JPS62105387A - 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 J] The present invention provides a heater with a HI-LO changeover switch suitable for use as cold protection means for a throttle lever provided in three-wheeled, four-wheeled buggies, snowmobiles, etc. This is about the device.

[Prior Art] 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, if it is possible to cover the throttle lever operation part with a cover containing a built-in heater device, the heater device can be easily turned on and off, and can be switched between HI and LO as appropriate. Since it is applied to the throttle lever, it is desirable that the configuration be simple and that both switches can be operated reliably.

BACKGROUND ART Conventionally known heater devices with a H I-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 that employs a conventionally known changeover switch is used to protect the throttle lever from the cold,
There was a risk that the configuration would become complicated and the cost would increase.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heater device that simplifies the structure of an on-off switch and a changeover switch, and can achieve particularly excellent operability when used as a countermeasure against visitors to the throttle lever.

[Means for Solving the Problems] In the heater device of the present invention, a heating circuit is formed on a substrate that can move in a direction perpendicular to the plane, and a movable contact is fixed on the substrate, and the movable contact Fixed contacts are arranged at intervals in the floating direction of the board so as to face the board, and these contacts constitute an on/off switch for the generator circuit,
Furthermore, a HI-LO switching movable contact for switching HI-LO of the heat generating circuit is disposed on the board so as to be able to slide freely in the direction of the board surface, while a HI-LO switching contact in the vicinity of the board is provided with
A changeover switch base having a changeover switch knob that is slidable in the same direction as the sliding direction of the -L O switching movable contact is provided, and the working end of the switch knob and the HI -L
The present invention is characterized in that the O movable contact is engaged via an engagement means that allows movement of the substrate in the floating direction.

[Example] Hereinafter, an example 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 vehicle, in which reference numeral 1 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 1, and a brake lever 8 and a throttle lever 9 are attached to the handle grip 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 a throttle lever case 10 attached to the handle pipe I. The throttle lever 9 is rotatably inserted from the front lower part of the throttle lever case IO, and has a throttle lever at the upper end. It is formed in an abbreviated shape consisting of a rotating shaft part 9a to which the wire +1 is attached and a lever main body 9b extending toward the front, and the operating part 9C at the tip of which the thumb rests is thick. And it's wide. By pushing the operating surface 9d on the near side of the operating part 9c horizontally forward with your thumb, the engine rotation increases, and when released, the throttle lever 9 returns to the near side (driving side) and the engine rotates. 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 the throttle lever 9 covered with the cover 12 as seen from the driver's side, FIG. 5 shows a sectional view of the cover 12 seen from above, and FIG.
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 (changeover switch base).
14, and a heater device I5 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, the gap between the handle grip 7 and the throttle lever 9 can be determined 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 cavity I7 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 functions as a base for supporting the 1-11-LO switching switch knob 18 of the heater device I5, and the changeover switch knob 18 is vertically (
It is attached so that it can slide freely (in (C) and (D) directions in FIG. 6).

Further, a heater device 15 is housed within the cavity 17. This heater device 15 is attached to the inner wall surface of the operation surface side of the cavity I7, and is operated by pressing and releasing the operation surface 13a of the cover main body 3.
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 this heat generating board 19 which 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 the on/off switch attached to the inner wall surface of the cavity I7
and an operating surface 13a of the cover main body 13 having elasticity.
By pressing , the heat generating board I9 itself is displaced in the direction of the arrow (A), thereby bringing the temperature control cord 20 into contact with the fixed contact 21, and cutting off the current supplied to the heat generating circuit of the heat generating board 19, which will be described later. It is configured to make contact.

In addition, from the end surface of the lever insertion hole I6 side of the cover main body 13, positive and negative side cords 22 and 23 are connected to the positive terminal and negative terminal 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 I9.

Next, the details of the heater device 15 are mainly shown in FIGS.
This will be explained with reference to FIG. 9 □.

