JPH07213558A - Seat of electromotive wheel chair - Google Patents

Abstract

PURPOSE:To make it possible, among other things, to warm up not only the underside of the hip but also around the hip. CONSTITUTION:The seat 9 of an electromotive wheelchair 1 is constituted with a seat back 10 to support the back of the driver, a seat bottom 11 to support the hip of the driver and a seat belt 12 formed in one piece with the seat bottom 11, where heating wires 18 are buried inside the seat bottom 11, which is equipped to the seat frame 28 of the body 4 of the wheelchair via stoppers and holes in a detachable manner. The outer skin material 19 is extended from the upper top edge of the rear side of the seat bottom 11 to form the seat belt 12 in one piece with the seat bottom 11 and heating wires connected to the heating wires 18 in the seat bottom 11 is sewed on the backside of the seat belt 12 and further Velcro fasteners are attached at both ends in the lengthwise direction of the seat belt main part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wheelchair seat, and more particularly to an electric wheelchair seat having a structure in which a seat belt is attached to a seat under for supporting the waist of a driver.

[0002]

2. Description of the Related Art Conventionally, electric wheelchairs which are driven by a battery as a power source have been widely used. The seats of the electric wheelchairs are a seat back supporting a driver's back and a seat supporting a driver's waist. It has a structure with under and. In general, wheelchairs are often used by elderly people who have backache and the like.
As described in Japanese Patent No. 1 or the like, a structure has been developed in which a heater wire is embedded in a seat under and a seat back to heat a waist and a back.

As an example of heating the seat of an electric wheelchair, there are those shown in FIGS. 9 to 11, for example. Figure 9
In the example shown in, the seat back 7 fixed to the electric wheelchair
The heater wire 74 is embedded inside a thin heating seat 73 having substantially the same planar shape as the seat 72 composed of 0 and the seat under 71, and the heating seat 73 is equipped with a seat back mounting band 75, for example, in winter. When the vehicle is cold, the heating seat 73 is attached to the seatback 70 via the seatback mounting band 75, and the connector 77 of the heater power supply cable 76 attached to the heating seat 73 is connected to a predetermined power source to supply power to the heater wire 74. As a result, the entire seat 72 is heated. in this case,
There is also a structure in which the heating seat 73 is simply placed on the seat 72 for use without providing the seatback attachment band 75 on the heating seat 73.

Further, in the example shown in FIG. 10, a heater wire 83 is provided over the entire inside of a seat 82 composed of a seat back 80 and a seat under 81 fixed to an electric wheelchair.
Heater feeding cable 8 embedded in the seat and attached to the seat 82
The heater wire 83 is connected to the connector 85 of No. 4 by a predetermined power source.
By heating the sheet 82, the entire seat 82 is heated.

Further, in the example shown in FIG. 11, a seat back 90 fixed to an electric wheelchair and a seat under 91 constituted as an option attachable to and detachable from the electric wheelchair.
In the seat 92 consisting of, a heater wire 93 is embedded inside the seat under 91, and a normal seat under (not shown) in which the heater wire is not embedded is removed from the electric wheelchair in cold weather such as winter, and the seat under 91 is attached. Then
Heater power supply cable 94 attached to the seat under 91
The connector 95 is connected to a predetermined power source to supply power to the heater wire 93 so that only the seat under 91 is heated.

[0006]

However, among the above-mentioned conventional techniques, the one disclosed in Japanese Utility Model Laid-Open No. 1-87721 has a structure in which a heater wire is separately embedded in a seat back and a seat under. , It is necessary to separately provide a power supply system for the heater wire on the seat back side and a power supply system for the heater wire on the seat under side,
There was a problem such as an increase in the number of parts related to heater power supply. In addition, in the example shown in FIG. 9, the heating seat 73 is mounted on the seat 72 via the seat back attachment band 75 or simply placed on the seat 72. There is a problem that the heating sheet 73 is displaced from the sheet 72 while it is used while sitting on the sheet 73, and the appearance is not good.

