JP7130371B2 - drive with clutch - Google Patents

Description

TECHNICAL FIELD The present invention relates to a driving device with a clutch used for opening and closing a damper of a ventilation fan.

As this type of clutch-equipped driving device, there is a device described in Japanese Unexamined Patent Application Publication No. 2002-200012. This device includes an output shaft that rotates around the shaft to which power is transmitted from a motor to perform an external action, a clutch that disconnects and connects transmission of the rotation of the motor to the output shaft, and the clutch. A solenoid for performing disconnection and connection operations, and a housing containing the motor, the output shaft, the clutch and the solenoid.

In the above conventional device, the solenoid is held by three holding portions (positions 56) and fixed to the housing. Specifically, the solenoid is provided with holding fitting portions at three locations, the housing is provided with holding engaged portions at three locations, and the solenoid is provided with the holding fitting portions at three locations. The solenoid is held in the housing by means of a snap-fit structure in which the parts are fitted into the holding fitting parts at three locations of the housing.
A connection fitting provided for establishing electrical connection with the solenoid and the motor is attached to a mounting portion provided at a location different from the holding portion within the housing.

JP 2010-242770 A

In the conventional device, the solenoid is held in the housing by a snap-fit structure with three holding portions. Therefore, the positions of the holding fitting portions provided at the three positions of the solenoid and the holding engaged portions provided at the three positions of the housing have high positional accuracy so that they can be fitted without distortion. must be made with However, it is not easy to form the three fitting portions and the three to-be-fitted portions with high positional accuracy. As a result, the three fitting portions and the three to-be-fitted portions may be fitted in a distorted state. There is a problem that the part and the part to be fitted) become fragile.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a drive device with a clutch in which a holding portion that holds a solenoid in a housing is hard to break.

In order to solve the above-described problems, a drive device with a clutch according to a first aspect of the present invention includes a motor, an output shaft that rotates around the shaft to which power is transmitted from the motor, and performs an operation with respect to the outside; a clutch for disconnecting and connecting transmission of the rotation of the motor to the output shaft, a solenoid for executing the disengagement and connection operations of the clutch, and a housing for housing the motor, the output shaft, the clutch and the solenoid wherein the housing is provided with a first rib, and the first rib is positioned at a position different from the holding portion with respect to the solenoid held by the holding portion of the housing. A first connection fitting provided in the first connection fitting which serves as another holding portion for the held solenoid and has a first connection portion to which one end of the coil of the solenoid is electrically connected characterized by being mounted.

Here, the ``other holding portion'' in ``another holding portion for the solenoid'' means that the basic role is to support the above-mentioned ``holding portion''. Therefore, the "other holding part" has a holding force smaller than that of the "holding part", and the holding structure is different from the snap-fit structure, and is based on a simple contact structure.

According to this aspect, the first rib serves to hold the solenoid held by the holding portion in the housing as "another holding portion" separate from the "holding portion". there is Therefore, by providing such another holding portion (first rib), the holding portion that creates a state in which the solenoid is held in the housing can Since it becomes possible to design, a simple structure can be adopted. In other words, it is possible to employ a simple structure in which, for example, two holding portions hold the solenoid.
As a result, the holding portion that holds the solenoid in the housing is less likely to be subjected to excessive force such as distortion, and the holding portion is less likely to break.

A drive device with a clutch according to a second aspect of the present invention is, in the first aspect, characterized in that it comprises a first lead wire and a second lead wire for supplying power to the coil of the motor and the coil of the solenoid. .

In a clutch-equipped drive device having the first lead wire and the second lead wire, part of the lead wire or another lead wire for connection may be routed inside the housing.
According to this aspect, since the space created by the dual-purpose structure of the first rib can be used as a place for arranging the lead wire in the housing, the drive device with a clutch provided with the lead wire can be made compact as a whole. can do.

A drive device with a clutch according to a third aspect of the present invention is characterized in that, in the first aspect or the second aspect, the first connection fitting is press-fitted into the first rib for attachment.

According to this aspect, since the first connection metal fitting is press-fitted into the first rib to be mounted, the work for mounting the first connection metal fitting is easy.

A fourth aspect of the present invention is a driving device with a clutch, in any one of the first to third aspects, wherein the number of holding portions is two and the number of other holding portions is one. It is characterized by

According to this aspect, since there are two holding portions, it becomes easier to attach the solenoid to the housing compared to the conventional three holding portions (snap-fit structure). In addition, since there is only one other holding portion, and the solenoid held by the holding portion is held, the structure is simplified and the work of mounting the solenoid to the housing is facilitated. becomes possible.

According to a fifth aspect of the drive device with a clutch of the present invention, in the fourth aspect, the holding portion holds the solenoid with a snap-fit structure, and the other holding portion is attached to the side surface of the held solenoid. It is characterized by being arranged along.
Here, the "snap-fit structure" means a structure in which, when pushed against an elastic force, the pushed-in position is pressed by the part that exerted the elastic force and is held at the position. In addition, "arranged along the side surface of the held solenoid" does not mean a fitting structure such as the snap-fit structure, but a simple structure in which the solenoid is in contact with the solenoid. means.

According to this aspect, the holding portion has a two-place snap-fit structure, and the other holding portion has a single-place structure and is arranged along the side surface of the held solenoid. . Therefore, the "holding portion" of the two-place snap-fit structure makes it easier to attach the solenoid to the housing than the conventional three-place holding portion (snap-fit structure).
Further, since the "other holding part" is simply disposed along the side surface of the solenoid that is firmly held as described above, the "other holding part" is connected to the first connection. It becomes easy to design for mounting the metal fittings, and it is also easy to manufacture.

A drive device with a clutch according to a sixth aspect of the present invention is the fifth aspect, wherein the holding portion is a pair of a first holding portion and a second holding portion that sandwich and hold the solenoid from both sides in a plan view. and the other holding portion is positioned in a direction intersecting a direction formed by a line connecting the first holding portion and the second holding portion.

