JP4447930B2 - Grip member for handle with electric heater - Google Patents

Description

  The present invention relates to a handle grip member with an electric heater used for grips of motorcycles, snowmobiles, and the like.

  Synthetic rubber grips for handles of motorcycles, snowmobiles, and the like may have a built-in electric heater that warms the hand grip, as shown in Patent Document 1, for example. The electric heater is electrically connected to the feeder line by soldering or welding, and a sheet-like electric heating element is attached to the surface of the cylindrical synthetic resin core, and the periphery is made of synthetic rubber together with the core. Molded and covered.

JP-A-10-67366

  However, when molding synthetic rubber, there is a problem that the synthetic rubber flows between the core and the sheet-like heating element as the heated and melted synthetic rubber is injected, and the sheet-like heating element is likely to be displaced.

  An object of the present invention is to provide a handle member for an electric heater equipped with an electric heater which eliminates the above-mentioned problems and attaches an electric heating element to the surface of a core body without gaps and accurately positions the mold so that misalignment or the like hardly occurs during molding. There is to do.

The grip member for a handle with an electric heater according to the present invention for achieving the above object is obtained by bonding a sheet-like electric heating element with a heating wire attached to the surface of a core body made of a cylindrical body or a semi-cylindrical body, A grip member for a handle with an electric heater in which a feeding line is connected to the electric heating wire, and a synthetic rubber is injection-molded and coated on the core main body and the sheet-like electric heating element , along the longitudinal direction of the surface of the core main body The both sides of the sheet-like electric heating element are inserted and positioned in a pair of support grooves formed in parallel with each other and inward from the core body, and the core body in the mold accompanying the injection of the synthetic rubber The positional deviation of the sheet-like electric heating element with respect to is regulated .

  According to the grip member for a handle with an electric heater according to the present invention, the electric heating element can be brought into close contact with the core body and can be accurately positioned and bonded, so that misalignment or the like hardly occurs during molding.

  The present invention will be described in detail based on the embodiments shown in the drawings.

  1 is a perspective view of the first embodiment, FIG. 2 is a perspective view of a state in which a core body and an electric heater are separated, and FIG. 3 is an exploded perspective view of the electric heater. The core body 1 that is a skeleton member of the grip is formed into a semi-cylindrical shape by a synthetic resin material, and a ring-shaped portion 2 is provided at the base end of the core body 1 and a ring-shaped portion 3 is provided at the terminal. The electric heater 4 is bonded.

  The electric heater 4 includes a sheet-like electric heating element 5, an electric wire cover 6 and an electric wire 7. Also, heater fixing protrusions 8 are integrally projected outwardly near both ends of the outer surface of the core body 1, and both edges of the sheet-like electric heating element 5 are formed on both outer edges in the longitudinal direction of the core body 1. A pair of support grooves 9 for inserting the first and second support grooves 9 are formed inward of each other. Further, a pinching piece 10 provided with a pair of locking claws 10 a that support the electric wires 7 is disposed oppositely at appropriate positions on the outer surface of the ring-shaped portion 2 at the base end of the core body 1.

  In the sheet-like electric heating element 5, a heating wire 12 is provided on one side of an electric insulating plate 11 made of a synthetic resin, which has an appropriate size and shape suitable for the outer surface of the core body 1 and is bent in a circular arc shape. Is pasted. This heating wire 12 is attached to the electrical insulating plate 11 with, for example, one SUS (stainless steel) foil with an adhesive, and then the entire SUS foil is appropriately punched out by half cutting to remove unnecessary portions, Heating wires 12 made of long and thin electric resistance wires are formed so as to be distributed over almost the entire surface of the electric insulating plate 11 in a series of meandering or zigzag shapes, and are arranged on the side in contact with the outer surface of the core body 1. The thickness of the electrical insulating plate 11 is about 200 μm, and the thickness of the heating wire 12 is about 30 μm.

  Both end portions 12a and 12b of the heating wire 12 are disposed at the base end portion 11a of the electric insulating plate 11, and near the base end portion 11a and the end portion 11b on the opposite side, the heater fixing protrusions of the core body 1 are respectively provided. A fixing through hole 11c into which the child 8 is fitted is formed.

