JP5658914B2 - Motor type actuator and valve device actuator - Google Patents

Description

  The present invention relates to a motor-type actuator and an actuator for a valve device, and more particularly to a motor-type actuator suitable for being used for opening / closing control of an electric valve or the like that controls the flow and flow rate of a fluid.

2. Description of the Related Art Conventionally, an electric valve that opens and closes a valve using a motor has been widely used for flow control of refrigerant in air-conditioning equipment and flow control of combustion gas, air, hot water, liquid fuel, etc. in baths and showers. The motor actuator used for opening and closing the electric valve (valve device), have been proposed various ones, as an example, the motor actuator 50 shown in FIG. 1 4 are known. In the motor type actuator 50, a gear train 53 accommodated in the lower housing 51B is disposed below the motor 52 accommodated in the upper housing 51A, and the rotation of the motor 52 is transmitted to the gear train 53 to transmit the gear train 53. Is configured to rotate a valve body (not shown).

  The motor type actuator 50 has a first printed circuit board 54 attached to the motor 52 and a second printed circuit board 55 attached to the upper housing 51 </ b> A as connection boards for electrical connection. The substrates 54 and 55 are connected to each other. A plurality of connection terminals 52a protruding from the motor 52 are connected to the first printed circuit board 54, and the second printed circuit board 55 detects the magnetism of the magnet 53b embedded in the gear 53a and rotates the gear 53a. A sensor 57 that detects the amount and rotation angle is connected to a plurality of external connection terminals 59 that are inserted in the connector connection portion 58. The connector connecting portion 58 is connected to an external connector (not shown) from an external power source or control device.

As another example of a conventional motor actuator, for example, Patent Document 1 proposes an apparatus using a flexible flexible deformable substrate as a connection substrate for electrical connection. In this motor type actuator 60, as shown in FIG. 15 , a flexible board 61 bent in a substantially L shape is attached to the upper housing 51 </ b> A, and a connection terminal 52 a of the motor 52 is connected to one end of the flexible board 61. The Further, the sensor 57 and the external connection terminal 59 are connected to the other end portion of the flexible substrate 61, and a fixing reinforcing plate 62 is attached.

Japanese Patent No. 3394407

In assembling the motor actuator 50 shown in FIG. 1. 4, it was turned upside down of the upper housing 51A, in this state, the motor support plate 71 is fixed to the rear surface, a first printed circuit board 54 is mounted on the side surface The motor 52 is attached to the inside of the upper housing 51A. Next, the base 72 on which the support shaft 73 and the fixed bearing 74 are fixed or formed, and the substrate 55 on which the sensor 57 is mounted are sequentially attached, the lead wire 56 extending from the first printed circuit board 54, and the connector connecting portion 58. The external connection terminal 59 is soldered to the second printed circuit board 55. Next, each gear constituting the gear train 53 is mounted on the support shaft 73 of the base 72, and finally, the lower housing 51B is attached to the upper housing 51A so as to cover the gear train 53.

Further, even if hit in the assembly of the motor actuator 60 shown in FIG. 1 5, first, the motor supporting plate 71 is soldered to one end portion of the connecting terminal 52a and the flexible substrate 61 of the motor 52 fixed integrally on the rear surface, Thereafter, the other end of the flexible substrate 61 is attached to the upper housing 51 </ b> A through the reinforcing plate 62. Thereafter, assembly is performed in the same manner as in the case of the motor type actuator 50.

As described above, both of the motor type actuators 50 and 60 are attached in order from the motor 52. At that time, if the motor 52 is not accommodated in a correctly positioned state, or the motor 52 is accurately even positioned, if there is such positional deviation of the connection terminals 52a being drawn from the motor 52, shift the relative position of the connecting terminals 52a for external connection terminals 59 (Fig. 1 4, in the plane of FIG. 1 5 Shift in the vertical direction). For this reason, it is necessary to absorb the deviation using the lead wire 56 and the flexible substrate 61. As a result, the structure of the actuator is complicated.

  Therefore, the present invention has been made in view of the above-described problems in the prior art, and a motor capable of reducing the load on terminals and soldered portions with a simple structure and preventing them from being damaged. It is an object to provide an actuator or the like.