Further, in the example shown in FIG. 10, since the heater wire 83 is embedded in the entire seat 82 fixed to the electric wheelchair, the heater wire 83 is installed even for a driver who does not need heating. However, since the seat 82 is used throughout the season, deterioration of the seat 82 affects the durability of the heater wire 83. Furthermore, FIG.
In the example shown in Fig. 9 and the examples shown in Fig. 9 and Fig. 10, the structure is such that the lower side of the waist can be warmed but the waist cannot be warmed. Therefore, especially for a driver with low back pain, it is cold in the winter. Sometimes there was a problem that I could not do it even if I wanted to warm the entire waist.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a seat for an electric wheelchair, which is capable of improving the disadvantages of the above-mentioned conventional example and, in particular, capable of heating not only the lower side of the waist but also the waist. To aim.

[0009]

The present invention according to claim 1 provides an electric wheelchair seat having a seat back for supporting the back of a driver of an electric wheelchair and a seat under for supporting the waist of the driver. A seat under is detachably attached to the electric wheelchair, a heater wire is embedded inside the seat under, a seat belt is attached to the seat under, and a heater wire is embedded inside the seat belt. The composition is adopted. This aims to achieve the above-mentioned object.

According to a second aspect of the present invention, the seat belt is integrally provided on the seat under, and the heater wire is continuously provided inside the seat belt and the seat under.

[0011]

According to the present invention of claim 1, the seat under is detachably mounted on the electric wheelchair, the heater wire is embedded in the seat under, the seat belt is attached to the seat under, and the seat belt Since the heater wire is embedded inside, not only the lower side of the waist of the driver of the electric wheelchair but also the waist can be heated at the same time. Therefore, when the electric wheelchair is used in cold weather such as in the winter, or when a driver with low back pain uses the electric wheelchair, the entire waist can be heated, which is preferable.

According to the second aspect of the present invention, the seatbelt is integrally equipped with the seat under, and the heater wire is continuously laid inside the seat belt and the seat under. Can be made compact and good in appearance, and a power supply system such as a cable and a connector for supplying power to the heater wire can be integrated into one, and the number of parts for power supply can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment to which the electric wheelchair seat of the present invention is applied will be described below with reference to the drawings.

First, the overall structure of the electric wheelchair according to this embodiment will be described with reference to FIG. 2. The electric wheelchair 1 includes a vehicle body 4 equipped with one steering wheel 2 and two drive wheels 3, and a vehicle body 4. A handle post 6 hung vertically through a leg shield 5 on the front of the vehicle, an operation box 7 and an operation handle 8 provided on the upper portion of the handle post 6, and a seat provided from the central portion to the rear portion of the vehicle body 4. 9 and 9.

The seat 9 of the electric wheelchair 1 is integrated with the seat back 10 for supporting the driver's back, the seat under 11 detachably provided on the vehicle body 4 and supporting the waist of the driver, and the seat under 11. The seat belt 12 is provided. Furthermore, car body 4
Includes a battery cover 13 accommodating a battery and the like, a rear cover 14 for covering the two drive wheels 3 and the like, and a seat back 10.
Is equipped with a pair of seat frame pipes 15 and 16 for supporting the battery cover 13 and a seat frame portion 28.

In this case, the operation box 7 described above is
In addition to a forward / backward switch, an accelerator lever, a brake lever, etc., a switch (not shown) for instructing power supply (heating mode) to the heater wire of the seat under 11 and the seat belt 12 is provided.

Next, the seat under 1 according to the present embodiment.
1 and the structure of the seat belt 12 will be described with reference to FIG. 1, the seat under 11 is formed in, for example, a substantially rectangular parallelepiped shape, and the seat under main body 17 and the interior of the seat under main body 17 are symmetrical with respect to the driver. The heater wire 18 embedded in the underside and the skin material 19 covering the seat under body 17 are provided. Furthermore, a pair of stoppers 2 having, for example, a cylindrical shape are provided at both corners of the lower surface of the seat under 11 on the wheelchair advancing direction side.
0 and 21 are projected downward.

