JP3156581U - Actuator module - Google Patents

Abstract

An actuator module in which an increase in size in a plane direction orthogonal to an axial direction of an output shaft is suppressed. The actuator module 1 includes a housing, an electromagnetic actuator 40 housed in the housing, a reduction gear 70 housed in the housing, to which power of the electromagnetic actuator 40 is transmitted, and housed in the housing. The power of the electromagnetic actuator 40 is transmitted through the reduction gear 70, and the output gear 90 is disposed coaxially with the reduction gear 70 and has an output shaft 96 protruding outside the housing. [Selection] Figure 2

Description

  The present invention relates to an actuator module.

  There is known an actuator module that includes an actuator, an output gear having an output shaft, and a reduction gear that reduces the power of the actuator and transmits it to the output gear (see Patent Document 1).

JP-A-10-249755

  When the output gear and the reduction gear are arranged so as to be aligned in a planar direction perpendicular to the axial direction, the actuator module is enlarged in the planar direction.

  Accordingly, an object of the present invention is to provide an actuator module in which an increase in size in a plane direction perpendicular to the axial direction of the output shaft is suppressed.

  The object includes a housing, an actuator housed in the housing, a reduction gear housed in the housing, to which power of the actuator is transmitted, and housed in the housing, via the reduction gear. The actuator power can be achieved by an actuator module including an output gear that is transmitted coaxially with the reduction gear and has an output shaft that protrudes out of the housing.

  Since the reduction gear and the output gear are coaxially arranged, it is possible to suppress an increase in the size of the actuator module in the plane direction orthogonal to the axial direction.

  ADVANTAGE OF THE INVENTION According to this invention, the actuator module by which the enlargement in the plane direction orthogonal to the axial direction of an output shaft was suppressed can be provided.

The perspective view of the actuator module which concerns on a present Example. The exploded perspective view of an actuator module. Sectional drawing of an actuator module. Sectional drawing of the actuator module which concerns on a modification.

  FIG. 1 is a perspective view of an actuator module 1 according to the present embodiment. As shown in FIG. 1, the housing of the actuator module 1 includes a first case 10, a second case 20, and a third case 30. The first case 10, the second case 20, and the third case 30 are each made of synthetic resin and have a substantially rectangular shape. The second case 20 is sandwiched between the first case 10 and the third case 30. An output shaft 96 projects from the outer surface of the third case 30, and the pinion gear 100 is fitted to the output shaft 96. Cables Ca1, Ca2, Cb1, and Cb2 are drawn from the first case 10. The first case 10 is formed with escape holes 15 for drawing out the cables Ca1, Ca2, Cb1, and Cb2 to the outside.

  Next, the internal structure of the actuator module 1 will be described. FIG. 2 is an exploded perspective view of the actuator module 1. FIG. 3 is a cross-sectional view of the actuator module 1. As shown in FIGS. 2 and 3, an electromagnetic actuator 40 and a printed circuit board 50 are accommodated between the first case 10 and the second case 20. Reduction gears 70 and 80 and an output gear 90 are housed between the second case 20 and the third case 30. The intermediate gear 60 is accommodated between the first case 10 and the third case 30. Details will be described later.

  The electromagnetic actuator 40 includes a rotor 42, a stator 46, and exciting coils 48a and 48b. As shown in FIG. 3, the rotor 42 is rotatably supported by the support shaft 14 of the first case 10 and is magnetized with different polarities in the circumferential direction. The stator 46 is wound with coils 48a and 48b. The stator 46 has three magnetic pole portions that are excited to a predetermined polarity depending on the energized state of the coils 48a and 48b. The three magnetic pole portions are opposed to the rotor 42. The rotor 42 is rotated by the magnetic repulsive force and the attractive force generated between the three magnetic pole portions and the rotor 42. The rotor 42 has a rotation shaft 43, and a tooth portion 44 is formed at the tip of the rotation shaft 43.

