JPH10166837A - Door mechanism of air conditioner for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door mechanism of an air conditioner for an automobile, capable of achieving reduction of manufacturing cost and easily adjusting the moving amount of the door. SOLUTION: In a door mechanism, a rod holder 21 is inserted into a holding hole 23 on the end of a rod 20, a rotary shaft 34 of a door lever 5 is eccentrically inserted into an eccentric hole 28 of the rod holder 21, and engaging external teeth 24a, 24b are formed on the outer peripheral surface on the end of the rod 20. An elastic engaging body 30 provided with an engaging internal tooth 32 to be always and elastically pressed to and engaged with the engaging external teeth 24a, 24b and for releasing the engagement when it is elastically deformed outward is formed on the outer part of the rod holder 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door mechanism of a vehicle air conditioner for interlocking a plurality of doors for controlling air flow in a vehicle air conditioner.

[0002]

2. Description of the Related Art In an air conditioner for an automobile, a pair of intake doors separated from each other may be operated while interlocking, for example, when switching between inside and outside air. Various door mechanisms are used. This door mechanism includes, for example, those shown in FIGS.

FIG. 4 is an exploded perspective view of a conventional door mechanism.
FIG. 5 is an exploded perspective view showing the rod and the rod holder of FIG. 4 in an enlarged manner, and FIG. 6 is a sectional view of the rod holder. In FIG. 4, the door mechanism includes rotating shafts 3 and 4 of a pair of doors 1 and 2.
Door levers 5 and 6 are respectively attached to these door levers, and these door levers 5 and 6 are connected by a metal rod 7.

[0004] One end of the rod 7 has a bent portion 7a.
The bent portion 7a is rotatably connected by being inserted into a through hole 6a formed in the door lever 6, and the other end of the rod 7 is formed with a knurl portion 9 having a plurality of bead portions 9a. The knurl portion 9 and the door levers 5 and 6 are connected via a rod holder 8 so that the amount of movement of the doors 1 and 2 can be adjusted.

[0005] That is, as shown in FIGS. 5 and 6, the rod holder 8 is a resin-shaped box-shaped one, and is fitted with a knurled part 9 formed at an end of a metal rod 7. It comprises a main body 10 having a mating groove 11, a cover 12 connected to the main body 10 by an integral hinge 10a, and a protruding portion 13 protruding downward from the main body 10 and inserted into the through hole 5a of the door lever 5. ing.
Then, the effective length of the rod 7 is adjusted by changing the fitting position of the knurl portion 9 with respect to the fitting groove 11,
The movement amount of the doors 1 and 2 is adjusted.

[0006]

However, in this door mechanism, when the rod 7 and the rod holder 8 are formed, different materials must be used. Must be knurled, and rod holder 8 molded using resin
On the other hand, it is also necessary to form a groove or the like, which may increase the cost.

Further, it is conceivable to form the rod 7 with knurls by resin molding. However, in order to secure necessary strength, there is a problem that the outer diameter of the rod 7 becomes large and is not practical.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and provides a door mechanism of an air conditioner for a vehicle which can reduce the cost and easily adjust the amount of movement of the door. With the goal.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, an invention according to claim 1 has a door lever and a door lever provided on at least two air flow control doors in an air conditioner for a vehicle. In a door mechanism which is connected via a rod holder so as to operate the other door in conjunction with the operation of one door, the rod has at its end a rotatably holding the rod holder. Forming holes and engaging external teeth on the outer peripheral surface of the end portion,
The rod holder is formed with an eccentric hole that is inserted into a position where the rotation axis of the door lever is eccentric, and is elastically engaged with the external teeth for engagement radially outward to apply the external force. Is characterized by having an elastic engagement body having engagement internal teeth from which is released.

According to the present invention, when adjusting the amount of movement of the door, the elastic engaging body of the rod holder is deformed by applying an external force, and the elastic engaging body is engaged with the engaging external teeth on the outer peripheral surface of the end of the rod. Disengage the engagement internal teeth. Next, when the rod holder is rotated as appropriate, the effective length of the rod can be changed since the pivot axis of the door lever is provided eccentrically to the rod holder. When the elastic engaging member of the rod holder is released, the engaging internal teeth of the elastic engaging member always elastically engage with the engaging external teeth of the rod, and this state is maintained.