In order to achieve the above object, the present invention has a housing body and a cover, and a motor, a gear train and an output gear are attached to the housing body, and the rotation of the output shaft of the motor is transmitted to the gear train to output the output. A motor-type actuator for rotating a gear, wherein an external connection terminal for supplying electric power to the motor from the outside, a motor side connection terminal protruding from the motor body and connected to the external connection terminal, and the motor after adjusting the relative position of the external connection terminal and the motor side connection terminal of the motor main body is rotated to the output axis, and a motor fixing part for fixing the motor body, the motor fixing part A protrusion projecting horizontally from the motor body, a positioning tooth having a plurality of serrated teeth at the tip of the protrusion, and the housing body And a convex portion which is erected, characterized that you fix the projection and convex portions by bonding or engaged with the convex portion to between any two adjacent teeth of the positioning teeth .

And according to the present invention, the motor can be fixed after adjusting the relative position of the connection terminal and the external connection terminal in mounting the motor, so that the load on various terminals and soldering points is removed. A motor can be attached, and it is possible to prevent damage to terminals and soldered portions. A positioning tooth having a plurality of serrated teeth at the tip of the protrusion; and a convex portion erected on the housing body, the convexity between any adjacent two teeth of the positioning tooth. By joining or meshing the portions, the projecting portion and the convex portion can be fixed, and the rotation angle of the motor body can be appropriately fixed with a simple configuration.

In addition, the present invention has a housing main body and a cover, and a motor, a gear train, and an output gear are attached to the housing main body, and rotation of the output shaft of the motor is transmitted to the gear train to rotate the output gear. a formula actuator, and an external connection terminal for supplying power to the motor from the outside, and a motor-side connection terminals projecting from the motor body, and the first substrate to which the motor side connection terminal is connected, one end together but are connected to the first substrate, and the internal connection terminal to which the other end is connected to the external connecting terminals, before Symbol motors body the internal connection terminals by turning on the output axis of the motor after adjusting the relative position of the external connection terminals, and a motor fixing part for fixing the motor body, the motor fixing portion projecting projecting horizontally from the motor body A positioning tooth having a plurality of serrated teeth at the tip of the projecting portion, and a convex portion erected on the housing body, and between the two adjacent teeth of the positioning tooth by joining or meshing projections you characterized by fixing the projecting portion and the convex portion.

And according to the present invention, the motor can be fixed after adjusting the relative positions of the internal connection terminal and the external connection terminal in mounting the motor, so that the load on various terminals and soldering points is removed. Thus, it is possible to attach a motor, and it is possible to prevent damage to terminals and soldered portions. Further, by forming serrated positioning teeth at the tip of the projecting portion and joining or meshing the projecting portion between any two adjacent teeth of the positioning tooth, the projecting portion and the projecting portion can be fixed. can, according to this, with a simple configuration, it is possible to adequately fix the rotation angle of the motor body.

  The motor-type actuator may include a motor support plate mounted on the back surface of the motor body, and the protrusion may be provided on the motor support plate.

  In the motor-type actuator, the motor body is formed on the housing body and a base on which the motor having the protrusion provided on the motor body or a motor on which the motor support plate is mounted on the back surface of the motor body is placed. A holding table on which the base is placed, and the convex portion is formed on the holding table, and an attachment hole through which the convex portion of the holding table is inserted can be formed in the base. According to this, it becomes possible to perform both positioning and fixing of the base and fixing of the rotation angle of the motor body using the convex part of the housing body.

  In the motor-type actuator, a pressing portion that presses the protruding portion toward the housing main body can be provided inside the cover. According to this, the motor can be firmly fixed.

  In the motor-type actuator, the external connection terminal can be inserted into a connector connection portion for connecting an external connector.

  In the motor-type actuator, the second substrate is disposed in a state parallel to the upper surface of the output gear, and a sensor for detecting a rotation state of the output gear is mounted on a surface facing the upper surface of the output gear. The second substrate can be attached to the housing body. According to this configuration, both the sensor and the output gear can be attached to the housing body side, and the alignment of the sensor is facilitated. As a result, it is possible to prevent the product-to-product variation in the positional relationship between the sensor and the detected object, and to stabilize the detection accuracy of the rotation state.

  Further, the present invention is an actuator for a valve device, which is constituted by the motor type actuator described in any of the above, and controls opening and closing of the valve by rotation of the output gear. According to the present invention, similarly to the above-described invention, it is possible to provide an actuator for a valve device that can prevent damage to a terminal and a soldered portion and can improve reliability.

  As described above, according to the present invention, it is possible to reduce the load on the terminal and the soldering portion and prevent the breakage thereof.