  Terminal portions 58a1, 58a2, 58b1, and 58b2 are formed on the first surface side of the printed circuit board 50 as shown in FIG. One end of the coil 48a is soldered to the terminal portion 58a1, and the other end of the coil 48a is soldered to the terminal portion 58a2. Similarly, one end of the coil 48b is soldered to the terminal portion 58b1, and the other end of the coil 48b is soldered to the terminal portion 58b2. Thereby, the electromagnetic actuator 40 and the printed circuit board 50 are electrically connected. As shown in FIG. 1, the cables Ca1, Ca2, Cb1, and Cb2 are electrically connected to the terminal portions 58a1, 58a2, 58b1, and 58b2, respectively. Thereby, the energization state of the coils 48a and 48b can be controlled via the cables Ca1, Ca2, Cb1, and Cb2. As shown in FIG. 3, the printed board 50 is held between the first case 10 and the second case 20 and supported by a step portion 15 a formed in the first case 10.

  As illustrated in FIGS. 2 and 3, the intermediate gear 60 is rotatably supported by the support shaft 16 of the first case 10. Further, as shown in FIG. 2, the second case 20 is formed with an escape hole 26 for allowing the intermediate gear 60 to escape. The intermediate gear 60 has a large-diameter tooth portion 62 and a small-diameter tooth portion 64 that are concentric with each other. The large diameter tooth portion 62 has a larger pitch circle diameter than the small diameter tooth portion 64. As shown in FIG. 3, the tooth portion 44 formed at the tip of the rotating shaft 43 meshes with the large-diameter tooth portion 62. Thereby, the intermediate gear 60 rotates.

  As shown in FIGS. 2 and 3, the reduction gears 70 and 80 are rotatably supported by the support shafts 27 and 28 of the second case 20, respectively. The reduction gear 70 has a large diameter tooth portion 72 and a small diameter tooth portion 74 that are concentric. As shown in FIG. 3, the small diameter tooth portion 64 of the intermediate gear 60 meshes with the large diameter tooth portion 72. As a result, the reduction gear 70 rotates. The reduction gear 80 has a large-diameter tooth portion 82 and a small-diameter tooth portion 84 that are concentric. The small diameter tooth portion 74 of the reduction gear 70 meshes with the large diameter tooth portion 82. As a result, the reduction gear 80 rotates.

  The output gear 90 has a large diameter tooth portion 92 and an output shaft 96. As shown in FIG. 2, the output shaft 96 protrudes to the outside through the hole 39 of the third case 30. A pinion gear 100 is fitted to the output shaft 96 protruding outward from the third case 30. As shown in FIG. 3, the output gear 90 is rotatably held with the large-diameter tooth portion 92 and the pinion gear 100 sandwiching the wall surface of the third case 30. The small diameter tooth portion 84 of the reduction gear 80 meshes with the large diameter tooth portion 92. As a result, the output gear 90 rotates, and the pinion gear 100 also rotates together with the output shaft 96. As described above, the rotational power of the electromagnetic actuator 40 is decelerated and transmitted to the output gear 90. As shown in FIG. 3, a recess 97 is formed on the back side of the output gear 90 that faces the support shaft 27.

  As shown in FIG. 2, two pins 11 are formed diagonally on the edge of the first case 10. The second case 20 and the third case 30 are formed with fitting holes 21 and 31 for fitting with the pins 11, respectively.

  Next, a method for assembling the actuator module 1 will be described. The electromagnetic actuator 40 and the printed circuit board 50 are assembled to the first case 10, and the printed circuit board 50 and the coils 48a and 48b are soldered. Next, the intermediate gear 60 is assembled to the support shaft 16 of the first case 10 so as to mesh with the tooth portion 44. Next, the reduction gears 70 and 80 are assembled to the second case 20.

  Next, the output shaft 96 of the output gear 90 is inserted into the hole 39 of the third case 30, and the pinion gear 100 is fitted to the output shaft 96. At this time, the insertion depth of the output shaft 96 with respect to the pinion gear 100 is adjusted so that the output gear 90 does not rattle with respect to the third case 30.

