Connecting device for internal terminal and cable of charging and discharging plug or socket for electric vehicle

Abstract

The utility model provides a connecting device for an internal terminal and a cable of a charging and discharging plug or socket for an electric vehicle, and belongs to the technical field of connecting terminals. Comprising a shell, and a cable is fixedly connected to the outer wall of one end of the shell; the connecting assembly is used for connecting a cable and a shell together, and the connecting assembly is connected with the shell and the cable respectively; the shell and the cable are fixed through a connecting assembly. According to the utility model, through the arrangement of the connecting assembly, not only can the connection of the cable and the shell be realized quickly, but also the operation is simple and convenient in the connecting process, the structures in the connecting assembly are mutually buckled and complemented in function, and the shell with the pin or the plug spring can realize automatic plug-in mounting, so that the working efficiency of workers is improved, and the labor intensity of workers is reduced. And meanwhile, the yield of products is also ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting terminal technical field, especially a kind of inside terminal and cable connecting device of charging and discharging plug or socket for electric vehicle. BACKGROUND

[0002] With the development of new energy, electric vehicles are becoming more and more popular, and electric bicycles and electric motorcycles have become a development trend. Under normal circumstances, the method of charging the battery is to connect by coupling a set of plugs arranged at the charger end and a set of sockets arranged at the motorcycle battery end, and to charge. The method of discharging the battery is to connect by coupling a set of sockets arranged at the motorcycle battery end and a set of plugs arranged at the wire harness assembly end, and to power the motorcycle. Therefore, a plurality of pins need to be arranged inside the plug to communicate with the cable, or the battery, or the charger, or the motorcycle, or to perform potential clamping or interlocking, to provide charging or discharging status to the connected device, thereby ensuring safety and reliability.

[0003] Currently, the pins or spring terminals arranged are connected to the cable by welding or crimping. When connected by welding, the high temperature of the soldering iron easily melts the fastening device of the plastic shell, causing positional deviation, resulting in uncontrolled plug-in force and poor contact, and low welding efficiency. When connected by crimping, due to the spacing and space limitations between terminals, direct crimping is not possible, and the pin with a rivet foot needs to be crimped to the cable before being manually inserted and assembled, which can easily cause the pin to fall off or retreat, and the consistency of the product assembly is not easy to guarantee, and the assembly efficiency is low. Therefore, the utility model provides a connecting device for the internal terminal and cable of the charging and discharging plug or socket for electric vehicles to meet the needs. SUMMARY

[0004] The utility model solves the technical problem of providing a connecting device for the internal terminal and cable of the charging and discharging plug or socket for electric vehicles. By arranging the connecting assembly, the cable and the shell can be quickly connected, the operation is simple and convenient during the connection process, the structures in the connecting assembly are functionally interdependent and complementary, the shell with pins or spring terminals can be automatically inserted and assembled, the working efficiency of workers is improved, and the above arrangement can solve the problems of traditional connection methods, such as the high temperature of the soldering iron easily melting the fastening device of the plastic shell, causing positional deviation, resulting in uncontrolled plug-in force and poor contact reliability, and low welding efficiency. When crimping, due to the spacing and space limitations between terminals, direct crimping is not possible, and the pin with a rivet foot needs to be crimped to the cable before being manually inserted and assembled, which can easily cause the pin to fall off or retreat, resulting in poor contact, the consistency is not easy to guarantee, and the efficiency is low.

[0005] To solve the above technical problems, the utility model provides technical schemes as follows:

[0006] A kind of inside terminal and cable connecting device of electric vehicle charging and discharging plug or socket, including shell, the outer wall of the shell is fixedly connected with cable;Connecting assembly, the connecting assembly is used to connect cable and shell together, the connecting assembly is connected with the shell, the cable respectively;The shell and the cable are fixed by connecting assembly.

[0007] Optionally, the connecting assembly includes a plurality of pin connectors fixedly connected to the outer wall of one end of the shell.

[0008] Optionally, the pin connector is inserted with a cylindrical sleeve pin terminal.

[0009] Optionally, a first spacing groove is formed in the outer wall of the cylindrical sleeve pin terminal.

