JPH0459886B2 - - Google Patents

Description

[Detailed Description of the Invention] a. Field of Industrial Application The present invention relates to a foldable retractable seat that is attached to a vertical wall, and in which a treadle that interlocks with the seat is provided to increase the seat height, and is mainly used for vehicles. Pertains to.

b. Conventional technology and its problems In recent years, the floors of tour buses have become significantly higher, and the floor surface of the passenger seats has become approximately 500 to 600 mm higher than the floor surface of the driver's seat, so when a bus guide sits in the guide seat, the faces of the passengers in the rear seats are raised. An inconvenience has occurred where the image cannot be seen. Regarding the retractable guide seat that is attached to the driver's seat partition wall, a raised type seat has been developed that eliminates the above-mentioned disadvantages, but in this known example, a manual lifting device is attached to raise and lower the entire seat. In addition, an independent retractable step is installed at the bottom of the partition wall so that it can be used as needed, so retracting the guide seat after using it is complicated and requires a large number of operation steps. Therefore, in the event of an accident or other emergency evacuation, there was a risk that the guide seat would become a major obstacle for passengers.

c. Purpose of the Invention The purpose of the present invention is to make it possible to raise the height of the seat by a step in a foldable retractable seat that is attached to a vertical wall by arranging a footboard at the foot rest position in front of the seat. By linking the seat and treadle with each other, the seat and treadle can be pulled out and retracted with a single touch operation, meeting the demand for vehicle seats that require a raised height above the floor, such as guide seats on raised-floor tour buses. On the other hand, the object of the present invention is to provide a retractable seat that is easy to handle and highly safe.

d Structure of the present invention The structure of the present invention is to provide an outer frame for storing the seat, to connect the side end of the seat portion to the outer frame so as to be rotatable, and to change the rotation range of the seat portion from approximately horizontal to In a retractable seat that has an angle of approximately 90 degrees to the vertical and is retracted when the seat is vertical, the height can be increased by expanding the front end of the outer frame forward and downward. We added an auxiliary storage room that is significantly lower than the seat storage room, installed a horizontal tread in front of the seat and at a position significantly lower than the seat, and installed the side edge of the tread into the auxiliary storage room. The rotation range of the treadle is approximately 90 degrees from horizontal to vertical, and the rotational end of the seat and the rotational end of the treadle can be linked with each other using a hanging post. The basic dimensions are set so that the seat and the footboard can move in parallel.

e-1 First Embodiment FIG. 1 is a left front perspective view showing the first embodiment of the present invention in a usage state, FIG. 2 is a left side view showing the same embodiment in a stored state, and 1 is a main body. It has a stepped box-shaped outer frame that includes a storage chamber 1a and an auxiliary storage chamber 1b, and the bottom of the auxiliary storage chamber 1b is located in front of and significantly lower than the bottom of the main storage chamber 1a. The outer frame 1 in this example corresponds to the front end of the outer frame of a conventional retractable seat expanded forward and downward, and there is also a difference in level between the bottom of the auxiliary storage compartment 1b and the bottom of the main storage compartment 1a. is designed to have approximately the same dimensions as the average length of a human arm. As a supplementary note regarding the outer frame 1, this example is an example of a rear-facing retractable guide seat that is attached to the partition wall of the driver's seat of a right-hand drive sightseeing bus, and the outer frame 1 is used for driving with only the flange on the left end side exposed. It is embedded and fixed in the seat partition wall. The height of the outer frame 1 from the floor is set so that the height of the guide seats is finally approximately equal to the height of the audience seats.

2 is a seat, 3a and 3b are a pair of support fittings fixed to the front end right side and rear end right side respectively of the seat part 2, and 4 and 4 are opposite to the lower part of the front wall and the lower part of the rear wall in the main body storage chamber 1a. 2 planted in a targeted and concentric arrangement
The book's spindles, 5, 5, are above the spindles 4, 4,
These are stoppers fixed at positions close to 4. The basic shape of the support fittings 3a and 3b is L-shaped.
A bearing hole is drilled in the center, and the bearing hole is connected to the support shafts 4, 4.
By fitting the seat portion 2 to the outer frame 1, the right end portion of the seat portion 2 is rotatably connected to the outer frame 1. Figure 1 shows the seat 2 in a horizontal position. In this state, the rotating ends of the supports 3a and 3b abut the stoppers 5 and 5, so the seat 2 is stable in a horizontal position. and can support the seating load.

Reference numeral 6 denotes a foldable backrest rotatably mounted on the upper surface of the seat portion 2 at a position near the rear end. back support 6
A pair of left and right legs 7a and 7b each having a bearing hole is attached to both the left and right ends of the lower part.
On the upper surface of the seat 2 near the rear, there are two support shafts 8, 8 arranged so as to be left and right opposite to each other and to maintain concentricity with each other. The back rest 6 is rotatably connected to the seat part 2 by fitting the holes into each other, and the back rest 6 is connected to the seat part 2 when it is retracted, like a normal retractable seat.
Fold it forward until it is parallel to the seat 2,
When in use, the backrest 6 is designed to be raised and stabilized by a stopper in a position slightly tilted back from the vertical. As for the folding structure of the back support 6, any of various publicly known structures can be adopted as long as the folding function described above can be achieved.