  Thus, the 1st case 10, the 2nd case 20, and the 3rd case 30 in the state where each member was assembled are assembled. Specifically, the pin 11 of the first case 10 is fitted into the fitting holes 21 and 31.

  The assembled first case 10, second case 20, and third case 30 are arranged so that the side surfaces face upward, and an adhesive is applied to the recess 22 formed on one side surface of the second case 20. . An adhesive is applied to the recess 22 so that the first case 10 and the second case 20 are bonded, and the second case 20 and the third case 30 are bonded. After the adhesive is cured, the adhesive is applied to the concave portion 22 formed on the other side surface of the second case 20, and the first case 10 and the second case 20 are adhered to each other. 3 cases 30 are bonded together.

  As shown in FIG. 3, the output gear 90 and the reduction gear 70 are arranged coaxially. Thereby, the enlargement of the actuator module 1 in the plane direction orthogonal to the axial direction is suppressed.

  As shown in FIG. 3, the printed circuit board 50 is disposed so as to overlap the reduction gear 70 and the output gear 90 in the axial direction. Specifically, the printed circuit board 50, the reduction gears 70 and 80, and the output gear 90 are arranged so as to partially overlap in the axial direction. Also by this, the enlargement of the actuator module 1 in the plane direction orthogonal to the axial direction is suppressed.

  Further, as described above, the output gear 90 is held so as to sandwich the wall portion 32 of the third case 30 with the pinion gear 100. For this reason, the backlash in the axial direction of the output gear 90 is suppressed, and the driving sound resulting from the backlash is reduced.

  Further, as described above, the output gear 90 has the concave portion 97 that avoids contact with the support shaft 27 that rotatably supports the reduction gear 70. For this reason, generation | occurrence | production of the drive sound resulting from the output gear 90 and the support shaft 27 contacting is prevented.

  Further, as described above, the housing of the actuator module 1 houses the reduction gear 70, the output gear 90, and the like between the first case 10 and the second case 20 that house the electromagnetic actuator 40, and the second case 20. 3rd case 30 is included. Thereby, the assembly operation of the electromagnetic actuator 40 and the printed circuit board 50 to the first case 10 and the assembly operation of the reduction gears 70 and 80 to the second case 20 can be performed individually. For example, when connecting the coils 48a and 48b and the printed board 50, it is necessary to work using a soldering iron or the like. On the other hand, the jigs for the reduction gears 70 and 80, the output gear 90 and the like are not required. Thus, the assembly work of the actuator module 1 can be shared by a plurality of workers, and the assembly work can be made efficient.

  Next, a modified example of the actuator module will be described. FIG. 4 is a cross-sectional view of an actuator module 1a according to a modification. In addition, about the structure same or similar to the actuator module 1 which concerns on the Example mentioned above, the overlapping description is abbreviate | omitted by attaching the same code | symbol.

  As shown in FIG. 4, in the actuator module 1a, an engagement recess 91a formed in the output gear 90a and a support shaft 27a provided in the second case 20a are engaged and supported rotatably. That is, the output gear 90a and the reduction gear 70 are rotatably supported on the same support shaft 27a. Here, the output gear 90a is held between the wall portion 32 of the third case 30 and the distal end portion of the support shaft 27a, and movement of the support shaft 27a in the axial direction is restricted.

  Further, the output gear 90a is restricted from moving in the direction orthogonal to the axial direction of the support shaft 27a by engaging the engaging recess 91a and the support shaft 27a. Further, the movement in the direction orthogonal to the axial direction of the support shaft 27 a is also restricted by the hole 39 provided in the wall portion 32 of the third case 30, and the output gear 90 a is connected to the support shaft 27 a and the hole 39. The two different bearing portions prevent inclination of the support shaft 27a in the direction orthogonal to the axial direction. Further, the support shaft 27a and the hole 39 are provided with an interval in the axial direction of the support shaft 27a, and reliably prevent the output gear 90a from tilting in a direction perpendicular to the axial direction of the support shaft 27a. ing.

