JPH07195928A - Installing structure of knob for operation - Google Patents

Abstract

PURPOSE:To make easy the assembling and the removing work of a knob for operation installed to the tip of a control lever which is installed for operating the heater control of an automobile and the like, and to make it possible to reuse it. CONSTITUTION:In the installing structure of a knob for operation in which a recess 3 is formed on the plate surface at the tip 1a of a control lever 1, and an insertion hole to fit to the tip 1a of the control lever 1 is formed on the end face of a knob 2, while a projection 5 to engage to the recess 3 is formed on the inner surface of the insertion hole 4, the entrance of the wall surface at the opposite side of the projection 5 of the insertion hole 4 is expanded so as to form a guide.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it easy to assemble and pull out an operating knob mounted on the tip of a control lever mounted for operating a heater control of an automobile, etc., so that it can be reused. The mounting structure of an operating knob.

[0002]

2. Description of the Related Art A driver's seat of an automobile is provided with an instrument panel as an instrument panel. A ventilator is provided at the center and both sides of the instrument panel, a warm air outlet is provided at the feet of front passengers, and a front desk. Defrosters are placed on the left and right along the windshield to ensure proper ventilation and heating.

Such a heater control panel for air conditioning is arranged on the lower side of the central portion of the instrument panel. As shown in FIG. 7, the heater control panel has an outlet switching lever A, an inside / outside air switching lever B,
A temperature control lever C, a fan switch D, etc. are provided.

A control lever 100 (to be described later) such as the outlet switching lever A, the inside / outside air switching lever B, and the temperature control lever C is a heater control panel 101.
Is arranged so that it can slide in the left-right direction, and
A knob 102 is attached to the tip of the control lever 100 to facilitate gripping during operation.

FIG. 8 to FIG. 10 show a mounting structure of an operating knob that has been conventionally mounted on the tip of a control lever of this type. A rectangular recess 103 is formed on the plate surface at the tip of the control lever 100 formed in a thin plate shape. On the other hand, an insertion hole 104 is formed in the end surface of the knob 102 that is fitted and mounted on the control lever 100. This insertion hole 104
A semi-circular protrusion 105 that engages with the recess 103 is formed inside.

This knob 102 is connected to the control lever 10
To fit 0, the insertion hole 104 of the knob 102 is fitted to the tip of the control lever 100. Then, the protrusion 105 in the insertion hole 104 is attached to the control lever 100.
It engages with the concave portion 103 and is fixed.

[0007]

However, according to the above-mentioned conventional technique, when the knob 102 is assembled, the control lever 100 does not escape, so that the control lever 100 is caught by the protrusion and it is difficult to assemble. When the knob 102 is assembled, the knob 102
Deform the protrusion 105 of the control lever 100
Since the control lever 100 was fitted in the recess 103, the control lever 100 was caught by the protrusion 105, and the protrusion 105 might be crushed or removed while the knob 102 was repeatedly attached and detached. For this reason, if the insertion hole 104 is enlarged, the knob 102 may rattle and come off.

The present invention solves the above problems and makes it easy to assemble and pull out the operating knob mounted on the tip of the control lever mounted for operating the heater control of an automobile, etc., and to reuse it. It is an object of the present invention to provide a mounting structure for a different operating knob.

[0009]

In order to solve the above problems, the present invention forms a recess in the plate surface of the tip of the control lever, and forms an insertion hole in the end surface of the knob to fit the tip of the control lever. In addition, in the mounting structure of the operation knob in which the protrusion engaging with the recess is formed on the inner surface of the insertion hole, the guide portion is formed by enlarging the entrance portion of the wall surface of the insertion hole opposite to the protrusion. There is something I did.

[0010]

When the knob is fitted to the tip of the control lever, the knob is fitted obliquely so that the tip of the control lever is located in the enlarged portion of the insertion hole. In this way, the tip of the control lever is inserted into the insertion hole of the knob so as not to hit the protrusion of the knob. In this way, the protrusion is prevented from coming into contact with the recess of the control lever.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 is a perspective view showing a mounting structure of an operating knob, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is B- of FIG.
4 is a sectional view taken along line B, FIG. 4 is a sectional view taken along line CC of FIG.
FIG. 2 is a sectional view taken along the line DD of FIG. 1.

