JP2535126Y2 - Handle grip with built-in heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a handle grip with a built-in heater used for a T-shaped or Y-shaped handle of a motorcycle, a motorbike, a three-wheel buggy, a snowmobile, or the like.

(Prior art)

2. Description of the Related Art Conventionally, motorcycles have been exposed to wind and rain, so that they are extremely cold in winter and the like, which hinders driving. Therefore, recently, a heater is incorporated in the grip of the handle, and the grip is heated as needed.

FIG. 10 is a cross-sectional view of an example of this kind of grip with a built-in heater, which has already been filed. In this figure, reference numeral 1 denotes a throttle grip attached to a handle pipe 2. This throttle grip 1 is composed of a synthetic resin throttle pipe 1a and a rubber or synthetic resin grip body 1b integrated with the outer periphery of the handle pipe. It has a structure rotatably attached to the pipe 2. 3 is the grip body
1b is a flexible printed wiring board (hereinafter, simply referred to as an FPC heater) which is a thin plate heater forming a heater circuit. The FPC heater 3 has a base film 4 made of a polyester film, a polyimide film or the like. A heater circuit is formed by forming a conductive foil 5 of aluminum or the like, and an overlay film 6 is coated thereon. Reference numeral 3a is a code on the land portion of the FPC heater 3 is a feed line that is connected by soldering welding, etc., reference numeral 1b ₂ is an area for the derivation of the grip body of code 3a. Code 3a
Is the switch box 8 fixed to the handle pipe 2
The opening extends from the opening 8a to the outside of the box, and is connected to a power supply cord (not shown) through a switch 7 provided in the switch box 8. The cord 3a is extended in the switch box 8 so as to be sufficiently slack so as not to hinder the turning operation of the throttle grip 1, and is folded back and connected to the switch 7. Note that reference numeral 1b ₁
Is a cork-containing rubber layer formed inside the FPC heater of the grip body 1b. The grip is efficiently loosened by suppressing heat radiation from the FPC heater 3 to the metal handle pipe 2.

[Issues to be solved]

However, in the prior art described above, every time the throttle grip 1 is rotated, the code 3a is
The deflection of the grip body through the cord 3a by connecting to the switch box 8, especially the bending,
Load is applied to 1b _2. However, since the grip body 1b is generally made of soft rubber in consideration of the ease of gripping and the like, the grip body 1b becomes even softer when warmed (when the heater is turned on). Therefore, can not securely hold the cord 3a CODE derivation unit area 1b _2, code 3a is upset significantly, FP
There is a problem in that stress may concentrate at the boundary between the C heater 3 and the cord 3a and cause a disconnection.

The present invention has been made in view of the above-described problems, and its purpose is to firmly hold a lead portion of a power supply path to a thin plate heater such as a cord from a grip body, and at a boundary between the thin plate heater and the power supply line. The object of the present invention is to provide a handle grip with a built-in heater that does not cause disconnection.

[Means for solving the problem]

In order to achieve the above object, in a handle grip with a built-in heater according to the present invention, a thin plate-shaped heater is embedded in a tubular grip body made of an elastic material such as rubber attached to a handle pipe or a throttle pipe. In the handle grip with a built-in heater, in which a power supply path to the thin plate heater is led out of the grip main body, a region where the power supply path of the grip main body is led out is made of a material having higher hardness than other regions of the grip main body. To be formed.

Further, in claim (2), the lead-out portion of the power supply path is pressed and held in the direction toward the central axis of the grip main body by a C-ring-shaped elastic gripping member mounted on the outer periphery of the grip main body.

Further, in the present invention, the vicinity of the connection portion between the power supply path and the heater is attached to the outer periphery of the grip body and is embedded in the grip body so as to be integrated with the central axis of the grip body by a C-ring-shaped elastic gripping member. It was designed to be pressed and held in the direction toward it.

[Action]

According to claim (1), since the area of the grip main body from which the power supply path extends is formed of a material having a higher hardness than the elastic material forming most of the area of the grip main body, the load acting on the power supply path is small. The load transmitted to the boundary between the power supply path and the heater is reduced because the power supply path is held in the area where the power supply path of the grip body is led out (the grip body side area surrounding the power supply path lead-out portion).