  Next, a method for assembling the actuator module 1a will be described. As in the above-described embodiment, the electromagnetic actuator 40 and the printed circuit board 50 are assembled to the first case 10, and after the printed circuit board 50 and the coils 48 a and 48 b are soldered, the teeth 44 are engaged with each other. The intermediate gear 60 is assembled to the support shaft 16 of the first case 10.

  Next, after the second case 20a is assembled by fitting the fitting holes 21 and 31 into the pins 11 of the first case 10, the reduction gears 70 and 80 are assembled to the support shafts 27a and 28 of the second case 20a, respectively. Further, the engaging recess 91a formed in the output gear 90a is inserted into the support shaft 27a of the second case 20a and assembled.

  Next, the pin 11 of the first case 10 is fitted into the fitting holes 21 and 31 of the third case 30, and the output shaft 96 a of the output gear 90 a is inserted into the hole 39 of the third case 30. The third case 30 is assembled to the first case 10 and the second case 20a in the assembled state. The first case 10, the second case 20 a, and the third case 30 that are assembled are applied to the concave portions 22 formed on the side surfaces of the second case 20 a by applying an adhesive to the first case 10, as in the above-described embodiment. The third case 30 and the second case 20a are bonded together.

  Next, the pinion gear 100 is fitted to the output shaft 96a. At this time, the insertion depth of the pinion gear 100 with respect to the output shaft 96a is adjusted in a state where the engagement recess 91a formed in the output gear 90a and the tip of the support shaft 27a of the second case 20a are in contact.

  As shown in FIG. 4, in the actuator module 1a which is a modification, the output gear 90a and the reduction gear 70 are rotatably supported by the same support shaft 27a. Also by this, the enlargement of the actuator module 1a in the plane direction orthogonal to the axial direction is suppressed.

  As described above, the output gear 90a is held between the wall portion 32 of the third case 30 and the tip end portion of the support shaft 27a. For this reason, the backlash of the output gear 90a is suppressed in the axial direction, and the driving sound resulting from the backlash is reduced. Further, since the output gear 90a prevents inclination in the direction orthogonal to the axial direction by two different bearing portions of the support shaft 27a and the hole 39, the driving sound due to the inclination of the output gear 90a is reduced, Furthermore, it is possible to prevent malfunction due to inclination.

  Further, as described above, the support shaft 27a and the hole 39 are provided with an interval in the axial direction of the support shaft 27a, and the inclination of the output gear 90a in the direction orthogonal to the axial direction of the support shaft 27a is ensured. Therefore, the driving sound due to the inclination of the output gear 90a is reduced, and the malfunction due to the inclination can be reliably prevented.

  As described above, the housing of the actuator module 1a houses the reduction gear 70, the output gear 90a, and the like between the first case 10 and the second case 20a that house the electromagnetic actuator 40, and the second case 20a. A third case 30 is included. Thereby, since the electromagnetic actuator 40, the reduction gear 70, the output gear 90a, etc. which comprise the actuator module 1a are accommodated in each case, the jig for fitting the pinion gear 100 to the output shaft 96a can be simply configured. Also, the assembly work for fitting the pinion gear 100 can be made efficient.

  As shown in FIGS. 1 and 2, a plurality of recesses 22 are formed on the outer surfaces of the second cases 20 and 20a. In a state where the second case 20 and 20a, the first case 10, and the third case 30 are assembled, the adhesive is stored until it is cured in the recess 22 by applying the adhesive to the recess 22. Thereby, it can prevent that an adhesive agent leaks outside from the recessed part 22 before hardening, and the assembly workability | operativity of the actuator module 1 improves.