1 to 5, reference numeral 1 is a control lever such as an outlet switching lever, an inside / outside air switching lever, and a temperature control lever provided on a heater control panel. 2 is the tip portion 1a of the control lever 1
It is an operation knob attached to the.

A tip portion 1a of the control lever 1 is formed in a thin plate shape, and a concave portion 3 for engaging with an engaging projection portion (described later) of the operation knob 2 is formed on the plate surface. This recess 3 uses a hole or a dent. The control lever 1 is formed of, for example, a synthetic resin plate, a thin metal plate, or the like, and the width on the front end side is gradually narrowed.

The operation knob 2 has an insertion hole 4 formed in the end face thereof so as to be fitted into the tip portion 1a of the control lever 1, and the bottom surface of the insertion hole 4 is engaged with the recess 3 of the control lever 1. An engaging protrusion 5 having a bottomed quadrangular pyramid shape is provided. At least the front and rear wall surfaces of the engagement protrusion 5 are formed into a taper 5a.

The insertion hole 4 is formed by enlarging the entrance portion 4a of the wall surface (ceiling surface) opposite to the bottom surface on which the engaging projection 5 is provided, from the middle b of the entrance portion 4a.
The guide portion 6 is formed by forming the slope 7 that gradually decreases toward the intermediate portion c. The thickness m from the slope 7 to the depth d is equal to or slightly wider than the thickness n of the control lever 1 (m ≧ n). The entrance portion of the insertion hole 4 is set such that the width obtained by subtracting the height dimension h of the engaging protrusion 5 from the height dimension p is equal to m.

The dimensions of the insertion hole are set as follows, for example. When the entrance width of the insertion hole 4 is X and the inner width is Y, X> Y is set. From the entrance a of the insertion hole 4 to the middle b, L1, b from the middle part c to L2
When L3 extends from c to the back d, L1 ≦ L2 ≦ L3 is set. Incidentally, these dimensional ratios can be appropriately changed and adopted depending on the case. L1 is set so that the control lever 1 does not come off from the engaging protrusion 5. L2 is an angle that allows the control lever 1 to be smoothly inserted. L
3 is set to a length that can support the control lever 1. In this case, it is possible to arbitrarily select depending on the positional relationship between the engaging protrusion 5 and the recess 3 of the control lever 1.

The insertion hole 4 is formed so that the shape of the guide portion 6 between a and c corresponds to the shape of the tip portion 1a of the control lever 1. That is, leaving both sides of the guide portion 6 which is a part of the ceiling surface of the conventional insertion hole,
A step portion 8 is formed along both upper corners of the insertion hole 4 from the opening end to c. The width between the step portions 8 is formed in the shape of the tip portion of the control lever. As a result, the dimensions of the control lever 1 and the insertion hole 4 are set so that both sides of the control lever 1 are held by the step portion 8 when the control lever 1 is inserted into the insertion hole 4.

Next, the mounting structure of the operation knob having the above structure will be described. The operation knob 2 is fitted into the tip portion 1 a of the control lever 1 via the insertion hole 4. At this time, as shown in FIG. 6A, the control lever 1 is inserted along the upper side of the insertion hole 4 of the operation knob 2. As a result, the control lever 1 can be inserted into the engagement protrusion 5 without hitting the engagement protrusion 5 of the insertion hole 4. Next, as shown in FIG. 6B, the slope 7 of the guide portion 6 of the insertion hole 4 is applied to the tip of the control lever 1 and the operation knob 2 is pushed in. Then, as shown in FIG. 6C, when the operation knob 2 is pushed in, the recessed portion 3 of the control lever 1 engages with the engagement protrusion 5 of the insertion hole 4, and the removal is prevented. At this time, both ends of the control lever 1 are locked and fixed to the step portion 8 of the insertion hole 4.

Even if both sides of the control lever 1 hit the step portion 8 before the control lever 1 is completely inserted into the insertion hole 4, the control lever 1 is freely curved and absorbed depending on the material and thickness of the control lever 1. be able to.