As described above, since the amount of movement of the door can be adjusted only by appropriately rotating the rod holder by deforming the elastic engaging body of the rod holder, the adjustment work is extremely simplified. The invention described in claim 2 is characterized in that the door lever, the rod and the rod holder are formed of a synthetic resin.

With this configuration, a door mechanism is constituted.
Since all parts of the rod, the rod holder, and the door lever can be molded with resin, the molding process becomes easy, and the cost is reduced.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a door mechanism of a vehicle air conditioner according to an embodiment of the present invention, and FIG.
FIG. 3 is a perspective view of the rod shown in FIG. 1 viewed from another direction.
(A) (b) (c) is a figure which shows the operating state of a door mechanism. Components common to those shown in FIGS. 5 and 6 are denoted by the same reference numerals.

As shown in FIG. 1, the door mechanism according to the present embodiment includes rod 20 and rod holder 2 as constituent elements.
1 and the door levers 5 and 6 are all formed by resin molding.

The rod 20 has a holding hole 23 for rotatably holding a rod holder 21 at an end (one end) on the side connected to the door lever 5, and a pair of engaging holes on the outer peripheral surface. External teeth 24a and 24b are formed. At the end (the other end) on the side connected to the door lever 6, a through hole 20a as shown in FIG. 3 is opened, through which a pin or the like (not shown) is inserted. The door lever 6 is connected.

A pair of engaging external teeth 24 at the one end portion
A guide slot 25 for guiding a support portion 29 of the rod holder 21, which will be described later, is formed substantially half way between the outer teeth 24a and 24b.
As shown in FIG. 2, an insertion slot 26 for inserting the support portion 29 of the rod holder 21 is formed. A number of holes 27 are formed in the shaft of the rod 20 to reduce the weight of the rod 20.

The rod holder 21 has the entire rod 2
1 is a columnar shape to be inserted into the holding hole 23 of FIG.
As shown in FIG. 5, an eccentric hole 28 into which a rotation shaft 34 of the door lever 5 described later is inserted is formed at a position shifted from the center,
A support portion 29 is provided upright on the upper part. An elastic engagement body 30 is formed to be curved from the support portion 29 in the circumferential direction.
It is separated from the rod holder 21 by the thickness of 4a, 24b. A rod 2 is provided on the inner peripheral surface of the elastic engagement body 30.
Inner teeth 31 for engagement which are elastically engaged with the outer teeth 24a and 24b for engagement are formed. This engagement internal teeth 31
While the outer teeth 24a and 24b are always elastically pressed and engaged with the engaging external teeth 24a and 24b, the engagement can be released when the outer teeth are elastically deformed. The levers 32 and 33 for deforming the elastic engagement body 30 are provided above the support portion 29 and the elastic engagement body 3.
0 is formed on the upper surface.

The door lever 5 is mounted on the rotating shaft 3 of the door 1 as in the prior art shown in FIG. 4, but in the present embodiment, as shown in FIG. The rotating shaft 34 having the portion 35 is formed so as to project vertically. The rotating shaft 34 is inserted into the eccentric hole 28 of the rod holder 21.

Next, the operation of the door mechanism will be described with reference to FIG. First, in order to attach the rod holder 21 to the rod 20, the rod holder 21 is attached to the holding hole 23 of the rod 20.
Insert inside. In this case, the support portion 2 of the rod holder 21
The guide 9 is inserted while being guided along the insertion slot 26 and the guide slot 25 of the rod 20. In this inserted state, the elastic engagement body 30 is deformed radially inward, and the engagement internal teeth 31 are used as the engagement external teeth 24a, 24
b.

Next, the door lever 5 side is connected to the rotation shaft 3 of the door.
4 is inserted into the eccentric hole 28 of the rod holder 21, and the locking portion 35 is protruded to the outside of the eccentric hole 28. Also, on the door lever 6 side, a pin or the like is inserted through the through hole 20a and the through hole 6a,
The rod 20 and the door lever 6 are connected.

