Actuator

Abstract

To provide an actuator capable of changing the cable withdrawal direction to a desired direction by a user while simplifying the structure.SOLUTION: An actuator 1 includes a connector cover holding member 50 and a connector cover 60. The connector cover holding member 50 is supported on a wall surface 13 of a motor case 12 having a flat wall surface 13, and is formed to be installable at a plurality of positions on the wall surface 13. The connector cover 60 is provided with a connector connection port 61 to which a connector for supplying power or signals to a motor body 11 of a motor unit 10 is connected. The connector cover 60 is supported by the connector cover holding member 50 in a way in which an angle of an opening direction of the connector connection port 61 with respect to a first direction D1 perpendicular to the wall surface 13 is changeable.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an actuator. [Background technology]

[0002] Patent Document 1 describes an actuator with a regular hexahedral motor case. This regular hexahedral motor case has one panel with an insertion hole through which a cable drawn from the motor in the motor case is inserted, and multiple panels without holes, and is configured by combining these panels. In the actuator described in Patent Document 1, the direction in which the cable is drawn from the motor case can be changed by changing the position of the panel with the insertion hole in the regular hexahedral shape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-216069 Summary of the Invention [Problem to be solved by the invention]

[0004] Although the actuator described in Patent Document 1 allows the cable pull-out direction to be changed to a direction desired by the user, it has a large number of parts and a complex structure.

[0005] The present invention has been made in light of the above-mentioned circumstances, and has an object to provide an actuator that has a simple structure and is capable of changing the cable pull-out direction to a direction desired by the user. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention The first point of view The actuator according to the present invention comprises: The motor case is supported on a wall surface of the motor case having a flat wall surface, By rotating the movable member about a first direction perpendicular to the wall surface, On the wall In contrast, in the first direction Multiple Rotation a connector cover holding member formed so as to be able to be installed at the position; A connector port is provided to which a connector for supplying power or a signal to the motor is connected. ,before a connector cover supported by the connector cover holding member; Equipped with 、 The connector cover is supported at a plurality of rotation positions around the second direction relative to the connector cover holding member by rotating the connector cover around a second direction parallel to the wall surface, thereby allowing an angle of an opening direction of the connector connection port to be changed. .

[0008] The connector cover holding member may be supported rotatably about the first direction relative to the wall surface of the motor case.

[0009] At least one of the connector cover holding member and the wall surface may be provided with a stopper that restricts rotation of the connector cover holding member relative to the wall surface about the first direction.

[0010] The connector cover holding member may be formed so as to be capable of being held at each predetermined rotation angle around the first direction relative to the wall surface of the motor case.

[0011] A plurality of screw holes into which fasteners are screwed are formed in the wall surface of the motor case, The connector cover holding member may be formed so as to be capable of holding the connector cover at each of a predetermined rotation angle by screwing the fastener into any one of the plurality of screw holes.

[0012] A plurality of recesses are formed in one of the connector cover holding member and the wall surface, A convex portion is formed on the other of the connector cover holding member and the wall surface, The connector cover holding member may be formed so as to be capable of holding the connector cover at each predetermined rotation angle by fitting the convex portion into any one of the concave portions.

[0013] The connector cover holding member may be formed so as to be removable from the wall surface of the motor case, and may be formed so as to be attachable to the wall surface after rotating about the first direction.

[0015] The connector cover may be formed so as to be able to be held by the connector cover holding member at each of predetermined rotation angles around the second direction.

[0016] An engagement portion formed in a polygonal column shape is formed on one of the connector cover and the connector cover holding member, an engaged portion is formed on the other of the connector cover and the connector cover holding member; The connector cover may be formed so as to be capable of being held at each predetermined rotation angle by the engaging portion engaging with the engaged portion.

[0017] A cylindrical engaging portion is formed on one of the connector cover and the connector cover holding member, an engaged portion is formed on the other of the connector cover and the connector cover holding member; The connector cover may be supported rotatably around the second direction relative to the connector cover holding member by the engaging portion rotatably engaging with the engaged portion.

[0018] a positioning protrusion is formed on one of the engaging portion and the engaged portion; a positioning recess is formed on the other of the engaging portion and the engaged portion, The connector cover may be formed so as to be capable of being held at each predetermined rotation angle by fitting the positioning projection into the positioning recess.

[0019] The connector cover is formed so as to be removable from the connector cover holding member and is parallel to the wall surface. The above The connector cover may be configured to be attachable to the connector cover holding member after rotating about a second direction. In order to achieve the above object, an actuator according to a second aspect of the present invention comprises: a connector cover holding member that is supported on a wall surface of a motor case having a flat wall surface and that is configured to be installable at a plurality of positions on the wall surface; a connector cover provided with a connector connection port to which a connector for supplying power or a signal to a motor is connected, the connector cover being supported by the connector cover holding member such that an angle of an opening direction of the connector connection port with respect to a first direction perpendicular to the wall surface can be changed; Equipped with The connector cover is formed so as to be removable from the connector cover holding member, and is formed so as to be attachable to the connector cover holding member after rotating about a second direction parallel to the wall surface.

[0020] the connector cover holding member is formed in a shape having a first surface parallel to the wall surface and a second surface perpendicular to the first surface, The first surface and the second surface have an opening into which at least a part of the connector is fitted. surface It may be formed from the first surface to the second surface. In order to achieve the above object, an actuator according to a third aspect of the present invention comprises: a connector cover holding member that is supported on a wall surface of a motor case having a flat wall surface and that is configured to be installable at a plurality of positions on the wall surface; a connector cover provided with a connector connection port to which a connector for supplying power or a signal to a motor is connected, the connector cover being supported by the connector cover holding member such that an angle of an opening direction of the connector connection port with respect to a first direction perpendicular to the wall surface can be changed; Equipped with the connector cover holding member is formed in a shape having a first surface parallel to the wall surface and a second surface perpendicular to the first surface, An opening into which at least a portion of the connector is fitted is formed from the first surface to the second surface. Effect of the Invention

