JPH0833788B2 - Fixed structure for operating parts - Google Patents

Description

The present invention relates to a structure for fixing operation parts such as a rotary switch, a toggle switch, a push switch, a rotary variable resistor and a rotary variable capacitor to a panel. .

[Prior Art] Generally, a heater control panel for adjusting the temperature inside the vehicle is incorporated in the front part of the driver's seat of the vehicle. This heater control panel turns on and off the rotation speed of the blower motor, which is a blower for heaters, air conditioners, etc.
A blower switch that enables or changes in steps is installed. The blower switch has a rotary type, toggle type,
There are various types such as a slide type, but in the case of a rotary type, for example, the blower switch 51 is fixed to the heater control panel 52 with the structure shown in FIGS.

A male screw 53 is protrudingly provided on 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. A protrusion 55 is provided near the male screw 53 of the blower switch 51. On the other hand, the heater control panel 52 is provided with a cylindrical mounting portion 56. Mounting part 56
A through hole 57 into which the male screw 53 of the blower switch 51 can be inserted and a locking hole 58 into which the protrusion 55 can be inserted are provided in the inner bottom portion of the.

Therefore, attach the shaft 54 of the blower switch 51 to the through hole of the mounting portion 56.
While inserting it into 57, insert the protrusion 55 into the locking hole 58,
When the nut 59 is screwed into the male screw 53 in this state, the blower switch 51 is fixed to the mounting portion 56 so as not to fall off and to rotate. After fixing the blower switch 51, the display plate 60 is attached to the front surface of the heater control panel 52, and the operation knob 61 is attached to the shaft 54.

[Problems to be Solved by the Invention] However, in the prior art, since the nut 59 is fastened to the male screw 53 of the blower switch 51 that is inserted into the through hole 57 of the mounting portion 56, only the nut 59 is required for parts. There is a problem that not only the number of points increases, but also the number of steps increases due to the tightening process of the nut 59.

The present invention has been made in view of the above circumstances,
The purpose is an operation that can securely fix the operation parts such as the blower switch to the panel such as the heater control panel by a simple work without using nuts, and can reduce the number of parts and the assembly process. It is to provide a fixing structure for parts.

[Means for Solving the Problems] In order to achieve the above object, the present invention is a structure for fixing an operating component to a mounting portion of the panel so that a shaft of the operating component is inserted through the panel. A support shaft projecting toward the mounting portion and covering a base end portion of the shaft; a flange formed at a tip end portion of the supporting shaft; and a first engaging member protruding from a portion different from the support shaft toward the mounting portion. A stop projection and a second locking projection. On the other hand, the mounting portion is located at a position where a shaft mounting center when the operating component is mounted is different from a shaft operating center during use. Thus, the through hole through which the flange of the operating component is inserted, and the state where the flange is inserted through the through hole, the operating component is rotated about an axis located at the assembly center,
Also, when the operating component is slid so that the coaxial position coincides with the operation center, the first locking recess that engages with the first locking projection and restricts rotation of the operating component, and the shaft is operated. When the operating component is slid to match the center, the second
And a second locking recess for holding the shaft at the operation center by restricting the movement of the operating component in the direction along the panel surface by engaging with the locking projection of the operating component. This is the summary.

[Operation] When fixing the operation part to the panel, insert the flange of the operation part into the through hole. Then, the assembly center of the shaft when the operation component is assembled is located at a position different from the operation center of the shaft when used. Next, with the flange inserted in the through hole, the operating component is rotated about an axis located at the center of assembly, and the operating component is slid so that the coax coincides with the operating center. Then, the first locking protrusion engages with the first locking recess, and the rotation of the operating component is restricted. The second locking projection engages with the second locking recess to restrict movement of the operating component in the direction along the panel surface. Further, in this state, the mounting portion is sandwiched between the flange and the operating component.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS.

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

A flange 6 is integrally formed on the outer periphery of the front half of the support shaft 5. The front portion of the flange 6 has a circular shape having substantially the same diameter as the support shaft 5, and the rear portion 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 is a tapered surface 6a whose diameter decreases toward the rear side.

FIG. 2 is a front view of the main body portion 3, and on the front surface of the main body portion 3, a first locking protrusion 7 is provided below the support shaft 5.
Are formed. The first locking projection 7 has a rectangular plate shape, and the left and right side surfaces of the first locking projection 7 are tapered surfaces 7a. Further, on the front surface of the main body portion 3, a second locking projection 8 is formed above the support shaft 5. The second locking projection 8 has a rectangular plate shape larger than the first locking projection 7, and the left and right side surfaces and the lower side surface thereof are tapered surfaces 8a, 8 respectively.
It is b.

