JP2848910B2 - Control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a control device used for heater control of an automobile and the like.

(Prior Art) Conventionally, as shown in FIG. 7, a control device rotates a control lever 54 via gears 52 and 53 by a rotation operation of an operation knob 51, and is connected to the control lever 54. In some cases, the control wire 55 is reciprocated to drive an operation target (not shown).

In this embodiment, the gear 52 is supported by a panel 59 and a bearing 58 projecting from a base 57 by a shaft 56.

(Problems to be Solved by the Invention) However, in the conventional control device, the operation knob 51, the gear 52, and the shaft 56 are separate components, and the shaft 56
When inserting through the bearing portion 58 and the panel 59, the operation knob 51 must be attached after the gear 52 has been inserted and the retaining ring 60 has been used to prevent the gear from being removed, so that the number of parts is large and assembly is difficult. There was a problem.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a control device that has a small number of components and is easy to assemble.

(Means for Solving the Problems) In order to achieve the above object, the present invention relates to a bearing 18 provided on a base 15 with a substantially conical shaft 8 formed at one end as shown in FIG. The other end having the shaft insertion hole 10 is
A gear 5 disposed in the vicinity of a support wall 17 provided on the gear 5 and an operation rotatably supported by a support hole 30 provided in the support wall 17 and rotatably inserted through a shaft insertion hole 10 of the gear 5. An operation knob 6 having a shaft 26 and a drive lever 7 rotatably mounted on the base 15 and having a tooth portion 33 meshing with the gear 5 and having a connecting portion 35 to which a control member 34 is connected. It is a thing.

(Operation) According to the above configuration, first, the drive lever 7 is attached to the base 15, and the substantially conical shaft 8 at one end of the gear 5 is attached to the base 15.
After the other end is brought close to the support wall 17 and the shaft insertion hole 10 is aligned with the support hole 30 of the support wall 17, the operation shaft 26 of the operation knob 6 is inserted into the support hole 30. The gear 5 is further inserted through the shaft insertion hole 10 of the gear 5. As a result, one end of the gear 5 is engaged with the bearing portion 18 of the base 15, and the other end is
It is supported by the support hole 30 of the support wall 17 via 26 and is rotatably assembled.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 and 2 show a heater control device for an automobile to which the present invention is applied. In FIG. 2, reference numeral 1 denotes a ventilation mode switching device, 2 denotes a temperature control device, 3 denotes an outside air switching device,
4 is an air volume adjusting device.

As shown in FIG. 1, each of the blow mode switching device 1 and the temperature control device 2 includes a gear 5, an operation knob 6, and a drive lever 7.

As shown in FIG. 3, the gear 5 is a bevel gear, and a shaft 8 having a substantially conical shape and a hemispherical tip is protruded at one end, and a rotor 9 is integrally provided at the other end. A shaft insertion hole 10 is formed. The gear 5 is mounted on one half of the outer peripheral surface of the rotor 9 (left side with respect to the boundary C shown in FIG. 3) so that the gear 5 can be attached to both the blow mode switching device 1 and the temperature control device 2. , Blow mode switching device 1
A large-pitch moderation groove 11a for the temperature control device 2 is formed on the other half (right side with respect to the boundary C shown in FIG. 3). .

In addition, the end face of the rotor 9 is located radially from the center (third direction).
(In the direction parallel to the boundary line C shown in the figure)
12 are protruding. The inner surface of the shaft insertion hole 10 has a boundary line C
At the positions facing each other in the direction, engagement grooves 13, 13 are formed in the longitudinal direction, and in the depth of the shaft insertion hole 10, the slits 14, 13 are located at positions facing each other in a direction perpendicular to the boundary line C direction. 1
4 (see FIG. 6).

The gear 5 is engaged with a bearing 18 formed such that the conical shaft 8 faces a panel 17 which is a support wall on the book surface of a cylindrical support shaft 16 provided on a base 15, and 9 fits into a U-shaped holding portion 19 formed on the inner surface of panel 17, and protrusion 12 is arranged close to panel 17.
As shown in FIG. 6, a ball 22 accommodated in a hole 20 formed in the holding portion 19 of the panel 17 by being biased by a spring 21 in a direction protruding from the hole 20 is accommodated in a moderation groove of the rotor 9. Engagement with 11a or 11b enables positioning with a sense of moderation.

As described above, the gear 5 is turned upside down and its moderation groove 11a or 11b is engaged with the ball 22 to be used for the air blowing mode switching device 1 and for the temperature control device 2. In order to prevent this erroneous assembly, a regulating projection 23 is provided on the holding portion 19 of the panel 17 so as to project therefrom.

That is, as shown in FIG. 4, the regulating protrusion 23 for the left air blowing mode switching device 1 is provided on the right side in the drawing of the holding portion 19, and the regulating protrusion 23 for the right temperature control device 2 is provided on the holding portion 19. In FIG. 19, it protrudes to the left. Therefore,
In the left side and the blow mode switching device 1, the gear 9 can be fitted into the holding portion 19 if the moderation groove 11b of the small pitch is directed upward and the protrusion 12 is directed to the left in the drawing. However, when the protrusion 12 is turned upside down and turned to the right, the protrusion 12 hits the regulating protrusion 23, so that the protrusion 12 cannot be fitted into the holding portion 19, thereby preventing erroneous assembly. The same applies to the temperature control device 2 on the right side.

