JPS63247137A - Seat elevating mechanism - Google Patents

Abstract

PURPOSE:To make it possible to prevent a foot from being collapsed when the foot is brought into below the rear section of a seat, by providing such an arrangement the front and rear sections of the seat may be inclined between the forward lower position and the rearward upper position. 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 vertically adjusted and rotated between the forward lower position and the rearward upper position by means of rotary plates 18, 26 which are rotated by manipulating knobs or the like.

Description

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

(Prior Art) Conventionally, a seat vertical adjustment mechanism is known in which the height is adjusted by vertically moving the front and rear portions of the seat.

(Problems to be Solved by the Invention) As shown in Figure 1, in the known system, when a person in the rear seat inserts his or her toes under the seat in the front seat, the seat is lowered. When this happened, the foot washer would be crushed.

Therefore, the above-mentioned defects were overcome by using a simple link mechanism.

(Means for Solving the Problem) Therefore, the present invention is designed to prevent the toes of the feet from being crushed even when the front seat is lowered, and the front part 45 and the rear part g of the seat 1 are moved to the lower front position. This is a seat vertical adjustment mechanism whose height is adjusted by tilting the seat from the rear to the upper position.

(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 upper shaft 9.9 are provided on both sides of the upper shaft 9.9.

1O is a rotating shaft, and the tip of the rotating shaft 10 is inserted into the through hole ν formed in the plate 11, and the first camshaft 1 is inserted into the rotating shaft 10.
form 3.

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 upper shaft 9. When the first camshaft 13 rotates within the first eccentric shaft hole 15, the first oscillating plate 14 maintains the long hole 17 fitted to the upper shaft 9. Swings eccentrically.

A first rotating plate 18 is installed on the side surface of the first swinging plate 14 in parallel. The base of the first rotation plate 18 has a rotation axis lO.
A shaft hole 4 to be fitted into the shaft hole 4 is formed, and external teeth redundant to engage with the internal teeth 16 are formed.

The external teeth have one to two fewer teeth than the internal teeth 16, and only a portion thereof engages. A partition plate 21 is provided on the side surface of the first rotating plate 18, and a through hole through which the rotating shaft 10 is inserted is formed in the center of the partition plate 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 fitted on the outer periphery of the rotating shaft 10 is fitted into a small diameter portion B formed on the rotating shaft 10. 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 3 formed similarly to the first swing plate 14 and a second swing plate 26 formed similarly to the first swing plate are provided with the partition plate 21 in between.

n is a fixed plate (which can also be used as the mounting bracket 5), 28 is a rotating knob attached to the outer shaft η, 4 is a rotating knob connected to the small diameter portion B, and (9) is a set screw.

A horizontal shaft 31 is provided for each rear portion of the mounting bracket 5, and a first rotary shaft 31 is provided on the horizontal shaft 31 to engage with the first rotation plate 18 through its axis.
The rotating body support and the second rotating body blade that engages with the second rotating plate with a weak shaft are fixed to each other.

The lower end of the connecting rod, which is fixed to the seat l by a shaft 46, is pivoted to a part of the first rotating body support by a shaft 47. Therefore, when the third rotary member rotates, the front portion 6 of the seat 1 is tilted and vertically adjusted between the lower front position and the upper rear position.

A part of the second rotary body is connected to a rear part of the rotating metal fitting 6 via a connecting rod. The front end of the connecting rod I is fixed to the shaft O, and the rear end of that connecting rod is fixed to the shaft (capital).
The shaft is fixed at .

When the rear part (g) of the seat (seat seat) 1 is pivotally attached to the rotating metal fitting (seat seat) 1, and the second rotating play (2B) rotates around the shaft 31, the second rotating body (2B) rotates and connects. Rotate the rotating metal fitting A through the rod to move the pivoting part (A) from the lower front position to the upper rear position for tilting and vertical adjustment (A).

