CN201296189Y

CN201296189Y - Seat angle regulator

Info

Publication number: CN201296189Y
Application number: CNU2008201542958U
Authority: CN
Inventors: 沈灿荣; 张立炜; 陈文君
Original assignee: SHANGHAI JIAOYUN AUTOCAR ACCURATE STAMPING PIECE CO Ltd
Current assignee: SHANGHAI JIAOYUN AUTOCAR ACCURATE STAMPING PIECE CO Ltd
Priority date: 2008-10-21
Filing date: 2008-10-21
Publication date: 2009-08-26
Anticipated expiration: 2018-10-21

Abstract

The utility model discloses a seat angle regulator which comprises an inner dental plate, an outer dental plate, an eccentric wedge, a drive shaft and a lockup spring, wherein, the inner dental plate is provided with a central boss; the outer dental plate is eccentrically engaged with the inner dental plate and provided with a central flange, a central hole and an inner tooth socket; the inner tooth socket is positioned at the outer periphery of the central flange; the eccentric wedge is rotationally positioned between the central hole of the outer dental plate and the central boss of the inner dental plate; the drive shaft is provided with a first push block and a second push block; the first push block can be in contact with the eccentric wedge and drive the eccentric wedge to rotate; the contact surfaces of the eccentric wedge with the central hole of the outer dental plate and the central boss of the inner dental plate are arc-shaped cylindrical surfaces; the lockup spring is provided with an elastic ring, a bayonet and a stop block; the elastic ring is sleeved on the central flange of the outer dental plate; the bayonet is inserted in the inner tooth socket; and the stop block can be in contact with the second push block of the drive shaft. The utility model is easy to process and manufacture, and can be used more safely and reliably.

Description

Seat angle adjustor

Technical field

The utility model relates to a kind of adjusting angle mechanism that is used for automotive seat, can be installed in backrest and sits between the basin, can regulate the angle of backrest according to passenger's needs.

Background technology

The continuous development of careless auto-industry, the seat that need adapt with it is to satisfy passenger safety and comfortable sitting posture requirement.What the existing automobile seat major part adopted is the gear type recliner, there is certain sideshake in the wheel backlash, cause existing to a certain extent the problem that locking is unreliable and the back of seat free clearance big (preceding-then rock), on new automobile, use this kind seat angle adjustor, can not satisfy safety and traveling comfort requirement.

China utility model patent CN2907393Y discloses a kind of gear-type chair angle stepless regulation structure, it comprises driver train, gear drive and clearance eliminating mechanism, wherein gear drive is engagement epicyclic transmission mechanism in few tooth difference single gear, outer tooth plate is loaded in the internal gear and an eccentric throw is arranged, and the internal tooth of internal gear is meshed with the external tooth of outer tooth plate; Driver train is in order to the driven wheel transmission device; Clearance eliminating mechanism is an eccentric cam mechanism, be installed between outer tooth plate and the internal gear, it comprises an external cam, a cam ring and a spring, under the effect of spring, tiltedly carve the face mutual action for several sections on the interior and exterior cam, can eliminate the gap between the intermeshing inside and outside tooth, utilize friction force simultaneously internal gear and outer tooth plate locking.Yet there is following defective in this structure: one, interior and exterior cam particularly several sections on the external cam tiltedly carve relatively difficulty of face processing; If tiltedly carve the working accuracy out of reach requirement of face on two interior and exterior cam, just be difficult to reach the effect of eliminating inter-lobe clearance, perhaps cause locking unreliable.

The utility model content

The technical problems to be solved in the utility model provides a kind of angle regulator for automobile chair of safe, good reliability.

In order to solve the problems of the technologies described above, the utility model by the following technical solutions: a kind of seat angle adjustor, comprise with lower member: internal gear has central boss; Outer tooth plate is meshed with internal gear prejudicially, and this outer tooth plate has center flange, centre hole and internal spline, and described internal spline is positioned at the periphery of center flange; Eccentric voussoir, turn outside between tooth plate centre hole and the internal gear central boss; Axle drive shaft has first pushing block and second pushing block, and first pushing block can contact and drive eccentric voussoir and rotate with eccentric voussoir; Described eccentric voussoir is the circular arc cylinder with outer tooth plate centre hole, the contacted surface of internal gear central boss; Also comprise a locking spring, it has an elastic collar and bayonet socket, block, and described elastic collar is enclosed within on the outer tooth plate center flange, and described bayonet socket inserts in the described internal spline, and described block can contact with second pushing block of axle drive shaft.

