JPH0421011A - Fixed structure of operating parts - Google Patents

Abstract

PURPOSE:To reduce the number of parts and the manhour for assembly by providing a supporting shaft, a flange and a detaining projecting part on the operating parts, and on the other hand, providing a specific through-hole and a detaining recessed part on the fitting part. CONSTITUTION:When a flange 6 of operating parts 2 is inserted into a through- hole 11 of a fitting part 1, the assembly center of a shaft at the time of assembly of the operating parts 2 is positioned in the part being different from the operating center of the shaft 9 at the time of use. Subsequently, the operating parts 2 are rotated centering around the shaft 9 positioned in the assembly center, and also, the operating parts 2 are allowed to slide so that the shaft 9 coincides with the operating center. As a result, a detaining projecting part 7 is engaged to a detaining recessed part 12 and the rotation of the operating parts 2 is controlled. Also, in such a state, a fitting part 1 is inserted and held by the flange 6 and the operating parts 2. In such a way, the operating parts 2 can be fixed surely to a panel by simple work without using a nut, and the number of parts and the manhour for assembly can be reduced.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a structure for fixing operating parts such as a rotary switch, a toggle switch, a bush switch, a rotary variable resistor, and a rotary variable capacitor to a panel. be.

[Prior Art] Generally, a heater control panel for adjusting the temperature inside the vehicle is incorporated in the front of the driver's seat of an automobile.

This heater control panel has controls for turning on and off the rotation speed of the blower motor, which is the blower for heaters and air conditioners.
A blower switch is installed that can be turned on or off in stages.

There are various types of blower switches, such as a rotary type, a toggle type, and a slide type. For example, in the case of a rotary type, the blower switch 51 is fixed to the heater control panel 52 with the structure shown in FIGS. 9 and 10. has been done.

A male screw 53 is provided protruding from the front surface of the blower switch 51, and a shaft 54 of the blower switch 51 is rotatably supported by the male screw 53. In addition, the male screw 5 of the blower switch 51
A protrusion 55 is provided near 3. On the other hand, the heater control panel 52 has a cylindrical attachment portion 56 formed therein. The inner bottom of the mounting portion 56 has a through hole 57 through which the male screw 53 of the blower switch 51 can be inserted, and a projection 5.
A locking hole 58 into which a locking hole 5 can be inserted is provided, respectively.

Therefore, when the shaft 54 of the blower switch 51 is inserted into the through hole 57 of the mounting portion 56 and the protrusion 55 is engaged with the locking hole 58, and the nut 59 is screwed onto the male screw 53 in this state, the blower switch 51 is fixed to the mounting portion 56 so that it cannot fall off and cannot rotate. After fixing the blower switch 51, a display board 60 is placed on the front of the heater control panel 52.
and attach the operating knob 61 to the shaft 54.

[Problems to be Solved by the Invention] However, in the prior art, the nut 59 is tightened to the male screw 53 of the blower switch 51 inserted through the through hole 57 of the mounting portion 56, so that the nut 59 is tightened. There is a problem in that not only the number of parts increases, but also the number of man-hours required for tightening the nut 59 increases.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to reliably fix operating parts such as a blower switch to a panel such as a heater control panel with simple work without using nuts. Another object of the present invention is to provide a fixing structure for operating parts that can reduce the number of parts and the number of assembly steps.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a structure in which an operating component is fixed to a mounting portion of a panel such that the shaft of the operating component passes through the panel, in which the operating component is fixed to a mounting portion of a panel. , a support shaft that protrudes toward the mounting portion and covers the base end of the shaft; a flange formed at the distal end of the support shaft; and a locking protrusion that projects toward the mounting portion from a portion different from the support shaft. On the other hand, the flange of the operating component is inserted through the mounting portion such that the assembly center of the shaft when the operating component is assembled is located at a different location from the operating center of the shaft during use. When the operating part is rotated around an axis located at the assembly center with the flange inserted into the through hole and the operating part is slid so that the same axis coincides with the operating center, The gist of the present invention is a fixing structure for an operating component, which includes a locking recess that engages with the locking protrusion to restrict rotation of the operating component.