According to this aspect, the holding portion is composed of a pair of a first holding portion and a second holding portion that sandwich and hold the solenoid from both sides, and the other holding portion comprises the first holding portion and the second holding portion. It is positioned in a direction that intersects with the direction formed by the line connecting the two holding portions. Therefore, even if the "another holding part" has a simple structure, it is possible to press and hold the solenoid by the relative arrangement of the three parts.

A seventh aspect of the present invention is a driving device with a clutch, in any one of the first aspect to the sixth aspect, wherein the first rib is provided at one end of the coil of the held solenoid. It is characterized in that it is provided at a position corresponding to the position of the part.

According to this aspect, the first rib is provided at a position corresponding to the position of one end of the coil of the held solenoid. Therefore, it becomes easy to realize a compact drive device with a clutch. In addition, since the distance between the end of the coil of the solenoid and the first connection portion of the first connection fitting is shortened, the soldering work is facilitated.

According to an eighth aspect of the present invention, in any one aspect of the first aspect to the seventh aspect, the clutch-equipped driving device according to the present invention is characterized in that the first connecting fitting attached to the first rib has a first An elastic switch piece is electrically connected, and a second elastic switch piece is electrically connected to one end of the coil of the motor, which can take an ON state in contact with the first elastic switch piece and an OFF state in which it does not contact the first elastic switch piece. A switch cam attached to the output shaft switches between the ON state and the OFF state of the first elastic switch piece and the second elastic switch piece to switch between energization and non-energization of the motor. Characterized by

According to this aspect, the ON state and OFF state of the first elastic switch piece and the second elastic switch piece are switched by the switch cam attached to the output shaft, thereby energizing and de-energizing the motor. switch. As a result, it becomes possible to stop the rotation of the output shaft when the required state is reached, and for example, it is possible to easily open and close the damper of the ventilation fan.

A ninth aspect of the present invention is a driving device with a clutch, in any one of the first aspect to the eighth aspect, wherein the housing is provided with a second rib, and the second rib is provided on the lead wire. It is characterized in that it is provided between the portion routed in the housing and the side surface of the held solenoid.

According to this aspect, the second rib is provided between the portion of the lead wire routed in the housing and the side surface of the held solenoid. As a result, even if the lead wire is routed in the housing, the second rib prevents the lead wire from coming into contact with the coil wound around the bobbin case of the solenoid. Therefore, it is possible to reduce the risk of disconnection, short circuit, and the like.

A drive device with a clutch according to a tenth aspect of the present invention is, in the ninth aspect, wherein the first rib is arranged at a position corresponding to a portion of the lead wire which is routed in the housing. A projecting portion projecting upward in side view from the position of the wire is provided, and the portion of the lead wire routed inside the housing is arranged at a position opposite to the solenoid with respect to the projecting portion and the second rib. It is characterized by being

According to this aspect, the portion of the lead wire that is routed inside the housing is arranged at a position opposite to the solenoid with respect to the projecting portion of the first rib and the second rib. That is, since the routing of the lead wire is guided by both the first rib and the second rib, the reliability of preventing the lead wire from coming into contact with the coil portion wound around the bobbin case of the solenoid can be enhanced. Therefore, it is possible to further reduce the risk of disconnection, short circuit, and the like.

According to the eleventh aspect of the present invention, in the ninth aspect or the tenth aspect, in the drive device with a clutch, an electric element such as a capacitor is arranged in the housing located on the opposite side of the second rib to the solenoid. It is characterized by having a place to

A clutch-equipped drive device may have electric elements such as capacitors and resistors in its electric circuit depending on its performance.
According to this aspect, the provision of the second rib enables the compactness, and the space created by the compactification can be effectively used as the installation place for the electric element.

A twelfth aspect of the present invention is a driving device with a clutch, in any one of the first to eleventh aspects, wherein the output shaft includes a pulley and a wire that can be wound around the pulley and that can be let out. , wherein the winding of the wire is performed by transmitting the power of the motor to the output shaft, and the unwinding of the wire is performed by power different from the power of the motor.
Here, "power other than the power of the motor" refers to a tension spring that exerts an elastic force in the extension direction, or the weight of the damper when opening and closing the damper of a ventilation fan. It means the power to try.

According to this aspect, for example, by connecting the wire to the damper of the ventilation fan, the opening and closing of the damper can be easily realized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an embodiment of the present invention, and is a side cross-sectional view showing the overall configuration of a drive device with a clutch. FIG. 4 is a plan view showing the drive device with a clutch in a state where the housing cover is removed in the same embodiment; A perspective view showing the drive device with a clutch in a state in which the housing cover is removed in the same embodiment, FIG. 4 is a cross-sectional view taken along line AA in FIG. 3 showing the drive device with the clutch with the housing cover removed, in the same embodiment; FIG. 4 is a diagram showing the same embodiment, and is a perspective view showing a state in which an internal lead wire is removed from the state in FIG. 3 ; FIG. 6 is a diagram showing the same embodiment, and is a perspective view showing a state rotated counterclockwise by 45° from the state of FIG. 5 ; The figure which shows the same embodiment, and is a perspective view showing the housing main body of a drive device with a clutch. The figure which shows the same embodiment, and is a top view showing the housing main body of a drive device with a clutch. FIG. 10 is a side cross-sectional view showing the drive device with the clutch when the clutch is in the ON state, in the same embodiment. FIG. 10 is a side cross-sectional view showing the drive device with the clutch when the clutch is in the OFF state in the same embodiment; FIG. 10 is a diagram showing the same embodiment, and is a plan view showing an arrangement state in the case of arranging an additional electric element. FIG. 4 is a diagram showing the same embodiment, and is a wiring diagram showing an example of a circuit configuration of a drive device with a clutch.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a drive device with a clutch according to the present invention will be described in detail with reference to the accompanying drawings, taking the illustrated embodiment as an example.
1 and 2, the overall configuration of a clutch-equipped driving device 1 according to an embodiment of the present invention will be described first. Next, an example of the circuit configuration of the clutch-equipped driving device 1 will be described with reference to FIGS. 2 and 12. FIG. Next, after explaining the specific configuration of the solenoid holding portion, which is a characteristic configuration of the present invention, with reference to FIGS. and the operation and effect of the solenoid holding portion will be described.