It is a figure which shows one Embodiment of the motor type actuator concerning this invention, (a) is a top view of the motor type actuator in the state which removed the upper housing, (b) is a motor type actuator (the whole) ( It is sectional drawing of the state cut | disconnected by the AA line of a). It is a figure which shows the upper housing of FIG. 1, (a) is a top view, (b) is an enlarged side view of the B section of (a). It is an overhead view of the lower housing of FIG. (A) is an elevation view of the motor and motor support plate of FIG. 1, and (b) is a bottom view of the motor support plate. It is a bottom view of the base of FIG. It is an enlarged view which shows the front-end | tip part of the external connection terminal of FIG. 1, (a) is a top view, (b) is a partially broken front view. It is a figure which shows the lower housing of FIG. 1, (a) is a top view, (b) is a front view, (c) is a side view, (d) is CC sectional view taken on the line of (a). It is sectional drawing of a lower housing and its mounting components in the state which removed the motor and the motor support plate. It is a top view of the 2nd printed circuit board of FIG. It is a figure which shows the assembly process of the actuator for valve apparatuses of FIG. 1, (a) is a top view, (b) is an enlarged view of the E section of (a). It is an enlarged view which shows the assembly process of the actuator for valve apparatuses of FIG. It is an enlarged view which shows the other example of the protrusion part of a motor support plate. It is an enlarged view which shows the other example of the protrusion part of a motor support plate, and the convex part of a lower housing. . It is sectional drawing which shows an example of the conventional motor type actuator. It is sectional drawing which shows the other example of the conventional motor type actuator.

  Next, an embodiment for carrying out the present invention will be described in detail with reference to the drawings. In the following description, the motor actuator according to the present invention is applied to a valve device actuator for controlling opening and closing of the valve device.

  FIG. 1 shows an embodiment of an actuator for a valve device to which a motor type actuator according to the present invention is applied. This actuator for a valve device 1 is roughly divided into a housing 2 (2A, 2B), a stepping motor (hereinafter referred to as a stepping motor). , "Motor") 3 and a gear train 4 or the like.

  The housing 2 is made of synthetic resin, and is composed of an upper housing (cover) 2A and a lower housing (housing main body) 2B formed in two.

  As shown in FIG. 2, a housing portion 10 for housing the motor 3 (see FIG. 1) is provided inside the upper housing 2 </ b> A, and stands upright from the inner lid surface 2 c so as to surround the housing portion 10. An annular wall 2d is formed. Four pressing protrusions 2f to 2i protrude from the lower surface 2e of the annular wall 2d in accordance with the positions of protrusions 20c to 20f described later. Further, a concave waterproof wall 11 is provided at the lower end of the upper housing 2A over the entire circumference, and a plurality of snap fit portions 12 having locking holes 12a on the side surface on the long side of the upper housing 2A, An attachment portion 13 for attaching a valve device (not shown) is provided.

  As shown in FIG. 3, a housing portion 14 for housing the gear train 4 and the like is provided inside the lower housing 2B, and the upper housing is provided at the upper end of the lower housing 2B over the entire circumference. The convex waterproof wall 15 which engages with the concave waterproof wall 11 (see FIG. 2) formed over the entire circumference of 2A is formed. Further, a plurality of locking claws 16 for locking the snap fit portion 12 of the upper housing 2A and a mounting portion 17 for mounting a valve device (not shown) are provided on the longitudinal side surface of the lower housing 2B. Provided.

  As shown in FIG. 1B, a motor support plate 20 is attached to the upper portion of the lower housing 2B together with a base 21, and a motor body 3d (FIG. 4) and a motor body are mounted on the upper surface of the motor support plate 20. A motor 3 having a plurality of connection terminals 3a projecting horizontally from 3d and an output shaft 3b projecting downward is attached.

  The connection terminal 3a of the motor 3 is connected to the lower part of the first printed circuit board 5 arranged orthogonal to the connection terminal 3a, and a plurality of first internal connection terminals extending in the horizontal direction are formed on the upper part of the first printed circuit board 5. One end of 22 is connected. The other end of the first internal connection terminal 22 is connected to the upper end of an external connection terminal 36 to be described later. In addition, the 1st printed circuit board 5 is comprised by the flat rigid board | substrate.

  Here, the height of the first internal connection terminal 22 is such that when the motor support plate 20 with the motor 3 attached is placed on the upper portion of the lower housing 2B, the first internal connection terminal 22 is the external connection terminal. The height is set so as to be positioned at the upper end of 36.

