JPS61247415A - Minute adjustment apparatus of seat recliner for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fine adjustment device for a seat recliner for a vehicle.

(Prior Art) Conventionally, a seat-side bracket and a backrest-side bracket are attached to a shaft so that they can be opened and closed, and a sector gear is attached to either the seat-side bracket or the backrest-side bracket, and a sector gear is attached to either the seat-side bracket or the backrest-side bracket. A seat recliner for personal vehicles that has a lock plate with engaging teeth that mesh with the sector gear attached to either side bracket was developed in U.S. Pat. No. 58-73.
It is described in No. 153 and is publicly known.

(Problems to be Solved by the Invention) The backrest angle of the known device is adjusted by gear teeth formed on the outer periphery of the sector gear, and adjustment at an intermediate position between the gears is impossible. It was impossible.

(Means for solving the problem) Therefore, the present invention connects the seat side bracket l and the backrest side bracket 4 via a shaft 3 so as to be openable and closable, and either the seat side bracket 1 or the backrest side bracket 4 Sector Gear 5 on one side.

In the case where a lock plate 19 having engaging teeth 21 that mesh with the sector gear 5 is attached to the other of the seat side bracket 1 and the backrest side bracket 4, either the seat side bracket 1 or the backrest side bracket 4 is attached. An engagement hole 18 and an engagement hole 16 are provided between one side and the sector gear 5.
are formed, respectively, and the eccentric shaft 14 with an adjustment knob is inserted into the engagement hole 18 and the engagement hole 16, and by rotating the eccentric shaft 14, either the seat side bracket 1 or the backrest side bracket 4 can be adjusted. one side and the sector gear 5
This is a fine adjustment device for a seat recliner for a vehicle that can change the relative position of the seat recliner.

(Structure) An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a seat-side bracket fixed to the seat side of the seat, and the base end of the seat-side bracket l has a forked portion 2 on the distal end side. A formed shaft 3 is provided. Reference numeral 4 denotes a backrest side bracket fixed to the childcare seat, and the base end of the backrest side bracket 4 is fixed to the shaft 3. Although not shown, the backrest side bracket 4 is always urged in the direction of arrow A by a spring.

A sector gear 5 and an auxiliary bracket 6 are attached to the shaft 3 so as to be rotatable in sequence. The sector gear 5 includes a toothless portion 7, a step portion 9 having a slightly smaller diameter than the toothless portion 7, and a tooth portion 8, and a stopper 10 is formed at the boundary between the step portion 9 and the toothless portion 7.

Reference numeral 11 denotes a rivet that secures the auxiliary bracket 6 and the backrest side bracket 4 together via the sector gear 5. The sector gear 5 has a long hole 12 for fine adjustment, and the rivet 11 is inserted into the long hole 12. .

The auxiliary bracket 6 and the backrest side bracket 4 are fixed.

Reference numeral 13 denotes an adjustment knob, and an eccentric portion 15 is provided at the center of the eccentric shaft 14 to which the adjustment knob 13 is fixed, and the eccentric portion 15 is fitted into the engagement hole 16 of the sector gear 5. are fitted into the engagement hole 17 of the auxiliary bracket 6 and the engagement hole 18 of the backrest side bracket 4, respectively. Therefore, when the adjustment knob 13 is rotated, the relative position of the sector gear 5 and the backrest side bracket 4 is finely adjusted in the direction of arrow A or in the opposite direction of arrow A.

Thus, a lock plate 19 is pivotally attached to the seat side bracket 1 by a shaft 20, and an engaging tooth 21 that engages with the tooth portion 8 is formed on the rotation end side of the lock plate 19.

22 is a pin protruding from the lock plate 19, 23 is an operating lever, the operating lever 23 is pivotally attached to the seat side bracket 1 by a shaft 24, and the pin 22 is engaged with the sector gear 5 side of the operating lever 23. An opening 25 is formed. An engaging edge 26 is formed on the sector gear 5 side of the opening 25, and the engaging edge 26 is formed at an upper end 27 with respect to the sector gear 5.
is formed so that it is far away, and the lower end 28 is formed close to it.