[0021] The actuator according to the present invention includes a connector cover holding member and a connector cover. In this actuator, the installation position of the connector cover holding member can be selected, and the opening direction of the connector connection port can be changed to a direction desired by the user by changing the angle of the opening direction of the connector connection port in the connector cover. This makes it possible to change the direction in which the cable is pulled out relative to the motor case when a connector to which a cable is attached is connected to the connector connection port. As a result, it is possible to provide an actuator that is simple in structure and capable of changing the direction in which the cable is pulled out relative to the motor case. [Brief description of the drawings]

[0022] [Figure 1] 1 is a perspective view of an actuator according to a first embodiment of the present invention. [Diagram 2]FIG. 2 is a front view of the actuator according to the first embodiment. [Diagram 3] 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 2 is an exploded perspective view of the actuator according to the first embodiment. [Diagram 5] 1A to 1C are perspective views illustrating the operation of the connector cover holding member according to the first embodiment. [Figure 6] 1A is a perspective view (part 1) of the connector cover holding member according to the first embodiment, and FIG. 1B is a perspective view (part 2) of the connector cover holding member according to the first embodiment. [Figure 7] 1A is a front view of a connector cover holding member according to embodiment 1. FIG. 1B is a cross-sectional view taken along line BB of FIG. 1A. FIG. 1C is an exploded perspective view of the connector cover holding member and the connector cover according to embodiment 1. [Figure 8] 1A to 1C are perspective views illustrating the operation of the connector cover according to the first embodiment. [Figure 9] (A) is a perspective view for explaining how the cable cover according to the first embodiment engages with the cable cover holding member, (B) is a cross-sectional view for explaining how the cable cover according to the first embodiment engages with the cable cover holding member, and (C) is a cross-sectional view for explaining a state in which the cable cover according to the first embodiment engages with the cable cover holding member. [Figure 10] FIG. 2 is a perspective view for explaining an effect of the actuator according to the first embodiment. [Figure 11] 1A to 1E are perspective views illustrating effects of the connector cover holding member and the connector cover according to the first embodiment. [Figure 12] FIG. 11 is a perspective view of an actuator according to a second embodiment of the present invention. [Figure 13] FIG. 11 is an exploded perspective view of the actuator according to the second embodiment. [Figure 14] 11 is an exploded perspective view of a connector cover holding member and a connector cover according to a second embodiment. FIG. [Figure 15] 11 is a perspective view of a connector cover holding member and a connector cover according to a second embodiment. FIG. [Figure 16] 13 is a front view of a connector cover holding member according to a second embodiment. FIG. [Figure 17] 11A to 11B are perspective views for explaining the operation of the connector cover holding member according to the second embodiment. [Figure 18] 11A to 11B are perspective views for explaining the operation of the connector cover holding member according to the second embodiment. [Figure 19] 1A is a perspective view (part 1) of a connector cover holding member according to embodiment 2. FIG. 1B is a perspective view (part 2) of a connector cover holding member according to embodiment 2. [Figure 20] 1A is a front view of a connector cover holding member according to embodiment 2. FIG. 1B is a cross-sectional view of FIG. 1A along line BB. FIG. 1C is a cross-sectional view of FIG. 1A along line CC. FIG. 1D is a partially enlarged view of FIG. 1C. [Figure 21] 13A and 13B are perspective views for explaining the operation of the connector cover according to the second embodiment. [Figure 22] 1A is a perspective view for explaining how the cable cover according to the second embodiment engages with the cable cover holding member, and FIG. 1B is a cross-sectional view for explaining how the cable cover according to the second embodiment engages with the cable cover holding member. [Diagram 23] 1A is a cross-sectional view (part 1) for explaining how the cable cover according to the second embodiment engages with the cable cover holding member, and FIG. 1B is a cross-sectional view (part 2) for explaining how the cable cover according to the second embodiment engages with the cable cover holding member. [Figure 24] FIG. 11 is a perspective view for explaining an effect of the actuator according to the second embodiment. [Diagram 25] 13(A) to 13(E) are perspective views for explaining effects of the connector cover holding member and the connector cover according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Embodiment 1 The actuator 1 according to the first embodiment of the present invention will be described below with reference to the drawings. For ease of understanding, XYZ coordinates are set and referred to as appropriate. The Y-axis direction in the drawings is parallel to the first direction D1 in which the slide cover C advances and retreats, as shown in Figs. 1 and 2, and the X-axis direction and the Z-axis direction are perpendicular to the first direction D1. The XY plane in the drawings is a horizontal plane parallel to the surface F on which the actuator 1 is installed.

[0024] 1 to 3, the actuator 1 is a slider-type linear actuator in which a slide cover C reciprocates in a first direction D1. The actuator 1 includes a motor unit 10, a ball screw 20, an actuator housing 30, a movable body 40, a connector cover holding member 50, a connector cover 60, and a connector 70.

[0025] The motor unit 10 has a motor body 11 (motor), a motor case 12, a first coupling 19, and an encoder. The motor unit 10 is configured as a single unit that is detachable from the actuator housing 30, for example. However, this is not limited to this. The motor unit 10 may be fixed integrally to the actuator housing 30 so that it cannot be detached.

[0026] The motor body 11 is, for example, a stepping motor or a servo motor, and has an output shaft 11a (rotating shaft), a rotor, a stator, and the like. Electric power is supplied to the motor body 11 from a commercial power source or a DC power source via a cable 71 connected to a connector 70. When electric power is supplied to the motor body 11, the rotor of the motor body 11 rotates. The rotational motion of the rotor is output to the output shaft 11a. A ball screw shaft 21 of a ball screw 20 is connected to the output shaft 11a via a pair of a first coupling 19 and a second coupling 23. The output shaft 11a rotates based on the rotational motion of the rotor of the motor body 11, and as a result, the ball screw shaft 21 of the ball screw 20 rotates together with the output shaft 11a.

