JP2589132Y2 - Operating load application mechanism for air outlet damper opening / closing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper opening / closing device for an air outlet, and more particularly to an operating load applying mechanism for the same.

[0002]

2. Description of the Related Art Ventilation holes for ventilation and air conditioning in a vehicle cabin are provided in or near an instrument panel in front of a front seat of an automobile. The ventilation port is generally formed by fitting an air outlet formed of a cylindrical body or a box of a plastic molded product. This air outlet is provided with a damper for switching ventilation or controlling the amount of ventilation at the ventilation opening, and by operating a lever pivotally attached to the outer wall of the air outlet to rotate the damper, the air outlet of the air outlet is opened. Is controlled. FIG.
FIG. 7 shows an example thereof.

[0003] As shown in the figure, the damper opening / closing mechanism of the air outlet comprises an air outlet main body 50, a rotating arm 60 and an operation dial 70. The air outlet body 50 is made of a plastic box-shaped molded product,
A damper 52 that opens and closes a ventilation port 51 and regulates the amount of ventilation is pivotally mounted inside the opening. Reference numeral 80 denotes an adjusting unit that is attached to the air outlet 53 of the air outlet main body 50 and changes the wind direction.

The rotating arm 60 is rotated by the rotation of the operation dial 70 to open and close the damper 52, and is provided by connecting the damper 52 and the operation dial 70. Reference numeral 61 denotes a long hole, and 62 denotes a connection portion with a damper, which is fixed to a damper in the air outlet main body 51 via a mounting hole 56 provided in an outer side wall 55.

The operation dial 70 is for adjusting the opening of the damper 52 and comprises a dial body 71 and a connecting arm 72. In the outer peripheral portion of the dial main body 71, a scale-shaped operation portion 74 is provided on a side that appears on the outside (visible portion) of the instrument panel, and a sliding portion 75 is provided on the opposite side.
Is provided. As shown in FIGS. 8 and 9, the sliding portion 75 is for switching and fixing the opening degree of the damper 52 in the air outlet main body 51 with a sense of moderation, and includes a plurality of concave portions 76. In. This recess 76
When the tip of the pressing member 85, which will be described below, enters, the operator gives an appropriate switching feeling of the opening degree of the damper and fixes the opening degree in a stepwise manner. The recess 76
An appropriate number is provided according to the number of switching dampers. An engagement pin 73 is provided substantially at the distal end of the connection arm 72, and is slidably engaged with the long hole 61 of the rotation arm 60. Reference numeral 77 denotes an anti-rotation arc groove which engages with the pin member 57 erected on the outer side wall 55 to regulate the rotation range of the operation dial 70.

The operation dial 70 is a dial body 7
The bush portion 86 of the pressing member 85 is inserted into a center hole 78 provided at the center of the first member 1, and the bush portion 86 is fixed to the boss portion 58 by a set screw 90,
It is rotatably attached to the outer side wall 55.

Here, the boss 58 will be described. The boss portion 58 includes a cylindrical boss main body 54 inserted into a center hole 88 of the pressing member 85, and an annular rib 59 protruding outside the boss main body 54 and slidably in contact with the back surface of the operation dial 70. Reference numeral 81 denotes a circular spacer, and reference numeral 82 denotes a protrusion, a notch (not shown) in the center hole 88 of the bush portion 86.
And the position of the holding member 85 is fixed.

The holding member 85 is made of resin or the like, and includes a bush portion 86 and a holding arm 87. The bush portion 86 is fitted in the center hole 78 of the operation dial 70, and holds the operation dial 70 so as to be rotatable therearound. The holding arm 87 extends from the upper center of the bush portion 86, and as shown in FIGS.
The operation dial 70 is rotated, and the tip 89 of the arm enters the concave portion 76 of the sliding portion 75 and is brought into pressure contact with the operation dial 70, thereby temporarily fixing the rotation of the operation dial 70.
The second mode is to give an appropriate moderation feeling in the opening degree switching. Also, as understood from FIGS. 10 and 11,
When the pressing arm 87 rides on the sliding portion 75 by rotating the operation dial 70, the operation arm 70 elastically comes into pressure contact with the operation dial 70, and applies an appropriate operation load to the operation dial 70.

By the way, especially in summer, when the automobile is left outdoors for a long time, the temperature inside the automobile may rise to 80 ° C. or more. At this time, as shown in FIG. 11, when the holding arm by the damper opening / closing mechanism is in a state of being pressed against the sliding portion and riding up, the stress and the temperature in the vehicle cause the holding arm to remain in the riding shape due to the stress and the temperature inside the vehicle. May be deformed. In such a shape, the pressing arm cannot apply an appropriate load when moving between the sliding portion and the recessed portion due to the rotation of the operation dial. There is also a problem that the switching position is not reliably fixed.

[0010] Various methods and structures have been proposed to solve this problem. For example, there are a method in which a resin holding arm is made of metal, a method in which the holding arm is made of resin having high heat resistance, and a method in which a rib is provided in the holding arm.

However, the first and second methods have a problem that the cost of the holding arm is increased. Further, in the third method, there is a problem that the elasticity of the pressing arm becomes too high due to the rib, and the operability of the operation dial itself deteriorates.

[0012]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems, and has an inexpensive and simple structure. It is an object of the present invention to provide an operation load applying mechanism for a damper opening / closing device for an air outlet, which can maintain an appropriate moderation feeling and reliable operability of a dial.