According to claim (2), the lead-out portion of the power supply path from the grip body is pressed and held in the direction toward the central axis of the grip body by the C-ring-shaped elastic gripping member mounted on the outer periphery of the grip body. Is carried by the gripping member, and the load transmitted at the boundary between the power supply path and the heater is reduced.

According to claim (3), the vicinity of the connection portion between the power supply path and the heater is directed to the center axis of the grip main body by a C-ring-shaped elastic gripping member mounted on the outer periphery of the grip main body and embedded and integrated in the grip main body. The load acting on the power supply path is held by the gripping member and an elastic material layer such as rubber covering the gripping member, and the load transmitted to the boundary between the power supply path and the heater is reduced. It will be.

Further, the C-ring-shaped elastic gripping member has a shape substantially following the circumferential direction of the grip main body, and in claim (2), a lead-out portion of the power supply path from the clip main body is provided. Since the structure is such that the vicinity of the connection portion with the heater is pressed and held in the direction toward the center axis of the grip body, the gripping member may be attached to the outer periphery of the grip body as in claim (2). Even if the gripping member is attached to the outer periphery of the grip body and the gripping member is buried and integrated in the grip body as in 3), the power supply path lead-out area does not particularly expand outward and the grip is enlarged. is not.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 to 7 show a throttle grip with a built-in heater of a motorcycle according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view of the throttle grip with a built-in heater, and FIG. FIG. 3 is a longitudinal sectional view, and FIG.
FIG. 4 is a sectional view taken along the line III-III, and FIG.
5, FIG. 5 is a wiring diagram showing the FPC heater in a developed state, and FIGS. 6 and 7 are perspective views showing a state in which the FPC heater is wound around the inner layer portion of the outer cylinder.

In these figures, reference numeral 11 denotes a synthetic resin throttle pipe having a large number of pores, which is formed by foaming polypropylene or polyacetal, and has a structure in which countless pores are dispersed in the tissue. I have. Using the throttle pipe 11 as an inner cylinder, a rubber outer cylinder 12, which is a grip body, is formed integrally with the throttle pipe 11 around the throttle pipe 11, or is pressed into the outer periphery of the throttle pipe 11 to form the throttle grip 10. It is configured. Reference numeral 11a is a ridge on the throttle pipe side,
The reference numeral 12c denotes a concave streak portion on the outer cylinder body side, where the both 11a and 12c are fitted to prevent the throttle pipe 11 and the outer cylinder body 12 from rotating. An FPC heater 20 is wound and embedded in the outer cylinder 12, and the throttle pipe 11 is rotatably fitted to the metal handle pipe 2. A non-slip ridge 12d is formed on the outer surface of the outer cylinder 12 so as to extend in the longitudinal direction. F
As shown in FIG. 3, the PC heater 20 is wound and buried over substantially a half area of the outer cylinder 12 in the circumferential direction, and the outer cylinder 12 is heated by heat generated by the FPC heater 20. . The inner region of the FPC heater 20 of the outer cylinder 12 is an outer cylinder inner layer portion 12a made of cork-containing rubber, and the inner layer portion 12a is superior in heat insulation compared to the outer cylinder outer layer portion 12b not containing cork. . Therefore, the heat of the FPC heater 20 is insulated by the outer cylinder inner layer portion 12a made of cork-containing rubber, and is further insulated by the air layer in the pores of the throttle pipe 11 constituting the inner cylinder, The amount of heat radiation to the handle pipe 2 is very small. Note that the outer cylinder body outer layer portion 12b forms substantially the entire peripheral region of the outer cylinder body, and is formed of a somewhat soft rubber in order to improve the gripping feeling when grasped by hand.