By above disclosed technical scheme as can be known, eccentric voussoir can make the part tooth of inside and outside tooth plate be meshed, and eliminates the back lash between them; When axle drive shaft drives eccentric voussoir and rotates, can promote inside and outside tooth plate and relatively rotate, thereby regulate the back of seat that is connected with inside and outside tooth plate and sit angle between the basin.Unlike the prior art be, the surface of eccentric voussoir is a smooth curved surface in the utility model, be convenient to processing; The utility model also is provided with a locking spring, can pin outer tooth plate under normal circumstances, it can not be rotated, so locking is more safe and reliable.

Preferably, described internal gear is Duoed a tooth than outer tooth plate.

Preferably, also be fixed with a self-lubricating bearing in the described outer tooth plate centre hole.

Preferably, also be provided with a seal ring between described axle drive shaft and the outer tooth plate.

Preferably, described eccentric voussoir has two, arranges that symmetrically the end of eccentric voussoir is provided with a breach, also comprises a lock spring, and the both ends of lock spring are inserted respectively in the described breach and with two eccentric voussoirs and linked together.

Further, described lock spring is positioned at the outside of locking spring, and the locking spring is provided with the through hole that can pass for the both ends of lock spring.

Preferably, described internal gear also is connected with a upper junction plate, and described outer tooth plate also is connected with a lower connecting plate.

Description of drawings

Fig. 1 is the explosive view of the utility model seat angle adjustor.

Fig. 2 is the schematic perspective view of internal gear.

Fig. 3 is the schematic perspective view of outer tooth plate.

Fig. 4 is the outer tooth plate schematic perspective view of observing from Fig. 3 back side

Fig. 5 is the schematic perspective view of locking spring.

Fig. 6 is the schematic perspective view of two eccentric voussoirs.

Fig. 7 is the schematic perspective view of axle drive shaft.

Fig. 8 is the inner structure scheme drawing of the utility model seat angle adjustor at initial condition.

Fig. 9 is the utility model seat angle adjustor inner structure scheme drawing in working order.

Wherein:

1. axle drive shaft 301. lock spring ends

101. first pushing block, 4. locking springs

102. second pushing block, 401. elastic collars

2. seal ring 402. bayonet sockets

3. lock spring 403. through holes

404. block 703. outside faces

5. outer tooth plate 704. end faces

501. centre hole 8. internal gears

502. center flange 801. internal tooths

503. internal spline 802. central boss

504. external tooth 803. mounting holes

6. self-lubricating bearing 9. collars

7. eccentric voussoir 10. upper junction plates

701. breach 11. lower connecting plates

702. inside face

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

As shown in Figure 1, the utility model seat angle adjustor comprises axle drive shaft 1, seal ring 2, lock spring 3, locking spring 4, outer tooth plate 5, self-lubricating bearing 6, eccentric voussoir 7, internal gear 8, collar 9, upper junction plate 10, lower connecting plate 11.

Wherein the structure of internal gear 8 as shown in Figure 2, it has internal tooth 801, a central boss 802 and a mounting hole 803.

The structure of outer tooth plate as shown in Figure 3, it has a centre hole 501, the center flange of outwards protruding 502 and is positioned at the internal spline 503 of the periphery of center flange 502 around centre hole 501, the opposite side of tooth plate 5 (just relative with an internal gear side) is provided with external tooth 504 outside, as shown in Figure 4, external tooth 504 protrudes from board plane.

In conjunction with Fig. 1-Fig. 4, aforementioned external teeth 504 is lacked a tooth than internal tooth 801, thereby outer tooth plate 5 can only mesh (promptly having only the part tooth to be meshed) prejudicially with internal gear 8.Two eccentric voussoir 7 rotatable being installed between outer tooth plate centre hole 501 and the internal gear central boss 802 are to guarantee outer tooth plate 5 and the internal gear 8 eccentric back lashes of meshing and eliminating between them.In order to improve lubricity, in the tooth plate centre hole 501 self-lubricating bearing 6 is set outside, the centre hole of self-lubricating bearing 6 and outer tooth plate 501 forms a fixed connection by interference fit.

As shown in Figure 6, two eccentric voussoir 7 symmetric arrangement, eccentric voussoir 7 one ends are thicker and the other end is thinner, are provided with a breach 701 at its thicker end, and the inside face 702 of eccentric voussoir 7 is slick and sly arc cylinder, and it contacts with the internal gear central boss; The outside face 703 of eccentric voussoir 7 also is slick and sly arc cylinder, and it contacts with self-lubricating bearing 6, and obviously, the eccentric voussoir of this shape is processed than being easier to.In conjunction with Fig. 1, insert respectively in the breach 701 of two eccentric voussoirs 7 at the both ends 301 of lock spring 3, and two eccentric voussoirs are linked together.The both ends 301 of lock spring 3 have the trend of outwards separating, and they apply the tension force that outwards separates to two eccentric voussoirs 7, and this tension force helps eliminating the back lash between outer tooth plate 5 and the internal gear 8.