A heating board 19 which is a main component of the heater device 15
HI-L has 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 in which a common circuit A and a HI exclusive circuit B are formed, one end of each of these heating circuits A and B is connected to the negative cord 23, and the other end of the heating circuit A is fixed to the center of the board 24. A contact 25 is connected to the end opposite to the contact acting part of circuit A, and a part of the circuit branched from the other end of circuit A is used as a contact 25, and a contact 26 is formed at the other end of heat generating circuit B. are fixed on the board 24 as sliding contacts, with the heat generating circuits A and B placed close to each other. It is attached to the main body 13.

The slidable side contacts 25 and 26 for the HI-LO switching are arranged at the right end of the heat generating board 19 in FIG.
．． As shown in FIG. 9, grooves 2 are formed on the front and back sides of the board 24 at the 26 portion so that the movable contact member described later can easily slide thereon.
7.28 is formed. Note that the contacts 25 and 26
is curved to match the shape of this groove 27. Also,
This heating board 19 has notches 29 below the right end 1 of the insulating board 24, and as shown in FIG.
9, a guide cylinder portion 14 of the lid body 14 made of a hard material.
By engaging one side of a, the heat generating board I9 is positioned within the cover 12 so as not to 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 19 set in the cover main body 13 in this way.
HI-LO switching movable contact member 3 that connects and disconnects
0 are disposed so as to be freely slidable in the vertical direction along the surface direction of the heat generating substrate 19.

The HI-LO switching movable contact member 30, as shown in FIG. A pair of protruding pieces 30b, 30b protruding in a direction orthogonal to the direction perpendicular to 19 and vertically spaced apart 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 I9. 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 upward, and the changeover switch is turned off by sliding it downward.

Further, as shown in FIGS. 5 and 6, in the positions corresponding to the protruding pieces 30b, 30b of the movable contact member 30 attached to the heat generating board 19 in this way, there are attached to the lid body I4. There is an active end of the switch knob I8. In this case, the working end is formed as a pair of elastic locking pieces 18aS 18a inserted from a rectangular elongated hole 14b formed in the lid body 14, and the switch knob 18 is
It cannot move in any direction except for being able to slide in (c) and (d) directions in the figure. A seal member 31 seals between the switch knob 18 and the lid I4.

In this way, the sliding direction of the movable contact member 30 and the sliding direction of the switch 7 knob are made to match, and between the protruding pieces 30b, 30b of the movable contact member 30,
The tip of the locking piece 18a, which is the active end of the switch knob 18, is inserted. Therefore, in this engagement structure, the movable contact member 30 that grows the protruding pieces 30b130b 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. .

Note that the heat generation amount of the heat generating circuits A and B described above is desirably about 2 to 10 W. Moreover, as the temperature control element 20,
A positive temperature coefficient thermistor whose resistance increases as the temperature rises (
PTC) is used, specifically barium titanate,
Silicon yarn PTC, etc., in a relatively low temperature range (60~loo
It is preferable that the resistance value changes significantly in 'c), and is intended to prevent overheating of heat generating circuits A and B. Further, the gap between the temperature control element 20 and the fixed contact 2I is desirably 3 mm or less; if this is larger than 3 ytm, 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 forward with the thumb, the operation surface 13a of the cover body 13 is pressed forward.
is elastically slightly depressed, and the temperature control element 2 of the heat generating board I9
0 touches the fixed contact 21, and current flows through the heating circuit A 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, due to the action of the temperature control element 20, the operation surface 13a of force/<-12 is prevented from overheating even though it is immediately heated 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 cooling it. It can eliminate the discomfort caused by 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 heat generating circuits A and B 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 it extends above the lower end of the flange 7a of the throttle lever 9, the wind blowing against the thumb operating the throttle lever 9 can be reduced, thereby providing an excellent advantage of 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 off, current flows only to the heat generating circuit A common to HI-LO, and only the heat generating circuit A generates heat.

