JPH064541U - Air conditioner link device - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the tilt of the drive lever and the deformation of the drive lever with the shaft as the fulcrum when the drive force is applied to the drive lever. [Structure] A shaft 2 provided in an air-conditioning case 6, a drive lever 3 rotatably attached to the shaft 2, and a projecting projection on the air-conditioning case 6, one end surface 4a of which is one surface 3a of the drive lever 3.
In the link device 1 of the air conditioner including the support projections 4 that face each other with a clearance maintained, the other surface 3 of the drive lever 3
It is characterized in that the air conditioning case 6 is provided with a pressing projection 5 having a surface 5c which faces the surface b while maintaining a clearance.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a link device for transmitting a driving force for rotating a damper provided in an air conditioner to the damper.

[0002]

[Prior art]

 FIG. 6 is an exploded perspective view showing an example of a link device of a conventional air conditioner, FIG. 7 is a side view of the conventional example, and FIG. 8 is a side view showing a usage state of the conventional example.

Referring to FIGS. 6 to 8, a link device 1 for a conventional air conditioner includes a shaft 2 provided in an air conditioning case 6, and a drive lever 3 rotatably attached to the shaft 2. Also, the one end surface 4a is provided on the air-conditioning case 6 so as to project, and the support projection 4 is opposed to the one surface 3a of the drive lever 3 while keeping a clearance.

The drive lever 3 is formed with cam grooves 3c, 3d and 3e. One end of an intermediate lever or the like (not shown) is fitted into these cam grooves 3c, 3d, 3e.

[0005]

[Problems to be solved by the device]

 In the case of the link device 1 of the conventional air conditioner, as shown in FIG. 8, when the driving force F for rotating the drive lever 3 is applied to the drive lever 3 via the control wire 15 or the like, the drive lever 3 is moved by the arrow mark. As shown in, the shaft 2 provided in the air conditioning case 6 may be used as a fulcrum to incline. Conventionally, a supporting protrusion 4 is provided on the air conditioning case 6 in order to suppress the inclination of the drive lever 3. That is, when the drive lever 3 is tilted with the shaft 2 as a fulcrum, one surface 3a of the drive lever 3 (generally, the surface facing the air conditioning case 6) abuts on the one end surface 4a of the support protrusion 4 and thereby the drive lever 3a. It is designed so that 3 does not lean any further.

The control wire 15 and the like are connected so that the driving force F becomes a force parallel to the other surface 3 b of the driving lever 3. However, in reality, the driving force F often tilts with respect to the other surface 3b of the drive lever 3 due to an error in the mounting position of the control wire 15 or the like. When the driving force F is directed obliquely downward (toward the air-conditioning case 6) with respect to the other surface 3b of the driving lever 3, this driving force F causes the connecting portion of the driving lever 3 with the control wire 15 or the like (hereinafter The "driving point" swings downward with the shaft 2 as the fulcrum. In this case, as described above, the one surface 3a of the drive lever 3 comes into contact with the one end surface 4a of the supporting protrusion 4, so that the inclination of the shaft 2 of the drive lever 3 as a fulcrum is pressed. However, when the driving force F is directed obliquely upward with respect to the other surface 3b of the driving lever 3, the driving point moves upward due to the component force of the driving force F in the direction perpendicular to the other surface 3b of the driving lever 3. Can be lifted. At this time, the portion of the drive lever 3 on the side opposite to the drive point tries to move downward with the shaft 2 as a fulcrum, but is pressed by the support protrusion 4 as described above. As a result, the drive lever 3 is bent and deformed. However, the deformation of the drive lever 3 cannot be prevented by the support protrusion 4. Due to this deformation of the drive lever 3, the intermediate lever is disengaged from the cam grooves 3c, 3d, 3e, and due to the deformation of the drive lever 3, a force for pulling out the screw 10 for fixing the drive lever 3 to the shaft 2 is pulled out. As it occurs, the screw 10 came off.

[0007] Therefore, an object of the present invention is to provide an air conditioner capable of preventing the drive lever from being deformed while suppressing the inclination of the drive lever with the shaft serving as a fulcrum when the drive force is applied to the drive lever. To provide a link device.

[0008]

[Means for Solving the Problems]

 According to the present invention, a shaft provided in an air conditioning case, a drive lever rotatably attached to the shaft, and a protrusion provided in the air conditioning case, one end surface of which is a clearance with one surface of the drive lever. In a link device for an air conditioner including supporting projections that are kept facing each other, a holding projection having a surface that faces the other surface of the drive lever while keeping a clearance is provided in the air conditioning case. The link device of the air conditioner is obtained.

[0009]

[Action]

 In the case of the present invention, the swing of the drive lever with the shaft as the fulcrum pushes the drive lever by sandwiching the drive lever between the supporting projection and the pressing projection, so that the swing of the drive lever is smaller than in the conventional case. Further, the upward deformation of the drive lever is prevented by contacting the other surface of the drive lever with the surface of the pressing protrusion facing the drive lever.

[0010]

【Example】

 1 is a side view of a link device of an air conditioner according to a first embodiment of the present invention. Referring to FIG. 1, the link device 1 includes a shaft 2, a drive lever 3, a support protrusion 4, and a holding protrusion 5.