[Function] When fixing an operating part to the panel, insert the flange of the operating part into the through hole. Then, the center of assembly of the shaft when the operating parts are assembled is located at a different location from the center of operation of the shaft during use.

Next, with the flange inserted into the through hole, the operating component is rotated about an axis located at the assembly center, and the operating component is slid so that the same axis coincides with the operating center. Then, the locking protrusion engages with the locking recess, and rotation of the operating component is restricted.

Further, in this state, the mounting portion is sandwiched between the flange and the operating component.

[Example 1] An example embodying the present invention will be described below with reference to FIGS. 1 to 8.

FIG. 1 is an exploded perspective view showing a mounting part 1 provided on a heater control panel 4 and a rotary blower switch 2 as an operating component fixed to this mounting part 1. The main body 3 of the blower switch 2 has a substantially cylindrical shape, and a support shaft 5 projecting forward is integrally formed at the center of its front surface (left side in FIG. 1).

A flange 6 is integrally formed on the outer periphery of the front half of the support shaft 5. The front part of the flange 6 has a circular shape having approximately the same diameter as the support shaft 5, and the rear part of the flange 6 has an elliptical shape extending in the vertical direction. Further, as shown in FIG. 5, the rear surface of the flange 6 has a tapered surface 6a whose diameter decreases at the rear end.

FIG. 2 is a front view of the main body 3, in which a first locking protrusion 7 is formed below the support shaft 5 on the front surface of the main body 3. The first locking protrusion 7 has a square plate shape,
Both left and right sides thereof are tapered surfaces 7a. Also,
A second locking protrusion 8 is formed on the front surface of the main body 3 above the support shaft 5 . The second locking protrusion 8 has a square plate shape larger than the first locking protrusion 7, and both left and right side surfaces and the lower side thereof have tapered surfaces 8a.

It is 8b.

As shown in FIG. 3, the main body 3 includes a blower motor (
A shaft 9 is provided for changing the rotational speed of the motor (not shown) by switching electrical contacts (not shown).

The shaft 9 is inserted into and supported by a through hole 5a that passes through the front end of the main body portion 3 and the support shaft 5 back and forth. The front end of the shaft 9 is exposed from the flange 6, and an operating knob 10 is provided on this exposed portion.
is installed. Further, on the rear end side of the shaft 9, a plurality of electrical contacts are provided which are switched by the rotation of the coaxial shaft 9, and each of the electrical contacts is electrically connected to a blower motor or the like.

On the other hand, as shown in FIGS. 4 and 5, the mounting portion 1 is formed into a cylindrical shape with a bottom. A through hole 11 having a vertically elongated oval shape is provided at the rear end of the mounting portion 1 so that the flange 6 can be inserted therethrough. Here, since the position of the shaft 9 when the flange 6 is inserted into the through hole 11 is the position of the shaft 9 when the blower switch 2 is assembled, the axis of this shaft 9 will be the center of the assembly from now on. It's called A. On the other hand, the position of the shaft 9 after the blower switch 2 is assembled, that is, the axial center of the shaft 9 during use, will be referred to as the operating center B hereinafter. Note that the assembly center A is slightly offset downward from the operation center B by a length (approximately 2 mm in this example), and when the flange 6 is inserted into the through hole 11, the shaft 9 is positioned at the assembly center A. It is supposed to be done.

A first locking recess 12 is cut out in the lower part of the rear end surface of the mounting part 1, and a first guide groove 13 extends from the first locking recess 12 to the outer periphery of the lower right side of the mounting part 1. It extends upward along the shape. The depths of these first locking recesses 12 and first guide grooves 13 are the same at all locations. When the flange 6 is inserted into the through hole 11 (
6), the first locking protrusion 7 is located above the first guide groove 13, and when the blower switch 2 is rotated 90 degrees clockwise from this state, the first locking protrusion 7 is located above the first guide groove 13. Locking protrusion 7
reaches the first locking recess 12.

