JPS6321459Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a convenient return device for a sliding seat used in vehicles such as buses, railway vehicles, and ships.

For example, in the case of two-person seats on buses, etc., in order to improve comfort during long-distance operations, it is possible to move one of the two seats laterally and horizontally to increase the lateral distance between the seats. Sliding devices are widely used, but with conventional sliding devices, each time, whether it is to expand the lateral distance or return to the original position, it is necessary to release the slide lock of the seat and move the seat laterally. Therefore, in the event of an emergency evacuation, it takes time to return the seat, prolonging the evacuation time.

The purpose of the present invention is to provide a collective type seat with multiple seating sections, in which one seat or two seats at both ends can be slid laterally at will within a certain range, and when the seat is returned to its original position, the slide lock must be released. The object of the present invention is to eliminate the above-mentioned drawbacks by configuring a slide device so that the seat can be moved laterally without applying an operating force for lateral movement.

The present invention will be explained in detail below with reference to embodiments of the drawings.

In FIGS. 1 and 2, 1 is a leg frame main body for supporting the entire seat, which is formed into a frame shape with a plurality of members; 2
is a frame-shaped movable seat frame that independently supports the sliding seat portion, and is disposed opposite to the leg frame body 1 in a space above or at the same height as the leg frame body 1. 3 and 3' are two parts of a composite structure consisting of a movable part and a fixed part, as is well known.
By arranging the sliding rails in parallel in the horizontal direction and interposing them between the leg frame main body 1 and the movable seat frame 2, the movable seat frame 2 can be moved relative to the leg frame main body 1. They are connected so as to be slidable in the lateral and horizontal directions.

4 is a vertical swinging cam disposed in the space below the seat; 5 is a support shaft forming the center of the swinging cam; 6 is a support that projects horizontally from the leg frame body 1; The support shaft 5 is integrally connected to approximately the center of the swing cam 4 via a support member 7 of an appropriately shaped shape, and is fitted into a bearing 8 fixed to the support base 6. In other words, the swing cam 4 is It is attached to the leg frame main body 1 in a manner that it can rotate within a certain range, that is, it can slide, using the support shaft 5 as a rotation axis.

Reference numeral 9 denotes a roller type or simple cylindrical follower disposed below the seat 10, and the follower is connected to the seat 10 or the movable seat frame 2 via an appropriately shaped support base 11.
The swing cam 4 has a guide groove 1 whose basic shape is an inverted N shape or a similar bent shape.
A swing cam 4 is provided so that the follower 9 is always fitted into the guide groove, and the follower 9 is fitted into the bent portion on the left end side of the guide groove 12 when the seat is in its original position. The relative positional relationship between the slide lock mechanism and the follower 9 is set, and the slide lock mechanism of this embodiment is configured. The follower 9 is always fitted into the guide groove 12, and therefore can repeat a lateral reciprocating movement within a certain range relative to the swing cam 4.

13 is a guide washer attached to the leg frame body 1; 14
is a control cable for transmitting operating force to the swing cam 4, and on the output side of the control cable, an outer cable is connected to the guide washer 13, an inner cable is connected to the right side of the swing cam 4, and the output side of the control cable is connected to the right side of the swing cam 4. A compression-type restoring spring 15 is fitted in the inner cable to constantly apply a restoring force in the opposite direction to the force, in other words, a repulsive force always acts between the guide washer 13 and the swing cam 4. As shown, a restoring spring 15 is attached, and the input side of the control cable 14 is connected to an operating lever disposed at a suitable location on the seat, for example, at the tip of an armrest (not shown), and when the operating lever is operated, the above-mentioned The operating system of this embodiment is configured in such a manner that the traction force is transmitted through the inner cable.

Numeral 16 is a power storage spring that serves as a power source when the sliding seat returns to its original position by itself.The right end of the power storage spring is locked to the movable seat frame 2, and the left end is locked to the leg frame body 1 or the leg frame body. 1, and the device of the first embodiment of the present invention is constructed as described above.

The energy storage spring 16 in this embodiment is composed of a tension spring, but due to design considerations, the spring type is changed to a compression spring such as an air spring.
The compression spring can also be installed with its left end engaged with the movable seat frame 2 and its right end engaged with the leg frame body 1. The accumulating spring 16 is designed to constantly generate tensile stress, so if the spring characteristics are appropriately set, the accumulating spring 16 can It is possible to stabilize the position of the sliding seat with only the traction force of It can be deformed into an L shape.