Subsequently, the arrangement form in the case of arranging additional electric elements will be described based on FIG. The configuration of the clutch-equipped driving device 1 will be mainly referred to.

(1) Overall configuration of drive unit with clutch (see FIGS. 1 and 2)
A driving device 1 with a clutch according to this embodiment is used, for example, for opening and closing a damper of a ventilation fan. An output shaft 9 for opening and closing a damper of a ventilation fan, a clutch 20 for disconnecting and connecting the transmission of the rotation of the motor 2 to the output shaft 9, and the disconnecting and connecting operations of the clutch 20 are executed. It is basically configured by providing a solenoid 50 and a housing 100 that accommodates the motor 2 , the output shaft 9 , the clutch 20 and the solenoid 50 .

<Lead wire>
In this embodiment, a first lead wire 72 and a second lead wire 73 for supplying power to the coil 6 of the motor 2 and the coil 51 of the solenoid 50 are provided.
One end of the first lead wire 72 is connected to the first connection point 41 of the first connection fitting 84 to which one end 7a of the coil 51 of the solenoid 50 is electrically connected. 41 to the outside of the housing 100 . The connection between the first lead wire 72 and one end 2a of the coil 6 of the motor 2 will be described later.
Also, a second connection fitting 86 having a second connection portion 86c to which the other end 7b of the coil 51 of the solenoid 50 is electrically connected is attached to a corresponding mounted portion within the housing 100 as shown in FIG. installed in place. The second lead wire 73 is connected to the second connection point 42 of the second connection fitting 86 and is led out of the housing 100 from the second connection point 42 .

Additionally, in this embodiment, there are internal leads 71 that reside within the housing 100 . This internal lead wire 71 is for electrically connecting one end 2a of the coil 6 of the motor 2 to a first lead wire 72 via a switch mechanism 10 (elastic switch pieces 12A and 12B) to be described later. belongs to. That is, the internal lead wire 71 is electrically connected to the first lead wire 72 by being connected to the first connection fitting 84 via the switch mechanism 10 (elastic switch pieces 12A, 12B).
The other end 2 b of the coil 6 of the motor 2 is directly connected to the second connection fitting 86 and electrically connected to the second lead wire 72 .

The housing 100 includes a substantially rectangular container-shaped housing body 101 with an open top, a housing cover 102 closing the open top of the housing 101, and a motor 2 and a clutch disposed below the housing body 101. 20 and a drive unit casing 103 having a space for accommodating the gear train 8 and the like.
A solenoid 50 and a switch mechanism 10 are housed inside the housing body 101 .

<Solenoid>
The solenoid 50 has an iron core 51a inserted along the axial direction Z at its center. A coil 51 is wound around an iron core 51a, and a bobbin case 51b having flange portions at both ends in the axial direction Z, and one end portion (upper end portion in the illustrated embodiment) of the bobbin case 51b in the axial direction Z. and a movable yoke 53, for example, in the form of a flat plate, which is pivotably connected to the fixed yoke 52 via a pivot point 52c. It is basically configured by

Among them, the fixed yoke 52 has a horizontal portion 52a (FIGS. 9 and 10) fixed to one end of the bobbin case 51b and a vertical portion 52b (FIG. 1) extending downward from one end of the horizontal portion 52a. 9, FIG. 10). An insertion piece 52d is formed at the lower end of the vertical portion 52b to be inserted into the hole 54a of the stepped portion 54 (FIGS. 9 and 10) raised from the bottom surface of the housing body 101. As shown in FIG.
Also, the vertical portion 52b of the fixed yoke 52 is supported by a support member (not shown). An opening 56a is formed in the lower portion of the support member to allow the movable yoke 53 to swing.
On the other hand, the movable yoke 53 is a member that swings about the swing fulcrum 52c as described above. The upper surface of one end 53a of the movable yoke 53 extending toward the iron core 51a of the solenoid 50 faces the lower surface of the iron core 51a of the solenoid 50. It is arranged so as to face the upper surface of 22 .

<Switch Mechanism>
The switch mechanism 10 includes a switch cam 11 having a concave portion 11b formed in a part of a cylindrical cam surface 11a (FIG. 2), a first elastic switch piece 12A that contacts the cam surface 11a of the switch cam 11, and a second elastic switch piece 12B that is turned on by contacting the first elastic switch 12A.
The switch cam 11 is driven by the rotation of the output shaft 9 described above. Further, contacts 15A and 15B, which are composed of a U-shaped bent portion and a flat plate portion, are separately provided at the tip portions of the first elastic switch piece 12A and the second elastic switch piece 12B.

<Output shaft>
Further, the output shaft 9 is configured by a stepped shaft-like member as shown in FIG. That is, the output shaft 9 has a small-diameter shaft portion 9a fitted in a bearing portion provided in the driving unit casing 103 at its lower portion, and a small-diameter gear of the fourth transmission gear 27 at the end of the gear wheel train 8 at its upper portion. A large-diameter output gear 9b, a large-diameter shaft portion 9c fitted in a bearing portion provided in the housing body 101 on its upper portion, a switch cam 11 on its upper portion, and a mounting shaft portion engaged at its base. 9d and.
A pulley 13 is attached to the upper portion of the switch cam 11 on the attachment shaft portion 9d. One end of the wire 14 is fixed to the outer periphery of the pulley 13, and a connecting portion 13a is provided for attaching a spring (not shown) for pulling back the pulley 13 and another wire (not shown) provided in parallel. The other end of the wire 14 is connected to an operating end of a damper of a ventilation fan, for example.

