JP2554615Y2 - Micro switch fixed structure of rotation control 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 structure for fixing a micro switch of a rotation control device having a cam gear and a micro switch for stopping the rotation of the motor according to the amount of rotation of the motor.

[0002]

2. Description of the Related Art Conventionally, as the above-mentioned rotation control device,
For example, a cam gear connected to the rotating shaft of the motor via a speed reduction mechanism and having two cam projections on the outer periphery and in the axial direction, and two micro switches respectively corresponding to the cam projections of the cam gear are provided. There is something. This rotation control device is incorporated in the motor case of the motor, and controls the rotation of the motor in a state where the cam projections press the respective operating parts of the corresponding micro switches with the rotation of the cam gear by the output of the motor. It is designed to stop.

As shown in FIG. 4, the two micro switches 55 and 56 have a motor case 51 and a shaft hole 52a provided at one end thereof fitted to a tip of a support shaft 54 of a cam gear 53. It is provided between the switch pressing plate 52 and the switch pressing plate 52 in a state of being overlapped and having a predetermined positional relationship with respect to the cam projections 53a and 53b of the cam gear 53. In this case, the other end of the switch holding plate 52 is provided with a screw insertion hole 52.
b and 52b are formed, and screw holes 51b and 51b are formed in the switch mounting portion 51a of the motor case 51. The micro switches 55 and 56 are provided with screw insertion holes 52b and 52b of the switch holding plate 52 and Screw through holes 55a, 56 of each of the two microswitches 55, 56
The screws 57, 57, which are sequentially penetrated through “a”, are fixed by screwing into the screw holes 51 b, 51 b on the motor case 51 side.

[0004]

However, in the above-mentioned micro switch fixing structure of the rotation control device, when the micro switches 55 and 56 are fixed, the operating portion of one micro switch 55 is connected to one cam of the cam gear 53. If the positional relationship between the two when the projection 53a presses (or when the other cam projection 53b of the cam gear 53 presses the operating portion of the other microswitch 56) is out of tolerance, the cam projection is There has been a problem that the pressing and releasing states of the operating portion of the microswitch 55 (56) by 53a (53b) are incomplete, and rotation control cannot be performed reliably.

In order to avoid such a situation, when the micro switches 55 and 56 are fixed, the positions of the micro switch 55 and one cam projection 53a and the positions of the micro switch 56 and the other cam projection 53b are set. Since it is necessary to prevent the relationship from shifting, the cam gear forming operation and the shaft holes 52a,
A lot of time is required for the drilling operation of the screw insertion hole 52b to increase the molding and processing accuracy, and as a result, there is a problem that the manufacturing cost is high. It has been a conventional problem to solve the above problem.

[0006]

SUMMARY OF THE INVENTION This invention has been made in view of the above-mentioned conventional problems, and it is possible to surely control the rotation of a motor and to reduce the manufacturing cost. It is an object to provide a microswitch fixing structure of the device.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a case,
A cam gear rotatably supported by the case and having two cam projections on the outer periphery, and an operating portion which is arranged in an overlapping state and which is pressed by the two cam projections as the cam gear rotates. First and second microswitches, a shaft hole rotatably supported at a position concentric with the cam gear, and a screw insertion hole formed in an oval shape and fixed to the case. A micro switch fixing structure for a rotation control device comprising: a bracket disposed over the first and second micro switches; wherein the first and second micro switches each have a fitting hole; The case has a concave shape, is formed slightly larger than the size of the first microswitch, has a cutout portion into which the first microswitch is fitted, and a convex shape formed in the cutout portion.
And a first convex portion fitted into the fitting hole of the micro switch, and a second convex portion fitted into the fitting hole of the second micro switch is formed on the bracket. It is characterized in that the configuration of the micro switch fixing structure of such a rotation control device is a means for solving the above-mentioned conventional problems.

[0008]

In the micro switch fixing structure of the rotation control device according to the present invention, the second micro switch is positioned on the first micro switch by the bracket while the first micro switch is positioned on the case side. When the bracket is fixed to the case, the first microswitch and the second microswitch are pressed and fixed to the case. Therefore, the positioning of the second micro switch is performed by the single bracket, and the first and second micro switches are fixed to the case side.

