JP2018088774A - Geared motor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a geared motor unit capable of stabilizing a coupling state of two geared motors even when the two geared motors are coupled with a gap.SOLUTION: A geared motor unit 1 includes a first coupling member 4 and a second coupling member for coupling two geared motors 2, 3 that are disposed with a gap. The first coupling member 4 is fixed at a front side of cases 19A, 19B, while the second coupling member is fixed behind them. With the geared motor unit 1, a projection 4c is formed on the first coupling member 4, and a recess 25a with which the projection 4c is fitted is formed on the case 19A. A projection 26c is formed on the case 19A, and a recess 4e with which the projection 26c is fitted is formed on the first coupling member 4. A projection 4d is formed on the first coupling member 4, and a recess 25a with which the projection 4d is fitted is formed on the case 19B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a geared motor unit having two geared motors connected to each other.

  Conventionally, an opening and closing device for a toilet seat toilet lid is known (see, for example, Patent Document 1). The switchgear described in Patent Document 1 includes two geared motors, a first geared motor and a second geared motor. The first geared motor and the second geared motor have the same configuration. The first geared motor and the second geared motor are connected by a connecting unit and a connecting member in a state where the first geared motor and the second geared motor are in contact with each other.

  In the switchgear described in Patent Document 1, an output shaft is attached to the first geared motor. The output shaft is attached to the output gear of the first geared motor and is rotated by the power of the first geared motor. This output shaft is connected to the toilet seat. The connection unit includes a unit output shaft, a unit input shaft, and a unit gear train. The unit output shaft is connected to the output gear of the second geared motor via the unit gear train and the unit input shaft, and is rotated by the power of the second geared motor. The unit output shaft is connected to the toilet lid. Further, the output shaft and the unit output shaft protrude in the same direction.

  The connecting unit is fixed to the first geared motor and the second geared motor by four screws. One of the four screws is inserted through a plate portion through hole that penetrates the protrusion of the connection unit, and screwed into a screw hole formed on the back side of the step portion of the case of the first geared motor. It is. The other one screw is inserted into a plate portion through hole penetrating the protrusion of the connecting unit and screwed into a screw hole formed on the back side of the step portion of the case of the second geared motor. .

JP 2014-209978 A

  In the switchgear described in Patent Document 1, the connection unit includes a unit gear train, and the distance between the shafts of the output shaft of the first geared motor and the output shaft of the second geared motor (that is, the unit output shaft) is shortened. It is possible to do. On the other hand, in the toilet seat toilet lid opening and closing device, it may be desired to increase the inter-axis distance between the output shaft of the first geared motor and the output shaft of the second geared motor.

  In this case, the output shaft similar to the output shaft mounted on the first geared motor is mounted on the second geared motor, and the first geared is opened with a gap between the first geared motor and the second geared motor. If the motor and the second geared motor are connected, the distance between the output shaft of the first geared motor and the output shaft of the second geared motor can be increased while simplifying the structure of the connecting unit. However, if a gap is formed between the first geared motor and the second geared motor, the connection state between the first geared motor and the second geared motor may become unstable.

  Then, the subject of this invention is providing the geared motor unit which can stabilize the connection state of two geared motors, even if two geared motors are connected in the state which opened the clearance gap. .

  In order to solve the above problems, the geared motor unit of the present invention includes two geared motors, a first connecting member and a second connecting member for connecting the two geared motors, A motor, a gear train that reduces and transmits the rotation of the motor, a case in which the motor and the gear train are accommodated, and an output shaft that is connected to the motor via the gear train and has one end projecting from the case, The two geared motors are connected so that the output shafts protrude in the same direction and are parallel to each other and with a gap between the two geared motors. If one geared motor case is the first case, the other geared motor case is the second case, the projecting direction side of the output shaft is the front side, and the opposite side is the rear side. The first connecting member is fixed to the front side of the first case and the second case, the second connecting member is fixed to the rear side of the first case and the second case, and the first connecting member faces the rear side. A projecting first convex part is formed, a first concave part is formed in the first case, and a first convex part is formed in the first case, and a second convex part projecting forward is formed in the first case. The first connecting member is formed with a second recess into which the second convex portion is fitted, and the first connecting member and the second case are protruded toward the other of the first connecting member and the second case. 3 convex parts are formed, The 3rd recessed part which a 3rd convex part fits is formed in either one of a 1st connection member and a 2nd case, It is characterized by the above-mentioned.

  In the geared motor unit of the present invention, the first connecting member for connecting the two geared motors is fixed to the front side of the first case and the second case, and the second connecting member for connecting the two geared motors. Is fixed to the back side of the first case and the second case. Further, in the present invention, the first convex portion is formed on the first connecting member, the first concave portion into which the first convex portion is fitted is formed in the first case, and the second convex portion is formed in the first case, The 2nd recessed part which a 2nd convex part fits is formed in the 1st connection member. Further, a third convex portion is formed on one of the first connecting member and the second case, and a third concave portion is formed on the other of the first connecting member and the second case. .

