JPS62105386A - Heater with hi-lo changeover switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a heater with a HI-LO changeover switch suitable for use as a winter protection means for a throttle lever provided in three-wheeled, four-wheeled buggies, snowmobiles, etc. It is related to the device.

U Conventional technology In some three-wheeled, four-wheeled buggies, snowmobiles, etc., the accelerator is a set of throttle levers, and the throttle lever is usually placed at a distance below the right handle grip. It can be operated with your thumb while holding the handle grip.

By the way, in vehicles equipped with such a throttle lever set, there are complaints that when driving in cold weather, the thumb that operates the throttle lever is exposed to the cold wind and becomes cold, making it impossible to drive comfortably. .

Therefore, it is recommended to provide a cover with a built-in heater device on the operating part of the throttle lever.

In this case, it is desirable that the heater device be a heater device that can be switched between HI and 70 as appropriate and has a simple configuration since it is applied to the throttle lever.

Conventionally known heater devices with an Hl-LO changeover switch include those in which the changeover switch is an electronic switch (using a transistor or the like) or a mechanical switch.

[Problems to be Solved by the Invention] However, if the HI-LO changeover switch is an electronic switch type, the circuit itself becomes complicated, and if the normally used mechanical switch type is used, the controlled part The switch section has a separate structure, increasing the number of component parts. For this reason, if a heater device employing a conventionally known changeover switch is used to protect the throttle lever from cold, the configuration may become complicated and the cost may increase.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heater device which simplifies the structure of a changeover switch portion and is suitable for use as a measure against cold weather for a throttle lever.

"Means for Solving the Problems" The present invention simplifies the structure by providing the contacts of the changeover switch on the board that has the controlled circuit, thereby making the board itself one of the constituent members of the mechanical switch. It is characterized by

In detail, there are two parallel heating circuits on the board, namely H
I-L O common circuit A and 1-(r exclusive circuit B are formed, and one end of each of these heating circuits A and H can be connected to one terminal of a power supply, and the other end of circuit A is connected to one terminal of a power supply. A contact connected to the other end of circuit A and a contact formed at the other end of circuit B are arranged on the substrate so as to be close to each other, and further, The present invention is characterized in that a H I-LO switching movable contact that connects and disconnects both of these contacts is attached to the substrate so as to be able to slide along the substrate surface.

[Embodiment] Hereinafter, an embodiment in which the heater device of the present invention is applied to a throttle lever cover of a three-wheeled motor vehicle for traveling on rough terrain, a so-called three-wheeled buggy vehicle will be described with reference to the drawings.

First, we will briefly describe the configuration near the throttle lever of a three-wheeled buggy. FIG. 1 is an overall schematic plan view of a three-wheeled buggy, in which reference numeral I indicates a handle pipe for steering the direction of travel, 2 a fuel tank, 3 a seat, 4 a step, and 5
is the front wheel and 6 is the rear wheel. Handle grips 7 are provided at both ends of the handle pipe I, and a brake lever 8 and a throttle lever 9 are attached to the handle grips I.

The throttle operation for controlling the running speed of this three-wheeled buggy is performed by operating the throttle lever 9 located below the right handle grip 7 with your thumb, as shown in Figures 2 and 3. It is done.

The throttle lever 9 extends toward the driver from the throttle lever case IO attached to the handle pipe 1, is rotatably inserted from the lower side of the throttle lever case 10, and is attached to the upper end of the throttle lever case 10. It is formed into an approximately 7-shape consisting of a rotating shaft portion 9a to which the throttle wire 11 is attached and a lever main body 9b extending toward the front side, and an operating portion 9c at the tip of which the thumb rests.
The wall is thick and wide. By pushing the operating surface 9d on the near side of the operating section 9c horizontally forward with your thumb, the engine rotation increases, and when released, the throttle lever 9 returns to the near side (driver side) and the engine speed increases. The structure is such that a so-called throttle operation is performed to lower the engine speed.

As a cover for covering the throttle lever 9 as described above, a throttle lever cover 12 having a built-in heater device according to an embodiment of the present invention will be described with reference to FIGS. 4 to 9.

FIG. 4 shows a side view of a deaf person with the cover 12 placed over the throttle lever 9, as seen from the driver's side, FIG. 5 shows a sectional view of the cover 12 seen from above, and FIG. 6 shows the same cover. 12
1 shows a vertical cross-sectional view of the main parts of the

This throttle lever cover 12 consists of a cover body 13 formed into a substantially rectangular parallelepiped shape, and a lid body (switching switch base).
1.1, and a heater device 15 housed inside the cover body 13.