A second locking recess 14 is cut out in the upper part of the rear end surface of the mounting part 1, and a step part 14a that is slightly deeper than the rear end surface of the mounting part 1 is formed in the lower part of the second locking recess 14. It is provided. A second guide groove 15 extends downward from the stepped portion 14 a along the outer circumferential shape of the upper left side of the attachment portion 1 .

The second guide groove 15 includes an inclined surface 15a that gradually deepens downward from the stepped portion 14a, and the inclined surface 15a.
The vertical surface 15b has the same depth as the deepest part of the vertical surface 15b.

When the flange 6 is inserted into the through hole 11 (see FIG. 6), the second locking protrusion 8 is positioned on the vertical surface 15b, and from this state, the blower switch 2 is rotated clockwise. to 9
When rotated by 0°, the second locking protrusion 8 reaches the second locking recess 14.

When installing the blower switch 2 on the mounting part 1,
First, as shown in FIGS. 5 and 6, the angle and direction of the blower switch 2 are adjusted so that the first and second locking protrusions 7 and 8 are positioned on the left and right sides. Subsequently, the flange 6 of the blower switch 2 is inserted into the through hole 11 of the attachment part 1, and the front surface of the main body part 3 is brought into contact with the rear surface of the attachment part 1. In this state, the first locking protrusion 7 is placed above the first guide groove 13, and the second locking protrusion 8
are located on the vertical surface 15b of the second guide groove 15, and the shaft 9 is located at the assembly center A.

Therefore, the main body 3 is rotated 90° clockwise about the axis 9. Then, as shown in FIGS. 7 and 8, the first locking projection 7 is moved into the first position by the first guide groove 13.
is guided to the lower part of the locking recess 12. The second locking protrusion 8 is gradually pushed rearward by the inclined surface 15a in the process of passing through the second guide groove 15, and then moves to the second locking recess 14.
is guided onto the stepped portion 14a.

At this time, the shaft 9 remains displaced downward from the operation center B. Further, since the locking protrusions 7 and 8 only come into contact with one side of the corresponding locking recesses 12 and 14, further rotation of the main body 3 is restricted, but in the opposite direction. rotation is possible.

Next, the main body part 3 is pushed up slightly from the above state.

Then, as shown in FIGS. 3 and 4, the first locking protrusion 7 slides to the upper part of the first guide groove 13, and the second
The locking protrusion 8 climbs over the stepped portion 14a, is released from the pushing up force, and slides to the upper part of the second locking recess 14. Then, the shaft 9 extends from the assembly center A to the operation center B.

In this state, the first locking protrusion 7 is connected to the first locking recess 12.
The second locking protrusion 8 contacts the second locking recess 14 . Therefore, the blower switch 2 cannot rotate relative to the mounting portion 1. In particular, in this embodiment, each of the locking protrusions 7, 8
Since both the left and right side surfaces are tapered surfaces 7a, 8a, even if there is some play between the locking protrusions 7, 8 and the locking recesses 12, 14, the tapered surfaces 7a, 8a Absorb play.

Further, as described above, the second locking protrusion 8 and the stepped portion 14a
Even if there is some play between the two, the tapered surface 8b of the second locking protrusion 8 comes into contact with the upper edge of the step part 14a, absorbing the play. Therefore, no play occurs between the locking protrusions 7, 8 and the locking recesses 12, 14 both in the rotational direction and in the sliding direction (vertical direction).

Furthermore, when the blower switch 2 is attached to the attachment part 1, the rear part of the attachment part 1 is sandwiched between the flange 6 and the main body part 3 from the front and back. Therefore, the blower switch 2 is locked to the mounting portion l so that it cannot be removed or removed. In this embodiment, since the tapered surface 6a is formed on the rear surface of the flange 6, even if there is some play between the flange 6 and the rear part of the mounting portion l, the tapered surface 6a absorbs the play and the gap between the two is To reliably prevent rattling from occurring.