  That is, in the present invention, the convex portions (first convex portion, second convex portion) and the concave portions (first concave portion, second concave portion) into which the convex portions are fitted are formed on both the first connecting member and the first case. In addition, there are at least three fitting portions between the two geared motors and the first connecting member. Therefore, in the present invention, even if two geared motors are connected with a gap therebetween, wobbling of the two connected geared motors is suppressed by fitting portions formed at least at three locations. Is possible. Therefore, in the present invention, even if two geared motors are connected with a gap therebetween, the connected state of the two geared motors can be stabilized.

  In this invention, the 3rd convex part which protrudes toward the back side is formed in the 1st connection member, and while the 3rd recessed part is formed in the 2nd case, the 4th which protrudes toward the front side at the 2nd case It is preferable that a convex portion is formed and a fourth concave portion into which the fourth convex portion is fitted is formed in the first connecting member. If comprised in this way, a convex part (a 3rd convex part, a 4th convex part) and the recessed part (a 3rd recessed part, a 4th recessed part) in which a convex part fits are formed in both the 1st connection member and the 2nd case. In addition, since the fitting portions between the two geared motors and the first connecting member are formed at four places, wobbles of the two geared motors connected with a gap are formed at four places. It becomes possible to suppress effectively by the fitting part. Therefore, it becomes possible to stabilize the connection state of the two geared motors.

  In this invention, the 5th convex part which protrudes toward the front side is formed in the 1st case, the 6th convex part which protrudes toward the front side is formed in the 2nd case, and the 5th convex part is formed in the 1st connection member. It is preferable that the 5th recessed part into which a convex part fits and the 6th recessed part into which a 6th convex part fits are formed. If comprised in this way, it will become possible to suppress more effectively the wobble of two geared motors connected in the state where the clearance gap was opened by the fitting part formed in six places. Accordingly, it is possible to further stabilize the connection state of the two geared motors.

  In the present invention, the geared motor unit includes a first screw for fixing the first connecting member to the first case and a second screw for fixing the first connecting member to the second case, The first insertion hole through which the shaft portion of the first screw is inserted penetrates the first protrusion in the front-rear direction, and the shaft portion of the second screw is inserted into the third protrusion. It is preferable that the second insertion hole is formed so as to penetrate the third convex portion in the front-rear direction. If comprised in this way, it will become possible to suppress the shift | offset | difference of the 1st convex part with respect to a 1st recessed part with a 1st screw | thread, and the shift | offset | difference of the 3rd convex part with respect to a 3rd recessed part will be suppressed with a 2nd screw | thread. It becomes possible. Therefore, it is possible to effectively suppress the wobble of the two geared motors connected with a gap therebetween, and as a result, the connected state of the two geared motors can be further stabilized. .

  In this invention, it is preferable that a 1st connection member is provided with the spacer part arrange | positioned between two geared motors. If comprised in this way, even if the clearance gap between two geared motors becomes wide, it will become possible to stabilize the connection state of two geared motors.

  In the present invention, the second connecting member is formed in a flat plate shape, and the rear surface of the case is formed so that the arrangement concave portion in which the second connection member is arranged is depressed toward the front side. It is preferable that it is more than the thickness of 2 connection members. If comprised in this way, it will become possible to prevent the 2nd connection member jumping out from the rear surface of a case.

  In the present invention, for example, the first connecting member is made of resin, and the second connecting member is made of metal.

  As described above, in the geared motor unit of the present invention, even when two geared motors are connected with a gap therebetween, the connected state of the two geared motors can be stabilized.

It is a perspective view which shows the geared motor unit concerning embodiment of this invention from the front side. It is a perspective view which shows the geared motor unit shown in FIG. 1 from the back side. It is a perspective view of the state which removed the 1st connection member from the geared motor unit shown in FIG. It is a front view of the state which removed the front side case from the geared motor shown in FIG. It is a perspective view which shows the 1st connection member shown in FIG. 1 from the back side. It is a perspective view of the 2nd connection member shown in FIG. It is a perspective view which shows the 1st connection member concerning other embodiment of this invention from the back side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Overall configuration of geared motor unit)
FIG. 1 is a perspective view showing a geared motor unit 1 according to an embodiment of the present invention from the front side. FIG. 2 is a perspective view showing the geared motor unit 1 shown in FIG. 1 from the back side.

  The geared motor unit 1 of the present embodiment is an automatic opening / closing device that opens and closes a toilet seat and a toilet lid of a Western-style toilet. Therefore, hereinafter, the geared motor unit 1 of this embodiment is referred to as an “automatic opening / closing device 1”. The automatic opening / closing device 1 includes two geared motors 2 and 3 and connecting members 4 and 5 for connecting the two geared motors 2 and 3. In this embodiment, for example, the geared motor 2 is used for opening and closing the toilet lid, and the geared motor 3 is used for opening and closing the toilet seat. Moreover, the connection member 4 of this form is a 1st connection member, and the connection member 5 is a 2nd connection member.