The purpose of the restoring spring 15 is to constantly apply a restoring force in the opposite direction to the operating force, that is, a counterclockwise rotational force, to the swing cam 4.If this purpose can be achieved, the spring type should be a compression spring, tension spring,
Either a torsion spring or a bent leaf spring may be employed. For example, a helical spring may be fitted to the support shaft 5 instead of the restoring spring 15, and the helical spring may be used as a torsion spring. Alternatively, instead of using the elastic force of the spring, a weight of appropriate weight may be attached to the left end of the swing cam 4, and the gravity of the weight may be used to generate the rotational force.

Furthermore, since the purpose of the operation system in the present invention is to generate rotational force in a fixed direction on the swing cam 4 by external operation, if this purpose can be achieved, the type of operation force transmission will be a control cable type, a link type, etc. interlocking type,
There is no problem with either lever direct connection type, for example,
The control cable 14 is abolished, and a horizontal bar-type operating lever is arranged on the right side of the swing cam 4 instead.
The right end of the operating lever may be used as the operating end, and the left end may be directly connected to the swing cam 4 to form an operating system.

The slide lock mechanism mainly composed of the swing cam 4 and the follower 9 is intended to appropriately restrict the relative lateral reciprocating movement of the movable seat frame 2 with respect to the leg frame body 1. Therefore, for example, the swing cam 4 is moved to the movable seat frame 2 side, and the follower 9 is moved to the leg frame main body 1 side, in other words, the mounting positions of both are vertically opposite to those in FIG. It is also possible to configure In this case, the fitting position of the follower 9 when the sliding seat is in its original position is transferred to the right-end bent portion of the guide groove 12.

Next, to explain the operation of the first embodiment shown in FIGS. 1 and 2, when the sliding seat is in its original position, the follower 9 is at the left end of the guide groove 12 in the swing cam 4, as shown in the figure. Since it is fitted into the side bent portion and a counterclockwise rotational force is applied to the swing cam 4 by the repulsive force of the restoring spring 15, the lateral movement of the follower 9 is suppressed, and the follower As a result, the sliding seat is stably held in its original position. When the sliding seat is to be slid sideways, a traction force is first supplied to the right end of the swing cam 4 through the control cable 14, and the swing cam 4 is rotated clockwise to a certain angle. As the rocking cam 4 rotates clockwise, the follower 9 escapes from the left bent portion of the guide groove 12, in other words, the slide lock function is released. Next, a pressing force is applied to the sliding seat in the right direction, that is, in the direction of arrow R, to cause the seat to slide laterally. As the sliding seat moves laterally, sufficient energy is stored in the energy storage spring 16 to return the seat to its original position. When the sliding seat has slid sideways to a predetermined position, when the traction force of the control cable 14 is cut off, the swing cam 4 is rotated counterclockwise by the repulsive force of the restoring spring 15 to take the position shown in FIG. As it returns, the follower 9 fits into the right-end bent portion of the guide groove 12 . Since the counterclockwise rotational force continues to act on the swing cam 4, the follower 9 is prevented from moving in the lateral direction, and the slide seat is therefore stably held in the slide position. To return the sliding seat to its original position, once again supplying traction force to the right end of the swing cam 4 through the control cable 14, the swing cam 4 will rotate clockwise and the follower 9 will move to the right end of the guide groove 12. Since it escapes from the side bending portion, in other words, the slide lock function is released, the slide seat immediately starts moving to the left under its own power due to the traction force of the energy storage spring 16. When the sliding seat reaches its original position, the repulsive force of the restoring spring 15 causes the swing cam 4 to return to the position shown in FIG. 2 again. Once the sliding seat starts moving to the left, there is no need to immediately release the sliding lock; in other words, the sliding seat can be returned to its original position by itself by performing a momentary sliding lock releasing operation.