The cover main body 13 is molded from a soft material such as rubber or flexible plastic, and as shown in FIG. 4, can narrow the gap between the handle grip 7 and the throttle lever 9 to obtain a windproof effect. The handle grip 7 is shaped like a rectangular parallelepiped so that its upper end is above the lower end of the flange 7a of the handle grip 7. As shown in FIG. 5, this cover main body 13 has, in addition to the hole 16 into which the lever 9 is inserted, an operation surface 13a located on the driver's side when the lever 9 is covered. A flat cavity 17 is formed.

The right end of this hollow portion 17 in FIG. 5, that is, the end that is on the tip side when set on the lever 9, is somewhat curved to match the shape of the tip of the lever 9, making the space wider.
Its end face is open.

This opening is sealed with the lid 14 made of hard plastic or the like. This lid body 14 is connected to the Hr-LO switching switch knob 1 of the heater device 15.
The changeover switch knob 18 is attached to the lid 14 so as to be slidable in the vertical direction ((C) and (D) directions in FIG. 6).

Further, a heater device 15 is housed within the cavity 17. This heater device I5 is attached to the inner wall surface of the operation surface side of the cavity 17, and the operation surface 13a of the cover main body 13 is pushed or released.
A heat-generating board 19 that can elastically move in the directions of arrows (a) and (b) along with a; a temperature control element 20 attached to the heat-generating board 19 that also serves as a movable contact for an on/off switch; and a side facing the heat-generating board 19. T-shaped fixed contact 21 for an on/off switch attached to the inner wall surface of the cavity 17
and an operating surface 13a of the cover main body 13 having elasticity.
By pressing , the heat generating board 19 itself is displaced in the direction of the arrow (A), thereby bringing the temperature control element 20 into contact with the fixed contact 21, and disconnecting or disconnecting the current supplied to the heat generating circuit of the heat generating board 19, which will be described later. It is configured to do the following.

In addition, from the end surface of the cover main body 13 on the side of the lever insertion hole I6, both positive and negative cords 22 and 23 are connected to the positive and negative terminals of a power source (not shown), respectively.
is inserted liquid-tightly into the cavity 17, and the tip of the positive cord 22 is connected to the fixed contact 21, and the tip of the negative cord 23 is connected to the heat generating board 19.

Next, the details of the heater device 15 are mainly shown in FIGS.
This will be explained with reference to FIG.

The heat generating board 19 is a main component of the heater device I5.
is a HI-LO circuit consisting of two parallel heating circuits (conductive heating elements) formed of tungsten or the like on a substantially rectangular insulating substrate 24 such as a glass substrate or an epoxy substrate.
A temperature control element 20 in which a common circuit A and a H1 dedicated circuit B are formed, one end of each of these heating circuits A and H is connected to the negative cord 23, and the other end of the heating circuit A is fixed to the center of a board 24. A part of the circuit branched from the other end of circuit A is used as a contact 25, and this contact 25 and a contact 26 formed at the other end of heat generating circuit B are connected to the end opposite to the contact acting part of circuit A. They are fixed as sliding contacts on the substrate 24 in close proximity to each other, and the heat generating substrate 1
9 is attached to the cover main body 13 with the side where the heating circuit A1B is located on the operation surface 13a side.

The slidable side contacts 25.26 for H1-LO switching are arranged at the right end of the heat generating board 19 in FIG.
As shown in FIG. 9, grooves 27.6 are formed on the front and back sides of the base plate 24 in six portions so that a movable contact member, which will be described later, can easily slide thereon.
28 is formed. Note that the contacts 25 and 26 are
It is curved to match the shape of this groove 27. Further, this heat generating board 19 has notches 29 at the top and bottom of the right end of the insulating board 24, and as shown in FIG.
By engaging the upper side of the guide cylinder portion 14a of the lid body 14 made of a hard material, the heat generating board 19 is moved to the cover 12.
It is positioned so that it does not wobble in the vertical direction.

Then, the double wave sliding side contacts 25 and 26 are attached to the right edge of the heat generating board I9 set in the cover main body I3 in this way.
A H I-LO switching movable contact member 30 that connects and disconnects the HI-LO switching contact member 30 is arranged so as to be slidable in the vertical direction along the surface direction of the heat generating board 19 .

