KR20020057348A - Apparatus for driving of door in an air conditioning system - Google Patents

Abstract

PURPOSE: A device for driving door of air conditioning unit is provided to manufacture a fixing boss to fix a cable and to fix cam with a case. CONSTITUTION: A device comprises a platy cam(3) rotatably installed to a case(1) and having a guiding slot(3a), an insertion hole formed on a position separate from the guiding slot, at least one key groove formed to be fluidically connected with the insertion hole; a fixing boss having a body(21) having one end inserted to an insertion groove formed on the case and formed to be rotatable rod shape to fix a cable(6), a first separation preventive protrusion protrusively formed on one end of the body so that the body is supported by one surface of the cam while inserted into the insertion hole and a second separation preventive protrusion protrusively formed on a middle of the body and passing the key groove so that the body is supported by the other surface of the cam while rotated in the insertion hole; and an arm(4) receiving rotary force of the cam to rotate a door installed in the case.

Description

Door driving device of HVAC unit {APPARATUS FOR DRIVING OF DOOR IN AN AIR CONDITIONING SYSTEM}

The present invention relates to a door driving apparatus of an air conditioning unit, and more specifically, instead of forming a cable high information when forming a mold of a cam, a separate high information is manufactured and used permanently as a substitute for a cable high information for fixing a cable. In addition, it is to perform a dual role to secure the cam to the case, and the door drive device of the air conditioning unit to ensure that the high information is not released at all during the transport process in the cam fixed to the case.

A vehicle air conditioner is a device that cools or heats a vehicle interior by introducing air from the outside to heat or cool the air and blow it into the interior of the vehicle. Will be assembled and configured as one.

The unit unit is a blower unit in which a blower fan is mounted to supply outside air to the inside, and an evaporator unit in which an evaporator is mounted to heat the outside air introduced by the blower fan to cool the inside of the vehicle. And a heater core unit equipped with a heater core so as to be connected to the evaporator unit and heat the vehicle interior.

The blower unit in each of the unit units includes a case having an air inlet and an air outlet, an internal / external air switching door which is installed to be rotated at a predetermined angle within the air inlet side of the case, and opens and closes the air inlet. It consists of a door driving means which is installed on the outside of the case to adjust the opening and closing angle of the switching door.

The heater core unit may include: a case having an air inlet and a plurality of branch outlets; a heating selection door rotatably installed inside the case such that air passing through the evaporator selectively passes through the heater core; A plurality of blower switching doors are installed in the branch outlet so as to be rotatable, and are blown into the vehicle interior through any one of a ventilator, a defroster, and a floor duct, and a rotation opening and closing of the heating selection door and the blower switching door. It is composed of a door driving means installed on the outside of the case to adjust the angle.

As described above, the opening / closing door, the heating selection door, and the ventilation switching door are controlled by the door driving means, and the description thereof will be described with reference to FIGS. 1 and 2.

Here, for convenience of description, a door driving means for driving the heating selection door and the airflow switching door will be described as an example.

1 is a front view showing the door driving apparatus of the air conditioning unit according to the prior art, Figure 2 is a cross-sectional view showing the configuration of the cam fixing means according to the prior art.

As shown in the drawing, the door driving means comprises a first driving means for driving a blowing switching door and a second driving means for driving a heating selection door.

The first driving means has three guide slots 3a penetrating up and down at the edge portion, and has a cable gouges 3b protruding from the upper surface, and hinge screws on one outer surface of the case 1. While the plate-shaped first cam 3 rotatably installed via (2) and one end are installed to rotate the rotary shaft 4a of the air flow switching door (not shown) through the case 1, The other end is provided with a link type arm 4 rotatably installed on the outer surface of the case 1 via a hinge 4b, and protrudes from the other end of the arm 4, so as to protrude from the first cam. The first pin is slidably fixed in the guide slot 3a of 3) and one end is fixed to the cable high information 3b, and is moved back and forth by an operation lever (not shown) on the instrument panel. With a first cable 6 which allows the cam 3 to rotate about the hinge screw 2. There is sex.

