drive motor

Abstract

A kind of driving motor, comprising: motor body, including the shaft end and terminal end being oppositely arranged along the axial direction;Driver, including shell and circuit board, shell is connected to the terminal end of motor body;Formed with accommodating space in shell, circuit board is arranged in accommodating space;Signal connector, signal connector is fixedly arranged in shell, and signal connector is at least partially exposed on the outer surface of shell;Signal connector is electrically connected with circuit board.Because signal connector in the embodiment of the application is directly fixedly arranged in shell, therefore the stress of signal connector will not be transmitted to the circuit board electrically connected with it but is directly transmitted to shell, thereby effectively prevent the stress of circuit board and device on circuit board, reduce the security risk of circuit board.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a drive motor. Background Technology

[0002] An integrated motor is a device that integrates the motor body and the driver into one unit. The driver of an integrated motor is usually designed with multiple circuit boards, including an interface circuit board, a power board, a control board, etc. The circuit boards are fixed to each other, and a signal connector is fixedly installed on the interface circuit board. The signal connector is exposed outside the driver housing. If the signal connector is subjected to force applied by other external components, or force directly transmitted through the driver housing, this force will be transmitted through the connection terminals and the interface circuit board to other circuit boards that are directly fixedly connected to the interface circuit board, resulting in safety hazards for each circuit board and the components on the circuit board. Utility Model Content

[0003] The main technical problem this invention addresses is that, in related technologies, the exposed signal connector of a motor transmits force to the circuit board, leading to significant safety hazards for the circuit board and its components.

[0004] To address the aforementioned technical problems, this application provides a drive motor, comprising: The motor body includes a shaft end and a wiring terminal arranged opposite each other along the axial direction; The driver includes a housing and a circuit board, the housing being connected to the terminals of the motor body; an accommodating space is formed within the housing, and the circuit board is disposed within the accommodating space; A signal connector is fixedly disposed in the housing, and at least partially exposed on the outer surface of the housing; the signal connector is electrically connected to the circuit board.

[0005] In one embodiment, the signal connector is disposed along the axial direction at one end of the housing away from the motor body.

[0006] In one embodiment, the circuit board is fixedly disposed on the inner side of the housing.

[0007] In one embodiment, the circuit board includes a power board and a control board, which are stacked along the axial direction and have a preset gap between them.

[0008] In one embodiment, the motor body, the control board, and the power board are arranged sequentially along the axial direction.

[0009] In one embodiment, the system further includes a plurality of rigid connecting columns, with each end of the rigid connecting column disposed on the power board and the control board, respectively, so as to fix the control board to the power board.

[0010] In one embodiment, the device further includes a first connector and a second connector with detachable electrical connections. The first connector is disposed on the terminal and extends axially toward the driver, and is electrically connected to the motor windings within the motor body. The second connector is disposed on the circuit board and electrically connected to the circuit board, and extends axially toward the motor body.

[0011] In one embodiment, the device further includes a winding terminal block, wherein the terminal block is fixedly provided with a support frame extending away from the shaft end along the axial direction, and the winding terminal block is fixedly provided with the end of the support frame; the first plug-in member is disposed on the winding terminal block.

[0012] In one embodiment, a conductive wire is further included, which is electrically connected to the signal connector and the circuit board.

[0013] In one embodiment, the signal connector includes an aviation connector.

[0014] According to the drive motor provided in this application, since the signal connector is directly fixedly installed in the housing and no longer forms a fixed connection with the circuit board, the signal transmission required by the signal connector is realized by the electrical connection wire with the circuit board, thereby reducing the stress transmitted from the signal connector to the circuit board and reducing the safety hazards of the circuit board. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the drive motor structure in an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the explosion of the drive motor in an embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the circuit board structure in an embodiment of this application.

[0018] Figure 4 This is a schematic diagram of an exploded circuit board in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1-Motor body; 11-Shaft end; 12-Terminal; 2-Driver; 21-Housing; 22-Circuit board; 221-Power board; 222-Control board; 3-Signal connector; 4- Rigid connecting column; 51-First connector; 52-Second connector; 53-Winding terminal block; 54-Support frame. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0021] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0022] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0023] An integrated motor is a device that integrates the motor body and driver into one unit. Compared to traditional separate structures, it simplifies the design by reducing external connections, and reduces the size and weight of the device through integrated design, resulting in a compact structure and saving installation space. The driver of an integrated motor typically houses multiple circuit boards, including an interface circuit board, a power board, and a control board. The interface circuit board contains signal connectors, which are exposed through the driver housing for connection to external interfaces. However, when the signal connector is subjected to force, the force is transmitted to the interface circuit board due to its connection with it, and further to other circuit boards due to the interface circuit board's connections to other circuit boards. This poses a safety hazard to each circuit board and the components mounted on it.