When storing the seat, first fold the backrest 6 forward, then place your hand on the rotating end of the seat 2, that is, the left end, and push it upwards.
At the same time, the main body is switched to a vertical position and stored in the main body storage chamber 1a. It is preferable to make the width of the outer frame 1, that is, the storage depth, as small as possible from a design standpoint, so each dimension is designed so that the bottom surface of the seat portion 2 stops at the same position as the left end surface of the outer frame 1 when the seat is stored. and
Therefore, the range of rotational movement of the seat portion 2 is limited to approximately 90 degrees from approximately horizontal to vertical. In addition, in the retracted state, the combined center of gravity of the seat 2 and the back rest 6 is shifted to the right from above the axis line of the support shafts 4, 4, so the seat 2 and the back rest 6 are in a vertical position. can maintain stability.

Reference numeral 9 denotes a horizontal footboard disposed in front of the seat 2 and at a position significantly lower than the seat 2. The right end of the footboard is rotatably connected to the auxiliary storage chamber 1b; The lower end of the hanging column 10 is rotatably connected to the end, that is, the rotating end, and the upper end of the hanging column 10 is connected to the seat 2.
In other words, the footboard 9 and the seat portion 2 are rotatably connected to the pivoting end of the suspension column 10 . The basic dimensions, or effective lengths, of the movement components are set so that the four sides of the interlocking movement, or link movement, between the seat 2 and the footboard 9 form a parallelogram, so the seat 2 and the footboard 9 are perfectly aligned. Parallel link movements can be performed. The vertical step between the seat 2 and the tread 9 is designed to have approximately the same dimension as the average length of the human armpit, so that the load when seated is distributed between the seat 2 and the tread 9 in an appropriate ratio. can do.

The treadle 9 moves in a parallel link with the seat 2, in other words, it moves in a subordinate manner to the rotational movement of the seat 2, so when the seat is stowed, the seat 2 must be stowed. Just by performing the operation, the footboard 9 is switched to the vertical position and stored in the auxiliary storage chamber 1b. When the seat is in the retracted state, each dimension is designed so that the bottom surface of the treadle 9 is flush with the left end surface of the outer frame 1, and the outer surfaces of the seat 2, suspension column 10, and treadle 9 are all aligned. It is stored in the same state. In addition, since the rotating end of the tread plate 9 is suspended from the seat 2 via the hanging post 10, the tread plate 9 is stabilized in a vertical position, and the range of rotation of the tread plate 9 is approximately from horizontal to vertical. The angle will be constant at approximately 90 degrees.

To supplement the connection structure between the footboard 9 and the auxiliary storage chamber 1b, reference numerals 11a and 11b are a pair of supporting metal fittings fixed to the front end right side and the rear end right side of the footboard 9, respectively, and 12 and 12 are the support metal fittings fixed to the front end of the footboard 9 in the auxiliary storage chamber 1b. Two support shafts installed in the lower part of the wall and the lower part of the rear wall in a facing and concentric arrangement, 13, 13 are the support shafts 12, 12
These stoppers are fixedly installed at close distances above the seat portion 2 and are assembled in the same structure as the connection structure between the seat portion 2 and the outer frame 1. Note that if the operation of the stoppers 13, 13 does not synchronize with the operation of the stoppers 5, 5 when the seat is pulled out, the seating load will be concentrated on one of the stoppers, resulting in the inconvenience of maintaining machining accuracy. If this is difficult, alternative measures may be taken such as making the seat 2, supporting metal fittings 3a, 3b, supporting shafts 4, 4, and stoppers 5, 5 particularly robust, and expanding the load capacity of the hanging column 10. It is also possible to eliminate the stoppers 13, 13.

14 is a sleeve plate attached to the left end of the outer frame 1, 15
is a guide notch provided in the sleeve plate. When pulling out the seat, insert your hand into the notch 15,
Grasp the hanging pillar 10 and pull it toward you to release the seat 2 and footboard 9.
causes a parallel link movement, and the vertical position shown in Fig. 2 can be switched to the horizontal position shown in Fig. 1 with just one touch operation. Subsequently, by erecting the backrest 6, the raised seat can be easily assembled. When storing the seat, fold down the backrest 6, then place your hand on the pivoting end of the seat 2, that is, the left end, and push it upwards.
The entire seat returns to the retracted state shown in Figure 2 with a single touch operation.

e-2 Second Embodiment Figure 3 is a left side view showing the stored state of the second embodiment of the present invention.The main difference from the first embodiment is that the hanging pillar is widened forward. The suspension pillar 16 was changed to a triangular wall shape, and the connection structure at the lower end was changed from a one-point type to a two-point type in the front and back. The purpose of the suspension pillar 16 is to prevent the person from stepping on the wrong foot.
This has the effect of protecting the right leg of the seated person.