After the blower switch 2 is attached to the attachment part 1, the operating knob 10 is attached to the shaft 9 from the front side of the attachment part I. When the operating knob 10 is attached, the mounting portion 1 restricts the operating knob 10 from moving in directions other than the rotational direction. Therefore, the blower switch 2 connected to the operating knob 10 via the shaft 9 becomes immovable with respect to the mounting portion 1.

As described above, according to this embodiment, the blower switch 2 can be installed with extremely simple work without using the conventional nut 59.
can be firmly fixed to the mounting part 1. Therefore, the nut 59 and its tightening work are not required, and the number of parts and assembly man-hours can be reduced.

It should be noted that the present invention is not limited to the configuration of the above-described embodiment (for example, changes may be made as desired without departing from the spirit of the invention, as described below.

(1) The shapes of the flange 6 and the through hole 11 are not particularly limited as long as they are other than circular.

(2) The second guide groove 15 may be formed obliquely like the first guide groove 13.

(3) From the perspective of locking the blower switch 2 attached to the mounting portion 1 only in a non-rotatable manner, the second locking protrusion 8. The second locking recess 14 and the second guide groove 15 may be omitted.

(4) In addition to rotary switches, the present invention can be applied to various operating parts such as toggle switches, bush switches, rotary variable resistors, and rotary variable capacitors.

[Effects of the Invention] As detailed above, according to the operation component fixing structure of the present invention, the operation component can be reliably fixed to the panel with a simple operation without using nuts, and the number of components and assembly can be reduced. This has the effect of reducing the number of man-hours required.

[Brief explanation of drawings]

1 to 8 show an embodiment embodying the present invention.
The figure is a partial perspective view of the attachment part and the blower switch, Figure 2 is a front view of the blower switch, Figure 3 is a partial sectional view showing the blower switch fixed to the attachment part, and Figure 4 is the third 5 is a partial sectional view showing the flange of the blower switch inserted into the through hole of the mounting part,
Fig. 6 is a sectional view taken along line VI-VI in Fig. 5, Fig. 7 is a partial sectional view showing a state where the blower switch is rotated 90 degrees from the state shown in Fig. 5, and Fig. 8 is a - ■It is a line cross-sectional view,
Figures 9 and 10 show the prior art, Figure 9 is an exploded perspective view showing the state before the blower switch is assembled to the heater control panel, and Figure 1O is the state where the blower switch is assembled to the heater control panel. FIG. ■... Mounting part, 2... Prower switch as an operating part, 4... Heater control panel, 5... Support shaft, 6... Flange, 7... First locking protrusion Department, 9・
... shaft, 11 ... through hole, 12 ... first locking recess,
A: Assembly center, B: Operation center. Patent applicant Toyoda Gosei Co., Ltd.

Claims (1)

[Claims] 1. Attach the operating part (2) to the mounting part (4) of the panel (4) so that the shaft (9) of the operating part (2) passes through the panel (4).
1), the operating component (2) includes: a support shaft (5) that protrudes toward the mounting portion (1) and covers the base end of the shaft (9); It has a flange (6) formed at the tip, and a locking protrusion (7) that protrudes toward the attachment part (1) from a different part from the support shaft (5), while the attachment part (1) ) is the assembly center (
a through hole (11) into which the flange (6) of the operating part (2) is inserted so that A) is located at a location different from the operating center (B) of the shaft (9) during use; With the flange (6) inserted into the through hole (11),
The operation part (2) is rotated around the shaft (9) located at the assembly center (A), and the same axis (9) is located at the operation center (B).
When sliding the operating part (2) to match the
A fixing structure for an operating component, comprising a locking recess (12) that engages with the locking protrusion (7) to restrict rotation of the operating component (2).