Next, the motor 2, the clutch 20, and the gear train 8 housed in the driving section casing 103 will be described.
The motor 2 includes a rotor shaft 3 , a rotor support 4 , magnets 5 and coils 6 . The rotor support 4 is formed with a pin-on gear 4a that meshes with a large-diameter input gear 23a provided on the lower clutch body 23 of the clutch 20, which will be described below.

<Clutch>
The clutch 20 includes a guide rod 21 erected vertically from the driving unit casing 103, a lower clutch body 23 fitted around the lower part of the guide rod 21 and rotating, and positioned above the lower clutch body 23, It rotates while being externally fitted on the upper part of the guide rod 21, and between a connecting position P1 (FIG. 9) where it connects with the lower clutch body 23 and a disconnecting position P2 (FIG. 10) where it disconnects from the lower clutch body 23. An upper clutch body 22 movable in the axial direction Z and a compression coil spring 24 compressed between the lower clutch body 23 and the upper clutch body 22 are provided.
Further, the lower clutch body 23 is provided with an input gear 23a and a connecting concave portion 23b (FIGS. 9 and 10). The upper clutch body 22 has a connection protrusion 22b (FIGS. 9 and 10) that engages with the connection recess 23b, a small-diameter first transmission gear 22a forming part of the gear train 8, and the other end of the movable yoke 53. A boss portion 22c (FIGS. 9 and 10) is provided to contact the lower surface of 53b.

The gear train 8 includes a first transmission gear 22a provided on the upper clutch body 22, a second transmission gear 25 having a large-diameter gear and a small-diameter gear that mesh with the first transmission gear 22a, and the second transmission gear 25. Four transmission gears: a third transmission gear 26 having a large diameter gear and a small diameter gear meshing with the small diameter gear, and a fourth transmission gear 27 having a large diameter gear and a small diameter gear meshing with the small diameter gear of the third transmission gear 26 is configured as an example by providing The small-diameter gear of the fourth transmission gear 27 meshes with the large-diameter output gear 9b provided on the output shaft 9, so that the rotation of the motor 2 is transmitted to the output shaft 9 in a reduced speed state. is configured to

<Housing>
In addition, the bottom surface of the housing body 101 is provided with, for example, the two holding portions 91 and 92 (FIG. 2) having a snap-fit structure, a solenoid holder 31 integrated with the two holding portions 91 and 92, and a solenoid holder. A first rib 81 is provided at a position different from the two holding portions 91 and 92 in the vicinity of 31 and serves as another holding portion.
Furthermore, the first switch holder 33A holding the first elastic switch piece 12A, the second switch holder 33B holding the second elastic switch piece 12B, and the second elastic switch piece 12B toward the first elastic switch piece 12A side. a stopper piece 35 that regulates the movement range of the motor 2; a first connection holder 37A that holds one end 2a of the motor 2; ing.
Furthermore, a second rib 82 provided at a position different from the first rib 81 in the vicinity of the solenoid holder 31 is connected to a first lead wire having one end connected within the housing body 101 and the other end drawn out of the housing body 101 . 72 and a lead wire holder 40 for holding a second lead wire 73 whose other end is pulled out of the housing body 101 .

(2) Circuit configuration of drive unit with clutch (see FIGS. 2 and 12)
Next, an example of the circuit configuration of the clutch-equipped drive device 1 configured in this manner will be described with reference to a plan view of a specific structure shown in FIG. 2 and a wiring diagram shown in FIG.
As shown in the wiring diagram of FIG. 12, the first external connection terminal 61, the first lead wire 72, the first connection fitting 84, the coil 51 of the solenoid 50, the second connection fitting 86, the second lead wire 74 and the connection line of the second external connection terminal, power is supplied to the solenoid 50 when the power is turned on. Thereby, the clutch 20 performs a predetermined operation.
On the other hand, the coil 6 of the motor 2 positioned between the first connection fitting 84 and the second connection fitting 86 is connected via the first elastic switch 12A and the second elastic switch piece 12B as shown in FIG. Therefore, in the power ON state, when the contacts 15A and 15B of the first elastic switch 12A and the second elastic switch piece 12B are in contact with each other, power is supplied to rotate the motor, but the contacts 15A and 15B are out of contact. is interrupted and the motor stops rotating. As a result, when the power is turned on, the motor 2 is switched between the rotating state and the stopped state while the solenoid 50 remains powered.

Based on the specific structure of FIG. 2 and the wiring diagram of FIG. 12, the circuit structure will be specifically described starting from the position of the motor 2. FIG.
First, one end 2a of the coil 6 of the motor 2 is connected to one terminal 2a (here, "one terminal" is the same as "one end") at a position covered by the first connection holder 37A. 2a). One end of an internal lead wire 71 is connected to one terminal 2 a of the motor 2 . The other end of the internal lead wire 71 is connected at the connection point 43 to the second elastic switch piece 12B.

Also, the second elastic switch piece 12B is connected to the first elastic switch 12A via contacts 15B and 15A and is connected to the first connection point 41 on the first connection fitting 84. As shown in FIG.
A first lead wire 72 extends from the first connection point 41 toward a first external connection terminal 61 outside the housing body 101 . On the other hand, the first connection point 41 is connected to one end 7a of the coil 51 of the solenoid 50 via the first connection portion 84c of the first connection fitting 84 . The other end 7b of the coil 51 of the solenoid 50 is connected to the second connecting portion 86c.

The second connection portion 86c is connected to the other terminal 2b (here, The "other terminal" is connected to the "other end" using the same reference numeral 2b).
Further, the second connection fitting 86 is further provided with a second connection point 42 , and a second lead extends from the second connection point 42 toward a second external connection terminal 62 provided outside the housing body 101 . A line 73 extends.