  In the following description, the three directions orthogonal to each other are referred to as “front-rear direction”, “left-right direction”, and “vertical direction”. Also, the X1 direction side in FIG. 1 or the like which is one side in the front-rear direction is the “front” side, the X2 direction side which is the opposite side is the “rear” side, and Y1 in FIG. The direction side is the “right” side, the opposite Y2 direction side is the “left” side, and the Z1 direction side in FIG. The Z2 direction side is the “lower” side.

  The geared motor 2 and the geared motor 3 have the same configuration. That is, the geared motor 2 and the geared motor 3 are composed of the same parts, and the shape of the geared motor 2 and the shape of the geared motor 3 are the same. The geared motor 2 and the geared motor 3 are arranged so as to be adjacent in the left-right direction. In this embodiment, the geared motor 2 is disposed on the right side, and the geared motor 3 is disposed on the left side. Moreover, the geared motor 2 and the geared motor 3 are arrange | positioned in the state shifted | deviated to the up-down direction. Specifically, the geared motor 2 is disposed slightly above the geared motor 3.

  The geared motor 2 and the geared motor 3 are connected with a gap therebetween. That is, the geared motor 2 and the geared motor 3 are connected with a gap between the geared motor 2 and the geared motor 3 in the left-right direction. The connecting member 4 is disposed on the front side, and the connecting member 5 is disposed on the rear side. The connecting member 4 is fixed to the geared motors 2 and 3 by four screws 7 to 10, and the connecting member 5 is fixed to the geared motors 2 and 3 by three screws 11 to 13.

(Configuration of geared motor)
FIG. 3 is a perspective view of the automatic opening / closing device 1 shown in FIG. 1 with the connecting member 4 removed. FIG. 4 is a front view of the geared motors 2 and 3 shown in FIG. 3 with the front case 23 removed.

  As described above, the geared motor 2 and the geared motor 3 have the same configuration. The geared motors 2 and 3 include a motor 17, a gear train 18 that transmits the rotation of the motor 17 at a reduced speed, and a case 19 in which the motor 17 and the gear train 18 are accommodated. The geared motors 2 and 3 include an output shaft 20 connected to the motor 17 through a gear train 18. The gear train 18 includes an output gear 21 disposed on the most output side in the power transmission path of the motor 17. The output shaft 20 is attached to the output gear 21.

  The output shaft 20 is disposed so that the axial direction of the output shaft 20 matches the front-rear direction. Further, the front end side of the output shaft 20 protrudes from the case 19 to the front side. That is, the front side is the protruding direction side of the output shaft 20. Further, the front end side of the output shaft 20 protrudes from the upper end portion of the case 19 to the front side. The geared motor 2 and the geared motor 3 are connected so that the output shaft 20 of the geared motor 2 and the output shaft 20 of the geared motor 3 protrude in the same direction (that is, the front direction) and are parallel to each other.

  The case 19 includes a front case 23 and a back case 24 that are divided in the front-rear direction. The front case 23 is disposed on the front side, and the back case 24 is disposed on the rear side. The front case 23 is formed in a box shape with an open rear side, and the back case 24 is formed in a box shape with an open front side. When the front case 23 and the back case 24 are combined in the front-rear direction, the case 19 is formed. The front case 23 and the back case 24 are made of resin.

  The front case 23 includes a cover member 25 that forms a part of the front surface of the front case 23, and a case body 26 that forms a part other than the cover member 25 of the front case 23. The cover member 25 constitutes a lower part of the front surface of the front case 23. The case body 26 includes a front surface portion 26 a that forms an upper portion of the front surface of the front case 23, and a cylindrical side surface portion 26 b that forms a side surface of the front case 23.

  A recess 25 a is formed on the upper right end side of the cover member 25. The recess 25 a is formed so as to be recessed from the front surface of the cover member 25 toward the rear side. Further, the recess 25 a communicates with the right end of the cover member 25. That is, a concave portion 25 a that opens on the front side and the right side is formed on the upper right end side of the cover member 25. On the lower side of the concave portion 25a of the cover member 25, a concave portion 25b having an opening on the front side and the right side is also formed. A recess 25 c is also formed in the lower left corner of the cover member 25.

  The shape of the recess 25a when viewed from the front-rear direction is substantially U-shaped. Specifically, the upper and lower side surfaces of the concave portion 25a are planes orthogonal to the vertical direction, and the left side surface of the concave portion 25a is a concave curved surface having a semicircular shape when viewed from the front-rear direction. Yes. The rear surface of the recess 25a is a plane orthogonal to the front-rear direction. An insertion hole 25d through which the shaft portion of the screws 7 and 8 is inserted is formed on the rear surface of the recess 25a. The insertion hole 25d is a round hole that penetrates the cover member 25 in the front-rear direction. Further, the rear surfaces of the recesses 25b and 25c are also flat surfaces orthogonal to the front-rear direction.

  An insertion hole through which the output shaft 20 is inserted is formed at the approximate center of the front surface portion 26 a of the case body 26. This insertion hole penetrates the front surface part 26a in the front-rear direction. The front surface portion 26a is formed with two convex portions (bosses) 26c and 26d that protrude toward the front side and one screw hole 26e.

