JPH071284Y2 - Click mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a click mechanism, and more particularly to a click mechanism suitable for a temperature setting operation lever of an air conditioning controller.

[Conventional technology]

This click mechanism will be described with an automobile air conditioner, for example.

FIG. 5 is a schematic diagram for explaining a general air conditioner provided in an automobile.

As shown in FIG. 5, various doors having different roles are provided in the air conditioner. First, the inside / outside air is switched by the intake door 2 that selects whether the air taken into the air conditioner is the air inside the vehicle or the air outside the vehicle. The air passing through the intake door 2 is sent to the evaporator 4 by the fan motor 3. The evaporator 4 serves to forcibly cool the sent air and send it out. The air that has passed through the evaporator 4 is divided into one that is used as cold air as it is and one that is heated by the heater core 5 and used as warm air, and these cold air and warm air are mixed later to an appropriate temperature. The wind is created. An air-mixing door 1 is provided to determine the mixing ratio of cold air and warm air at this time. Therefore, the air having a desired temperature can be obtained by opening / closing the air-mixing door 1. The wind thus obtained is then sent to the vent door 7, the floor door 8, and the differential door 9, and the air outlets are selected and selected depending on the open / closed states of these doors 7, 8 and 9. A proper temperature of air can be obtained from the outlet.

As mentioned above, various doors are provided in the air conditioner for automobiles. Among them, the intake door 2, the vent door 7, the floor door 8 and the differential door 9 are opened or closed, respectively. However, only the air-mixing door 1 is required to be in various open / closed states, and continuous opening / closing operations must be performed.

FIG. 6 is a perspective view showing a conventional example of a drive device for an air-mix door, in which 10 is an L-shaped lever and 11 is a wire.

In the figure, the lever 10 has a shaft portion 10b as a fulcrum and is indicated by an arrow A.
The air-mixing door 1 is rotatable in the -A direction, while the air-mixing door 1 is rotatable in the arrow BB direction about the shaft portion 1a as a fulcrum, and a wire is provided between the end portion 10c of the lever 10 and the air-mixing door 1. 11 are hooked. Therefore, when the operating portion 10a provided at one end of the lever 10 is moved in the direction of arrow A-A with the fingers, this movement is transmitted to the air-mixing door 1 via the wire 11, and the air-mixing door 1 is moved to the lever 10. Can be rotated by a desired angle in the direction of arrow BB according to the amount of movement.

FIGS. 7 to 13 are diagrams for explaining the operation of the conventional air conditioning control device equipped with such a lever 10.

7 to 9 are plan views showing the operation of the air conditioning control device. FIG. 7 shows the air-mixing door 1 fully opened and the intake door 2 opens to the outside air introduction side, and FIG. 8 shows the air-mixing door. 1 is fully closed, the intake door 2 is opened to the outside air introduction side, and FIG. 9 shows a state in which the air mixing door 1 is fully closed and the intake door 2 is opened to the inside air introduction side.

In FIG. 7 to FIG. 9, the air conditioning control device is a lever
10 and the operation knob 18 protruding to the front of the air conditioning controller body H
Is provided with a slide 16 and the lever 10 is
It is composed of an operating lever 12 and a traction lever 13.

The operation lever 12 is rotatably attached to the shaft 15 at one end side, is connected to the slide 16 at the other end side through the engagement groove 12d, and is a pin formed in the vicinity of the central portion to be slightly elongated in the radial direction. Insertion groove 12e and switch operating part 12c protruding sideways
And a spring retaining portion 12f on which the wire spring 19 is stretched. Further, on the side where the engagement groove 12d of the operation lever 12 is formed,
The hooking groove 12g is cut, and members having substantially the same shape are locked, and the locking groove 12g and the shaft 15 have a double structure.

The pulling lever 13 is formed in a substantially hook shape, is rotatably attached to the shaft 16 at a bent portion, and has a locking portion 13a for locking the wire 11 on one end side and a pin 20 on the other end side. Each of which has a guide groove 13d. A biasing spring 21 is attached to the shaft 16 to constantly bias the pulling lever 13 in the arrow I direction.

The guide groove 13d is formed in a generally V-shape in a plan view. In the drawing, the short groove side forms the non-operating portion R and the long groove side forms the operating portion S. In this conventional example, the non-operating portion R is centered on the shaft 16. And the operating portion S is set at an angle such that the sliding amount of the operating knob 18 and the opening degree of the air-mixing door 1 operated by the wire 11 are substantially proportional to each other, and the operating portion S is bored respectively. Has been done.