  As shown in FIGS. 3 and 4, the intermediate gear 60 is directly meshed with the tooth portion 44 of the rotor 42, and therefore rotates faster than the other gears. For this reason, the driving sound of the intermediate gear 60 is likely to be larger than that of other gears. By disposing the intermediate gear 60 in the center between the first case 10 and the third case 30 in the axial direction, driving sound is generated outside the first case 10, the second cases 20 and 20a, and the third case 30. Is suppressed as much as possible.

  1, 3, and 4, the printed circuit board 50 is connected to the printed circuit board 50 so that the cables Ca <b> 1, Ca <b> 2, Cb <b> 1, and Cb <b> 2 do not protrude greatly from the outside of the actuator module 1. Is housed inside the housing. Thereby, the enlargement of 1 at the time of connecting cables Ca1, Ca2, Cb1, and Cb2 is suppressed.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to such specific embodiments, and modifications and changes can be made within the scope of the gist of the present invention described in the claims. Is possible.

  In the modified example of the actuator module, the step of applying the adhesive to the concave portion 22 formed on the side surface of the second case 20a and bonding the first case 10, the third case 30, and the second case 20a includes the output shaft 96a. It may be after the pinion gear 100 is fitted to the first gear.

DESCRIPTION OF SYMBOLS 1, 1a Actuator module 10 1st case 11 Pin 14, 16, 27, 27a, 28 Support shaft 15 Escape hole 15a Step part 20, 20a 2nd case 21, 31 Fitting hole 22 Recessed part 26 Escape hole 30 3rd case 32 Wall portion 39 Hole portion 40 Electromagnetic actuator 42 Rotor 43 Rotating shaft 44 Tooth portion 46 Stator 48a, 48b Coil 50 Printed circuit board 58a1, 58a2, 58b1, 58b2 Terminal portion 60 Intermediate gear 62, 72, 82, 92 Large diameter tooth portion 64, 74, 84 Small-diameter tooth portion 70, 80 Reduction gear 90, 90a Output gear 91a Engaging recess 96, 96a Output shaft 97 recess 100 Pinion gear

Claims (11)

A housing,
An actuator housed in the housing;
A reduction gear housed in the housing and to which the power of the actuator is transmitted;
An output gear housed in the housing, to which the power of the actuator is transmitted via the reduction gear, arranged coaxially with the reduction gear, and having an output shaft protruding out of the housing;
Actuator module with.   2. The actuator module according to claim 1, wherein the housing houses a printed circuit board that is electrically connected to the actuator and overlaps the reduction gear and the output gear in the axial direction. A pinion gear is fitted to the output shaft protruding outside the housing,
The actuator module according to claim 1 or 2, wherein the output gear is held so as to sandwich a wall portion of the housing between the output gear and the pinion gear.   The actuator module according to any one of claims 1 to 3, wherein the output gear has a recess that avoids contact with a support shaft that rotatably supports the reduction gear.   The actuator module according to claim 1, wherein the output gear and the reduction gear are rotatably supported on the same support shaft.   The output gear is held between the wall portion of the housing and the support shaft, the axial movement of the support shaft is restricted, and the hole portion of the housing through which the output shaft passes and the support shaft The actuator module according to claim 5, wherein movement in a direction orthogonal to the axial direction of the support shaft is restricted.   The actuator module according to claim 6, wherein the support shaft and the hole are provided with an interval in an axial direction of the support shaft.   8. The housing according to claim 1, wherein the housing includes first and second cases that house the actuator, and a third case that houses the reduction gear and the output gear between the second case. Actuator module.   The actuator module according to claim 8, wherein a concave portion capable of storing an adhesive that bonds the second case and the first and third cases is formed on an outer surface of the second case.   10. The actuator module according to claim 8, wherein an escape hole is formed in the second case to release an intermediate gear that decelerates and transmits the power of the actuator to the reduction gear.   11. The intermediate gear according to claim 8, wherein the intermediate gear directly meshes with a tooth portion of a rotor of the actuator, and is arranged at a center between the first case and the third case in the axial direction of the intermediate gear. Any actuator module.

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