[0027] The motor case 12 protects the motor body 11 by housing the motor body 11. As shown in FIG. 4, in the present embodiment 1, the motor case 12 has two members: a motor case body and a motor cover that covers the rear end portion of the motor case body on the +Y side. However, this is not limited to this. The motor case 12 may be formed such that the motor case body and the motor cover are integrally formed. The motor case 12 has a flat wall surface 13 perpendicular to the first direction D1. The wall surface 13 has a hole 13a and a screw hole 13b provided around the hole 13a.

[0028] A cable (not shown) drawn from the motor body 11 or the like is inserted or disposed in the hole 13a.

[0029] The screw holes 13b are formed at equal intervals along a circumference R3 centered on a central axis A1 that is in the same direction as the Y-axis direction. Specifically, the screw holes 13b are formed at 90° intervals along the circumference R3.

[0030] 3, the first coupling 19 is fixed to the output shaft 11a of the motor body 11. The first coupling 19 transmits the rotational motion of the output shaft 11a of the motor body 11 to the ball screw shaft 21 of the ball screw 20 by engaging with a second coupling 23 fixed to the ball screw shaft 21 of the ball screw 20.

[0031] The ball screw 20 converts the rotational motion of the output shaft 11a of the motor body 11 into the linear motion of the moving body 40. The ball screw 20 has a ball screw shaft 21 and a ball screw nut 22 that screws onto the ball screw shaft 21.

[0032] The ball screw shaft 21 linearly moves the ball screw nut 22 in the first direction D1 based on the screwing with the ball screw nut 22. The ball screw shaft 21 has a ball screw shaft main body 21a whose outer circumferential surface is configured as a helical ball screw surface, and ends 21b, 21c whose outer circumferential surfaces are not configured as a ball screw surface and whose diameter is smaller than that of the ball screw shaft main body 21a. Of the ends 21b, 21c, the end 21b on the -Y side is configured as a free end that is not supported by the actuator housing 30. A second coupling 23 is fixed to the end 21c on the +Y side opposite to the end 21b. The second coupling 23 engages with the first coupling 19 fixed to the output shaft 11a of the motor unit 10 so as to rotate together with the first coupling 19.

[0033] The ball screw nut 22 is disposed on the outer periphery of the ball screw shaft main body 21a of the ball screw shaft 21. The ball screw nut 22 is fitted onto the ball screw shaft 21 via a plurality of ball screw rolling elements. As the ball screw rolling elements roll, the rotational motion of the ball screw shaft 21 is smoothly converted into linear motion of the ball screw nut 22. In addition, the ball screw nut 22 is fixed to the moving body 40 by fasteners such as bolts or screws.

[0034] 1 and 3, the actuator housing 30 accommodates and protects the ball screw 20 and the movable body 40. The actuator housing 30 has, for example, a base 31, a pair of side covers 32R, 32L, a seat member 33, a front bracket 34, and a rear bracket 35.

[0035] A rail (not shown) is provided on the base 31. A moving body 40 is supported on the rail of the base 31 via a linear guide rolling element. The linear guide rolling element rolls on this rail, causing the moving body 40 to smoothly reciprocate in the first direction D1 relative to the base 31.

[0036] The side covers 32R and 32L constitute the side wall portions on both sides of the actuator housing 30. The side covers 32R and 32L, together with the base 31, protect each component part inside the actuator 1. In the present embodiment 1, the side covers 32R and 32L are formed separately from the base 31. However, this is not limited to this. The side covers 32R and 32L may be formed integrally with the base 31. In this case, the base 31 is formed so that the XZ cross section is substantially U-shaped. In addition, in the base 31 that is formed integrally with the side covers 32R and 32L, a rail on which the linear guide rolling elements roll may be provided on the inner wall surface of the portion corresponding to the side covers 32R and 32L.

[0037] The sheet member 33 is a substantially rectangular stainless steel sheet whose longitudinal direction is the Y-axis direction, and closes the opening 32a between the pair of side covers 32R, 32L. An end portion on the -Y side of the sheet member 33 is fixed to the front bracket 34. An end portion on the +Y side of the sheet member 33 is fixed to the rear bracket 35.

[0038] The front bracket 34 is a cap-shaped member fixed to the end side on the -Y side of the base 31. In the first embodiment, the front bracket 34 does not support the end 21c of the ball screw shaft 21, but this is not limited to the above. For example, the front bracket 34 may have a bearing and rotatably support the end 21b of the ball screw shaft 21 by means of this bearing.

[0039] The rear bracket 35 is fixed to the end portion on the +Y side of the base 31. The rear bracket 35 has, for example, a bearing, and rotatably supports the end portion 21c of the ball screw shaft 21 by this bearing.

[0040] The moving body 40 is a member that slides in both the +Y direction and the -Y direction in the first direction D1 together with the ball screw nut 22. The moving body 40 has a through hole 41 that penetrates in the Y-axis direction. The ball screw shaft 21 is inserted into this through hole 41, and the ball screw nut 22 is inserted and fixed in place. In addition, a slide cover C is attached to the moving body 40 from the upper side (+Z side).

[0041] As shown in FIG. 4, the connector cover holding member 50 is supported on the wall surface 13 of the motor case 12 of the motor unit 10. The connector cover holding member 50 has two fasteners 52 inserted therethrough and two through holes 51 penetrating in the Y-axis direction. The connector cover holding member 50 is fixed to the wall surface 13 of the motor case 12 by screwing the two fasteners 52 inserted into the through holes 51 into two of the four screw holes 13b. As shown in FIG. 4 and FIG. 5, the connector cover holding member 50 is formed so that it can be installed at a plurality of rotation positions (four rotation positions in the first embodiment) around the first direction D1 relative to the wall surface 13 by rotating the connector cover holding member 50 in a rotation direction R1 around the first direction D1. The mounting orientation of the side surface 50-2 can be changed by rotating the connector cover holding member 50 around the first direction D1 relative to the wall surface 13. In the first embodiment, the mounting direction of the side surface 50-2 can be changed to any one of four directions, namely, +Z direction, +X direction, -Z direction, and -X direction. Specifically, the connector cover holding member 50 is installed at any one of four rotation positions with respect to the motor case 12 by rotating the connector cover holding member 50 in a rotation direction R1 around the first direction D1 and selecting the screw hole 13b into which the two fasteners 52 are screwed. In the first embodiment, the connector cover holding member 50 is formed so as to be able to be held at every predetermined rotation angle (every 90° in the first embodiment) around the first direction D1 with respect to the wall surface 13. The fasteners 52 are, for example, bolts or screws. However, the present invention is not limited to this, and the method of fixing the connector cover holding member 50 to the wall surface 13 of the motor case 12 may be other than bolts or screws.

