Charging seat

Abstract

The utility model relates to a connecting terminal of a new energy automobile, in particular to a charging seat. The charging seat comprises a terminal body, the terminal body comprises a copper pipe which is formed by cold heading of a copper rod and is not through on the inner side and a flattened section which is formed at one end of the copper pipe through machining after the copper pipe is formed, and a reed is arranged in the terminal body and is fixed through a reed sleeve arranged at the other end of the terminal body. One end of the copper pipe of the terminal body is further provided with an injection molding part connected through injection molding of an injection mold, the injection molding part is arranged on the flattened section in an injection molding mode, and a sealing ring is arranged on the copper pipe of the terminal body and located at the front end of the injection molding part. The terminal body of the charging seat adopts a mode of combining a cold heading process and a patting tube process, so that the defect of poor airtight stability of the patting tube terminal is overcome under the condition of keeping low cost. Moreover, the terminal produced by the method does not need to be protected and sealed again, and has the characteristic of small size.

Description

Technical Field

[0001] The utility model relates to a connecting terminal, in particular to a charging seat. Background Art

[0002] The cost pressure of new energy vehicles is getting higher and higher, and among charging station products, the cost of terminals accounts for a high proportion. How to reduce the cost of terminals has become the direction pursued by every company.

[0003] Currently, most terminals on the market are still processed using copper rod machining technology. Due to the complexity of the terminal structure, this processing technology is inefficient, wastes a lot of waste, and it is difficult to cope with the increasingly severe market competition in terms of cost.

[0004] In this case, several terminal solutions have emerged on the market:

[0005] The first is the cold end solution, which uses cold heading to form the copper rod in one piece. This solution saves materials and is highly efficient, but it has high requirements on the product's appearance and structure, and has many processing restrictions, so it can only be adapted to a small number of products.

[0006] The second solution, the tube-shaped terminal, involves purchasing copper tubes and flattening them for use. This approach offers lower manufacturing costs, but since the charging station must meet IP67 protection requirements, direct overmolding of the terminals with this solution results in poor protection stability and is prone to leaks. Adding glue potting or sealing plugs later compromises both cost and compact size. Utility Model Content

[0007] The utility model aims to solve the above-mentioned defects and provides a charging stand.

[0008] In order to overcome the defects existing in the background technology, the technical solution adopted by the present invention to solve its technical problems is: this charging seat includes a terminal body, the terminal body includes a copper tube with a blocked inner side formed by cold forging a copper rod and a flattened section formed at one end of the copper tube by a tube beating process after the copper tube is formed, a spring is provided inside the terminal body, and is fixed by a spring sleeve arranged at the other end of the terminal body, one end of the copper tube of the terminal body is also provided with an injection molded part connected by injection molding through an injection mold, the injection molded part is injection molded on the flattened section, and a sealing ring is provided on the copper tube of the terminal body and at the front end of the injection molded part.

[0009] According to another embodiment of the present invention, the inner middle section of the copper tube is further provided with a blocking block formed by cold heading of a copper rod, so that the terminal body forms a pipe with a partition in the middle.

[0010] According to another embodiment of the present invention, the terminal body is further provided with a pre-cut notch before the flattened section for reducing the deformation effect of the flattened side on one end of the copper tube, and the cutting position of the notch is located on one side of the blocking block.

[0011] According to another embodiment of the utility model, the terminal body is further provided with a concave ring formed by machining, and the front and rear ends of the concave ring form steps. When the injection molded part is injected, its position is injected on the step at the rear end of the concave ring and the deformed section at the front end of the flattened section, and the sealing ring is sleeved on the concave ring.

[0012] According to another embodiment of the present invention, the spring sleeve is further included as an inner spring sleeve fixed inside the terminal body, or an outer spring sleeve fixed outside the terminal body.

[0013] According to another embodiment of the present invention, the flattening width H of the flattening section is further set to match different welding widths.