The operation knob 6 is provided with a circular support plate 24 as shown in FIG.
A support shaft 25 and a tubular operation shaft 26 extend from the center of the support plate 24. The operation shaft 26 has a first rib 27 having a large protrusion allowance from the base to the tip.
a and a second rib 27b having a smaller allowance than the first rib 27a are provided so as to be located on opposite sides.

The operation knob 6 is provided in the concave portion 29, the support hole 30, and the restriction hole 31 formed on the outer surface of the panel 17, respectively.
The support shaft 25 and the operation shaft 26 are fitted and held rotatably, and the operation shaft 26 is inserted through the shaft operation hole 10 of the gear 5,
The first and second ribs 27a and 27b are engaged with the engagement grooves 13 and 13 so as to be integrally rotatable with the gear 5, and the claw portions 28 are engaged with the slits 14 and are irremovably attached. I have.

The regulating hole 31 of the panel 17 is provided with a directional operation knob 6.
In order to prevent assembling in the reverse direction, as shown in FIG. 5, a small-diameter hole, a semi-lunar hole, and a large-diameter meniscus hole are formed. That is, the first rib of the operation shaft 26
It can be inserted only when 27a is on the large-diameter edge side of the restriction hole 31.

As shown in FIGS. 1 and 6, the drive lever 7 has a ring-shaped base portion 32 having one end formed with a tooth portion 33 as a bevel gear segment, and the other end connected to a control wire 34 as a control member. A connecting portion 35 is protruded. The drive lever 7 has a base portion 32 fitted to the support shaft portion 16 of the base 15 so as to be rotatable, and a tooth portion 33 is meshed with the gear 5.

As a result, in the blow mode switching device 1 and the temperature control device 2, by rotating the operation knob 6, the gear 5 is rotated.
The drive lever 7 is rotated via the
Moves forward and backward, and an operated body (not shown) provided at the other end of the control wire 34 is driven.

On the other hand, as shown in FIG. 1, the outside air switching device 3 has a control wire 42 connected to one end of a control lever 41 rotatably attached to the base 15 with an attachment screw 40, and a slit 43 ( An operation knob 44 is attached to the other end projecting from FIG. 2) so as to be able to reciprocate left and right. The hemispherical portion 46 of the tip of the spring piece 45 fixed to the control lever 41 is engaged with a moderation groove 47 formed in the base 15 to regulate the position.

The air volume adjusting device 4 is a rotary switch, and a panel 17 is provided.
By turning the operation knob 48 that projects more, the fan can be switched on and off and the air volume.

In FIG. 1, reference numeral 49 denotes a lamp provided on the panel 17 for illuminating various displays.

In the heater control device having the above configuration, in particular, the blow mode switching device 1 and the temperature control device 2
It can be easily assembled to the base 15 as follows.

First, the drive lever 7 is attached to the support shaft portion 16 of the base 15, and the shaft portion 8 of the gear 5 is engaged with the bearing portion 18 of the base 15 obliquely from above as shown by a two-dot chain line in FIG. The other end of the rotor 9 is fitted into the holding portion 19 of the panel 17 so as to approach the panel 17, and the shaft insertion hole 10 is matched with the support hole 30 of the panel 17. As a result, the gear 5 meshes with the teeth 33 of the drive lever 7. Subsequently, the operation shaft 26 of the operation knob 6 is moved from the restriction hole 31 to the gear 5.
And the support shaft 25 is fitted into the support hole 30. As a result, the operation shaft 26 has its first and second ribs 27a,
27b engages with the engaging grooves 13 and 13 of the shaft insertion hole 10 of the gear 5 so that it can rotate integrally with the gear 5, and its claw 28 engages with the slit 14 of the gear 5 so that it cannot be removed. Fit. Therefore, the gear 5
The shaft 8 at one end is engaged with the bearing 18 of the base 15, and the other end is supported by the support hole 30 of the panel 17 via the operation shaft 26 and the support shaft 25 of the operation knob 6 so as to be rotatable. Assembled.

(Effects of the Invention) As is apparent from the above description, according to the present invention, the shaft portion of the gear is engaged with the bearing portion of the base and inserted into the shaft insertion hole at the other end and the support hole of the support wall. Assembly can be performed quickly by simply inserting the operation shaft of the operation knob, so that the assembly operation can be performed quickly. In addition, there is no need for a member such as a retaining ring for retaining the shaft of the gear, and since the operation knob and the operation shaft are integrated, the number of parts is small and the operation is simple. I have.

[Brief description of the drawings]

1 and 2 are a plan view, a panel front view, and a third view, respectively, of a vehicle heater control device to which the present invention is applied.
FIG. 4 is an exploded perspective view of a gear and an operation knob, FIG. 4 is a plan view showing a state in which the gear is being assembled, FIG. 5 is a front view of a regulating hole,
FIG. 6 is a sectional view of a control device, and FIG. 7 is a plan view of a conventional control device. 5 ... gear, 6 ... operation knob, 7 ... drive lever, 8 ... shaft, 10 ... shaft insertion hole, 15 ... base, 17 ... panel (support wall), 18 ... bearing, 26 ... Operation shaft, 30 ... Support hole, 33 ... Tooth, 34 ... Control wire (control member), 35 ... Connection.

Claims (1)

(57) [Claims] A gear having a substantially conical shaft formed at one end engaged with a bearing provided on a base, the other end having a shaft insertion hole disposed close to a support wall provided on the base; An operation knob rotatably supported by a support hole provided in the support wall and having an operation shaft inserted into the shaft insertion hole of the gear so as to be rotatable integrally therewith; rotatably attached to the base and meshing with the gear; A control device, comprising: a drive lever having a tooth portion and a connecting portion to which a control member is connected.