[0024] To prevent external signal connectors from transmitting force to the circuit board inside the driver, thus posing a safety hazard to the circuit board and its components, this application provides a drive motor. Please refer to [reference needed]. Figure 1 and Figure 2 The drive motor includes: The motor body 1 includes a shaft end 11 and a terminal 12 arranged opposite to each other along the axial direction; The driver 2 includes a housing 21 and a circuit board 22. The housing 21 is connected to the terminal 12 of the motor body 1. An accommodating space is formed inside the housing 21, and the circuit board 22 is disposed in the accommodating space. The signal connector 3 is fixedly disposed on the housing 21, and at least part of the signal connector 3 is exposed on the outer surface of the housing 21; the signal connector 3 is electrically connected to the circuit board 22.

[0025] The drive motor in this embodiment is an integrated motor that connects the motor body 1 and the driver 2 into one unit. By reducing external connections, the design is simplified, and the integrated design reduces the size and weight of the drive motor, making the structure more compact and thus improving the installation environment in which the drive motor can be applied.

[0026] The motor body 1 in this embodiment includes a housing, a stator, a rotor, and a shaft. The stator includes motor windings that are arranged around the inner side of the housing. The rotor is disposed on the shaft, which passes through the stator and is connected to the housing via bearings, allowing the shaft to rotate relative to the housing. The axial direction of the rotor and the center line of the stator's winding structure are collinear, which is the axial direction in this embodiment.

[0027] The motor body 1 has two axial ends, namely a shaft end 11 for outputting torque and a terminal 12 for connecting the driver 2. The driver 2 is fixedly mounted on the terminal 12. To accommodate various circuit boards or components, the driver 2 has a hollow accommodating space, in which the circuit board 22 is housed, maintaining the overall uniformity of the drive motor's appearance. The housing 21 of the driver 2 forms the accommodating space. The housing 21 can be composed of one or more components. When the housing 21 is composed of a single component, an opening can be provided at the end of the housing 21 near the motor body 1. This allows for the assembly and disassembly of the components within the accommodating space of the housing 21 before fixing the housing 21 to the motor body 1, maintaining the overall uniformity of the drive motor's appearance after fixing the housing 21 to the motor body 1. When the housing 21 of the driver 2 is composed of two or more components, the housing 21 can include a body and an end cover. The body has an opening, and the end cover is located at the opening of the body to cover the accommodating space inside the body.

[0028] In order to achieve electrical connection with external power sources, communication sources, etc., the drive motor in this embodiment of the application also includes a signal connector 3. The signal connector 3 itself is a component made of rigid material, which usually includes conductive metal and its alloy for achieving electrical connection. In addition, the signal connector 3 may also include other components for auxiliary connection. For example, the signal connector 3 may include an aviation connector. The aviation connector usually forms a fixed connection with the assistance of sealing gaskets, threaded fasteners, etc., to ensure connection strength and improve sealing performance.

[0029] To prevent the stress of the signal connector 3 from being directly transmitted to the circuit board 22 connected to it, in this embodiment, the signal connector 3 is fixedly connected to the housing 21, but unlike the other embodiment, the signal connector 3 is electrically connected to the circuit board 22. The fixed connection between the signal connector 3 and the housing 21 means that the signal connector 3, either directly or through other connectors, forms a relatively fixed connection with the housing 21. Specific connection methods include, but are not limited to, fixed connections formed through threaded fasteners, welding, or integral molding of the signal connector 3 directly onto the housing 21. Because the signal connector 3 is fixedly connected to the housing 21, the force on the signal connector 3 is transmitted to the housing 21 through this connection, and not to the circuit board 22, which is not rigidly connected to the signal connector 3. This effectively reduces the stress on the circuit board 22 and improves its safety.

[0030] In some optional embodiments, to facilitate the insertion and removal of the signal connector 3 and improve the overall aesthetics of the drive motor, the signal connector 3 in this embodiment is axially positioned at the end of the housing 21 away from the motor body 1. By positioning the signal connector 3 axially at the end of the housing 21 away from the motor body 1, all wires and interfaces that connect to external power or communication sources pass through the tail end of the driver 2, thus improving the overall integrity of the drive motor. Furthermore, the signal connector 3 in this embodiment may include one or more connectors, and each signal connector 3 may extend axially in parallel on the end face of the housing 21.