Reference numeral 29 denotes a latch for the lock plate 19 that is provided integrally with the operating lever 23 and presses the lock plate 19 against the tooth portion 8 of the sector gear 5. 30 is a spring that always biases the operating lever 23 in the direction of the arrow.

Thus, a cover 31 is rotatably attached to the shaft 3.

The cover 31 has one end 32 bent at a substantially right angle to form a cover portion 33 that covers the stepped portion 9 or toothed portion 8 of the sector gear 5, and a retaining piece 35 is provided on the other end 34 side. Reference numeral 36 denotes a protruding piece provided on one end 32 side, and a spring 38 is provided between the protruding piece 37 of the auxiliary bracket 6 and the cover 31 is brought into contact with the stopper 10 at all times.

A fan-shaped adjustment plate 39 is rotatably attached to the shaft 3 to which the cover 31 is attached. A toothed portion 40 is formed on the outer circumference of the adjustment plate 39, and a toothed portion 42 of a lever 41 is formed on the toothed portion 40.
engage. The adjustment plate 39 is provided with an abutting piece 43 that abuts when the engaging piece 35 of the cover 31 rotates in the direction of arrow A. The adjustment plate 39 is provided with a protrusion 44, and the protrusion 44 has one end 46 and the other end 47 of a spring 45 wound around the shaft 3.
are respectively locked, but one end 46 and the other end 47 have protrusions 44
A cross portion 48 is provided so as to sandwich the.

Reference numeral 49 denotes a ring attached to the shaft 3. A fitting hole 50 is formed at the base end of the ring 49 to fit into the forked portion 2 of the shaft 3. The ring 49 is attached to the shaft 3 (seat side bracket 1), the ring 49 is provided with a protrusion 51 extending in the direction of the protrusion 44, and a protrusion 52 extending toward the adjustment plate 39 is provided on the tip side of the protrusion 51. 52 faces between the cross portion 48 of the spring 45 and one end 46,47. That is, the spring 45 biases the protrusion 44 so that it always faces the protrusion 52.

The lever 41 is pivotally attached to one end of the sector gear 5 by a shaft 53, and is always biased in the direction of arrow A by a spring 54. 55 is one end of the lever 41, and 56 is the other end.

(effect) Next, the action will be described.

(Passenger Seating) In normal use, the seat side bracket 1 and the backrest side bracket 4 are fixed by engagement between the teeth 8 of the sector gear 5 at appropriate positions and the engagement teeth 21 of the lock plate 19. Ru. In this state, when changing the angle of the backrest seat, pull up the operating lever 23 in the direction opposite to the arrow, the lock plate 19 and latch 29 will disengage, and at the same time the pin 22 will come into contact with the engagement edge 26. In contact with the lock plate 19
The engagement tooth 21 is moved in the convex direction of the arrow, the engagement between the engagement tooth 21 and the tooth section 8 is released, the backrest side bracket 4 and the seat side bracket l are made rotatable, and the desired result is achieved. When the angle is adjusted, therefore, when the operating lever 23 is released, the engagement teeth 21 of the lock plate 19 and the tooth portion 8 engage and are locked.

(Memory Set) In the state shown in FIG. 3, the backrest is appropriately tilted backwards. When the contact between the cover portion 33 and the engagement teeth 21 is released, the cover 31 is pulled up by the elasticity of the spring 38 and stops when it comes into contact with the stopper 10, and one end 46 of the spring 45 rotates together with the backrest. is opened by the protrusion 52 of the ring 49 in the stop position, and the one end 46 is opened by the protrusion 4
Move away from 4.

