JPS63247135A - Seat elevating mechanism - Google Patents

Abstract

PURPOSE:To make it possible to vertically adjust a seat with a simple structure by supporting two rotary members coaxially with each other, which are adapted to vertically move the front side section and rear side section of the seat, at a position below the seat, and by urging two rotary members with the use of a single coil spring. CONSTITUTION:Attachments 5, 6 which support the front section of a seat 1 through an adjusting member 7 and the rear section of the seat 1 through a rotary fixture 35, respectively, are provided at both front and rear ends of a support frame 4 adapted to be fitted on a slide rail 3. The adjusting member 7 is composed of a first rotary member 32 for vertically moving the front section of the seat 1, a second rotary member 33 for vertically moving the rear section of the seat 6 through the intermediary of a connecting rod 36, which are journalled to a horizontal shaft 31, the rotary members 32, 33 being urged upward by a coil spring 40. The rotary members 32, 33 may be driven by rotary plates 18, 26 which are rotated through a gear mechanism in association with the manipulation of two knobs provided at one end of rotary shafts laid on one and the same axis.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a seat up/down mechanism.

(Prior Art) Conventionally, a seat vertical adjustment mechanism is known that allows the front and rear portions of the seat to be vertically adjusted according to the height of the passenger. In the known device, the vertical adjustment mechanisms for the front part and the rear part are each independently attached to different positions.

(Problem to be Solved by the Invention) However, in addition to the above-mentioned vertical adjustment mechanism, the seat is equipped with various adjustment mechanisms such as a longitudinal adjustment mechanism for the seat, so there is not enough room to install the device. , the structure becomes very complicated, the operability becomes poor, and the cost increases.

If the vertical adjustment mechanisms for the front part and the rear part were developed into an integrated structure, the structure would be simplified, the operability would be improved, the cost would be reduced, and other features could be improved.

However, you can do it like this:

(Means for Solving the Problem) Accordingly, the present invention provides a horizontal shaft 31 at a lower position of the seat 1, and a first rotary member that can move the front portion 45 of the seat 1 up and down on the horizontal shaft 31. and a second rotating body capable of vertically moving the rear part of the seat 1, a single coil spring is wound around the horizontal shaft 31, and one end 41 of the coil spring is rotated in the first rotation direction. The other ends C of the coil springs in the body are respectively engaged with the second rotating body, so that both the first rotating body and the second rotating body move the seat seat +-i upward by one coil spring. This is a seat up-and-down mechanism that is biased to rotate in the direction.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. 1 is a seat, 2 is a back seat, 3 is a slide rail attached to the vehicle body side, 4 is a support frame that fits into the slide rail 3,
A mounting bracket 5 is provided at the front end of the support frame 4, and a mounting bracket 6 is provided at the rear end of the support frame 4.

The mounting bracket 5 is provided with an adjusting body 7 having a double-axis swing structure. A through hole 8 is formed at a desired position of the mounting bracket 5.
Insertion ports a, a for the city shaft 9.9 are provided on both sides.

Reference numeral 10 denotes a rotating shaft, and the tip of the rotating shaft lO is inserted into a through hole 12 formed in the plate 11, and a first camshaft 13 is formed on the rotating shaft 10.

Reference numeral 14 designates a first rocking plate, which has a first eccentric shaft hole 15 formed in its base that engages with the first camshaft 13;
Internal teeth 16 are provided around 5. Reference numeral 17 denotes a long hole that engages with the center shaft 9, and when the first camshaft 13 rotates within the first eccentric shaft hole 15, the first rocking plate 14 maintains the long hole 17 fitted to the center shaft 9. Swings eccentrically.

A first rotating plate 18 is installed in parallel on the side surface of the first swinging temporary storage 4 . A rotating shaft 10 is provided at the base of the first rotating plate 18.
A shaft hole 19 is formed into which the shaft hole 19 is fitted.

An external tooth redundancy that engages with the internal tooth 16 is formed.

The external teeth have one to two fewer teeth than the internal teeth 16, and only a portion thereof engages. A diaphragm 21 is provided on the side surface of the first rotating play (18), and a through hole through which the rotating shaft 10 is inserted is formed in the center of the diaphragm 21, so that the tip of the rotating shaft 10 protrudes.

The rotating shaft 10 is formed into a double shaft from the middle, and an outer shaft η that is fitted onto the outer periphery of the rotating shaft 10 is fitted into a small diameter portion B formed on the rotating shaft lO. 24 is a second camshaft provided on the outer shaft η.

The rotating shaft 10 and the outer shaft η have the same diameter.

A second swing plate 5 formed similarly to the first swing plate 14 and a second swing plate formed similarly to the first swing plate 18 are provided with the partition plate 21 in between.

A rotating knob is attached to the outer shaft η, 6 is a rotating knob connected to the small diameter portion O, and (9) is a set screw.

A horizontal shaft 31 is provided at the rear of the mounting bracket 5, and the horizontal shaft 31 has a first rotary member that engages with the first rotating plate 18 through its axis, and a second rotating plate 26 that engages with the shaft U. The mating second rotating body blade is fixed to the shaft.

A part of the first rotating body 1 is pivotally connected to the seat 1 via the connecting rod 34, and when the first rotating body 2 rotates, the seat 1
The front portion 6 of the device is adjusted up and down between a lower front position and an upper rear position.

A part of the second rotating body blade is connected to the rotating bracket attached to the mounting bracket 6 via a connecting rod, and the rotating bracket is connected to the seat seat 1.
The rear part g is pivoted on the shaft (and when the second rotating plate is rotated clockwise, the second rotating body wing is rotated counterclockwise, and the rotating metal fitting A is rotated clockwise via the connecting rod, The shaft (is moved up and down from the lower front position to the upper rear position.