Further, a skin material 19 is extended from the upper edge of the seat under 11 on the wheelchair retreating direction side so as to have a width substantially the same as the width of the seat under 11, and extends from the upper edge of the seat under. Further, the skin material 19 extends substantially symmetrically on both sides in the width direction of the seat under 11, and these extending portions constitute the seat belt 12. That is, the seat belt 12 is provided integrally with the seat under 11. In this case, the electric wheelchair 1
From the standpoint of outdoor use and reduction of its manufacturing cost, the skin material covering the seat under 11 and the skin material constituting the seat belt 12 are made of polyvinyl chloride or the like, and have water resistance and weather resistance (light resistance). Is formed from an inexpensive synthetic resin material having

The seat belt 12 is a seat belt main body 2
2, a heater wire 23 that is sewn on the back side of the seat belt main body 22 symmetrically with respect to the driver and is connected to the heater wire 18 of the seat under 11, and is provided at both longitudinal ends of the seat belt main body 22. And magic fasteners 24 and 25. in this case,
Although the magic fasteners 24 are arranged on the front side of the seat belt body 22 (front side of the plane of FIG. 1) and the magic fasteners 25 are arranged on the back side of the seat belt body 22 (back side of the plane of FIG. 1), the arrangement relationship may be reversed. Good.

Further, both terminals 18A of the heater wire 18 embedded in the seat-under body 17 of the seat-under 11,
18B is connected to the heater power supply connector 27 via cables 26A and 26B. The heater power supply connector 27 is connected to a power supply connector (not shown) attached to the battery housed inside the battery cover 13. It is designed to be detachably connected. The seat under 11 and the seat belt 12 are heated by supplying power to the heater wires 18 and 23 of the seat under 11 and the seat belt 1.

Between the pair of seat frame pipes 15 and 16 described above, there is provided a seat frame portion 28 for detachably fixing the seat under 11 to which the seat belt 12 is attached. Frame part 2
8 is fixed to the upper portion of the battery cover 13. A hole portion 2 having a shape in which a pair of stoppers 20 and 21 projecting from the lower surface of the seat under 11 engage with both corners of the upper surface of the seat frame 28 on the wheelchair advancing direction side.
9 and 30 are formed.

When fixing the seat belt 11 with the seat belt to the seat frame portion 28, the seat under portion 11 is held by hand and the pair of stoppers 20 and 21 of the seat under portion 11 are fixed to the pair of seat frame portions 28. Hole 2
The seat under portion 11 can be fixed to the seat frame portion 28 by positioning and inserting the seat under portions 9 and 30 (see FIG. 2).

On the other hand, a seat under 1 with a seat belt
When removing 1 from the seat frame portion 28, lift the seat under 11 by hand and
By pulling out the pair of stoppers 20 and 21 from the pair of holes 29 and 30 of the seat frame portion 28, the seat under 11 can be removed from the seat frame portion 28. A normal seat under 11 'without a heater wire embedded therein can be detachably fixed to the seat frame portion 28 from which the seat under 11 is removed (see FIG. 5). That is, the seat under 11 with the seat belt can be used as an option.

Next, the operation of this embodiment constructed as described above will be described.

For example, when the driver D rides on the electric wheelchair 1 in cold weather such as winter, the seat under 11
After seating on the seatbelt 12 and wearing the seatbelt 12 integrally mounted on the seatunder 11 through the magic fasteners 24 and 25 around the waist (see FIG. 3), a predetermined switch on the operation box 7 is operated to operate the seatunder 11 In addition, power supply (heating mode) to the heater wires 18 and 23 of the seat belt 12 (heating mode) and running are instructed. As a result, power supply to the heater wires 18 and 23 of the seat under 11 and the seat belt 12 is started, and it is possible to run while heating the lower side of the waist and the waist of the driver D at the same time.

