Cable plug, electrical connection cable, driver and motor driving system

Abstract

A cable plug, an electrical connection cable, a driver and a motor driving system, the cable plug is applied to the electrical connection cable between the driver and a motor, the cable plug comprises a driving end plug arranged at a first end of the electrical connection cable, the driving end plug comprises a first power line plug connector and a first encoder line plug connector, the first power line connecting plug and the first encoder line connecting plug are connected and fixed to form the integral driving end plug; the driving end plug is used for being correspondingly connected with a driving socket on the driver in an inserted mode. During wiring, the integral driving end plug is directly inserted into the driving socket of the driver, so that the electric connection between the electric connection cable and the driver can be realized, the wiring is quicker, the condition of wrong connection caused by cable crossing on the driver is avoided, and the wiring difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a cable plug, an electric connection cable, a driver and an electric machine driving system. BACKGROUND

[0002] The electric machine driving system comprises a plurality of electric machines, and a driver is connected with a corresponding electric machine through a cable for driving control of the electric machine. At present, there are a plurality of cables with different functions between the driver and the electric machine, such as power cables and encoder cables, and each cable needs to be connected with a corresponding drive socket on the driver. Since the structures and the number of the corresponding terminal of the power cable and the encoder cable are basically the same, the two cables are not easy to distinguish, and cross connection is easy to occur, thus increasing the connection difficulty and prolonging the connection time, and the troubleshooting after the wrong connection is also difficult. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a cable plug, an electric connection cable, a driver and an electric machine driving system, which can solve the problem that the cables are easy to cross connect.

[0004] According to an aspect of the present application, in one embodiment, a cable plug is provided, which is applied to an electric connection cable between a driver and an electric machine, comprising a drive end plug arranged at a first end of the electric connection cable, the drive end plug comprising a first power line plug and a first encoder line plug, the first power line plug and the first encoder line plug being connected and fixed to form an integrated drive end plug; the drive end plug is used for corresponding plug connection with a drive socket on the driver.

[0005] In one embodiment, it further comprises an electric machine end plug arranged at a second end of the electric connection cable, the electric machine end plug comprising a second power line plug and a second encoder line plug, the second power line plug and the second encoder line plug being connected and fixed to form an integrated electric machine end plug; the electric machine end plug is used for corresponding plug connection with a wiring socket on the electric machine.

[0006] In one embodiment, the first power line plug and the first encoder line plug are detachably connected and fixed; and / or, the second power line plug and the second encoder line plug are detachably connected and fixed.

[0007] In one embodiment, the shells of the first power line plug and the first encoder line plug are connected and fixed by integral injection molding; and / or, the shells of the second power line plug and the second encoder line plug are connected and fixed by integral injection molding.

[0008] According to another aspect of the present application, an electrical connection cable is provided in one embodiment, which is used for the electrical connection between a drive and a motor, including a cable body and the cable plug as described above that is fixedly connected to the cable body; the cable body includes a power connection line and an encoder connection line, and the power connection line and the encoder connection line are electrically connected to corresponding plug connectors respectively, and the power connection line and the encoder connection line are fixedly connected to form an integral cable body.

[0009] In one embodiment, the cable body includes a jacket, which encloses the connecting wires to form an integral cable body;

[0010] Alternatively, the cable body includes a connector, which is an integrally formed structure. The connector is provided with at least two clamping portions, each clamping portion correspondingly clamps a connecting wire to form the integral cable body.

[0011] In one embodiment, the power connection line includes a brake line and a power line.

[0012] According to another aspect of the present application, an embodiment provides a driver, including a drive socket, the drive socket including an encoder line socket and a power line socket, the encoder line socket and the power line socket are arranged adjacent to each other to form an integral drive socket, and the drive socket is used to correspond to the drive end plug of the cable plug as described above.

[0013] According to yet another aspect of the present application, an embodiment provides a motor drive system, comprising a motor, the electrical connection cable as described above, and the driver as described above.