In connection with the above-mentioned changes, a built-in handhold 17 is attached to the center of the hanging column 16, the tread 9 is replaced with a tread 18 that changes from a 3-point support system to a 4-point support system, and the outer frame 1 is suspended. It is replaced with an outer frame 20 whose shape has been partially changed to match the pillar 16, and the sleeve plate 1
4 is abolished as it is unnecessary.

The content of this embodiment is the same as the first embodiment except for the changes mentioned above, and therefore, the operation when pulling out and storing the seat is no different from the first embodiment, so the explanation will be omitted. do.

e-3 Third Embodiment The content of this embodiment is based on the seat part 2 in the first embodiment.
Only the connection structure between the outer frame 1 and the outer frame 1 has been changed, and the purpose of the change is to reduce the seating load applied to the support shafts 4, 4, which form the pivot axis of the seat 2. The contents of the change in the connection structure will be explained below with reference to the diagram.

First, the stoppers 5, 5 are abolished to remove the function of stabilizing the seat 2 in a horizontal position. Next, a position on the rear end surface of the seat part 2 and near the rotation end of the seat part 2, that is, the leg 7
A connecting shaft 21 with its axis oriented in the front-rear direction is installed at a position close to a, and a connecting shaft 21 with its axis oriented in the front-rear direction is installed at a position close to the rear wall surface of the main body storage chamber 1a and its upper corner. One connecting shaft 22 is planted facing the
In other words, connecting shafts 21 and 22 whose axis lines are parallel to each other are connected to the rear inner wall of the outer frame 1 and the rear rotational end of the seat part 2.
are attached to each, and a bi-folding link 23 is connected to the terminals of both connecting shafts so that it can be bent approximately at the center, and the effective length of the link is such that it is in a straight extension state when the seat part 2 is in a horizontal position. Therefore, the bi-folding link 23 functions as a diagonal hanging member, thereby maintaining the horizontal posture of the seat portion 2 and supporting the seating load.

When the seat is pulled out, a tensile load is applied to the bi-fold link 23 due to the weight of the seat regardless of whether the seat is occupied or not.
will maintain a straight-stretched state in a diagonal hanging position. When storing the seat, when the rotating end of the seat part 2 is pushed up by hand, the bi-folding link 23 bends downward under its own weight, so the bi-folding link 23 moves in conjunction with the seat part 2. The seat part 2 is folded into a V shape.
Together with this, it is stored in the main body storage chamber 1a.

In addition, in this embodiment, the distance between the dynamic fulcrum for maintaining the horizontal posture of the seat portion 2 and the support shafts 4, 4 has been significantly expanded compared to the first embodiment. The effect of significantly reducing the seating load acting on the support shafts 4, 4 can be obtained.

This embodiment has the same structure as the first embodiment except that the structure for maintaining the horizontal posture of the seat 2 has been changed, so the operating method when pulling out and storing the seat, as well as
The operations of the seat 2, footboard 9, hanging post 10, etc. are exactly the same as in the first embodiment.

f Effects of the present invention According to the present invention, in a folding and retractable seat that is attached to a vertical wall, a folding and retractable treadle is provided and the treadle is linked to the seat using a hanging column, so that only one touch operation is required. It is possible to construct a raised seat where the seat and tread can be pulled out and stored.For example, it can be used as a raised guide seat embedded in the driver's seat partition of a high-floor tour bus, making it easy to handle and safe. A high retractable seat can be provided.

[Brief explanation of the drawing]

Fig. 1 is a left front perspective view showing the first embodiment of the present invention in a usage state, Fig. 2 is a left side view showing the same embodiment in a stored state, and Fig. 3 is a left side view of the second embodiment of the present invention. FIG. 4 is a left side view showing a stored state, and a perspective view, with some parts omitted, showing a usage state of the third embodiment of the present invention. 1... Outer frame, 1a... Main body storage chamber, 1b... Auxiliary storage chamber, 2... Seat, 3a, 3b... Support metal fittings, 4... Support shaft, 5... Stopper, 6... Back rest , 7a, 7b...legs, 8...support shafts, 9...stepboards, 10...hanging columns, 11a, 11b...support fittings, 12...support shafts, 13, 13...stoppers,
16...hanging pillar, 17...handrail, 18...stepboard, 20...outer frame.

Claims (1)

[Claims] 1. An outer frame for storing the seat is provided, the side edges of the seat are rotatably connected to the outer frame, and the rotation range of the seat is approximately 90 degrees from approximately horizontal to vertical; In a retractable seat that is retracted when the seat is placed vertically, the front end of the outer frame is expanded forward and downward, making the height significantly lower than the storage compartment of the seat. A horizontal treadle is installed in front of the seat and at a position significantly lower than the seat, and the side end of the treadle is rotatably connected to the auxiliary storage room. , the rotation range of the treadle is approximately 90 degrees from horizontal to vertical, and the rotational end of the seat and the rotational end of the treadle are connected by a hanging post so that the seat and the treadle can be moved together. A retractable seat characterized in that the seat and the treadle can be pulled out and retracted with a single touch operation by setting each basic dimension to allow parallel link movement.