At this time, the second micro switch is fixed from a state of being supported rotatably about the support shaft of the cam gear, so that the second micro switch is adjusted to have a predetermined positional relationship with the cam projection. It is fixed after being done. Therefore, in addition to improving the accuracy of the rotation control, the manufacturing cost can be reduced.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIGS. 1 to 3 show an embodiment of a micro switch fixing structure of a rotation control device according to the present invention.
In this embodiment, a case where the micro switch fixing structure of the rotation control device according to the present invention is applied to a rotation control device incorporated in a sunroof motor will be exemplified.

That is, the sunroof motor 1 shown in FIG.
Comprises a motor main body 2 and a reduction mechanism 5 housed in a gear case 4a formed integrally with an end bracket 4 for closing the motor case 3 of the motor main body 2, and the rotation control device 10 has the same end mechanism as the gear case 4a. Bracket 4
And a printed circuit board 6 in a circuit case 4b integrally formed with the printed circuit board.

The rotation control device 10 engages with a pinion (not shown) of the speed reduction mechanism 5 and rotates about the support shaft 11 by the output of the motor body 1, as shown in FIG. Two corresponding to the cam gear 12 and two cam projections 12a and 12b provided on the outer periphery of the cam gear 12 and in the axial direction (only one is shown in FIGS. 1 and 2A).
Of the cam gear 12 according to the rotation of the cam gear 12 due to the output of the motor main body 1, one or both of the cam protrusions 12a, 12b of the cam gear 12 are provided. 12b is each operating portion 13 of the corresponding microswitches 13 and 14.
The rotation of the motor main body 2 is stopped in the state where a and 14a are pressed.

The micro switches 13 and 14 are shown in FIG.
(A) As shown in (b), a shaft hole 15 provided at one end side is provided.
a to the tip of the support shaft 11 of the cam gear 12, and a bracket mounting wall 4c of the circuit case 4b.
Are provided in a state of being overlapped with the notch 4d formed in the above. In this case, convex portions 4e, 4e as switch support portions are provided in the intermediate portion of the notch portion 4d, and these convex portions 4e, 4e have through holes 13b provided in the microswitch 13 (one of the microswitches). , 13b are fitted, the micro switch 13 is fitted into the notch 4d, so that the micro switch 13 is
2a (one cam projection) can be brought into a predetermined positional relationship.

The other end of the bracket 15 extends downward from both side edges in FIG.
(The other microswitch) longitudinal end surfaces 14c, 1
4c are provided with the hanging pieces 15b, 15b, and the microswitch 1 is provided between the hanging pieces 15b, 15b in contact with the microswitch 14.
Convex portion 15 fitted into through holes 14b, 14b provided in
c, 15c are provided, and the bracket 15
c, 15c are connected to the through holes 14b, 1 of the microswitch 14.
The micro switch 14 can be locked by sandwiching the micro switch 14 between the hanging pieces 15b, 15b in a state where the micro switch 14 is fitted to the 4b.

Further, both hanging pieces 15 of the bracket 15
b, 15b, each of which has a flange 1 extending in a direction away from each other and having screw insertion holes 15e, 15e, respectively.
5d, 15d are provided. The bracket 15 is provided with screws 16, 16 through both screw insertion holes 15e, 15e.
Is screwed into screw holes 4f, 4f provided in the vicinity of the notch 4d of the bracket mounting wall 4c so as to be mounted on the bracket mounting wall 4c.

The screw insertion hole 15 of the bracket 15
e and 15e are formed in an elliptical shape along the tangential direction of the cam gear 12 and the upper part of the notch 4d is widened to form the microswitch 14 via the bracket 15 so that the microswitch 14 is formed. The micro switch 14 can be rotated around the support shaft 11 so that a predetermined positional relationship is established with respect to the cam projection 12b (the other cam projection) when the micro switch 14 is fixed. It can be in a state.

Next, the procedure for fixing the micro switches 13 and 14 of the rotation control device 10 to the circuit case 4b will be described.