  The convex portions 26c and 26d are formed in a columnar shape. The convex portion 26c is formed at the lower end portion of the front surface portion 26a and is formed at a substantially central position of the front surface portion 26a in the left-right direction. The convex portion 26d is formed on the upper right side of the convex portion 26c. Further, the convex portion 26 c is disposed below the output shaft 20, and the convex portion 26 d is disposed on the right side of the output shaft 20. The outer diameter of the convex part 26c is larger than the outer diameter of the convex part 26d. The height of the convex portion 26c (the amount of protrusion to the front side) is substantially equal to the height of the convex portion 26d.

  The screw hole 26e is formed below the convex portion 26d. The screw hole 26e is formed in the vicinity of the convex portion 26d. On the lower left side of the front surface portion 26a, a concave portion 26f is formed that is recessed from the front surface of the front surface portion 26a toward the rear side. The concave portion 26f leads to the left end of the front surface portion 26a, and the front side and the left side of the concave portion 26f are open. The rear surface of the recess 26f is a plane orthogonal to the front-rear direction.

  As shown in FIG. 2, two recesses 24 a and 24 b that are slightly recessed toward the front side are formed on the rear surface of the back case 24. The recess 24 a is formed on the right end side of the rear surface of the back case 24, and the recess 24 b is formed on the left end side of the rear surface of the back case 24. The recess 24 a communicates with the right end of the back case 24. The recess 24 b communicates with the left end of the back case 24. The concave portion 24a and the concave portion 24b are disposed at substantially the same position in the vertical direction. The amount of depression of the recess 24a is equal to the amount of depression of the recess 24b.

  The shapes of the recesses 24a and 24b when viewed from the front-rear direction are substantially rectangular with the vertical direction as the long side direction. The front surfaces of the recesses 24a and 24b are flat surfaces orthogonal to the front-rear direction. A screw hole 24c is formed on the lower end side of the front surface of the recess 24a. A screw hole 24d is formed on the upper end side of the front surface of the recess 24b, and a screw hole 24e is formed on the lower end side of the front surface of the recess 24b.

  The screw hole 24d and the screw hole 24e are formed at substantially the same position in the left-right direction. The screw hole 24c and the screw hole 24e are formed at substantially the same position in the vertical direction. As will be described later, the connecting member 5 is disposed in the recess 24 b of the geared motor 2 and the recess 24 a of the geared motor 3. In this embodiment, the recesses 24a and 24b are arrangement recesses in which the connecting member 5 is disposed.

  The front case 23 and the back case 24 are fixed by three screws 27. The front case 23 is formed with an insertion hole (not shown) through which the shaft portion of the screw 27 is inserted. Specifically, an insertion hole is formed in the front case 23 on the rear side of the recesses 25b, 25c, and 26f. This insertion hole is a round hole that penetrates the front case 23 in the front-rear direction. Further, the rear case 24 is formed with a screw hole 24f into which the tip end side of the shaft portion of the screw 27 is screwed (see FIG. 4).

  The head of the screw 27 is disposed in the recesses 25b, 25c, and 26f. Screws 27 whose heads are arranged in the recesses 25b and 25c fix the cover member 25, the case body 26, and the back case 24. A screw 27 whose head is disposed in the recess 26 f fixes the case body 26 and the back case 24.

  The screws 7 and 8 for fixing the connecting member 4 to the geared motors 2 and 3 also serve to fix the cover member 25, the case body 26, and the back case 24. The case body 26 is formed with an insertion hole (not shown) through which the screws 7 and 8 are inserted. This insertion hole is formed on the back side of the insertion hole 25d of the cover member 26, and is a round hole that penetrates the case main body 26 in the front-rear direction. Further, the back case 24 is formed with a screw hole 24g into which the distal end side of the shaft portion of the screws 7 and 8 is screwed (see FIG. 4).

(Structure of connecting member)
FIG. 5 is a perspective view showing the connecting member 4 shown in FIG. 1 from the back side. 6 is a perspective view of the connecting member 5 shown in FIG.

  The connecting member 4 is made of resin. Moreover, the connection member 4 is formed in a substantially flat plate shape. The connecting member 4 is arranged so that the thickness direction of the connecting member 4 formed in a substantially flat plate shape coincides with the front-rear direction. The connecting member 4 is fixed to the front side of the case 19 of the geared motors 2 and 3. Specifically, the connecting member 4 is fixed to the front surface of the upper end portion of the case 19 of the geared motor 2 or 3. The rear surface of the connecting member 4 is in contact with the front surface of the case 19.

  A notch 4 a for preventing interference between the output shaft 20 of the geared motor 2 and the connecting member 4 is formed on the upper right end side of the connecting member 4. A cutout portion 4 b for preventing interference between the output shaft 20 of the geared motor 3 and the connecting member 4 is formed at the upper left end of the connecting member 4. In the following description, when the case 19 of the geared motor 2 and the case 19 of the geared motor 3 are distinguished from each other, the case 19 of the geared motor 2 is referred to as “case 19A”, and the case 19 of the geared motor 3 is referred to as “case”. 19B ".