<First rib>
The housing 100 is provided with the first ribs 81 as described above. In this embodiment, the first rib 81 is provided at a different position from the holding portions 91 and 92 of the housing 100 with respect to the solenoid 50 held by the holding portions 91 and 92 . The first rib 81 serves as another holding portion for the held solenoid 50, and a first connection portion 84c to which one end portion 7a of the coil 51 of the solenoid 50 is electrically connected. A first fitting 84 having a is attached.
That is, the first rib 81 serves to hold the solenoid 50 held by the holding portions 91 and 92 in the housing 100 as "another holding portion" separate from the "holding portions 91 and 92". In addition, it also serves as an attachment portion for attaching a first connection fitting 84 to which one end portion 7a of the coil 51 of the solenoid 50 is electrically connected.

Here, the above-mentioned "another holding portion" has a basic role of supporting the "holding portions 91 and 92". Therefore, the "other holding parts" have a holding force smaller than that of the "holding parts 91 and 92", and the holding structure is different from the snap-fit structure, and is based on a simple contact structure.

In the above-described conventional structure, the holding portion and the mounting portion are provided "separately" and "at different locations," which hinders compactness of the clutch-equipped driving device. Further, when one end of the coil of the solenoid and the connection fitting are soldered, the separation distance between the two is increased by the amount corresponding to the "different place". Therefore, the coil of the solenoid is extended to the soldering position on the connection fitting. When soldering, it is necessary to hold both positions so as not to shift, but the position becomes unstable due to the extension, and there is a problem that the workability of soldering is low.
According to the structure of the present embodiment, the "combined structure" of the first rib 81 makes it easier to make the clutch-equipped driving device 1 compact. In addition, the "combined structure" shortens the distance between one end 7a of the coil 51 of the solenoid 50 and the first connection portion 84c of the first connection fitting 84, thereby facilitating the soldering operation.

(3) Specific configuration of the solenoid holder (see Figures 2 to 8)
In the present embodiment, the first rib 81 is located at a position corresponding to the portion of the internal lead wire 71 and the first lead wire 72 that are routed in the housing 100, and is flatter than the position of the lead wire that is routed. It has a protruding portion 81b (FIG. 3) protruding upward in view.
The portions of the internal lead wire 71 and the first lead wire 72 that are routed in the housing 100 are positioned on the opposite side of the solenoid 50 with respect to the protruding portion 81b of the first rib 81 and a second rib 82, which will be described later. are placed in
As a result, since the lead wires 71 and 72 are guided by both the first rib 81 and the second rib 82, the lead wires 71 and 72 are prevented from touching the coil 51 wound around the bobbin case 51b of the solenoid 50. can increase the certainty of Therefore, it is possible to further reduce the risk of disconnection, short circuit, and the like.

The first connection fitting 84 attached to the first rib 81 includes a main body portion 84a arranged in a horizontal state, and a protruding portion 84b provided to protrude upward from the main body portion 84a in a side view. The first connection fitting 84 is attached by press-fitting the lower portion of the main body portion 84 a into the corresponding portion of the first rib 81 .
Here, the specific structure for attachment by press-fitting may be any structure that does not come off when the first connection fitting 84 is pushed into the corresponding portion of the first rib 81, and it is possible to adopt a known press-fitting structure. . Since the first connection fitting 84 has a structure in which it is press-fitted into the first rib 81 and attached, the attachment work is easy.

The second connection fitting 86 also includes a main body portion 86a that is arranged in a horizontal state, and a protruding portion 86b that protrudes upward from the main body portion 86a in a side view.
A groove-shaped first connection portion 84c is formed on the projecting portion 84b of the first connection fitting 84 . Similarly, the projecting portion 86b of the second connection fitting 86 is formed with a groove-shaped second connection portion 86c.
One end 7a of the coil 51 of the solenoid 50 is inserted into the groove of the first connecting portion 84c formed in the projecting portion 84b of the first connecting fitting 84 and soldered in that state. Similarly, the other end portion 7b of the coil 51 of the solenoid 50 is inserted into the groove of the second connection portion 86c formed in the projecting portion 86b of the second connection fitting 86 and soldered in that state. .

Further, in this embodiment, as described above, the holding portions 91 and 92 are provided at two locations, and the other holding portion 81 is provided at one location.
The holding portions 91 and 92 provided at the two locations are pressed against the elastic force and held at the position by being pressed by the portion to which the elastic force is applied at the pushed position. A snap-fit structure is adopted.
On the other hand, the first rib 81, which is another holding portion, has a simple holding structure such that, as an example, the first rib 81 is simply in contact along the outer surface of the solenoid 50 held by the holding portions 91 and 92 of the snap-fit structure. are placed.

In this way, the holding portions 91 and 92 have a two-place snap-fit structure, and the other holding portion has a single-place structure arranged along the side surface of the solenoid 50 in the held state. is. Therefore, the attachment of the solenoid 50 to the housing 100 is facilitated by the holding portions 91 and 92 having the two snap-fit structures, compared to the conventional three-place holding portions (snap-fit structure).
In addition, the first rib 81, which serves as "another holding portion", is arranged simply along the side surface of the solenoid 50 which is firmly held as described above. It is easy to design when attaching the first connection fitting 84 to the , and it is also easy to manufacture.
With this holding structure, there is less possibility that the holding portions 91 and 92 that hold the solenoid 50 in the housing 100 and the first rib 81 that serves as another holding portion are subjected to excessive force such as distortion. Therefore, the holding portions (the holding portions 91 and 92 and the first rib 81) are less likely to break when the solenoid 50 is held.

In addition, the holding portions 91 and 92 are a pair of a first holding portion 91 and a second holding portion 92 that sandwich and hold the solenoid 50 from both sides (both left and right sides of the solenoid 50 in the embodiment of FIG. 2) in a plan view. consists of
On the other hand, the first rib 81, which is the other holding portion, is positioned in a direction that intersects the direction of the line connecting the first holding portion 91 and the second holding portion 92, that is, in this embodiment, in a direction that is substantially orthogonal. Configuration.
With this structure, the "other holding portion", which is the first rib 81, can be held at three places (the first holding portion 91 and the second holding portion 92) even if the structure is simply along the side surface of the solenoid 50. Due to the relative arrangement of the first ribs 81), the solenoid 50 can be effectively pressed and held.