The structure of locking spring 4 as shown in Figure 5, it has an elastic collar 401, two bayonet sockets 402 and two blocks 404.Also have two through holes 403 in addition, can pass for the both ends 301 of lock spring 3.Elastic collar 401 is enclosed within on the center flange 502 of outer tooth plate, and two bayonet sockets 402 can just in time insert in two internal splines 503.

Axle drive shaft 1 passes seal ring 2, lock spring 3, locking spring 4, outer tooth plate 5, self-lubricating bearing 6 and internal gear 8 successively, and forms normal-running fiies with the mounting hole 803 of internal gear 8, and assembling is finished with after collar 9 is captiveed joint in the end of axle drive shaft 1.The structure of axle drive shaft 1 as shown in Figure 7, it has one first pushing block 101 and two second pushing blocks 102, first pushing block 101 inserts in the self-lubricating bearings 6 between the two eccentric voussoirs 7, when axle drive shaft 1 rotated, first pushing block 101 can contact and drive two eccentric voussoirs and rotate with the end face 704 of an eccentric voussoir 7.102 of second pushing blocks can contact with two blocks 404 on the locking spring 4.

For the ease of installing, internal gear 8 also is connected with a upper junction plate 10, and outer tooth plate 5 also is connected with a lower connecting plate 11.Upper junction plate 10 can be captiveed joint with back of seat, and lower connecting plate 11 can be sat basin with seat and captives joint.

Below in conjunction with Fig. 8, Fig. 9 principle of work of the present utility model is described.

As shown in Figure 8, in order to simplify lines, locking spring among the figure one side of something that only drawn, under initial condition, two eccentric voussoirs 7 are positioned at a side of self-lubricating bearing 6, make outer tooth plate 5 and internal gear 8 partial tooth engagements, and first pushing block 101 of axle drive shaft 1 is between two eccentric voussoirs 7, bayonet socket 402 on the locking spring inserts in the internal spline 503, forms locking.

As shown in Figure 9, when axle drive shaft 1 rotated, second pushing block contacted with block 404 on the locking spring 4, and block 404 is exerted pressure, and makes elastic collar 401 that elastic deformations take place, and two bayonet sockets 402 are deviate from from internal spline 503, the releasing locking.First pushing block 101 contacts with eccentric voussoir 7 and drives two eccentric voussoirs 7 and rotates simultaneously, eccentric voussoir 7 will drive outer tooth plate when rotating and rotate with respect to internal gear, because internal gear Duo a tooth than outer tooth plate, therefore eccentric voussoir 7 revolutions moving enclose, and outer tooth plate rotates a tooth relative to internal gear.By relatively rotating between outer tooth plate and the internal gear, the drive seat is sat the rotation between basin and the backrest, and the angle of back of seat is changed.

Axle drive shaft 1 can also can be driven by hand gear by direct motor drive.Though internal gear is Duoed a tooth than outer tooth plate in the present embodiment, also a few tooth how.

Claims

1. seat angle adjustor comprises with lower member:

Internal gear has central boss;

Outer tooth plate is meshed with internal gear prejudicially, and this outer tooth plate has center flange, centre hole and internal spline, and described internal spline is positioned at the periphery of center flange;

Eccentric voussoir, turn outside between tooth plate centre hole and the internal gear central boss;

Axle drive shaft has first pushing block and second pushing block, and first pushing block can contact and drive eccentric voussoir and rotate with eccentric voussoir; It is characterized in that:

Described eccentric voussoir is the circular arc cylinder with outer tooth plate centre hole, the contacted surface of internal gear central boss;

Also comprise a locking spring, it has an elastic collar and bayonet socket, block, and described elastic collar is enclosed within on the outer tooth plate center flange, and described bayonet socket inserts in the described internal spline, and described block can contact with second pushing block of axle drive shaft.

2. seat angle adjustor according to claim 1 is characterized in that: described internal gear is Duoed a tooth than outer tooth plate.

3. seat angle adjustor according to claim 1 is characterized in that: also be fixed with a self-lubricating bearing in the described outer tooth plate centre hole.

4. seat angle adjustor according to claim 1 is characterized in that: also be provided with a seal ring between described axle drive shaft and the outer tooth plate.

5. seat angle adjustor according to claim 1, it is characterized in that: described eccentric voussoir has two, arranges that symmetrically the end of eccentric voussoir is provided with a breach, also comprise a lock spring, the both ends of lock spring are inserted respectively in the described breach and with two eccentric voussoirs and are linked together.

6. seat angle adjustor according to claim 5 is characterized in that: described lock spring is positioned at the outside of locking spring, and the locking spring is provided with the through hole that can pass for the both ends of lock spring.

7. seat angle adjustor according to claim 1 is characterized in that: described internal gear also is connected with a upper junction plate, and described outer tooth plate also is connected with a lower connecting plate.