JPH034597Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention is a vehicle steering wheel part for supplying power to equipment such as an alarm switch arranged on the steering wheel of a vehicle. The present invention relates to a power supply device for a power supply device.

(Prior Art) For example, in automobiles, the alarm switch is generally arranged on the steering wheel, which is a rotating part, and therefore, the power supply device for the alarm switch is equipped with a Special improvements have been made. That is, as an example of this type of power supply device, conventionally, a slip ring is provided on the steering wheel side concentrically with the slip ring, and a slip ring is provided on the base side of the lever combination switch arranged around the steering shaft. a power supply rod that is inserted into a through hole formed in the power supply rod and can reciprocate in the axial direction; and a power supply rod that is interposed between the large diameter head formed at the upper end of the power supply rod and the base. It is known that the head of the power supply rod is always in pressure contact with the slip ring, regardless of the rotational position of the steering wheel, by providing spring means for biasing the power supply rod in the direction of the slip ring. . Furthermore, in this case, it is necessary to prevent the power supply rod, which is biased by the spring means, from coming off before the lever combination switch is installed in the fixed position. A stopper made of an E-ring or the like is fitted to the lower end.
In this case, a circuit is formed from the lead wire connected to the lower end of the power supply rod, through the power supply rod, the slip ring, and the alarm switch to the body ground, and when the alarm switch is turned on, a circuit is formed. In response, an alarm connected between the lead wire and the battery is energized.

(Problems to be Solved by the Invention) However, the conventional configuration described above requires a stopper as a separate member, which causes problems such as an increase in the number of parts and an increase in cost.

The present invention was developed in view of the above circumstances, and its purpose is to prevent the power supply rod from coming off by using the originally necessary connection terminal,
An object of the present invention is to provide a power supply device for a vehicle steering wheel portion, which is effective in reducing the number of parts.

[Structure of the invention] (Means for solving the problem) The present invention has an upper end that is inserted into a through hole of a base disposed around the steering shaft so as to be able to reciprocate in the axial direction. The subject matter is a power supply device for a vehicle steering wheel portion, which includes a power supply rod that is pressed into contact with a slip ring on the steering wheel side by a spring means, and a connection terminal having a frame-shaped part that is fitted into the outer periphery of the lower end of the power supply rod. A small diameter portion is formed at the lower end of the power supply rod to provide a locking surface facing upward, and the frame portion of the connection terminal is formed in a shape larger than the through hole. The present invention is further characterized in that a retaining tongue that enters into the small diameter portion is cut and raised on the frame-like portion so that the end edge of the tongue is secured to the locking surface.

(Function) The power supply rod inserted through the through hole of the base is always pressed against the slip ring on the steering wheel side, and the frame-shaped part of the connection terminal is fitted into the lower end of this power supply rod. Power can be supplied to devices provided on the steering wheel side via the connection terminal, power supply rod, and slip ring. At this time, the lower end of the power supply rod is provided with a locking surface facing upward, and the frame-shaped portion of the connection terminal is formed to have a larger diameter than the through-hole. Since the portion is provided with a retaining tongue piece that is retained on the retaining surface, the power supply rod is prevented from coming off upward by the frame-shaped portion of the connection terminal.

(Embodiment) In FIGS. 1 and 2, 1 is a lever combination switch for an automobile, for example, and has a switch base 2 that is a base disposed around a steering shaft (not shown). This switch base 2 is provided with a turn signal switch lever 3, a moderation mechanism 4, a contact mechanism (not shown), and the like. Further, 5 is a metal slip ring attached concentrically to the steering wheel (not shown), and this is used to connect devices installed on the steering wheel, such as an alarm switch (not shown). The body is grounded through. Reference numeral 6 denotes a power supply rod made of a copper alloy, which is inserted from above into a through hole 2a formed in the switch base 2 so as to be able to reciprocate in the axial direction. Reference numeral 7 denotes a compression coil spring as a spring means, which is installed in advance around the power supply rod 6 and is interposed between the large diameter head 6a formed at the upper end of the power supply rod 6 and the switch base 2. ing. As a result of the provision of the compression coil spring 7 in this manner, the head 6a of the power supply rod 6 is always pressed against the slip ring 5 regardless of the rotational position of the steering wheel. In addition, at the lower end of the power supply rod 6 (the part that protrudes downward from the switch base 2),
As shown in FIG. 1, a locking surface 6c facing upward is provided by forming a small diameter portion 6b.