The shaft 2 has a cylindrical shape and is provided on the outer surface of the air conditioning case 6 so as to project therefrom. An air passage is formed inside the air-conditioning case 6, and a damper (not shown) is rotatably arranged in the air passage.

The drive lever 3 has a substantially disc shape and is rotatably attached to the shaft 2 with a screw 10.

The support protrusion 4 has a substantially columnar shape and is provided on the outer surface of the air conditioning case 6 so as to project therefrom. The upper end surface 4a of the support protrusion 4 faces the lower surface 3a of the drive lever 3 with a slight clearance.

The pressing projection 5 has a substantially inverted L shape and is provided on the outer surface of the air conditioning case 6 so as to project therefrom. The pressing protrusion 5 is composed of a column portion 5a and a pressing portion 5b. The lower surface of the pressing portion 5b is a drive lever facing surface 5c that faces the upper surface 3b of the drive lever 3 with a slight clearance.

FIG. 2 is an exploded perspective view of a link device for an air conditioner according to a second embodiment of the present invention, and FIG. 3 is a sectional view taken along line AA of FIG. With reference to FIGS. 2 and 3, the link device 1 also includes a shaft 2, a drive lever 3, a support protrusion 4, and a holding protrusion 5.

The drive lever 3 is provided with three cam grooves 3c, 3d and 3e. Into these cam grooves 3c, 3d, 3e, pins (not shown) protruding from the intermediate lever are fitted. The drive lever 3 is rotatably attached to the shaft 3 with a screw 10 with a washer 11 interposed.

The pressing protrusion 5 has a curved plate shape, and a groove 5 d parallel to the outer surface of the air conditioning case 6 is formed in the upper portion thereof. The upper surface of the wall surface that defines the groove 5d is a drive lever facing surface 5c that faces the upper surface 3b of the drive lever 3 with a slight clearance, and the lower surface is the upper surface 4a of the support protrusion 4. Similarly, it is a drive lever facing surface 5e that faces the lower surface 3a of the drive lever 3. That is, the pressing protrusion 5 of this embodiment also has the function of the supporting protrusion 4.

FIG. 4 is a side view of a link device for an air conditioner according to a third embodiment of the present invention. Referring to FIG. 4, the holding projection 5 of the link device 1 of the present embodiment is provided on the vertical wall surface of the air conditioning case 6. For this reason, in the presser projection 5, the portion corresponding to the column portion 5a of the presser projection 5 in the first embodiment is omitted. The other parts have the same constructions as those of the first embodiment shown in FIG. 1, and those parts having the same constructions are designated by the same reference numerals as those in FIG. 1 and their explanations are omitted.

FIG. 5 is a side view of a link device for an air conditioner according to a fourth embodiment of the present invention. With reference to FIG. 5, the presser projection 5 of the link device 1 of the present embodiment has a support 5a and a presser 5b which are separate bodies, and these are integrated by a screw 12. The other parts have the same configuration as that of the first embodiment shown in FIG. 1, and those parts having the same configuration are designated by the same reference numerals as those in FIG. 1 and their explanations are omitted.

[0020]

[Effect of device]

 The link device for an air conditioner of the present invention supports swinging about the axis of the drive lever as a fulcrum, and presses the drive lever by sandwiching the drive lever between the protrusion and the pressing protrusion, so that the drive force when the drive force is applied to the drive lever is applied. The tilt with the lever axis as the fulcrum can be reduced. Therefore, the link device for an air conditioner of the present invention can accurately and reliably transmit the driving force transmitted here to the damper.

Further, the link device for an air conditioner of the present invention can prevent the drive lever from being deformed, so that the intermediate lever or the like can be prevented from coming off from the drive lever, and the drive lever can be deformed. Since it is possible to prevent this, there is no force applied to the screw that fixes the drive lever to the shaft in the direction to pull it out, and thus it is possible to prevent the drive lever from falling off the shaft.

[Brief description of drawings]

FIG. 1 is a side view of a link device of an air conditioner according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a link device for an air conditioner according to a second embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a side view of a link device for an air conditioner according to a third embodiment of the present invention.

FIG. 5 is a side view of a link device for an air conditioner according to a fourth embodiment of the present invention.

FIG. 6 is an exploded perspective view showing an example of a link device of a conventional air conditioner.

FIG. 7 is a side view of the conventional example shown in FIG.

FIG. 8 is a side view showing a usage state of the conventional example shown in FIG.

[Explanation of symbols]

 1 link device 2 axis 3 drive lever 3a lower surface 3b upper surface 4 supporting protrusion 4a upper surface 5 holding protrusion 5c driving lever facing surface 6 air conditioning case

Claims (1)

[Scope of utility model registration request] 1. A shaft provided in an air-conditioning case, a drive lever rotatably attached to the shaft, and a projecting projection on the air-conditioning case, one end surface of which keeps a clearance with one surface of the drive lever. In a link device for an air conditioner including supporting projections facing each other, a pressing projection having a surface facing the other surface of the drive lever while maintaining a clearance is provided in the air conditioning case. Device link device.