[0014] According to the cable plug, electrical connection cable, driver and motor drive system of the above embodiments, the first power line connector and the first encoder line connector in the cable plug are connected and fixed to form an integral drive end plug. When wiring, the integral drive end plug is directly plugged into the drive socket of the driver to achieve electrical connection between the electrical connection cable and the driver. The wiring is faster and there will be no wrong connection on the driver due to cable crossing, which reduces the difficulty of wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a cable according to an embodiment;

[0016] Figure 2 is another structural schematic diagram of a cable according to an embodiment;

[0017] Figure 3 This is a schematic structural diagram of a drive-end plug according to an embodiment;

[0018] Figure 4Fig. 1 is a schematic diagram of a structure of a motor end plug according to an embodiment;

[0019] Figure 5 Fig. 2 is a schematic diagram of a structure of a driver according to another embodiment;

[0020] Figure 6 Fig. 3 is a schematic diagram of a structure of a motor drive system according to a first embodiment;

[0021] Figure 7 Fig. 4 is a schematic diagram of a structure of a motor drive system according to a second embodiment;

[0022] Figure 8 Fig. 5 is a schematic diagram of a structure of a motor drive system according to a third embodiment;

[0023] BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 1 - cable body, 101 - power connection line, 102 - encoder connection line; 2 - driver end plug, 201 - first power line plug connector, 202 - first encoder line plug connector; 3 - motor end plug, 301 - second power line plug connector, 302 - second encoder line plug connector; 4 - connecting member; 5 - driver; 6 - motor. DETAILED DESCRIPTION

[0025] The application will be described in further detail below with reference to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following embodiments, many details are described in order to provide a more thorough description of the application. However, it will be apparent to persons skilled in the art that some features can be omitted in different cases, or replaced by other elements, materials, methods, etc. In some cases, some operations related to the application are not shown or described in the specification in order to avoid the core of the application being obscured by too much description, and it is not necessary to describe these operations in detail for persons skilled in the art based on the description in the specification and general technical knowledge in the art.

[0026] In addition, features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. Meanwhile, the steps or actions in the method description can also be adjusted in sequence or order as is apparent to persons skilled in the art. Therefore, the order in the specification and the drawings is only for the purpose of clearly describing a certain embodiment, and does not mean that the order is necessary, unless otherwise stated that a certain order must be followed.

[0027] The serial numbers of components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and have no technical meaning. Unless otherwise specified, "connection" and "coupling" in this application include direct and indirect connections (couplings).

[0028] There are multiple cables with different functions between the driver and the motor in the motor drive system, such as power cables and encoder cables, each of which needs to be connected to the corresponding drive socket on the driver. It is easy to cross each other between the cables and to connect the wrong cable to the drive socket. The drive end plug of the cable plug in the cable of the application is of a whole structure, and the connection will not be wrong due to the crossing of the cables, reducing the difficulty of connection.

[0029] Please refer to Figures 1 to 8 The cable plug provided by the embodiments of the application is applied to the electrical connection cable between the driver 5 and the motor 6, and includes a drive end plug 2 arranged at the first end of the electrical connection cable and other functional components or structures as needed, which will be described below.

[0030] The drive end plug 2 includes a first power line plug-in head 201 and a first encoder line plug-in head 202, and the first power line plug-in head 201 and the first encoder line plug-in head 202 are connected and fixed to form a whole drive end plug 2; the drive end plug 2 is used for corresponding plug-in connection with the drive socket 501 on the driver 5.