  As shown in FIGS. 4A and 4B, the motor support plate 20 mounted on the back surface of the motor body 3d includes a support plate body 20a formed substantially in the same shape as the back surface of the motor body 3d, and the support plate body. Projection portions 20c to 20f that are formed integrally with 20a and project in the horizontal direction.

  A through hole 20b through which the output shaft 3b of the motor 3 is inserted is formed in the center of the support plate main body 20a, and the columnar convex portion 3c protruding downward from the back surface of the motor main body 3d. Is inserted. The motor support plate 20 is fixed to the back surface of the motor body 3d by welding, caulking, or the like.

  The protrusions 20c to 20f are arranged on the outer periphery of the support plate main body 20a at a predetermined interval. As shown in FIG. 4 (b), each of the tip portions 20g to 20j is a side peripheral surface of the motor main body 3d. And an arc having substantially the same curvature. Moreover, sawtooth-shaped positioning teeth 20k and 20m are formed at the tip portions 20i and 20j of the protrusions 20e and 20f located on the opposite side of the connection terminal 3a among the protrusions 20c to 20f.

  As shown in FIG. 5, the base 21 on which the motor support plate 20 is placed has a through hole 21a through which the output shaft 3b of the motor 3 is inserted, and mounting holes 21b to 21b for fixing the base 21 to the lower housing 2B. 21d, a fixed bearing 21e formed on the lower surface 21f of the base 21 and protruding downward (see FIG. 1B), and rod-shaped fixed shafts 29, 30 fixed to the lower surface 21f of the base 21 and extending downward (see FIG. 1). 1 (b)). Further, a projection 21m for temporarily positioning the second printed circuit board 6 is implanted on the lower surface 21f of the base 21 as described later.

  Returning to FIG. 1, the gear train 4 is accommodated in the lower housing 2 </ b> B using a gap between the bottom surface of the lower housing 2 </ b> B and the lower surface 21 f of the base 21. The first gear 23 is mounted on the output shaft 3b, and the second gear 24 to the sixth gear 28 are included.

  The second gear 24 meshed with the first gear 23 and the third gear (pinion) 25 are integrally formed, and are rotatable on a fixed shaft 29 (see FIG. 5) whose upper end is fixed to the base 21. Is pivotally supported. In addition, the fourth gear 26 and the fifth gear (pinion) 27 that mesh with the third gear 25 are integrally formed and fixed to the fixed shaft 30 (see FIG. 5) whose upper end is fixed to the base 21. It is pivotally supported. Furthermore, a sixth gear 28 (output gear) that meshes with the fifth gear 27 is rotatably supported by a fixed bearing 21e formed on the base 21. The sixth gear 28 includes a magnet 8 (detected body). ) Is buried. A valve body of a valve device (not shown) is inserted and connected into the sixth gear 28, and the rotation angle (position) of the valve body is detected by a sensor 7 described later.

  The lower ends of the fixed shafts 29 and 30 are inserted into the recesses 31 and 32 (see FIG. 7A) formed at the bottom of the lower housing 2B, and the lower portion of the sixth gear 28 is It is inserted into a cylindrical portion 33 (see FIG. 7A) formed at the bottom of the side housing 2B.

  Further, as shown in FIG. 1B, a connector connecting portion 35 for connecting an external power source or an external connector (not shown) from the control device to the upper part of the short side surface of the lower housing 2B. Is formed integrally with the lower housing 2B. The connector connecting portion 35 is formed so as to open downward, and the majority (more than half of the connecting portion 35) is located above the upper end of the lower housing 2B.

  A plurality of external connection terminals 36 extending upward are inserted into the lid portion (end portion opposite to the opening) of the connector connection portion 35. These external connection terminals 36 are arranged so that their upper ends are located in the upper housing 2A, and as shown in FIG. 6, linear terminal grooves 36a that divide the end portions into two are formed in the upper ends. Is done.

  The reason why the upper end portion of the external connection terminal 36 is positioned in the upper housing 2A and the connector connection portion 35 is opened downward is that condensation occurs above the valve device actuator 1 and water is formed on the upper surface of the upper housing 2A. This is to prevent water from entering the inside of the valve device actuator 1 when it is dropped.

