JP7028220B2 - How to write data to circuit-mounted motors, control devices, and control circuits - Google Patents

Description

The present invention relates to a circuit-mounted motor, a control device, and a method of writing data to a control circuit.

The following Patent Document 1 discloses a motor including a control circuit that controls the rotation of the output shaft. The motors described in this document include a waterproof connector to which an external connector is connected. A terminal connected to the control circuit is inserted through the waterproof connector. Further, the waterproof connector is formed with a signal supply member insertion hole through which a signal supply member (probe for writing) is inserted. Then, when it becomes necessary to rewrite (write) the software after assembling the motor, the signal supply member is inserted into the signal supply member insertion hole of the waterproof connector, and the signal supply member is connected to the control circuit. This makes it possible to rewrite the software.

Japanese Unexamined Patent Publication No. 2009-21192

However, if a hole through which a writing probe is inserted is formed in the connector to which the external connector is connected, the configuration of the connector becomes complicated. Further, when the connector to which the external connector is connected is provided with a writing terminal, the connector configuration is similarly complicated.

In consideration of the above facts, the present invention can obtain a circuit-mounted motor, a control device, and a method for writing data to a control circuit, which can suppress the complicated configuration of the connector to which the external connector is connected. The purpose.

The circuit-mounted motor according to claim 1 has a connected portion to which a motor main body and a probe for writing are connected, a control circuit for controlling the rotation of the motor main body, and a terminal connected to the control circuit. The control circuit is provided with a connector to which an external connector is connected, and a breathing hole that communicates a space in which the control circuit is arranged and a space on the opposite side of the space in which the control circuit is arranged. A case for covering the breathing hole is provided, and the connected portion is arranged on an extension of the breathing hole when the breathing hole is viewed from a space opposite to the space where the control circuit is arranged.

According to the circuit-mounted motor according to claim 1, power can be supplied from the terminal to the control circuit by connecting the external connector to the connector of the case. As a result, the motor body is controlled by the control circuit. Here, the control circuit is provided with a connected portion to which a probe for writing is connected. Then, when the breathing hole provided in the case is viewed from the space opposite to the space where the control circuit is arranged, the connected portion is arranged on the extension of the breathing hole. In this configuration, data can be written to the control circuit by inserting the writing probe into the breathing hole and connecting the writing probe to the connected portion. Further, in this configuration, compared with a configuration in which a hole for inserting a writing probe is formed in the connector to which the external connector is connected, or a writing terminal is provided in the connector to which the external connector is connected. , It is possible to prevent the configuration of the connector from becoming complicated.

The circuit-mounted motor according to claim 2 is the circuit-mounted motor according to claim 1, further comprising a motor housing in which the motor body is supported, the case is attached to the motor housing, and the control circuit is the same. It is arranged in the space between the motor housing and the case.

According to the circuit-mounted motor according to claim 2, the writing probe is inserted into the breathing hole and the writing probe is connected to the connected portion without removing the case from the motor housing. , Data can be written to the control circuit.

The circuit-mounted motor according to claim 3 is the circuit-mounted motor according to claim 1 or 2, wherein the control circuit includes a microcomputer, and the connected portion includes the microcomputer and the terminal. It is placed between.

According to the circuit-mounted motor according to claim 3, the connected portion is arranged between the microcomputer and the terminal. As a result, the wiring for data writing to the microcomputer can be shortened as compared with the case where the writing terminal is provided in the connector to which the external connector is connected.

The circuit-mounted motor according to claim 4 is the circuit-mounted motor according to any one of claims 1 to 3, wherein a support member for supporting the writing probe is engaged in the case. A locked portion is provided.

According to the circuit-mounted motor according to claim 4, the support member that supports the writing probe is locked to the locked portion of the case, thereby facilitating the positioning of the writing probe with respect to the case. Can be done.

The control device according to claim 5 has a connected portion to which a probe for writing is connected, has a control circuit for controlling a controlled object, and has a terminal connected to the control circuit, and is connected to an external connector. The connector is provided with a case having a breathing hole communicating with a space in which the control circuit is arranged and a space on the opposite side of the space in which the control circuit is arranged, and covering the control circuit. The connected portion is arranged on the extension of the breathing hole when the breathing hole is viewed from the space opposite to the space where the control circuit is arranged.

