JPS62293948A - Motor actuator - Google Patents

Abstract

PURPOSE:To facilitate fitting work and make compact a device without requiring screws, screwed bosses, and the like, by engaging salient pieces arranged vertically on a fitted unit, with grooves formed on an actuator, and by fitting and fixing the salient pieces. CONSTITUTION:In narrow grooves 14 formed on both in sides of the groove 12b of a lower case 2b on the main 1 of a motor actuator, the projected sections 15c of a plate spring 15a constituting a check means 15 are inserted, and from the upper side, a upper case 2a is combined with. Then, salient pieces 21 arranged vertically on a fitted unit 20 are inserted through slots 11 on the bottom surface of the engaging sections 10 of the main unit 1, from the lower side, and the salient pieces 21 are inserted into grooves 12a, 12b, and the click 15b of the check means 15 are pushed against the salient pieces 21 by the plate springs 15a. Besides, in case that the main unit 1 is removed from the fitted unit 20, the expanded sections 15d of the plate springs 15a are strongly pushed from the external section and the plate springs 15a are reversed and bent backward and the click units 15b are released from cutting into the salient pieces 21.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Industrial Application Field] This invention relates to a motor used mainly to move an air mix door, an inside/outside air switching door, or other doors of an automobile air conditioner. The present invention relates to an actuator, and in particular to a motor actuator with improved attachment to an air conditioning unit or the like.

[Prior Art] Conventionally, this type of motor actuator has been manufactured by providing a mounting post B in which a screw hole A is formed on an air conditioning unit or the like (an object C to be mounted), as shown in FIG. Attach the mounting tab f on which e is formed to the motor actuator body d.
By protruding from the flange f and fixing the lug f to the mounting post b with screws.

The attachment was fixed to the object C to be attached.

[Problems to be Solved by the Invention] In the conventional motor actuator described above, a screw g with a nominal diameter of about 41 cm is used for mounting and fixing, so the mounting post b and the ear piece f, which have a diameter of at least about loam, are used for mounting and fixing. It was necessary to form these at three to four locations around the motor actuator body d. Therefore, a relatively large space is required for mounting the motor actuator, and this type of device is often disposed within a limited space and is required to be as compact as possible.

This was a major drawback.

Furthermore, since it is necessary to tighten screws at three to four locations in order to attach the motor actuator, the work is time-consuming, and there has been a demand for a reduction in the work time.

It is an object of the present invention to eliminate such conventional drawbacks and provide a motor actuator that requires only a small amount of space for installation, is easy to install, and does not require much time.

[Means for Solving the Problems] A motor actuator according to the present invention for solving the above problems will be explained based on FIG. 1 corresponding to an embodiment. Groove 12 into which the protruding piece 21 is inserted
a, 12b, and a retaining means 15 that engages with the protrusion 21 inserted into the grooves 12a, 12b to prevent the protrusion 21 from coming out of the grooves 12a, 12b.

[Operation] When the projecting piece 21 provided upright on the mounted body 20 is inserted into the grooves 12a, 12b of the motor actuator, the retaining means 15 engages with the projecting piece 21, and the projecting piece 21 is prevented from coming out from the groove 12a, 12b. The motor actuator is attached to the attached object 20.
The installation is fixed.

[Embodiment] An embodiment of the present invention will be described based on FIGS. 1 to 4.

FIG. 3 is a perspective view showing a state before the motor actuator of this embodiment is attached to an object to be attached.

The motor actuator main body l includes upper and lower cases 2a and 2b formed by injection molding synthetic resin, for example.
The interior is equipped with a printed circuit board to which electric components (not shown) are wired, a motor, a reduction gear train, etc., and the arm 3 connected to an object to be operated such as an air mix door is connected to the It is attached to the output shaft 4 of the reduction gear train. The rotation of the motor driven by the control signal causes the arm 3 to rotate via a reduction gear train, thereby driving the object to be operated.

Reference numeral 20 denotes an air conditioning unit case (mounted body) made of, for example, synthetic resin, to which the motor actuator main body l is attached, and on its upper surface, four protrusions 21 made of synthetic resin and having a rectangular cross section are integrally molded with the mounted body 20. It is erected by
Engagement portions 10 that engage with the protruding pieces 21 are provided at, for example, four equally spaced locations on the peripheral edge of the motor actuator main body 1.

FIG. 2 is a partial perspective view showing the engaging portion 10 in an exploded and partially cutaway state, and FIG. 1 is a side sectional view showing the engaging portion 10 in a state in which the protruding piece 21 is engaged with the engaging portion 10. .

At the bottom of the lower case 2b, a hole through which the protruding piece 21 is loosely inserted is bored near the side wall 2C, and above the hole,
Continuing with the hole 11, a groove 12b is formed to cut out the lower case 2b toward the side wall 2C. In the upper case 2a, a notch (iii112a) is formed in the upper case 2a toward the side wall in the same shape as the groove 12b. Also, at the contact portion between the upper case 2a and the lower case 2b, there is a step along the side wall. 13
a and 13b are formed so as to fit into each other.