[0031] It can be understood that the first power line plug-in head 201 and the first encoder line plug-in head 202 are two plug-in heads with different functions, the first power line plug-in head 201 can realize the connection of the power supply, and the first encoder line plug-in head 202 can realize the transmission of the encoder signal. In the embodiments, the first power line plug-in head 201 and the first encoder line plug-in head 202 are each provided with an exposed metal connection terminal, and the connection line of the electrical connection cable is in electrical connection with the metal connection terminal of the corresponding plug-in head. In the embodiments, the metal connection terminals of the plug-in heads can be set as needed, for example, the metal connection terminals of the first power line plug-in head 201 can include the metal connection terminals of the U-phase, V-phase and W-phase, the metal connection terminals of the first encoder line plug-in head 202 can be used to transmit the signals sent by the driver 5 and the signals required to be received by the driver 5, and the number of metal connection terminals of the first power line plug-in head 201 and the first encoder line plug-in head 202 can be the same or different. The embodiments do not limit the arrangement mode of the two plug-in heads in the drive end plug 2, for example, the first power line plug-in head 201 and the first encoder line plug-in head 202 can be arranged adjacent to each other, and the plug-in directions of the two plug-in heads are arranged in parallel. The drive end plug 2 in the embodiments can be used in combination with the drive socket 501 on the driver 5.

[0032] In this embodiment, the first power line plug connector 201 and the first encoder line plug connector 202 are connected and fixed to form an integral drive end plug 2. When wiring, the integral drive end plug 2 is directly plugged into the drive socket 501 of the driver 5 to achieve electrical connection between the electrical connection cable and the driver 5. The wiring is faster and there will be no wrong connection on the driver 5 due to cable crossing, which reduces the difficulty of wiring.

[0033] In one embodiment, Figure 4 As shown, it also includes a motor end plug 3 for being set at the second end of the electrical connection cable, and the motor end plug 3 includes a second power line plug connector 301 and a second encoder line plug connector 302. The second power line plug connector 301 and the second encoder line plug connector 302 are connected and fixed to form an integral motor end plug 3; the motor end plug 3 is used to be plugged into the corresponding wiring socket on the motor 6. After the second power line plug connector 301 and the second encoder line plug connector 302 are connected and fixed to form an integral motor end plug 3, it can make it more difficult for the electrical connection cables to cross, further reducing the probability of wrong connection. Moreover, when wiring, the motor end plug 3 can be directly plugged into the wiring socket on the motor 6, which improves the wiring efficiency. In this embodiment, the second power line plug connector 301 and the second encoder line plug connector 302 are provided with metal connection terminals, and the connection wires of the electrical connection cables are electrically connected to the metal connection terminals of the plug connectors with corresponding functions. In some application scenarios, such as Figure 2 The second power line plug connector 301 and the second encoder line plug connector 302 may not be fixedly connected, and the motor end plug 3 may be a split type.

[0034] In one embodiment, the first power line connector 201 and the first encoder line connector 202 are detachably connected and fixed; or in some embodiments, the second power line connector 301 and the second encoder line connector 302 are detachably connected and fixed; or in some embodiments, the first power line connector 201 and the first encoder line connector 202, and the second power line connector 301 and the second encoder line connector 302 are both detachably connected and fixed. The detachable connection facilitates subsequent maintenance and facilitates replacement of a connector in the drive-end plug 2. In this embodiment, the detachable connection and fixation can be a snap-on fixation, for example, a clip is provided at one end of the plug connector, and a snap-on hole is provided on the outer wall of the other end. When connected, the clip is snapped into the snap-on hole to form a fixation, and when disassembled, the clip is moved out of the snap-on hole by force. Alternatively, the two plug connectors can be directly bound together by a binding hoop. In order to prevent the binding hoop from shifting, a binding groove can be provided around the outer wall of each plug connector, and the binding hoop fits into the binding groove. Alternatively, corresponding connecting holes can be provided on each plug connector, and when connected, the plug connectors can be directly connected and fixed by bolts passing through the connecting holes in sequence. Alternatively, the plug connectors can be fixed by bonding. In this embodiment, the detachable connection between the first power line plug connector 201 and the first encoder line plug connector 202 can be the same as the detachable connection between the second power line plug connector 301 and the second encoder line 302, or it can be different. In this embodiment, the detachable connection and fixation is not limited to the above examples, and a detachable connection can also be formed by other connection methods.