  The lower end surface of the right side portion of the connecting member 4 disposed on the front side of the case 19A is disposed above the lower end surface of the left side portion of the connecting member 4 disposed on the front side of the case 19B. The connecting member 4 is formed with two convex portions 4c and 4d that protrude toward the rear side. That is, the connecting member 4 is formed with convex portions 4 c and 4 d that protrude from the rear surface of the connecting member 4 toward the case 19. The convex portion 4c is fitted in the concave portion 25a of the case 19A. The convex portion 4d is fitted in the concave portion 25a of the case 19B.

  Further, the connecting member 4 includes a recess 4e into which the convex portion 26c of the case 19A is fitted, a concave portion 4f into which the convex portion 26c of the case 19B is fitted, a concave portion 4g into which the convex portion 26d of the case 19A is fitted, and a concave portion 26d of the case 19B. A fitting recess 4h is formed. Further, the connecting member 4 is formed with two insertion holes 4j through which the shaft portions of the screws 9 and 10 are inserted. A reinforcing rib 4k is formed on the front surface of the connecting member 4. The rib 4k is formed at a position avoiding the convex portions 4c and 4d, the concave portions 4e to 4h and the insertion hole 4j. Note that the rib 4k may not be formed.

  The convex portion 4 c is formed on the lower right side of the connecting member 4. The protrusion 4c is formed with an insertion hole 4p through which the shaft portion of the screw 7 is inserted. The insertion hole 4p is a round hole that penetrates the convex portion 4c in the front-rear direction. The outer shape of the convex portion 4c when viewed from the front-rear direction is substantially U-shaped. Specifically, the right side surface of the convex portion 4c is a plane orthogonal to the left-right direction, and the upper and lower side surfaces of the convex portion 4c are planes orthogonal to the vertical direction. In addition, the left side surface of the convex portion 4c is a convex curved surface having a semicircular shape when viewed from the front-rear direction. The vertical width of the convex portion 4c is slightly smaller than the vertical width of the concave portion 25a.

  The convex portion 4 d is formed on the lower end side of the connecting member 4. Moreover, the convex part 4d is formed in the center part of the connection member 4 in the left-right direction. The projection 4d is formed with an insertion hole 4q through which the shaft portion of the screw 8 is inserted. The insertion hole 4q is a round hole that penetrates the convex portion 4d in the front-rear direction. The outer shape of the convex portion 4d when viewed from the front-rear direction is circular. That is, the convex portion 4d is formed in a cylindrical shape. The outer diameter of the convex portion 4d is slightly smaller than the vertical width of the concave portion 25a.

  The recesses 4e to 4h are round holes that penetrate the connecting member 4 in the front-rear direction. The inner diameter of the recess 4e is equal to the inner diameter of the recess 4f. Further, the inner diameter of the recess 4g is equal to the inner diameter of the recess 4h. The inner diameters of the recesses 4e and 4f are larger than the inner diameters of the recesses 4g and 4h. The inner diameters of the concave portions 4e and 4f are substantially equal to the outer diameter of the convex portion 26c. The inner diameters of the concave portions 4g and 4h are substantially equal to the outer diameter of the convex portion 26d.

  The concave portion 4e is formed on the left side of the convex portion 4c, and the concave portion 4f is formed on the left side of the convex portion 4d. The concave portion 4g is formed on the upper left side of the convex portion 4c, and the concave portion 4h is formed on the upper left side of the convex portion 4d. Moreover, the recessed part 4g is formed in the right side of the notch part 4a, and the recessed part 4h is formed in the right side of the notch part 4b. Each of the two insertion holes 4j is formed on the lower right side of each of the recesses 4g and 4h.

  The case 19A of this embodiment is a first case, and the case 19B is a second case. Further, the convex portion 4c of this embodiment is a first convex portion, the concave portion 25a of the case 19A is a first concave portion, the convex portion 26c of the case 19A is a second convex portion, and the concave portion 4e is a first concave portion. 2 recesses. The convex portion 4d is a third convex portion, the concave portion 25a of the case 19B is a third concave portion, the convex portion 26c of the case 19B is a fourth convex portion, and the concave portion 4f is a fourth concave portion. is there.

  Further, the convex portion 26d of the case 19A is a fifth convex portion, the convex portion 26d of the case 19B is a sixth convex portion, the concave portion 4g is a fifth concave portion, and the concave portion 4h is a sixth concave portion. is there. Moreover, the screw 7 of this embodiment is a first screw for fixing the connecting member 4 to the case 19A, and the screw 8 is a second screw for fixing the connecting member 4 to the case 19B, and the insertion hole 4p. Is a first insertion hole, and the insertion hole 4q is a second insertion hole.

  The connecting member 5 is made of metal. The connecting member 5 is formed in a flat plate shape. The connecting member 5 is disposed so that the thickness direction of the connecting member 5 formed in a flat plate shape coincides with the front-rear direction. The connecting member 5 is fixed to the rear side of the case 19 of the geared motors 2 and 3. Specifically, the connecting member 5 is disposed and fixed in the recess 24b of the case 19A and the recess 24a of the case 19B. The front surface of the connecting member 5 is in contact with the front surface of the recess 24b of the case 19A and the front surface of the recess 24a of the case 19B. The thickness of the connecting member 5 is equal to or less than the recesses of the recesses 24a and 24b. That is, the amount of depression of the recesses 24 a and 24 b is equal to or greater than the thickness of the connecting member 5.

