JPH0525343Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to an operating lever device in which a knob is inserted into a lever shaft so that it cannot be removed, and in particular has a structure that prevents the knob from rattling. Regarding the improvement of

(Prior art) For example, in the case of an operating lever device for automobile wipers, a rotary knob for adjusting the intermittent operation time of the wiper, a fixed knob that covers the tip of the lever shaft, etc. are sequentially inserted into the lever shaft. I'm trying to install it. In this case, since the fixed knob is attached with some play in the axial direction of the lever shaft, it may wobble due to vibrations, etc. In order to prevent this wobbling, in the past, a compression coil spring was interposed between the shaft retaining ring attached to the lever shaft and the fixed knob to prevent the fixed knob from coming out. It was designed to press and energize it.

(Problems to be Solved by the Invention) However, the conventional configuration described above requires a compression coil spring to prevent rattling of the knob, resulting in an increase in cost.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an operating lever device that can prevent the knob from rattling without using a separate component such as a compression coil spring.

[Structure of the invention] (Means for solving the problem) The operating lever device of the invention has an engaging recess formed in one of the lever shaft and the knob, and engages with the engaging recess in the other. An elastic piece having an engaging protrusion is formed, and one of the inner surface of the engaging recess and the engaging protrusion is formed in an inclined shape from the center portion toward both sides in the axial direction of the lever, and the inclined part on both sides is formed. This feature is characterized in that the shaped portion is configured to come into elastic contact with the other edge portions.

(Operation) When the knob is inserted into the lever shaft, the engaging protrusion of the elastic piece is elastically engaged with the engaging recess of the lever shaft.

In this engaged state, the inclined portions on both sides provided on one of the inner surface of the engagement recess and the engagement protrusion are in elastic contact with the edges of the other, thereby suppressing rattling of the knob. Ru.

(Example) An example in which the present invention is applied to a wiper operating lever device of an automobile will be described below with reference to FIGS. 1 to 4.

In FIG. 4, a column body 1 is attached to a steering column of an automobile, and a lever shaft 2 made of a pipe is rotatably supported by a pin 3 on the left side of the column body 1 in the drawing.
The lever shaft 2 is used to operate a wiper switch (not shown) provided on the column body 1, and its rotational position can be changed to three positions in addition to the off position, and when set to the first operating position, the wiper operates intermittently. When set to the second and third positions, the wiper is operated continuously at low and high speeds, respectively.

Next, in FIG. 3, a slit 4 is formed in the front end of the lever shaft 2, extending in the axial direction and having one end open at the tip of the lever shaft 2, and a slit 4 is formed at a predetermined portion on the outer periphery of the front end. An engagement groove 5 serving as an engagement recess is formed so as to go around the lever shaft 2. This lever shaft 2 includes a first fixed knob 6, a rotating knob 7, a moderation plate 8, and a second
The fixing knobs 9 are inserted and installed in sequence.

The first fixing knob 6 has a protrusion 6b integrally protruding from an inner cylindrical part 6a fitted to the lever shaft 2, and by engaging the protrusion 6b with the slit 4, It is unrotatably attached to the lever shaft 2. The rotary knob 7 operates a rotary variable resistor 10 that adjusts the pause time between wiping operations when intermittent operation is selected, and is rotatably attached to the lever shaft 2. . The substrate 11 having the resistance plate 10a of the variable resistor 10 is attached to a spacer 13 fixedly integrated with the first fixed knob 6 by a pin 12, while the brush 10b of the variable resistor 10 is attached to the rotary knob 7.
is installed on. Reference numeral 14 denotes a moderation mechanism for the rotation knob 7, which consists of a ball 16 provided on the rotation knob 7 together with a compression coil spring 15 and the moderation plate 8.
It consists of a plurality of engagement holes 17 which are formed in and into which the balls 16 are engaged and disengaged. Reference numeral 18 denotes a retaining ring for the shaft, which is attached to the lever shaft 2 to prevent the moderation plate 8 from coming off.
Further, the second fixing knob 9 has a protrusion 9b integrally protruding from an inner cylindrical portion 9a fitted to the lever shaft 2, and by engaging the protrusion 9b with the slit 4. It is attached to the lever shaft 2 in a non-rotatable manner. Reference numeral 19 denotes a retaining ring for the shaft attached to the lever shaft 2 to prevent the second fixing knob 9 from coming off. 20 is an elastic claw 2 at the tip of the second fixing knob 9.
The cap is attached by a well-known elastic engagement means according to 0a.