  As shown in FIG. 7, a plurality of holding bases 38 to 43 for holding the motor 3, the motor support plate 20, and the base 21 are formed integrally with the lower housing 2B on the inner surface of the lower housing 2B. . Of these, convex portions 38a to 40a for joining the motor support plate 20 and the base 21 to the lower housing 2B are formed on the upper surfaces of the holding bases 38 to 40. A method for joining the motor support plate 20 and the base 21 to the lower housing 2B will be described in detail later.

  Further, as shown in FIGS. 7A and 7D, a pair of board holding bases 45 and 46 for holding the second printed circuit board 6 is provided between the holding bases 38 and 39 and the lower housing 2B. It is integrally formed. These substrate holding bases 45 and 46 are formed so as to be lower than the holding bases 38 and 39, and convex portions 45a and 46a for fixing the second printed circuit board 6 to the lower housing 2B are formed on the respective upper surfaces. It is formed.

  As shown in FIG. 8, the second printed circuit board 6 is disposed in parallel with the upper surface of the sixth gear 28, and the sensor 7 is attached to the lower surface thereof. As shown in FIG. 9, the second printed board 6 has mounting holes 6 a through which the convex portions 45 a and 46 a (see FIG. 7D) of the board holding bases 45 and 46 are inserted, and the second printed board 6. A small hole 6b into which the protrusion 21m (see FIG. 5) of the lower surface 21f of the base 21 is inserted at the time of temporary positioning is formed. In FIG. 9, illustration of pattern wirings formed on the front and back surfaces of the second printed circuit board 6 and connection holes for inserting and connecting lead wires is omitted.

  Further, as shown in FIG. 8, the second printed circuit board 6 is bent at a substantially right angle and is connected to a second internal connection terminal 47 for connecting the second printed circuit board 6 to the external connection terminal 36. The long shaft portion 47 a of the second internal connection terminal 47 is orthogonal to the second printed circuit board 6, while the short shaft portion 47 b is orthogonal to the external connection terminal 36.

  The length L of the long shaft portion 47a (the length from the upper surface of the second printed circuit board 6 to the short shaft portion 47b) is the same as that of the lower housing 2B of the second printed circuit board 6 with the second internal connection terminal 47 connected thereto. Is set to such a length that the short shaft portion 47 b of the second internal connection terminal 47 is positioned at the upper end portion of the external connection terminal 36. Further, in order to facilitate the soldering operation, the short shaft portion 47b is positioned at substantially the same height as the first internal connection terminal 22 (see FIG. 1B) connected to the first printed circuit board 5. Formed as follows. Note that the second printed circuit board 6 is configured by a flat rigid board.

  The sensor 7 is provided for detecting the rotation amount and rotation angle of the sixth gear 28, and is configured by a magnetic detection element such as a Hall IC. The sensor 7 is disposed to face the magnetic pole forming surface of the magnet 8 of the sixth gear 28 and detects the magnetism of the magnet 8 (change in the magnetic field below the sensor 7).

  Next, a method for assembling the valve device actuator 1 having the above-described configuration will be described with reference to FIGS.

  The motor support plate 20 is attached to the back surface of the motor 3 in advance, and the first gear 23 is attached to the output shaft 3 b of the motor 3 in advance. Further, the first internal connection terminal 22 is attached to the first printed circuit board 5, and then the first printed circuit board 5 is connected to the connection terminal 3 a of the motor 3. Further, the sensor 7 is attached to the second printed board 6 and the second internal connection terminal 47 is connected.

  When assembling, first, the base 21 (see FIG. 5) to which the upper ends of the fixed shafts 29 and 30 are fixed is turned over so that the lower surface 21f of the base 21 faces upward. In this state, the second printed circuit board 6 in which the sensor 7 and the second internal connection terminal 47 are attached is placed at a predetermined position on the lower surface 21 f of the base 21. This placement (temporary positioning) is performed such that the two protrusions 21m planted on the lower surface 21f of the base 21 are inserted into the two small holes 6b (see FIG. 9) provided in the second printed circuit board 6.

  Next, the second to sixth gears 24 to 28 are placed in order, and then the lower housing 2 </ b> B is covered so as to cover the second to sixth gears 24 to 28. At this time, the tips of the convex portions 45a and 46a of the board holding bases 45 and 46 are inserted into two mounting holes 6a (see FIG. 9) provided in the second printed board 6. Further, when covering the lower housing 2B, the lower ends of the fixed shafts 29 and 30 are inserted into the recesses 31 and 32 (see FIG. 7A) formed in the bottom of the lower housing 2B, and the sixth gear 28 The lower part is inserted into a cylindrical part 33 (see FIG. 7A) formed at the bottom of the lower housing 2B. Further, convex portions 38a to 40a (see FIG. 7A) formed on the holding bases 38 to 40 of the lower housing 2B are inserted into mounting holes 21b to 21d (see FIG. 5) drilled in the base 21, The base 21 and the lower housing 2B are positioned.

