JPH07107820B2 - 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.
The heater control panel is equipped with a blower switch for turning on and off the rotation speed of a blower motor, which is a blower such as a heater and an air conditioner, and for switching the rotation speed in several stages.

There are various types of blower switches such as rotary type, toggle type and slide type.For example, in the case of rotary type, the blower switch 51 is fixed to the heater control panel 52 with the structure shown in FIGS. 12 and 13. There is.

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. 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 mounting portion 56.

Therefore, the shaft 54 of the blower switch 51 is attached to the through hole 57 of the mounting portion 56.
When the projection 55 is inserted into the locking hole 58 and 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-mentioned circumstances, and its purpose is to reliably fix operating components such as a blower switch to a panel such as a heater control panel by a simple operation without using a nut. An object of the present invention is to provide a fixing structure for an operation component capable of reducing the number of parts and the number of assembling steps.

[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 supporting shaft that projects toward the mounting portion and covers the base end of the shaft; a flange that is formed at the tip of the supporting shaft; and a protrusion or a recess that is formed at a portion different from the supporting shaft. On the other hand, the mounting portion communicates with the through hole, through which the flange of the operation component can be inserted, a projection or a recess or projection that engages with the projection when the flange is inserted through the through hole, and the through hole. ,
In addition, with the protrusion engaged with the recess, a communication hole with which the support shaft engages when the operation component is rotated about the protrusion so that the shaft is located at a predetermined portion. The gist of the invention is the fixing structure of the operation parts provided.

[Operation] When fixing the operation part to the panel, the flange of the operation part is inserted into the through hole and the projection is inserted into the hole. Then, when the operation component is rotated around the protrusion, the support shaft of the operation component moves from the through hole to the communication hole and engages with the communication hole. In this state, the shaft of the operation component is located at a predetermined portion, and the mounting portion is sandwiched between the flange and the operation component.

[First Embodiment] A first 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, and FIG. It is a fragmentary sectional view showing a state. 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 the front surface (left side surface in FIGS. 1 and 2) of the main body 3. A flange 6 is formed on the outer periphery of the front half of the support shaft 5.

As shown in FIG. 3, the flange 6 has two kinds of arc-shaped outer peripheral surfaces having different curvatures, and the front surface thereof has a non-circular shape. Further, as shown in FIG. 2, the rear surface of the flange 6 is a tapered surface 6a whose diameter decreases toward the rear side. The inclination angle of the taper surface 6a is the same at any part. The main body 3
On the front surface of the above, a low cylindrical protrusion 7 is formed above the support shaft 5.

The main body 3 is provided with a shaft 8 for changing the rotation speed of a blower motor (not shown) by switching electrical contacts (not shown). The shaft 8 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 8 is exposed from the flange 6, and the operating knob 9 is attached to this exposed portion.
Further, a plurality of electric contacts that are switched by rotation of the coaxial shaft 8 are provided on the rear end side of the shaft 8, and the electric contacts are electrically connected to a blower motor or the like.

On the other hand, as shown in FIGS. 1 and 5, the mounting portion 1 is formed in a bottomed cylindrical shape. A through hole 11 having substantially the same shape as that of the flange 6 is formed in a portion of the inner bottom portion 10 of the mounting portion 1 slightly displaced from the axis A thereof so that the flange 6 can be inserted therethrough. A recess 12 into which the projection 7 is engaged when the flange 6 is inserted therethrough is provided above the through hole 11.

The support shaft 5 of the blower switch 2 is provided at the center of the inner bottom portion 10.
A communication hole 13 having substantially the same diameter as that of the communication hole 13 is provided, and the communication hole 13 communicates with the through hole 11. Therefore, when the blower switch 2 is rotated around the protrusion 7 in the direction of arrow C in FIG. 5 with the protrusion 7 engaged with the recess 12, the support shaft 5 engages with the communication hole 13. To meet. The boundary between the through hole 11 and the communication hole 13 is a pair of holding projections 14 for holding the engagement state of the support shaft 5 with the communication hole 13.

When installing the blower switch 2 on the mounting part 1,
First, as shown in FIGS. 4 and 5, the flange 6 of the blower switch 2 is inserted into the through hole 11 of the mounting portion 1 and the recess 12 is formed.
Insert the protrusion 7 into the inside. In this state, the axis A of the mounting portion 1 and the axis B of the main body portion 3 are deviated from each other.

Therefore, the front surface of the main body portion 3 is brought into contact with the rear surface of the mounting portion 1, and the main body portion 3 is rotated about the protrusion 7 in the direction of arrow C in FIG. Then, the outer peripheral portion of the support shaft 5 moves on the movement locus E and comes into contact with one of the holding projections 14. Therefore, the holding protrusion 14 blocks the rotation of the main body 3. Here, when a large rotational force is applied to the main body 3 so that the support shaft 5 passes over the holding projection 14, the support shaft 5 is moved as shown in FIGS.
Passes through the holding projection 14 and engages with the communication hole 13.

When the support shaft 5 is engaged with the communication hole 13, the inner bottom portion 10 of the mounting 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. Particularly in this embodiment, the flange 6
Since the taper surface 6a is formed on the rear surface, even if there is some play between the flange 6 and the inner bottom portion 10 of the mounting portion 1, the taper surface 6a absorbs the play and backlash occurs between the two. Surely prevent.

