JPH0311078Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a height-adjustable suspension seat that is mounted, for example, as a front seat in an automobile.

The front seats of automobiles are usually adjustable in the fore-and-aft direction to suit the height of the occupants. However, the eye level position of the occupant is also an important factor for safe driving, and also has a favorable effect on long drives without fatigue.

Therefore, recently, vehicles with adjustable front seats have been put into practical use. Some car models are equipped with electric motors that allow the seat to be moved up and down electrically, but this increases the cost, so mechanical suspension suspensions are used, as shown in Figures 1 to 3. Shion sheets are often used. That is, in the figure, 1 is a base frame fixed to a vehicle body A, and this is connected to an upper bracket 3 via a cushion mechanism 2, which will be described later. A seat body 4 is mounted on this atsupah bracket 3. The cushion mechanism 2 has a base frame 1
and a link assembly 5 whose ends are rotatably connected to the attachment bracket 3 and which intersect with each other approximately in the center, and this link assembly 5.
a pivot lever 6 penetrating through the intersection of the pivot lever 6, tension springs 7, 7 with one end hooked to the pivot lever 6 and the other end hooked to the base frame 1; It is composed of a shock absorber 8 and the like installed between the two.

By configuring the cushion mechanism 2 in this way, the elastic force of the tension springs 7 acts to constantly bias the seat body 4 upwardly via the uppuff bracket 3, and the shock absorber 8 acts on the seat body 4. This means that vertical vibrations of the main body 4 can be absorbed.

The height position of the seat body 4 is adjusted by a hook mechanism 9. As shown in FIG. 4, this includes a hook lever 11 having multiple stages of hooks 10 provided on the front surface of the upper bracket 3, and an engaging pin 12 provided on the front end of the base frame 1. Consisting of An operating lever 13 is integrally provided on the aforementioned foot lever 11, and when the operating lever 13 is rotated to engage the desired hook portion 10 on the engagement pin 12, the seat body 4 is moved to that height position. This means that it is possible to maintain

To further explain the above-mentioned hook lever 11, it is constructed as shown in FIGS. 5 and 6, and includes a hook plate 14 having the above-mentioned hook portions 10 and a lever plate 15 having the above-mentioned operation lever 13. a pivot pin 17 that rotatably suspends the upper ends of the hook plate 14 and lever plate 15 from the lower end of the bracket 16 provided on the upper bracket 3, and a spring mounting pin 18. The tension spring 19 elastically urges the lever plate 15 to rotate in the direction of the engagement pin 3 via the lever plate 15. The upper end of the hook plate 14 is connected to the lever plate 1.
There is a gap between the upper end of the bracket 16 and the upper end of the bracket 16, and the lower ends of the hook 10 and the operating lever 13 are bent in opposite directions so as to leave a gap. It is formed. A bending tongue piece 15a that is bent in a substantially horizontal direction is integrally provided at a substantially central portion of the lever plate 15, and this bending tongue piece 15a is joined to a bending portion 14a of the hook plate 14, for example. They are integrated by fixing means such as spot welding. Therefore, when the operating lever 13 is rotated, the hook plate 14 is also rotated at the same time.

However, the hook mechanism 9 configured in this way
is acting, that is, when any of the hook portions 10 is engaged with the engagement pin 12, the elastic force and shock absorbing force of the cushion mechanism 2 do not act at all, and the shock is entirely absorbed by the hook mechanism 9. In particular, the hook plate 14 having the hook portion 10 is hung from the vehicle body A to the seat body 4 in the vertical direction.

However, the hook plate 14 has a bent portion 1.
4a is simply fixed to the bent tongue piece 15a of the lever plate 15, so the strength is weak. In particular, since these joints are in the horizontal direction orthogonal to the direction of impact, they are easily affected by strong impact and are easily deformed as shown by the two-dot chain line in FIG. Once deformed, the position of the hook portion 10 will also be different, making it impossible to adjust it again.

The present invention was developed in view of the above circumstances, and its purpose is to provide a suspension seat equipped with a hook mechanism that has increased strength and improved durability. be.

That is, in the present invention, the hook lever constituting the hook mechanism is composed of two hook plates, which are spaced apart from each other so that the bracket can be inserted from the upper end to the approximately central portion, and which are spaced apart from each other from below the central portion. A bent piece part is polymerized and bonded to the lower end part, and is bent from the center part of one hook plate to come into contact with the edge of the other hook plate, and is fixed to the other hook plate. This suspension seat is characterized in that an operating lever capable of rotating the foot lever is coupled to this folded piece.

From this, the hook lever consists of a superimposed bonding portion of the two hook plates and a substantially closed cross-sectional portion having a U-shaped cross section formed by the bent piece, thereby ensuring a double rigid portion.