As shown in FIG. 3, the main body 3 is provided with a shaft 9 for changing the rotation speed of a blower motor (not shown) by switching electrical contacts (not shown). The shaft 9 is inserted into and supported by a through hole 5a that penetrates the front end of the main body 3 and the support shaft 5 in the front-rear direction. The front end of the shaft 9 is exposed from the flange 6, and the operation knob 10 is exposed on this exposed portion.
Is attached. Further, on the rear end side of the shaft 9, a plurality of electric contacts that are switched by rotation of the coaxial shaft 9 are provided, and the electric contacts are 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 in a bottomed cylindrical shape. A through hole 11 having a vertically long elliptical shape is provided at the rear end of the mounting portion 1 so that the flange 6 can be inserted therethrough. The left and right side portions of the through hole 11 at the rear end of the mounting portion 1 are sandwiched by the main body portion 3 and the flange 6 to form a sandwiched portion 1a whose movement in the front-back direction along the shaft 9 is restricted. ing. The position of the shaft 9 when the flange 6 is inserted into the through hole 11 is the blower switch 2
Since this is the position of the shaft 9 during assembly,
The axis center of is referred to as the assembly center A hereinafter. On the other hand, the position of the shaft 9 after assembling the two blower switches, that is, the shaft center of the shaft 9 during use is hereinafter referred to as an operation center B. The assembly center A is slightly downward from the operation center B (about 2 m in this embodiment).
m) The shaft 9 is positioned at the assembly center A when the flange 6 is inserted into the through hole 11 by being displaced.

A first locking recess 12 is formed in the lower portion of the rear end surface of the mounting portion 1 so that the first locking recess 12 extends beyond the first locking recess 12.
The guide groove 13 extends upward along the outer peripheral shape on the lower right side of the mounting portion 1. The depths of the first locking recesses 12 and the first guide grooves 13 are the same at any part. Then, when the flange 6 is inserted into the through hole 11 (see FIG. 6), the first locking projection 7 is located above the first guide groove 13, and the blower switch 2 is pushed from this state. When rotated 90 ° in the clockwise direction, the first locking projection 7 reaches the first locking recess 12.

A second locking recess 14 is formed in the upper portion of the rear end surface of the mounting portion 1, and a step portion 14a slightly deeper than the rear end surface of the mounting portion 1 is formed in the lower portion of the second locking recess 14. It is provided. A second guide groove 15 extends downward from the stepped portion 14a along the left upper peripheral shape of the mounting portion 1. The second guide groove 15 is composed of an inclined surface 15a that gradually becomes deeper from the stepped portion 14a toward the lower side, and a vertical surface 15b having the same depth as the deepest portion of the inclined surface 15a.

Then, when the flange 6 is inserted into the through hole 11 (see FIG. 6), the second locking projection 8 is located on the vertical surface 15b, and from this state, the blower switch 2 is rotated clockwise. 90
When rotated by 2 °, the second locking projections 8 become the second locking recesses 14
It has come to.

When mounting the blower switch 2 on the mounting portion 1, first, as shown in FIGS. 5 and 6, the angle of the blower switch 2 is adjusted so that the first and second locking projections 7 and 8 are located on the left and right. And arrange the direction. Then, the flange 6 of the blower switch 2 is inserted into the through hole 11 of the mounting portion 1, and the rear surface of the mounting portion 1 is brought into contact with the front surface of the main body portion 3. In this state, the first locking projection 7 is located on the upper part of the first guide groove 13, the second locking projection 8 is 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 portion 3 is rotated clockwise by 90 ° about the shaft 9. Then, as shown in Figs. 7 and 8,
The first locking projection 7 is guided by the first guide groove 13 to the lower portion of the first locking recess 12. The second locking projection 8 is gradually pushed up rearward by the inclined surface 15a in the process of passing through the second guide groove 15, and then the step 14a of the second locking recess 14 is formed.
Guided above.

At this time, the shaft 9 remains displaced downward from the operation center B. Further, the two locking projections 7 and 8 have the corresponding locking recesses 1
Since only one of the side surfaces 2 and 14 is in contact with the side surface, rotation of the main body portion 3 is restricted, but rotation in the opposite direction is possible.

Next, the main body 3 is pushed up slightly from the above state. Then, as shown in FIGS. 3 and 4, the first locking projection 7
Slides over the first guide groove 13 and
The locking projection 8 of the above goes over the step 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 projection 7 is located in the first locking recess 12
And the second locking projection 8 contacts the second locking recess 14. Therefore, the blower switch 2 cannot rotate with respect to the mounting portion 1. In particular, in this embodiment, since the left and right side surfaces of each locking projection 7, 8 are tapered surfaces 7a, 8a, there may be some gap between the locking projections 7, 8 and both locking recesses 12, 14. Even if there is play, the tapered surfaces 7a and 8a absorb the play.

Further, similarly to the above, the second locking projection 8 and the step portion 14a
Even if there is some play between and, the taper surface 8b of the second locking projection 8 comes into contact with the upper edge of the step 14a to absorb the play. Therefore, both locking projections 7 and 8 and both locking recesses 12 and 14
There is no play between and in either the rotational direction or the sliding direction (vertical direction).