Reference numeral 10a denotes a grip area gripped by the right hand, and a wire connection to which a throttle wire 40 (see FIG. 1) is connected to an inner end (left side in FIG. 2) of the grip 10 (left end of the throttle pipe 11). A portion 10b is formed. Code 41
Is an engagement groove of the throttle wire 40. An FPC heater 2 is provided between the wire connecting portion 10b and the grip region 10a.
A power supply path circling region 10c is formed around the cord 21, which is a power supply path for power supply connection of 0. Reference numeral 14 denotes a container-shaped metal end cap, which is screwed by a screw 16 to a vibration-preventing balancer 17 of a handle fixed to an end of the handle pipe 2.

Reference numeral 21 denotes a cord that is a power supply path that is solder-welded to a land portion of the FPC heater 20 and extends to the outside of the outer cylindrical body 12, and a part of the power supply path surrounding area 10c bulges outward in the radial direction. The code 21 is derived from the raised portion 10e. Reference numeral 25 denotes a connection portion between the FPC heater 20 and the cord 21, and a code lead-out area (bulge portion) 10 of the outer cylinder 12.
e is formed of a rubber having a higher hardness than the rubber forming the outer cylinder body outer layer portion 12b, which is another area of the outer cylinder body 12, in order to ensure the fixing and holding of the cord lead portion. That is, since the cord lead-out area (the outer cylindrical body area surrounding the code lead-out portion) 10e has high hardness, the heater-side end 23 of the cord 21 is firmly held. Therefore, with throttle operation,
Even if the cord 21 comes into contact with the power supply path casing 64 as shown by the imaginary line in FIG.
This external force is received by the cord lead-out area 10e, so that concentration of stress on the connecting portion 25, which is a boundary between the FPC heater 20 and the cord 21, is avoided, and disconnection of the connecting portion 25 is prevented. The cord 21 is provided in the power supply path casing 60 in a direction parallel to the extending direction of the FPC heater 20 and in the power supply path circling region 10c of the outer cylinder 12 in the grip rotation direction in which the throttle is opened.
Around the opening 65 of the casing 60,
It extends out of the casing from the opening 65 and is connected to the connector 30a. To this connector 30a, a connector 30b provided at an end of a power supply cord 34 extending from the battery 24 as a power supply is connected. Reference numeral 10d denotes a large-diameter flange formed at the inner end of the grip region 10a.

Reference numeral 50 denotes a throttle fixed to the handle pipe 2 by sandwiching the handle pipe 2 and fastening a screw (reference numeral 53 is a screw) to each other so as to rotatably house the wire connecting portion 10b therein. A casing (reference numeral 52 is an upper throttle casing, 54 is a lower throttle casing). Reference numeral 55 (see FIG. 1) is a concave portion for accommodating the wire connecting portion. Reference numeral 60 (see FIG. 4) denotes a power supply path casing integrally formed on the side surfaces of the upper throttle casing 52 and the lower casing 54 and stores the code 21 (reference numeral 62 denotes an upper power supply path casing, reference numeral 64 denotes a lower side). (Feeding path casing). The upper power supply path casing 62 has a semi-cylindrical container shape having substantially the same size as the upper throttle casing 52, and the lower power supply path casing 64 has a container shape bulging downward so as to be able to cope with the slack state of the cord 21. I have. Reference numeral 56 denotes a boss formed with a screw insertion hole 57, and a claw 5 is provided on the lower casing 54, 64 on the side opposite to the screw fastening side.
Projections 4a and 64a are formed. On the other hand, upper casing 5
Engagement holes 52a and 62a with which the claws 54a and 64a can engage are formed in the holes 2 and 62, respectively. By engaging the claws 54a, 64a with the engagement holes 52a, 62a, one side of the upper and lower casings is prevented from falling off, so that the upper and lower casings can be easily fastened by one screw 53. Vertical ribs 63 are formed on both sides and between the engaging holes 52a, 62a so as to project therefrom.
The strength around a is secured. An opening 65 for extending the power supply path formed by the bonded rubber bushing 66 (66a, 66b) is formed in the mating portion of the upper and lower power supply path casings 62, 64, and the upper and lower casings are screwed. Then, the cord 21 is held by the bushing 66.

