JPH042108Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a horn part attached to a steering wheel, more specifically, a horn part that is floating with a slight clearance from the steering wheel so as to be pressable, and the part is pressed. This invention relates to the improvement of a horn pat that is installed so that a horn can be sounded.

BACKGROUND TECHNOLOGY In general, a horn part is floating so that it can be moved forward and backward with a slight stroke relative to the steering wheel, and is provided so that the horn can be sounded by pressing the part. There is.

More specifically, as shown in the drawing of FIG. 4, a plurality of guide pins b, b, b, b are integrally provided downwardly from the back side of a part body part a formed in an arbitrary shape, and each In order to insert and insert the guide pin b into the guide hole provided on the steering wheel side so that it can move forward and backward over a certain stroke, a small diameter stepped portion is provided at the opening of the guide hole, and each guide pin b
By providing a conical head d with a vertical groove c at the tip thereof, and forcibly fitting the conical head d into the small diameter stepped portion through elastic deformation in the vertical groove c. , is provided so that advancing and retracting action and retaining action can be obtained through engagement between the small diameter stepped portion and the conical head d.

Problems to be Solved by the Invention However, in the case of the horn part with the above structure, the structure of the mold is complicated, and its durability is significantly impaired, and the horn body part is not easily damaged by twisting, impact, etc. There is a problem in that when an overload is applied, the overload is structurally likely to concentrate on the guide pin, that is, the guide pin is likely to break.

Therefore, as a means to prevent breakage of the guide pin, attempts have been made to use high-quality synthetic resin with excellent strength and elasticity as the material; By using synthetic resin as a material, the problem of easy breakage of guide pins can be solved, but the problem of the structure of the mold and its durability still cannot be solved. A new problem arises in that the cost becomes extremely high.

That is, horn parts are usually integrally molded by injection molding, but when molding horn parts by molding in this way, it is unreasonable that the entire horn part must be molded using high-quality synthetic resin. It will become.

The present invention is an attempt to improve the above-mentioned problems, and the purpose of the present invention is to obtain an inexpensive and superior horn part.

The specific means and effects for solving the above problems are as follows.

Means for solving the problem: The part body and the guide pin are formed separately. In other words, the guide pin is made of unrecycled synthetic resin with excellent strength and elasticity, while the part body is made of inexpensive synthetic resin (Nos. 2 and 3).
It is formed using a recycled product (of the same size as the original) as the material.

One end of the guide pin has a vertically divided groove to form a conical head, and the tip of the conical head is provided with a peel-prevention piece, while the main body of the pin has a large-diameter portion opened on its surface. A pin attachment hole is provided extending through the front and back surfaces, and a guide pin is fitted into the attachment hole such that its conical head and peel prevention piece engage with the large diameter portion.

An unregenerated synthetic resin is coated on the surface of the body part by injection so that a part of the resin penetrates into the large diameter part.

Effect By taking the above measures, sufficient strength and elasticity can be obtained in the guide pin.

Horn parts can be obtained cheaply.

It is possible to prevent the large diameter portion from collapsing after the surface of the pad body is coated and molded.

Specific embodiments of the present invention will be described below with reference to the drawings shown in FIGS. 1 to 3.

Example A horn part consists of a part body part 1 and a plurality of guide pins 6, 6, 6, 6, and the part body part 1 and each guide pin 6 are made of synthetic resin such as ABS, polyamide, polystyrene, polypropylene, etc. It is formed by integral molding using the raw material by injection molding. More specifically, the guide pin 6 is molded using unrecycled high-quality material, while the pad body 1 is molded using a recycled product (about No. 2 or No. 3) of the above-mentioned material.

The body part 1 has a top on the front side and both front and rear and right and left sides, and is formed into an arbitrarily shaped bowl shape, and has ribs 2a extending in the vertical and horizontal directions on the back side.
2a and 2b, and ribs 3, 3, 3, 3 formed in a cross shape are provided at their four corner positions to protrude downward (see the conventional structure shown in FIG. 4). In each of the ribs 3, 3, 3, 3, a mounting hole 4 for a guide pin 6 is provided extending in both the front and back directions, located at the center (crossing part) thereof, and passing through the mounting hole 4 of each rib 3, 3, 3, 3. At one end on the top side, a large diameter portion 5 is provided so as to open toward the top side via a stepped portion 5a.