Then, after inserting the portion in which the guide groove 13d is formed into the operation lever 12 portion of the double structure, the pin insertion hole 12e
The pin 20 is inserted into the guide groove 13d from above, and the wire spring 19 is stretched between the spring retaining portions 12f so that the pin 20 is elastically urged in the direction of arrow J to connect the operation lever 12 and the traction lever 13. ing.

Subsequently, the operation of the cavity control device configured as described above will be described.

First, in the state shown in FIG. 7 in which the operation knob 18 is located at the maximum temperature position in the heater mode, the traction lever is rotated to the maximum in the counterclockwise direction in the drawing, and the door 1 for the air mix is fully opened. All the outside air passes through the heater core 5 and is guided to the passenger compartment side. At this time, the pin 20 is pressed against the inner surface of the pin insertion groove 12e on the slide 16 side by the elastic force of the wire spring 19, and L of the guide groove 13d at the end side of the operating portion S of the guide groove 13d.
Located in position. If the operation knob 18 is slid from this state in the low temperature side, that is, in the direction of arrow D, the slide 16
Indicates linear movement, the operating lever 12 indicates rotational movement, and the engaging groove 12d
In the above, each is performed while absorbing the path difference between the linear motion and the rotary motion. In this process, the pin 20 moves in the direction of arrow K along the operating portion S of the guide groove 13d, and accordingly, the pulling lever 13 rotates in the biasing direction I (clockwise direction in the drawing) of the biasing spring 21. Move. Then, the opening degree of the air-mixing door 1 changes in accordance with the rotation of the towing lever 13, a part of the introduced outside air passes through the heater core 5, and the remaining part thereof passes through the heater core 5.
It is mixed without passing through and is guided to the passenger compartment side.

When the operation knob 18 moves in the direction of the arrow D and reaches the position shown in FIG. 8, the heater mode ends, and the door 1 for the air mix
Only the outside air that is closed and not heated is introduced to the passenger compartment side. In this position, rotation of the tow lever 13 is restricted and the pin
As shown in FIG. 10, 20 reaches the M position immediately before the top 13e of the bent portion between the operating portion S and the non-operating portion R of the guide groove 13d (moving in the arrow K direction). Then, since the rotation of the traction lever 13 is restricted at the M position, the operating force becomes large, and the operator senses that the heater mode has ended.

From the position of Figure 8, when further moving the operation knob 18 with a large actuating force in the direction of arrow D, the pin 20 receives a reaction force P ₂ from the traction lever 13, as shown in FIG. 11, the reaction force P ₂ When the reaction force P ₃ of the component parallel to the direction in which the elastic force P ₁ of the wire spring 19 acts is greater than P ₁ , the reaction force P ₃ moves in the arrow Z direction along the pin insertion groove 12e, The vehicle goes over the top portion 13e and reaches the N position of the non-operating portion R. When the pin 20 reaches the N position, the non-actuating portion R is formed in an arc shape around the shaft 16 of the traction lever 13, so that the force from the traction lever 13 hardly acts on the pin 20, 20 is returned to the original position of the pin insertion groove 12e by the elastic force of the wire spring 19, and at the same time, does not apply a force to the pulling lever 13 along the non-operating portion R, and is almost at the O position at the end of the non-operating portion R. Reach At this time, the operation knob
18 has reached the recirculation unity mode position, and in this process, the operation switch 2a of the intake door 2 is switched to the switch operation unit 12c while the door 1 for the air mix is closed.
The intake door 2 is switched to the inside air introduction side by pressing with the button. As a result, the air in the vehicle compartment is circulated, and cooling can be efficiently performed.

The pin 20 also slides from the recirculation uniting mode to the heater mode, that is, when the operation knob 18 shown in FIG. 9 is slid to the operation knob 18 position shown in FIG. 7 through the intermediate position shown in FIG. When riding over the top 13e, the pin insertion groove 12e is displaced in the arrow Z direction to reach the M position of the operating portion S, and further, the desired mixing ratio is obtained in accordance with the displacement amount in the L position direction. You can

In the above-mentioned conventional example, the pulling lever 13 is always biased in the direction of the arrow I by the biasing spring 21, but this biasing spring 21 shifts the operation knob 18 from the recirculation uniting mode to the heater mode. You will need it in the case of arrow I
It is necessary to bias in the direction with a force larger than the elastic force P ₁ of the wire spring 19. Otherwise, it will be impossible to get over the top portion 13e, and the operation lever 15 will not be able to rotate, for example, in the low temperature portion of the heater mode.