Therefore, even if a force is applied to push the cord 21 out of the casing due to the throttle operation, or if the cord 21 is pulled from the outside of the casing, the cord 21 slides outside the casing. Therefore, the length of the cord 21 extending to the outside of the casing can be reduced to a minimum length which does not hinder the operation such as the throttle operation. Further, the cord 21 in the casings 62 and 64 is deformed as shown by the imaginary line in FIG. 4 with the throttle operation. However, since the cord 21 does not have a portion such as a folded portion where there is a possibility of stress concentration, the cord 21 accompanies the deformation. The resulting bending stress is distributed throughout the cord 21. Therefore, the cord 21 has a structure that is not easily damaged by fatigue, that is, a structure that is less likely to be disconnected.

Further, a water drain hole 67 is formed on the lower surface of the lower casing 64. Even if water enters the casing 64, the water is discharged from the hole 67 to the outside of the casing. There is no problem such as the frozen water blocking the throttle operation. In particular, the size of the hole 67 is set to a size that does not hinder the falling of water due to surface tension.

As shown in FIGS. 1, 2, and 4, the throttle grip 10 is rotatably mounted on the handle pipe 2 with the wire connecting portion 10b of the throttle pipe 11 supported by the throttle casing 50. However, the large-diameter flange portion 10d is connected to the side surfaces 62b and 64b of the power supply path casing 60.
It is arranged close to.

As shown in FIG. 10, the basic structure of the FPC constituting the FPC heater 20 is that a conductive foil (copper foil) 5 is
And a conventionally known laminated structure sandwiched by the overlay film 6. As a method of embedding the FPC heater 20 in the outer cylinder 12 and integrating it as a grip, the FPC heater 20 is wound around the outer circumference of the outer cylinder inner layer 12a in a semi-vulcanized state, and the semi-vulcanized The outer cylinder body outer layer portion 12b in the state is formed, cured, and integrated as a grip. The method of manufacturing the grip with a built-in FPC heater is described in detail in Japanese Utility Model Application No. Sho 62-150228, and the detailed description is omitted.

As shown in FIG. 5, the FPC heater 20 has first and second heater circuits 20A and 20B in which copper foil strips are formed in a meandering shape and connected in series. On one side edge, three lands COM, RH, and LH to which cords 21 (21a, 21b) serving as power supply paths to the FPC heater are connected by solder welding or the like are formed. A heater circuit 20A, 20B is connected in series between the lands COM and LH to form a high-resistance heater circuit (a circuit that generates a large amount of heat because the current is adjusted to be constant), and a heater circuit 20B between the lands COM and RH.
It is a low-resistance heater circuit (a circuit that generates a small amount of heat because the current is adjusted to be constant), the land COM is a common connection point when connecting the cord to the FPC heater, and the land RH is the FPC heater 20 The right side, that is, the cord connection point when used on the throttle grip side, the land LH is on the left side, that is,
The figure shows the cord connection point when the FPC heater is used on the non-throttle grip side. In this embodiment, since it is on the throttle grip side, one of the cords 21a has a land C
The other end 21b of the cord 21 is connected to the land RH. That is, on the right side (throttle grip side),
Since the grip body is fitted to the synthetic resin throttle pipe 11, heat insulation is better than that of the left (non-throttle grip side) grip body directly fitted to the metal handle pipe. Therefore, on the throttle grip side, the land RH, which is a low-resistance heater circuit with a small heat value, is
COM is the code connection point, and on the non-throttle grip side, the land LH, which is a high resistance heater circuit with a large amount of heat generation,
COM is the code connection point. Thus, the FPC heater 20
Can be used on both the throttle grip side and the non-throttle grip side, and the degree of warming of the grip body on both sides is uniform.
A connector 30a is provided at the end of the cord 21, the connector 30b is engaged, and the connector 30b is connected to the battery 24 via the switch 22.

The copper foil strips of the heater circuits 20A and 20B constituting the FPC heater 20 are formed in a circuit pattern extending in the grip axis direction (the left-right direction in FIG. 5). Therefore, it is easy to bend the FPC heater 20 in the grip circumferential direction (the vertical direction in FIG. 5), and it is easy to wind the FPC heater 20 around the outer periphery of the outer cylindrical body layer portion 12a during the manufacture of the heater built-in grip. Has become.

