External wire holder and motor

Abstract

The utility model discloses an external wire holder and a motor, and belongs to the technical field of motors, the external wire holder comprises a wire holder body, a support plate and a plurality of copper bars, and the wire holder body, the support plate and the copper bars are integrally formed by injection molding; the wire holder body is provided with a plurality of mounting grooves for mounting binding posts, first nuts are injected in the mounting grooves, wiring holes in the upper ends of the copper bars are coaxially arranged and communicated with the first nuts, the upper ends of the mounting grooves are open, and the lower ends of the mounting grooves are closed; the motor comprises a front end cover, a rear end cover, a rotor and a stator. The external wire holder is installed on the outer side end face of the rear end cover. According to the design, the sealing performance of the wire holder is improved, and the wire holder can be mounted on the outer side of the motor, so that the radial size of the motor is reduced, materials are saved, the cost is reduced, the power wire harness can be arranged forwards and backwards, and the range of adaptive vehicle types is expanded; and the problems of sealing failure of the whole machine and insulation failure of the motor caused by the operation problem of personnel are completely eradicated.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and particularly relates to an external wiring seat and a motor. Background Art

[0002] The motor uses a wiring seat to connect the stator and an external power harness, so that external power is transmitted to the stator to drive the rotor to rotate. However, at present, the wiring seats in the motor industry are basically arranged inside the motor, as shown in Figure 1 As shown. There are the following disadvantages when arranged inside: ① The wiring seat 2 is arranged inside the motor and is generally installed inside the rear end cover 1 of the motor. There will be a safety electrical clearance inside the end cover, resulting in an increase in the radial dimension of the rear end cover 1. The installation space for vehicle motors is already very compact, and it cannot meet the installation requirements in the narrow space of the vehicle model; ② With the rapid development of new energy vehicles, the requirements of the main engine factories are various, and the installation methods of power harnesses are also various. Because the built-in wiring seat 2 is installed inside the rear end cover 1, one rear end cover 1 can only have one wire outlet direction and cannot meet the various customer requirements; ③ For the built-in wiring seat 2, when the customer installs the power harness, it is necessary to remove the wiring box cover plate 11 and then install the power harness. There is an O-ring at the wiring box cover plate 11. If the personnel operate irregularly, the airtightness of the whole machine may be unqualified after installation, and water ingress may cause insulation failure. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an external wiring seat and a motor, in which the connection between the copper row and the wiring seat body is reliable, the sealing performance of the wiring seat is good, it can be installed on the outside of the motor, the radial dimension of the motor itself is reduced, the applicable vehicle model range is wide, and the problems of airtight failure of the whole machine and motor insulation failure caused by personnel operation problems are eliminated.

[0004] To solve the above technical problems, the technical solution of the utility model is:

[0005] An external wiring seat includes a wiring seat body, a support plate and a plurality of copper rows. The support plate is vertically connected to the lower end of the wiring seat body. The upper end of the copper row extends out of the upper end surface of the wiring seat body for connecting a power harness, and the lower end is arranged on the support plate for connecting the three-phase lines of the stator. The wiring seat body, the support plate and the copper row are integrally injection-molded; the wiring seat body is provided with a plurality of installation grooves for installing wiring posts, and a first nut is injection-molded in the installation grooves. The wiring holes at the upper ends of the copper rows are coaxially arranged and communicated with the first nut. The upper end of the installation groove is open and the lower end is closed.

[0006] Furthermore, a plurality of grooves are alternately arranged on the two side surfaces of the part of the copper row injection-molded inside the wiring seat body.

[0007] Further, the end of the copper bar extending out of the upper end face of the terminal block body is bent horizontally, and the installation groove is arranged vertically.

[0008] Further, there are three copper bars and three installation grooves respectively arranged in a corresponding manner.

[0009] Further, a partition board is arranged on the upper end face of the terminal block body, and the partition board is arranged between adjacent installation grooves.

[0010] Further, the support plate is provided with installation holes for installing terminal posts. The installation holes are arranged horizontally, and a second nut is injection-molded in the installation holes. The wiring holes at the lower end of the copper bar are coaxially arranged and communicated with the second nut.

