JPH0528931Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a motor connection structure in a motor actuator used to drive a door or the like of a vehicle air conditioner.

[Prior Art] When both the front and rear ends of a motor are fixed to a housing of a motor actuator, the housing vibrates due to rotation of the motor and generates noise. Conventionally, this type of motor actuator has only one end of the motor fixed to the motor actuator housing with screws, and electrical connections are made by soldering the motor lead wires to terminals on the printed circuit board. I was going there because of that.

[Problems to be solved by the invention] In the conventional motor connection structure described above, the lead wires, which hang around in space and are difficult to position, are soldered to the terminals of the printed circuit board, making workability extremely poor. However, assembly work for electrically connecting the motor and printed circuit board takes time, which increases manufacturing costs.

As a countermeasure against this problem, for example, an input terminal may be protruded from the other end of the motor, and electrical connection may be made by soldering the input terminal to a printed circuit board. However, in this case, the rotation of the motor is transmitted to the printed circuit board, which vibrates and resonates within the housing, resulting in a source of noise within the vehicle interior.

The present invention was developed to solve these problems, and provides a motor connection that securely fixes the motor within the housing, allows easy electrical connection to the printed circuit board, and does not generate noise. The purpose is to provide structure.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the motor connection structure in the motor actuator according to the present invention fixes only one end of the motor to the housing of the motor actuator, and , an input terminal is formed on the other end of the motor, and a narrow and elongated part of the printed circuit board fixed in the housing has a narrow and long tip end in the longitudinal direction for absorbing the vibrations of the motor. The present invention is characterized in that a vibration absorbing section with a free end is formed of the printed circuit board itself, and an input terminal of the motor is fixed and electrically connected to the free end side of the vibration absorbing section.

[Effect]

Since only one end of the motor is fixed to the housing of the motor actuator, compared to a case where the motor is fixed to the housing at both ends, vibrations transmitted from the motor to the housing, vibrations transmitted to the printed circuit board via the housing, etc. The generation of vibration noise is small.

On the other hand, the other end of the motor is fixed to a free end of a vibration absorbing section formed on a printed circuit board, and at the same time as the fixed end, an input terminal is electrically connected to the printed circuit board. Therefore, vibrations at the other end of the motor are absorbed and attenuated by the vibration absorbing section, and are not transmitted to the entire printed circuit board.

[Embodiment] FIG. 1 shows a first embodiment of the present invention, and FIG. 2 is a plan view of its printed circuit board.

In the figure, reference numeral 1 denotes a printed circuit board having electrical wiring formed on a synthetic resin board or the like, and is fixed within the housing 2 of the motor actuator by screws or the like. Reference numeral 3 designates a receiving portion formed at the bottom of the housing 2, against which the printed circuit board 1 is supported. In the non-fixed part of the printed circuit board 1 that is not fixed to the housing 2, there is a vibration absorbing part 4, which is narrow and elongated and has a free end 1a at the tip end in the longitudinal direction, for absorbing vibrations generated by the motor 6. It is formed of the printed circuit board 1 itself, and even if vibration occurs on the free end portion 1a side of the tip, the vibration is attenuated and absorbed by the narrow and elongated vibration absorbing portion 4. . In this embodiment, the vibration absorbing parts 4 are formed in a pair (that is, two) in parallel in a straight line, and a metal support 5 made of copper alloy or the like is erected on each free end 1a side. There is. The support column 5 is electrically connected to a switching circuit (not shown) by wiring formed on the printed circuit board 1.

The front end side of the motor 6 is fixed to the floor of the housing 2 from below by two fixing screws 10 in a so-called cantilevered state. On the other hand, on the rear end surface of the motor 6, a pair of input terminals 7 that receive power supply are provided.
It is provided in a protruding manner with approximately the same width as the interval between the pair of pillars 5 described above. A hole is formed in each of the input terminals 7, and the pillar 5 is inserted therethrough, and the input terminal 7 and the pillar 5 are fixed by, for example, soldering. In this way, the motor 6 is attached to the printed circuit board 1 by the pillar 5.
At the same time, the input terminal 7 is electrically connected to the printed circuit board 1 via the support column 5 . In this embodiment, the motor 6 is fixed floating so as not to come into contact with the printed circuit board 1. 8 is motor 6
A gear 9 fixed to the output shaft of is an output arm driven by the motor 6, and a group of reduction gears is provided in the housing 3 between the gear 8 and the output arm 9; is omitted.