  The structure 21 assembled as described above is inverted again so that the base 21 is positioned on the upper side. By this reversal, the second printed circuit board 6 falls onto the substrate holding bases 45 and 46 while the convex portions 45a and 46a are inserted into the mounting holes 6a, thereby positioning the second printed circuit board 6. Is done.

  At the same time, the end of the short shaft portion 47b (see FIG. 8) of the second internal connection terminal 47 is inserted into the terminal groove 36a (see FIG. 6) of the external connection terminal 36. Thereafter, the second printed circuit board 6 is caulked by crushing the tips of the convex portions 45a and 46a, and the second printed circuit board 6 is fixed to the lower housing 2B.

  Next, the motor 3 in a state where the motor support plate 20 is mounted is fitted into the base 21 while the columnar convex portion 3c (see FIG. 4A) of the motor 3 is fitted into the through hole 21a (see FIG. 5) of the base 21. As shown in FIG. 10B, the protruding portion 20e of the motor support plate 20 is brought into contact with or close to the convex portion 40a of the lower housing 2B. At the same time when the motor 3 is placed on the base 21, the end of the first internal connection terminal 22 (see FIG. 1B) extending from the first printed circuit board 5 is connected to the terminal groove 36 a of the external connection terminal 36. (See FIG. 6).

  Then, as shown in FIG. 10A, the motor body 3d is rotated around the output shaft 3b (in the direction of arrow D) to adjust the position of the first internal connection terminal 22, and the first internal connection terminal 22 and the external The load applied to the terminal groove 36a of the connection terminal 36 is removed.

  Thereafter, the tips of the convex portions 38a to 40a of the lower housing 2B are crushed by melting or the like, and the base 21 is caulked by the convex portions 38a to 40a. At this time, the convex portion 40a of the lower housing 2B is welded to the positioning teeth 20k of the protruding portion 20e, and the resin is molded into a tooth shape, whereby the rotation angle of the motor main body 3d (the position of the first internal connection terminal 22). ).

  The protruding portion 20f of the motor support plate 20 is provided with positioning teeth 20m despite the fact that there is no projecting convex portion, but this is because the motor support plate 20 is mounted on the back surface of the motor body 3d. Considering workability when doing. That is, by providing the positioning teeth 20k and 20m on both the left and right (up and down on the paper surface of FIG. 10 (a)) positioning teeth 20k and 20m, the planar shape of the motor support plate 20 is made symmetrical to the motor body 3d. At the time of attachment, it is made unnecessary to be aware of the front and back of the motor support plate 20.

  When the mounting of the motor 3, the motor support plate 20 and the base 21 is completed, the first internal connection terminal 22 and the external connection terminal 36 of the first printed circuit board 5 are soldered, and the second internal structure of the second printed circuit board 6 is used. The connection terminal 47 and the external connection terminal 36 are soldered. At this time, since the heights of the first and second internal connection terminals 22 and 47 are the same and the soldering portions are arranged in a horizontal line, the soldering is easy to perform, and the operation can be performed promptly. The soldering may be performed manually or mechanically.

  Next, the upper housing 2A is covered, and as shown in FIG. 11, the pressing protrusions 2f to 2i (see FIG. 2A) of the annular wall 2d provided on the inner side of the upper housing 2A are attached to the protrusions 20c of the motor support plate 20. It is made to contact | abut on the upper surface of -20f. Finally, the snap-fit portion 12 (see FIG. 2) of the upper housing 2A is locked to the locking claws 16 of the lower housing 2B, thereby pressing the motor support plate 20 downward and the upper housing 2A and the lower housing 2A. The side housing 2B is joined. Further, when the upper and lower housings 2A and 2B are joined, the concave waterproof wall 11 of the upper housing 2A is brought into close contact with the outer side of the convex waterproof wall of the lower housing 2B, whereby the waterproof performance of the valve device actuator 1 is achieved. Is increased.

