A high current DC motor terminal block

Abstract

The application belongs to the technical field of motor fittings, and relates to a large-current DC motor junction box. The junction box comprises an upper shell, a lower shell, an inner sealing gasket, an outer sealing gasket, an upper cable sealing gasket and a lower cable sealing gasket. The upper shell and the lower shell are fixed on the shell of the motor, and the motor terminals and the cable terminals of the motor are protected in the motor junction box. The upper cable sealing gasket is attached to the outgoing line end of the upper shell, and the lower cable sealing gasket is attached to the outgoing line end of the lower shell. The upper cable sealing gasket and the lower cable sealing gasket ensure the sealing of the outgoing line of the motor junction box and the fixation of the cable. The outer sealing gasket is attached to the outside of the lower shell, and the cooperation between the lower shell and the shell of the motor is improved through the stress deformation of the outer sealing gasket. The inner sealing gasket is attached to the contact surface between the lower shell and the upper shell, and the cooperation between the lower shell and the upper shell is improved through the stress deformation of the inner sealing gasket, so that the sealing is ensured. Compared with the motor junction boxes of the same current level, the motor junction box has the advantages of simple structure, convenient disassembly and assembly, small size, light weight, good sealing performance and application in various working places.

Description

Technical Field

[0001] This invention belongs to the field of motor accessories technology and relates to a junction box for a high-current DC motor. Background Technology

[0002] Motor junction boxes are used to increase the IP protection rating of motors and prevent contact with live parts of the motor. With the development of permanent magnet motor technology, high-current DC motors are becoming smaller and smaller; high-current DC motors have a wide range of applications, and the requirements for IP protection ratings are becoming increasingly higher; under the same current rating, conventional motor junction box assemblies are larger and heavier, and cannot meet the requirements of certain special applications. Summary of the Invention

[0003] Purpose of the invention

[0004] Under the same current rating, conventional motor junction box assemblies are either large in size or have low protection levels. To address the issues of large size and low protection levels in high-current DC motor junction boxes, this invention provides a DC motor junction box with a simple structure, good sealing performance, small size, and light weight.

[0005] Technical solution

[0006] A high-current DC motor junction box includes an upper housing 1-1-1, a lower housing 1-2-1, an inner sealing gasket 1-2-2, an outer sealing gasket 1-2-6, an upper cable sealing gasket 1-1-3, and a lower cable sealing gasket 1-2-3. The upper housing 1-1-1 and lower housing 1-2-1 are respectively fixed to the housing of a motor 2, protecting the motor terminals 3 and cable terminals 4 of the motor 2 within the junction box. The upper cable sealing gasket 1-1-3 is adhered to the outlet end of the upper housing 1-1-1; the lower cable sealing gasket 1-2-3 is adhered to the outlet end of the lower housing 1-2-1. The upper cable sealing gasket 1-1-3 and lower cable sealing gasket 1-2-3 ensure the sealing of the outlet of the motor junction box and the fixation of the cable. The outer sealing gasket 1-2-6 is adhered to the outside of the lower housing 1-2-1, and the deformation of the outer sealing gasket 1-2-6 under stress improves the fit between the lower housing 1-2-1 and the motor housing. The inner sealing gasket 1-2-2 is adhered to the contact surface between the lower housing 1-2-1 and the upper housing 1-1-1. The deformation of the inner sealing gasket 1-2-2 under force improves the fit between the lower housing 1-2-2 and the upper housing 1-1-1, ensuring a seal.

[0007] Furthermore, the cable outlet size after the upper housing 1-1-1 and the lower housing 1-2-1 are assembled must be larger than the cable size to ensure that the inner sealing gasket 1-2-2 is uniformly deformed under stress, thereby ensuring its sealing.

[0008] Furthermore, after the upper housing 1-1-1 and the lower housing 1-2-1 are assembled, the cable outlet dimensions of the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3 must be smaller than the cable dimensions. After the cable passes through, the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3 will deform under force, thereby ensuring their sealing.

[0009] Furthermore, it also includes a connecting nut, which is embedded in the lower housing 1-2-1 to facilitate the installation of the upper housing 1-1-1.

[0010] Furthermore, it also includes connecting screws, which are installed on the upper housing 1-1-1 and remain on the upper housing 1-1-1 after being separated from the lower housing 1-2-1. This prevents the screws from falling off during the disassembly and assembly process and improves installation efficiency.

[0011] Furthermore, the upper housing 1-1-1 is designed with a partition. After the upper housing 1-1-1 and the lower housing 1-2-1 are connected, two cavities are formed inside the motor junction box through the partition, which increases the safety of the DC motor.

[0012] Furthermore, positioning platforms are installed at the cable outlet positions of the upper housing 1-1-1 and the lower housing 1-2-1 to determine the attachment positions of the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3. This also prevents the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3 from detaching from the motor junction box.

