JPH058191Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a variable direction seat, and particularly to a variable direction seat suitable for reducing weight.

(Prior art) Seats used in vehicles, etc. should be able to change their direction, such as to match the direction of travel of the vehicle, or to allow people in the front and people in the back to face each other. things are being done.

Various types of such direction-variable seats have been proposed in the past, for example, in Japanese Utility Model Application Publications No. 57-199138 and Japanese Utility Model Application Publication No. 58-92139. In these previously proposed variable direction seats, the seat frame that constitutes the seat is basically supported on a base via a rotation mechanism, and this rotation mechanism is quite complex and heavy. It was warm. The reason this rotating mechanism was heavy and complicated was that it needed to be strong enough to support, for example, an entire three-person seat, and in some cases This was originally to prevent this seat from interfering with other seats located in front and behind it when changing the direction of the seat.

As mentioned above, if the variable direction seats are heavy as a whole, this is one of the reasons why it is difficult to increase the speed of vehicles and trains equipped with them. The fact that it had parts made it more likely to cause failures.

Therefore, the inventor of the present invention has conducted extensive research into a variable-direction seat that is less likely to malfunction and is lighter in weight.The inventor of the present invention has developed a structure in which almost the entire seat frame that constitutes the seat is completely placed on the base. The present invention was completed based on the new knowledge that doing so produces good results.

(Problems to be solved by the invention) The present invention was developed based on the above-mentioned circumstances.
and heavy.

The object of the invention in the first claim is not only to have a sufficient function as a seat that can change direction, but also to have an extremely simple structure and a weight reduction compared to the conventional case. The aim is to provide a directional seat that can also be made very light. In addition, the object of the device claimed in the second claim is the same as that of the device claimed in the first claim, and furthermore, when the control cables arranged for various purposes change the direction of the seat. The object of the present invention is to provide a directional seat that can avoid entanglement.

(Means for Solving the Problems) In order to solve the above problems, the means adopted by the invention according to the first claim will be explained with reference to the drawings corresponding to the embodiments. In a seat in which a frame 20 is rotatably supported with respect to a base 10 so that the seating direction can be changed, a support part 11 that supports a vertical rotation shaft 40 in the center part is provided.
A base 1 having a pair of guide plates 12 protruding in an arc shape centered on a vertical rotation axis 40 at both ends thereof.
0, has approximately the same width as this base 10, is rotatably supported with respect to the base 40 by a vertical rotation shaft 40, and has left and right sections along the outer shape of the guide plate 12 on a part of its lower surface. A seat frame 20 having a pair of support plates 21, and a sliding member 1 that is fixed to mutually opposing surfaces of the base 10 and the seat frame 20 to smooth the sliding movement of both.
5, 25, and are provided on the support plate 21, and the seat frame 20 is attached to the base 10.
A roller 22 that comes into contact with the lower surface of the guide plate 12 when placed on the guide plate 12 to support the seat frame 20 with respect to the base 10;
The direction-variable seat 100 is characterized in that it is equipped with a swing stopper 30 that engages in an opening 23 formed in a support plate 21 on the zero side to restrict rotation of the seat frame 20 with respect to the base 10.

In addition, the means taken by the device according to the second claim are:
To explain this with reference to the drawings corresponding to the embodiment, the support portion 11 of the vertical rotation shaft 40 is integrally provided on a beam member 16 disposed at a predetermined distance from the center of the base 10, and the beam member 16 is provided with a The variable direction seat 100 according to the first claim is characterized in that a part of the control cable 50 connecting the swing stopper 30 side and the seat side is supported.

(Function of the device and mode of use) Regarding the function of each device configured as described above,
It will be explained in sections below along with the mode of its use.

Regarding the variable direction seat 100 according to the first claim, first, when the variable direction seat 100 is in a stopped state, the seat frame 20 constituting the seat has a sliding member 15 provided on the entire upper surface of the frame-shaped base 10. It is placed on top. Therefore, the entire seat is the base 1
The seat is supported by a rectangular frame of 0.0, and the seat is supported with its weight distributed over the entire base 10. Expressing this in reverse, the base 10 supports the seat frame 20 with its square frame, so even if the configurations of the base 10 and the seat frame 20 are simple, the base 10 supports the seat frame 20 with its square frame. This provides sufficient support for the seat.