Further, when setting to HI position, slide the changeover switch knob 18 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 operation direction of the changeover switch knob I8 is in the vertical direction orthogonal to the operation 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 heat generating board 19 is moved loosely in order to turn on the heater, the changeover switch side is not affected by the movement, so reliable operation can be achieved. 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 θ
The one shown in the figure may also be used. This movable contact member 40 has a contact body 40 that is curved as in the previous embodiment.
Projecting pieces 40b, 40b are formed on the back side of a. When using this contact member 40, the configuration of the working end of the switch knob must also correspond to this.

In addition, as shown in FIG. 11, the opening at the tip of the cover body 13' is oriented diagonally toward the front so that the switch knob 18 provided on the lid body 14 faces more toward the driver. It would be nice to have a cover of 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 possible to form electrodes on the peripheral edge of the planar heating element and connect it 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 mounting position of the temperature control element 20 can be changed depending on which part of the cover 12 is important in temperature.

[Effects of the Invention] The heater device of the present invention has a changeover switch contact on the board that has the controlled circuit, and uses the board as one of the components of the mechanical switch, so the number of parts is reduced. Moreover, the structure of the changeover switch is extremely simplified. Further, since the substrates are made to be free-floating and movable contacts are formed on the substrates to serve as the operating portion of the on-off switch, the construction of the on-off switch itself is extremely simplified.

Furthermore, an I
-T I -L O switching movable contact is disposed so as to be slidable in the direction of the board surface, while near the board, the Hr -r,
A changeover switch base having a changeover switch knob that is slidable in the same direction as the sliding direction of the switching movable contact is provided, and the working end of the switch knob and the HI-LO movable contact are connected in the same direction as the sliding direction of the board. Since the structure is such that they are engaged through an engagement means that allows movement, the on/off switch operation and the changeover switch operation can be performed satisfactorily and reliably without affecting each other. Therefore, the operability is extremely excellent.

Shita force is extremely suitable for use as a heating means for a cover for a throttle lever of a three-wheeled buggy, 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,
3 is a sectional view taken along the line III-II in FIG. 2. FIGS. 4 to 9 are views for explaining an embodiment in which the heater device of the present invention is applied to a throttle lever cover. The figure is a side view showing the cover attached to the lever, Figure 5 is a sectional view seen from above, Figure 6 is a sectional view taken along the line ■-■ in Figure 5, and Figure 7 is the main parts of the heater device. FIG. 8 is an exploded perspective view showing the configuration, FIG. 8 is a side view showing the relationship between the heat generating board and the movable contact part #0 for the switching switch, and FIG. 9 is IX-IX in FIG. 8.
10 is a perspective view showing a modification of the movable contact member for a changeover switch, and FIG. 11 is a sectional view similar to FIG. 5 showing a modification of the throttle lever cover. 9... Throttle lever 12... Throttle lever cover 14...
Lid body (changeover switch base) 15... Heater device I8... Changeover switch knob 18b... Elastic locking piece (working end) 19 ・°・
... Heat generating board 20 ... Temperature control element (movable contact) 2I ...
...Fixed contact 22...Plus cord 23...Minus cord 24...Insulating substrate 25...Wave phase moving contact 26...Sliding contact 3o, , io...Switching movable contact member 30a...
・Contact body 30b...Protruding piece A...I-11-LO common heating circuit B...
I-I T dedicated heating circuit Figure 5

Claims (1)

[Claims] A heating circuit is formed on a board that can move in a direction perpendicular to the plane, a movable contact is fixed on the board, and fixed contacts are placed at intervals in the direction of the board's movement to face the movable contact. Both of these contacts constitute an on/off switch for the heating circuit, and further, a HI-LO switching movable contact for switching the heating circuit from HI to LO is disposed on the substrate so as to be slidable in the direction of the substrate surface, On the other hand, a changeover switch base having a changeover switch knob that is slidable in the same direction as the sliding direction of the HI-LO switching movable contact is disposed near the substrate, and the active end of the switch knob and the HI
-HI-L characterized in that the LO movable contact is engaged via an engagement means that allows movement of the substrate in the floating direction.
Heater device with O changeover switch.