A pair of positioning engagement holes 28 are formed on the side of the FPC heater 20 where the cord 21 extends (the left side in FIG. 5). On the other hand, on the outer peripheral surface 13 of the outer cylindrical body layer portion 12a formed in a semi-cylindrical shape in advance, as shown in FIG. Occasionally, the FPC heater
20 is to be positioned. During molding, a molding pressure is applied to the heater 20 in the direction of arrow A in FIG.
Since the engagement hole 28 and the engagement protrusion 12e are engaged, the FPC heater 20 does not shift in the A direction with respect to the outer peripheral surface 13 of the outer cylinder inner layer portion. Reference numeral 12f denotes a pair of stoppers provided on the outer surface 13 of the inner layer portion of the outer cylinder, which are aligned with the width of the FPC heater in the winding direction (the direction B in FIG. 6). This prevents the heater 40 from shifting in the direction of arrow B in FIG.

Also, as shown in FIG. 7, the slip prevention projection shown in FIG.
Instead of 12f, an engagement hole 29 is formed on the side opposite to the side where the cord 21 of the FPC heater 20 extends, and an engagement protrusion 12g matching the FPC side engagement hole 29 is formed on the outer peripheral surface of the inner layer portion of the outer cylinder. 13 may be formed so as to protrude.

FIG. 8 is a cross-sectional view of a throttle grip with a built-in heater according to a second embodiment of the present invention.

In this embodiment, the area 10 from which the code of the outer cylinder 12 is derived
The entire outer cylinder including e is made of soft rubber, and a C-ring 39 as a cord gripping member is mounted in the power supply path circling region 10c. The C-ring 39 is made of resin or metal, and is fixed with an adhesive at a position where the leading end of the cord 21 from the power supply lead-out region 10e is sandwiched between the ring ends of the C-ring. That is, the heater-side end 23 of the cord 21 including the lead-out portion from the feeder lead-out region 10e is located at the C-side.
Even if the cord 21 is shaken, the concentration of the stress on the cord / heater connecting portion 25 which is a boundary between the heater 20 and the cord 21 is avoided, and the cord / heater connection is prevented. Disconnection in the section 25 is prevented. The other parts are the same as those in the first embodiment, and the description thereof will be omitted by retaining the same reference numerals.

FIG. 9 is a transverse sectional view of a throttle grip with a built-in heater according to a third embodiment of the present invention.

In this embodiment, a C-ring 39A as a cord gripping member covers the connection portion 25 between the cord and the FPC heater, and the C-ring 3
The structure is such that the ring end of 9A is buried in the outer tubular body 12 while pressing the heater-side end 23 of the cord. That is,
The heater-side end 23 of the cord is firmly gripped by the compressive stress (initial stress) σ acting radially inward due to the elasticity of the C-ring 39. The concentration of stress is avoided, and the occurrence of disconnection at the connection portion is prevented.

Although not shown, a combination of the first embodiment and the second embodiment, or a combination of the first and third embodiments is naturally conceivable as still another embodiment. . That is, while increasing the hardness of the power supply path lead-out area 10e, the C-ring 39 or 39A holding the cord 21 at the same time.
Is provided, it is possible to further protect the connection portion 25 which is a boundary between the heater 20 and the cord 21.

In each of the above-described embodiments, the thin plate heater wound and embedded in the grip is constituted by the FPC heater in any case, but the thin plate heater is not limited to the FPC heater. In other words, other examples of the thin plate heater include a laminated structure containing carbon fibers in which cloth-like carbon fibers forming a heater circuit are laminated in a sandwich shape with a resin film, and a carbon printed circuit forming the heater circuit is sandwiched with a resin film. And a structure in which a thin metal plate of stainless steel or the like, which is punched to form a heater circuit, is laminated in a sandwich shape with a resin film.

