN204064198U (en) * | 2014-08-07 | 2014-12-31 | 奇瑞汽车股份有限公司 | A kind of automobile oil filler cap cubing |
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| CN104428187A (en) * | 2012-06-01 | 2015-03-18 | 雷诺股份公司 | Device for controlling the course of a vehicle |
| CN104527485A (en) * | 2015-01-09 | 2015-04-22 | 安徽江淮汽车股份有限公司 | Automobile and ashtray assembly thereof |
| CN204367956U (en) * | 2015-01-09 | 2015-06-03 | 安徽江淮汽车股份有限公司 | A kind of automobile and ashtray component thereof |
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| CN204870621U (en) * | 2015-08-11 | 2015-12-16 | 湖北伟士通汽车零件有限公司 | Car seat angle modulation utensils dish ratchet adjustment mechanism |
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| CN205395839U (en) * | 2016-03-16 | 2016-07-27 | 珠海阳光儿童用品有限公司 | ISOFIX interface arrangement and children's safety seat of children's safety seat |
| CN105923036A (en) * | 2016-06-06 | 2016-09-07 | 好孩子儿童用品有限公司 | Child chart |
| CN105952140A (en) * | 2016-05-18 | 2016-09-21 | 安阳工学院 | Cast in situ concrete tool type steel frame wood plastic template system and construction method thereof |
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