[0014] According to another embodiment of the present invention, a step for limiting the spring is further provided on the inner side of the terminal body.

[0015] The beneficial effect of this utility model is that the terminal body of this charging station is produced by combining cold heading and tube-forming processes, which makes up for the shortcomings of tube-forming terminals in terms of poor airtightness and stability while maintaining low costs. Moreover, the terminals produced by this method do not need to be further protected and sealed, while also taking into account the advantages of small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure of the copper tube of the middle terminal body;

[0019] Figure 3 yes Figure 1 Schematic diagram of the structure of the copper tube of the middle terminal body before it is flattened;

[0020] Figure 4 yes Figure 1 Schematic diagram of the structure of the copper tube of the middle terminal body after being flattened;

[0021] Figure 5 It is a structural schematic diagram of an embodiment of the utility model;

[0022] Figure 6 yes Figure 5 Structural diagram of the cross-section view;

[0023] Figure 7 It is a structural schematic diagram of another embodiment of the utility model;

[0024] Figure 8 yes Figure 7 Structural diagram of the cross-section view;

[0025] Among them: 1. Spring sleeve, 2. Spring leaf, 3. Terminal body, 4. Sealing ring, 5. Injection molded part, 6. Flattened section, 7. Concave ring, 8. Spacer, 9. Notch, 10. Copper tube. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, but not all of them. The embodiments of the basic utility model and all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present utility model.

[0027] like Figure 1-4 As shown in the figure, the terminal body 3 is included. The terminal body 3 includes a copper tube 10 with a blocked inner side formed by cold heading of a copper rod and a flattened section 6 formed at one end of the copper tube 10 by a tube-beating process after the copper tube 10 is formed. A spring 2 is provided inside the terminal body 3 and is fixed by a spring sleeve 1 provided at the other end of the terminal body 3. One end of the copper tube of the terminal body 3 is also provided with an injection molded part 5 connected by injection molding. The injection molded part 5 is injection molded on the flattened section 6. A sealing ring 4 is provided on the copper tube of the terminal body 3 and at the front end of the injection molded part 5. The terminal body 3 adopts a combination of cold heading and tube-beating processes to make up for the shortcoming of the poor airtight stability of the tube-beating terminal while maintaining low cost. Moreover, the terminals produced in this way do not need to be protected and sealed again, while taking into account the characteristics of small size.

[0028] like Figure 2 As shown, a block 8 is formed by cold-forging a copper rod inside the middle section of the copper tube 10, forming the terminal body 3 into a pipe with a partition in the middle. To ensure that the copper tube 10 forms a closed structure, a block 8 is formed in the middle section of the inner side during the cold-forging of the solid copper rod. The block 8 isolates the two sides from each other, forming a flattened section 6 on one side and a spring 2 inside the other. This structure eliminates the need for subsequent sealing plugs or other protective processes such as glue potting, reducing costs while shortening the overall length.

[0029] like Figure 3As shown, the terminal body 3 is provided with a pre-cut notch 9 before the flattened section 6 to reduce the deformation effect of the flattened side on one end of the copper tube 10. The notch 9 is cut on one side of the blocking block 8. After the notch 9 is provided, the notch 9 can make the terminal body 3 more deformable and easier to be flattened, and at the same time can shorten the length of the flattened deformation area. Figure 4 When the injection molded part 5 is being injection molded, the flattened deformed area is wrapped by the injection molded part.

[0030] like Figure 4 As shown, the terminal body 3 is provided with a concave ring 7 formed by machining, and the front and rear ends of the concave ring 7 form steps. When the injection molded part 5 is injected, its position is injected on the step at the rear end of the concave ring 7 and the deformed section at the front end of the flattened section 6, and the sealing ring 4 is sleeved on the concave ring 7. The function of the concave ring 7 is to position the sealing ring to prevent it from falling off or no longer in the correct position during installation. At the same time, it improves the surface smoothness of the sealing position and the circular run-out accuracy, making the sealing effect more reliable. When processing the concave ring 7, steps are inevitably formed at the front and rear ends. Due to the structure of the steps, when the injection molded part 5 is injected, its position is buckled on the step at the rear end, thereby improving the adhesion strength of the injection molded part 5.