[0035] In one embodiment, Figure 3 As shown, the housings of the first power line connector 201 and the first encoder line connector 202 are fixed together by integral injection molding; or in some embodiments, the housings of the second power line connector 301 and the second encoder line connector 302 are fixed together by integral injection molding; or in some embodiments, the housings of the first power line connector 201 and the first encoder line connector 202, and the housings of the second power line connector 301 and the second encoder line connector 302, are both fixed together by integral injection molding. The housings of the first power line connector 201 and the first encoder line connector 202 are integrally molded, and the housings of the second power line connector 301 and the second encoder line connector 302 are also integrally molded, which facilitates mass production and improves production efficiency. In some embodiments, during injection molding, the metal connector terminals can be first fixed in the injection mold, and then the mold is closed and injection molded to form a one-piece drive-end plug 2 including two connectors, or a one-piece motor-end plug 3 including two connectors.

[0036] According to the cable plug of the above embodiment, the first power line plug 201 is fixedly connected with the first encoder line plug 202 to form an integrated drive end plug. When wiring, the integrated drive end plug 2 is directly plugged into the drive socket 501 of the driver 5, so as to realize the electrical connection between the electrical connection cable and the driver 5, and the wiring is more rapid, and the driver 5 will not appear the situation of being connected in error due to the crossing of the electrical connection cable, and the wiring difficulty is reduced.

[0037] Please refer to Figures 1-4 The embodiment of the present application also provides an electrical connection cable applied to the electrical connection between the driver 5 and the motor 6, which comprises a cable main body 1 and a cable plug as described above fixedly connected with the cable main body 1; the cable main body 1 comprises a power connection line 101 and an encoder connection line 102, the power connection line 101 and the encoder connection line 102 are respectively electrically connected with corresponding plugs, and the power connection line 101 and the encoder connection line 102 are fixedly connected to form an integrated cable main body.

[0038] It can be understood that in the embodiment, the first power line plug 201, the power connection line 101 and the second power line plug 301 are correspondingly electrically connected, and the first encoder line plug 202, the encoder connection line 102 and the second encoder line plug 302 are correspondingly electrically connected. When the motor end plug 3 is an integrated structure, the wiring socket on the motor 6 can also be provided as an integrated structure. The power connection line 101 and the encoder connection line 102 are fixedly connected to form an integrated cable main body, and the connection lines and the electrical connection cables are not easy to cross, which further reduces the probability of being connected in error and is also beneficial to the transportation and storage of the cable.

[0039] In an embodiment, as Figure 1 shown, the cable main body 1 comprises a sleeve, the sleeve wraps the power connection line 101 and the encoder connection line 102 to form an integrated cable main body 1. The fixing formed by the sleeve is stable and reliable, and the sleeve also forms protection for the connection lines, thereby prolonging the service life of the connection lines.

[0040] In another embodiment, as Figure 2As shown, the cable body 1 includes a connector 4, which is an integrally formed structure. The connector 4 is provided with at least two clamping parts, each clamping part corresponding to a connecting wire, forming an integral cable body 1. When the connector 4 is clamped and fixed, it is convenient to disassemble the connecting wire, which is beneficial for subsequent maintenance, and the connection between the connecting wires is also flexible. The number of connectors 4 in the cable body 1 can be set to one, two or even more as needed. When the cable body 1 is longer, the number of connectors 4 can be relatively increased, and when the cable body 1 is shorter, the number of connectors 4 can be relatively reduced. In one embodiment, the connector 4 includes an integrally formed connecting body, and the connecting body is provided with at least two through holes. The side walls of each through hole are not completely closed, and the part of the side wall that is not completely closed forms a bayonet for the connecting wire to be clamped in. In order to ensure that the connector 4 stably clamps the connecting wire, the diameter of the through hole can be slightly smaller than the diameter of the connecting wire. In this embodiment, the through holes can be arranged in parallel, and the positions of the through holes can also be set as needed. For example, they can be arranged parallel to each other on the upper surface of the connecting body, or parallel to each other on two opposite sides of the connecting body, or parallel to each other on the upper surface and side wall of the connecting body.