In this embodiment, the first rib 81 to which the first connection fitting 84 is attached is provided at a position corresponding to the position of one end 7a of the coil 51 of the solenoid 50 in the held state. One end 7a of the coil 51 of the solenoid 50 is inserted into the groove of the first connecting portion 84c formed in the projecting portion 84b of the first connecting fitting 84 and soldered in that state.
With this structure, the distance between the end portion 7a of the coil 51 of the solenoid 50 and the groove-like first connecting portion 84c formed in the protruding portion 84b of the first connecting fitting 84 is shortened, thereby facilitating the soldering work. . Furthermore, it becomes easy to realize compactness of the driving device 1 with a clutch.
Note that the second connection fitting 86 is provided at a position separate from the holding portion 92 . Specifically, the second connection fitting 86 is attached to the housing 100 so as to be located at a position corresponding to the position of the other end 7b of the coil 51 of the solenoid 50 in the held state.

Further, in this embodiment, the base portion of the first elastic switch piece 12A is electrically connected to the first connection fitting 84 attached to the first rib 81 as described above.
Also, one end 2a of the coil 6 of the motor 2 is electrically connected to a second elastic switch piece 12B which can take an ON state in which it contacts the first elastic switch piece and an OFF state in which it does not contact the first elastic switch piece. In this embodiment, the second elastic switch piece 12B is connected to one end 2a of the coil 6 of the motor 2 by an internal lead wire 71. As shown in FIG. The internal lead wire 71 is electrically connected to the base of the second elastic switch piece 12B through the connection point 43. As shown in FIG.

As described above, the first elastic switch piece 12A and the second elastic switch piece 12B have an ON state in which the contacts 15A and 15B provided at the respective tip portions are in contact with each other, and an ON state in which the contacts 15A and 15B are separated from each other. and an OFF state in which they do not touch each other.
Switching between the ON state and the OFF state of the first elastic switch piece 12A and the second elastic switch 12B is performed by a switch cam 11 attached to the attachment shaft portion 9d of the output shaft 9. FIG.

Specifically, when the switch cam 11 rotates and the contact 15A of the first elastic switch piece 12A is engaged with the concave portion 11b formed in a part of the cam surface 11a of the switch cam 11, the first The contact 15A of the elastic switch piece 12A rotates clockwise in FIG. 2 by the depth of the recess 11b.
Accompanying this, the second elastic switch piece 12B also rotates in the same direction. The contacts 15A and 15B are separated and the motor 2 is de-energized.
On the other hand, when the contact 15A of the first elastic switch piece 12A is in contact with the cam surface 11a of the switch cam 11, the contact 15A of the first elastic switch piece 12A contacts the second elastic switch piece 12B as shown in FIG. contact 15B, and the motor 2 is energized.

With the above structure, the first elastic switch piece 12A and the second elastic switch piece 12B are switched between the ON state and the OFF state by the switch cam 11 attached to the output shaft 9, thereby energizing and deenergizing the motor 2. can be switched. As a result, it becomes possible to stop the rotation of the output shaft 9 when the required state is reached, and for example, it is possible to easily open and close the damper of the ventilation fan.

<Second rib>
Further, in this embodiment, the housing main body 101 is provided with the second rib 82 . The second rib 82 is formed between the portion of the internal lead wire 71 and the first lead wire 72 routed inside the housing 100 and the outer surface of the solenoid 50 held by the holding portions 91 and 92. placed in between.
As a result, even if the two lead wires 71 and 72 are routed and arranged in the housing 100, the second rib 82 allows the coil 51 wound around the bobbin case 51b of the solenoid 50 to be connected to the internal lead wire. 71 and the first lead wire 72 can be spaced apart so that they do not touch. Therefore, it is possible to reduce the risk of disconnection or short circuit between the internal lead wire 71 and the first lead wire 72 .

The clutch-equipped driving device 1 may be provided with electric elements such as capacitors and resistors in the electric circuit depending on its performance.
According to this embodiment, the first rib 81 having the above-described configuration and arrangement and the second rib 82 having the above-described arrangement, which replaces the conventionally provided third holding portion, can be made compact. A new space is created in the housing 100 by the amount.
For example, as shown in FIG. 11, since a new space is created inside the side plate of the housing body 101, this space can be effectively used to position the second rib 82 on the opposite side of the solenoid 50 inside the housing 100. In addition, it is possible to provide a place for other electrical elements such as a capacitor 95 and a fixed resistor 97 to be placed.
As a result, it becomes possible to cope with a specially designed drive device 1 with a clutch that incorporates a capacitor 95, a fixed resistor 97, etc., in order to prevent a rush current or the like when the power source is started.

In addition, the pulley 13 is provided on the mounting shaft portion 9d of the output shaft 9, as described above, in the clutch-equipped driving device 1 according to the present embodiment, although apart from the configuration of the solenoid holding portion. Attached to the pulley 13 is a wire 14 that can be wound on and unreeled from the pulley 13 .
Winding of the wire 14 around the pulley 13 can be performed, for example, by transmitting the power of the motor 2 to the output shaft 9 via the clutch 20 and the gear train 8 . On the other hand, the drawing of the wire 14 from the pulley 13 can be configured to be executed by power other than the power of the motor 2 .
Here, "a power other than the power of the motor 2" means a tension spring arranged so that an elastic force acts on the wire 14 in the drawing-out direction, or the dead weight of the damper of the ventilation fan to return to the initial position. One example is the power to try.

(4) Operation mode of drive unit with clutch (see FIGS. 1, 2, 9 and 10)
Next, the operating modes of the clutch-equipped driving device 1 according to the present embodiment configured in this manner are as follows: (A) connection and disconnection of the clutch, (B) power transmission to the output shaft, and (C) switch mechanism ON. , OFF operation, and (D) winding and unwinding of the wire.