Here, if the user of this direction-variable seat 100 wants to change the direction of the seat, he or she depresses the foot pedal 31 provided on the base 10 side and moves the swing stopper 30 to the support plate 20 on the seat frame 20 side. Remove it from the opening 23 provided in the. As a result, the seat frame 20 constituting the seat can be rotated relative to the base 10, so that the user pushes the seat and rotates it 180 degrees around the vertical axis of rotation 40. When the seat is rotated, the seat frame 20 that constitutes the seat comes into sliding contact with the base 10 as it is, but there is a sliding member 25 and a sliding member on the lower surface of the seat frame 20 and the upper surface of the base 10. 15, these sliding members 25 and 15 are in direct sliding contact with each other. Therefore, the rotation of the seat is performed smoothly without generating any abnormal noise due to the smooth sliding contact between both sliding members 25 and the sliding member 15.

When the seat is rotated a certain amount, the support plate 21 provided on the other side of the seat frame 20 moves to the guide plate 12 of the base 10.
The roller 22 provided on the seat frame 20 side comes into contact with the lower side of the guide plate 12 on the base 10 side. As the seat is further rotated, all the rollers 22 provided on the support plate 21 of the seat frame 20 come into contact with the lower surface of the guide plate 12, and finally the stoppers 24 on the seat frame 20 side touch the base 10.
An opening 2 that contacts the side stopper 14 to prevent rotation of the seat and is provided in the support plate 21 on the seat frame 20 side.
A swing stopper 30 fits into the inside of the holder 3.

As a result, each roller 22 provided on each support plate 21 located on the left and right sides of the seat frame 20 comes into contact with the lower surface of each guide plate 12 provided on the left and right sides of the base 10, so that the seat frame 20 is Guide plates 12 on the left and right sides of the stand 10
In contrast, the seat frame 20, that is, the seat, is firmly supported via each support plate 21.
There is no so-called wobbling with respect to 0.

The seat frame 20 can only be rotated within a range of 180° by the stopper 24 provided on the support plate 21 coming into contact with the stopper 14 provided on the guide plate 12 on the base 10 side.

- Regarding the variable direction seat 100 according to the second claim, in addition to having the same effect as the variable brightness seat 100 in the first claim, this variable direction seat 100 also has the following effects. are doing.

That is, a foot pedal 31 for operating the swing stopper 30 is connected to a control cable 50 for returning the seat backrest to its original position.
This control cable 50 is connected through the base 10 to a damper member (commonly known as a free lock) that adjusts the angle of the backrest, and the position of the control cable 50 changes as the seat rotates. It is something. However, the variable direction seat 100 according to this invention
, the beam member 1 is arranged such that the support part 11 of the vertical rotation shaft 40 is spaced a predetermined distance from the center of the base 10.
6 and also supports a part of the control cable 50 connecting the swing stopper 30 side and the seat side on this beam member 16, so that no excessive force is applied to the control cable 50. , the vertical rotating shaft 40 and the like will not become entangled.

In other words, since the control cable 50 is connected to the beam member 16 located at a predetermined distance from the vertical rotation axis 40 which is the center of rotation of the seat, the control cable 50 is connected to the beam member 16.
Even if the control cable 50 is fixedly connected to the control cable 50, no unreasonable force is applied to the control cable 50, and it will not become entangled with the vertical rotation shaft 40. Therefore, even if the seat rotates, the control cable 50 will not be forcibly twisted and the control operation will become impossible, and furthermore, the control cable 50 will not get tangled with surrounding objects. be.

(Example) Next, each of the above-mentioned ideas will be explained in detail according to an example shown in the drawings.

1 and 2 show a front view and a side view of a variable direction seat 100 according to each invention, and this variable direction seat 100 has a base 10 fixed on the floor of a vehicle. Seat frame 20 that makes up the seat
is rotatably supported by a vertical rotating shaft 40 located at the center of the base 10.

The base 10 is as shown in FIGS. 3 to 5, and its basic structure is a square frame. That is, the base 10 is constructed by combining angle materials, for example, and has a structure in which a square frame supporting the lower surface of the seat frame 20 that constitutes the seat is supported by a plurality of legs. , a considerable amount of weight has been reduced.

At the center of this base 10, there are
As shown in the figure, a support part 11 for a vertical rotation shaft 40 that rotatably supports a seat frame 20 constituting a seat is provided with respect to the base 10. This support portion 11 is actually provided integrally with a beam member 16 placed a predetermined distance from the center of the base 10 .