That is, when it is cold in the winter, etc., the heater wire 1
Seat under 1 with seat belt with embedded 8 and 23
1 may be attached to the seat frame portion 28 of the electric wheelchair 1 for use. Also, when it is not too cold, the seat belt 12 may be turned to the rear side of the seat back 10 and wrapped around the seat back 10 via the magic fasteners 24 and 25 (see FIG. 4), or the seat belt 12 may be disposed on both sides of the seat under 11. It may be fixed to the surface via magic fasteners 24 and 25.

On the other hand, for example, when the weather is warm except in winter, the driver D
When the user rides on the electric wheelchair 1 and runs, the seat underbelt 11 with a seat belt is lifted by both hands and the pair of stoppers 20 and 21 of the seat under 11 are paired with the pair of holes 29 and 30 of the seat frame 28. After removing the seat under 11 from the seat frame portion 28 by pulling it out from the seat
It is also possible to attach 1'to the seat frame portion 28 (see FIG. 5) and to ride while sitting on the seat under 11 '.

That is, when the weather is warm except in winter, a normal seat under 11 'having no heater wire embedded therein may be attached to the seat frame portion 28 of the electric wheelchair 1 for use.

As described above, according to this embodiment, the seatbelt 12 is integrally provided on the seat under 11 of the electric wheelchair 1, and the heater wires 18 and 23 are embedded in the seat under 11 and the seat belt 12. Therefore, not only the lower side of the waist of the driver of the electric wheelchair 1 but also the waist can be heated at the same time. Therefore, when the electric wheelchair 1 is used in cold weather such as in the winter, or when a driver with low back pain uses the electric wheelchair 1, the whole waist can be heated, which is preferable. Furthermore, seat under 1
Since the seat material 12 of No. 1 is extended to integrally form the seat belt 12, the seat under 11 and the seat belt 12 can be made compact, and it is also suitable from the external appearance.

Further, according to this embodiment, the heater wire 18 of the seat under 11 and the heater wire 2 of the seat belt 12 are provided.
3 has a structure in which the heater wires 18 and 2 are connected.
The power supply system including the heater power supply connector 27 and the like for supplying power to 3 can be integrated into one, and the number of parts for heater wire power supply can be reduced.

Further, according to the present embodiment, with respect to the seat frame portion 28 of the electric wheelchair 1, the seat belt-equipped seat under 11 in which the heater wires 18 and 23 are embedded, and the normal seat in which the heater wire is not embedded are provided. Since each under 11 'is detachable, if the normal seat under 11' with no heater wire embedded in the seat frame 28 is used in warm weather except in winter, the seat under 11 with seat belt can be used throughout the year. It is possible to prevent deterioration of the heater wires 18 and 23 as compared with the case of continuous use. Furthermore, since a driver who does not need heating can use the normal seat under 11 'throughout the year, there is an advantage that the cost for the optional seat under 11 with seat belt need not be borne.

Further, according to the present embodiment, the seatbelt with seatbelt 11 can be easily attached to and detached from the seat frame portion 28 through the pair of stoppers 20, 21 and the holes 29, 30. Therefore, for example, when the back pain of the driver in the electric wheelchair 1 is aggravated by an external factor such as a change in temperature or humidity, even if the driver fixes the waist with the seat belt 12, a plurality of waists are fixed. It is also possible to lift the seat under 11 seated by the driver and remove it from the electric wheelchair 1 by the attendant.

Further, according to this embodiment, the seat belt 1
When 2 is not used, the seat belt 12 is turned to the rear side of the seat back 10 and wound around the seat back 10 via the magic fasteners 24 and 25, or the seat belt 12 is attached to both side surfaces of the seat under 11 by the magic fastener 24. , 25 so that the seat belt 12 does not get in the way, which is also preferable in terms of appearance.

Next, each modification of this embodiment will be described with reference to FIGS.

FIG. 6 shows a seat under 3 according to the first modification.
FIG. 1 is a diagram showing a configuration in which a seat belt 32 is integrally mounted on the first embodiment, and the difference between the first modified example and the above-described embodiment is that the seat belts 32 are provided at both ends in the longitudinal direction of a normal passenger vehicle. This is that a pair of seat belt attachment / detachment fittings 33 and 34 having the same structure as the belt attachment / detachment parts are provided, respectively, and since the other configurations are the same as those of the above-described embodiment, the illustration of the heater wire and the like is omitted.