Thus, the first fixed knob 6 and the rotating knob 7
is attached to the lever shaft 2 so as not to wobble in the axial direction by being biased toward the right in the drawing by the compression coil spring 15 of the moderation mechanism 14. Further, the second fixed knob 9 is attached to the lever shaft 2 so as not to wobble in the axial direction by the structure described below.

That is, as shown in FIG. 2, an elastic piece 21 is formed in the inner cylindrical part 9a of the second fixing knob 9 by cutting two slits on each corresponding side. An engagement protrusion 22 corresponding to the engagement groove 5 of the lever shaft 2 is protrudingly provided inside the tip end of the lever shaft 2 . The engagement protrusion 22 is longer than the engagement recess 5, and its protrusion is formed into a substantially V-shape that slopes downward from the center toward both sides of the lever shaft 2 in the axial direction. Then, when the inner cylindrical portion 9a is inserted into the lever shaft 2, as shown in FIG.
1 is elastically deformed to expand, and when the second fixing knob 9 reaches a position where it is prevented from coming off by the shaft retaining ring 19, the engaging protrusion 22 fits into the engaging groove 5 of the lever shaft 2. engage deeply. In this state, the elastic piece 2
1, the engagement protrusion 22 is connected to the lever shaft 2 by the restoring elastic force.
The inclined surfaces 22a and 22b on both sides of the protruding surface of the engaging protrusion 22
are in elastic contact with the front and rear edges 5a and 5b of the engagement groove 5.

In this attached state of the second fixing knob 9, when the second fixing knob 9 tries to move, for example, in the right direction in the figure, the engagement member that is in elastic contact with the right edge 5b of the engagement groove 5 Since the right inclined surface 22b of the protrusion 22 exerts an urging force on the second fixing knob 9 to move it to the left, the second fixing knob 9 does not move rightward, but both Inclined surface 22a, 2
2b is held in a fixed position in elastic contact with both edges 5a, 5b of the engagement groove 5. Even when the second fixed knob 9 tries to move to the left, the same action as described above on the left inclined surface 22a causes the second fixed knob 9 to move to the left.
remains in place. Therefore, the second fixed knob 9 does not wobble in the axial direction of the lever shaft 2 due to vibrations of the automobile, and is maintained at a fixed position.

In the above embodiment, the engaging protrusion 22 is formed in an inclined shape, but as shown in FIG. 5, the inner surface of the engaging groove 5 may be formed in an inclined shape. Further, in the above embodiment, the engagement groove 5 was formed on the lever shaft 2 and the elastic piece 21 was formed on the second fixing knob 9, but as shown in FIG. It may be formed on the knob 9 and the elastic piece 21 may be formed on the lever shaft 2. Further, in the above embodiments, the present invention has been described as being applied to a wiper operating lever device, but the present invention is not limited to this, and may be applied to a lever device for turning lights on and off, for example. Furthermore, when a knob is attached to a lever shaft, it can be widely applied to prevent the knob from rattling.

[Effects of the invention] As explained above, according to the lever device of the invention, an engaging recess is formed on one of the lever shaft and the knob, and an elastic piece having an engaging protrusion is formed on the other. The knob can be attached without rattling in the axial direction of the lever shaft by simply attaching it to the lever shaft, which eliminates the need for separate parts such as compression coil springs to prevent rattling, which is a practical advantage that can reduce costs. It is effective.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a sectional view of the main parts, Figure 2 is a partial perspective view of the second fixing knob, and Figure 3 is a lever device. The sectional view and FIG. 4 are front views of the same, and FIGS. 5 and 6 are views corresponding to FIG. 1 showing other different embodiments of the present invention. In the figure, 1 is a column body, 2 is a lever shaft, 5 is an engagement groove (engagement recess), 9 is a second fixing knob (knob), 21 is an elastic piece, 22 is an engagement protrusion, 22a,
22b is an inclined surface.

Claims (1)

[Scope of utility model registration request] A knob is inserted into a lever shaft and attached in a state where it is not removed, wherein one of the lever shaft and the knob is formed with an engagement recess, and the other has an engagement protrusion that engages with the engagement recess. An elastic piece is formed, and one of the inner surface of the engagement recess and the engagement protrusion is formed in an inclined shape from the center portion toward both sides in the axial direction of the lever, and the inclined portions on both sides of the engagement protrusion are inclined toward both sides in the axial direction of the lever. An operating lever device characterized in that it is configured to come into elastic contact with a portion of the operating lever.