The HI-LO switching movable contact member 30, as shown in FIG. A pair of protruding pieces 30b, 30b protruding in a direction perpendicular to 9 and spaced apart vertically are formed by bending from a single metal plate. The movable contact member 30 is moved along the groove 27.28 with the tip of the curved part of the contact body 30a fitted into the groove 27.28 formed in the slidable contact 25.26 portion of the heat generating board 19. It is attached so that it can slide up and down. As shown in FIG. 8, the changeover switch is turned on by sliding the movable contact member 30 downward, and the changeover switch is turned off by sliding it downward.

Further, as shown in FIGS. 5 and 6, the movable contact member 30 is attached to the lid body 14 at a position corresponding to the protruding pieces 30b, 30b attached to the heat generating board I9 in this way. There is an active end of the switch knob 18. In this case, the working end is formed as a pair of elastic locking pieces 18a, 18a inserted from a rectangular elongated hole 14b formed in the lid I4, and the switch knob 18 is inserted in the vertical direction (in FIG. 6). It cannot move in any direction except for being able to slide in (c) (d) direction). Reference numeral 3I denotes a knob member for closing between the switch knob 18 and the lid body 14.

In this way, the sliding direction of the movable contact member 30 and the sliding direction of the switch knob are made to coincide with each other, and between the protruding pieces 30b, 30b of the movable contact member 30, the active end of the switch knob I8 is engaged. The tip of the stopper piece 18a is inserted. Therefore, in this engagement structure, the protruding piece 30b.

The movable contact member 30 having the movable contact member 30b can freely move in the directions of arrows (a) and (b) in FIG. 5 together with the heat generating board 19 while maintaining the engaged state.

In addition, the power generation amount of the heating circuit ASB mentioned above is 2 to 10W.
degree is desirable. Further, as the temperature control element 20, a positive characteristic thermistor (PTC) whose resistance value increases as the temperature rises is used. 60-10
A material whose resistance value changes greatly at 0° C.) is preferable, and is intended to prevent heat generating circuits A and B from overheating. Further, the gap between the temperature control element 20 and the fixed contact 21 is desirably 3Vrm or less; if this is larger than 3u, the operating surface 13a will feel depressed during use, and the operating feeling of the throttle lever 9 will deteriorate. .

Next, the operation of the throttle lever cover 12 configured as described above will be explained.

When installing this cover 12, first install the heater device 1.
Set with the side with 5 facing the operating surface where your thumb will rest.

Then, when the throttle lever 9 with the cover 12 set is pushed with the thumb, the operation surface 13a of the cover body 13 is pressed.
is elastically slightly depressed, and the temperature control element 2 of the heat generating board 19
0 or the fixed contact 21 is touched, and current flows through the heating circuit A1 or both A and B. At this time, the temperature of heat generating circuit A increases slowly and the load on the battery can be kept low, while the temperature of both heat generating circuits A and B rises quickly and a predetermined temperature can be obtained in a short time. Furthermore, when the temperature of the heat generating board 19 rises above a predetermined level, the electrical resistance of the temperature control element 20 increases, and the amount of current flowing through the heat generating circuits A and H decreases. Therefore, the operation surface 13a of the cover 12 is prevented from overheating due to the action of the temperature control element 20, even though the operation surface 13a of the cover 12 is heated immediately when the throttle lever 9 is operated.

According to the cover 12 having such a configuration, when riding a three-wheeled buggy in a cold region, each time the throttle lever 9 is operated, the heating circuits A and B are energized, warming the thumb operating the throttle lever 9 and reducing the heat caused by the cold. It can relieve discomfort. It also prevents numbness in the thumb, which is extremely effective for stable driving.

Moreover, in this cover 12, the throttle lever 9
Since the heating circuits A and H are not energized when they are not being operated, it is possible to prevent wasteful consumption of the power supply due to forgetting to turn off the switch.

Furthermore, in this embodiment, since the temperature control element 20 fixed to the heat generating board 19 is used as one terminal of the on/off switch, the number of members constituting the switch is small, the manufacturing process is simple, and the manufacturing cost is low. .

Furthermore, in this embodiment, the throttle lever cover 1
2 narrows the gap between the handle grip 7 and the throttle lever 9, and the handle grip 7
Since the flange 7a extends above the lower end of the flange 7a, the wind blowing against the thumb operating the throttle lever 9 can be reduced, which has the excellent advantage of providing further protection against the cold.

Next, a case in which a HI-LO switching operation is performed will be described.