  The connecting member 5 connects the rectangular arrangement part 5a arranged in the concave part 24b of the case 19A, the rectangular arrangement part 5b arranged in the concave part 24a of the case 19B, and the arrangement part 5a and the arrangement part 5b. Part 5c. The upper end of the arrangement part 5a is arranged above the upper end of the arrangement part 5b, and the lower end of the arrangement part 5b is arranged above the lower end of the arrangement part 5b. The connection part 5c has connected the upper end side of the arrangement | positioning part 5a, and the lower end side of the arrangement | positioning part 5b.

  The placement portion 5 a is formed with an insertion hole 5 d through which the shaft portion of the screw 12 is inserted and an insertion hole 5 e through which the shaft portion of the screw 13 is inserted. The insertion hole 5d is formed on the upper end side of the arrangement portion 5a, and the insertion hole 5e is formed on the lower end side of the arrangement portion 5a. The arrangement portion 5b is formed with an insertion hole 5f in which the shaft portion of the screw 11 is arranged. The insertion hole 5f is formed on the lower end side of the arrangement portion 5b. The insertion holes 5d to 5f are round holes that penetrate the connecting member 5 in the front-rear direction.

  In the connecting member 4, the convex part 4c fits into the concave part 25a of the case 19A, the convex part 4d fits into the concave part 25a of the case 19B, the convex part 26c of the case 19A fits into the concave part 4e, and the convex part 26c of the case 19B fits into the concave part 4f. In the state where the convex portion 26d of the case 19A is fitted in the concave portion 4g and the concave portion 26d of the case 19B is fitted in the concave portion 4h, the case 19A is fixed to the cases 19A and 19B by four screws 7-10. The tip end side of the shaft portion of the screw 7 is screwed into the screw hole 24g of the case 19A, and the tip end side of the shaft portion of the screw 8 is screwed into the screw hole 24g of the case 19B. The tip end side of the shaft portion of the screw 9 is screwed into the screw hole 26e of the case 19A, and the tip end side of the shaft portion of the screw 10 is screwed into the screw hole 26e of the case 19B.

  Further, the connecting member 5 is fixed to the cases 19A and 19B by three screws 11 to 13 in a state where the connecting member 5 is disposed in the recess 24b of the case 19A and the recess 24a of the case 19B. The distal end side of the shaft portion of the screw 11 is screwed into the screw hole 24c of the case 19B, the distal end side of the shaft portion of the screw 12 is screwed into the screw hole 24d of the case 19A, and the distal end side of the shaft portion of the screw 13 is It is screwed into the screw hole 24e of the case 19A.

  In this embodiment, the inter-axis distance between the output shaft 20 of the geared motor 2 and the output shaft 20 of the geared motor 3 is mainly defined by the connecting member 4. In this embodiment, the connecting member 4 and the connecting member 5 fulfill the function of ensuring the parallelism between the output shaft 20 of the geared motor 2 and the output shaft 20 of the geared motor 3.

(Main effects of this form)
As described above, in this embodiment, the connecting member 4 is fixed to the front side of the cases 19A and 19B, and the connecting member 5 is fixed to the rear side of the cases 19A and 19B. In this embodiment, the convex portion 4c of the connecting member 4 fits into the concave portion 25a of the case 19A, the convex portion 4d of the connecting member 4 fits into the concave portion 25a of the case 19B, and the convex portion 26c of the case 19A fits into the concave portion of the connecting member 4. 4e, the convex portion 26c of the case 19B fits into the concave portion 4f of the connecting member 4, the convex portion 26d of the case 19A fits into the concave portion 4g of the connecting member 4, and the concave portion 26d of the case 19B fits into the concave portion 4h of the connecting member 4. In this state, the connecting member 4 is fixed to the cases 19A and 19B with screws 7 to 10.

  That is, in the automatic opening / closing device 1 of this embodiment, the convex portions 4c, 4d, 26c, 26d and the concave portions 4e-4h, 25a into which the convex portions 4c, 4d, 26c, 26d are fitted are provided on both the connecting member 4 and the case 19. At the same time, the fitting portions between the two cases 19 and the connecting member 4 are formed at six locations. Therefore, in this embodiment, even if the geared motor 2 and the geared motor 3 are connected with a gap therebetween, wobbling of the connected geared motors 2 and 3 is suppressed by the fitting portions formed at six locations. It becomes possible to do. Therefore, in this embodiment, even if the geared motor 2 and the geared motor 3 are connected with a gap therebetween, the connected state of the two geared motors 2 and 3 can be stabilized.