The second driving means has one guide slot 7a penetrating up and down at an edge portion, and has a cable gougs 7b protruding from the upper surface, and hinge screws on one outer surface of the case 1. A plate-shaped second cam 7 rotatably provided via (8), a pin 9 slidably provided in the guide slot 7a of the second cam 7, and the cable high information. The second cable 10 which has one end fixed on the 7b and moves forward and backward by an operating lever (not shown) on the instrument panel so that the second cam 7 rotates around the hinge screw 8. Consists of

When the case 1 having the first driving means and the second driving means as described above is mounted in the vehicle, one of the doors for switching the blower is set to enable the vent mode by using a separate setting means. In addition, the rest is set so that both the deep mode and the floor are disabled, and the heating selection door is set to enable the heating mode by using a separate setting means, and then each of the first cable 6 and the second cable 10 The ends shall be connected to the cable gouges (3b) (7b). Here, the vent mode means a mode to be blown by the ventilator, the dip mode means a mode to be blown by the defroster, the floor mode means a mode to be blown by the floor duct, the heating mode is an evaporator It means a mode that allows the air passing through the heater core to pass through.

The reason for setting the heating selection door and the airflow switching door as described above using the setting means as described above is that the first and second cables 6 and 10 are moved forward and backward. When the process of turning the second cam 3 and 7 at a predetermined angle ends, the pins 5 and 9 come into contact with both ends of the guide slots 3a and 7a, respectively, to generate a friction sound. The length of the guide slots (3a) and (7a) is designed to be more relaxed so that the pins (5) and (9) are not in contact with both ends of the guide slots (3a) and (7a). Since the first and second cams 3 and 7 are manufactured so that the operator can manually set the positions of the blower switching door and the heating selection door manually when the case 1 is mounted inside the vehicle. Because I could not.

Therefore, in the related art, a cam fixing device for fixing the first and second cams 3 and 7 for accurately setting the position of the blower switching door and the heating selection door using the setting means has been developed. This will be described with reference to FIGS. 1 and 2.

As shown in the drawing, slots 3c and 7c having a predetermined shape penetrate up and down are formed at appropriate positions of the first and second cams 3 and 7, and an accommodating hole is formed on the upper surface of the case 1. The receiving protrusion 11 which has 11a) is formed.

The guide slots 3c and 7c are inserted with fixing pins 12 provided with departure preventing protrusions 12a on their outer circumferential surfaces, respectively, and end portions of the fixing pins 12 are accommodating holes of the receiving protrusions 11. It is inserted in 11a, and the 1st, 2nd cam 3 and 7 with respect to the case 1 do not rotate, but are in a fixed state.

Here, the separation preventing protrusion 12a is the inner surface of the first and second cams 3 and 7 due to the rotation of the predetermined angle by the rotation of the fixing pin 12 in the guide slots 3c and 7c of the fixing pin 12. Is supported on to prevent the separation of the fixing pin 12.

As the conventional fixing pin 12 is loosely inserted into the receiving hole 11a of the receiving protrusion 11 through the guide slots 3c and 7c, the first and second cams are fixed to the case. If the attention is not required, there is a problem that the fixing pin 12 is separated and can not perform its role smoothly.

In addition, the conventional fixing pin 12 has a problem that it takes a lot of work because the case 1 is to be removed after the case 1 is mounted in the vehicle.

The present invention was devised to achieve the above object, and instead of molding the cable high information when forming a mold of the cam, a separate high information is produced and used permanently as a substitute for the cable high information to which the cable is fixed. The purpose of the present invention is to provide a door driving device for an air conditioning unit that serves to double the fixed to the case, and the high information is not released at all during the transport process while the cam is fixed to the case.

1 is a front view showing a door driving device of the air conditioning unit according to the prior art.

Figure 2 is a cross-sectional view showing the configuration of the cam fixing means according to the prior art.

Figure 3 is a front view showing a door driving device of the air conditioning unit according to the present invention.

Figure 4 is a front view of the cam of the door drive device according to the present invention.

5 is a perspective view showing the appearance of high information in the configuration of the door drive apparatus according to the present invention.

