JP6128615B1 - Motor mounting structure - Google Patents

Abstract

There is provided a motor mounting structure capable of easily and securely mounting a motor to a mounting member without requiring separate fixing parts. A motor 10 is attached to a recess 15 having a bottom portion of a mounting member 14 made of synthetic resin, and projecting portions 11 projecting outward are spaced apart in a circumferential direction on an outer peripheral surface of a case 10a of the motor 10. Are provided at a plurality of locations, and are on the inner peripheral surface of the recess 15 and closer to the opening of the recess 15 than the protrusion 11, and engage the protrusion 11 to move the motor 10 toward the opening. A locking portion 16 for blocking is formed. [Selection] Figure 1

Description

  The present invention relates to a motor mounting structure for mounting the motor in a recess formed in a motor mounting member in equipment.

For example, in a motor-driven electric on-off valve or the like, a motor is attached to an attachment member integrally formed with the valve.
FIG. 4 shows a conventional mounting structure for this type of motor. In FIG. 4, reference numeral 1 is a mounting member integrally formed with the valve or the like. The mounting member 1 has a motor 2 inserted therein. A bottom cylindrical recess 3 is formed.

  On the other hand, the motor 2 has a well-known coil, stator, and rotor incorporated in a cylindrical case 2a. The output shaft integrated with the rotor has a valve body 4 that linearly moves by rotation of the output shaft. Is attached.

  The motor 2 is inserted into the recess 3 of the mounting member 1, the valve body 4 at the tip is disposed in the hole 5 formed in the bottom surface 3 a of the recess 3, and the circuit board to which the terminal 2 b is connected. 2c is housed in the recess 3 in a state of being fixed to the opening of the mounting member 1, and is fixed in a state where the metal plate 6 and the holding spring 7 provided on the opening side of the recess 3 are positioned and prevented from coming off. ing.

FIG. 5 shows another conventional motor mounting structure. In this motor 8, a flange 9 is integrally formed on the outer periphery of the case 8a, and a bolt inserted into the bolt hole 9a of the flange 9 is used. This is fixed to an attachment member (not shown).
In Patent Document 1 below, a motor mounting structure in which the motor is fixed to the mounting member by a similar flange is disclosed.

JP 2000-278905 A

  By the way, in the conventional mounting structure of these motors, in order to fix the motors 2 and 8 to the mounting member, parts such as a metal plate 6 and a holding spring 7 and bolts are separately required. However, there is a problem that the mounting work requires labor.

  This invention is made | formed in view of the said situation, and makes it a subject to provide the attachment structure of the motor which can attach a motor to an attachment member reliably reliably, without requiring components for fixation separately. Is.

In order to solve the above-mentioned problem, the invention according to claim 1 is a structure in which a motor is attached to a recess having a bottom portion of an attachment member made of synthetic resin, and projects outwardly on an outer peripheral surface of the motor case. Rutotomoni provided at a plurality of locations protrusions spaced circumferentially of the outer peripheral surface, a inner circumferential surface of the recess on the opening side of the recess than the protruding portions, the distal end surface of the motor A locking portion is formed that engages with the protrusion at a position in contact with the bottom surface of the recess and prevents the motor from moving toward the opening between the bottom surface. To do.

  According to a second aspect of the present invention, in the first aspect of the present invention, the locking portion is formed in a tapered shape in which a height dimension gradually increases from the opening side toward the bottom surface side. It is characterized by being.

  Furthermore, the invention described in claim 3 is the invention described in claim 2, wherein the protrusion is protruded on both sides of the protrusion in the circumferential direction on the inner peripheral surface of the recess, and the protrusion moves in the circumferential direction. A second locking portion for locking is formed.

  According to the invention according to any one of claims 1 to 3, the motor is inserted into the concave portion of the mounting member, and the protrusion formed on the outer peripheral surface of the case is locked on the inner peripheral surface of the concave portion. By being positioned closer to the bottom side than the portion, the movement of the motor toward the opening side of the mounting member can be prevented by the locking portion.

  In addition, since the protrusions and the locking portions are provided at a plurality of locations spaced in the circumferential direction, the motor can be stably held in the recess. As a result, the motor can be easily and securely attached to the attachment member without requiring additional fixing parts.

  According to the second aspect of the present invention, the engaging portion of the inner peripheral surface of the mounting member is formed in a tapered shape in which the height dimension gradually increases from the opening side toward the bottom surface side. When the motor is inserted into the recess of the mounting member, the protrusion on the outer peripheral surface is pushed along the top surface of the locking portion, so that the protrusion can be easily fitted on the bottom surface side of the locking portion. Can do.

  Furthermore, according to the invention described in claim 3, since the second locking portion that is located on both sides of the protruding portion and prevents movement in the circumferential direction is formed on the inner peripheral surface of the recess, It is possible to reliably prevent the motor from rotating after the attachment and disengagement between the protrusion and the locking portion.

1 is a partial cross-sectional front view showing an embodiment of a motor mounting structure according to the present invention. It is a perspective view of the motor of FIG. The other embodiment of this invention is shown, (a) is a front view, (b) is the sectional view on the AA line of (a). It is the front view which carried out the partial cross section which shows the attachment structure of the conventional motor. It is a perspective view of the motor in the other conventional motor mounting structure.