Further, at both left and right ends of the base 10, as shown in FIGS. 3 and 4, there are guide plates 12 that protrude in an arc shape centered on the vertical rotation shaft 40 supported by the support portion 11. Each is provided integrally with the base 10. In addition, in this embodiment, each guide plate 1
2 is the base 1 to form the same surface as the top surface of the base 10.
However, the position of each guide plate 12 may be changed as appropriate depending on the position of the support plate 21 on the seat frame 20 side and each roller 22 provided thereon, which will be described later. be. Furthermore, since each guide plate 12 guides and supports each roller 22,
It is also possible to form an inclined surface to easily guide each roller 22, or to provide an elastic material for each roller 22.

Furthermore, in the passage side portion of the base 10, a pedal support portion 13 is provided below the guide plate 12.
A foot pedal 31 is attached to this pedal support portion 13 so as to be movable up and down, as shown in FIGS. 6 to 8. This foot pedal 31 is configured to always return to its initial position by means of a return spring 32 suspended between the foot pedal 31 and the base 10 side.

The seat frame 20 constituting the seat is shown in Fig. 14 and Fig. 1.
As shown in Fig. 5, two pipes arranged horizontally at the bottom of the seat are connected by a pair of support plates 21, and in the center thereof, as shown in Fig. 16, The base 10 supports the vertical rotation shaft 40.
It has a support part formed corresponding to the support part 11 on the side. The size relationship between the seat frame 20 and the base 10 is as shown in FIGS. 1 and 17, and especially as shown in FIG.
The width of 0 is approximately the same as the width of the base 10. The reason why the width of the seat frame 20 is made substantially the same as the width of the base 10 is to allow the seat to be completely placed on the base 10. Then, on the lower surface of this seat frame 20, the base 1
A sliding member 25 is provided at the portion facing 0.

As shown in FIGS. 15 and 19, the pair of left and right support plates 21 integrally provided on the seat frame 20 have a circular arc shape centered on the vertical rotation axis 40, that is, each guide plate on the base 10 side. It is formed into an arc shape that matches the external shape of the plate 12. This is because the seat frame 20 rotates with respect to the base 10, so the support plate 21 on the seat frame 20 side is attached to the base 10.
This is to prevent interference with the guide plate 12 on the 0 side, and to ensure that each roller 22 provided on the support plate 21 contacts the guide plate 12 of the base 10.

Each roller 22 provided on each support plate 21 is connected to the seat frame 2.
In order to facilitate relative movement between the support plate 21 on the 0 side and the guide plate 12 on the base 10 side, each support plate 21
It is interposed between the guide plate 12 and the guide plate 12 to support both. Therefore, the positional relationship of each roller 22 with respect to the support plate 21 and guide plate 12 is as shown in FIGS. 17 and 19.
As shown in FIGS. 14 and 17, an opening 2 in the center of each support plate 21 is provided in which a swing stopper 30 provided on a foot pedal 31 is fitted.
3 is provided.

The swing stopper 30 moves the seat frame 2 relative to the base 10.
0, and is provided integrally with the foot pedal 31, as shown in FIGS. 6 to 8 and 17.

In addition, in this embodiment, as shown in FIGS. 9, 10, and 17, a plurality of control cables 50 (in this embodiment, three because the seat is for three people) are provided. is the foot pedal 31 mentioned above.
It is connected to. Each control cable 50
is for returning the backrest of each seat to its original position, and the other end is connected to a damper member (not shown) of each seat. Each of these control cables 50 is connected to a beam member 16 for providing the support portion 11 of the base 10 in the middle thereof.
This beam member 16 is fixed to the base 10 side at a predetermined distance from the center of the base 10, so that the connection points of each control cable 50 to this beam member 16 are connected to the base 10. It is assumed that it is separated from the support part 11 by a predetermined distance.

In the above embodiments, a seat for three people was used, but each design has a seat for one person,
It goes without saying that the invention can also be applied to seats for two or even four people.