[0011] Further, the support plate is composed of three support arms, the copper bars are correspondingly arranged on the support arms, and reinforcing ribs are connected between adjacent support arms.

[0012] Further, the terminal block body is provided with a plurality of weight-reducing holes.

[0013] Further, the terminal block body is provided with a plurality of vertically arranged fixing holes.

[0014] A motor includes a front end cover, a rear end cover, a rotor and a stator installed between the front end cover and the rear end cover. The external terminal block as described above is installed on the outer end face of the rear end cover, and an external power harness and the three-phase wires of the stator are respectively installed on the terminal block through terminal posts.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows:

[0016] Since the external terminal block of the present utility model includes a terminal block body, a support plate and a plurality of copper bars, the support plate is vertically connected to the lower end of the terminal block body, the upper end of the copper bar extends out of the upper end face of the terminal block body for connecting the power harness, and the lower end is arranged on the support plate for connecting the three-phase wires of the stator. The terminal block body, the support plate and the copper bars are integrally injection-molded; the terminal block body is provided with a plurality of installation grooves for installing terminal posts, and a first nut is injection-molded in the installation grooves. The wiring holes at the upper end of the copper bar are coaxially arranged and communicated with the first nut. The upper end of the installation groove is open and the lower end is closed. The copper bar and the first nut are directly injection-molded on the terminal block body, which is convenient for the installation of the terminal post, and the lower end of the installation groove is closed, so as to ensure the sealing performance of the terminal block, and the IP67 sealing requirement can be achieved, which can meet the requirement of being installed on the outside of the motor.

[0017] Since the motor of the present utility model includes a front end cover, a rear end cover, and a rotor and a stator installed between the front end cover and the rear end cover, the above-mentioned external wiring seat is installed on the outer end face of the rear end cover, and the external power harness and the three-phase wires of the stator are respectively installed on the wiring seat through the terminal posts. Installing the wiring seat on the outside of the motor can reduce the radial dimension of the motor itself. In this way, it can not only meet the layout of the motor in a narrow space, but also save the materials used for the motor and reduce the material cost of the motor itself; it can meet the arrangement of the power harness forward and backward, and one type of motor can meet the customer's needs, increasing the range of applicable vehicle models; the wiring box cover is cancelled, and the customer can directly install the power harness on the wiring seat when installing it, eliminating the problems of the whole machine seal failure and motor insulation failure caused by personnel operation problems.

[0018] In summary, the external wiring seat and the motor of the present utility model solve the technical problems in the prior art that the wiring seat is installed inside the motor, resulting in large size and possible problems of the whole machine seal failure and power failure when installing the power harness. The technical solution of installing the wiring seat on the outside of the motor by improving the sealing performance of the wiring seat itself can reduce the radial dimension of the motor itself, save materials, reduce costs, and at the same time can meet the arrangement of the power harness forward and backward, increase the range of applicable vehicle models, and eliminate the problems of the whole machine seal failure and motor insulation failure caused by personnel operation problems. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the use state of the built-in motor wiring seat in the prior art;

[0020] Figure 2 is a schematic structural diagram of the external wiring seat of the present utility model;

[0021] Figure 3 is a top view of the external wiring seat of the present utility model;

[0022] Figure 4 is Figure 3 a cross-sectional view along line A-A;

[0023] Figure 5 is a side view of the external wiring seat of the present utility model;

[0024] Figure 6 is a partial structural schematic diagram of the motor of the present utility model;

[0025] In the figure, 1 - rear end cover, 11 - wiring box cover, 2 - wiring seat, 3 - wiring seat body, 31 - first nut, 32 - installation groove, 33 - weight reduction hole, 34 - fixing hole, 35 - partition plate, 4 - support plate, 41 - second nut, 42 - installation hole, 43 - support arm, 44 - reinforcing rib, 5 - copper bar. Detailed Embodiment

[0026] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model.