  Furthermore, the electric wire 7 is connected to both ends 12a and 12b of the heating wire 12. The electric wire 7 is provided with a common insulation jacket on the outside of the two power supply wires 7a and 7b provided with an insulation coating. The end of the insulation jacket is peeled off, and each of the power supply wires 7a and 7b is further peeled off. The electrical coating is made by peeling off the insulating coating at the tip of the wire and soldering or welding the exposed core wire to both ends 12a and 12b of the heating wire 12, respectively.

  On the base end portion 11a of the electrical insulating plate 11, a rectangular tube-shaped electric wire cover 6 that fits the ring-shaped portion 2 at the base end of the core body 1 is attached in an arc shape. The electric wire cover 6 is in contact with the inner surface side of the base end portion 11a of the electric insulating plate 11, covers a connecting portion between the electric wire 7 and both end portions 12a and 12b of the heating wire 12, and the outer surface side thereof. It consists of a connection with a narrow cover member 14 having a U-shaped groove covering and covering the electric wire 7.

At one end of the base member 13, an electric wire cradle 13 a that enters into one end of the cover member 14 is integrally formed. On the corresponding surface in the cover member 14 that faces the distal end surface of the electric wire cradle 13 a. Electric wire holding portions 13b and 14a each formed of a plurality of protrusions for holding and fixing the insulation jacket of the electric wire 7 are formed. A pair of engaging recesses 13c are formed on both side surfaces of the wire cradle 13a, and a pair of corresponding engagements are formed on the inner surfaces of both side walls of one end of the cover member 14 corresponding to the pair of engaging recesses 13c. Protrusions 14b are formed, and are fitted and locked together.

  An anchor protrusion insertion hole 11d is formed in the central portion of the base end portion 11a of the electrical insulating plate 11, and a notch portion 11e corresponding to the wire receiving base 13a is provided at a corner of the base end portion 11a. The member 13 is formed with an anchor protrusion 13d to be inserted into the anchor protrusion insertion hole 11d. Further, a positioning through hole 13e into which the heater fixing protrusion 8 of the core body 1 is inserted is formed at a position adjacent to the anchor protrusion 13d of the base member 13.

  When assembling the electric heater 4, the base member 13 is brought into contact with the inner surface side of the base end portion 11 a of the electric insulating plate 11 so as to cover the connection portion of the power supply wires 7 a and 7 b, and the anchor protrusion protruding from the base member 13. 13d is inserted into the anchor protrusion insertion hole 11d of the electric insulating plate 11, the electric wire 7 is positioned on the base member 13, and the cover member 14 is attached thereon. Furthermore, one end portion of the cover member 14 is fitted into the electric wire cradle 13a of the base member 13, and the engagement concave portion 13c and the engagement convex portion 14b are engaged. Thereby, the connection part of the electric wire 7 is covered with the base member 13, and the insulation jacket of the drawn-out electric wire 7 is clamped and fixed to each other by the electric wire holding portions 13b and 14a, and the electric wire 7 is held in the electric wire cover 6. The

  Next, the electric heater 4 configured as described above is attached to the outer surface of the core body 1 using an adhesive. At this time, both edges of the sheet-like electric heating element 5 are inserted into the support grooves 9 of the core body 1 for positioning, and the two fixing through holes 11c of the electric insulating plate 11 and the positioning through holes 13e of the base member 13 are formed. The core body 1 is fitted to the heater fixing protrusion 8. Further, a part of the exposed electric wire 7 is inserted between the engaging claws of the pair of holding pieces 10 of the core body 1 and placed in a fixed position. Thereafter, the tip of the heater fixing protrusion 8 of the core body 1 protruding on the electric heater 4 is melted so that the electric heater 4 does not come out.

  If necessary, an epoxy adhesive or the like is filled between the electric insulating plate 11 and the wire cover 6, between the base member 13 and the cover member 14, and between the electric wire 7 and the pinching pieces 10 of the core body 1. Firmly fix to. Furthermore, synthetic rubber is molded by injection molding on the inner and outer surfaces of the core body 1 with an electric heater assembled by attaching the same half-cylindrical core half part to the cutout part of the semi-cylindrical core body 1.