According to the above-described embodiment, the guide portion 6 is formed by enlarging the entrance portion of the wall surface on the side opposite to the engaging projection portion 5 of the insertion hole 4 of the operation knob 2, so that the control lever 1 is formed.
When the control lever 1
There is no risk that the engaging projection 5 will be crushed by hitting. Further, since the front and rear of the engaging projection 5 of the insertion hole 4 are formed into the taper 5a, the control lever 1 can smoothly enter the insertion hole 4. When the control lever 1 is inserted in the insertion hole 4, the control lever 1 is clamped by the inside of the insertion hole 4, so that the operation knob 2 does not become loose. Further, since the operation knob 2 grips both sides of the control lever 1 by the step portion 8 of the insertion hole 4,
There is no risk that the operating knob 2 will come off the control lever 1.

[0021]

As described above, according to the attachment structure of the operating knob of the present invention, the following effects can be obtained. In claim 1, a recess is formed in the plate surface of the tip of the control lever, an insertion hole that fits into the tip of the control lever is formed in the end surface of the knob, and the inner surface of the insertion hole is engaged with the recess. In the operation knob mounting structure with the protrusions formed, the guide part was formed by enlarging the entrance part of the wall surface on the side opposite to the protrusion part of the insertion hole, so the control bar is inserted along the guide part of the knob. Therefore, the knob can be easily attached and detached. In Claim 2, the enlarged portion of the insertion hole is formed at least deeper than the projection, and the entrance height of the insertion hole is set to be at least the sum of the thickness of the control lever and the height of the projection. Therefore, there is no risk of the protrusion hitting the control lever. In the third aspect, at least the front and rear surfaces of the protrusion are formed to be tapered, so that the control lever can be easily assembled. In claim 4, since the wall surface of the insertion hole on the side opposite to the protrusion is formed to be a slope that gradually decreases to form the guide portion, the operation knob can be attached to the tip of the control lever using the slope. it can. In claim 5, since the stepped portions are formed on both sides of the guide portion of the insertion hole, and the width between the stepped portions is formed in the shape of the tip portion of the control lever, the operation knob is not attached to the control lever. Since the control lever can be gripped and held by the step portion, there is no fear of rattling.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a mounting structure for an operating knob according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

4 is a cross-sectional view taken along the line CC of FIG.

5 is a cross-sectional view taken along the line DD of FIG.

FIG. 6A is a cross-sectional view showing the order of attaching the operation knobs to attach the operation knobs to the control lever.
FIG. 7B is a cross-sectional view showing the mounting sequence of the operation knob in a state where the control lever is inserted into the insertion hole while avoiding the protrusion.
FIG. 6C is a cross-sectional view showing the attachment sequence of the operation knob attached to the control lever.

FIG. 7 is a conceptual diagram showing a heater control panel.

FIG. 8 is a perspective view showing a conventional mounting structure for an operating knob.

9 is a cross-sectional view taken along the line AA of FIG.

10 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 1 Control Lever 2 Operating Knob 3 Recess 4 Insertion Hole 5 Engagement Protrusion 6 Guide 7 Slope 8 Step 1a Tip 4a Entrance 5a Taper

Claims (5)

[Claims] 1. A recess is formed in a plate surface of a tip portion of a control lever, an insertion hole for fitting the tip portion of the control lever is formed in an end surface of a knob, and the recess is formed on an inner surface of the insertion hole. In the mounting structure for an operating knob having a protruding portion, a guide portion is formed by enlarging an entrance portion of a wall surface of the insertion hole opposite to the protruding portion. 2. The enlarged portion of the insertion hole is formed at least deeper than the protrusion, and the entrance height of the insertion hole is set to be at least the sum of the thickness of the control lever and the height of the protrusion. The mounting structure for the operating knob according to claim 1, wherein 3. The mounting structure for an operating knob according to claim 1, wherein at least front and rear surfaces of the projection are tapered. 4. The operation knob according to claim 1, wherein the guide portion is formed by forming a wall surface of the insertion hole on the side opposite to the projection portion into a gradually decreasing slope. Mounting structure. 5. The stepped portions are formed on both sides of the guide portion of the insertion hole, and the width between the stepped portions is formed in the shape of the front end portion of the control lever.
The operating knob mounting structure according to any one of 1.