First, the microswitch 13 is fitted into the notch 4d of the bracket mounting wall 4c of the circuit case 4b. At this time, the through holes 13b of the microswitch 13
By fitting the projection 13b into the projections 4e, 4e of the notch 4d, the microswitch 13 is brought into a state of a predetermined positional relationship with the cam projection 12a of the cam gear 12.

Next, the through-hole 14 of the microswitch 14
The micro switch 14 is fitted between both the hanging pieces 15b, 15b of the bracket 15 with the b, 14b fitted to the projections 15c, 15c of the bracket 15, and the shaft hole 15a of the bracket 15 is The flanges 15 d, 15 d are fitted to the support shaft 11 of the gear 12.
Abuts against the bracket mounting wall 4c of the circuit case 4b, and the screws 16,
16 is screwed into the screw holes 4f, 4f of the bracket mounting wall 4c, and the micro switches 13, 14 are fixed in an overlapping state.

When the screws 16 are screwed in, the position of the micro switch 14 can be adjusted by rotating the micro switch 14 about the support shaft 11 of the cam gear 12 via the bracket 15. The microswitch 14 can be fixed in a predetermined positional relationship with respect to the cam projection 12b, regardless of the molding accuracy of the microswitch 14 or the like.

In the embodiment described above, the case where the micro switch fixing structure of the rotation control device according to the present invention is applied to the rotation control device 10 of the sunroof motor 1 is exemplified, but the invention is not limited to this.

Further, the detailed structure of the micro switch fixing structure of the rotation control device according to the present invention is not limited to the above embodiment.

[0024]

As described above, the micro switch fixing structure of the rotation control device according to the present invention has the following features.
The second microswitch is positioned by the bracket with the first microswitch positioned on the case side.
The first micro switch and the second micro switch are fixed to the case by being positioned on the micro switch, and the bracket is fixed to the case. Therefore, the second microswitch can be positioned by the single bracket, and the first and second microswitches can be fixed to the case side. Further, since the second micro switch is fixed from a state of being supported rotatably about the support shaft of the cam gear, it is adjusted so as to have a predetermined positional relationship with respect to the cam projection. Fixed. Therefore, it is possible to improve the accuracy of the rotation control and to achieve an excellent effect that the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of a sunroof motor showing an embodiment of a micro switch fixing structure of a rotation control device according to the present invention.

FIG. 2A is an enlarged plan view of the rotation control device shown in FIG. 1; FIG. 2B is an explanatory cross-sectional view taken along the line AA in FIG.

FIG. 3 is an explanatory perspective view of an assembly showing a procedure for fixing a micro switch of the rotation control device shown in FIG. 1;

FIG. 4 is an assembly perspective explanatory view showing a procedure for fixing a micro switch having a micro switch fixing structure of a conventional rotation control device.

[Explanation of symbols]

4b (Case) Circuit case 4d Notch 4e (First convex) Convex 10 Rotation control device 12 Cam gear 12a Cam protrusion 12b Cam protrusion 13 (First micro switch) One micro switch 13a Actuator 13b (fitting) (Mating hole) Through hole 14 (Second micro switch) The other micro switch 14a Actuator 14b (Mating hole) Through hole 15 Bracket 15a Shaft hole 15c (Second convex portion) Convex portion 15e Screw insertion hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A case, and two cam projections are rotatably supported by the case and are provided on an outer periphery thereof.
It is arranged in a state of being overlapped with a raised cam gear, and with the rotation of the cam gear,
It has an operating part that is pressed by each of the two cam projections.
First and second micro switches, and a shaft hole rotatably supported at a position concentric with the cam gear.
And a screw formed in an oval shape and fixed to the case
An insertion hole is formed, and the first and second microswitches are formed.
And a bracket disposed over the switch.
A micro switch fixing structure, wherein the first and second micro switches are fitted with each other.
A hole is formed, and the case has a concave shape , and the first micro switch is formed.
Is formed slightly larger than the size of the
Notch into which the micro switch is fitted, and this notch
The first micro switch is formed in a convex shape in the portion, and
A first protrusion fitted into the fitting hole is formed, and the bracket is fitted with the second micro switch.
It is noted that the second convex portion to be fitted into the hole is formed.
The micro switch fixed structure of the rotation control device.