[0042] The connector cover holding member 50 is formed in a shape having a rear end surface 50-1 (first surface), an upper side surface 50-2 (second surface), and a mounting surface 50-3 on the tip side (-Y side). The rear end surface 50-1 is a surface parallel to the wall surface 13 of the motor case 12. The upper side surface 50-2 is provided perpendicular to the rear end surface 50-1. The mounting surface 50-3 is a surface provided perpendicular to the side surface 50-2 and is a surface on the opposite side to the rear end surface 50-1. The mounting surface 50-3 is also a surface that is installed while facing the wall surface 13 of the motor case 12. An opening 50a into which the connector 70 is fitted is formed in the rear end surface 50-1 and the side surface 50-2 from the rear end surface 50-1 to the side surface 50-2. The opening 50a is formed so as to open a connector cover arrangement space provided inside the connector cover holding member 50 to the outside.

[0043] As shown in FIG. 6, the connector cover holding member 50 has a pair of engaged grooves 53 (engaged portions) formed on the inner wall surface of the connector cover arrangement space.

[0044] 7(A) and (B), the connector cover holding member 50 is formed with a protrusion 59 protruding from the installation surface 50-3. The protrusion 59 is formed to fit into the screw hole 13b, as shown in FIG. 7(C).

[0045] 5, the connector cover holding member 50 configured as described above is formed so as to be removable from the motor case 12 by removing the fastener 52 from the screw hole 13b of the wall surface 13. The connector cover holding member 50 is also formed so as to be reattachable to the wall surface 13 of the motor case 12 by rotating it around the first direction D1 and then screwing the fastener 52 into the screw hole 13b.

[0046] 1 and 4, the connector cover 60 is a member provided with a connector connection port 61 to which a connector 70 is connected. The connector cover 60 is supported by the connector cover holding member 50 so that the angle of the opening direction D3 of the connector connection port 61 with respect to the first direction D1 can be changed. The connector cover 60 is formed with a pair of engagement portions 62 protruding from the +X side surface and the -X side surface as shown in Figs. 8 and 9. The engagement portions 62 are formed to engage with the engaged grooves 53 of the connector cover holding member 50.

[0047] The connector cover 60 is formed so as to be installable at a plurality of rotation positions (three rotation positions in the first embodiment) around the second direction D2 relative to the connector cover holding member 50 by rotating the connector cover 60 in a rotation direction R2 around the second direction D2, which is the same direction as the X-axis direction. Specifically, the connector cover 60 is installed at any one of a plurality of rotation positions relative to the connector cover holding member 50 by rotating the connector cover 60 in the rotation direction R2 around the second direction D2 and then engaging the engaging portion 62 with the engaged groove 53 of the connector cover holding member 50. In the first embodiment, the engaging portion 62 is formed in an octagonal prism shape. As shown in FIG. 9(C), the connector cover 60 is formed so as to be fixable at a predetermined angle (every 45 degrees in the first embodiment) around the second direction D2 relative to the connector cover holding member 50 by facing the side surface of the octagonal prism shape of the engaging portion 62 to the inner wall surface of the engaged groove 53 of the connector cover holding member 50.

[0048] In the first embodiment, the engagement parts 62 are provided on the +X side surface and the -X side surface, downward (towards -Z) from the vicinity of the center and towards -Y, as shown in Fig. 8(A) and Fig. 9. Therefore, when the user rotates the connector cover 60 45° around the second direction D2, as shown in Fig. 8(A) and (B), the connector cover 60 is first turned upside down by rotating it 180° around the Y axis, and then rotated 45° around the second direction D2.

[0049] 8(A) and (C), when the user rotates the connector cover 60 by 90° around the second direction D2, the connector cover 60 is first rotated 180° around the Y axis to turn it upside down, and then rotated 90° around the second direction D2. At this time, the ceiling surface 60a of the connector cover 60 faces downward (+Y side) and is disposed so as to be approximately parallel to the rear end surface 50-1 of the connector cover holding member 50.

[0050] On the other hand, when the user rotates the connector cover 60 from the position where it is rotated 45° as shown in FIG. 8(B) to a further 45° as shown in FIG. 8(C), the connector cover 60 is simply rotated 45° around the second direction D2 without being turned upside down.

[0051] In the first embodiment, the engagement portion 62 is provided on the +X side surface and the -X side surface, downward (toward -Z) from the vicinity of the center and toward the -Y side, as shown in Fig. 8(A) and Fig. 9. However, this is not limited thereto. The engagement portion 62 may be provided near the center of the +X side surface and the -X side surface.

[0052] Furthermore, in addition to the connector connection port 61 and the engagement portion 62, the connector cover 60 is formed with a notched recess 63. The recess 63 is provided in a ceiling surface 60a on the +Z side of the connector cover 60. This recess 63 is formed so as to be exposed from the opening 50a of the connector cover holding member 50 when the connector cover 60 is attached to the connector cover holding member 50, regardless of the rotational position of the connector cover 60 about the second direction D2.

[0053] The connector cover 60 configured as described above is formed so as to be removable from the connector cover holding member 50 by moving it in the -Y direction as shown in Figures 8 and 9. The connector cover 60 is also formed so as to be able to be attached to the connector cover holding member 50 again after being rotated about the second direction D2.