(A) Clutch connection and disconnection (see FIGS. 9 and 10)
Connection and disconnection of the clutch 20 are performed by a solenoid 50 . That is, when the clutch 20 is to be connected, current is passed through the coil 51 of the solenoid 50 to attract the upper surface of one end 53a of the movable yoke 53 to the lower surface of the iron core 51a as shown in FIG. As a result, the movable yoke 53 swings clockwise in FIG. It is pushed downward against the biasing force of the compression coil spring 24 .
Then, as shown in FIG. 9, the connection projection 22b of the upper clutch body 22 engages with the connection recess 23b of the lower clutch body 23, and the clutch 20 is brought into the connected state.

On the other hand, when the clutch 20 is to be disengaged, the current flowing through the coil 51 of the solenoid 50 is stopped, and the upper surface of the one end 53a of the movable yoke 53 is attracted to the lower surface of the iron core 51a as shown in FIG. Release.
In this state, the upper clutch body 22 is lifted upward by the urging force of the compression coil spring 24, and the engagement between the connection projection 22b of the upper clutch body 22 and the connection recess 23b of the lower clutch body 23 is released, and the clutch 20 is disengaged. become a state.

(B) Power transmission to the output shaft (see Fig. 1)
When power is supplied to the motor 2, the rotor support 4 starts rotating. Then, power is transmitted from the pinion gear 4a formed on the rotor support 4 to the input gear 23a formed on the lower clutch body 23, and the lower clutch body 23 starts rotating.
When the clutch 20 is in the connected state, the rotation of the lower clutch body 23 is transmitted to the upper clutch body 22 via the connection concave portion 23b and the connection convex portion 22b, causing the upper clutch body 22 to rotate.
On the other hand, when the clutch 20 is in the disengaged state, the lower clutch body 23 only idles and the rotation of the lower clutch body 23 is not transmitted to the upper clutch body 22 .

When the upper clutch body 22 of the connected clutch 20 rotates, a second transmission gear 25 and a third transmission gear, which form a gear wheel train 8 from a small-diameter first transmission gear 22a formed on the upper clutch body 22, rotate. 26, power is transmitted to the fourth transmission gear 27, and rotation is transmitted from the small diameter gear of the fourth transmission gear 27 to the output shaft 9 via the large diameter output gear 9b provided on the output shaft 9, The output shaft 9 rotates at a speed reduced by the gear train 8 .

(C) ON/OFF operation of switch mechanism (see Fig. 2)
When the output shaft 9 rotates, the rotation is transmitted from the mounting shaft portion 9d to the switch cam 11 of the switch mechanism 10, causing the switch cam 11 to rotate. When the contact 15A of the first elastic switch piece 12A is in contact with the cam surface 11a of the switch cam 11 as shown in FIG. 2, the contact 15A and the contact 15B are in contact with each other. As a result, the first elastic switch piece 12A and the second elastic switch piece 12B are turned ON, and the motor 2 is energized.

On the other hand, when the switch cam 11 rotates and the contact 15A of the first elastic switch piece 12A fits into the recess 11b of the switch cam 11, the contact 15A of the first elastic switch piece 12A and the contact 15B of the second elastic switch piece 12B are become separated. As a result, the first elastic switch piece 12A and the second elastic switch piece 12B are turned off, and the motor 2 is turned off.

(D) Wire winding and unwinding (see Fig. 1)
When the output shaft 9 rotates, the pulley 13 attached to the attachment shaft portion 9d of the output shaft 9 rotates, for example, in the direction in which the wire 14 is taken up, and the wire 14 is taken up.
On the other hand, when the power transmission to the pulley 13 is stopped, for example, an urging force such as a tension spring (not shown) whose one end is locked to the connection portion 13 of the pulley 13 acts to rotate the pulley 13 in the opposite direction. , the wire 14 is paid out.

(5) Actions and effects of drive device with clutch (see FIGS. 1 and 11)
According to the drive device 1 with a clutch according to the present embodiment configured in this way, a simple holding function and a terminal (first connection fitting) mounting function can be provided in place of the conventional three-position snap-fit structure holding portion. By adopting the first rib 81 having both , soldering work and the like are facilitated while securing the required holding force of the solenoid 50 , and the drive device 1 with a clutch can be easily made compact.

In addition, by adopting the first rib 81 having the above two functions, the space in the housing 100 can be increased, and the internal lead wire 71 and the first lead wire 72 can be easily routed.
Furthermore, by adopting the protrusions 84b provided on the second ribs 82 and the first ribs 81, the internal lead wire 71 and the first lead wire 72, which are routed and arranged in the housing 100, are connected to the coil 51 of the solenoid 50. It is possible to reduce the risk of disconnection or short-circuit due to contact with the .
In addition, by adopting two terminal holders 37A and 37B provided in the housing body 101, the dripping of solder generated during the soldering operation of one terminal 2a and the other terminal 2b of the motor 2 can be prevented from occurring at the circuit arrangement portion. can be effectively suppressed from falling into

[Other embodiments]
Although the clutch-equipped drive device 1 according to the present invention is basically configured as described above, partial configuration changes and omissions may be made without departing from the spirit of the present invention. Of course, it is also possible.

For example, the clutch-equipped driving device 1 of the present invention is not limited to being used for opening and closing the damper of a ventilation fan, and can be applied to clutch-equipped driving devices having similar problems for various purposes. Further, the shape and size of the first rib 81 and the second rib 82 are not limited to those of the illustrated embodiment, and may be appropriately changed according to the shape and size of the solenoid 50 to be used, the mounting position, the mounting angle, and the like. is possible.

As for the second rib 82 provided for the purpose of preventing contact between the coil 51 of the solenoid 50 and the lead wires 71 and 72, a cover-like member or a card provided on the solenoid 50 and the housing body 101 for the purpose of insulation is provided. It is also possible to partition the coil 51 of the solenoid 50 and the lead wires 71 and 72 by placing an insulating film or the like between them.

INDUSTRIAL APPLICABILITY The present invention can be used as a driving device installed in a narrow space inside a casing, for example, for opening and closing a damper of a ventilation fan.