More specifically, the seat belt attachment / detachment metal fitting 34 includes an insertion portion 34A and a fixing portion 34B for fixing the insertion portion 34A to the end portion of the seat belt 32. The seat belt attachment / detachment fitting 33 has a hole portion 33 into which the insertion portion 34A of the seat belt attachment / detachment fitting 34 is detachably inserted.
A and the insertion part 34A provided in the hole 33A
A stopper (not shown) that locks in A and a lock release portion 33B that releases the lock of the insertion portion 34A by the stopper in the hole 33A by a pressing operation in the direction of the arrow in the drawing. .

According to the first modified example, when the seat belt 32 is worn on the waist, the seat belt 32 is seated, the seat belt 32 is wound around the waist, and the insertion portion 34A of the seat belt attaching / detaching metal fitting 34 is seated. When the seat belt 32 is inserted into the hole 33A of the belt attachment / detachment fitting 33, the insertion portion 34A is locked in the hole 33A by the stopper, so that the seat belt 32 can be worn on the waist. When removing the seat belt 32 from the waist, push the locking release portion 33B in the direction of the arrow in the figure,
Since the insertion portion 34A is unlocked from the stopper in the hole 33A, the seat belt 32 can be removed from the waist. That is, the seat belt 32 can be easily put on and taken off with the same feeling as when the seat belt of a passenger car is put on and taken off.

FIG. 7 shows a seat under 4 according to a second modification.
FIG. 1 is a diagram showing a configuration in which a seat belt 42 is integrally provided in FIG. 1, and a second modification is different from the above embodiment in that the seat belt 42 has a structure similar to a normal clothes belt at both ends in the longitudinal direction. Metal fitting 43 having a hole insertion member 43A, for example, two hole portions 44A and 44B into which the hole insertion member 43A is inserted
The structure other than this is the same as that of the above-mentioned embodiment, and therefore the heater wire and the like are omitted. In this case, the number of holes in the seat belt 42 is not limited to two.

According to the second modification, when the seat belt 42 is attached to the waist, the seat belt 42 is seated, the seat belt 42 is wound around the waist, and the hole insertion portion 43A of the metal fitting 43 is inserted into the corresponding hole. Seat belt 4
2 can be worn on the waist. When removing the seat belt 42 from the waist, the seat belt 42 can be removed from the waist by removing the hole insertion member 43A from the corresponding hole. That is, the seat belt 32 can be easily put on and taken off with the same feeling as when putting on and taking off the clothing belt.

FIG. 8 shows a seat under 5 according to the third modification.
1 is a diagram showing the configuration of a seat belt 52, and the third modification is different from the above embodiment in that the seat belt 52 is detachably attached to the seat under 51 via mounting screws 53 and 54. In addition, the terminal of the heater wire embedded inside the seat under 51 and the terminal of the heater wire sewn on the back side of the seat belt 52 are paired with a pair of connectors 55,
The heater wire and the like are omitted because it is detachable via 56.

More specifically, the seat portions 52A of the seat belt 52 having the magic fasteners 57 and 58 at both ends in the longitudinal direction are attached to the seat under 51 by inserting the screw portions 53A and 54A of the attachment screws 53 and 54. Possible screw fixing holes 59 and 60 are formed, and a connector 56 connected to a terminal of a heater wire inside the seat belt 52 via a cable 61 is provided.

The rear surface portion 51A of the seat under 51
In the portion of the seat belt 52 corresponding to the screw fixing holes 59, 60, the screw portions 53A of the mounting screws 53, 54,
Screw holes 62, 63 into which 54A is screwed are formed, and a connector 55 connected to a terminal of a heater wire inside the seat under 51 via a cable 64 is provided. In the figure, reference numeral 65 indicates a heater power supply connector, and reference numeral 66 indicates a heater power supply cable connected to the power supply terminals of the heater wire inside the seat under 51 and the seat belt 52.