[0013] Furthermore, the connecting screws and nuts are made of metal to improve strength and service life.

[0014] Furthermore, the upper shell 1-1-1 and the lower shell 1-2-1 are made of lightweight and high-strength insulating materials.

[0015] The beneficial effects of this application are as follows:

[0016] The motor junction box described in this invention effectively compensates for the insufficient protection level of high-current DC motors, while avoiding the problem of increasing the size and weight of the motor to meet the protection level. Made of lightweight, high-strength insulating materials, this invention, compared with motor junction boxes of the same current rating, features a simple structure, convenient assembly and disassembly, small size, light weight, and good sealing performance, making it applicable to various workplaces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the motor junction box installation according to the present invention.

[0018] Figure 2 This is a schematic diagram of the motor junction box described in this invention.

[0019] Figure 3 This is a schematic diagram of the assembly relationship of the upper housing components of the motor junction box according to the present invention.

[0020] Figure 4 , Figure 5 This is a schematic diagram of the assembly relationship of the lower housing component of the motor junction box according to the present invention.

[0021] Figure 6 This is a schematic diagram of the upper housing described in this invention.

[0022] Figure 7 This is a schematic diagram of the lower housing described in this invention.

[0023] In the diagram, 1—motor junction box, 2—motor, 3—motor terminal, 4—cable terminal, 1-1—upper housing assembly, 1-2—lower housing assembly, 1-1-1—upper housing, 1-1-2—connecting screw, 1-1-3—upper cable gasket, 1-2-1—lower housing, 1-2-2—inner gasket, 1-2-3—lower cable gasket, 1-2-4—fixing screw, 1-2-5—connecting nut, 1-2-6—outer gasket. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in more detail below. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this invention. The embodiments described below with reference to reference are exemplary and intended to explain this invention, and should not be construed as limiting the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. The embodiments of this invention will be described in detail below.

[0025] A high-current DC motor junction box includes an upper housing 1-1-1, a lower housing 1-2-1, an inner sealing gasket 1-2-2, an outer sealing gasket 1-2-6, an upper cable sealing gasket 1-1-3, and a lower cable sealing gasket 1-2-3. The upper housing 1-1-1 and the lower housing 1-2-1 are made of lightweight and high-strength insulating materials and are fixed to the housing of the motor 2, protecting the motor terminals 3 and cable terminals 4 of the motor 2 inside the junction box, thereby improving the protection level of the motor.

[0026] In one embodiment of the present invention, the upper cable sealing gasket 1-1-3 is adhered to the cable outlet end of the upper housing 1-1-1; the lower cable sealing gasket 1-2-3 is adhered to the cable outlet end of the lower housing 1-2-1. The upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3 have high elasticity, ensuring the sealing of the cable outlet at the motor junction box and the fixation of the cable.

[0027] In one embodiment of the present invention, the outer sealing gasket 1-2-6 is adhered to the outside of the lower housing. The deformation of the outer sealing gasket 1-2-6 under force improves the fit between the lower housing 1-2-1 and the motor housing, thereby ensuring its sealing.

[0028] In one embodiment of the present invention, the inner sealing gasket 1-2-2 is adhered to the contact surface between the lower housing and the upper housing. The inner sealing gasket 1-2-2 deforms under force to improve the fit between the lower housing and the upper housing, thereby ensuring its sealing.

[0029] In one embodiment of the present invention, the wire outlet size after the upper housing 1-1-1 and the lower housing 1-2-1 are assembled must be larger than the cable size to ensure that the inner sealing gasket 1-2-2 is uniformly deformed under force, thereby ensuring its sealing.

[0030] In one embodiment of the present invention, after the upper housing 1-1-1 and the lower housing 1-2-1 are assembled, the cable outlet dimensions of the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3 must be smaller than the cable dimensions. After the cable passes through, the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3 are deformed by force, thereby ensuring their sealing.

[0031] In one embodiment of the present invention, the connecting nut is embedded in the lower housing to facilitate the installation of the upper housing.

[0032] In one embodiment of the present invention, the connecting screw is installed on the upper housing 1-1-1 and remains on the upper housing 1-1-1 after being separated from the lower housing 1-2-1, which can prevent the screw from falling off during the disassembly and assembly process and improve the installation efficiency.

[0033] In one embodiment of the present invention, a partition is designed inside the upper housing 1-1-1. After the upper housing 1-1-1 and the lower housing 1-2-1 are connected, two cavities are formed inside the motor junction box through the partition, which increases the safety of the DC motor.

[0034] In one embodiment of the present invention, positioning platforms are provided at the cable outlet positions of the upper housing 1-1-1 and the lower housing 1-2-1 to determine the bonding positions of the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3. This also prevents the upper cable sealing gasket 1-1-3 and the lower cable sealing gasket 1-2-3 from detaching from the motor junction box.

