JPS6311002Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a device for attaching an automobile switch body to a column tube.

As an example of this type of device, one having the configuration shown in FIG. 1 has been considered. In this FIG. 1, 1 is a column tube through which a steering shaft (not shown) of an automobile passes, 2 is a mounting part integrally molded in a cylindrical shape on a plastic switch body 3; , a plurality of slits 4 extending in the axial direction are formed therein, and a protrusion 5 having a triangular cross section and tapering in the radial direction is formed integrally with the protrusion 5.
A long hole 6 oriented in the direction of protrusion is formed therethrough. Reference numeral 7 denotes a tightening band wrapped around the outer periphery of the mounting portion 2. A bolt 8 is inserted into both ends of this band through the elongated hole 6, and the tip of the bolt 8 is inserted into one end of the tightening band 7. It is screwed into a threaded portion 7a formed in the section. Further, 9 is a recess formed in the column tube 1, and 10 is a claw protruding from the inner periphery of the mounting portion 2. The switch body 3 is positioned by engagement of the claw 10 with the hole 9. . In the configuration shown in FIG. 1, when the bolt 8 is threaded, both ends of the tightening band 7 are moved together with the bolt 8 along the inclined surface of the protrusion 5 in the direction of arrow A. The tightening band 7 is tightened to reduce the diameter of the mounting portion 2, thereby fixing the switch body 3 to the column tube 1. However, in the above configuration, since both ends of the tightening band 7 are moved in the direction of the arrow A, the tightening force by the tightening band 7 is greater in the direction of the arrow A, but in the opposite direction of the arrow A and in the direction of the arrow B. Since it becomes smaller in the C direction, it may not be possible to obtain a sufficient overall tightening force, and there is a risk that the fixation of the switch body 3 to the column tube 1 may become uncertain, and in some cases, the switch body 3 may become There was even a risk that it would be damaged.

The present invention has been made in view of the above circumstances, and its object is to provide an automobile switch body mounting device that can ensure that the switch body is fixed to the column tube.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 5.

11 is a cylindrical column tube, into which a steering shaft 12 is inserted. 13
A switch body for installing a switch mechanism is attached to the upper end of the column tube 11, and is integrally molded from plastic. A turning lever 14 serving as an operating member is rotatably mounted on the side of the switch body 13, and a lever 14 is rotatably mounted on the side of the lower surface of the switch body 13.
A switch case 15 containing a turn switch mechanism operated by a switch is attached. Now, reference numeral 16 denotes a mounting portion for mounting the switch body 13 to the column tube 11, and this is integrally molded downward so as to form a substantially cylindrical shape at substantially the center of the lower surface of the switch body 13. This mounting part 1
Reference numeral 6 has a cylindrical peripheral wall divided into a plurality of arc-shaped pieces 16a by slits 17 extending in the axial direction, so that the diameter can be elastically contracted and expanded. Reference numeral 18 denotes a protrusion protruding from the inner periphery of the lower end of a predetermined arc-shaped piece among the plurality of arc-shaped pieces 16a, and the upper and lower sides of this protrusion have slopes 1.
8a and 18b. A recess 19 is formed at the upper end of the column tube 11 in correspondence with the protrusion 18 . Reference numeral 20 denotes a tightening band, which is wound around the outer periphery of the attachment part 16 so as to extend in different directions after crossing the attachment part 16 and extending in different directions. The switch body 13 is fixed by hooking the letter-shaped hooking piece 20a onto a protrusion 21 that is integrally provided on the switch body 13. A threaded portion 20b is formed at the other end of the tightening band 20, and the tip of a bolt 23, which serves as a tightening means and is inserted through a protrusion 22 integrally provided on the switch body 13, is inserted into the threaded portion. 20b. Reference numeral 24 denotes a locking piece which also serves as a removal assisting device and extends outward from the tip of the arc-shaped piece on which the protrusion 18 is protruded among the plurality of arc-shaped pieces 16a. The arc-shaped piece 16a corresponding to
Since the switch body 13 is pulled out from the column tube 11, the switch body 13 can be easily removed from the column tube 11. Further, this locking piece 24 is for preventing the tightening band 20 wrapped around the outer periphery of the mounting portion 16 from slipping out.

