COMPREHENSIVE SUPPORT AND TERMINAL AND CHARGING DEVICE

Abstract

An integrated holder with a terminal and a charging device is provided. The holder integrated with the terminal includes a support and at least one terminal, wherein an anti-rotation portion is disposed on the terminal and includes a first groove and / or a protrusion disposed on a lateral surface of the terminal, and the holder is formed integrally, at least in part, by injection molding. According to the holder integrated with the terminal provided by the present invention, the terminal and the holder are integrally formed by injection molding, thus eliminating the need to manually plug the terminal into the holder, and not only can performance be improved, but costs can also be reduced.

Description

Bracket and charging device integrated with terminal

[0001] Related applications

[0002] This application claims priority to the Chinese utility model patent application with application number 202122998252.6 filed on December 1, 2021, and cites its disclosed contents as part of this application. Technical Field

[0003] The present application relates to the field of charging technology, and more specifically, to a bracket integrated with a terminal, and a charging device. Background Art

[0004] Currently, new energy batteries used in new energy vehicles all rely on charging systems to recharge. In existing charging systems, terminals are secured to a bracket using a snap-on retaining mechanism. This typically requires manual installation of multiple terminals, each individually secured to the bracket. This installation method is challenging for operators, resulting in low yields and high production costs due to the large number of parts.

[0005] In addition, under this installation method, there is an installation gap between the terminal and the terminal bracket. After the charging system has been used many times, the terminal will shake constantly due to repeated plugging and unplugging, causing the gap between the terminal and the terminal bracket to become larger and larger, which will eventually cause the terminal to shift or detach from the bracket, resulting in the terminal being unable to realize the plug-in function and the charging system failing.

[0006] Therefore, there is an urgent need in the art for a terminal bracket that is easy to assemble, low in cost, and strong and durable.

[0007] Summary of the Invention

[0008] The present application provides a bracket integrated with a terminal, and a charging device, which adopts an integral injection molding method to form the terminal and the bracket as one piece, with low assembly difficulty and low production cost, and the bracket integrated with the terminal is strong and durable.

[0009] The technical solutions provided in this application are as follows.

[0010] An embodiment of the first aspect of the present application provides a bracket integrated with a terminal, comprising a bracket and at least one terminal, an anti-rotation portion being provided on the terminal, the anti-rotation portion comprising a first groove and / or protrusion provided on the side of the terminal, and the bracket being integrally injection molded on at least a portion of the anti-rotation portion.

[0011] An embodiment of the second aspect of the present application provides a charging device, which includes a bracket integrated with a terminal according to an embodiment of the first aspect.

[0012] The features and advantages of this application are:

[0013] 1. The present application provides a bracket integrated with a terminal. Since the terminal and the bracket are formed as one piece by one-piece injection molding, the process of manually inserting the terminal into the bracket is omitted, which not only improves the yield but also reduces labor costs.

[0014] 2. The present application provides a bracket integrated with a terminal. Since the terminal and the bracket are formed as one piece by one-piece injection molding, the number of parts is small, thus simplifying the assembly process.

[0015] 3. The present application provides a bracket integrated with the terminal. Since an anti-rotation portion is provided on the terminal, the axial or radial displacement of the terminal on the bracket is limited, thereby making the connection between the terminal and the bracket more secure. In actual application, even after multiple plugging and unplugging, the terminal is not likely to be displaced or fall off, thereby avoiding failure of the charging system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] FIG1 is a schematic structural diagram of a bracket integrated with a terminal according to an embodiment of the present application;

[0018] FIG2 is a schematic diagram of the position of a blocking ring in a bracket integrated with a terminal according to an embodiment of the present application;

[0019] FIG3 is a schematic diagram of a terminal in a bracket integrated with the terminal according to an embodiment of the present application. DETAILED DESCRIPTION

[0020] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0021] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0022] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0023] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0024] In one embodiment, as shown in Figures 1, 2, and 3, a bracket integrated with a terminal includes: a bracket 1 and at least one terminal 2, wherein the terminal 2 is provided with an anti-rotation portion 21, the anti-rotation portion 21 including a first groove 211 and / or a protrusion provided on a side surface of the terminal, and the bracket 1 is integrally injection molded onto at least a portion of the anti-rotation portion 21. In a preferred embodiment, the first groove 211 or protrusion is provided on the side surface of the terminal 2 along the radial direction of the terminal 2.