[0031] In some alternative embodiments, to fix the circuit board 22, it can be fixedly disposed on the inner side of the housing 21. Specifically, threaded holes, slots, and other connecting structures can be provided on the inner side of the housing 21 to cooperate with the circuit board 22 to achieve a fixed connection.

[0032] In some alternative embodiments, for ease of component placement and to save assembly space, please refer to... Figure 3 and Figure 4The circuit board 22 may specifically include a power board 221 and a control board 222, which are stacked axially and have a preset gap between them. The signal connector 3 can be electrically connected to the power board 221. In this embodiment, the circuit board 22 may include two relatively independent circuit boards: a power board 221 and a control board 222. The power board 221 may have a power circuit, and the signal connector 3 is also electrically connected to it. The control board 222 may have an encoder circuit, a control circuit, and a power supply circuit. The power board 221 and control board 222 are fixedly connected, and the preset gap between them allows for better heat dissipation during operation, avoiding the heat dissipation difficulties caused by direct contact between the power board 221 and control board 222. Moreover, in this embodiment, by directly connecting the signal connector 3 to the power board 221, the interface circuit board is omitted, reducing the number of components required for assembling the drive motor, thereby reducing the assembly complexity of the drive motor and improving assembly efficiency.

[0033] In some optional embodiments, in order to reduce the heat concentration phenomenon during the operation of the drive motor, the motor body 1, the control board 222, and the power board 221 can be arranged sequentially along the axial direction. In other words, in this embodiment, the power board 221 is located further away from the motor body 1 and closer to the housing 21 of the driver 2 than the control board 222, which can effectively reduce the temperature rise of the entire drive motor.

[0034] In some optional embodiments, to achieve a fixed connection between the power board 221 and the control board 222, and to maintain a preset gap between the power board 221 and the control board 222, the drive motor in this embodiment further includes multiple rigid connecting columns 4. Each rigid connecting column 4 has its two ends respectively disposed on the power board 221 and the control board 222, thereby fixing the control board 222 to the power board 221. The fixed connection between the power board 221 and the control board 222 is achieved through the rigid connecting columns 4. Having multiple rigid connecting columns 4 prevents positional shifts or tilting between the power board 221 and the control board 222.

[0035] In some alternative embodiments, to enhance the connection strength between the rigid connecting posts 4 and the power board 221 and the control board 222, the number of rigid connecting posts 4 includes at least three, and the lines connecting each pair of the at least three rigid connecting posts 4 are located on different straight lines. Distributing three or more rigid connecting posts 4 along different straight lines can enhance the connection strength based on the principle of triangular support, thereby preventing loosening and misalignment of the connection between the power board 221 and the control board 222.

[0036] In some alternative embodiments, to connect the motor body 1 and the driver 2, thereby achieving an integrated drive motor structure and improving the convenience of electrical connection between the wiring in the motor body 1 and the driver 2, a first connector 51 and a second connector 52 with detachable electrical connections may be included. The first connector 51 is disposed at the terminal 12 and extends axially toward the driver 2, and is electrically connected to the motor windings within the motor body 1. The second connector 52 is disposed on and electrically connected to the circuit board 22, and extends axially toward the motor body 1. The first connector 51 and the second connector 52 are respectively disposed on the motor body 1 and the driver 2. The first connector 51 is electrically connected to the motor windings, and the second connector 52 is electrically connected to the circuit board 22. Therefore, the detachable electrical connection between the first connector 51 and the second connector 52 can correspondingly determine whether or not there is an electrical connection between the motor body 1 and the circuit board 22. Specifically, in this embodiment of the application, the connection method between the first connector 51 and the second connector 52 includes that the first connector 51 has a connector and the second connector 52 has a corresponding socket. By inserting the connector into the socket, the electrical connection between the first connector 51 and the second connector 52 can be realized; conversely, the first connector 51 can be configured as a socket and the second connector 52 can be configured as a plug.

[0037] In addition, to improve the plugging performance and prevent detachment, an elastic electrical connection structure can be provided on the first plug 51 and / or the second plug 52. For example, a spring can be provided on the surfaces of the first plug 51 and / or the second plug 52 that are in contact with each other. The spring keeps the first plug 51 and the second plug 52 in the plugged state, so that the first plug 51 and the second plug 52 are kept in contact, thereby maintaining the electrical connection.