Figure 6 is a cross-sectional view showing the assembled state of the high information in a state before mounting the case to which the door drive device according to the present invention is applied.

Figure 7 is a cross-sectional view showing the assembled state of the high information in a state after completion of mounting the case the door drive device according to the present invention is applied to the vehicle.

Figure 8a, Figure 8b is a plan view showing the assembly process of high information according to the present invention.

Figure 9 is a cross-sectional view showing a state in which the high information is fully assembled according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: Case 3: Cam

3a: guide slot 3c: insertion hole

3d: keyway 3e: guide surface

3f: Locking protrusion 3f ': Locking groove

4: arm 6: cable

20: high information 21: the body

24: the first departure prevention projections 23: the second departure prevention projections

22: cable separation prevention projection 22a: insertion guide surface

The present invention for achieving the above object, in the door driving apparatus of the air conditioning unit for driving the door installed in the case of the air conditioning unit, a guide slot formed in a set position, and a set position spaced apart from the guide slot A plate-shaped cam having an insertion hole formed in the at least one key groove so as to communicate with the insertion hole and rotatably installed in the case; One end portion is inserted into the insertion groove formed in the set position of the case and is formed in the rod-shaped rotatable in the insertion hole and the cable is connected and fixed, one side of the cam in the state that the body is inserted into the insertion hole A first release preventing protrusion protruding on one end of the body so as to be supported on the body, and passing through the key groove and being supported on the rear surface of the cam in a state in which the body is rotated in the insertion hole. A high information beam having a second escape preventing protrusion formed to protrude; An arm for rotating the door by receiving the rotational force of the cam; One end is coupled to the body protruding to the rear surface of the cam is characterized in that consisting of a cable for rotating the cam as it moves forward and backward.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the door driving apparatus of the air conditioning unit according to the present invention will be described in detail.

Figure 3 is a front view showing a door drive device of the air conditioning unit according to the present invention, Figure 4 is a front view of a cam of the door drive device according to the present invention, Figure 5 is a high information of the configuration of the door drive device according to the present invention Figure 6 is a perspective view showing the appearance, Figure 6 is a cross-sectional view showing the assembly state of the high information in the state before mounting the case to which the door driving apparatus according to the present invention is applied to the vehicle, Figure 7 is applied to the door driving apparatus according to the present invention Figure 8 is a cross-sectional view showing the assembly of the high information in the state after the case is completed mounting the vehicle, Figures 8a, 8b is a plan view showing the assembly process of the high information according to the present invention, Figure 9 is a high information is complete It is sectional drawing which shows the assembled state.

Before referring to the description of the present invention, the door of the air-conditioning unit includes a door for switching the inside and outside air installed in the blower unit, a blower switch door and a heating selection door installed in the heater core unit, so as to be contrasted with the conventional description. For convenience of description, it will be apparent that the door selection device for driving the heating selection door and the airflow switching door will be described as an example, and the same parts are assigned to the same parts as in the prior art.

As shown, the door driving apparatus according to the present invention is composed of a first driving means for driving a door for switching the air blowing, and a second driving means for driving a heating selection door.

The first drive means largely comprises a cam 3, a high intelligence 20, an arm 4, a cable 6 and a cam 5.

As shown in FIGS. 4, 8A, and 8B, the cam 3 is rotatably installed on one outer surface of the air conditioning unit case 1 via a hinge screw 2. Three guide slots 3a are formed therethrough at positions set at the edges, and insertion holes 3c having a predetermined diameter are formed at set positions spaced from the guide slots 3a, and the insertion holes 3c are formed. At least one key groove 3d is formed at the inner surface so as to communicate with the inner side thereof.

Here, the key groove (3d) is shown in two in the present invention.