On the other hand, the guide pin 6 is provided with a conical head 7 at its lower end for engaging with a steering wheel with a vertical groove 8 at its center, and the upper end also has a vertical groove 8 at its center. 10 is provided with a conical head 9, and a plurality of anti-peeling pieces 12 are integrally provided at the tip of the conical head 9 to protrude. Further, a flange piece 11 is provided on the guide pin 6 so as to protrude in correspondence with the opening on the lower end side of the mounting hole 4. Thus, each guide pin 6 is connected to each mounting hole 4 formed in the body part 1 in a vertically divided groove 10.
By fitting into the mounting hole 4 through elastic deformation at
The peel-off prevention piece 1 engages with the stepped portion 5a formed in the
2 protrudes into the same-diameter large portion 5 (the portion protruding from the opening surface of the large-diameter portion 5 is cut as appropriate),
That is, a state in which the guide pin 6 is fitted into the mounting hole 4 is obtained.

In this manner, with the guide pin 6 fitted into the mounting hole 4, the surface of the part body 1 (top and both front and rear sides) is coated with unrecycled, high-quality material by injection molding. As a result, a portion of the same material enters the large-diameter portion 5 and the vertically divided groove 10, and the press-fitting pressure forces the conical head 9 to expand in the outer radial direction and forcibly forms the stepped portion 5a.
A state in which the parts are engaged with each other is obtained, and a state in which the part main body portion 1 and each guide pin 6, 6, 6, 6 are integrated is obtained.

In particular, since the peeling prevention piece 12 protrudes inside the large diameter part 5, in addition to being able to effectively integrate, the gap formed in the large diameter part 5 by the peeling prevention piece 12 By narrowing the interval, it is possible to obtain the effect of preventing the occurrence of depression after the coating is formed.

Furthermore, by coating the surface of such a part body part 1 with unrecycled high-quality synthetic resin by injection molding, the entire appearance can be integrally molded using high-quality synthetic resin as a material. You can get a horn part that is completely the same.

Effects of the invention The invention is constructed as described above.
As mentioned above, the main part of the part and the guide pin are provided separately, and the guide pin is molded using unrecycled material, while the main part of the part is a recycled product made of the same material as above (about No. 2 or 3). By molding the guide pin using a horn part, sufficient strength and elasticity can be obtained in the guide pin, and the horn part can sufficiently withstand overloads such as twisting and impact, that is, it has excellent durability. It has now become possible to obtain an inexpensive horn part.

In addition, in the present invention, in the connection structure between the part body and each guide pin, a large diameter part is provided on the surface side of the mounting hole provided in the part body, and the guide pin is connected to the same large diameter part. A part of the unrecycled synthetic resin that is fitted by engaging a conical head formed with a vertical groove at one end of the upper end, and that covers the surface of the body part of the part by injecting. By infiltrating the large-diameter part and the vertically divided groove part, it is possible to obtain an appearance as if the entire part was integrally molded from high-quality synthetic resin, as well as to make the part body and each part It has now become possible to strongly integrate the guide pin with a simple structure.

In particular, in the present invention, a plurality of peeling prevention pieces are provided protruding from the tip of the conical head that engages with the large diameter part, and a gap is formed in the large diameter part by the peeling prevention pieces. By narrowing the distance between the parts, it is possible to increase the effect of preventing separation between the part body and the guide pin, and also to effectively prevent the occurrence of depressions after molding.

Furthermore, in the present invention, by molding the part body and the guide pin separately as described above, the structure of the mold can be significantly simplified. It has now become possible to significantly improve durability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the external appearance of a horn putt according to the present invention, FIG. 2 is a side sectional view showing the horn putt in an assembled state, and FIG. 3 is a side sectional view showing the same horn putt in an exploded state. Further, FIG. 4 is an external perspective view of a conventionally constructed horn putt seen from the back side. 1... Part body part, 2a, 2b... Rib, 3
...Rib, 4...Mounting hole, 5...Large diameter part, 5a
...Stepped portion, 6...Guide pin, 7...Conical head,
8... Vertical groove, 9... Conical head, 10... Vertical groove, 11... Flange piece, 12... Peeling prevention piece.

Claims (1)

[Scope of utility model registration request] The main body of the part is molded using recycled resin, and a mounting hole with a large diameter is provided at one end of the front side, extending from both the front and back sides. A conical head formed with a vertically divided groove is formed at one end of the guide pin that corresponds to the large diameter portion of the guide pin to be molded, and a peeling prevention piece protruding from the conical head is provided to correspond to the mounting hole. A flange piece is provided at each position, and the guide pin that fits into the mounting hole is provided so that the flange piece abuts the lower end of the mounting hole, and the conical head and anti-peeling piece engage with the large diameter part. A horn part in which the surface of the main body is coated with unregenerated resin by injection so that a portion of it penetrates into the large diameter part.