40 is a coil spring wound around the horizontal shaft 31, one end of which 41
is the first rotating body (the other end C is engaged with the second rotating body 33), so that both the first rotating body η and the second rotating body wings are moved upward in the direction of the seat 1 by the coil springs. energize it to rotate.

(effect) Next, we will discuss the effect.

When you hold the rotation knob 4 and rotate it, the rotation axis lO
rotates, and the first camshaft 13 causes the first rocking plate 14 to swing, so that the external teeth, which are partially engaged with the internal teeth 16 of the first rocking plate 14, are rotated per rotation. 18 rotates, first rotation play) 18
The first rotating member, which is engaged with a pin, is vertically adjusted and rotated about the horizontal axis 31 from the front lower position to the rear upper position, and the front end of the seat l is lifted via the connecting rod U. do.

Also, when the rotation knob is rotated, the second camshaft 24 is rotated via the outer shaft η, so the second oscillation plate δ, which is engaged with the second camshaft 24, is oscillated and rotated in the same manner. By the method described above, the second rotating plate is rotated one tooth at a time, and the second rotating body wing connecting the pin to the second rotating plate is rotated. A is rotated up and down from a lower front position to an upper rear position, and the shaft mounting part wings are moved upward to lift the rear part g.

At this time, the lift of the rear part g is an inclined vertical movement from the lower front position to the upper rear position, so as shown in Figure 1, even if you put your foot under the rear part g, it will not collapse. .

(Effects) Conventionally, a seat vertical adjustment mechanism is known in which the height is adjusted by vertically moving the front and rear portions of the seat.

The known method, as shown in Figure 1, is that if a person in the rear seat inserts his or her toes under the seat in the front seat, when the seat is lowered, the toe organ may be crushed. Become.

However, in the present invention, the toes of the feet are not crushed even when the front seat is lowered, and the front part 45 and the rear part of the seat 1 are tilted and moved from the lower front position to the upper rear position. Since this is a seat vertical adjustment mechanism in which the height is adjusted by adjusting the height of the seat, the rear portion V moves up and down with an inclination from the lower front position to the upper rear position. As shown, even if a measuring device is placed under the rear molecule, it will not collapse.

[Brief explanation of the drawing]

Figure 1 is a side view, Figure 2 is a cross-sectional view, Figure 3 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.
... Specific axis, 10 ... Rotation axis, 11 ... Plate, ... Through hole, 13 ... Camshaft, 14 ... First rocking plate, 15 ... First eccentric shaft Hole, 16... Internal tooth, 17.
...Elongated hole, 18...First rotating plate, 19...Shaft hole, Redundant...Gear, 21...Diameter, η...Outer shaft, n
...Small diameter part, 24...Camshaft, δ...Second rocking plate, N...Second rotating plate, n...Fixed plate,
n... Rotating knob, 29... Rotating knob, (capital).
...set screw, 31...horizontal shaft, tap...first rotating body, oh...second rotating body, ji...connecting rod, ah...rotating metal fitting,
I... Continuous rod, G... Rear part, Wing... Shaft attachment part, (
...leg, season...coil spring, 41...one end, C.
...Other end, 43, U...shaft, 6...front part, mallet,
47, mallet, 49, (fund)...shaft. Patent applicant: 1 person other than Mitsui Kinzoku Mining Co., Ltd. Figure 5 Figure 6 Procedural amendment (discharge) June 11, 1988 Patent application No. 80532 2' Invention o-i Seat vertical adjustment 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 Makoto
Island: 1 person outside the Ministry of Justice 4, 5 agents, Date of amendment order 8, Contents of amendment (1) Supplement power of attorney. (2) Correct the drawings (Figures 1 to 6). (2) Amendment drawing

Claims (1)

[Claims] A seat vertical adjustment mechanism in which the height is adjusted by tilting a front part 45 and a rear part 37 of a seat 1 from a lower front position to an upper rear position.