As shown in FIGS. 5, 6, and 7, the high information 20 is fitted to the fitting groove 11a of the fitting protrusion 11 formed at one end of the case 1 at the set position of the case 1. A rod-shaped body 21 rotatable in the insertion hole 3c, and on the one surface of the cam 3 in the state where the body 21 is inserted into the insertion hole 3c (the cam 3 in the drawing) And a first release preventing protrusion 24 protruding from one end side of the body 21 (on the lower end side of the body 21 in the drawing) and the key groove 3d so as to be supported. The body 21 is protruded to the middle side of the body 21 so as to be supported on the rear surface of the cam 3 (on the upper surface of the cam 3 in the drawing) in a state rotated in the insertion hole (3c) The second departure preventing protrusion 23 is composed of.

Here, in the embodiment of the present invention, the shape of the first departure preventing protrusion 24 is a circular shape having an area enough to cover the insertion hole 3c, and the second departure preventing protrusion ( 23) formed two to fit the number of the key groove (3d).

As shown in FIG. 3, the arm 4 is installed so that one end thereof can rotate the rotating shaft 4a of the door (not shown) through the case 1, while the other end is disposed outside the case 1. It is made of a link-type type rotatably installed via the hinge (4b) on the side, and serves to rotate the door by receiving the rotational force of the cam (3).

As shown in FIG. 1, the cable 6 is coupled to the body 21 protruding to the rear surface of the cam 3 and operated forward and backward by an operation lever (not shown) on the instrument panel. Cam 3 serves to rotate about the hinge screw (2).

As shown in FIGS. 5, 6, and 7, one end of the body 21 is inserted into the insertion hole 3c so as to be press-fitted and passed through the body 21. Cable separation preventing projection 22 for preventing the separation is further formed.

An insertion guide surface 22a is formed to be inclined on the outside of the cable separation preventing protrusion 22.

Here, the cable separation preventing projection 22 is made of a material that is elastically bent to the body 21 side when the external force is applied and also returned to its original state when the external force is removed.

The reason for this is that the circular ring 6a formed at one end of the cable 6 is fitted smoothly.

Here, in order to be able to fit the ring (6a) smoothly as shown in Figures 6 and 7, the inner diameter of the ring (6a) is called c ₁ , connecting the edge of the cable separation prevention projection 22 a virtual line diameter is called d _2, when the outer diameter of the body 21 as d _1, is such that when _{d 1 <c 1 <d 2} .

As shown in FIGS. 4 and 9, a locking protrusion 3f having a locking groove 3f 'to which the second separation preventing protrusion 23 is locked is provided on the rear surface of the cam 3. When the body 21 is rotated in the insertion hole (3c) is formed, the induction surface (3e) for guiding the second separation preventing projection 23 to the locking groove (3f ') is formed to be inclined.

The pin 5 is installed to protrude from the other end of the arm 4 so as to be slidably installed in the guide slot 3a of the cam 3.

Meanwhile, as an embodiment of the present invention, the first driving means for driving the blower switching door has been described as an example, and the second driving means for driving the heating selection door is the same as the configuration of the first driving means. Omit.

Referring to the procedure of assembling the door drive device according to the present invention configured as described above are as follows.

First, the work which fastens the high information 20 to the insertion hole 3c of the cam 3 is performed.

More specifically, as shown in FIG. 6, the cable separation preventing protrusion 22 of the high information 20 is forcibly inserted into the insertion hole 3c.

At this time, during the insertion process of the cable separation prevention projection 22, the insertion guide surface (22a) formed by the insertion hole (3c) is forcibly inserted into the insertion hole.

As described above, after completion of the insertion of the cable release preventing protrusion 22 into the insertion hole 3c, the body 21 of the high information 20 is not separated by the cable release preventing protrusion 22.

Next, the operation | movement which installs the cam 3 provided with the high information 20 to the case 1 rotatably via the hinge screw 2 is performed.

At this time, as shown in FIG. 3, the installation work of the arm 4 is also performed in parallel.

Subsequently, as shown in FIG. 8A, the cam 3 is rotated by a predetermined angle so that the high intelligence 20 is in line with the fitting groove 11a formed in the case 1. Insert the end into the fitting groove (11a).

When the above operation is completed, the cam 3 is fixed at the position set by the high information 20.

As described above, the fixing of mounting the case 1 having both the cam 3, the arm 4, and the high intelligence 20 inside the vehicle is performed.