[0054] 1, the connector 70 is used to supply power or a signal to the motor body 11. A cable 71 that is connected to an external power source, a controller, or an external device (not shown) is connected to the connector 70. The connector 70 is also formed with a claw (not shown) that is used to release the connection with the connector connection port 61 of the connector cover 60. When the connector 70 is connected to the connector connection port 61 of the connector cover 60, the claw of the connector 70 is positioned in the recess 63 of the connector cover 60.

[0055] As described above, the actuator 1 according to the first embodiment includes the connector cover holding member 50 and the connector cover 60, as shown in FIG. 10. The connector cover holding member 50 is formed so as to be able to be installed at a plurality of rotation positions around the first direction D1 with respect to the wall surface 13. The connector cover 60 is supported at a plurality of rotation positions around the second direction D2 with respect to the connector cover holding member 50. As a result, in the first embodiment, by combining changing the installation position of the connector cover holding member 50 with respect to the wall surface 13 around the first direction D1 and changing the installation position of the connector cover 60 with respect to the connector cover holding member 50 around the second direction D2, the opening direction D3 of the connector connection port 61 of the connector cover 60 can be changed as shown in FIG. 11. As a result, the actuator 1 can change the drawing direction D4 of the cable 71 from the motor case 12. Furthermore, since the drawing direction D4 of the cable 71 from the motor case 12 can be easily adjusted to any direction, it is possible to prevent the cable 71 from interfering with an external device installed near the actuator 1.

[0056] 4, the actuator 1 according to the first embodiment makes it possible to adjust the direction D4 in which the cable 71 is pulled out from the motor case 12 using two parts, the connector cover holding member 50 and the connector cover 60. This makes it possible to reduce the number of parts compared to the conventional actuator described in Patent Document 1. As a result, it is possible to provide an actuator 1 that can change the direction D4 in which the cable 71 is pulled out from the motor case 12 while simplifying the structure.

[0057] In the first embodiment, the connector cover 60 is formed with a notched recess 63 as shown in Figs. 1 and 11. When the connector 70 is connected to the connector connection port 61, the claw of the connector 70 is disposed in the recess 63. This causes the claw of the connector 70 to be exposed to the outside of the actuator 1, making it easier for the user of the actuator 1 to operate the claw of the connector 70. As a result, the actuator 1 can improve the operability of the connector 70.

[0058] Embodiment 2 Next, an actuator 2 according to a second embodiment of the present invention will be described with reference to the drawings. Differences from the first embodiment will be mainly described. Other than the differences described, the actuator 2 is the same as or equivalent to the first embodiment. For ease of understanding, XYZ coordinates will be set and referred to as appropriate.

[0059] 12, the actuator 2 is a slider-type linear actuator in which a slide cover C reciprocates in a first direction D1. The actuator 2 includes a motor unit 10, a ball screw 20, an actuator housing 30, a moving body 40, a connector cover holding member 50, a connector cover 60, and a connector 70.

[0060] The motor unit 10 has a motor body 11 (motor), a motor case 12, a first coupling 19, and an encoder. Each component part of the motor unit 10 other than the motor case 12 is equivalent to that of the actuator 1 according to the first embodiment.

[0061] The motor case 12 protects the motor body 11 by housing it. As shown in Fig. 13, the motor case 12 has a flat wall surface 13 perpendicular to the first direction D1. The wall surface 13 is formed with a hole 13a in which a cable (not shown) drawn out from the motor body 11 and the like is disposed, a rotation guide groove 14, an engaged hole 15 (recess), and a stopper 16.

[0062] As shown in FIG. 14, the hole 13a is formed so as to communicate from the inside to the outside of the motor case 12, and is a circular hole having a perfectly circular cross section.

[0063] The rotation guide groove 14 is provided in an arc shape along the edge of the opening on the front side (+Y side) of the hole 13a.

[0064] The engaged holes 15 (recesses) are formed at equal intervals along the arc that constitutes the rotation guide groove 14. Specifically, four engaged holes 15 are formed at 90° intervals along the arc that constitutes the rotation guide groove 14.

[0065] The stoppers 16 are formed as wall surfaces provided at both ends of the arc that constitutes the rotation guide groove 14 .

[0066] As shown in FIG. 12, the ball screw 20, the actuator housing 30, and the moving body 40 are the same as those in the actuator 1 according to the first embodiment.

[0067] 13 and 14, the connector cover holding member 50 is supported by the wall surface 13 of the motor case 12 of the motor unit 10. The connector cover holding member 50 is formed with an arm 54 and an engaging protrusion 55 (convex portion).

[0068] As shown in Fig. 15, the arm 54 has a locking claw 54a formed at its tip, which hooks into the opening on the back side (-Y side) of the hole 13a. In the second embodiment, three arms 54 are formed. However, this is not limited to this. The number of arms 54 formed is arbitrary and may be a number other than three. The arm 54 has an outer peripheral surface 54b with a radius of curvature equal to the radius of curvature of the inner surface of the hole 13a in the motor case 12, and the outer peripheral surface 54b is formed so as to be slidable on the inner surface of the hole 13a.

[0069] As shown in FIG. 14, the engagement protrusion 55 is formed to protrude in the -Y direction from the installation surface 50-3 of the connector cover holding member 50 facing the wall surface 13 of the motor case 12. The engagement protrusion 55 is formed so as to be able to slide on the inner surface of the groove for rotation guide 14 of the motor case 12 and to be fitted into the engaged hole 15. The engagement protrusion 55 positions the connector cover holding member 50 with respect to the motor case 12 by fitting into the engaged hole 15. Also, as shown in FIG. 14 and FIG. 16, the engagement protrusion 55 slides in the rotation direction R1 along the groove for rotation guide 14 to guide the rotation of the connector cover holding member 50 with respect to the motor case 12. Furthermore, the engagement protrusion 55 abuts against the stopper 16 to restrict the rotation of the connector cover holding member 50 with respect to the motor case 12 beyond a predetermined limit. As a result, the engagement protrusion 55 and the stopper 16 prevent the cable installed in the hole 13a from being twisted excessively. As a result, the engaging protrusion 55 and the stopper 16 prevent breakage of the cable installed in the hole 13a. In the second embodiment, one engaging protrusion 55 is formed on the installation surface 50-3. However, this is not limited to this. Two or more engaging protrusions 55 may be formed on the installation surface 50-3.