[0041] In one embodiment, the power connection cable 101 includes a brake cable and a power cable. The brake cable is used to electrically connect to the brake in the motor 6 to control the brake, and the power cable is used to provide power to the motor 6. The encoder cable in this embodiment is used to connect to the encoder in the motor 6 and can transmit the signal obtained by the encoder. The cable body in this embodiment may also include connecting cables for other functions, which can be configured as needed.

[0042] According to the electrical connection cable of the above embodiment, the power connection line 101 and the encoder connection line 102 are fixedly connected to form a monolithic cable body 1, and the first power line plug connector 201 is fixedly connected to the first encoder line plug connector 202 to form a monolithic drive-end plug 2, and the second power line plug connector 301 is fixedly connected to the second encoder line plug connector 302 to form a monolithic motor-end plug 3. When wiring, the monolithic drive-end plug 2 is simply plugged into the drive socket 501 of the driver 5, and the monolithic motor-end plug 3 is plugged into the wiring socket of the motor 6 to complete the wiring. This makes wiring faster, avoids cross-connection of electrical connection cables, and reduces wiring difficulty.

[0043] See also Figure 5 An embodiment of the present application also provides a driver, including a drive socket 501, the drive socket 501 includes an encoder line socket and a power line socket, the encoder line socket and the power line socket are arranged adjacent to each other to form an integral drive socket 501, and the drive socket 501 is used to correspond to the drive end plug 2 of the cable plug as described above.

[0044] It will be appreciated that the drive socket 501 in this embodiment is provided with exposed metal connection terminals. These metal connection terminals are used to electrically connect to the metal connection terminals of the corresponding functional connectors on the drive-end plug 2. The encoder line socket is used to connect to the first encoder line connector 202, and the power line socket is used to connect to the first power line connector 201. The number of metal connection terminals in the drive socket 501 in this embodiment can be adjusted as needed. For example, the power line socket's metal connection terminals can include metal connection terminals for U phase, V phase, and W phase. The metal connection terminals of the encoder line socket can be used to transmit signals from the driver 5 and receive signals from the encoder. The drive socket 501 in this embodiment can be used in conjunction with the drive-end plug 2 of the electrical connection cable in the above-mentioned embodiment. The arrangement of the encoder line socket and the power line socket in the drive socket 501 is similar to the arrangement of the first power line connector 201 and the first encoder line connector 202 in the drive-end plug 2. The encoder line socket and the power line socket can be arranged adjacent to each other, with their connection directions parallel. Alternatively, in some application scenarios, the drive socket 501 may also include other sockets in addition to the encoder line socket and the power line socket. When including other sockets, the arrangement of the sockets in the drive socket 501 can be the same as the arrangement of the connectors in the drive-end plug 2. In this embodiment, the encoder line socket and the power line socket are arranged adjacent to each other by injection molding to form an integral structure. During assembly, the integral structure of the encoder line socket and the power line socket is fixed to the housing of the driver 5 at one time. Alternatively, the encoder line socket and the power line socket can be first fixed together to form an adjacent arrangement by other connection methods, such as snap-fitting, bonding, etc., and then fixed to the housing of the driver 5 at one time after being connected together. Alternatively, a fixing groove can be provided on the housing of the driver 5, and the encoder line socket and the power line socket can be fixed together through the fixing groove to form an adjacent arrangement. In this embodiment, the adjacent arrangement between the encoder line socket and the power line socket is not limited to the above embodiment; other methods can also be used to achieve the adjacent arrangement. The driver 5 in this embodiment also includes other functional components or structures as needed, such as circuit boards, control panels, etc., which will not be described in detail here.

[0045] In one embodiment, the encoder wire socket and the power wire socket are respectively provided with grooves, and the grooves are provided with at least two metal connecting terminals. The first power wire connector 201 and the first encoder wire connector 202 are provided with protrusions, and the protrusions are provided with at least two metal connecting terminals. The protrusions are inserted into the corresponding grooves, and the metal connecting terminals of the protrusions are in electrical communication with the metal connecting terminals of the corresponding grooves. The automatic alignment of the metal connecting terminals is formed through the concave-convex matching, and the effective electrical connection between the drive socket 501 and the drive end connector 2 is ensured. In this embodiment, after the driver 5 is connected with the motor 6 through the electrical connection cable, the driver 5 can provide power to the motor 6 through the electrical connection cable, or send a control signal to the motor 6 through the electrical connection cable, or receive a working signal sent by the motor 6 through the electrical connection cable, and the like.