1 and 2 show an embodiment of a motor mounting structure according to the present invention, and reference numeral 10 in the figure denotes a motor.
This motor 10 has a well-known coil, stator and rotor incorporated in a metal cylindrical case 10a closed at both ends, and the case 10a is drawn on the outer peripheral surface of the case 10a. The plurality of protrusions 11 are molded during press working.

  These protrusions 11 are formed in at least two places (180 ° arrangement) spaced at equal intervals in the circumferential direction, more preferably three places (120 ° arrangement). The protrusions 11 are formed so as to protrude in the radial direction from the outer peripheral surface, and the upper surface thereof is formed in a substantially square shape.

  A valve body 12 that moves linearly by rotation of the output shaft is attached to the output shaft integrated with the rotor of the motor 10. Further, the plurality of terminals 10 b connected to the stator are respectively connected to predetermined positions on the circuit board 13.

On the other hand, the attachment member 14 of the equipment to which the motor 10 is attached is integrally formed of synthetic resin, and the attachment portion of the motor 10 is formed in a substantially bottomed cylindrical recess 15. Then, the position corresponding to the protrusion 11 of the motor 10 a inner peripheral surface of the recess 1 5, respectively locking portion 16 are formed integrally.

These locking portions 16 are each in contact with the position the distal end surface of the motor 10 to the bottom surface 14a of the recess 1 5, the end face 16a the end face 11a of the opening side of the bottom face 14a side of the locking portion 16 of the protrusion 11 It is formed in the position which substantially contacts. Moreover, the latching | locking part 16 is formed in the taper shape which a height dimension increases gradually toward the bottom face 14a side from the opening part side.

Then, the motor 10 is inserted into the recess 15 of the mounting member 14, together with the valve body 12 of the tip is placed in the hole 17 formed in the bottom surface 1 4 a recess 15, the engaging projections 11 The circuit board 13 to which the terminal 11b is connected is fixed to the opening of the mounting member 14 in a state in which the movement toward the opening is prevented by being fitted to the bottom surface 14a side of the portion 16, and the inside of the recess 15 It is fixed to.

  According to the motor mounting structure configured as described above, the motor 10 is inserted into the recess 15 of the mounting member 14, and the protrusion 11 formed on the outer peripheral surface of the case 10 a is formed on the inner peripheral surface of the recess 15. By being positioned closer to the bottom surface 14 a than the locking portion 16, the locking portion 16 can prevent the motor 10 from moving to the opening side of the mounting member 14.

  Moreover, since the protrusions 11 and the locking portions 16 are provided at a plurality of locations spaced in the circumferential direction, the motor 10 can be stably held in the recess 15. As a result, the motor 10 can be easily and securely attached to the attachment member 14 without requiring additional fixing parts.

  In addition, since the locking portion 16 on the inner peripheral surface of the mounting member 14 is formed in a tapered shape in which the height dimension gradually increases from the opening side toward the bottom surface 14a side, the motor 10 is mounted on the mounting member 14. When the protrusion 11 is inserted into the recess 15, the protrusion 11 on the outer peripheral surface is pushed along the upper surface of the locking portion 16, thereby easily deforming the protrusion 11 while elastically deforming the protrusion 11 and the locking portion 16. The locking portion 16 can be fitted to the bottom surface 14a side.

FIG. 3 shows another embodiment of the motor mounting structure according to the present invention. The same components as those shown in FIG. 1 and FIG. Turn into.
As shown in FIG. 3, in this motor mounting structure, wall portions (second locking portions) projecting from the inner peripheral surface on the inner peripheral surface of the recess 15 and on both sides in the circumferential direction of the protrusion 11 are provided. ) 20 is formed.

  Accordingly, the motor 10 is moved in the circumferential direction (rotation around the axis) by the wall portion 20 in a state where the motor 10 is inserted into the recess 15 and the protrusion 11 is fitted to the bottom surface 14a side of the locking portion 16. Is blocked and installed.

Therefore, according to the motor mounting structure having the above-described configuration, in addition to being able to obtain the same effects as those shown in FIGS. 1 and 2, the protrusion 11 is further formed on the inner peripheral surface of the recess 15. to be positioned on both sides to form a wall portion 20 for preventing circumferential movement, the engagement of Installing projection 11 motor 10 is rotated around an axis after attaching and locking portion 16 is disengaged This can be surely prevented.

DESCRIPTION OF SYMBOLS 10 Motor 10a Case 11 Protrusion part 14 Mounting member 14a Bottom face 15 Recess 16 Locking part 20 Wall part (2nd locking part)

Claims (3)

The recess having a bottom surface of the mounting member made of synthetic resin have a structure for mounting a motor,
The outer peripheral surface of the motor case, provided at a plurality of positions of projecting portions projecting outwardly spaced in the circumferential direction of the outer peripheral surface Rutotomoni, a inner circumferential surface of the recess than the protruding portions At the position where the front end surface of the motor is in contact with the bottom surface of the concave portion on the opening side of the concave portion, the motor moves to the opening side of the motor between the bottom surface and the protrusion. An attachment structure for a motor, wherein a blocking portion for blocking is formed.   2. The motor mounting structure according to claim 1, wherein the locking portion is formed in a tapered shape whose height dimension gradually increases from the opening side toward the bottom surface side.   The inner peripheral surface of the concave portion is formed with a second locking portion that protrudes on both sides of the protruding portion in the circumferential direction to lock the movement of the protruding portion in the circumferential direction. The motor mounting structure according to claim 2.

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