The spring is wound around the horizontal shaft 31 by a coil spring, one end 41 of which is engaged with the first rotating body (the other end C is engaged with the second rotating body blade),
The first rotating body is created by a single coil spring! The second rotating body also urges the seat 1 to rotate in the upward movement direction.

(effect) Next, we will discuss the effect.

When you hold the rotary knob and rotate it, the rotation axis 10
rotates and rotates the first camshaft B, so the first camshaft 13 swings and rotates the first swinging plate 14, and a portion engages with the internal teeth 16 of the first swinging plate 14. The first rotary play N8 rotates because the external teeth are advanced by one tooth per rotation of the first camshaft. Since the first rotary body J is engaged with the first rotary plate 18 through its axis, the first rotary body sludge is rotated about the horizontal axis 31, and the seat is moved through the connecting rod U. The front part 6 of the seat 1 is lifted.

Further, when the rotation knob is rotated, the second camshaft 24 is rotated via the outer shaft η, so the second rocking plate with which the second camshaft 24 is engaged is rocked, In the same manner, the second rotating plate 9 is rotated one tooth at a time, and the second rotary body wing, which is connected to the second rotating plate 9 by a weak axis, is rotated, so that Rotate the rotating metal fitting A vertically from the lower front position to the upper rear position, and move the shaft attachment part upward to lift the rear part n.

Therefore, since one end 41 of the coil spring 41 is engaged with the first rotating body and the other end C is engaged with the second rotating body, one coil spring ω causes the coil spring ω to engage the first rotating body and the second rotating body. Both wings can be constantly biased to rotate in the direction of moving the seat 1 upward, which makes the operation easier.

(Effects) Hitherto, there has been known a vertical adjustment mechanism for a seat that allows the front and rear portions of the seat to be adjusted up and down in accordance with the height of the passenger. In the known device, the vertical adjustment mechanisms of the front part and the rear part are each independently attached to different positions.

However, in addition to the above-mentioned vertical adjustment mechanism, the seat is also equipped with various other adjustment mechanisms such as a longitudinal adjustment mechanism for the seat, so there is not enough room to install the device, and the structure becomes extremely complicated and operability is poor. It gets worse and costs more.

However, in the present invention, the horizontal shaft 31 is located at a lower position of the seat 1.
The horizontal shaft 31 is provided with a first rotary body that can vertically move the front part 6 of the seat 1 (and a second rotary body wing that can vertically move the rear part q of the seat l). One coil spring is wound around the horizontal shaft 31, and one end 41 of the coil spring is engaged with a first rotating body (the other end C of the coil spring is engaged with a second rotating body), thereby forming one coil spring. The structure is simple because the seat up-and-down mechanism is constructed by urging both the first rotor blade and the second rotor blade to rotate in the direction of moving the seat sheet 1 upward by a coil spring. Moreover, it is characterized by extremely light and nimble operability.

4 is an exploded view, FIG. 4 is a plan view of the main part, FIG. 5 is a side view of the front adjustment part, and FIG. 6 is a side view of the rear adjustment part.

Explanation of symbols l...Seat sheet, 2...Back seat, 3...Slide rail, 4...Support frame, 5...Mounting bracket, 6
...Mounting bracket, 7.Adjustment body, 8.Through hole, 9.
... City axis, 10... Rotating shaft, 11... Plate, Minister... Through hole, 爲... Cam shaft, 14... First rocking plate,
Takumi... First eccentric shaft hole, 16... Internal teeth, 17...
Long hole, 18... first rotation plate, 19... shaft hole,
Redundancy...gear, 21...diaphragm, η...outer shaft, n...
・Small diameter part, 24...Camshaft, δ...Second rocking plate, 3
...Second rotating plate, n...Fixed plate, n.
... Rotating knob, n... Rotating knob, (9)... Set screw, 31... Horizontal axis,! ...First rotating body, field...
The second rotating body, the joint...the connecting rod, ah...the rotating metal fitting, ah...
・Connection rod, 37-... Rear, A... Shaft attachment part, (... Leg, Chestnut... Coil spring, 41... One end, 42... Other end, 8.44... Shaft , 6...front part.

Patent applicant Mitsui Mining & Mining Co., Ltd. (2 persons) Figure 5 Figure 6 Procedural amendment (acid) Commissioner of the Patent Office Kuro 1) Akio Tono 1, Indication of the case 1986 Patent application No. 80530 2, Invention ( 7) Name Seat up/down mechanism 3, relationship with the case of the person making the amendment Patent applicant address 2-1-1 Nihonbashi Muromachi, Chuo-ku, Tokyo Name (618) Mitsui Kinzoku Mining Co., Ltd. Representative Kozo Mashima Section 4, 1 other person (1)
Correct the drawings (Figures 1 to 6).

Claims (1)

[Claims] A horizontal shaft 31 is provided at a lower position of the seat 1, and the horizontal shaft 31
A first rotating body 32 that can move the front part 45 of the seat 1 up and down, and a second rotating body 33 that can move the rear part 37 of the seat 1 up and down are fixed to the horizontal axis 31. winds one coil spring 40, one end 41 of the coil spring 40 is engaged with the first rotating body 32, and the other end 42 of the coil spring 40 is engaged with the second rotating body 32, so that the first rotation is caused by the one coil spring 40. body 32 and second rotating body 33
Both seat up and down mechanisms are biased to rotate the seat 1 in the upward movement direction.