[0025] The purpose of the anti-rotation portion 21 is to prevent the terminal 2 from shifting on the bracket 1, both axially and radially. In the prior art, an operator manually inserts the terminals 2 into the bracket 1 one by one. This method, in actual use, can cause the terminals 2 to become loose on the bracket 1 after repeated insertion and removal from the mating terminals. In severe cases, the terminals 2 may fall off the bracket 1, causing the entire charging device to fail.

[0026] The anti-rotation portion 21 is integrally formed with the terminal 2, requiring no additional processing and not increasing the difficulty of the production process. The anti-rotation portion 21 can be a protrusion alone, a groove alone, or a combination of a protrusion and a groove. When integrally injection-molded with the bracket 1, the injection molding material wraps around the protrusion or fills the groove to form a snap-fit ​​structure. The terminal 2 and bracket 1 combined in this manner are very secure and will not come loose even after repeated insertion and removal of the terminal 2 and the mating terminal.

[0027] The bracket 1 includes opposing end faces and side faces connected to the end faces. The end faces of the bracket 1 include at least one through-hole, and the anti-rotation portion 21 is at least partially disposed within the through-hole. In actual production, the number of through-holes in the bracket 1 matches the number of terminals. During injection molding, as many through-holes as there are terminals, the bracket 1 will be formed with as many through-holes. The outer surface of the anti-rotation portion 21 may be completely or partially contained within the through-hole.

[0028] In this embodiment, the ratio of the total cross-sectional area of ​​the anti-rotation portion to the area of ​​one end face of the bracket 1 is 1%-66%. In practical applications, if the bracket 1 carries more terminals 2 or the terminals have larger diameters, the bracket 1 may have less portion connected to the terminals 2.

[0029] Specifically, the larger the cross-section of the anti-rotation portion 21 on the terminal 2, the smaller the area occupied by the injection-molded portion of the bracket 1. When the ratio of the two reaches a certain value, although the bracket 1 can connect each terminal 2, it is already quite fragile and may be damaged by vibration at any time during actual work. If the number or diameter of the terminals 2 set is too small, that is, the area of ​​the anti-rotation portion 21 on the bracket is too small, the bracket 1 occupies a large working area and cannot play its due role, which is also inappropriate. Therefore, the inventor selected the same bracket 1 and terminals 2 with different total cross-sectional areas of the anti-rotation portion 21 for testing, and divided them into 11 groups to verify the strength of the bracket 1 under different ratios of the total cross-sectional area of ​​the anti-rotation portion 21 to the area of ​​one end face of the bracket 1.

[0030] The strength test method involves free-falling the integrated terminal bracket from a height of 2 meters. After each set of drops, bracket 1 is observed for damage. If damage is present, the bracket fails. The test results are shown in Table 1.

[0031] Table 1: Effect of the ratio of the total cross-sectional area of ​​the terminal anti-rotation portion to the area of ​​one end face of the bracket on the bracket strength

[0032] Ratio (%) 18253947505762667073 Is the bracket damaged? No No No No No No No No No Yes Yes

[0033] As can be seen from Table 1, when the ratio of the total cross-sectional area of ​​the anti-rotation portion 21 to the area of ​​one end face of the bracket 1 is between 1% and 66%, the bracket integrated with the terminal is not damaged when dropped from a height of 2 meters. When the ratio of the total cross-sectional area of ​​the anti-rotation portion 21 to the area of ​​one end face of the bracket 1 is greater than 66%, the bracket 1 is damaged when dropped from a height of 2 meters. When the ratio of the total cross-sectional area of ​​the anti-rotation portion 21 to the area of ​​one end face of the bracket 1 is less than 1%, the area of ​​the anti-rotation portion 21 on the bracket is too small, and the bracket 1 occupies a large working area without being able to play its due role. Therefore, the inventors selected a ratio of the total cross-sectional area of ​​the anti-rotation portion 21 to the area of ​​one end face of the bracket 1 of 1% to 66%.