Subsequently, as shown in FIG. 8A, the loop 6a formed at the end of the cable 6 is placed between the cable release preventing protrusion 22 and the rear surface of the cam 3 (the upper surface in the figure). 20) to fix the connection on the body (21).

That is, when the cable release preventing protrusion 22 is fitted to the ring 6a, the cable release preventing protrusion 22 is elastically bent to the outer circumferential surface side of the body 21, and then the ring 6a is the cable release preventing protrusion ( After passing through the portion 22, the cable release preventing protrusion 22 is returned to its original state so that the ring 6a is not separated.

Next, as shown in FIG. 7, the high intelligence 20 is inserted from the insertion hole 3c in a state in which the second separation preventing protrusion 23 and the key groove 3d of the high intelligence 20 are aligned with each other. When withdrawn, the second separation preventing protrusion 23 is in contact with the rear surface (upper surface in the drawing) of the cam 3 via the key groove 3d.

In this case, when the high information 20 is drawn out, the first departure preventing protrusion 24 covers the insertion hole 3c in a state of being in contact with one surface (lower surface in the drawing) of the cam 3 and high information. 20 is out of the fitting groove (11a) formed in the set position of the case (1).

As shown in FIG. 8B, after performing the above-described process, when the high information 20 is turned about 90 degrees (degrees), as shown in FIG. 9, the second departure preventing protrusion formed in the high information 20 ( 23 moves under the guidance of the guide surface 3e formed on the rear surface of the cam 3 (upper surface on the drawing), and then moves to the locking groove 3f 'of the locking projection 3f as shown in FIG. It is locked and finally the high information 20 is in the state which is permanently fixed to the cam 3.

Therefore, the high information 20 can be used permanently as a substitute for the boss for connecting and fixing the cable, and also serves a dual role of fixing the cam to the case in order to set the door position to be performed before the installation installation of the cable.

As described above, according to the present invention, instead of molding the cable high information when molding the cam mold, a separate high information is produced to permanently use as a substitute for cable high information to which the cable is fixed, and to fix the cam to the case. The purpose is to provide a door drive device of the air conditioning unit to perform a dual role, so that the high information is not released at all during the transport process with the cam fixed to the case.

Claims (4)

In the door driving apparatus of the air conditioning unit for rotating the door installed in the case (1) of the air conditioning unit, A guide slot 3a formed at a set position, an insertion hole 3c formed at a set position spaced apart from the guide slot 3a, and at least one key groove 3d formed to be in communication with the insertion hole 3c. A plate-shaped cam 3 rotatably mounted to the case 1; One end portion is inserted into the fitting groove (11a) formed in the set position of the case (1) and is formed in a rod-like rotatable in the insertion hole (3c) and the body 21 to which the cable 6 is connected and fixed; The first departure preventing protrusion 24 protruding from one end of the body 21 so as to be supported on one surface of the cam 3 in a state where the body 21 is inserted into the insertion hole 3c, and the A protruding part formed in the middle of the body 21 so as to support the rear surface of the cam 3 while passing through the key groove 3d and the body 21 is rotated in the insertion hole 3c. 2 and a high information 20 having an anti-separation protrusion 23; Door driving device of the air conditioning unit, characterized in that made of an arm (4) for receiving the rotational force of the cam (3) to rotate the door. The method of claim 1, One end of the body 21 is inserted into the insertion hole (3c) to be press-fitted through the body 21, the cable separation preventing projection 22 for preventing the separation of the cable 6 is further Door driving device of the air conditioning unit, characterized in that formed. The method of claim 2, Door driving device of the air conditioning unit, characterized in that the induction surface (22a) is formed obliquely on the outside of the cable separation preventing projection (22). The method of claim 1, A locking protrusion 3f having a locking groove 3f 'to which the second separation preventing protrusion 23 is locked is formed on the rear surface of the cam 3, and the body 21 is in the insertion hole 3c. The door driving device of the air conditioning unit, characterized in that the induction surface (3e) for guiding the second departure prevention projections 23 to guide the locking groove (3f ') when rotating in the inclined.