In the above-described embodiment, the power supply path to the FPC heater 20 is configured by the cord 21, but the power supply path may be a strip-shaped FPC heater instead of the cord 21. In addition, an integrated FPC with a heater and power supply line that extends a belt-shaped FPC from the FPC heater 20
It may be.

Further, in the above-described embodiment, the description has been given by taking as an example a throttle grip for a motorcycle rotatably mounted on a handle pipe of a motorcycle. However, a handle grip (non-throttle grip) directly mounted on and integrated with the handle pipe. The present invention is not limited to a handle grip for a motorcycle, and is a handle attached to a bifurcated handle such as a T-shaped or Y-shaped handle of a motorbike, a three-wheeled buggy, a snowmobile, or the like. Can be widely applied to grips.

[Effect of the invention]

As is apparent from the above description, according to the handle grip with a built-in heater according to the present invention, in claim (1), the heater-side end of the power supply path is more firmly surrounded by a region made of a high-hardness elastic body. In the second and third aspects, the heater-side end of the power supply path is firmly gripped by the C-ring-shaped elastic gripping member. Concentration of stress on the connection portion, which is the boundary of the power supply path, is avoided, and a handle grip with a built-in heater that is hardly disconnected at the connection portion can be obtained.

In particular, in the claims (2) and (3), the C-ring-like elastic gripping member has a shape substantially following the circumferential direction of the grip body, and the heater-side end of the power supply path is centered on the center axis of the grip body by the power supply path gripping member. , The power supply path lead-out area of the grip body provided with the gripping member does not particularly bulge outward, and the grip does not increase in size.

[Brief description of the drawings]

1 is an exploded perspective view of a throttle grip with a built-in heater according to a first embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the grip, and FIG. 3 is a sectional view taken along line III-III shown in FIG. FIG. 4 is a sectional view taken along the line IV-IV shown in FIG.
The figure is a development view of the FPC heater, and FIGS.
A perspective view showing a state in which the PC heater is wound around the inner layer portion of the outer cylinder,
FIG. 8 is a cross-sectional view of a main part of a throttle grip with a built-in heater according to a second embodiment of the present invention, and FIG. 9 is a third embodiment of the present invention.
FIG. 10 is a cross-sectional view of a main part of a throttle grip with a built-in heater, which is an embodiment of the present invention. FIG. 2 ... Handle pipe, 10 ... Throttle grip, 10
e: area where the power supply path of the grip body is led out, 11 ... throttle pipe, 12 ... outer cylinder body which is the grip body, 20
…… FPC heater that is a thin plate heater, 21 …… Cord that is a power supply path, 23 …… Header side end of the cord that is a lead part of the cord, 25 …… Connection part between the FPC heater and the cord, 39,39A
... C-ring as a gripping member.

Claims (3)

(57) [Scope of request for utility model registration] A thin plate heater is embedded in a cylindrical grip body made of an elastic material such as rubber attached to a handle pipe or a throttle pipe, and a power supply path to the thin plate heater is led out of the grip body. A handle grip with a built-in heater, wherein a region of the grip body from which a power supply path extends is formed of a material having a higher hardness than other regions of the grip body. 2. A thin plate-shaped heater is embedded in a cylindrical grip body made of an elastic material such as rubber attached to a handle pipe or a throttle pipe, and a power supply path to the thin plate heater is led out of the grip body. A handle grip with a built-in heater, wherein a C-ring-shaped elastic gripping member that presses and holds a lead-out portion of a power supply path in a direction toward a central axis of the grip body is mounted on an outer periphery of the grip body. Handle grip. 3. A thin plate-shaped heater is embedded in a cylindrical grip body made of an elastic material such as rubber attached to a handle pipe or a throttle pipe, and a power supply path to the thin plate heater is led out of the grip body. In the handle grip with a built-in heater, a C-ring-shaped elastic gripping member that presses and holds the vicinity of a connection portion of the power supply path with the heater in a direction toward a central axis of the grip main body is attached to an outer periphery of the grip main body. A handle grip with a built-in heater, wherein a C-ring-shaped elastic gripping member is embedded and integrated in the grip body.