An embodiment of the present invention will be described below with reference to FIGS. 7 and 8. However, the hook mechanism 19
Since all the constituent parts except for are the same as those shown in FIGS. 1 to 3, the same figures will be applied and the explanation will be omitted. In the figure, 20 is a front hook plate, 21 is a rear hook plate, and these plates 20 and 21 constitute a hook lever 30. Further, the front hook plate 20 and the rear hook plate 21 are parallel to each other and have a gap therebetween so that the bracket 16 can be inserted from the upper end to approximately the center thereof. Attachment holes 22, 22 through which pivot pins (not shown) pass are provided at respective opposing positions. They are overlapped with each other from approximately the center to the lower end, and are firmly and closely fixed by, for example, fixing screws 23. Plural stages of hook portions 24 are provided at the close contact portions of the front hook plate 20 and the rear hook plate 21. That is, the positions of the hook portions 24 of both plates 20 and 21 are common. Only the front hook plate 20 has a bent piece portion 20a formed substantially in the center so as to be in contact with the edge of the rear hook plate 21. Further, in the foot lever 30, the front hook plate 20 and the rear hook plate 21 are fixed to each other from the center to the bottom, and the bent piece 20a and the edge of the rear hook plate 21 are fixed by, for example, welding means. According to the foot lever 3
The center part of the 0 has a substantially U-shaped cross section, and the strength is further improved. A tension spring 25 is attached to the bent piece portion 20.
One end is adjusted to elastically urge the front hook plate 20 to rotate together with the rear hook plate 21 in the direction of the hook portions 24 . Further, a lever plate 26 is screwed onto the front surface side of the bent piece portion 20a with mounting screws 27a. This lever plate 26 is bent in the opposite direction to the hook portions 24, and an operating lever 27 is attached to the end thereof.

By configuring the hook mechanism 19 in this manner, the height position of the seat body 4 can be set in the same way as in the conventional case. In other words, the operating lever 2
7 to engage a desired hook portion 24 on the engagement pin 12, the elastic force of the tension springs 7, 7 of the hook mechanism 2 and the shock absorbing force of the shock absorber 8 are regulated.

Further, even if the hook mechanism 19 is subjected to impact vibrations of the vehicle body A during driving, this component will not be deformed. That is, the impact vibration is applied from the vehicle body A to the hook lever 30 having the hook portions 24 through the engagement pin 12, or in the opposite direction. In short, force acts in the vertical direction between the vehicle body A and the seat body 4 via the hook mechanism 19. However, the foot lever 30 consists of a front hook plate 20 and a rear hook plate 21,
In addition, these are joined to each other along the vertical direction, and the bent piece portion 20a integrally bent on the front hook plate 20 and the rear hook plate 21 form a substantially U-shaped cross section.
By ensuring double rigid parts, the force caused by vibration can easily escape and stress will not be applied. After all, there is no place that receives the force due to vibration, so no deformation occurs at any place.

As explained above, according to the present invention, the foot lever is composed of two hook plates, which are polymerized and bonded from the lower center part of the hook plates to the lower end part, and from the center part of one of the hook plates. Since a bent piece is bent and fixed to the edge of the other hook plate, it has the effect of ensuring double rigidity, reliably preventing deformation due to impact, and improving durability. play.

[Brief explanation of drawings]

Figure 1 is a partial front view of the suspension seat.
Fig. 2 is a side view, Fig. 3 is a plan view, Fig. 4 is an exploded perspective view of only the main parts, Fig. 5 is a side view of the hook mechanism showing a conventional example of the present invention, and Fig. 6 is the same. FIG. 7 is a perspective view of the hook mechanism in the middle of assembly, showing an embodiment of the present invention, and FIG. 8 is a perspective view of the hook mechanism in the assembled state. A...Vehicle body, 1...Base frame, 4...Seat body, 3...Attachment bracket, 2...Cushion mechanism, 19...Hook mechanism, 24...Hook part, 30...Hook lever, 20... Front hook plate, 21...Rear hook plate,
16... Bracket, 20a... Bent piece part, 27
...Operation lever.

Claims (1)

[Scope of utility model registration request] A base frame attached to the vehicle body, an upper bracket that supports the seat body, and an upper bracket that connects the upper bracket and the base frame to elastically support the upper bracket and the seat body, and are attached in a direction that constantly pushes them up. a foot lever that is rotatably supported on a bracket provided on the attachment bracket and has a plurality of hook portions; and a foot lever that projects from the base frame and engages with the hook portion of any one of the foot levers. and a hook mechanism consisting of a removable engagement pin to fix the seat body at a desired height and regulate the elastic force of the cushion mechanism, wherein the hook lever has two hook plates at the upper end. The brackets are spaced apart from each other from the central part to the approximately central part of the hook plate, and are polymerized and bonded from the lower part of the central part to the lower end of the central part of the hook plate. It is characterized by comprising a bent piece portion that is bent to abut on the end edge and fixed to the other hook plate, and further includes an operating lever that can rotate the hook lever coupled to the bent piece portion. suspension seat.