According to the control device according to claim 5, power can be supplied from the terminal to the control circuit by connecting the external connector to the connector of the case. As a result, the controlled object is controlled by the control circuit. Here, the control circuit is provided with a connected portion to which a probe for writing is connected. Then, when the breathing hole provided in the case is viewed from the space opposite to the space where the control circuit is arranged, the connected portion is arranged on the extension of the breathing hole. In this configuration, data can be written to the control circuit by inserting the writing probe into the breathing hole and connecting the writing probe to the connected portion. Further, in this configuration, compared with a configuration in which a hole for inserting a writing probe is formed in the connector to which the external connector is connected, or a writing terminal is provided in the connector to which the external connector is connected. , It is possible to prevent the configuration of the connector from becoming complicated.

The method of writing data to the control circuit according to claim 6 is the method of writing data to the control circuit of the circuit-mounted motor or control device according to any one of claims 1 to 5. In the connection step of inserting the writing probe into the breathing hole and connecting the writing probe to the connected portion, and in a state where the writing probe is connected to the connected portion. , A writing step of writing data to the control circuit.

According to the method of writing data to the control circuit according to claim 6, the probe for writing is inserted into the breathing hole, and the probe for writing is connected to the connected portion (connection step). Next, data is written to the control circuit in a state where the probe for writing is connected to the connected portion (writing step). As described above, according to the method of writing data to the control circuit according to claim 6, a method of inserting a probe for writing through a connector to which an external connector is connected and writing data of the control circuit, or an external method. Compared with the method of providing a writing terminal on the connector to which the connector is connected and writing the data of the control circuit using this writing terminal, it is possible to suppress the complicated configuration of the connector. ..

The method of writing data to the control circuit according to claim 7 is the method of writing data according to claim 6, wherein the writing probe is removed from the connected portion, and the writing probe is used. It further includes a connection disconnection step of extracting from the breathing hole and a closing member attaching step of attaching the closing member to the case to close the breathing hole by the closing member.

According to the method of writing data to the control circuit according to claim 7, after the above-mentioned connection step and writing step, the writing probe is removed from the connected portion, and the writing probe is removed from the breathing hole. Extraction (connection disconnection process). Next, by attaching the closing member to the case, the breathing hole is closed by the closing member (closing member mounting step). By going through these steps, it is possible to suppress the invasion of foreign matter from the breathing hole into the case (control circuit side).

The method of writing data to the circuit-mounted motor, the control device, and the control circuit of the present invention has an excellent effect that the configuration of the connector to which the external connector is connected can be suppressed from becoming complicated.

It is a perspective view which shows the circuit-mounted motor of this embodiment. It is a perspective view corresponding to self 1 which shows the circuit-mounted motor of this embodiment, and shows the state which the waterproof cap is removed. FIG. 3 is a partial cross-sectional view showing a circuit-mounted motor cut along a line corresponding to line 3-3 shown in FIG. It is a side view which shows the process of fixing a circuit-mounted motor to a fixing jig, and connecting a probe to a control circuit. It is sectional drawing corresponding to FIG. 3 which shows the process of writing data to a control circuit. It is a conceptual diagram which shows the software writing system. It is an enlarged perspective view which shows the process of connecting a probe of another form to a control circuit. It is sectional drawing corresponding to FIG. 5 which shows the process of writing data to a control circuit by the probe of another form. It is a partial cross-sectional view which shows the process of writing data to the control circuit of the control device of this embodiment.

The circuit-mounted motor 10 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3. The arrow Z direction, arrow R direction, and arrow C direction, which are appropriately shown in the drawing, indicate one side of the output shaft 12 in the rotation axis direction, the outside in the radial direction of rotation, and one side in the circumferential direction of rotation, respectively. Further, when simply indicating the axial direction, the radial direction, and the circumferential direction, the rotation axis direction, the rotational radial direction, and the rotational circumferential direction of the output shaft 12 are indicated unless otherwise specified.