1... Driving device with clutch, 2... Motor,
2a ... one terminal (one end: of the motor coil),
2b... the other terminal (the other end: of the motor coil),
3 Rotor shaft 4a Pinion gear 5 Magnet 6 Coil
7a...one end (of the solenoid coil), 7b...the other end (of the solenoid coil),
8... gear train, 9... output shaft, 9a... small diameter shaft portion, 9b... output gear, 9c... large diameter shaft portion,
9d... Mounting shaft 10... Switch mechanism 11... Switch cam 11a... Cam surface
11b... concave portion, 12A... first elastic switch piece, 12B... second elastic switch piece,
13... pulley, 13a... connection part, 14... wire,
15...Contact point 20...Clutch 21...Guide rod 22...Upper clutch body
22a... first transmission gear, 22b... connection convex portion, 22c... boss portion, 23... lower clutch body,
23a... input gear, 23b... connection recess, 24... compression coil spring,
25... 2nd transmission gear, 26... 3rd transmission gear, 27... 4th transmission gear,
31... Solenoid holder, 33... Switch holder, 35... Stopper piece,
37... Terminal holder, 39... Lead wire holder, 40... Lead wire holder,
41... First connection point, 42... Second connection point, 43... Connection point, 50... Solenoid,
51... coil, 51a... iron core, 51b... bobbin case, 52... fixed yoke,
52a...horizontal part, 52b...vertical part, 52c...swing fulcrum, 52d...insertion piece,
53... movable yoke, 53a...one end, 53b...other end, 54...stepped portion,
54a...hole, 56a...opening, 61...first external connection terminal,
62... second external connection terminal, 71... internal lead wire, 72... first lead wire,
73... second lead wire, 81... first rib (another holding part), 81b... protruding part,
82... second rib, 84... first connection fitting, 84a... body portion,
84b... Protruding part, 84c... First connecting part (grooved), 86... Second connecting fitting,
86a...Main body part, 86b...Protruding part, 86c...Second connection part (grooved),
91... Holding portion (first holding portion), 92... Holding portion (second holding portion),
95... Capacitor (electrical element), 97... Fixed resistor (electrical element),
DESCRIPTION OF SYMBOLS 100... Housing, 101... Housing main body, 102... Housing cover,
103... Drive unit casing, Z... Axial direction, P1... Connection position, P2... Disconnection position

Claims (12)

a motor;
an output shaft that receives power from the motor and rotates around the shaft to operate with respect to the outside;
a clutch for disconnecting and connecting transmission of the rotation of the motor to the output shaft;
a solenoid for performing the disengagement and engagement of the clutch;
A drive device with a clutch, comprising: a housing that accommodates the motor, the output shaft, the clutch, and the solenoid,
A first rib is provided on the housing,
The first rib is
A position different from the holding portion with respect to the solenoid held by the two holding portions forming a pair of the housing, and intersects a direction formed by a line connecting the two holding portions. a first connection fitting positioned in the direction of the solenoid and serving as another holding portion for the held solenoid, and having a first connection portion to which one end of the coil of the solenoid is electrically connected; is attached to
A driving device with a clutch characterized by: The drive device with a clutch according to claim 1,
A driving device with a clutch, comprising a first lead wire and a second lead wire for supplying power to the coil of the motor and the coil of the solenoid. 3. In the driving device with a clutch according to claim 1 or 2,
The first connection fitting has a structure to be attached by being press-fitted into the first rib,
A driving device with a clutch characterized by: In the drive device with a clutch according to any one of claims 1 to 3,
There are two holding portions,
The other holding part is one place,
A driving device with a clutch characterized by: A drive device with a clutch according to claim 4,
The holding part holds the solenoid with a snap-fit structure,
The other holding part is arranged along the side surface of the solenoid in the held state,
A driving device with a clutch characterized by: A drive device with a clutch according to claim 5,
The holding portion is composed of a pair of a first holding portion and a second holding portion that sandwich and hold the solenoid from both sides in a plan view,
the other holding portion is positioned in a direction that intersects a direction formed by a line connecting the first holding portion and the second holding portion;
A driving device with a clutch characterized by: In the drive device with a clutch according to any one of claims 1 to 6,
The first rib is provided at a position corresponding to the position of one end of the coil of the held solenoid,
A driving device with a clutch characterized by: In the driving device with a clutch according to any one of claims 1 to 7,
A first elastic switch piece is electrically connected to the first connection fitting attached to the first rib,
A second elastic switch piece is electrically connected to one end of the coil of the motor, the second elastic switch piece being capable of taking an ON state in contact with the first elastic switch piece and an OFF state in which it does not contact the first elastic switch piece;
A switch cam attached to the output shaft switches between an ON state and an OFF state of the first elastic switch piece and the second elastic switch piece to switch between energization and non-energization of the motor.
A driving device with a clutch characterized by: In the drive device with a clutch according to any one of claims 1 to 8,
A second rib is provided on the housing,
The second rib is provided between a portion of the lead wire routed in the housing and a side surface of the held solenoid,
A driving device with a clutch characterized by: In the drive device with a clutch according to claim 9,
The first rib has a protruding portion that protrudes upward in a side view from the position of the lead wire that is routed in the housing at a position that corresponds to the portion of the lead wire that is routed within the housing,
A driving device with a clutch, wherein a portion of the lead wire routed inside the housing is arranged at a position opposite to the solenoid with respect to the projecting portion and the second rib. In the drive device with a clutch according to claim 9 or 10,
Having a place for arranging an electric element such as a capacitor in the housing on the opposite side of the second rib from the solenoid,
A driving device with a clutch characterized by: In a drive device with a clutch according to any one of claims 1 to 11,
the output shaft comprises a pulley and a wire that can be wound around and unwound from the pulley;
The winding of the wire is performed by transmitting the power of the motor to the output shaft,
The wire is paid out by a power different from the power of the motor,
A driving device with a clutch characterized by:

Images