In this state, the tooth portion 42 of the lever 41 and the tooth portion 4 of the adjustment plate 39
0, the adjustment plate 39 rotates automatically under the action of the other end 47 of the spring 45 until the protrusion 44 matches the protrusion 52, resulting in the state shown in FIG. 4, and the memory is Complete.

(Disembarkation of rear seat passengers) When a rear seat passenger exits the vehicle, pull up 8-23 as shown in FIG. comes off, the backrest side bracket 4 falls forward about the shaft 3, and the backrest side bracket 4
The side stopper collides with the seat side bracket 1 and stops.

In this state, a portion of the engaging teeth 21 of the lock plate 19 is in contact with the upper surface of the toothless portion 7 of the sector gear 5.

When the passenger in the rear seat returns to the original position after exiting the vehicle, the seat back returns to the memory position.

That is, since the engaging teeth 21 are in contact with the outer surface of the cover portion 33 of the cover 31, the cover 31 is rotated until the engaging piece 35 thereof comes into contact with the abutting piece 43 of the adjustment plate 39 (FIG. 6). make it move.

When the engagement piece 35 comes into contact with the abutment piece 43 of the adjustment plate 39, the rotation of the cover 31 is stopped, so that the retaining tooth 21 and the cover part 33 slide after that, and the engaging tooth 21 is brought into contact with the cover. When the portion 33 is outside, the engaging teeth 21 and the tooth portions 8 are engaged with each other, and the rotation of the back seat is stopped.

This position coincides with the memory position, and therefore the backrest seat is automatically set in the memory position.

After that, the engaging tooth 21 slides on the cover part 33 and becomes the state shown in FIG. 7, so that it is locked in the memory position in the own vehicle.

(Setting of another passenger) However, when another passenger is seated on the same seat as the passenger's memory set, and the inclination angle of the seat is to be changed, the operating lever 23 must be pushed up in the direction opposite to the direction of the arrow. , engaging tooth 2
1 and the tooth portion 8, the engagement tooth 21 is adjusted independently of the cover portion 33 of the cover 31, so after adjusting the backrest side bracket 4 to a desired angle.

When the operating lever 23 is released, the engagement tooth 21 and the tooth portion 8 engage again, the seat side bracket 1 and the backrest side bracket 4 are locked, and the inclination angle can be adjusted to a passenger-friendly angle.

(Fine adjustment) When the adjustment knob 13 is held and rotated, the eccentric shaft 14 fixed to the adjustment knob 13 rotates, and the eccentric portion 15 formed in a part of the eccentric shaft 14 engages with the engagement hole 16 of the sector gear 5. Since the sector gear 5 and the backrest side bracket 4 rotate within each other, the relative position of the sector gear 5 and the backrest side bracket 4 is changed. Incidentally, the rotation of the sector gear 5 is performed within the range of engagement between the rivet 11 and the elongated hole 12.

(Effects) As described above, conventionally, the seat side bracket and the backrest side bracket are attached to each other by a shaft so that they can be opened and closed, and the sector gear is attached to either the seat side bracket or the backrest side bracket. A seat recliner for a vehicle is known from Japanese Utility Model Application No. 58-73153, in which a lock plate having engaging teeth that meshes with a sector gear is attached to either the bracket or the backrest side bracket. but,
The child tilt angle of the known device is adjusted by gear teeth formed on the outer periphery of the sector gear, and cannot be adjusted at an intermediate position between the gears.