[0070] The connector cover holding member 50 thus configured is supported on the wall surface 13 of the motor case 12 so as to be rotatable about the first direction D1 by the locking claw 54a of the arm 54 being caught in the opening on the back side (-Y side) of the hole 13a, as shown in Figs. 14, 17, and 18. The connector cover holding member 50 is formed so as to be installable at a plurality of rotation positions (four rotation positions in the second embodiment) about the first direction D1 relative to the motor case 12 by rotating the arm 54 in a rotation direction R1 or a reverse rotation direction R1' about the first direction D1 while sliding on the inner surface of the hole 13a of the motor case 12. The mounting orientation of the side surface 50-2 can be changed by rotating the connector cover holding member 50 about the first direction D1 relative to the wall surface 13. In the first embodiment, the mounting orientation of the side surface 50-2 can be changed to any one of four directions, the -Z direction, the -X direction, the +Z direction, and the +X direction. Specifically, the connector cover holding member 50 is installed at one of four rotation positions relative to the motor case 12 by rotating the engaging protrusion 55 in a rotation direction R1 or a reverse rotation direction R1' about the first direction D1 while sliding the engaging protrusion 55 in the rotation guide groove 14, and fitting the engaging protrusion 55 into one of the four engaged holes 15. In the second embodiment, the connector cover holding member 50 is formed so as to be able to be held at every predetermined rotation angle (every 90° in the second embodiment) about the first direction D1 relative to the wall surface 13.

[0071] As shown in Figs. 13 and 14, the connector cover holding member 50 is formed in a shape having a rear end surface 50-1 (first surface), a lower side surface 50-2 (second surface), and a mounting surface 50-3 on the tip side (-Y side). The rear end surface 50-1 is a surface parallel to the wall surface 13 of the motor case 12. The lower side surface 50-2 is provided perpendicular to the rear end surface 50-1. The mounting surface 50-3 is a surface provided perpendicular to the side surface 50-2 and is a surface on the opposite side to the rear end surface 50-1. The mounting surface 50-3 is also a surface that is provided facing the wall surface 13 of the motor case 12. An opening 50a into which the connector 70 is fitted is formed in the rear end surface 50-1 and the side surface 50-2, from the rear end surface 50-1 to the side surface 50-2. The opening 50a is formed so as to open the connector cover arrangement space provided inside the connector cover holding member 50 to the outside.

[0072] As shown in FIG. 19, the connector cover holding member 50 has a pair of engaged grooves 53 (engaged portions) formed on the inner wall surface of the connector cover arrangement space.

[0073] As shown in FIG. 20, the engaged groove 53 is formed with a positioning recess 53a and a snap-fit ​​protrusion 53b.

[0074] The connector cover holding member 50 configured as described above can be rotated in the first direction D1 relative to the wall surface 13 of the motor case 12 without being removed from the motor case 12, as shown in Figures 17 and 18. However, this is not limited to this. The connector cover holding member 50 may be rotated in the first direction D1 after the locking claw 54a of the arm 54 is removed from the opening on the back side (-Y side) of the hole 13a, and then attached to the motor case 12 again.

[0075] As shown in Figs. 21 and 22, the connector cover 60 is a member provided with a connector connection port 61 to which a connector 70 is connected. The connector cover 60 is supported by the connector cover holding member 50 so that the connector connection port 61 and its vicinity protrude from the rear end surface 50-1 or the lower side surface 50-2 of the connector cover holding member 50. The connector cover 60 is supported by the connector cover holding member 50 so that the angle of the opening direction D3 of the connector connection port 61 with respect to the first direction D1 can be changed. A pair of engagement parts 62 are formed on the connector cover 60 so as to protrude from the +X side surface and the -X side side surface. The engagement parts 62 are formed in a cylindrical shape that rotatably engages with the engaged groove 53 of the connector cover holding member 50. The snap-fit ​​protrusions 53b of the engaged groove 53 prevent the engagement parts 62 engaged with the engaged groove 53 from coming off, thereby preventing the connector cover 60 from coming off the connector cover holding member 50.

[0076] The connector cover 60 is formed so as to be installable at a plurality of rotation positions (two rotation positions in the second embodiment) around the second direction D2 with respect to the connector cover holding member 50 by rotating the connector cover 60 in a rotation direction R2 around the second direction D2. Specifically, as shown in FIG. 23, the connector cover 60 is installed at any one of a plurality of rotation positions with respect to the connector cover holding member 50 by rotating the connector cover 60 in the rotation direction R2 around the second direction D2 and engaging the engaging portion 62 with the engaged groove 53 of the connector cover holding member 50. In the second embodiment, the engaging portion 62 is formed in a substantially cylindrical shape having two positioning projections 62a. The positioning projections 62a are fitted into the positioning recessed portions 53a of the engaged groove 53, so that the connector cover 60 is fixable at 90° intervals around the second direction D2 with respect to the connector cover holding member 50. When the connector cover 60 is rotated relative to the connector cover holding member 50, the engaged groove 53 fits into the positioning recess 53a, thereby giving a clicking sensation to the user performing the rotation operation.

[0077] 21 and 22, in addition to the connector connection port 61 and the engagement portion 62, the connector cover 60 is formed with a notched recess 63. The recess 63 is provided in a ceiling surface 60a on the +Z side of the connector cover 60. When the connector cover 60 is attached to the connector cover holding member 50, this recess 63 is formed so as to be exposed from the opening 50a of the connector cover holding member 50, regardless of the rotational position of the connector cover 60 about the second direction D2.

[0078] The connector cover 60 configured as described above can be rotated about the X-axis direction relative to the connector cover holding member 50 without being removed from the connector cover holding member 50, as shown in Fig. 23. However, this is not limited to this. The connector cover 60 may be removed from the connector cover holding member 50, rotated about the second direction D2, and then attached to the connector cover holding member 50 again.