As shown in FIGS. 1 and 2, the circuit-mounted motor 10 of this embodiment is used as a wiper motor of a vehicle. The circuit-mounted motor 10 includes a motor body 14, a speed reducer (not shown) that reduces and transmits the rotation of the motor body 14 to the output shaft 12, and a motor housing in which the motor body 14 is supported and the speed reducer is housed. The housing 16 and the like are provided. Further, the circuit-mounted motor 10 includes a control circuit 18 that controls the rotation of the output shaft 12. Further, the circuit-mounted motor 10 includes a case 20 that is attached to the housing 16 to cover the open end side of the housing 16.

The motor body 14 includes a stator 24 having a yoke housing 22 formed in a bottomed cylindrical shape with the housing 16 side open, and a rotor (not shown) rotatably supported inside the yoke housing 22. It is configured. Then, the rotation of the rotor is decelerated by a speed reducer (for example, a worm gear fixed to the rotor and a worm wheel that can rotate integrally with the output shaft 12) and transmitted to the output shaft 12. The output shaft 12 is designed to rotate.

The housing 16 is formed by using an aluminum alloy or the like. The housing 16 is open on the other side in the axial direction, and a speed reducer is housed inside the housing 16. Further, a motor body fixing portion 26 to which the motor body 14 is fixed is provided in a portion of the housing 16 adjacent to the portion in which the speed reducer is housed.

FIG. 3 shows a partial cross-sectional view of the circuit-mounted motor 10 cut along the line corresponding to line 3-3 shown in FIG. Here, in FIG. 3, only the circuit board 28 and the case 20 that form a part of the control circuit 18 are shown in cross section. Further, the illustration of the configuration supporting the control circuit 18 is omitted.

The control circuit 18 includes a circuit board 28 and a plurality of circuit elements 30 and the like attached to the circuit board 28. The circuit board 28 is arranged between the housing 16 and the case 20 so as to face an reducer (not shown) in the axial direction. Then, by energizing the control circuit 18, the rotation of the motor body (rotor) is controlled so that the rotation speed, rotation direction, rotation range, etc. of the output shaft 12 become a predetermined rotation speed or the like. ing. A terminal 49 provided in a connector 46, which will be described later, is connected to one end of the circuit board 28. Further, a microcomputer 32 is attached to the surface of the circuit board 28 on the speed reducer side (output shaft 12 side). The microcomputer 32 is connected to a conductive portion 34 for writing software (data) provided on the circuit board 28. The side 36 of the conductive portion 34 for writing, which is opposite to the side to which the microcomputer 32 is connected, extends along the surface of the circuit board 28 on the other side in the axial direction. Further, a part of the writing conductive portion 34 opposite to the side to which the microcomputer 32 is connected is connected to the connected portion 38 to which the writing probe 62 (see FIG. 4) to be described later is connected. Has been done. Here, in the present embodiment, when viewed from the radial direction (viewed from the direction in which the circuit board 28 extends), the connected portion 38 is located between the microcomputer 32 and the terminal 49 and at a position close to the microcomputer 32. Have been placed.

The case 20 is formed in a box shape with the housing 16 side open using a highly insulating resin material. The case 20 includes a bottom wall portion 40 arranged so as to face the circuit board 28, and a side wall portion 42 that bends and extends from the outer peripheral end of the bottom wall portion 40 toward the housing 16. Then, the case 20 is attached to the housing 16 by screwing the screw 44 (see FIG. 1) inserted into a part of the case 20 into the housing 16.

Further, the case 20 includes a connector 46 that projects radially outward from the side wall portion 42. Inside the connector 46, a terminal 49 with which an external connector-side terminal provided on the external connector engages is provided. The terminal 49 is supported by the case 20 in a state where a part thereof is embedded in the case 20 (connector 46).