Further, when the blower switch 2 is attached to the attachment portion 1, the sandwiched portion 1a at the rear of the attachment portion 1 is sandwiched by the flange 6 and the main body portion 3 from the front and rear. Therefore, the blower switch 2 is locked to the mounting portion 1 so as not to slip off. In this embodiment, since the taper surface 6a is formed on the rear surface of the flange 6, even if there is some play between the flange 6 and the sandwiched portion 1a, the taper surface 6a absorbs the play and the gap between them is increased. Surely prevent backlash.

When the blower switch 2 is mounted on the mounting portion 1,
The operation knob 10 is attached to the shaft 9 from the front side of the mounting portion 1. When the operating knob 10 is mounted, the mounting portion 1 restricts the operating knob 10 from moving in a direction other than the rotational direction. Therefore, the blower switch 2 connected to the operation knob 10 via the shaft 9 cannot move with respect to the mounting portion 1.

As described above, according to the present embodiment, the blower switch 2 can be easily operated without using the nut 59 of the prior art.
Can be firmly fixed to the mounting portion 1. Therefore, the nut 59 and its tightening work are unnecessary, and the number of parts and the number of assembling steps can be reduced.

Note that the present invention is not limited to the configuration of the above-described embodiment, and may be arbitrarily modified within the scope not departing from the spirit of the invention as follows, for example.

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

(2) The second guide groove 15 may be formed in an inclined shape like the first guide groove 13.

(3) The present invention can be applied to various operation parts such as a toggle switch, a push switch, a rotary variable resistor, and a rotary variable capacitor in addition to the rotary switch.

[Advantages of the Invention] As described in detail above, according to the fixing structure for an operating component of the present invention, the operating component can be reliably fixed to the panel by a simple operation without using a nut. This has the effect of reducing the number of attachment steps.

[Brief description of drawings]

1 to 8 show an embodiment embodying the present invention.
The figure shows a partial perspective view of the mounting part and the blower switch, Fig. 2 is a front view of the blower switch, Fig. 3 is a partial sectional view showing a state where the blower switch is fixed to the mounting part, and Fig. 4 is IV of Fig. 3. -IV line sectional view, FIG. 5 is a partial sectional view showing a state in which the flange of the blower switch is inserted into the through hole of the mounting portion, FIG.
Fig. 5 is a sectional view taken along the line VI-VI in Fig. 5, Fig. 7 is a partial sectional view showing a state in which the blower switch is rotated 90 ° from the state shown in Fig. 5, and Fig. 8 is a sectional view taken along the line VIII-VIII in Fig. 7. Is the figure, the 9th, 1
Fig. 0 shows the prior art, Fig. 9 is an exploded perspective view showing a state before the blower switch is attached to the heater control panel, and Fig. 10 is a partial sectional view showing the state where the blower switch is attached to the heater control panel. Is. 1 ... Mounting part, 2 ... Blower switch as operation part, 4 ... Heater control panel, 5 ... Support shaft, 6
...... Flange, 7 ...... First locking protrusion, 9 ...... Shaft, 11 ...
… Through hole, 12… First locking recess, A… Assembly center, B…
… Mainly operation.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-4-19248 (JP, A) Actually opened 55-18723 (JP, U) Actually opened 59-39842 (JP, U) Actually opened 62- 169428 (JP, U) Actual Kaihei 3-79139 (JP, U) Japanese Patent Publication No. 43-12319 (JP, B1) Actual Publication No. 41-21861 (JP, Y1) US Patent 4392279 (US, A) US Patent 4715569 (US, A)

Claims (1)

[Claims] 1. A shaft (9) of an operating part (2) is a panel (4).
In the structure in which the operating component (2) is fixed to the mounting portion (1) of the panel (4) so that the operating component (2) is inserted, the operating component (2) projects toward the mounting portion (1) side and the shaft (9 And a flange (6) formed on the tip of the support shaft (5).
And a first locking projection (7) and a second locking projection (8) projecting from a portion different from the support shaft (5) toward the mounting portion (1) side.
On the other hand, in the mounting portion (1), the assembly center (A) of the shaft (9) when the operation component (2) is assembled is the operation center (B) of the shaft (9) when in use. A through hole (11) through which the flange (6) of the operating component (2) is inserted so that the flange (6) is inserted through the through hole (11) so as to be located at a position different from When the operating part (2) is rotated around the shaft (9) located at the center of attachment (A) and the operating part (2) is slid so that the coaxial (9) coincides with the operating center (B). , A first locking recess (12) that engages with the first locking projection (7) to restrict the rotation of the operating component (2), and the shaft (9) as the operation center (B). When the operating component (2) is slid to match, it engages with the second locking projection (8) and moves in the direction along the surface of the panel (4) of the operating component (2). A second locking recess (14) for restricting movement and holding the shaft (9) at the operation center (B).