  In the electric wire cover 6, the engaging concave portion 13 c on the base member 13 side and the engaging convex portion 14 b on the cover member 14 side are engaged, so that the cover member 14 can be stably and firmly fixed to the base member 13 and the electric wire is sandwiched. Since the electric wire 7 can be clamped and fixed by the portions 13b and 14a, and the pin-shaped piece 10 with a pair of locking claws 10a is provided on the ring-shaped portion 2 at the base end of the core body 1, it is pulled out of the electric wire cover 6. The electric wire 7 can be supported stably.

  In particular, by inserting and engaging both edges of the sheet-like electric heating element 5 into the support groove 9 of the core body 1, the gap between the electric heating element 5 and the core body 1 is reduced, and these synthetic rubbers during molding are used. And the position of the electric heating element 5 with respect to the core body 1 is stabilized. Furthermore, since the sheet-like electric heating element 5 is fixed to the outer surface of the core body 1 using the heater fixing protrusion 8, the electric heater 4 can be attached to the outer surface of the core body 1 in a stable state.

  Therefore, when the synthetic rubber mold is applied to the core body 1 with the electric heater 4, the positional deviation of the sheet-like electric heating element 5 with respect to the core body 1 in the mold due to the injection of the heated and melted synthetic rubber is sufficient. Can be avoided.

  At this time, a large number of long and short long grooves 15 are alternately arranged on the inner surface of the core body 1 in order to increase the fixing force with the mold synthetic rubber, as shown in FIG. Thus, the fixing force of the mold synthetic rubber can be increased, and the deviation between the core body 1 and the synthetic rubber can be suppressed.

  In this case, as shown in FIG. 5, a protrusion 16 is further formed in the long groove 15. Thereby, the adhering force of the synthetic rubber to the core body 1 is further improved.

  In the above-described first embodiment, the core body 1 and the sheet-like electric heating element 5 of the electric heater 4 are formed in a semi-cylindrical shape. However, in the second embodiment, as shown in FIG. The electric heating element 5 ′ is formed in a cylindrical shape.

  In this case, a pair of support grooves 9 'are formed adjacent to each other in a cylindrical core body 1' in a back-to-back state, and both edges of the substantially cylindrical electric heating element 5 'are formed in each support groove 9'. Each is inserted and engaged.

  Also in this case, since both edges of the electric heating element 5 ′ are inserted into the support groove 9 ′ of the main body 1 ′, the mold synthetic rubber does not flow from this portion, and the electric heating element 5 ′ is accurate. Fixed in position.

It is a perspective view of the grip member for handles with an electric heater of Example 1. It is a perspective view in the state where a core and an electric heater were separated. It is a perspective view of the state which decomposed | disassembled the electric heater. It is a perspective view of the inner surface of a core main body. It is an expansion perspective view of the long groove provided in the inner surface of a core main part. 10 is a perspective view of a main part of Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Core main body 4 Electric heater 5 Sheet-like electric heating element 6 Electric wire cover 7 Electric wire 8 Heater fixing protrusion 9 Support groove 11 Electric insulation board 11c Fixing through-hole 12 Heating wire

Claims (3)

Adhering a sheet-like electric heating element with a heating wire attached to the surface of a core body consisting of a cylindrical body or a semi-cylindrical body, and connecting a feeding line to the heating wire, the core body, on the sheet-like electric heating element In the grip member for a handle with an electric heater coated with synthetic rubber by injection molding, the sheet-like shape is formed in a pair of support grooves formed in parallel with the longitudinal direction of the surface of the core body and inward from the core body. With an electric heater , wherein both side edges of the electric heating element are inserted and positioned, and the positional deviation of the sheet-like electric heating element with respect to the core body in the mold due to the injection of the synthetic rubber is regulated Grip member for handle.   The grip member for a handle with an electric heater according to claim 1, wherein the support groove is provided at both longitudinal edges of the surface of the core body of the semi-cylindrical body.   The support grooves are provided in two rows back to back along the longitudinal direction of the surface of the cylindrical core body, the electric heating elements are substantially cylindrical, and both edges of the electric heating elements are inserted into the support grooves, respectively. The handle grip member with an electric heater according to claim 1, which is configured as described above.

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