  In this embodiment, the insertion hole 4p is formed in the convex part 4c that fits into the concave part 25a of the case 19A, and the shaft part of the screw 7 for fixing the connecting member 4 to the case 19A is inserted into the insertion hole 4p. Moreover, the insertion hole 4q is formed in the convex part 4d which fits into the concave part 25a of the case 19B, and the shaft part of the screw 8 for fixing the connecting member 4 to the case 19B is inserted into the insertion hole 4q. Therefore, in this embodiment, it is possible to suppress the deviation of the convex portion 4c with respect to the concave portion 25a of the case 19A with the screw 7, and it is possible to suppress the deviation of the convex portion 4d with respect to the concave portion 25a of the case 19B with the screw 8. become. Therefore, in this embodiment, it becomes possible to effectively suppress the wobble of the two geared motors 2 and 3 connected with a gap therebetween, and as a result, the two geared motors 2 and 3 are connected. It becomes possible to make the state more stable.

  In this embodiment, the amount of depression of the recesses 24 a and 24 b where the connecting member 5 is disposed is equal to or greater than the thickness of the connecting member 5. Therefore, in this embodiment, it is possible to prevent the connecting member 5 from jumping out from the rear surface of the case 19. In this embodiment, since the connecting member 5 is fixed to the cases 19A and 19B by the three screws 11 to 13, the connecting member 5 is formed in a flat plate shape even when an external force is applied to the automatic opening / closing device 1. Can be suppressed.

(Other embodiments)
The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited to this, and various modifications can be made without departing from the scope of the present invention.

  In the embodiment described above, when the gap between the geared motor 2 and the geared motor 3 in the left-right direction is wide, the spacer 4t disposed between the geared motor 2 and the geared motor 3 as shown in FIG. May be formed on the connecting member 4. The spacer portion 4t is formed in, for example, a rectangular flat plate shape, and is arranged so that the thickness direction of the spacer portion 4t and the left-right direction coincide with each other. The spacer portion 4t is formed to extend from the rear surface of the connecting member 4 to the rear side. The right surface of the spacer portion 4t is in contact with the left side surface of the case 19A, and the left surface of the spacer portion 4t is in contact with the right side surface of the case 19B.

  In this case, even if the gap between the geared motor 2 and the geared motor 3 is wide, two gearings are used by utilizing the spacer portion 4t disposed between the geared motor 2 and the geared motor 3. The connected state of the motors 2 and 3 can be stabilized. A gap may be formed between the left side surface of the case 19A and the right side surface of the spacer portion 4t, or a gap may be formed between the right side surface of the case 19B and the left surface of the spacer portion 4t. .

  In the embodiment described above, either or both of the convex portion 26c and the convex portion 26d may not be formed on the case 19B. When the convex part 26d is formed in the case 19B and the convex part 26c is not formed, the convex part 26d of the case 19B becomes the fourth convex part, and the concave part 4h becomes the fourth concave part. Further, when either one of the convex portion 26 c and the convex portion 26 d is formed on the case 19 </ b> B, the convex portion 4 d may not be formed on the connecting member 4. In this case, the convex portion 26c or the convex portion 26d formed on the case 19B becomes the third convex portion, and the concave portion 4f or the concave portion 4h becomes the third concave portion.

  Moreover, in the form mentioned above, either one or both of the convex part 26c and the convex part 26d do not need to be formed in case 19A. When the convex portion 26d is formed on the case 19A and the convex portion 26c is not formed, the convex portion 26d of the case 19A becomes the second convex portion, and the concave portion 4g becomes the second concave portion. In addition, when either one of the convex portion 26 c and the convex portion 26 d is formed on the case 19 </ b> A, the convex portion 4 c may not be formed on the connecting member 4.

  When both the convex portion 26c and the convex portion 26d are not formed on the case 19A, or one of the convex portion 26c and the convex portion 26d is formed on the case 19A and the convex portion 4c is formed on the connecting member 4. If not, the case 19A becomes the second case, and the case 19B becomes the first case. In this case, the convex portion 4d is the first convex portion, the concave portion 25a of the case 19B is the first concave portion, the convex portion 26c or the convex portion 26d of the case 19B is the second convex portion, and the concave portion 4f or the concave portion 4g is the first convex portion. The convex portion 26c, convex portion 26d or convex portion 4c of the case 19A becomes the third convex portion, the concave portion 4e, the concave portion 4g or the concave portion 25a of the case 19A becomes the third concave portion, and the screw 8 becomes the first screw. The screw 7 becomes the second screw.

  In the embodiment described above, the connecting member 4 is fixed to the cases 19A and 19B with the four screws 7 to 11, but the connecting member 4 is fixed to the cases 19A and 19B with two or three screws. Alternatively, it may be fixed to the cases 19A and 19B with five or more screws. However, in order to stabilize the connection state of the two geared motors 2 and 3, it is preferable that the gears are fixed to the cases 19A and 19B with three or more screws.

  In the embodiment described above, the insertion hole through which the shaft portion of the screw 7 is inserted may be formed at a position away from the convex portion 4c, or the insertion hole through which the shaft portion of the screw 8 is inserted is detached from the convex portion 4d. It may be formed at a different position. Moreover, in the form mentioned above, the amount of depressions of the recesses 24 a and 24 b may be smaller than the thickness of the connecting member 5. Further, in the embodiment described above, the recesses 24 a and 24 b may not be formed on the rear surface of the back case 24.