[0027] Embodiment 1:

[0028] As Figure 2 and Figure 4 collectively shown, an external terminal block includes a terminal block body 3, a support plate 4, and a plurality of copper bars 5. The support plate 4 is vertically connected to the lower end of the terminal block body 3. The upper end of the copper bar 5 extends out of the upper end face of the terminal block body 3 for connecting a power harness, and the lower end is disposed on the support plate 4 for connecting the stator three-phase wires. The terminal block body 3, the support plate 4, and the copper bar 5 are integrally injection-molded. The terminal block body 3 is provided with a plurality of mounting grooves 32 for mounting terminal posts. A first nut 31 is injection-molded in the mounting groove 32. The wiring holes at the upper end of the copper bar 5 are coaxially arranged and communicated with the first nut 31. The upper end of the mounting groove 32 is open and the lower end is closed. The upper end of the copper bar 5 is exposed. After the terminal post of the external power harness is inserted into the mounting groove 32 and threadedly connected to the first nut 31, a tight connection between the terminal post and the copper bar 5 can be achieved. While the terminal post is convenient to install, the sealing performance of the terminal block 2 is also ensured, meeting the IP67 sealing requirement and being able to meet the need for installation outside the motor.

[0029] As Figure 4 shown, on both side surfaces of the part of the copper bar 5 injection-molded inside the terminal block body 3, a plurality of grooves are staggered, increasing the contact area between the copper bar 5 and the terminal block body 3, ensuring that the sealing of the terminal block 2 meets the IP67 requirement, and also ensuring the reliability of the connection between the copper bar 5 and the terminal block body 3. Among them, the end of the copper bar 5 extending out of the upper end face of the terminal block body 3 is bent horizontally, and the mounting groove 32 is vertically arranged, further increasing the reliability of the connection between the copper bar 5 and the terminal block body 3 and facilitating the installation of the terminal post.

[0030] As Figure 2 , Figure 3 and Figure 4 collectively shown, there are three copper bars 5 and three mounting grooves 32 respectively corresponding to each other. The U, V, and W three-phase wires of the stator are respectively connected to the three copper bars 5. On the upper end face of the terminal block body 3, two partition plates 35 are provided. The partition plates 35 are disposed between adjacent mounting grooves 32 and are upwardly convex, which can enhance the electrical insulation between the terminal posts here.

[0031] Furthermore, the terminal block body 3 is provided with a plurality of weight-reducing holes 33, as Figure 3As shown, different-shaped weight-reducing grooves are adaptively formed on the left side of the terminal block body 3, which can reduce the material consumption, cost, and weight of the terminal block body 3 while ensuring its strength. The terminal block body 3 is provided with a plurality of vertically arranged fixing holes 34. In this application, 4 fixing holes 34 are provided, and 4 bolts are used to fix the terminal block 2 on the outside of the motor.

[0032] As Figure 4 shown, the support plate 4 is provided with mounting holes 42 for mounting terminal posts. The mounting holes 42 are arranged horizontally, and second nuts 41 are injection-molded in the mounting holes 42. The wiring holes at the lower end of the copper busbar 5 are coaxially arranged and communicated with the second nuts 41. The terminal posts connected to the three-phase stator wires are respectively inserted into the mounting holes 42 and are threadedly connected to the second nuts 41.

[0033] As Figure 2 and Figure 5 collectively shown, the support plate 4 is composed of three support arms 43, and the copper busbar 5 is correspondingly arranged on the support arms 43, which can reduce the material used for the support plate 4 and lower the cost. Reinforcing ribs 44 are connected between adjacent support arms 43 to increase the structural strength of the support plate 4.

[0034] In this application, the terminal block 2 is preferably made of a composite material of PPS (Polyphenylene Sulfide) and GF (Glass Fiber), which can isolate the copper busbar 5 from the motor rear end cover 1 and play a good role in insulation and fixation.

[0035] Embodiment 2:

[0036] A motor includes a front end cover, a rear end cover 1, a rotor and a stator installed between the front end cover and the rear end cover 1. The external terminal block 2 described in Embodiment 1 is installed on the outer end face of the rear end cover 1, and the external power harness and the three-phase wires of the stator are respectively installed on the terminal block 2 through terminal posts.