According to the third modification, when the seat belt 52 is attached to the seat under 51, the seat belt 5
The screw fixing holes 59 and 60 of No. 2 are positioned in the screw holes 62 and 63 of the seat under 51, and the screw portions 53A and 54A of the mounting screws 53 and 54 which are passed through the screw fixing holes 59 and 60 are tightened in the screw holes 62 and 63. Together with the connectors 55, 56
Connect. Accordingly, if power is supplied to the heater wire of the seat under 51 and the seat belt 52 from the battery (not shown) via the heater power supply connector 65, the seat under 51 and the seat belt 52 can be heated. That is, the seat belt 52 can be appropriately attached to and detached from the seat under 51 according to the necessity of heating the waist.

Here, in the third modification, the seat belt 5
Although the magic fasteners 57 and 58 are provided at both longitudinal ends of the seat 2, the invention is not limited to the magic fasteners 57 and 58, and a pair of seat belt attachment / detachment fittings 33, at both longitudinal ends of the seat belt 52. 34 (FIG. 6 above)
Each) or a metal fitting 43, a hole 44A,
44B (see FIG. 7) may be provided.

[0045]

As described above, according to the electric wheelchair seat of the present invention of claim 1, the seat under is detachably mounted on the electric wheelchair and the heater wire is embedded in the seat under. Since the seatbelt is attached to the seat under and the heater wire is embedded inside the seatbelt, not only the lower side of the waist of the driver of the electric wheelchair but also the waistline can be heated at the same time. When the electric wheelchair is used in cold weather such as in the winter, or when the driver who has a backache uses the electric wheelchair, the entire waist can be heated, which is preferable.

According to the electric wheelchair seat of the second aspect of the present invention, since the seatbelt is integrally equipped with the seatunder and the heater wire is continuously laid inside the seatbelt and the seatunder, The seat under and seat belt can be made compact and the appearance is good, and it is possible to reduce the number of parts for power supply by consolidating the power supply system such as cables and connectors for supplying power to the heater wires. It is possible to achieve the effect that

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of a seat under with a seat belt in a present embodiment to which the present invention is applied.

FIG. 2 is an external view showing a configuration of an electric wheelchair equipped with a seatbelt with a seatbelt according to the present embodiment.

FIG. 3 is an external view showing a state in which a seatbelt is worn by a driver in an electric wheelchair in this embodiment.

FIG. 4 is an external view showing a state in which the seat belt of the electric wheelchair according to the present embodiment is wound around the rear surface side of the seat back.

FIG. 5 is an external view showing a configuration of an electric wheelchair equipped with a normal seat under.

FIG. 6 is an explanatory diagram showing a configuration of a seat underbelt with a seat belt according to a first modified example.

FIG. 7 is an explanatory diagram showing a configuration of a seat under with a seat belt according to a second modified example.

FIG. 8 is an explanatory view showing a state where a seat belt is attached to a seat under in a third modified example.

FIG. 9 is an explanatory view showing how the heating seat is attached to the separate seat back and seat under of the electric wheelchair in the conventional example.

FIG. 10 is an explanatory view showing a wiring state of heater wires for a seat back and a seat under which an electric wheelchair is integrated in a conventional example.

FIG. 11 is an explanatory diagram showing a wiring state of a heater wire for a seat under of an electric wheelchair in a conventional example.

[Explanation of symbols]

 1 Electric wheelchair 10 Seat back 11 Seat under 12 Seat belt 18,23 Heater wire

Claims (2)

[Claims] 1. A seat for an electric wheelchair having a seat back for supporting the back of a driver of an electric wheelchair and a seat under for supporting the waist of the driver, wherein the seat under is detachably attached to the electric wheelchair. At the same time, a heater wire is embedded inside the seat under, a seat belt is attached to the seat under, and a heater wire is embedded inside the seat belt. 2. The electric wheelchair according to claim 1, wherein the seat belt is integrally mounted on the seat under, and the heater wire is continuously wired inside the seat belt and the seat under. Sheet.