Now, 8 is a lead wire 9 for power supply (see Figure 3)
This is a connection terminal for connecting the power supply rod 6 to the power supply rod 6, and as shown in an enlarged view in FIG.
It has a frame portion 8b having a larger diameter and a U-shaped cross section, and by fitting the frame portion 8b into the outer periphery of the lower end of the power supply rod 6, electrical connection between the power supply rod 6 and the power supply rod 6 can be made. It is connected to the. At this time, a pair of retaining tongues 8c, 8c directed diagonally downward are formed on the frame-shaped portion 8b of the connection terminal 8 by cutting and raising it into a U-shape and bending it inward. has been done. When fitting such a connection terminal 8 to the lower end of the power supply rod 6, as shown in FIG. At this time, the tongue piece 8c enters into the small-diameter portion 6b of the power supply rod 6, and its tip edge becomes locked to the locking surface 6c.

Although not shown, the other end of the lead wire 9 is connected to the positive terminal of the battery via an alarm. Therefore, when the alarm switch (not shown) is turned on, the lead wire 9, the connection terminal 8,
An energizing path for the alarm is formed through the power supply rod 6, the slip ring 5, and the alarm switch, and the alarm is thereby energized and driven.

As a result of the above configuration, the connection terminal 8 attached by fitting the frame portion 8b to the lower end of the power supply rod 6 has its tongue piece 8c attached to the power supply rod 6.
By being locked to the locking surface 6c formed on the side, it is reliably prevented from coming off in the axial direction (downward). In this case, since the frame-shaped portion 8b is formed in a larger shape than the through hole 2a through which the power supply rod 6 is inserted, it functions to prevent the power supply rod 6 from coming off, which is no longer necessary in the past. It is possible to eliminate the need for a stopper for preventing the separate member from coming off, and the number of parts can be reduced. Further, according to the above configuration, when replacing the power supply rod 6, which is relatively easily worn, it is only necessary to remove the connection terminal 8, so there is an advantage that the replacement work can be simplified.

In the above embodiment, the tongue piece 8c is cut and raised so as to be directed diagonally downward and enter into the small diameter portion 6b, so that the tip edge of the tongue piece 8c is locked on the locking surface 6c. However, the present invention is not limited thereto. For example, a tongue piece may be cut and raised on the frame-shaped portion 8b to extend laterally into the small-diameter portion 6b, and the side edge of this tongue piece may be engaged with the locking surface 6c. It is also possible to have a configuration that stops the operation. Further, the shape of the small diameter portion 6b formed on the power supply rod 6 is not limited to the above embodiment, and any shape that has a locking surface facing upward is sufficient. Further, as devices provided on the steering wheel, in addition to a switch for an alarm, a switch for an audio device, a switch for an automatic constant speed traveling device, etc. can be considered.

[Effect of the invention] According to the invention, as is clear from the above explanation, the upper end of the power supply rod, which is provided to be able to reciprocate in the axial direction, is slidably connected to the slip ring that rotates integrally with the steering shaft. In the power supply device for the vehicle steering wheel part, the power supply rod can be prevented from coming off by using the originally necessary connection terminal, and the number of parts can be reduced. It has the following effects.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view, Fig. 2 is a plan view of the lever combination switch, Fig. 3 is a perspective view of the connection terminal, and Fig. 4 is a main part. FIG. In the figure, 1 is a lever combination switch,
2 is a switch base (base), 5 is a slip ring, 6 is a power supply rod, 6a is a head (upper end), 6b is a small diameter portion, 6c is a locking surface, 7 is a compression coil spring (spring means), Reference numeral 8 indicates a connection terminal, 8b a frame-shaped portion, 8c a tongue piece, and 9 a lead wire.

Claims (1)

[Scope of utility model registration request] A slip ring is provided on the steering wheel so as to rotate together with the steering wheel, a base is placed around the steering shaft, and the slip ring is inserted through a through hole formed in the base so as to be able to reciprocate in the axial direction. A device comprising: a power supply rod whose upper end is pressed against the slip ring by a spring means; and a connection terminal having a frame-shaped portion fitted into the outer periphery of the lower end of the power supply rod, the lower end of the power supply rod A locking surface facing upward is provided by forming a small diameter part in the part, and a frame part of the connection terminal is formed in a shape larger than the through hole, and furthermore, the frame part has the small diameter part. 1. A power supply device for a vehicle steering wheel portion, characterized in that a tongue piece for preventing slippage that enters the portion is cut and raised so that an end edge of the tongue piece is locked to the locking surface.