[0038] In some optional embodiments, to facilitate the installation of the first connector 51, the drive motor in this embodiment may further include a winding terminal block 53. A support frame 54 extending axially away from the shaft end 11 is fixedly installed on the terminal 12, and the winding terminal block 53 is fixedly installed at the end of the support frame 54. The first connector 51 is installed on the winding terminal block 53. Corresponding circuits can be installed on the winding terminal block 53, and the first connector 51 is directly installed on the winding terminal block 53. This allows the first connector 51 to be fixed by the winding terminal block 53 while simultaneously achieving electrical connection between the first connector 51 and the motor windings. For ease of assembly and operation, the terminal 12 is fixedly installed with the support frame 54, and the winding terminal block 53 is installed on the support frame 54. The support frame 54 can be integrally formed on the motor body 1, or it can be detachably connected to the motor body 1, thereby facilitating maintenance and operation of the winding terminal block 53.

[0039] In some optional embodiments, conductive wires may be included to achieve electrical connection between the signal connector 3 and the circuit board 22, wherein the conductive wires are electrically connected to the signal connector 3 and the circuit board 22. To prevent stress from being transmitted to the circuit board 22 after the signal connector 3 is subjected to force, thus preventing potential safety hazards to the circuit board 22, in this embodiment, the signal connector 3 and the circuit board 22 are not directly fixedly connected. Instead, an electrical connection is formed through conductive wires. This electrical connection can be achieved by welding or other methods, fixing one end of a flexible conductive wire to the signal connector 3 and the other end to the circuit board 22, thereby achieving the purpose of forming an electrical connection between the signal connector 3 and the circuit board 22. Moreover, since the conductive wires are flexible, the force on the signal connector 3 will not be transmitted through the conductive wires. Furthermore, since the signal connector 3 is already fixedly connected to the housing 21, the force on the signal connector 3 will be absorbed by the housing 21, thus protecting the circuit board 22 and improving its safety performance. Alternatively, the electrical connection between the signal connector 3 and the circuit board 22 can also be achieved by using a solder pin located at the end of the signal connector 3. The solder pin is electrically connected to the circuit board 22 by welding. Since the solder pin is small in size and relatively soft, the electrical connection to the circuit board via the solder pin also reduces the stress transmitted to the circuit board 22 through the signal connector 3, thereby improving the safety performance of the circuit board 22.

[0040] According to the drive motor in this embodiment, since the signal connector 3 is directly fixedly mounted on the housing 21 and is no longer directly fixedly connected to the circuit board 22, the signal transmission required by the signal connector is achieved by electrical connection with the circuit board, thereby reducing the stress transmitted from the signal connector 3 to the circuit board and reducing the safety hazards of the circuit board 22.

[0041] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A drive motor, characterized in that, include: The motor body includes a shaft end and a wiring terminal arranged opposite each other along the axial direction; The driver includes a housing and a circuit board, the housing being connected to the terminals of the motor body; an accommodating space is formed within the housing, and the circuit board is disposed within the accommodating space; A signal connector, wherein the signal connector is fixedly disposed in the housing, and the signal connector is at least partially exposed on the outer surface of the housing; The signal connector is electrically connected to the circuit board.

2. The drive motor as described in claim 1, characterized in that, The signal connector is disposed along the axial direction at the end of the housing away from the motor body.

3. The drive motor as described in claim 1, characterized in that, The circuit board is fixedly mounted on the inner side of the housing.

4. The drive motor as described in claim 1, characterized in that, The circuit board includes a power board and a control board, which are stacked along the axial direction and have a preset gap between them.

5. The drive motor as described in claim 4, characterized in that, The motor body, the control board, and the power board are arranged sequentially along the axial direction.

6. The drive motor as described in claim 4, characterized in that, It also includes multiple rigid connecting columns, with each end of the rigid connecting column respectively disposed on the power board and the control board, so as to fix the control board to the power board.

7. The drive motor according to any one of claims 1-6, characterized in that, It also includes a first connector and a second connector with detachable electrical connections. The first connector is disposed at the terminal and extends along the axial direction toward the driver. The first connector is electrically connected to the motor windings in the motor body. The second connector is disposed on the circuit board and electrically connected to the circuit board. The second connector extends along the axial direction toward the motor body.

8. The drive motor as described in claim 7, characterized in that, It also includes a winding terminal block, wherein the terminal block is fixedly provided with a support frame extending away from the shaft end along the axial direction, and the winding terminal block is fixedly provided with the end of the support frame; the first plug-in member is provided on the winding terminal block.

9. The drive motor as described in claim 1, characterized in that, It also includes conductive wires that are electrically connected to the signal connector and the circuit board.

10. The drive motor as described in claim 1, characterized in that, The signal connector includes an aviation connector.

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