[0010] Optionally, a first guide portion is fixedly connected to one end of the cylindrical sleeve pin terminal.

[0011] Optionally, a first connecting plate is fixedly connected to the other end of the cylindrical sleeve pin terminal, and a first crimping portion is fixedly connected to one end of the first connecting plate.

[0012] Optionally, a plurality of spring pins are fixedly connected to the outer wall of one end of the shell.

[0013] Optionally, a bullet-shaped pin terminal is sleeved on the spring pin.

[0014] Optionally, a second spacing groove is formed in the outer wall of the bullet-shaped pin terminal, and a second guide portion is provided at one end of the bullet-shaped pin terminal.

[0015] Optionally, a second connecting plate is fixedly connected to the other end of the bullet-shaped pin terminal, and a second crimping portion is fixedly connected to one end of the second connecting plate.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] In the above solution, by setting up connecting components, not only can the connection between the cable and the housing be quickly realized, but the operation is also simple and convenient during the connection process. The internal structures of the connecting components are interlocked and complementary in function. The housing with pins or spring terminals can realize automated insertion, improving the work efficiency of workers. The above settings can solve the problems of traditional connection methods, where the high temperature of the soldering iron can easily melt the fastening device of the plastic housing during soldering, causing positional displacement, resulting in uncontrolled insertion and extraction force, low contact reliability, and low welding efficiency. During crimping, due to the terminal spacing and space limitations, direct crimping is not possible. It is necessary to first crimp the pins with rivets to the cable and then manually insert them, which can easily lead to problems such as detachment and poor contact. In these cases, consistency is not easy to guarantee, and efficiency is low. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of Embodiment 1 of this utility model;

[0020] Figure 2 for Figure 1 Enlarged 3D structural diagram at point A;

[0021] Figure 3 This is a schematic diagram of the overall three-dimensional structure of Embodiment 2 of this utility model;

[0022] Figure 4 for Figure 3 Enlarged 3D structural diagram at point B.

[0023] Figure label:

[0024] 1. Housing; 2. Cable; 3. Pin; 301. Cylindrical sleeve pin terminal; 302. First guide part; 303. First spacer groove; 304. First connecting plate; 305. First crimping part; 4. Spring; 401. Bullet-shaped pin terminal; 402. Second guide part; 403. Second spacer groove; 404. Second connecting plate; 405. Second crimping part.

[0025] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0026] The following is a detailed description of the connection device between the internal terminals and the cable of a charging / discharging plug or socket for an electric vehicle provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0027] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0028] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0029] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0030] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0031] In Example 1, as Figure 1 andFigure 2 As shown, the device includes a housing 1, with a cable 2 fixedly connected to the outer wall of one end of the housing 1; a connecting assembly for connecting the cable 2 to the housing 1, and the connecting assembly is connected to both the housing 1 and the cable 2; the housing 1 and the cable 2 are fixed together by the connecting assembly, which includes a plurality of pins 3 fixedly connected to the outer wall of one end of the housing 1, each pin 3 being inserted into a cylindrical sleeve pin terminal 301, the outer wall of which has a first spacing groove 303, one end of which is fixedly connected to a first guide portion 302, and the other end of which is fixedly connected to a first connecting plate 304, one end of which is fixedly connected to a first crimping portion 305. Specifically, the electrical... One end of cable 2 is fixedly connected to the outer wall of housing 1 via a connecting assembly. The connecting assembly includes several pins 3 fixedly connected to the outer wall of one end of housing 1. The pins 3 are cylindrical, made of metal, and conductive. The outer wall of the pins 3 is inserted into the inner wall of a cylindrical sleeve terminal 301. The cylindrical sleeve terminal 301 is a hollow cylinder made of metal. A first spacing groove 303 is formed on the outer wall of the cylindrical sleeve terminal 301, penetrating both ends of the cylindrical sleeve terminal 301. The guide portion is flared, with the smaller diameter end of the guide portion fixedly connected to one end of the cylindrical sleeve terminal 301. The first spacing groove 303 also penetrates the guide portion. A connecting plate is fixedly connected to the cylindrical sleeve terminal 301. At the other end, the other end of the connecting plate is fixedly connected to the outer wall of the first crimping part 305. The first crimping part 305 is U-shaped and is crimped onto one end of the cable 2. When the operator needs to assemble this device, one end of the cable 2 needs to be crimped onto the first crimping part 305 by the machine. Under the pressure of the machine, the two ends of the U-shaped first crimping part 305 will deform inward, becoming an "8" shape that completely secures the two wires in the cable 2. At this time, the first crimping part 305 and one end of the cable 2 will be connected together. Then, the cylindrical sleeve pin terminal 301 of the crimped cable 2 is inserted into the corresponding coupling end of the pin 3. The cylindrical sleeve pin terminal 301 has an outwardly chamfered guide portion, through... The guide section facilitates quick and easy manual insertion of the cylindrical pin terminal 301 into the corresponding coupling end of the pin 3. When the cylindrical pin terminal 301 is inserted into the pin 3 through the first guide section 302, its diameter is smaller than that of the pin 3. Under tension, the outer wall of the cylindrical pin terminal 301 deforms, expanding the diameter of the cylindrical pin. After the cylindrical pin terminal 301 is fully inserted into the pin, the spring action provided by the deformation of the cylindrical pin terminal 301 makes the inner wall of the cylindrical pin terminal 301 fit more closely with the outer wall of the pin 3, thus making the connection between the two more reliable. The above structure makes the assembly process faster and more convenient for workers, improves production efficiency, and ensures the yield rate of products.