[0034] In a preferred embodiment, the anti-rotation portion 21 further includes an auxiliary surface 212, which is a non-circular flat surface, curved surface, or folded surface provided on the side of the terminal 2. The auxiliary surface 212 is located on the side of the terminal 2. The auxiliary surface 212 can be directly processed on the terminal 2 using a process such as stamping, milling, or forging. The cross-section of the anti-rotation portion 21 having the auxiliary surface 212 is non-circular. This is done to further secure the connection between the terminal 2 and the bracket 1 and prevent the terminal 2 from rotating during actual use.

[0035] In this embodiment, the ratio of the surface area of ​​the auxiliary surface 212 to the total contact area between the anti-rotation portion 21 and the bracket 1 is 10%-100%. The larger the surface area of ​​the auxiliary surface 212, the better the anti-rotation effect. When the ratio of the surface area of ​​the auxiliary surface 212 to the contact area between the terminal 2 and the bracket 1 is 100, it means that the anti-rotation portion 21 has multiple auxiliary surfaces 212, that is, the cross-section of the anti-rotation portion 21 does not have an arc shape, such as a triangle, a square or a polygon. However, multiple auxiliary surfaces 212 mean that cutting is complicated and requires high processing costs, and if the auxiliary surface 212 is too small, the anti-rotation effect is not up to standard. In order to find a suitable ratio of the surface area of ​​the auxiliary surface 212 to the contact area between the anti-rotation portion 21 and the bracket 1, the inventor selected the same terminal 2, each terminal 2 having a different auxiliary surface 212 for testing, and the characteristics of the brackets selected for each group of tests were also the same.

[0036] During the test, the bracket 1 was integrally injection-molded onto different terminals 2 on the auxiliary surface 212. These terminals were then divided into 12 groups. The same axial rotational force of 600N was then applied to the terminals 2 in each group. If any terminal 2 rotated, the terminal failed the test. The test results are shown in Table 2.

[0037] Table 2: Effect of the ratio of the surface area of ​​the auxiliary surface to the contact area between the anti-rotation part and the bracket on the anti-rotation ability

[0038]

[0039] As can be seen from Table 2, the ratio of the surface area of ​​the auxiliary surface 212 to the contact area between the anti-rotation portion 21 and the bracket 1 is 10%-100%. When an axial rotational force is applied to the terminal 2, the terminal 2 does not rotate. When the ratio is less than 10%, the terminal 2 rotates. Therefore, the inventor chooses the ratio of the surface area of ​​the auxiliary surface 212 to the contact area between the anti-rotation portion 21 and the bracket 1 to be 10%-100%.

[0040] In a preferred embodiment, the terminal 2 is connected to the cable to achieve current conduction, and the terminal also includes a connecting portion 22, one end of the connecting portion 22 is connected to one end of the anti-rotation portion 21, and the other end is connected to the conductive part of the cable. The connecting portion 22 can be integrally formed with the anti-rotation portion 21, or the two can be produced separately according to actual needs. In actual application, it can be welded with the terminal that does not include the connecting portion 22 according to different situations, and the welding method is one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding, and magnetic induction welding. The material of the connecting portion 22 can also be produced in a diversified manner according to actual needs. The material can be copper or copper alloy or aluminum or aluminum alloy. The connection method between the connecting portion 22 and the cable is crimping or welding, and the welding method is one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding, and magnetic induction welding.

[0041] In a preferred embodiment, the terminal 2 further includes an extension portion 23, one end of which is connected to the end of the anti-rotation portion away from the connection portion. The anti-rotation portion 21 is partially or completely fixed in the bracket 1. With the bracket 1 as the plane of symmetry, the connection portion 22 is located on one side of the bracket 1, and the extension portion 23 is located on the other side of the bracket 1. The extension portion 23 is provided primarily to increase the length of the terminal 2. During actual assembly, the extension portion 23 can be connected to the circuit board of the charging device.

[0042] In a preferred embodiment, the terminal 2 further includes a blocking ring 24, which is a peripheral protrusion provided at one end of the extension 23 close to the bracket 1. The peripheral protrusion can be integrally formed with the terminal during actual production. In this case, the blocking ring 24 and the terminal 2 are made of the same material. Alternatively, the blocking ring 24 can be co-injected onto the terminal 2 together with the bracket 1 when the bracket 1 is injection-molded onto the terminal 2. In this case, the blocking ring 24 and the bracket 1 are made of the same material. The purpose of providing the blocking ring 24 is to further secure the terminal 2 on the bracket 1 to prevent the terminal 2 from being detached from the bracket 1 due to frequent plugging and unplugging during subsequent use.