[0079] 12, the connector 70 is used to supply power or a signal to the motor body 11. A cable 71 that is connected to an external power source, a controller, or an external device is connected to the connector 70. The connector 70 is also formed with a claw (not shown) that is used to disconnect the connector 70 from the connector connection port 61 of the connector cover 60. When the connector 70 is connected to the connector connection port 61 of the connector cover 60, the claw of the connector 70 is positioned in the recess 63 of the connector cover 60.

[0080] As described above, the actuator 2 according to the second embodiment includes the connector cover holding member 50 and the connector cover 60, as shown in FIG. 24. The connector cover holding member 50 is formed so as to be able to be installed at a plurality of rotation positions around the first direction D1 with respect to the wall surface 13. The connector cover 60 is supported at a plurality of rotation positions around the second direction D2 with respect to the connector cover holding member 50. As a result, in the second embodiment, by combining changing the installation position of the connector cover holding member 50 with respect to the wall surface 13 around the first direction D1 and changing the installation position of the connector cover 60 with respect to the connector cover holding member 50 around the second direction D2, the opening direction D3 of the connector connection port 61 of the connector cover 60 can be changed as shown in FIG. 25. As a result, the actuator 2 can change the drawing direction D4 of the cable 71 from the motor case 12. Furthermore, since the drawing direction D4 of the cable 71 from the motor case 12 can be easily adjusted to any direction, it is possible to prevent the cable 71 from interfering with an external device installed near the actuator 2.

[0081] 13, the actuator 2 according to the second embodiment makes it possible to adjust the direction D4 in which the cable 71 is pulled out from the motor case 12 using two parts, the connector cover holding member 50 and the connector cover 60. This makes it possible to reduce the number of parts compared to the conventional actuator described in Patent Document 1. As a result, it is possible to provide an actuator 2 that can change the direction D4 in which the cable 71 is pulled out from the motor case 12 while simplifying the structure.

[0082] 14 and 16, the wall surface 13 of the motor case 12 is provided with a stopper 16 that restricts rotation of the connector cover holding member 50 in the first direction D1 relative to the wall surface 13 by contacting with the engaging protrusion 55. Thus, the stopper 16, together with the engaging protrusion 55, can prevent the cable installed in the hole 13a from being twisted excessively. Thus, the stopper 16, together with the engaging protrusion 55, can prevent breakage of the cable installed in the hole 13a.

[0083] In the second embodiment, the connector cover 60 is formed with a notched recess 63 as shown in Figs. 12 and 25. When the connector 70 is connected to the connector connection port 61, the claws of the connector 70 are disposed in the recess 63. In the second embodiment, the connector cover 60 is supported by the connector cover holding member 50 such that the connector connection port 61 and its vicinity protrude from the rear end surface 50-1 or the lower side surface 50-2 of the connector cover holding member 50. As a result, the claws of the connector 70 are exposed to the outside of the actuator 2, making it easier for the user of the actuator 2 to operate the claws of the connector 70. As a result, the actuator 2 can improve the operability of the connector 70.

[0084] Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

[0085] For example, in the above-mentioned embodiments 1 and 2, as shown in Fig. 10 and Fig. 24, the connector cover holding member 50 is formed so as to be installable at a plurality of rotational positions about the first direction D1 with respect to the wall surface 13. However, the connector cover holding member 50 does not necessarily need to be formed so as to be installable at a plurality of rotational positions about the first direction D1 with respect to the wall surface 13. It is sufficient that the connector cover holding member 50 is formed so as to be installable at a plurality of positions on the wall surface 13 or installable in a plurality of mounting orientations with respect to the wall surface 13.

[0086] Also, in the above-mentioned first and second embodiments, the connector cover 60 is formed so as to be installable at a plurality of rotational positions about the second direction D2 relative to the connector cover holding member 50. However, the connector cover 60 does not necessarily need to be formed so as to be installable at a plurality of rotational positions about the second direction D2 relative to the connector cover holding member 50. It is sufficient that the connector cover 60 is supported by the connector cover holding member 50 so that the angle of the opening direction D3 of the connector connection port 61 relative to the first direction D1 is changeable.

[0087] In the above-described first and second embodiments, the connector cover holding member 50 is formed so as to be able to be held at every 90° around the first direction D1 relative to the wall surface 13 of the motor case 12, as shown in Fig. 5, Fig. 17, and Fig. 18. However, this is not limited thereto. The connector cover holding member 50 may be formed so as to be able to be held at every predetermined rotation angle other than 90° around the first direction D1 relative to the wall surface 13 of the motor case 12.

[0088] In the above-described first embodiment, the connector cover 60 is formed so as to be able to be held by the connector cover holding member 50 at every 45° around the second direction D2, as shown in Fig. 8. However, this is not limited thereto. The connector cover 60 may be formed so as to be able to be held by the connector cover holding member 50 at every predetermined rotation angle other than 45° around the second direction D2.

[0089] In the second embodiment, the connector cover 60 is formed so as to be able to be held by the connector cover holding member 50 at every 90°, as shown in Fig. 23. However, this is not limited thereto. The connector cover 60 may be formed so as to be able to be held by the connector cover holding member 50 at every predetermined rotation angle other than 90°.

[0090] 14 and 16, the wall surface 13 is provided with a stopper 16 that restricts the rotation of the connector cover holding member 50 relative to the wall surface 13. However, this is not limited to this. The stopper 16 may be provided on the connector cover holding member 50 instead of the wall surface 13.

[0091] In the above-mentioned second embodiment, as shown in Fig. 14, a plurality of engaged holes 15 (recesses) are formed in the wall surface 13, and engaging protrusions 55 (protrusions) are formed in the connector cover holding member 50. However, this is not limited to this. Conversely, the engaged holes 15 (recesses) may be formed in the connector cover holding member 50, and the engaging protrusions 55 (protrusions) may be formed in the wall surface 13.