To adjust the amount of movement of the door in this state,
As shown by phantom lines in FIG. 3A, the elastic engaging members 30 are deformed radially outward by gripping the levers 32 and 33 of the rod holder 21, and the engaging external teeth 24 a and 24 b of the rod 20 are formed.
The engagement of the engagement internal teeth 31 of the elastic engagement body 30 with the engagement member 30 is released.

Then, the support portion 29 of the rod holder 21 is inserted into the insertion slot 26 and the guide slot 25 of the rod 20.
When the rod holder 21 is appropriately rotated while being guided along, the rotation shaft 34 of the door lever 5 is
, The effective length of the rod 20 can be changed.

When the effective length of the rod 20 can be changed to a predetermined position, the elastic engaging body 30 of the rod holder 21 is released. Thereby, the internal teeth 3 for engagement of the elastic engagement body 30
1 engages with the external teeth for engagement 24a, 24b of the rod 20,
This state is maintained.

As for the setting of the amount of movement of the door, as shown in FIG. 3A, the amount of eccentricity (-e) is minimized with respect to the effective length (l) of the rod 30 at the time of mounting. Set in minus dimensions. Next, as shown in FIG. 3B, when the rod holder 21 is rotated approximately 90 degrees,
The amount of eccentricity becomes zero, the amount of adjustment of the door movement amount becomes intermediate, and further, as shown in FIG.
When 1 is rotated approximately 180 degrees, the amount of eccentricity (+ e) becomes maximum, and the amount of door movement also becomes maximum.

As described above, in the present embodiment, the amount of movement of the door can be adjusted only by appropriately rotating the rod holder 21 by elastically deforming the elastic engagement body 30 of the rod holder 21. It becomes extremely simple. Further, since all parts of the rod 20, the rod holder 21, and the door levers 5 and 6 constituting the door mechanism are made of resin, the manufacturing cost can be significantly reduced.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention. In particular, the door to which the door mechanism according to the present invention is applied is not limited to the intake door,
Other doors such as an air mix door may be used, and the number of doors is not limited. Further, the shape of the external teeth for engagement and the internal teeth for engagement may be any shape as long as they are always elastically deformed and elastically deformed to release the engagement, and may have various shapes. Good.

[0027]

As described above, according to the present invention,
Since the amount of movement of the door can be adjusted only by appropriately rotating the rod holder by elastically deforming the elastic engagement body of the rod holder, the adjustment work is extremely simplified. Further, since all parts of the door mechanism, the rod, the rod holder, and the door lever can be resin-molded, the molding process becomes easy, and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of the rod shown in FIG. 1 as viewed from another direction.

FIGS. 3A, 3B, and 3C are diagrams illustrating an operation state of a door mechanism, respectively.

FIG. 4 is an exploded perspective view of a conventional door mechanism.

5 is an exploded perspective view showing a rod and a rod holder shown in the main part of FIG. 4 in an enlarged manner.

FIG. 6 is a front view of the rod holder of FIG. 4;

[Explanation of symbols]

 1, 2, door, 5, 6 door lever, 20 rod, 21 rod holder, 23 holding hole, 24a, 24b external teeth for engagement, 28 eccentric hole, 30 elastic engagement body, 31 engagement Internal teeth, 34 ... Axis.

Claims (2)

[Claims] 1. A door lever (5, 6) provided on each of at least two doors (1, 2) for controlling an air flow in an air conditioner for a vehicle via a rod (20) and a rod holder (21). Connected and linked to the operation of one door (1), the other door
(2) In the door mechanism, the rod (20) has a holding hole (23) for rotatably holding the rod holder (21) at an end thereof, and the rod (20) has an end. External teeth for engagement (24a, 24b) are formed on the outer peripheral surface of the eccentric hole (28) which is inserted into the rod holder (21) at a position where the rotation shaft (34) of the door lever (5) is eccentric. And an engagement member having engagement inner teeth (31) that are elastically engaged with the engagement external teeth (24a, 24b) radially outward to release the engagement by applying an external force. (30) A door mechanism of an air conditioner for an automobile, characterized by having (30). 2. The door mechanism according to claim 1, wherein the door levers (5, 6), the rod (20) and the rod holder (21) are formed of a synthetic resin.