[0032] In Example 2, asFigure 3 and Figure 4 As shown, components identical or corresponding to those in Embodiment 1 are represented by reference numerals corresponding to those in Embodiment 1. A plurality of springs 4 are fixedly connected to the outer wall of one end of the housing 1. Bullet-shaped pin terminals 401 are sleeved on the springs 4. A second spacer groove 403 is formed on the outer wall of the bullet-shaped pin terminal 401. A second guide portion 402 is fixedly connected to one end of the bullet-shaped pin terminal 401, and a second connecting plate 404 is fixedly connected to the other end of the bullet-shaped pin terminal 401. A second crimping portion 405 is fixedly connected to one end of the second connecting plate 404. Specifically, a plurality of springs 4 are fixedly connected to one end of the housing 1. On the outer wall, the inner wall of the spring 4 is fitted onto the bullet-shaped pin terminal 401. The bullet-shaped pin terminal 401 is hollow bullet-shaped and made of metal. A second spacer groove 403 penetrating both ends is formed on the outer wall of the bullet-shaped pin terminal 401. The outer wall of the larger diameter end of the bullet-shaped pin terminal 401 is fixedly connected to the second connecting plate 404. The second crimping part 405 is fixedly connected to the outer wall of one end of the second connecting plate 404. The second crimping part 405 is U-shaped and is crimped onto one end of the cable 2. During assembly, the bullet-shaped pin terminal 401 and the cable 2 need to be connected first. One end is crimped by a machine. Under the pressure of the machine, the first crimping part 305, shaped like a "U", deforms inward at both ends, becoming an "8" shape that completely secures the two wires in the cable 2. At this time, the first crimping part 305 is connected to one end of the cable 2. Then, the crimped bullet-shaped pin terminal 401 is inserted into the corresponding coupling hole of the spring 4. The bullet-shaped pin terminal 401 has a second guide part 402 with an inward chamfer. The second guide part 402 facilitates and allows for quick and easy manual insertion of the bullet-shaped pin terminal 401 into the corresponding coupling hole of the spring 4. When the bullet-shaped pin terminal 401 passes through the second guide part 402... During the insertion of the guide part 402 into the spring 4, its diameter is larger than that of the spring 4. Under the action of the extrusion force, the outer wall of the bullet-shaped pin terminal 401 will deform. After being fully inserted, under the tension provided by the bullet-shaped pin terminal 401, the inner wall of the spring 4 and the outer wall of the bullet-shaped pin terminal 401 are tightly fitted together, making the connection between the bullet-shaped pin terminal 401 and the spring 4 reliable. The above structural design not only allows the workers to fix the cable 2 to the outer wall of the housing 1 more quickly during the assembly process, but also eliminates the need to worry about damage to the housing 1 caused by welding or crimping, thus affecting the product yield.