According to the device of this embodiment configured in this way,
Although vibrations generated by the rotation of the motor 6 are transmitted to the support column 5, the vibrations are absorbed and attenuated by the vibration absorbing portion 4, and are not transmitted to the entire printed circuit board 1, so that no noise is generated. Furthermore, during assembly, the motor 6 is mechanically fixed to the printed circuit board via the support 5, and at the same time, the input terminal 7 of the motor 6 and the printed circuit board 1 are electrically connected, making the assembly process extremely efficient. Moreover, it does not require positionally unstable work such as soldering lead wires.
The time required for assembly can be significantly reduced.

In the above embodiment, the input terminal 7 of the motor 6 was fixed and connected to the post 5 erected on the printed circuit board 1 by soldering, but the present invention is not limited to this. Alternatively, the input terminal 7 of the motor may be directly fixed and connected to the free end 1a without using the support 5.

FIG. 3 shows a second embodiment of the present invention, in which only the vibration absorbing portion of the printed circuit board is
Since this embodiment is different from the embodiment shown in FIG. 1, only a plan view of the printed circuit board 1 is shown. According to this embodiment, the vibration absorbing portion 24 is configured to be two-dimensionally bent, so that the vibration absorbing ability is further improved. Also,
The vibration absorbing portion may be bent three-dimensionally, which further improves the vibration absorbing ability.

In this way, if the shape of the vibration absorbing part is narrow and elongated, and the tip side in the longitudinal direction is a free end, it can be formed into an appropriate shape depending on the purpose of use of the motor actuator. As shown in the figure, the narrow and elongated vibration absorbing portion 34 may be located at one location, or may have other shapes.

[Effects of the invention] According to the motor connection structure of the motor actuator of the invention, the input terminal protruding from the motor is fixed to the printed circuit board and electrically connected at the same time, so assembly work is easy. , the assembly time is significantly shortened and manufacturing costs are reduced.Furthermore, the vibration of the motor transmitted to the printed circuit board via the housing is negligible, and the vibration transmitted directly from the motor to the printed circuit board is very small. Since the vibration is absorbed in the formed vibration absorbing portion and is not transmitted to the entire printed circuit board, it has the excellent effect of making it possible to obtain a quiet motor actuator that does not generate noise. In addition, since one end of the motor is fixed to the housing and the other end is fixed to the free end of the vibration absorbing part formed on the printed circuit board, the motor can be stably installed and fixed within the motor actuator. Since the vibration absorbing part is formed by the printed circuit board itself, it has excellent effects such as no special parts or work to attach the parts, and it can be realized at a very low cost. has.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a first embodiment of the present invention;
FIG. 3 is a plan view of a printed circuit board according to a second embodiment of the present invention, and FIG. 4 is a plan view of a printed circuit board according to a third embodiment of the present invention.
Housing, 4... vibration absorbing part, 5... support, 6
. . . Motor, 7 . . . Input terminal, 10 . . . Fixing screw, 24 . . . Vibration absorbing portion, 34 . . . Vibration absorbing portion.

Claims (1)

[Claims for Utility Model Registration] (1) Only one end of the motor is fixed to the housing of the motor actuator, and an input terminal is formed on the other end of the motor, and a printed circuit board is fixed in the housing. A vibration absorbing part, which is narrow and elongated and has a free end in the longitudinal direction, is formed on the non-fixed part of the board to absorb the vibration of the motor, and the vibration absorbing part is free. A motor connection structure in a motor actuator, characterized in that an input terminal of the motor is fixed and electrically connected to the end side. (2) The motor in the motor actuator according to claim 1, wherein the input terminal of the motor and the printed circuit board are fixed and connected via a support provided on the printed circuit board. connection structure. (3) A motor connection structure in a motor actuator according to claim 1 or 2, wherein the vibration absorbing portion of the printed circuit board is curved two-dimensionally or three-dimensionally.