[0043] In a preferred embodiment, the portion of the terminal 2 away from the cable is connected to an electrical device to conduct current to the electrical device. The terminal 2 also includes a contact portion 25, one end of which is connected to the end of the extension 23 away from the anti-rotation portion 22, for plugging into the plug-in terminal on the electrical device. The contact portion 25 can be integrally formed with the terminal 2, or produced separately according to actual needs. In actual application, it can be welded to the terminal that does not include the contact portion 25 according to different situations. The welding method is one or more of resistance welding, friction welding, ultrasonic welding, arc welding, laser welding, electron beam welding, pressure diffusion welding, and magnetic induction welding. The material of the contact portion 25 can also be diversified according to actual needs. The material can be copper or copper alloy or aluminum or aluminum alloy.

[0044] In a preferred embodiment, a fixing portion 26 is provided between the contact portion 25 and the extension portion 23, and the fixing portion 26 protrudes from the side of the terminal 2. The purpose of providing the fixing portion 26 is to position the terminal 2 during actual use, and it can also make the connection between the terminal 2 and the circuit board or other electrical devices in the electrical device more firmly.

[0045] Furthermore, a second groove may be provided on the fixing portion 26, and a sealing ring 261 may be provided in the second groove. Furthermore, the sealing ring 261 and the bracket 1 are integrally formed with the terminal 2 by two-color injection molding.

[0046] The present application also provides a charging device, which includes the bracket 1 integrated with the terminal 2. The charging device equipped with the bracket 1 described herein has better stability.

[0047] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A bracket integrated with a terminal, comprising a bracket and at least one terminal, characterized in that, The terminal is provided with an anti-rotation part, the anti-rotation part including a first groove and / or protrusion provided on the side of the terminal, and the bracket is integrally injection molded on at least a portion of the anti-rotation part.

2. The bracket integrated with the terminal according to claim 1, characterized in that, The bracket includes opposing end faces and side faces connected to the end faces. The end faces of the bracket include at least one through hole, and the anti-rotation part is at least partially disposed in the through hole.

3. The bracket integrated with the terminal according to claim 2, characterized in that, The ratio of the total cross-sectional area of ​​the anti-rotation part to the area of ​​one end face of the bracket is 1%-66%.

4. The bracket integrated with the terminal according to claim 1, characterized in that, The first groove and / or protrusion are provided on the side of the terminal along the radial direction of the terminal.

5. The bracket integrated with the terminal according to claim 1, characterized in that, The anti-rotation part also includes an auxiliary surface, which is a non-circular plane, curved surface, or folded surface disposed on the side of the terminal.

6. The bracket integrated with the terminal according to claim 5, characterized in that, The surface area of ​​the auxiliary surface accounts for 10%-100% of the total contact area between the anti-rotation part and the bracket.

7. The bracket integrated with the terminal according to claim 1, characterized in that, The terminal is connected to the cable to conduct current. The terminal also includes a connecting part, one end of which is connected to one end of the anti-rotation part, and the other end is connected to the conductive part of the cable.

8. The bracket integrated with the terminal according to claim 7, characterized in that, The terminal also includes an extension, one end of which is connected to the end of the anti-rotation portion away from the connecting portion.

9. The bracket integrated with the terminal according to claim 8, characterized in that, The terminal also includes a blocking ring, which is a peripheral protrusion disposed at one end of the extension near the bracket.

10. The bracket integrated with the terminal according to claim 8, characterized in that, The portion of the terminal away from the cable is connected to the electrical device to conduct current to the electrical device. The terminal also includes a contact portion, one end of which is connected to the end of the extension portion away from the anti-rotation portion, for insertion into the plug-in terminal on the electrical device.

11. The bracket integrated with the terminal according to claim 10, characterized in that, A fixing part is provided between the contact part and the extension part, and the fixing part protrudes from the side of the terminal for positioning the terminal.

12. The bracket integrated with the terminal according to claim 11, characterized in that, A second groove is provided on the fixing part, and a sealing ring is provided in the second groove. The sealing ring and the bracket are integrally formed by two-color injection molding.

13. A charging device, characterized in that, The charging device includes the bracket integrated with the terminal as described in any one of claims 1 to 12.

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