  As described above, according to the present embodiment, the protruding portion 20e having the positioning teeth 20k formed at the tip portion is provided on the motor support plate 20, and the positioning teeth 20k and the convex portions 40a erected on the lower housing 2B. Since the rotation angle of the motor body 3d is fixed by joining the motor body 3d, the motor body 3d is rotated around the output shaft 3b to attach the first internal connection terminal 22 and the external connection terminal 36. After adjusting the relative position, the motor 3 can be fixed. For this reason, it is possible to prevent an excessive load from being applied to various terminals and soldering locations, and to prevent damage to the terminals and soldering locations.

  Further, since the annular wall 2d and the pressing protrusions 2f to 2i are formed inside the upper housing 2A, and the protrusions 20c to 20f of the motor support plate 20 are pressed downward by the protrusions 2f to 2i, the pressing protrusion 2f The motor support plate 20 can be clamped (pressed in the vertical direction) by ˜2i and the base 21, and the motor 3 can be firmly fixed. Thus, since the motor support plate 20 is clamped by the presser protrusion and the base, the welding of the convex portion 40a to the positioning tooth 20k is intended to position the motor support plate 20 only in the rotational direction. Also good.

  Further, as shown in FIG. 8, the second internal connection terminal 47 connected to the second printed circuit board 6 is bent and formed so that the long shaft portion 47a and the short shaft portion 47b intersect at a substantially right angle. The lower space 48 of the terminal 47 can be widened. Accordingly, the connector connecting portion 35 can be disposed upward, and the vertical width W of the lower space 49 of the connector connecting portion 35 can be increased. For this reason, it is possible to easily insert the external connector even when the connector connecting portion 35 is opened downward.

  Further, since the second printed circuit board 6 with the sensor 7 mounted is attached to the lower housing 2B, both the sensor 7 and the sixth gear 28 can be attached to the lower housing 2B side. Positioning with the upper magnet 8 becomes easy. As a result, it is possible to prevent variation between products in the positional relationship between the two and to stabilize the detection accuracy of the rotation state.

Further, in the above embodiment, by fusing the protrusion 40a of the lower housing 2B the positioning teeth 20k, but fixes the rotation angle of the motor body 3d, as shown in FIG. 1 2, the convex portion 40a The positioning angle 20k may be engaged with each other to fix the rotation angle of the motor body 3d. In this case, it is not always necessary to weld the convex portion 40a to the positioning tooth 20k.

Furthermore, as shown in FIG. 1 3, to form the positioning teeth 20k of the protrusion 20e at an acute angle shape, a convex portion 40a of the lower housing 2B is formed on the top view rhombus shape and configured to mesh with both You can also.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to those structures, A various change is possible within the range of the invention described in the claim.

  For example, although the case where the motor type actuator according to the present invention is applied to an actuator for a valve device has been illustrated in the above embodiment, the present invention can be widely applied to other actuators.

  The connection terminal 3 a of the motor 3 and the upper end of the external connection terminal 36 are connected via the first printed circuit board 5 and the first internal connection terminal 22, but the first printed circuit board 5 and the first internal connection terminal 22 are connected. The connection terminal 3a of the motor 3 may be directly connected to the external connection terminal 36. In this case, when the motor 3 is attached, the position of the connection terminal 3a is adjusted by rotating the motor body 3d.

  Furthermore, although the motor support plate 20 and the base 21 are configured as separate bodies and are arranged so as to overlap each other, they can be integrally formed. In this case, the protrusions 20c to 20f may be provided on the lower side surface of the motor body 3d.

  Moreover, although the three convex parts 38a-40a are provided in the lower housing 2B, four convex parts may be provided and the convex parts may be welded to both of the projecting parts 20e and 20f. In addition, the number of convex parts is not restricted to 3 or 4, It can also be 1 or 2 or 5 or more. Naturally, the number of the protrusions 20c to 20f is not limited to four, and may be 1 to 3, or 5 or more.

  Furthermore, pressing protrusions 2f to 2i are provided on the annular wall 2d of the upper housing 2A, and these pressing protrusions 2f to 2i are brought into contact with the upper surfaces of the protruding portions 20c to 20f of the motor support plate 20, but the pressing protrusions 2f to 2i are It may be omitted and the lower surface 2e of the annular wall 2d may be brought into contact with the protruding portions 20c to 20f.

  Moreover, although the magnetic sensor was illustrated as the sensor 7, if the rotation state of the gear train 4 can be detected, another sensor can also be used.

1 Actuator for valve device 2 Housing 2A Upper housing (cover)
2c Inner lid surface 2d Annular wall 2e Lower surface 2f to 2i Holding projection 2B Lower housing (housing main body)
DESCRIPTION OF SYMBOLS 3 Motor 3a Connection terminal 3b Output shaft 3c Cylindrical convex part 3d Motor main body 4 Gear train 5 1st printed circuit board 6 2nd printed circuit board 6a Mounting hole 6b Small hole 7 Sensor 8 Magnet 10 Housing part 11 Concave waterproof wall 12 Snap fitting part 12a Locking hole 13 Mounting part 14 Housing part 15 Convex waterproof wall 16 Locking claw 17 Mounting part 20 Motor support plate 20a Supporting plate body 20b Through hole 20c-20f Protrusion part 20g-20j Tip part 20k, 20m Positioning tooth 21 Base 21a Through hole 21b to 21d Mounting hole 21e Fixed bearing 21f Lower surface 21m Projection 22 First internal connection terminal 23 First gear 24 Second gear 25 Third gear 26 Fourth gear 27 Fifth gear 28 Sixth gear 29, 30 Fixed shaft 31, 32 Concave portion 33 Tubular portion 35 Connector connection portion 36 External connection terminal 36a Terminal grooves 38-43 Holding bases 38a-4 a convex portion 45, 46 substrate holder 45a, the lower space of the lower space 49 connector connection portion 46a projecting portion 47 second internal connecting terminal 48 second internal connecting terminal

Claims (8)

A motor-type actuator having a housing body and a cover, attaching a motor, a gear train and an output gear to the housing body, and transmitting the rotation of the output shaft of the motor to the gear train to rotate the output gear;
An external connection terminal for supplying electric power to the motor from the outside;
A motor-side connection terminal protruding from the motor body and connected to the external connection terminal;
A motor fixing part for fixing the motor main body after rotating the motor main body of the motor around the output shaft and adjusting the relative position of the motor side connection terminal and the external connection terminal ;
The motor fixing portion includes a protrusion protruding in a horizontal direction from the motor main body, a positioning tooth having a plurality of serrated teeth at the tip of the protrusion, and a protrusion standing on the housing main body. comprising, a motor actuator, characterized that you fix the projection and convex portions by bonding or engaged with the convex portion to between any two adjacent teeth of the positioning teeth. A motor-type actuator having a housing body and a cover, attaching a motor, a gear train and an output gear to the housing body, and transmitting the rotation of the output shaft of the motor to the gear train to rotate the output gear;
An external connection terminal for supplying electric power to the motor from the outside;
A motor side connection terminal protruding from the motor body ;
A first substrate to which the motor side connection terminal is connected ;
An internal connection terminal having one end connected to the first substrate and the other end connected to the external connection terminal;
A motor fixing part for fixing the motor body after rotating the motor body around the output shaft to adjust the relative position of the internal connection terminal and the external connection terminal ;
The motor fixing portion includes a protrusion protruding in a horizontal direction from the motor main body, a positioning tooth having a plurality of serrated teeth at the tip of the protrusion, and a protrusion standing on the housing main body. comprising, a motor actuator, characterized that you fix the projection and convex portions by bonding or engaged with the convex portion to between any two adjacent teeth of the positioning teeth. Motorized actuator according to claim 1 or 2, wherein a motor support plate which is mounted on the rear surface of the motor body, wherein the protrusions and which are located on the motor support plate. A motor on which the protrusion is provided on the motor main body, or a base on which a motor having the motor support plate mounted on the back surface of the motor main body is mounted; and the base formed on the housing main body. claim 1 is being a holder, with the convex portion is formed on the holder, the mounting hole in which the convex portion of the holder is inserted, characterized in that it is formed in the base, The motor actuator according to 2 or 3 . The motor type actuator according to any one of claims 1 to 4 , wherein a pressing portion that presses the protruding portion toward the housing main body is provided inside the cover. The external connection terminals, the motor actuator according to any one of claims 1 to 5, characterized in that it is inserted in the connector connecting portion for connecting an external connector. A second substrate that is arranged in a state parallel to the upper surface of the output gear and on which a sensor for detecting the rotational state of the output gear is mounted on a surface facing the upper surface of the output gear;
Motorized actuator according to any one of claims 1 to 6, characterized in that said second substrate is attached to the housing body. An actuator for a valve device comprising the motor type actuator according to any one of claims 1 to 7 , wherein the opening and closing of the valve is controlled by rotation of the output gear.

Images