In most of the air conditioning control devices as described above, the driver operates the operation knob 18, and in many cases, the operation knob 18 is operated during driving. For this reason, the heater mode from at least the position shown in FIG. 7 to the position shown in FIG. , And the intake door 2 is switched to the inside air introduction side, and a kind of position recognition function (click mechanism) is provided so that the operator can clearly discriminate the recirculation unity mode in which air circulates only in the passenger compartment. Is required. In order to generate this function, the guide groove 14a is formed in a substantially V shape as described above, and the operating force is set to be large at the position where the projection 13c rides over the top 14c.

[Problems to be solved by the device]

However, in the above-mentioned conventional example, the wire spring 19 is formed in a linear shape as shown in FIG.
Since they are a and 19a, both ring portions 19a and 19a are stretched while being stretched by hooking on the spring retaining portion 12f of the operation lever 12 while expanding the ring portions 19a and 19a. It was complicated and costly.

Further, since the pin 20 engaged with the wire spring 19 has a cylindrical shape, the wire spring 19 is likely to be displaced in the axial direction of the pin 20 (the direction of the arrow shown in FIG. 13), and for example, the wire spring 19 during the click operation. There is a risk that the pin will come off the pin 20 and the click action will not work.

The present invention has been made in view of the above-mentioned problems of the prior art. The purpose of the present invention is to simplify the structure and reduce the cost, to easily and surely perform the assembling work, and to prevent the wire spring from coming off. It is to provide a click mechanism capable of stably performing a function.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a first member having a click cam groove and a second member provided so as to be movable relative to the first member and having a guide hole. A pin inserted into the guide hole of the second member and the click cam groove of the first member, and a central portion of the pin is pressed against the pin and both ends thereof are hooked on spring hooking portions provided on the second member. In the click mechanism including the wire spring, the wire spring has a bent portion formed at the center thereof, and both ends thereof are bent in a direction opposite to the bending direction of the bent portion to provide an engaging portion, Is provided in the pin.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a plan view of an air conditioning control device to which a click mechanism according to the present invention is applied, FIG. 2 is an exploded perspective view, FIG. 3 is a plan view of a main part of a click mechanism portion, and FIG. 4 is A of FIG. It is a sectional view taken along the line A. Hereinafter, the same components as those of the conventional example or the components that can be regarded as the same as those of the conventional example will be denoted by the same reference numerals and will be described.

In these figures, the air-conditioning control device includes a lever 10 and a slide 16 on which an operation knob 18 projecting from the front of the air-conditioning control device main body H is projected, and the lever 10 is a second member. Control lever 12 and traction lever 13 which is the first member
It consists of

The operation lever 12 is rotatably attached to the shaft 15 at one end side, is connected to the slide 16 at the other end side through the engagement groove 12d, and is a pin formed in the vicinity of the central portion to be slightly elongated in the radial direction. Insertion groove 12e and switch operating part 12c protruding sideways
And a spring retaining portion 12f on which the wire spring 22 is stretched. Further, on the side where the engagement groove 12d of the operation lever 12 is formed,
The locking groove 12g is cut, and members having substantially the same shape are locked, and a double structure is provided between the locking groove 12g and the shaft 15.

The pulling lever 13 is formed in a substantially hook shape, is rotatably attached to the shaft 16 at a bent portion, and has a hooking portion 13a through which the wire 11 is hooked at one end and a pin 23 at the other end. Each of the guide grooves 13d is provided. A wire spring 22 is attached to the shaft 16 to constantly urge the pulling lever 13 in the arrow I direction.

As shown in FIG. 2, the wire spring 22 is formed with a bent portion 22a having an angle α at its central portion and bent portions 22a at both ends.
Engaging portions 22b and 22c that are bent in a direction opposite to the bending direction of are formed respectively, and have a substantially Σ shape as a whole.

Further, the pin 23 is formed in a cylindrical shape as shown in FIG. 2, an annular protrusion 23a is formed in the central portion thereof, and annular recesses 23b, 23b are formed in the upper and lower portions of the annular protrusion 23a. Tapered surfaces 23c and 23c are formed on the upper and lower surfaces of the 23b and 23b, respectively, which are separated from the annular projection 23a. The wire spring 22 is provided in the engaging recessed portion formed by the tapered surfaces 23c, 23c and the operating levers 12, 12 or the annular recessed portion 23b.
The bent portion 22a is pressed so as not to come off.