However, in the present invention, the seat side bracket 1 and the backrest side bracket 4 are pivotally connected to each other by a shaft 3 so as to be openable and closable, and the sector gear 5 is attached to either the seat side bracket 1 or the backrest side bracket 4, and the sector gear 5 is attached to either the seat side bracket 1 or the backrest side bracket 4. In the case where a lock plate 19 having engaging teeth 21 that meshes with the sector gear 5 is attached to the other of the side bracket 1 and the backrest side bracket 4, either the seat side bracket 1 or the backrest side bracket 4. and the sector gear 5 are provided with an engaging hole 1.
8 and an engagement hole 16 are respectively formed, and an eccentric shaft 14 with an adjustment knob is inserted into the engagement hole 18 and the engagement hole 16, and by rotating the eccentric shaft 14, the seat side bracket l or the back Since this is a fine adjustment device for a seat recliner for a vehicle that can change the relative position between either side bracket 4 and the sector gear 5, hold the adjustment knob 13 and turn it. The eccentric shaft 14 fixed to the adjustment knob 13 rotates and the eccentric shaft 1
The eccentric portion 15 formed in a part of the sector gear 5
The relative position of the sector gear 5 and the backrest side bracket 4 can be adjusted by simply rotating the eccentric shaft 14. At the intermediate position between the 8 gears and the gears, the effect can be adjusted in any way.

[Brief explanation of drawings]

Figure 1 is an overall side view of the present invention, Figure 2 is an exploded view of the main parts of the present invention, wIJ3 figure is a state diagram with the childcare angle adjusted for passengers, and Figure 4 is a memory of the childcare angle for passengers. Fig. 5 is a state diagram when the childcare is moved forward, Fig. 6 is a state diagram when the childcare is rotated backward from the state shown in Fig. 5, and Fig. 7 is a state diagram when the childcare is returned to the passenger's memory position. FIG. Explanation of symbols l...bracket, 2...fork, 3...shaft, 4
...Bracket, 5...Sector gear, 6...Auxiliary bracket, 7...Toothless part, 8...Tooth part, 9...
・Step part. lO... Stopper, 11... Rivet, 12...
・Long hole, 13... Adjustment knob, 14... Shaft, 15...
・Eccentric part, 16.17.18...Engagement hole, 19...
Lock plate, 20... shaft, 21... engaging tooth, 2
2... Pin, 23... Operate/<-, 24... Shaft, 25... Opening, 26... Engagement edge, 27... Upper end, 28... Lower end, 29... ...Latch, 30...Spring, 31...Cover, 32...One end, 33...Part of cover, 34...Other end, 35...Engagement piece, 36...
Projection piece, 37...Protrusion piece, 38...Spring, 39...Adjustment plate, 40...Tooth part, 41...Lever, 42...
Tooth portion, 43...Abutment piece, 44...Protrusion, 45...
Spring, 46...one end, 47...other end, 48.
...Cross part, 49...Ring, 50...Fitting hole,
51...Protrusion, 52...Protrusion, 53...Shaft, 5
4...Spring, 55...One end, 56...Other end. Patent Applicant Mitsui Kinzoku Mining Co., Ltd. Procedural Amendment Drawer May 17, 1985 Director General of the Patent Office Manabu Shiga Nao 1, Indication of Case 1985 Patent Application No. 88354 No. 3, Person Making the Amendment Address of related patent applicant: 2-1-1 Nihonbashi Muromachi, Chuo-ku, Tokyo
Name (618) Representative of Mitsui Mining Mining Co., Ltd.
Majima Kosanbe 4, agent

Claims (1)

[Claims] The seat side bracket 1 and the backrest side bracket 4 are pivotally connected to each other via a shaft 3 so as to be openable and closable, and a sector gear 5 is attached to either the seat side bracket 1 or the backrest side bracket 4.
In the case where a lock plate 19 having engaging teeth 21 that mesh with the sector gear 5 is attached to the other of the seat side bracket 1 and the backrest side bracket 4, either the seat side bracket 1 or the backrest side bracket 4 is attached. An engagement hole 18 and an engagement hole 16 are provided between one side and the sector gear 5.
are formed, respectively, and the eccentric shaft 14 with an adjustment knob is inserted into the engagement hole 18 and the engagement hole 16, and by rotating the eccentric shaft 14, either the seat side bracket 1 or the backrest side bracket 4 can be adjusted. one side and the sector gear 5
A fine adjustment device for the seat recliner for your vehicle that allows you to change the relative position of the seat recliner.