The second embodiment shown in FIGS. 3 and 4 is an example of a type in which the swing cam swings on a horizontal plane, and the structure of the slide lock mechanism is such that the slide lock mechanism in the first embodiment is moved forward by 90 In this case, the swing cam was installed on the movable seat frame side and the follower was installed on the leg frame main body side. In the figure, 6' is a support that projects horizontally from the movable seat frame 2, and 17 is a horizontal rocking cam disposed below the support 6'.
The swing cam 17 is mounted on the tip of the support base 6' by a support structure similar to that of the first embodiment so as to be rotatable within a certain range. 11' is a support base attached to the leg frame body 1, and the follower 9 is mounted on the upper part of the support base 11'.
A guide groove 18 whose basic shape is N-shaped or a similar bent shape is bored in the swing cam 17, and the follower 9 is always fitted into the guide groove, and when the seat is in the original position, the follower 9 is not engaged. The relative positional relationship between the swing cam 17 and the follower 9 is set so that the child 9 fits into the right-end bent portion of the guide groove 18, thereby configuring the slide lock mechanism of this embodiment. Reference numeral 19 denotes a rod-shaped operating lever that is disposed on the right side of the swing cam 17 and has one end fixed to the swing cam 17, and 20 is engaged with the right end of the swing cam 17 and an appropriate location on the movable seat frame 2, respectively. With the tension-type restoring spring, a clockwise rotational force is constantly applied to the rocking cam 17 due to the tensile stress of the restoring spring, and as is clear from FIG. The device of this embodiment is constructed in such a manner that when an operating force is applied to the operating end and the operating end is moved a certain distance in the direction of arrow S, the slide lock function is released.

In this embodiment as well, it is possible to change the basic shape of the guide groove 18 to a simple L shape in the same way as in the modification of the first embodiment, and also to change the mounting method of the spring type of the restoring spring 20. Therefore, it is possible to change to other types such as compression springs, torsion springs, bending springs, etc. Furthermore, the structure of the operating part is
Due to design considerations, the operating lever is not directly connected.
The present invention can be implemented by combining any appropriate operation system, such as interposing a control cable in the middle using the same method as in the first embodiment. As for the mounting positional relationship between the rocking cam and the follower, the device of the present invention can be configured even if the mounting positions of both are changed to be vertically opposite to that shown in FIG. 4, as in the modification of the first embodiment. .

The operation of the device of the second embodiment is exactly the same as that of the first embodiment, except that the form of operating force transmission is changed from the traction force of the control cable to the moment force of the operating lever.

As detailed above, according to the easy return device for a sliding seat according to the present invention, the seat can be slid sideways at will according to the passenger's free will, and the slide lock is released momentarily when the seat is returned to its original position. Since the seat returns to its original position by simply operating the seat, the effect of simplifying the operation and speeding up the restoration of the aisle width in the event of an emergency evacuation can be achieved. In addition, since the movable seat frame 2 is completely restrained in the sliding direction, there is no inconvenience that the sliding seat will malfunction even if the vehicle body shakes sideways.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the first embodiment of the present invention excluding the seat, Fig. 2 is a longitudinal sectional front view taken along line A-A in Fig. 1, and Fig. 3 is a second embodiment of the present invention. FIG. 4 is a vertical sectional front view taken along line BB in FIG. 3. In the figure, 1 is the leg frame body, 2 is the movable seat frame,
3 and 3' are sliding rails, 4 is a swing cam, 9 is a follower,
14 is the control cable, 15 is the restoring spring,
16 is a spring for accumulating energy, 17 is a rocking cam, 19 is an operating lever, and 20 is a restoring spring.

Claims (1)

[Scope of utility model registration request] There are two parts between the leg frame body that supports the entire seat and the movable seat frame that independently supports the sliding seat part.
In a sliding seat consisting of a set of sliding rails, the basic shape is N-shaped, and an inverted N-shaped space is provided in the space below the seat.
A rocking cam having a guide groove in the shape of an L-shape or an inverted L shape, and a follower that is fitted into the guide groove of the rocking cam and performs a constant reciprocating motion are arranged in combination, and the rocking cam and the driven Attach one of the two to the leg frame body and the other to the movable seat frame or seat, and connect the link, control cable, or operating lever for transmitting the operating force to the swing cam, and also connect the operating force to the swing cam. A restoring spring or weight is attached to constantly exert a restoring force in the opposite direction, and a restoring spring or weight is installed between the leg frame body or other structural parts fixed to the leg frame body and the movable seat frame. A convenient return device for a sliding seat characterized by having a spring installed therein.