The guide groove 13d is formed in a V-shape in a plan view, and in the drawing, the short groove side forms the non-operating portion R and the long groove side forms the operating portion S. In this embodiment, the non-operating portion R is centered on the shaft 16. And the operating portion S is set at an angle such that the sliding amount of the operating knob 18 and the opening degree of the air-mixing door 1 operated by the wire 11 are substantially proportional to each other, and the operating portion S is bored respectively. Has been done.

In addition, all the components not particularly described are configured similarly to the conventional example.

Next, the assembling method of the above-mentioned embodiment constructed as described above will be explained.

After inserting the portion in which the guide groove 13d is formed into the operation lever 12 portion of the double structure, the guide groove 13d is inserted from the pin insertion hole 12e.
Insert the pin 23 into the wire spring, and then as shown in FIG.
One of the engaging portions 22b is hooked on the spring hooking portion 12f of the operating lever 12, and the bent portion 22a of the wire spring 22 is pressed against the taper surface 23c of the pin 23 and the upper or lower surface of the operating lever 12 while pressing the wire spring. The wire spring 22 is attached by pushing the other engaging portion 22c of 22 from the position indicated by the one-dot chain line to the left and hooking it on the spring retaining portion 12f of the operating lever 12, that is, the position indicated by the solid line. In this way, the operating lever 12 and the pulling lever 13 are connected as shown in FIGS. 1 and 4.

At the time of this attachment, since the angle α is attached to the bent portion 22a of the wire spring 22, the angle of the engaging portions 22b and 22c at both ends with respect to the surface of the operating lever 12 is adjusted by aligning the wire spring 22 with the surface of the operating lever 12. Is always constant (the angle at which the engaging portions 22b and 22c are hooked on the spring retaining portion 12f), and the work of attaching the wire spring 22 to the spring retaining portion 12f can be performed easily and reliably. Further, since the bent portion 22a is engaged with the tapered surface 23c, the bent portion 22a does not come off even when the axial force of the pin 23 is exerted during the click operation, etc., and the click function is stably performed. be able to. Further, since the bent portion 22a is formed at the angle α, the wire spring 22 is hard to rotate, and there is no fear that the engaging portions 22b and 22c will be disengaged from the spring retaining portion 12f. In addition, the wire spring 22
The structure can be simplified, and the cost can be reduced.

[Effect of device]

As described above, according to the present invention, the structure is simple and the cost can be reduced, the assembling work can be easily and surely performed, and the wire spring can be prevented from coming off and the click function can be stably performed.

[Brief description of drawings]

1 to 4 are for explaining one embodiment of the present invention. FIG. 1 is a plan view of an air conditioning control device to which a click mechanism according to the present invention is applied, and FIG. 2 is an exploded perspective view. FIG. 3 is a plan view of an essential part, FIG. 4 is a cross-sectional view taken along the line CC of FIG. 3, FIGS. 5 to 13 are for explaining a conventional example, and FIG. FIG. 6 is a sectional view showing the outline of a typical automobile air conditioner, FIG. 6 is an explanatory view showing the outline of a conventional manual air-conditioning control device, and FIGS. 7, 8, and 9 are conventional illustrations showing the operation. A plan view of the essential parts of the air conditioning control device, FIG. 10 and FIG.
11 is an explanatory view of the operating principle showing the movement of the pin in the guide groove, FIG. 12 is a perspective view showing the relationship between the pin and the wire spring, and FIG. 13 is a sectional view corresponding to FIG. 12 …… Operating lever, 12e …… Pin insertion groove, 12f …… Spring retaining part, 13 …… Truck lever, 13d …… Guide groove, 22 …… Line spring, 22a …… Bending part, 22b, 22c …… Engagement part, 23 ...... pin,
23c …… Tapered surface.

Claims (1)

[Scope of utility model registration request] 1. A first member having a click cam groove,
While being provided so as to be movable relative to the first member,
A second member having a guide hole, a pin inserted into the guide hole of the second member and the click cam groove of the first member, a center portion of the pin is pressed against the both end portions of the second member. In a click mechanism comprising a wire spring hooked on a spring hooking portion provided on a member of the wire spring, a bending portion is formed at the center of the wire spring, and both ends are opposite to the bending direction of the bending portion. The click mechanism is characterized in that the pin is provided with a concave groove into which the bent portion is engaged and the engaging portion is bent.