  In the embodiment described above, a screw hole may be formed on the upper end side of the front surface of the recess 24a, and an insertion hole through which the shaft portion of the screw is inserted may be formed on the upper end side of the arrangement portion 5b of the connecting member 5. In this case, the connecting member 5 is fixed to the case 19B by a screw in which the shaft portion is inserted into the insertion hole on the upper end side of the arrangement portion 5b and the tip end side of the shaft portion is screwed into the screw hole on the upper end side of the recess 24a. Also good. In this case, the connecting member 5 may be fixed to the cases 19 </ b> A and 19 </ b> B with the screw and the screw 13.

  In the embodiment described above, the connecting member 4 may be formed of a material other than a resin such as a metal. Moreover, in the form mentioned above, the connection member 5 may be formed with materials other than metals, such as resin. Moreover, in the form mentioned above, although the geared motor 2 and the geared motor 3 have shifted | deviated in the up-down direction, the geared motor 2 and the geared motor 3 may correspond in the up-down direction.

  In the embodiment described above, the configuration of the geared motor 2 and the configuration of the geared motor 3 may be slightly different. In the above-described embodiment, the geared motor unit 1 is an automatic opening / closing device that opens and closes the toilet seat and the toilet lid of the Western-style toilet. The geared motor unit 1 is an automatic opening / closing device that opens and closes things other than the toilet seat toilet lid. There may be. The geared motor unit 1 may be used as a device other than the automatic opening / closing device.

1 Automatic switchgear (geared motor unit)
2, 3 Geared motor 4 Connecting member (first connecting member)
4c Convex part (first convex part)
4d convex part (third convex part)
4e recess (second recess)
4f recess (fourth recess)
4g recess (fifth recess)
4h recess (sixth recess)
4p insertion hole (first insertion hole)
4q insertion hole (second insertion hole)
4t spacer part 5 connecting member (second connecting member)
7 Screw (1st screw)
8 Screw (2nd screw)
17 Motor 18 Gear train 19 Case 19A 1st case 19B 2nd case 20 Output shaft 24a, 24b Recessed portion (arrangement recessed portion)
25a recess (first recess, third recess)
26c Convex part (second convex part, fourth convex part)
26d convex part (fifth convex part, sixth convex part)
X1 front side X2 rear side

Claims (7)

Two geared motors, and a first connecting member and a second connecting member for connecting the two geared motors,
The geared motor includes a motor, a gear train that transmits the rotation of the motor at a reduced speed, a case that accommodates the motor and the gear train, and one end side that is coupled to the motor via the gear train. An output shaft protruding from the case,
The two geared motors are connected so that the output shaft protrudes in the same direction and is parallel to each other, with a gap between the two geared motors,
The case of one of the two geared motors is the first case, the case of the other geared motor is the second case, and the protruding direction side of the output shaft is the front side, and vice versa. If the side is the back side,
The first connecting member is fixed to the front side of the first case and the second case,
The second connecting member is fixed to the rear side of the first case and the second case,
The first connecting member is formed with a first convex portion projecting rearward, the first case is formed with a first concave portion into which the first convex portion is fitted, and the first case is provided with: A second convex part protruding toward the front side is formed, and a second concave part into which the second convex part is fitted is formed in the first connecting member,
Either one of the first connecting member and the second case is formed with a third convex portion that protrudes toward the other of the first connecting member and the second case, and the first connecting member and the second case A geared motor unit, wherein a third concave portion into which the third convex portion is fitted is formed in either one of the second cases.   The first connecting member is formed with the third convex portion protruding rearward, the second case is formed with the third concave portion, and the second case protrudes toward the front side. 4. The geared motor unit according to claim 1, wherein four convex portions are formed, and a fourth concave portion into which the fourth convex portion is fitted is formed in the first connecting member. The first case is formed with a fifth protrusion protruding toward the front side,
The second case is formed with a sixth protrusion protruding toward the front side,
The geared motor unit according to claim 2, wherein the first connecting member is formed with a fifth concave portion into which the fifth convex portion is fitted and a sixth concave portion into which the sixth convex portion is fitted. A first screw for fixing the first connecting member to the first case; and a second screw for fixing the first connecting member to the second case;
In the first convex portion, a first insertion hole through which the shaft portion of the first screw is inserted is formed so as to penetrate the first convex portion in the front-rear direction.
The second projection hole, through which the shaft portion of the second screw is inserted, is formed in the third projection so as to penetrate the third projection in the front-rear direction. 3. The geared motor unit according to 3.   The geared motor unit according to any one of claims 1 to 4, wherein the first connecting member includes a spacer portion disposed between the two geared motors. The second connecting member is formed in a flat plate shape,
On the rear surface of the case, an arrangement recess in which the second connecting member is arranged is formed to be depressed toward the front side,
The geared motor unit according to any one of claims 1 to 5, wherein an amount of depression of the arrangement recess is equal to or greater than a thickness of the second connecting member.   The geared motor unit according to any one of claims 1 to 6, wherein the first connecting member is made of resin, and the second connecting member is made of metal.

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