Further, when the support shaft 5 is engaged with the communication hole 13, a slight gap is generated between the two. However, since the inclination angle of the taper surface 6a is the same in any part, the taper surface 6a
Uniformly contact the peripheral edge of the communication hole 13. Therefore, when the support shaft 5 is engaged with the communication hole 13, the support shaft 5 is moved to the center of the communication hole 13, and the axis A of the mounting portion 1 and the axis B of the main body portion 3 coincide with each other. Therefore, after assembling the blower switch 2,
There is no need to do that exact alignment.

Further, in this embodiment, since the pair of holding projections 14 are formed at the boundary between the through hole 11 and the communication hole 13, the engagement state of the support shaft 5 with respect to the communication hole 13 is held by both the holding projections 14. . Therefore, the support shaft 5, which has once engaged with the communication hole 13, cannot be applied to the support shaft 5 unless a large force enough to get over the holding projections 14 is applied.
It does not rotate in the opposite direction, that is, toward the through hole 11 side.

When the blower switch 2 is attached to the attachment portion 1, the operation knob 9 is attached to the shaft 8 from the front side of the attachment portion 1.
When the operation knob 9 is attached, the mounting portion 1 restricts the operation knob 9 from moving in a direction other than the rotational direction. Therefore, the blower switch 2 connected to the operation knob 9 via the shaft 8 cannot move with respect to the mounting portion 1.

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

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS.

In this embodiment, as shown in FIGS. 6 and 11, a protrusion 6b protruding outward in the radial direction is formed on the outer periphery of the flange 6 of the blower switch 2.
And the through hole 11 of the mounting portion 1 is formed in a shape corresponding to the flange 6. Further, as shown in FIGS. 7 and 8, a locking claw 15 extending in the circumferential direction is integrally formed at the lower rear end of the mounting portion 1. The locking claw 15 is configured to bend in the radial direction. The configuration other than the above is the same as that of the first embodiment.

When the blower switch 2 is mounted on the mounting portion 1 of this embodiment, first, as shown in FIG. 11, the flange 6 is inserted into the through hole 11 and the projection 7 is inserted into the recess 12. Then, the main body 3 is rotated in the direction of arrow D in FIG. Then, the flange 6 moves and the projection 6b comes into contact with the tip of the locking claw 15, so that the locking claw 15 blocks the rotation of the main body 3. Therefore, when the rotational force is continuously applied to the main body portion 3, the locking claw 15 allows the bending flange 6 to rotate radially outward. Then, as shown in FIG. 10, the protrusion 6b of the flange 6 engages with the tip of the locking claw 15.

Therefore, according to the present embodiment, in addition to the same operation and effect as the first embodiment, the protrusion 6b of the flange 6 is engaged with the tip of the locking claw 15 so that it cannot rotate. Therefore, the holding projection 14 in the first embodiment is unnecessary.

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) Although the front surface of the flange 6 is non-circular in the first embodiment, it may be circular.

(2) The positional relationship between the projection 7 and the recess 12 may be reversed, that is, the recess 12 may be provided on the front surface of the main body 3 of the blower switch 2 and the projection 7 may be provided on the rear surface of the mounting portion 1. The same operation and effect as those of the above-described embodiment are obtained.

(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 5 show a first embodiment embodying the present invention, FIG. 1 is a perspective view of a mounting portion and a blower switch, and FIG. 2 is a partial sectional view showing a state in which the blower switch is fixed to the mounting portion. , Fig. 3 is a sectional view taken along line III-III in Fig. 2, Fig. 4 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, and Fig. 5 is a VV line in Fig. 4. 6 to 11 show a second embodiment of the present invention, FIG. 6 is a perspective view of a mounting portion and a blower switch, FIG. 7 is a partial sectional view of the mounting portion, and FIG. 7 is a sectional view taken along line VIII-VIII, FIG. 9 is a partial sectional view showing a state where the blower switch is fixed to the mounting portion, FIG. 10 is a sectional view taken along line XX of FIG. 9, and FIG. 11 is a transparent portion of the mounting portion. FIG. 12 is a partial cross-sectional view showing a state in which a flange of a blower switch is inserted into a hole, FIGS. 12 and 13 show a conventional technique, and FIG. 12 shows a heater control panel. Exploded perspective view showing a state before assembly of the lower switch, FIG. 13 is a partial sectional view showing a state in which assembled the blower switch the heater control panel. 1 ... Mounting part, 2 ... Blower switch as operation part, 4 ... Heater control panel, 5 ... Support shaft, 6
…… Flange, 7 …… Projection, 8 …… Shaft, 11 …… Through hole, 12
...... Concave part, 13 ...... communication hole.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-21011 (JP, A) actual opening Sho 55-17300 (JP, U) actual opening Sho 55-100620 (JP, U) actual opening Sho 62- 123037 (JP, U) Actual flat 2-84234 (JP, U) Actual public Sho-23-23118 (JP, Y1)

Claims (1)

[Claims] 1. A shaft (8) 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 (8 And a flange (6) formed on the tip of the support shaft (5).
And a protrusion (7) formed in a portion different from the support shaft (5)
Alternatively, the mounting portion (1) has a through hole (11) through which the flange (6) of the operating component (2) can be inserted, and a flange (6) in the through hole (11). The recess (12) or the projection engaging with the projection (7) or the recess when inserted is communicated with the through hole (11), and the projection (7) is engaged with the recess (12). In this state, the shaft (8) is located at a predetermined portion, and the communication hole (the communication shaft (5) engages when the operating component (2) is rotated about the protrusion (7). 13) Fixing structure for operation parts, characterized by having and.