[0037] The terminal block 2 itself meets the IP67 requirement. After being installed on the outside of the motor, it can reduce the radial dimension of the motor itself. In this way, it can not only meet the layout of the motor in a narrow space, but also save the motor materials and reduce the material cost of the motor itself. The terminal block 2 is installed on the outside of the motor, which can meet the arrangement of the power line forward and backward. One type of motor can meet the customer's needs and increase the range of applicable vehicle models. The junction box cover plate is cancelled, and the customer can directly install the power line on the terminal block 2 when installing the power line, eliminating the problems of the whole machine seal failure and motor insulation failure caused by personnel operation.

[0038] The external wiring seat of the present utility model is integrally injection-molded with a wiring seat body, a support plate, a copper bar, and a nut. The first nut is injection-molded in the installation groove on the wiring seat body. The upper end of the installation groove is open and the lower end is closed, ensuring the sealing performance of the wiring seat, meeting the IP67 sealing requirement, being able to meet the need for installation outside the motor, thereby reducing the radial dimension of the motor itself, saving materials, reducing costs, meeting the requirement of the power harness layout direction, increasing the range of applicable vehicle models, and eliminating the problems of the whole machine sealing failure and motor insulation failure caused by personnel operation problems.

[0039] In the description of this specification, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model.

[0040] In the description of this specification, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0041] Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. These are only illustrative examples, and the protection scope of the present utility model is defined by the claims. Without departing from the principles and essence of the present utility model and without any creative labor, those skilled in the art can make various changes or modifications to these implementation manners, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. An external wiring base, characterized in that, It includes a terminal block body (3), a support plate (4) and a plurality of copper bars (5). The support plate (4) is vertically connected to the lower end of the terminal block body (3). The upper end of the copper bar (5) extends out of the upper end face of the terminal block body (3) for connecting the power harness, and the lower end is arranged on the support plate (4) for connecting the three-phase stator wires. The terminal block body (3), the support plate (4) and the copper bar (5) are integrally injection-molded. The terminal block body (3) is provided with a plurality of mounting grooves (32) for installing terminal posts. A first nut (31) is injection-molded in the mounting groove (32). The wiring holes at the upper end of the copper bar (5) are coaxially arranged and communicated with the first nut (31). The upper end of the mounting groove (32) is open and the lower end is closed.

2. The external wiring base according to claim 1, characterized in that, On both side surfaces of the part of the copper bar (5) injection-molded in the terminal block body (3), a plurality of grooves are staggered.

3. The external wiring base according to claim 1, wherein The end of the copper bar (5) extending out of the upper end face of the terminal block body (3) is bent horizontally, and the mounting groove (32) is arranged vertically.

4. The external wiring base according to claim 3, characterized in that, There are three copper bars (5) and mounting grooves (32) respectively arranged in correspondence.

5. The external wiring base according to any one of claims 1 to 4, characterized in that An isolation plate (35) is arranged on the upper end face of the terminal block body (3), and the isolation plate (35) is arranged between adjacent mounting grooves (32).

6. The external wiring base according to claim 4, wherein The support plate (4) is provided with mounting holes (42) for installing terminal posts. The mounting holes (42) are arranged horizontally. A second nut (41) is injection-molded in the mounting holes (42). The wiring holes at the lower end of the copper bar (5) are coaxially arranged and communicated with the second nut (41).

7. The external wiring base according to claim 6, wherein The support plate (4) is composed of three support arms (43). The copper bars (5) are correspondingly arranged on the support arms (43). A reinforcing rib (44) is connected between adjacent support arms (43).

8. The external wiring base according to claim 1, characterized in that, The terminal block body (3) is provided with a plurality of weight-reducing holes (33).

9. The external wiring base according to claim 1, characterized in that The terminal block body (3) is provided with a plurality of vertically arranged fixing holes (34).

10. A motor, comprising a front end cover, a rear end cover (1), and a rotor and a stator installed between the front end cover and the rear end cover (1), characterized in that, An external terminal block according to any one of claims 1 to 9 is installed on the outer end face of the rear end cover (1). The external power harness and the three-phase wires of the stator are respectively installed on the terminal block (2) through terminal posts.

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