[0033] The working principle of the technical solution provided by this utility model is as follows: In use, when several pins 3 are fixedly connected to the outer wall of the housing 1, one end of the cable 2 needs to be crimped onto the first crimping part 305 by a machine. The "U"-shaped first crimping part 305 will deform inwards at both ends under machine pressure, pressing and fixing one end of the cable 2 onto the inner wall of the first crimping part 305. Then, the cylindrical sleeve terminal 301, with the crimped cable 2 inserted, is fitted into the corresponding coupling end of the pin 3. 301 has an outwardly chamfered guide portion, which facilitates quick and easy manual insertion of the cylindrical sleeve pin terminal 301 into the corresponding coupling end of the insert pin 3. When the cylindrical sleeve pin terminal 301 is inserted into the spring 4 pin via the first guide portion 302, its diameter is smaller than that of the insert pin 3. Under tension, the outer wall of the cylindrical sleeve pin terminal 301 deforms, expanding the diameter of the cylindrical pin. After the cylindrical sleeve pin terminal 301 is fully inserted into the spring 4 pin, the springback provided by the deformation of the cylindrical sleeve pin terminal 301 causes the cylindrical sleeve... The inner wall of the pin terminal 301 fits more closely to the outer wall of the pin 3, making the connection between them more reliable. When several springs 4 are fixedly connected to the outer wall of the housing 1, the bullet-shaped pin terminal 401 needs to be crimped to one end of the cable 2 by a machine first, and then the crimped bullet-shaped pin terminal 401 is inserted into the corresponding coupling hole of the spring 4. The bullet-shaped pin terminal 401 has an inwardly chamfered second guide portion 402, which facilitates and allows for quick and easy connection of the bullet-shaped pin terminal 401. 1. Manually insert the bullet-shaped pin terminal 4 into the corresponding coupling hole. When the bullet-shaped pin terminal 401 is inserted into the pin 4 through the second guide part 402, its diameter is larger than that of the pin 4. Under the action of the squeezing force, the outer wall of the bullet-shaped pin terminal 401 will deform. After being fully inserted, under the tension provided by the bullet-shaped pin terminal 401, the inner wall of the pin 4 and the outer wall of the bullet-shaped pin terminal 401 are tightly fitted together, making the connection between the bullet-shaped pin terminal 401 and the pin 4 more reliable.

[0034] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A connection device for the internal terminals and cable of a charging / discharging plug or socket for electric vehicles, comprising a housing, characterized in that, A cable is fixedly connected to the outer wall of the housing; A connecting assembly for connecting a cable to a housing, the connecting assembly being connected to both the housing and the cable; The housing and the cable are fixed together by a connecting assembly; The connecting assembly includes a plurality of pins fixedly connected to one end of the housing; The insert pin is connected to a cylindrical sleeve pin terminal; Several springs are fixedly connected to one end of the housing; The spring is fitted with a bullet-shaped pin terminal.

2. The connection device between the internal terminals and the cable of the charging / discharging plug or socket for electric vehicles according to claim 1, characterized in that, The outer wall of the cylindrical sleeve pin terminal is provided with a first interval groove.

3. The connection device between the internal terminals of the charging / discharging plug or socket for electric vehicles and the cable according to claim 1, characterized in that, One end of the cylindrical sleeve pin terminal is fixedly connected to a first guide portion.

4. The connection device between the internal terminals of the charging / discharging plug or socket for electric vehicles and the cable according to claim 1, characterized in that, The other end of the cylindrical sleeve pin terminal is fixedly connected to a first connecting plate, and one end of the first connecting plate is fixedly connected to a first crimping part.

5. The connection device between the internal terminals of the charging / discharging plug or socket for electric vehicles and the cable according to claim 1, characterized in that, A second spacer groove is provided on the outer wall of the bullet-shaped pin terminal, and a second guide portion is fixed at one end of the bullet-shaped pin terminal.

6. The connection device between the internal terminals of the charging / discharging plug or socket for electric vehicles and the cable according to claim 1, characterized in that, The other end of the bullet-shaped pin terminal is fixedly connected to a second connecting plate, and one end of the second connecting plate is fixedly connected to a second crimping part.

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