[0035] In one embodiment of the present invention, the fixing screw, connecting screw, and connecting nut are made of metal to improve strength and service life.

[0036] The present invention will now be described in detail with reference to the accompanying drawings.

[0037] like Figure 1As shown, the high-current DC motor junction box 1 with high reliability and sealing performance of the present invention is installed on the motor 2 to protect the motor terminals 3 and cable terminals 4.

[0038] like Figure 2 As shown, the motor junction box 1 includes an upper housing assembly 1-1 and a lower housing assembly 1-2.

[0039] The upper housing assembly 1-1 includes one upper housing 1-1-1, three connecting nuts 1-1-2, and one upper cable sealing gasket 1-1-3.

[0040] The assembly relationship diagram of the upper shell assembly 1-1 is shown below. Figure 3 The motor junction box upper housing 1-1-1 is as follows Figure 6 First, attach the upper cable sealing gasket 1-1-3 to the upper housing 1-1-1, and then assemble the three connecting screws 1-1-2 to the housing 1-1-1.

[0041] The lower housing assembly 1-2 includes one lower housing 1-2-1, one inner sealing gasket 1-2-2, one lower cable sealing gasket 1-2-3, three fixing screws 1-2-4, three connecting screws 1-2-5, and one outer sealing gasket 1-2-6.

[0042] The assembly relationship diagram of the lower housing assembly 1-2-1 is shown below. Figure 4 , Figure 5 As shown, the lower housing 1-2-1 of the motor junction box is as follows Figure 7 First, embed the three connecting nuts 1-2-5 into the lower housing 1-2-1. Then, attach the lower cable sealing gasket 1-2-3, the inner sealing gasket 1-2-2, and the outer sealing gasket 1-2-6 to the lower housing 1-2-1. Finally, fix the lower housing 1-2-1 to the motor 2 using the three fixing screws 1-2-4.

[0043] After the motor terminal 3 and the cable terminal 4 are connected, the cable is led out from the outlet of the lower housing assembly 1-2-1, and the upper housing assembly 1-1 and the lower housing assembly 1-2 are assembled by the three connecting screws 1-1-2 on the upper housing assembly 1-1.

[0044] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0045] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0046] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Within the spirit and principles of the present invention, any person skilled in the art may use the above-disclosed technical content to make changes or modifications to equivalent embodiments and apply them to other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention, as well as any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of the present invention.

Claims

1. A high-current DC motor junction box, characterized in that, It includes an upper housing, a lower housing, an inner sealing gasket, an outer sealing gasket, an upper cable sealing gasket, and a lower cable sealing gasket; the upper housing and the lower housing are respectively fixed on the motor housing, protecting the motor terminals and cable terminals inside the motor junction box, and the upper cable sealing gasket is attached to the cable outlet end of the upper housing; The lower cable sealing gasket is attached to the cable outlet end of the lower housing; The upper and lower cable sealing gaskets ensure the sealing of the outlet of the motor junction box and the fixation of the cable; the outer sealing gasket is adhered to the outside of the lower housing, and the deformation of the outer sealing gasket under force improves the fit between the lower housing and the motor housing; the inner sealing gasket is adhered to the contact surface between the lower housing and the upper housing, and the deformation of the inner sealing gasket under force improves the fit between the lower housing and the upper housing, ensuring a seal.

2. The junction box as described in claim 1, characterized in that, The cable outlet size after the upper and lower housings are assembled must be larger than the cable size to ensure that the inner sealing gasket is deformed evenly under stress, thereby ensuring its sealing.

3. The junction box as described in claim 1, characterized in that, After the upper and lower housings are assembled, the cable outlet dimensions of the upper and lower cable sealing gaskets must be smaller than the cable dimensions. After the cable passes through, the upper and lower cable sealing gaskets deform under stress, thereby ensuring their seal.

4. The junction box as described in claim 1, characterized in that, It also includes a connecting nut, which is embedded in the lower housing to facilitate the installation of the upper housing.

5. The junction box as described in claim 1, characterized in that, It also includes connecting screws, which are installed on the upper housing and remain on the upper housing after being separated from the lower housing, preventing the screws from falling off during disassembly and assembly and improving installation efficiency.

6. The junction box as described in claim 1, characterized in that, The upper housing is designed with a partition. After the upper and lower housings are connected, two cavities are formed inside the motor junction box through the partition, which increases the safety of the DC motor.

7. The junction box as described in claim 1, characterized in that, Positioning platforms are installed at the cable outlet positions of the upper and lower housings to determine the bonding positions of the upper and lower cable sealing gaskets; at the same time, they prevent the upper and lower cable sealing gaskets from detaching from the motor junction box.

8. The junction box as described in claim 1, characterized in that, The connecting screws and nuts are made of metal to improve strength and service life.

9. The junction box as described in claim 1, characterized in that, The upper and lower shells are made of lightweight, high-strength insulating materials.

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