(Effect of the invention) As explained above, in the invention according to the first claim, the seat frame 20 constituting the seat is rotatably supported with respect to the base 10, and the seating direction can be changed. In the seat configured as shown in FIG.
A base 1 having a pair of guide plates 12 protruding in an arc shape centered on a vertical rotation axis 40 at both ends thereof.
0, has approximately the same width as this base 10, is rotatably supported with respect to the base 40 by a vertical rotation shaft 40, and has left and right sections along the outer shape of the guide plate 12 on a part of its lower surface. A seat frame 20 having a pair of support plates 21, and a sliding member 1 that is fixed to mutually opposing surfaces of the base 10 and the seat frame 20 to smooth the sliding movement of both.
5, 25, and are provided on the support plate 21, and the seat frame 20 is attached to the base 10.
A roller 22 that comes into contact with the lower surface of the guide plate 12 when placed on the guide plate 12 to support the seat frame 20 with respect to the base 10;
The feature is that it is provided with a swing stopper 30 that engages in an opening 23 formed in the support plate 21 on the zero side and restricts the rotation of the seat frame 20 with respect to the base 10. It is possible to provide a directionally variable seat 100 that not only has sufficient functions as a variable seat but also has an extremely simple structure and is significantly lighter in weight than conventional seats. It is.

Further, in the present invention according to the second claim, in addition to having the same effect as the variable direction seat 100 according to the first claim, the supporting part 11 of the vertical rotation shaft 40
is integrally provided on a beam member 16 disposed a predetermined distance from the center of the base 10, and a part of the control cable 50 connecting the swing stopper 30 side and the seat side is supported on this beam member 16. In addition to being similar to that of the invention according to the first claim, it is possible to prevent the control cable 50 arranged for various purposes from getting tangled when the direction of the seat is changed, and the control cable 50 can be This makes it possible to provide a directionally variable seat that can be operated reliably without twisting.

[Brief explanation of the drawing]

Figure 1 is a front view of the directionally variable seat according to the present invention;
Figure 2 is a side view of the same, Figure 3 is a front view of the base, Figure 4 is a front view of the base, and Figure 4 is a front view of the base.
5 is a side view of the same, FIG. 6 is a partially enlarged front view showing the relationship between the foot pedal and the swing stopper, FIG. 7 is a plan view of the same, and FIG. FIG. 3 is a partial cross-sectional view taken along a line. Figure 9 is a partial front view showing the state in which the foot pedal etc. are assembled to the base, Figure 10 is a plan view of the same, and Figure 11 is the first
Figure 12 is a partially enlarged cross-sectional view taken along the - line in Figure 0, Figure 12 is a partially enlarged cross-sectional view taken along the - line in Figure 10, and Figure 13 is a partially enlarged cross-sectional view taken along the - line in Figure 10. It is a diagram. Fig. 14 is an enlarged sectional view of the seat frame seen from the roller mounting part side, Fig. 15 is a plan view of Fig. 14, Fig. 16 is a partially enlarged sectional view seen from the vertical axis of rotation, and Fig. 17 is the base frame. Partially enlarged sectional view showing the seat frame placed on the table, No. 18
The figure is a partially cutaway left side view of Figure 17.
FIG. 9 is a partial plan view of FIG. 17. Explanation of codes, 100...Direction variable seat, 10...
... Base, 11 ... Support part, 12 ... Guide plate, 13
...Pedal support part, 14...Stopper, 15...
Sliding member, 16... Beam member, 20... Seat frame, 21
... Support plate, 22 ... Roller, 23 ... Opening, 2
4... Stopper, 25... Sliding member, 30... Rocking stopper, 31... Foot pedal, 40... Vertical rotation axis, 50... Control cable.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A seat in which the seat frame constituting the seat is rotatably supported with respect to a base so that the seating direction can be changed, with a vertical rotation axis in the center. a base having a supporting part for supporting the base and having a pair of guide plates protruding in an arc shape centered on the vertical rotation axis at both ends; a seat frame that is rotatably supported with respect to the base by a seat frame and has a pair of left and right support plates on a portion of the lower surface thereof along the outer shape of the guide plate; and the base and the seat frame are opposed to each other. a sliding member that is fixed to a surface of the support plate and that is provided on the support plate and that comes into contact with the lower surface of the guide plate when the seat frame is placed on the base; , a roller that supports the seat frame with respect to the base; and a roller that is provided on the base side so as to be movable up and down and that engages in an opening formed in a support plate on the seat frame side to support the seat frame with respect to the base. A direction-variable seat characterized by comprising a swing stopper for regulating the rotation of the seat. 2. A support part for the vertical rotation shaft is integrally provided on a beam member disposed a predetermined distance from the center of the base, and a part of the control cable connecting the stopper side and the seat side is attached to this beam member. A variable-direction seat according to claim 1, characterized in that it supports: