CN210800195U

CN210800195U - Fixing structure of actuator and actuator

Info

Publication number: CN210800195U
Application number: CN201921669834.6U
Authority: CN
Inventors: 矢岛克英; 大川高徳; 小平修
Original assignee: Nidec Sankyo Corp
Current assignee: Nidec Instruments Corp
Priority date: 2018-10-09
Filing date: 2019-10-08
Publication date: 2020-06-19
Anticipated expiration: 2029-10-08
Also published as: JP2020061840A; JP7244248B2

Abstract

A fixing structure of an actuator and an actuator are provided, which can improve the degree of freedom of the actuator and a fastening position relative to an angle position when the actuator is fixed on an installation part. A flange section (225) that protrudes radially outward is provided on the outer peripheral wall (220) of the housing (2) of the actuator (1). In a state where one surface (228) of the flange portion is in contact with a receiving portion facing the opposite output side of a mounted portion to which the actuator is mounted from the opposite output side (Lb), a fixing member (9) is overlapped with the other surface (229) of the flange portion from the opposite output side, and the flange portion (225) is fixed to the receiving portion. A plurality of flat portions (224) arranged in the circumferential direction are provided on the outer peripheral wall (220) at positions adjacent to the flange portion on the opposite side of the output side, a first support portion (96) of the fixture (9) abuts against one of the flat portions (224), and a second support portion (97) abuts against the other flat portion.

Description

Fixing structure of actuator and actuator

Technical Field

The utility model relates to a fixed knot of actuator constructs and actuator.

Background

In order to apply the actuator to various apparatuses, it is necessary to fix the actuator to an attached portion of the apparatus. Therefore, the following structure is widely used: a flange portion protruding outward in the radial direction is provided at a part of the actuator, and the flange portion is brought into contact with a receiving portion of the mounting portion and fixed by a screw. For example, patent document 1 proposes the following structure: in the linear actuator, two flange portions are projected in a direction away from each other from a housing provided with an annular portion that holds an annular surface of a connector structure, and the flange portions are fixed by holes formed in the two flange portions.

Documents of the prior art

Patent document

Patent document 1: japanese Kohyo publication 2013-526250

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

However, in the structure described in patent document 1, the angular position of the actuator around the axis when the actuator is fixed is uniquely determined by the protruding direction of the two flange portions. Therefore, when the angular position of the connector structure or the like around the axis needs to be changed in accordance with the equipment to which the actuator is attached, the projecting direction itself of the two flange portions on the actuator needs to be changed, and there is a problem that the degree of freedom with respect to the angular position is low when the actuator is fixed.

In view of the above problems, an object of the present invention is to provide a fixing structure of an actuator and an actuator, which can improve the degree of freedom of an angular position of an actuator and a fastening position when the actuator is fixed to an attached portion.

Technical scheme for solving technical problem

In order to solve the above-described technical problem, an aspect of the fixing structure of the actuator of the present invention is characterized by having: an actuator having a flange portion protruding radially outward and provided on an outer peripheral wall of a housing; a fixing member that overlaps the flange portion from one side in a state where a part of the housing abuts against a receiving portion facing the one side of an attached portion to which the actuator is attached from the one side; and a fastening member that fastens the fixture to the attached portion, the outer peripheral wall including a plurality of flat portions arranged in a circumferential direction on the one side with respect to the flange portion, the fixture including a first support portion for rotation prevention that comes into contact with a first flat portion that is one of the plurality of flat portions from a radially outer side, and a second support portion for rotation prevention that comes into contact with a second flat portion that is another flat portion of the plurality of flat portions other than the first flat portion from a radially outer side.

In the fixing structure of the actuator of the present invention, the fixing member is overlapped with the flange portion from one side in a state where a part of the housing abuts against the receiving portion of the portion to be attached to which the actuator is attached from one side, and the housing is fixed to the portion to be attached. Further, a plurality of flat surface portions arranged in the circumferential direction are provided at positions adjacent to the flange portion of the outer circumferential wall of the actuator, the first support portion of the fixing member abuts against a first flat surface portion of the plurality of flat surface portions, and the second support portion abuts against a second flat surface portion. Therefore, the angular position shift of the actuator can be prevented. Further, depending on the structure of the attached portion, etc., when it is necessary to change the angular position of the actuator and the angular position of the fastening portion of the fixing member when fixing the actuator, measures such as using the fixing member corresponding thereto may be taken, and unlike the case of fixing the flange portion provided on the housing by a screw, it is not necessary to change the angular position of the flange portion on the actuator. Therefore, when the actuator is fixed to the attached portion, the degree of freedom of the angular position of the actuator and the fastening position can be increased.

In the fixing structure of the actuator of the present invention, the following manner may be adopted: the first planar portion and the second planar portion are parallel. According to this aspect, when the flange portion is fixed by the fixing member, the angular position of the actuator can be reliably prevented from being displaced by the first support portion and the second support portion of the fixing member.

In the fixing structure of the actuator of the present invention, the following manner may be adopted: the plurality of flat portions include a plurality of pairs of two flat portions parallel to each other, and one of the two flat portions of any pair of the plurality of pairs is the first flat portion, and the other is the second flat portion. According to this aspect, even when the angular position at which the actuator is fixed to the mounting portion is changed, the actuator can be fixed using the other flat surface portions as the first flat surface portion and the second flat surface portion.

In the fixing structure of the actuator of the present invention, the following manner may be adopted: portions of the outer peripheral wall located between the plurality of flat surface portions are curved in an arc shape along the circumferential direction.

In the fixing structure of the actuator of the present invention, the following manner may be adopted: the housing includes a connector housing portion that is open to the outside in the radial direction. According to this aspect, even when the direction of the connector housing portion needs to be changed, it is possible to easily cope with this.

In the fixing structure of the actuator of the present invention, the following manner may be adopted: the actuator includes a motor disposed inside the housing and an output member driven by the motor as a drive source.

An aspect of the actuator of the present invention is characterized in that a flange portion extending radially outward is provided in a housing of an outer peripheral wall, and the outer peripheral wall is provided with a plurality of plane portions arranged in a circumferential direction at positions adjacent to the flange portion.

In the actuator of the present invention, the fixing member is overlapped with the flange portion from one side in a state where a part of the housing abuts against the receiving portion of the portion to be mounted to which the actuator is mounted from one side, and the housing is fixed to the portion to be mounted. Further, a plurality of flat surface portions arranged in the circumferential direction are provided in a position adjacent to the flange portion of the outer circumferential wall of the actuator, the first support portion of the fixing member abuts against a first flat surface portion of the plurality of flat surface portions, and the second support portion abuts against a second flat surface portion. Therefore, the angular position shift of the actuator can be prevented. Further, depending on the configuration of the attached portion, etc., when it is necessary to change the angular position of the actuator and the angular position of the fastening portion of the fixing member when fixing the actuator, measures such as using the fixing member corresponding thereto may be taken, and unlike the case where the flange portion provided to the housing is fixed by a screw, it is not necessary to change the angular position of the flange portion on the actuator. Therefore, when the actuator is fixed to the attached portion, the degree of freedom of the angular position of the actuator and the fastening position can be increased.

In the actuator of the present invention, the following manner may be adopted: the plurality of planar portions includes a pair of two planar portions parallel to each other. According to this aspect, when the flange portion is fixed by the fixing member, the angular position of the actuator can be reliably prevented from being displaced by the first support portion and the second support portion of the fixing member.

In the actuator of the present invention, the following manner may be adopted: the plurality of planar segments includes a plurality of pairs of two planar segments that are parallel to each other. According to this aspect, even when the angular position at which the actuator is fixed to the attached portion is changed, the actuator can be fixed by the other flat surface portion.

In the actuator of the present invention, the following manner may be adopted: the outer peripheral wall is a peripheral wall in which a portion between the plurality of flat surface portions is curved in an arc shape along a circumferential direction.

In the actuator of the present invention, the following manner may be adopted: the housing includes a connector housing portion that is open to the outside in the radial direction. According to this aspect, even when the direction of the connector housing portion needs to be changed, it is possible to easily cope with this.

In the actuator of the present invention, the following manner may be adopted: the electric motor is disposed inside the housing, and an output member driven by the electric motor as a drive source is provided.

(effects of utility model)

In the present invention, the fixing member is overlapped with the flange portion from one side in a state where a part of the housing abuts against the receiving portion of the portion to be attached to which the actuator is attached from one side, and the housing is fixed to the portion to be attached. Further, a plurality of flat surface portions arranged in the circumferential direction are provided at positions adjacent to the flange portion of the outer circumferential wall of the actuator, the first support portion of the fixing member abuts against a first flat surface portion of the plurality of flat surface portions, and the second support portion abuts against a second flat surface portion. Therefore, the angular position shift of the actuator can be prevented. Further, depending on the configuration of the attached portion, etc., when it is necessary to change the angular position of the actuator and the angular position of the fastening portion of the fixing member when fixing the actuator, measures such as using the fixing member corresponding thereto may be taken, and unlike the case where the flange portion provided to the housing is fixed by a screw, it is not necessary to change the angular position of the flange portion on the actuator. Therefore, when the actuator is fixed to the attached portion, the degree of freedom of the angular position of the actuator and the fastening position can be increased.

Drawings

Fig. 1 is a perspective view showing one embodiment of an actuator according to embodiment 1 of the present invention.

Fig. 2 is a cross-sectional view of the actuator shown in fig. 1.

Fig. 3 is an explanatory view showing a rotation stop structure of the fixing tool shown in fig. 1.

Fig. 4 is an explanatory view of an actuator according to modification 1 of embodiment 1 of the present invention.

Fig. 5 is an explanatory view of an actuator according to modification 2 of embodiment 1 of the present invention.

Fig. 6 is an explanatory diagram showing a rotation stop structure by the fixture in the actuator according to embodiment 2 of the present invention.

Description of the reference numerals

1 … actuator; 2 … outer shell; 5 … stator; 6 … rotor; 9 … a fastener; 10 … electric motor; 21 … motor housing; 22 … sealing member; 23 … connector housing portion; 55 … terminal pins; 61 … rotating shaft; 62 … permanent magnet; 71 … output member; 96 … first support; 97 … second support portion; 99 … fastening means; 100 … valve device; 110 … mounted part; 112 … bolster; 150 … partition wall; 155 … a communication hole; 160 … a first flow path; 170 … second flow path; 220 … outer peripheral wall; 221 … first outer peripheral portion; 222 … a second outer peripheral portion; 224 … planar portion; 224a … first planar portion; 224b … second planar portion; 225 … flange portion; 228 … on one side; 229 … on the other side; g … fluid; l … axis

Detailed Description

Embodiments of the present invention will be described with reference to the drawings. In the following description, L is given on the axis of the actuator 1, and a side of the rotary shaft 61 protruding from the motor housing 21 in the direction of the axis L is referred to as an output side La, and a side opposite to the output side La is referred to as an opposite output side Lb. In the present invention, description will be given mainly on the case where "one side" is the opposite output side Lb when the actuator 1 is fixed.

[ embodiment 1]

(integral construction of actuator 1)

Fig. 1 is a perspective view showing one embodiment of an actuator 1 according to embodiment 1 of the present invention.

Fig. 2 is a sectional view of the actuator 1 shown in fig. 1.

The actuator 1 shown in fig. 1 and 2 includes a motor housing 21 and a seal member 22 disposed on the opposite output side Lb of the motor housing 21 to constitute a housing 2.

As shown in fig. 2, the actuator 1 includes a motor 10 disposed inside the housing 2, and an output member 71 driven by the motor 10 as a drive source, such as rotation or linear drive. In the present embodiment, the actuator 1 is a linear actuator in which the motor 10 is used as a drive source and the output member 71 is linearly driven. The motor 10 includes a cylindrical stator 5 inside a motor housing 21 in a casing 2, and a rotor 6 inside the stator 5.

The stator 5 includes a stator core 52. In the present embodiment, a lid 54 that closes the opening on the opposite output side Lb of the motor case 21 is integrally formed when forming the bobbin 53 of the wound coil 51. The rotor 6 includes a rotary shaft 61 and a permanent magnet 62 fixed to an outer peripheral surface of the rotary shaft 61, and a part of the rotary shaft 61 protrudes from the motor housing 21 to the output side La.

The end of the rotating shaft 61 on the opposite output side Lb is supported by the steel ball 66 and the radial bearing 67, and the steel ball 66 and the radial bearing 67 are supported by the lid 54. The rotary shaft 61 is also rotatably supported by a radial bearing 68 held at an end of the output side La of the motor housing 21.

A male screw 610 is formed on a portion of the rotary shaft 61 protruding from the motor housing 21 toward the output side La, and the female screw 710 of the output member 71 is engaged with the male screw 610. Since the output member 71 is used for a valve device which will be described later, a conical surface is formed at the end of the output side La. A groove-shaped recess 711 opening toward the opposite output side Lb is formed in the output member 71, and a stopper 72 fixed to an end portion of the motor case 21 on the output side La is disposed inside the recess 711. When the rotary shaft 61 rotates about the axis L, the stopper 72 prevents the output member 71 from following. Therefore, when the rotary shaft 61 rotates about the axis L, the output member 71 linearly moves along the axis L. A coil spring 73 is disposed inside the recess 711. The coil spring 73 biases the output member 71 toward the output side La, thereby suppressing a gap between the male screw 610 and the female screw 710.

(Structure of case 2)

In the case 2, the sealing member 22 is made of resin, and covers a portion of the outer peripheral surface of the motor housing 21 on the opposite output side Lb to seal the gap between the motor housing 21 and the cover 54. The lid 54 supports a plurality of terminal pins 55 extending in a direction orthogonal to the axis L. One end 551 of the terminal pin 55 is covered with the cover 29, and the cover 29 is covered with the sealing member 22. The seal member 22 is formed with a cylindrical connector housing portion 23 that opens radially outward and perpendicular to the axis L, and the other end 552 of the terminal pin 55 is positioned inside the connector housing portion 23.

As shown in fig. 1 and 2, in the housing 2, the seal member 22 has an outer peripheral wall 220 which is cylindrical as a whole, and an annular flange portion 225 which projects radially outward is provided in the vicinity of the center of the outer peripheral wall 220 in the direction of the axis L. Therefore, the outer peripheral wall 220 has a first outer peripheral portion 221 adjacent to the flange portion 225 on the output side La and a second outer peripheral portion 222 adjacent to the flange portion 225 on the output-opposite side Lb.

The first outer peripheral portion 221 is formed with a plurality of semicircular projections 223 along the circumferential direction, and the projections 223 are curved in an arc shape along the circumferential direction.

The second outer peripheral portion 222 is formed with a plurality of flat surface portions 224 in the circumferential direction, and the flat surface portions 224 are curved in an arc shape in the circumferential direction.

(fixed structure)

As shown in fig. 2, the actuator 1 is used for a valve device 100 or the like in which the output member 71 is used as a valve body, because the output member 71 is driven in the direction of the axis L by the motor 10 as a drive source. Therefore, the valve device 100 includes the attached portion 110 to which the actuator 1 is attached. The valve device 100 is provided with a first flow path 160 and a second flow path 170 partitioned by a partition wall 150, and the partition wall 150 is provided with a communication hole 155 for communicating the first flow path 160 and the second flow path 170.

When the actuator 1 is fixed to the mounting portion 110, the output member 71 is disposed at a position overlapping the communication hole 155 in the second flow path 170. Therefore, as shown in fig. 2, when the output member 71 is driven to the opposite output side Lb and separated from the communication hole 155, the communication hole 155 is opened, and the fluid G flows from the first channel 160 into the second channel 170. On the other hand, when the output member 71 is driven toward the output side La to close the communication hole 155, the fluid G stops flowing from the first flow path 160 into the second flow path 170. In contrast to fig. 2, the fluid G may flow from the second channel 170 into the first channel 160 via the communication hole 155.

In the present embodiment, when the actuator 1 is mounted to the valve device 100, the portion of the actuator 1 on the output side La of the motor case 21 is inserted into the hole 111 formed in the wall-shaped mounted portion 110. A step portion is formed on the inner surface of the hole 111, and the receiving portion 112 facing the opposite output side Lb (one side) is formed as an annular surface. Therefore, when the motor housing 21 is inserted into the hole 111, a part of the housing 2 abuts against the receiving portion 112 from the opposite output side Lb. In the present embodiment, when the motor case 21 is inserted into the hole 111, the flange portion 225 of the seal member 22 has a surface 228 facing the output side La, which is a part of the housing 2, in contact with the receiving portion 112 from the opposite output side Lb.

In this state, the plate-shaped fixing element 9 is overlapped from the opposite output side Lb on the other surface 229 facing the opposite output side Lb in the flange portion 225, and the fixing element 9 is fixed to the mounting portion 110 by a fastening member 99 such as a screw. More specifically, the anchor 9 is formed with a hole 91 through which the fastening member 99 is inserted, and the attached portion 110 is formed with a screw hole 119 into which the fastening member 99 is screwed. Therefore, when the fastening member 99 is screwed into the screw hole 119 to fix the fastening member 99 to the mounting target portion 110, the flange portion 225 is fixed between the anchor 9 and the receiving portion 112. Therefore, the actuator 1 is fixed to the attached portion 110.

(rotation stopping structure of mount 9)

Fig. 3 is an explanatory diagram showing a rotation stop structure of the stator 9 shown in fig. 1, and fig. 3 shows an arrangement structure (a) formed in the plane portion 224 of the housing 2 and shows rotation stop structures (b) to (e) of the stator 9.

As shown in the arrangement structure (a) of fig. 3, in the present embodiment, a plurality of flat surface portions 224 are formed in the second outer peripheral portion 222 of the outer peripheral wall 220 of the housing 2 (the seal member 22). In the present embodiment, the plurality of flat surface portions 224 includes a plurality of pairs of two flat surface portions 224 parallel to each other. In the present embodiment, 4 flat surface portions 224 are formed at equal angular intervals in the circumferential direction. Thus, the plurality of planar segments 224 includes two pairs of planar segments 224 that are parallel to each other.

As shown in the rotation stop structure (b) of fig. 3, the fixing member 9 includes: a base portion 92 having a hole 91 through which a fastening member 99 such as a screw is inserted, an arm-shaped first support portion 96 overlapping the flange portion 225, and a second support portion 97 overlapping the flange portion 225 at a position apart from the first support portion 96 are formed.

Here, the first support portion 96 radially abuts against a first flat surface portion 224a which is any one of the plurality of flat surface portions 224 formed in the outer peripheral wall 220, and the second support portion 97 radially outwardly abuts against a second flat surface portion 224b which is one of the plurality of flat surface portions 224 formed in the outer peripheral wall 220 except for the first flat surface portion 224 a. Therefore, when the actuator 1 is fixed, the angular position deviation can be prevented.

In the present embodiment, the first support portion 96 and the second support portion 97 are parallel. Therefore, in two pairs of the planar portions 224 parallel to each other among the plurality of planar portions 224, one of the two planar portions 224 forming any one pair is the first planar portion 224a, and the other of the two planar portions 224 is the second planar portion 224 b.

As described above, in the present embodiment, as described with reference to fig. 2 and 3, in a state where the one surface 228 of the flange portion 225 is in contact with the receiving portion 112 of the attached portion 110 to which the actuator 1 is attached, the fixing member 9 is overlapped from the other surface 229 side of the flange portion 225, and the flange portion 225 is fixed to the receiving portion 112.

Further, a plurality of flat surface portions 224 arranged in the circumferential direction are provided in the outer circumferential wall 220 of the actuator 1 at positions adjacent to the flange portion 225, the first support portion 96 of the stator 9 abuts against a first flat surface portion 224a of the plurality of flat surface portions 224, and the second support portion 97 abuts against a second flat surface portion 224 b. Therefore, the angular position of the actuator 1 can be prevented from being displaced.

Further, depending on the configuration of the attached portion 110 and the like, when it is necessary to change the angular position of the actuator 1 and the angular position of the fastening portion (hole 91) of the fixing member 9 when fixing the actuator 1, measures such as using the fixing member 9 corresponding thereto may be taken, and unlike the case where the flange portion 225 provided to the housing 2 is fixed by a screw, it is not necessary to change the angular position of the flange portion 225 and the like on the actuator 1.

For example, even when the angular position of the actuator 1 is changed by 90 ° without changing the angular position of the mount 9 from the state shown in the rotation stop structure (b) of fig. 3, the other two flat surface portions 224 are brought into contact with the first support portion 96 and the second support portion 97 as the first flat surface portion 224a and the second flat surface portion 224b, thereby preventing the angular position of the actuator 1 from being displaced. Therefore, the degree of freedom of the angular position of the actuator 1 when the actuator 1 is fixed to the attached portion 110 can be improved.

Even when the position of the hole 91 needs to be changed by 90 ° from the state shown in the rotation stop structure (b) of fig. 3 as shown in the rotation stop structure (c) of fig. 3, two plane portions different from the plane portion 224 shown in the rotation stop structure (b) can be brought into contact with the first support portion 96 and the second support portion 97 as the first plane portion 224a and the second plane portion 224b, respectively, by changing the angular position of the mount 9 by 90 °, thereby preventing the angular position of the actuator 1 from being displaced. Therefore, the degree of freedom of the fastening position (hole 91) with respect to the angular position when the actuator 1 is fixed to the attached portion 110 can be improved. In the rotation stop structure (c) of fig. 3, the angular position of the actuator 1 may be changed by 90 °.

Further, even when the fixing tool 9 having the holes 91 provided in the first support portion 96 and the second support portion 97 is used because two holes 91 are required as in the rotation stop structure (d) of fig. 3, two plane portions 224 parallel to each other out of the 4 plane portions 224 can be brought into contact with the first support portion 96 and the second support portion 97 as the first plane portion 224a and the second plane portion 224b, thereby preventing the angular position of the actuator 1 from being displaced. In the rotation stop structure (d) of fig. 3, the angular position of the actuator 1 may be changed by 90 °.

Further, even if the rotation stop structure (d) of fig. 3 is changed as shown in the rotation stop structure (e) of fig. 3, and as a result, two plane portions 224 that are not parallel to each other among the 4 plane portions 224 are brought into contact with the first support portion 96 and the second support portion 97 as the first plane portion 224a and the second plane portion 224b, it is possible to prevent the angular position of the actuator 1 from being displaced. In the rotation stop structure (e) of fig. 3, the angular position of the actuator 1 can be changed by 90 °.

[ modification 1 of embodiment 1]

Fig. 4 is an explanatory diagram of the actuator 1 according to modification 1 of embodiment 1 of the present invention. Since the basic configuration of this example is the same as that of embodiment 1, the same reference numerals are given to the common portions, and the description thereof is omitted.

In embodiment 1, since 4 flat surface portions 224 are formed at equal angular intervals on the outer peripheral wall 220 of the housing 2, the plurality of flat surface portions 224 includes two pairs of flat surface portions 224 that are parallel to each other. In contrast, in the embodiment shown in fig. 4, since 8 flat surface portions 224 are formed at equal angular intervals on the outer peripheral wall 220 of the housing 2, the plurality of flat surface portions 224 includes 4 pairs of flat surface portions 224 parallel to each other. This embodiment also has the same effect as embodiment 1.

When the number of the flat surface portions 224 is too large, the portions in contact with the first support portion 96 and the second support portion 97 are narrowed. Therefore, when the flat surface portions 224 are formed at equal angular intervals, the number of the flat surface portions 224 is preferably 8 or less.

[ modification 2 of embodiment 1]

Fig. 5 is an explanatory diagram of the actuator 1 according to modification 2 of embodiment 1 of the present invention. Since the basic configuration of this example is the same as that of embodiment 1, the same reference numerals are given to the common portions, and the description thereof is omitted.

In embodiment 1, since 4 flat surface portions 224 are formed at equal angular intervals on the outer peripheral wall 220 of the housing 2, the plurality of flat surface portions 224 includes two pairs of flat surface portions 224 that are parallel to each other. In contrast, in the embodiment shown in fig. 5, 6 flat surface portions 224 are formed in the outer peripheral wall 220 of the housing 2, and the plurality of flat surface portions 224 includes three pairs of mutually parallel flat surface portions 224. Further, since the 6 flat surface portions 224 are formed at 45 ° intervals, the outer peripheral wall 220 of the housing 2 has arc-shaped portions at two positions sandwiched by the flat surface portions 224. This embodiment also has the same effect as embodiment 1.

[ embodiment 2]

Fig. 6 is an explanatory diagram showing a rotation stop structure of the stator 9 in the actuator 1 according to embodiment 2 of the present invention, and fig. 6 shows an arrangement structure (a) formed in the plane portion 224 of the housing 2 and shows rotation stop structures (b), (c) of the stator 9. Since the basic configuration of the present embodiment is the same as that of embodiment 1, the same reference numerals are given to the common portions, and the description thereof is omitted.

In embodiment 1, since 4 flat surface portions 224 are formed at equal angular intervals on the outer peripheral wall 220 of the housing 2, the plurality of flat surface portions 224 includes two pairs of flat surface portions 224 that are parallel to each other. In contrast, in the present embodiment, as shown in fig. 6, since only two flat portions 224 are formed at equal angular intervals on the outer peripheral wall 220 of the housing 2, the plurality of flat portions 224 include a pair of mutually parallel flat portions 224.

In this embodiment, as shown in the rotation stop structure (b) of fig. 6, one of the two flat surface portions 224 is a first flat surface portion 224a with which the first support portion 96 abuts, and the other of the two flat surface portions 224 is a second flat surface portion 224b with which the second support portion 97 abuts. Therefore, the angular position of the actuator 1 can be prevented from being displaced.

Further, even when it is necessary to change the position of the hole 91 by 90 ° from the state shown by the rotation stop structure (b) of fig. 6 as shown by the rotation stop structure (c) of fig. 6, the angular position of the fixing member 9 can be changed by 90 °.

[ other embodiments ]

In the above embodiment, the following structure is adopted: when the actuator 1 is fixed to the mounting portion 110, the flange portion 225 of the seal member 22 is in contact with the receiving portion 112 from the opposite output side Lb as a part of the housing 2, but a structure may be adopted in which a portion other than the flange portion 225 is in contact with the receiving portion from the opposite output side Lb, as long as a portion of the housing 2 is in contact with another receiving portion formed in the inside of the hole 111 or the like from the opposite output side Lb.

In the above embodiment, the linear actuator is exemplified as the actuator 1, but the present invention can be applied to a case where another actuator is fixed.

Claims

1. A fixing structure of an actuator, comprising:

an actuator, a flange portion of which radially outwardly protrudes being provided on an outer peripheral wall of a housing;

a fixing member that overlaps the flange portion from one side in a state where a part of the housing abuts against a receiving portion facing the one side of an attached portion to which the actuator is attached from the one side; and

a fastening member that fixes the fixing member to the attached portion,

the outer peripheral wall includes a plurality of flat surface portions arranged in the circumferential direction on the one side with respect to the flange portion,

the fixing member includes: a first support portion for rotation prevention that comes into contact with a first flat portion that is any one of the plurality of flat portions from a radially outer side; and a second support portion for rotation prevention that comes into contact with a second flat portion, which is another flat portion of the plurality of flat portions other than the first flat portion, from the outside in the radial direction.

2. The fixing structure of the actuator according to claim 1,

the first planar portion and the second planar portion are parallel.

3. The fixing structure of the actuator according to claim 2,

the plurality of flat portions include a plurality of pairs of two flat portions parallel to each other,

in the plurality of pairs, one of two planar portions forming any one pair is the first planar portion, and the other is the second planar portion.

4. The fixing structure of the actuator according to claim 1,

portions of the outer peripheral wall located between the plurality of flat surface portions are curved in an arc shape along the circumferential direction.

5. The fixing structure of the actuator according to claim 1,

the housing includes a connector housing portion that is open to the outside in the radial direction.

6. The fixing structure of the actuator according to any one of claims 1 to 5,

the actuator has: a motor disposed inside the housing; and an output member driven with the motor as a drive source.

7. An actuator, characterized in that it comprises a housing,

a housing having a flange portion extending radially outward and provided on an outer peripheral wall,

the outer peripheral wall is provided with a plurality of flat surface portions arranged in a circumferential direction at positions adjacent to the flange portion.

8. The actuator of claim 7,

the plurality of planar portions includes a pair of two planar portions parallel to each other.

9. The actuator of claim 8,

the plurality of planar segments includes a plurality of pairs of two planar segments that are parallel to each other.

10. The actuator of claim 7,

the outer peripheral wall is a peripheral wall in which a portion between the plurality of flat surface portions is curved in an arc shape along a circumferential direction.

11. The actuator of claim 7,

12. An actuator according to any of claims 7 to 11, having:

a motor disposed inside the housing; and

and an output member driven by the motor as a drive source.