In the above configuration, in order to attach the switch body 13 to the upper end of the column tube 11, first attach the tightening band 2 to the attachment part 16 of the switch body 13.
, and hook the hooking piece 20a of the tightening band 20 onto the protrusion 21, and at the same time, insert the bolt 23 through the protrusion 22 and screw its tip into the threaded part 20b of the tightening band 20. I'll keep it. At this time, the bolt 23 is loosely screwed into the arc-shaped piece 16a of the mounting portion 16.
can be freely expanded and deformed within the loosening range of the tightening band 20. In this state, the mounting portion 16 of the switch body 13 is fitted onto the outer side of the upper end of the column tube 11. Then, the arc-shaped piece 16a having the protrusion 18 is elastically expanded and deformed, so that the protrusion 18 rides on the outer peripheral surface of the column tube 11 and slides on the outer peripheral surface of the column tube 11. The protrusion 18 is connected to the column tube 11.
When the arcuate piece 16a encounters the recess 19, the arc-shaped piece 16a restores itself by its own elastic force, causing the protrusion 18 to engage with the recess 19, thereby positioning the switch body 13. Column tube 1 as above
1, the tightening band 20 is in a loosened state, but is stopped by a locking piece 24 extending outward from the lower end of the mounting part 16, It won't fall off. And as above, switch body 13
After fitting the mounting portion 16 into the upper end of the column tube 11, the bolt 23 is threaded. Then, the tightening band 20 is tightened to strongly tighten the arc-shaped piece 16a that constitutes the mounting portion 16 to the column tube 11.
With this, switch body 13 is column tube 1
1 is firmly fixed to the upper end.

In addition, switch body 13 is connected to column tube 11.
To remove it, loosen the bolt 23 and remove the locking piece 24.
All you have to do is pull the locking piece 24 upward.
The arcuate piece 16a corresponding to the opening is elastically deformed in the expanding direction and the protrusion 18 is pulled out of the recess 19 of the column tube 11, so that the switch body 13 can be easily removed.

According to the present embodiment described above, the tightening force by the tightening band 20 is uniformly applied to the mounting portion 16 from the entire circumference, so that the switch body 13 is applied to the column tube 11 as in the conventional case. There is no risk that the fixation will become uncertain, and therefore there is no risk that the switch body 13 will rattle in response to the operation of the lever 14.

In the above embodiment, the protrusion 18 was provided protruding from the mounting part 16 and the recess 19 was formed in the column tube 11, but conversely, the protrusion was provided protruding from the outer peripheral surface of the column and the recess was formed on the inner peripheral part of the mounting part. You can also do this.

According to the present invention, as explained above, in an automobile switch body mounting device for mounting a plastic switch body, in which a switch mechanism operated by an operating member is disposed, to a column tube, the switch body is mounted on a switch body. A substantially cylindrical mounting portion is integrally molded, and a slit extending in the axial direction is formed in the cylindrical circumferential wall of the mounting portion to allow the diameter to be reduced. In addition, a tightening band extending in different directions after the both ends intersects each other is wound, and the diameter of the attachment part is reduced by reducing the diameter of the tightening band, so that the tightening of the tightening band is made easier. The force can be applied uniformly to the mounting portion, thereby ensuring that the switch body is mounted to the column tube.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view for explaining a conventional structure. Figures 2 to 5 show an embodiment of the present invention, with Figure 2 being a partially cutaway front view in the installed state, Figure 3 being a bottom view, and Figure 4 being a perspective view of the attachment part. ,
FIG. 5 is a perspective view of the tightening band. In the figure, 11 is a column tube, 13 is a switch body, 14 is a lever (operating member), 16 is a mounting portion, 17 is a slit, 20 is a tightening band, and 23 is a bolt (fastening means).

Claims (1)

[Scope of utility model registration request] A plastic switch body on which a switch mechanism operated by an operating member is installed is attached to a column tube, and the switch body is integrally molded into a substantially cylindrical shape to fit on the outside of the column tube. A mounting portion that is capable of reducing its diameter by forming a slit extending in the axial direction in a cylindrical peripheral wall, and a mounting portion that extends approximately once around the outer periphery of the mounting portion and extends in different directions after crossing each other at both ends thereof. A tightening band is wound in such a manner that one end is fixed to the switch body, and a tightening means is provided on the switch body and moves the other end of the tightening band in the tightening direction. A mounting device for an automobile switch body.