As shown in FIGS. 2 and 3, the bottom wall portion 40 of the case 20 has a space 50 inside the case 20 (a space in which a control circuit 18 or the like formed between the case 20 and the housing 16 is arranged). A breathing hole 54 is formed to communicate the space 52 outside the case 20 (the space opposite to the space formed between the case 20 and the housing 16 in which the control circuit 18 and the like are arranged). When the breathing hole 54 is viewed from the outside of the case 20 and from the other side in the axial direction, the inner edge of the breathing hole 54 is circular. Further, when the breathing hole 54 is viewed from the outside of the case 20 and from the other side in the axial direction, the connected portion 38 of the conductive portion 34 is arranged on the extension of the breathing hole 54 (on the extension to one side in the axial direction). There is. The breathing hole 54 is closed by a closing member 56 attached to the case 20.

Further, around the portion of the bottom wall portion 40 of the case 20 where the breathing hole 54 is formed, an annular rib 47 surrounding the breathing hole 54 is erected toward the other side in the axial direction. The rib 47 is divided in the circumferential direction by a plurality of notches 48 (four in this embodiment).

(Action and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

As shown in FIGS. 1 to 3, according to the circuit-mounted motor 10 of the present embodiment described above, when power is supplied to the control circuit 18 from the external connector connected to the connector 46 via the terminal 49, The rotation of the rotor of the motor body 14 is controlled. As a result, the rotation speed, rotation direction, rotation range, and the like of the output shaft 12 are controlled to be predetermined rotation speeds and the like.

Here, in the present embodiment, after the assembly of the circuit-mounted motor 10 is completed, the software of the control circuit 18 can be written (including rewriting). When writing (including rewriting) the software of the control circuit 18, first, as shown in FIG. 2, the closing member 56 is removed from the case 20 (closing member removing step).

Next, as shown in FIG. 4, the circuit-mounted motor 10 is fixed to the fixing jig 58 (fixing step). It is preferable to appropriately provide a spacer member 60 between the circuit-mounted motor 10 and the fixing jig 58 so that the posture of the circuit-mounted motor 10 with respect to the fixing jig 58 is stable.

Next, as shown in FIGS. 4 and 5, the writing probe 62 is inserted into the breathing hole 54 formed in the case 20 to connect the writing probe 62 to the connected portion 38 ( Connection process). Here, the probe 62 for writing is supported by a support member 64 formed in a plate shape, and the support member 64 is fixed to the movable jig 66. Then, when the movable jig 66 moves to the fixing jig 58 side, the writing probe 62 is inserted into the breathing hole 54 formed in the case 20, and the connected portion 38 of the writing probe 62 is inserted. The connection to is automatically completed.

Next, as shown in FIGS. 5 and 6, software data is written to the control circuit 18 with the writing probe 62 connected to the connected portion 38 (writing step). The software data is set in the personal computer 70. Then, this data is written from the emulator 72 to the control circuit 18 via the probe 62.

Further, after the above-mentioned connection step and writing step, the writing probe 62 is removed from the connected portion 38, and the writing probe 62 is taken out from the breathing hole (connection disconnection step). Next, as shown in FIG. 1, by attaching the closing member 56 to the case 20, the breathing hole 54 (see FIG. 2) is closed by the closing member 56 (closing member attaching step). As a result, the invasion of foreign matter into the case 20 from the breathing hole 54 is suppressed.

As described above, in the present embodiment, the configuration and method of writing the data of the control circuit 18 by inserting the writing probe 62 through the connector 46 to which the external connector is connected, and the connector to which the external connector is connected. A writing terminal is provided in the 46, and the configuration of the connector 46 can be suppressed from becoming complicated as compared with the configuration and method of writing the data of the control circuit 18 using the writing terminal. As a result, the increase in the size of the connector 46 and its peripheral portion can be suppressed, and the increase in the size of the circuit-mounted motor 10 can be suppressed. Further, since the configuration of the connector 46 can be suppressed from becoming complicated, it is possible to suppress an increase in the cost (unit price) of the circuit-mounted motor 10.

Further, as shown in FIG. 5, in the configuration of the present embodiment, data can be written to the control circuit 18 without removing the case 20 from the housing 16.