[0013]

Means for Solving the Problems That is, the present invention provides:
By rotating the operation dial, the damper in the air outlet connected to the operation dial is rotated to adjust the opening thereof, and a plurality of recesses are formed on the outer periphery of the operation dial. And a holding arm having a press-contact end portion elastically pressed against the sliding portion is provided from above the rotation center of the operation dial, and an operation load is applied to the operation dial. In the mechanism to be provided, a projection is provided on the upper side of the sliding portion of the operation dial, and when the operation dial is rotated, the press-contact tip of the pressing arm slides while engaging with the projection. The present invention relates to an operation load applying mechanism in a damper opening / closing device for an air outlet, wherein the operating load imparting mechanism is configured to slide in a portion.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a front view of an operation dial showing an example of a damper opening / closing mechanism of an air outlet according to the present invention, FIG. 2 is a sectional view taken along the line 2-2, and FIG. 3 shows a rotating state of the operation dial shown in FIG. FIG. 4 is a front view of an operation dial showing another example of the present invention, and FIG. 5 is a cross-sectional view taken along line 5-5.

The mechanism of the present invention is suitably used for a general air outlet damper opening / closing mechanism shown and described in FIGS. An example is shown in FIGS. Note that, in the reference numerals in the drawings, the same reference numerals as those in FIGS. 6 and 7 indicate the same members. As shown in the figure, in the operation dial 10 using the mechanism of the present invention, a projection 15 is provided on the upper side of the sliding portion 13 of the dial main body 11. Reference numeral 12 denotes a connection arm, 14 denotes a concave portion, 18 denotes an adjustment portion, and 19 denotes an engagement pin. The protruding portion 15 is provided so as to protrude outward from the outer periphery of the sliding portion 13 to such a length as to be in contact with the holding arm 87 and not to hinder the rotation of the operation dial 10.

The projection 15 is provided with the operation dial 10.
By rotating the sliding arm 13, when the sliding portion 13 passes below the pressing arm 87, the sliding portion 13 engages with the press-contact tip portion 89 of the pressing arm 87. That is, the holding arm 87
As shown in FIG. 3, when the press-contact tip 89 of the contact member is elastically pressed and deformed by the sliding portion 13, as shown in FIG.
9 is abutted from the inner surface to regulate its deformation.

The protruding portion 15 is made of a resin or metal piece formed in an appropriate shape, and the adhesive is adjusted according to the number and position of the sliding portions 13 through which the holding arm 87 passes by turning the operation dial 10. It is preferable that the sheet is adhered by, for example, the above method.

When the operating load at a high temperature (80 ° C. × 4 hours) was measured using an operating dial having this structure, there was almost no deformation of the holding arm, and a sufficient operating load was applied when operating the dial. At the same time, the moderation of the damper switching is maintained without deterioration.

FIGS. 4 and 5 show another example of the structure of the present invention. Reference numeral 20 denotes an operation dial, 21 denotes a dial body, and 22 denotes a connecting arm. In these figures, the same reference numerals as those in FIGS. 6 and 7 denote the same members. The operation dial shown here is integrally provided with a projection 25 protruding outward in a flange shape from the ends of the sliding portion 23 and the recess 24 on the upper side of the dial main body 21.

[0020]

As shown and described above, according to the operating load applying mechanism of the air outlet damper opening / closing device of the present invention, the deformation of the holding arm for switching the opening / closing amount of the damper even when exposed to a high temperature for a long time. Can be kept small. Therefore, even in a vehicle where the temperature tends to be high, an appropriate moderation feeling of the operation dial and reliable operability can be maintained.

[Brief description of the drawings]

FIG. 1 is a front view of an operation dial showing an example of a damper opening / closing mechanism of an air outlet according to the present invention.

FIG. 2 is a sectional view taken along the line 2-2.

FIG. 3 is a cross-sectional view showing a rotating state of the operation dial shown in FIG.

FIG. 4 is a front view of an operation dial showing another example of the present invention.

FIG. 5 is a sectional view taken along line 5-5.

FIG. 6 is a partially cutaway perspective view showing an example of a general air outlet damper opening / closing device.

FIG. 7 is an exploded perspective view thereof.

FIG. 8 is a front view of the operation dial.

FIG. 9 is a sectional view taken along line 9-9.

FIG. 10 is a plan view showing a rotating state of the operation dial shown in FIG. 8;

FIG. 11 is a cross-sectional view taken along the line 11-11.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Operation dial 11 Dial main body 12 Connecting arm 13 Sliding part 14 Depressed part 15 Protrusion part 87 Pressing arm 89 Press-contact tip part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60H 1/34 F24F 13/14

Claims (1)

(57) [Scope of request for utility model registration] An opening is adjusted by turning a damper in an air outlet connected to the operation dial by turning the operation dial, and an outer peripheral portion of the operation dial is provided. And a pressing arm having a press-contact tip portion elastically pressed against the sliding portion extends from above the center of rotation of the operation dial to perform the operation. In a mechanism for applying an operation load to the dial, a protrusion is provided on the upper side of the sliding portion of the operation dial, and when the operation dial is rotated, the press-contact tip of the holding arm engages with the protrusion. An operating load applying mechanism in a damper opening / closing device for an air outlet, wherein the operating portion is configured to slide on a sliding portion while being fitted.