[0092] The present invention allows various embodiments and modifications without departing from the broad spirit and scope of the present invention. The above-described embodiments are for explaining the present invention and do not limit the scope of the present invention. [Explanation of symbols]

[0093] 1, 2: Actuator 10: Motor unit 11: Motor body 11a: Output shaft 12: Motor case 13: Wall 13a: hole 13b: Screw hole 14: Rotation guide groove 15: Engaged hole (recess) 16: Stopper 19: 1st coupling 20: Ball screw 21: Ball screw shaft 21a: Ball screw shaft body 21b, 21c: End 22: Ball screw nut 23: 2nd coupling 30: Actuator housing 31: Bass 32R, 32L: Side cover 32a: Opening part 33: Sheet material 34: Front bracket 35: Rear bracket 40: Mobile 41:Through hole 50: Connector cover holding member 50-1: Rear end surface (first surface) 50-2: Side (second side) 50-3: Installation surface 50a: opening 51:Through hole 52: Fastener 53: Engaged groove (engaged part) 53a: Positioning recess 53b: Snap fit protrusion 54: Arm 54a: Locking claw 54b: Outer surface 55: Engagement protrusion (convex portion) 59: Convex 60: Connector cover 60a: Ceiling surface 61: Connector port 62: Engagement part 62a: Positioning protrusion 63: Recess 70: Connector 71: Cable C: Slide cover D1: 1st direction D2:Second direction D3: Opening direction D4: Pulling direction R1: Rotation direction R1': Reverse rotation direction R2: Rotation direction R3: Circumference A1: Central axis F:Face

Claims

1. a connector cover holding member supported by a wall surface of a motor case having a flat wall surface and configured to be installed at a plurality of rotational positions around a first direction perpendicular to the wall surface by rotating the connector cover holding member around a first direction; a connector cover that is provided with a connector connection port to which a connector for supplying power or a signal to a motor is connected and that is supported by the connector cover holding member; Equipped with The actuator is configured so that the angle of the opening direction of the connector connection port can be changed by rotating the connector cover around a second direction parallel to the wall surface and supporting the connector cover at multiple rotational positions around the second direction relative to the connector cover holding member.

2. The actuator according to claim 1 , wherein the connector cover holding member is supported by the wall surface of the motor case so as to be rotatable about the first direction.

3. The actuator according to claim 2 , wherein at least one of the connector cover holding member and the wall surface is provided with a stopper that restricts rotation of the connector cover holding member relative to the wall surface about the first direction.

4. The actuator according to claim 1 , wherein the connector cover holding member is formed so as to be capable of being held at each of a predetermined rotation angle around the first direction relative to the wall surface of the motor case.

5. A plurality of screw holes into which fasteners are screwed are formed in the wall surface of the motor case, 5. The actuator according to claim 4, wherein the connector cover holding member is formed so as to be capable of being held at each of a predetermined rotation angle by screwing the fastener into any one of the plurality of screw holes.

6. A plurality of recesses are formed in one of the connector cover holding member and the wall surface, A convex portion is formed on the other of the connector cover holding member and the wall surface, The actuator according to claim 4 , wherein the connector cover holding member is formed so as to be capable of holding the connector cover at each of a predetermined rotation angle by fitting the convex portion into any of the concave portions.

7. 7. The actuator according to claim 1, wherein the connector cover holding member is formed to be removable from the wall surface of the motor case and is formed to be attachable to the wall surface after rotating around the first direction.

8. The actuator according to claim 1 , wherein the connector cover is formed so as to be able to be held by the connector cover holding member at each of predetermined rotation angles around the second direction.

9. An engagement portion formed in a polygonal column shape is formed on one of the connector cover and the connector cover holding member, an engaged portion is formed on the other of the connector cover and the connector cover holding member; The actuator according to claim 8 , wherein the connector cover is formed so as to be capable of being held at each of a predetermined rotation angle by the engaging portion engaging with the engaged portion.

10. A cylindrical engaging portion is formed on one of the connector cover and the connector cover holding member, an engaged portion is formed on the other of the connector cover and the connector cover holding member; The actuator according to claim 8 , wherein the connector cover is supported rotatably around the second direction relative to the connector cover holding member by the engaging portion being rotatably engaged with the engaged portion.

11. a positioning protrusion is formed on one of the engaging portion and the engaged portion; a positioning recess is formed on the other of the engaging portion and the engaged portion, The actuator according to claim 10 , wherein the connector cover is formed so as to be capable of being held at each predetermined rotation angle by fitting the positioning projection into the positioning recess.

12. The actuator according to any one of claims 1 to 11, wherein the connector cover is formed to be removable from the connector cover holding member and is formed to be attachable to the connector cover holding member after rotating around the second direction parallel to the wall surface.

13. a connector cover holding member that is supported on a wall surface of a motor case having a flat wall surface and that is configured to be installable at a plurality of positions on the wall surface; a connector cover provided with a connector connection port to which a connector for supplying power or a signal to a motor is connected, the connector cover being supported by the connector cover holding member such that an angle of an opening direction of the connector connection port with respect to a first direction perpendicular to the wall surface can be changed; Equipped with The actuator, wherein the connector cover is formed so as to be removable from the connector cover holding member, and is formed so as to be attachable to the connector cover holding member after rotating about a second direction parallel to the wall surface.

14. The connector cover holding member is formed in a shape having a first surface parallel to the wall surface and a second surface perpendicular to the first surface, The actuator according to claim 1 , wherein an opening into which at least a portion of the connector is fitted is formed across the first surface and the second surface.

15. a connector cover holding member that is supported on a wall surface of a motor case having a flat wall surface and that is configured to be installable at a plurality of positions on the wall surface; a connector cover provided with a connector connection port to which a connector for supplying power or a signal to a motor is connected, the connector cover being supported by the connector cover holding member such that an angle of an opening direction of the connector connection port with respect to a first direction perpendicular to the wall surface can be changed; Equipped with The connector cover holding member is formed in a shape having a first surface parallel to the wall surface and a second surface perpendicular to the first surface, An actuator, wherein an opening into which at least a portion of the connector is fitted is formed from the first surface to the second surface.

Images