First, when setting the LO position, cover 12
Slide the selector switch knob 18 at the right end of the switch downward. Then, the changeover switch is turned on, current flows only through the heat generating circuit A common to HI-LO, and only the heat generating circuit A generates heat.

In addition, when setting to HI Bono Soyon, slide the changeover switch knob 1g upward. Then, the changeover switch turns on, and current flows through both the HI-LO common heat generating circuit A and the HI exclusive heat generating circuit B.
Both circuits A and B generate heat.

In addition, since the operating direction of the changeover switch knob 18 is in the vertical direction orthogonal to the operating direction of the on/off switch,
Operation surface 1 of cover 12 for operating on/off switch
Even if the switch 3a is moved slightly in the directions (a) and (b) in FIG. 5, the effect of the movement is not transmitted to the operation of the switch knob 18. In other words, even if the heating board 19 is moved loosely in order to turn on the heater, the changeover switch side is not affected by the movement, allowing reliable operation. Moreover, on the contrary, the shock when operating the changeover switch is not transmitted to the heater on/off switch side, and reliable operability is ensured.

Note that various modifications can be made to the throttle lever cover 12 of the above embodiment.

For example, as a HI-LO switching movable contact member, the first
It is also possible to use something like the one shown in Figure O. This movable contact member 40 has a contact body 4 which is curved in the same manner as in the previous embodiment.
Projecting pieces 40b, 40b are formed on the back side of 0a. If this contact member 40 is used, the configuration of the active end of the switch knob needs to be adapted accordingly.

Further, as shown in FIG. 1I, the opening at the tip of the cover main body 13' is oriented diagonally toward the assistant side so that the switch knob 18 provided on the footwear 14 faces more toward the driver. It may also be used as a cover 12'.

In the case of this cover 12', the changeover switch knob 18 is
Since it faces the driver side, it has the advantage of being easier to operate.

Further, as a heat generating circuit provided on the heat generating board 19, a planar heating element, which has been increasingly used recently, is used, and a temperature control element 20 is attached to the center of the planar heating element to serve as a switch terminal.
On the other hand, it is also possible to form electrodes on the peripheral edge of the planar heating element and connect this to a power source.In such a case, the cover 1 can be spread more evenly than in the above embodiment.
The operation surface 13a of No. 2 can be heated.

Furthermore, the temperature control element 20 can be attached by changing the position depending on which part of the cover 12 is concerned with the temperature.

U Effect of the Invention J The heater device of the present invention has a changeover switch contact on the board that has the controlled circuit, and uses the board itself as one of the components of the mechanical switch, so the number of parts can be reduced. Moreover, the structure of the changeover switch is extremely simplified.

It is extremely suitable for use as a heating means for a throttle lever cover of a gear wheel, etc., and can provide an inexpensive cover.

[Brief explanation of drawings]

Figures 1 to 3 are explanatory diagrams of a three-wheeled buggy, where Figure 1 is an overall plan view, Figure 2 is a partially enlarged plan view of Figure 1,
Figure 3 is a cross-sectional view taken along the line III-III in Figure 2.
FIG. 9 is a diagram for explaining an embodiment in which the heater device of the present invention is applied to a throttle lever cover, FIG. 4 is a side view showing the cover attached to the lever, and FIG. 6 is a cross-sectional view taken along the line ■-■ in FIG. 5. FIG. 7 is an exploded perspective view showing the main components of the heater device. FIG. 8 is a heat generating board and a movable contact member for a changeover switch. Figure 9 is a side view showing the relationship between IX and tXX in Figure 8.
10 is a perspective view showing a modification of the movable contact member for a changeover switch, and FIG. 1F is a sectional view similar to FIG. 5 showing a modification of the throttle lever cover. 9... Throttle lever I2... Throttle lever cover 14... Fluid (changeover switch base) 15 Heater device I9... Heat generating board 20... Temperature control element (movable contact) 21・・・・・・
Fixed contact 22...Positive cord 23...Minus cord 24...Insulating board 25...Sliding contact 26...Sliding contact

Claims (1)

[Claims] Two parallel heating circuits A and B are formed on the board, one end of each of these heating circuits A and B is configured to be connectable to one terminal of a power source, and the other end of circuit A is connected to the other terminal of the power source. Further, the contact connected to the other end of circuit A and the contact formed at the other end of circuit B are arranged on the substrate in close proximity to each other, and furthermore, these contacts are connected and connected to each other. A heater device with a HI-LO changeover switch, characterized in that a non-connecting HI-LO changeover movable contact is attached to the substrate so as to be able to slide along the surface of the substrate.