Further, in the present embodiment, the connected portion 38 to which the probe 62 for writing is connected is arranged between the microcomputer 32 and the terminal 49 and at a position close to the microcomputer 32. As a result, the wiring for data writing to the microcomputer 32 can be shortened as compared with the case where the writing terminal is provided on the connector 46 to which the external connector is connected. Further, by writing data to the microcomputer 32 by dedicated communication (single wire UART), the data can be written quickly.

In the present embodiment, an example in which the closing member 56 is attached to and detached from the case 20 has been described, but the present invention is not limited thereto. For example, the breathing hole 54 may be configured to be closed by a disposable closing member 56.

Further, in the present embodiment, an example in which the fixing jig 58 and the movable jig 66 are used in the above connection step (see FIGS. 4 and 5) has been described, but such a fixing jig 58 and the movable jig 66 have been described. It may be configured not to use. For example, as shown in FIGS. 7 and 8, the support member 64 that supports the probe 62 is arranged inside the annular rib 47 as a locked portion, and inside the annular rib 47 and inside the annular rib 47. It may be configured to fit between the notches. In this configuration, the positioning of the probe 62 for writing with respect to the case 20 (circuit-mounted motor 10) can be facilitated without using the fixing jig 58 and the movable jig 66 described above.

Further, the present invention can be applied not only to the circuit-mounted motor 10 but also to various control devices 68 for controlling the engine and drive system of the vehicle as shown in FIG. In the control device 68 shown in FIG. 9, the members and parts corresponding to the circuit-mounted motor 10 are designated by the same reference numerals as the members and parts corresponding to the circuit-mounted motor 10.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and can be modified in various ways other than the above within a range not deviating from the gist thereof. Of course.

10 ... Circuit mounted motor, 14 ... Motor body, 16 ... Housing (motor housing), 18 ... Control circuit, 32 ... Microcomputer, 38 ... Connected part, 46 ... Connector, 49 ... Terminal, 54 ... Breathing hole, 56 ... Closing member, 62 ... probe, 68 ... control device

Claims (7)

With the motor body
A control circuit that has a connected portion to which a probe for writing is connected and controls the rotation of the motor body, and
A connector having a terminal connected to the control circuit and to which an external connector is connected, a breathing hole that communicates a space in which the control circuit is arranged and a space on the opposite side of the space in which the control circuit is arranged, and a breathing hole. And a case that covers the control circuit,
Equipped with
A circuit-mounted motor in which the connected portion is arranged on an extension of the breathing hole when the breathing hole is viewed from a space opposite to the space in which the control circuit is arranged. Further provided with a motor housing in which the motor body is supported
The case is attached to the motor housing and
The circuit-mounted motor according to claim 1, wherein the control circuit is arranged in a space between the motor housing and the case. The control circuit is configured to include a microcomputer.
The circuit-mounted motor according to claim 1 or 2, wherein the connected portion is arranged between the microcomputer and the terminal. The circuit-mounted motor according to any one of claims 1 to 3, wherein the case is provided with a locked portion in which a support member for supporting the writing probe is locked. A control circuit that has a connected part to which a probe for writing is connected and controls a controlled object,
A connector having a terminal connected to the control circuit and to which an external connector is connected, a breathing hole that communicates a space in which the control circuit is arranged and a space on the opposite side of the space in which the control circuit is arranged, and a breathing hole. And a case that covers the control circuit,
Equipped with
A control device in which the connected portion is arranged on an extension of the breathing hole when the breathing hole is viewed from a space opposite to the space in which the control circuit is arranged. A connection step of inserting the writing probe into the breathing hole and connecting the writing probe to the connected portion.
A writing step of writing data to the control circuit with the writing probe connected to the connected portion, and a writing step.
The method for writing data to the control circuit of the circuit-mounted motor or control device according to any one of claims 1 to 5. The connection disconnection step of disconnecting the writing probe from the connected portion and pulling out the writing probe from the breathing hole.
A closing member attaching step of closing the breathing hole by the closing member by attaching the closing member to the case, and
6. The method for writing data according to claim 6.

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