[0046] According to the driver 5 of the above embodiment, the encoder wire socket and the power wire socket are arranged adjacent to form an integrated drive socket 501. When wiring, the integrated drive end connector 2 is directly inserted into the integrated drive socket 501 of the driver 5, so that the electrical connection between the electrical connection cable and the driver 5 can be realized. The wiring is simple and fast, and the driver 5 will not be incorrectly connected due to the crossing of the electrical connection cable, thereby reducing the wiring difficulty.

[0047] Please refer to Figures 6-8 , the application also provides a motor driving system, which comprises the motor 6, the electrical connection cable as described above, and the driver 5 as described above. In this embodiment, the drive end connector 2 of the electrical connection cable is inserted into the drive socket 501 of the driver 5, and the motor end connector 3 of the electrical connection cable is inserted into the wiring socket of the corresponding motor 6.

[0048] The electrical connection cable and the driver 5 in this embodiment are the same as those in the above embodiment, and will not be described again. As shown in Figure 8 , in the motor driving system, one driver 5 can correspond to one motor 6, that is, the driver 5 can be connected with one motor 6 through one electrical connection cable, and the driver 5 can be provided with one drive socket 501, which is connected with the motor 6 through one electrical connection cable of the above embodiment. One driver 5 can also correspond to multiple motors 6, that is, one driver 5 can be connected with multiple motors 6 through multiple electrical connection cables. For example, as shown in Figure 7 , the driver 5 can be provided with at least two drive sockets 501, and each drive socket 501 is connected with the corresponding motor 6 through one electrical connection cable of the above embodiment.

[0049] According to the motor driving system of the above embodiment, the integral driving end plug 2 is plugged on the integral driving socket 501 of the driver 5, so that the electrical connection between the electrical connection cable and the driver 5 can be realized, the wiring is simple and fast, and the misconnection due to the crossing of the electrical connection cable does not occur on the driver 5, and the wiring difficulty is reduced.

[0050] The above application of specific examples is used to help understand the application and does not limit the application. For those skilled in the art to which the application belongs, according to the idea of the application, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A cable plug for use in an electrical connection cable between a drive and a motor, characterized in that, The drive end plug is used for corresponding plug-in with the drive socket on the driver.

2. The cable plug of claim 1, wherein, The motor end plug is used for corresponding plug-in with the wiring socket on the motor.

3. The cable plug of claim 2, wherein, The first power line plug-in head and the first encoder line plug-in head are detachably connected and fixed; and / or, the second power line plug-in head and the second encoder line plug-in head are detachably connected and fixed.

4. The cable plug of claim 2, wherein, The shell of the first power line plug-in head and the first encoder line plug-in head is connected and fixed by integral injection molding; and / or, the shell of the second power line plug-in head and the second encoder line plug-in head is connected and fixed by integral injection molding.

5. An electrical connection cable for use in an electrical connection between a drive and an electrical machine, characterised in that, The cable main body includes a sheath, and each connection line is wrapped in the sheath to form the integral cable main body.

6. The electrical connection cable of claim 5, wherein, The cable main body includes a connector, which is an integral structure, and the connector is provided with at least two clamping portions, each clamping portion clamping a connection line to form the integral cable main body. The power connection line includes a brake line and a power supply line.

7. The electrical connection cable of claim 5 or 6, wherein, The drive socket includes an encoder line socket and a power line socket, which are arranged in close proximity to form the integral drive socket, and the drive socket is used for corresponding plug-in with the drive end plug of the cable plug of any one of claims 1-4.

8. A driver, characterized by The motor includes the motor, the electric connection cable of any one of claims 5-7, and the driver of claim 8.

9. An electric motor drive system characterized by comprising: ​

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