15 is engaged with the protruding piece 21, and the protruding piece 21 is in the groove 12a,
12b, and this slip-off preventing means 1 is provided on both side walls of the groove 12b of the lower case 2b.
A narrow groove 14 into which the holder 5 is inserted and fixed is formed.

The retaining means 15 is composed of a flat spring 15a made of a thin metal plate and a claw body 15b integrally formed at the upper end of the flat spring, and is formed to protrude laterally above and below both sides of the flat spring 15a. The protrusion 15c is inserted into the narrow groove 14 formed on both sides of the groove 12b of the lower case 2b, and the upper case 2a is assembled from above so as to cover the narrow groove 14, as shown in FIG. As shown by the two-dot chain line, the retaining means 15 is fixed to the grooves 12a and 12b.

In addition, a circular bulge 15d is formed at the center of the leaf spring 15a, and when the center is pushed strongly from the outside, it swells as shown in FIG. The protruding portion 15d is inverted and swells inward, and the leaf spring 15a remains in an inverted state. In this way, the leaf spring 15a has an inverting property, and in the inverted state, the leaf spring 15a bends outward and stands still.

Next, the operation of the above embodiment will be explained.
0 and the motor actuator body l
and the engaging part 10 as shown in FIG. 3, and insert the protruding piece 21 into the hole 11 on the bottom surface of the engaging part 10 from below. Then, as shown in FIG.
The claw body 15b is pressed against the protruding piece 21 by the leaf spring 15a. When the protrusion 2'1 moves in the direction of coming out of the grooves 12a, 12b, the claw body 15b bites into the protrusion 21, and the protrusion 21 cannot come out of the grooves 12a, 12b.

As described above, according to the present invention, the motor actuator is firmly attached and fixed simply by inserting the projections 21 of the attached body 20 into the grooves 12a, 12b of the motor actuator main body l. Moreover, the groove 12a including the wall thickness y of the protruding piece 21
, 12b need only be about 2 to 4 ms in depth Y.

In addition, since the protruding piece 21 only needs to have a simple prismatic shape, the protruding piece 21
Even when 1 is made of synthetic resin, manufacturing of the mold is extremely easy.

When it becomes necessary to remove the motor actuator main body 1 from the attached object 10 due to a failure of the motor actuator, etc., as shown in FIG. By pressing strongly, the leaf spring I5a is reversed, bent outward, and comes to rest, and the engagement between the claw body 15b and the protruding piece 21 is released.
The motor actuator body 1 can be easily removed by simply lifting it upward.

It should be noted that each component of the motor actuator of the present invention is not limited to the shape shown in the above embodiment;
Regarding the protrusions 2a, 12b and the protrusions 21, they may both have a shape other than a rectangle as long as the protrusions can be inserted into the grooves. grooves 12a, 12.
b may be formed to protrude from the side walls of the upper and lower cases 2a, 2b, and the retaining means may have any shape, and the spring body and the claw body are not necessarily provided integrally. It's okay.

[Effects of the Invention] According to the motor actuator of the present invention, the motor actuator can be fixed by simply inserting the protrusion provided upright on the object to be mounted into the groove formed in the motor actuator. The work is extremely easy and the work time is shortened, and thick parts such as bosses for screwing are not required to form the protrusions and grooves, so the equipment can be made more compact and the motor can be installed in a narrow space. This has the effect of allowing the actuator to be attached.

[Brief explanation of drawings]

FIG. 1 is a side partial cross-sectional view showing a state in which a motor actuator according to an embodiment of the present invention is attached to an object to be attached, and FIG. 2 is a partially cutaway side view of the motor actuator according to the same embodiment. A perspective view, FIG. 3 is a perspective view showing a state before the motor actuator of the same embodiment is attached to an object to be attached,
FIG. 4 is a side partial sectional view showing a state in which the motor actuator of the same embodiment is removed from an attached object, and FIG. 5 is a side partial sectional view of the conventional motor actuator. DESCRIPTION OF SYMBOLS 1... Motor actuator main body, 2a... Upper case, 2b... Lower case, 10... Engagement part, 11...
- Hole, 12a... Groove, 12b... Groove, 15... Retaining means, 15a... Leaf spring, 15b... Claw body,
15d... bulging portion, 20... object to be attached, 21...
protrusion.

Claims (4)

[Claims] 1. The object to be attached has a groove into which a protruding piece is inserted, and a retaining means that engages with the protruding piece inserted into the groove to prevent the protruding piece from coming out of the groove. motor actuator. 2. 2. The motor actuator according to claim 1, wherein said retaining means comprises a spring body and a pawl body pressed against said projecting piece by the spring body. 3. 3. The motor actuator according to claim 2, wherein the spring body is a plate spring, and the pawl body is integrally provided with the plate spring. 4. 4. The motor actuator according to claim 3, wherein the leaf spring has a reversible property, and in the reversed state, the engagement between the pawl and the protrusion is released.