[0031] The injection molded part 5 can limit the over-installation of the sealing ring and support the terminal in the vehicle charging seat to prevent the terminal from retreating.

[0032] like Figure 5-8 As shown, different machined shapes are added to the top of the copper tube body on the terminal side to match the inner spring sleeve or outer spring sleeve solution, so the spring sleeve 1 is an inner spring sleeve fixed inside the terminal body 3, or an outer spring sleeve fixed outside the terminal body 3.

[0033] The flattening position of the copper tube can be flattened to different widths by using different flattening dies, so that welding terminals of different widths can be matched at a low cost, and the product has strong versatility. That is, the flattening width H of the flattening section 6 is set according to the matching different welding widths.

[0034] The inner side of the terminal body 3 is provided with a step for limiting the position of the spring 2. Depending on the matching spring sleeve, the position of the step for limiting the position of the spring 2 is also different. When it is an outer spring sleeve, the position of the step for limiting the position of the spring 2 is as follows: Figure 5 、 6 As shown, when it is an inner spring sleeve, the position of the step for limiting the spring 2 is as shown in FIG. Figure 7 、 8 shown.

[0035] The overall structure sets the interior of the terminal body 3 as a non-through hole structure, and the sealing ring outside the terminal body 3 is directly assembled on the outside of the copper tube 10, avoiding the airtightness problem caused by inconsistent shrinkage after the plastic part and the metal are combined.

[0036] Figure 1 The charging cradle shown is processed as follows:

[0037] The first step is to take a copper rod and form it into a Figure 2 The copper tube 10 shown has a blocked inner side, i.e., a baffle 8 is formed on the inner side of the copper tube 10 by a cold heading process, so that the copper tube 10 has a blind structure;

[0038] The second step is to process the flattened section 6 on the copper tube 10. Before processing the flattened section 6, a notch 9 is cut on the copper tube 10 in advance. The cutting position of the notch 9 is located on one side of the partition block 8, such as Figure 3 As shown;

[0039] Step 3: machining a concave ring 7 on the copper tube 10 for positioning the sealing ring 4;

[0040] Step 4: Plastic material is directly injected onto the copper tube 10 through an injection mold to form an injection molded part 5. The injection molding position of the injection molded part 5 is on the step at the rear end of the concave ring 7 and the deformed section at the front end of the flattened section 6, that is, on part of the flattened section 6, and also includes the step portion of the concave ring 7 near the flattened section 6;

[0041] Step 5: Process and install different end structures of spring sleeves 1 at the end of the copper tube 10, such as Figure 5 、 6 As shown, it is the structure of the outer spring sleeve, such as Figure 7 、 8 As shown, it is the structure of the inner spring sleeve.

[0042] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A charging stand, comprising a terminal body (3), characterized in that: The terminal body (3) comprises a copper tube (10) whose inner side is blocked by cold heading of a copper rod and a flattened section (6) formed at one end of the copper tube (10) by a tube-beating process after the copper tube (10) is formed. A spring (2) is provided inside the terminal body (3) and is fixed by a spring sleeve (1) provided at the other end of the terminal body (3). An injection molded part (5) connected by injection molding is further provided at one end of the copper tube of the terminal body (3). A sealing ring (4) is provided on the copper tube of the terminal body (3) and at the front end of the injection molded part (5).

2. The charging stand according to claim 1, wherein: The inner middle section of the copper tube (10) is provided with a blocking block (8) formed by cold heading a copper rod, so that the terminal body (3) forms a pipe with a partition in the middle.

3. The charging stand according to claim 1, wherein: The terminal body (3) is provided with a pre-cut notch (9) before the flattened section (6) for reducing the effect of the flattened side on the deformation of one end of the copper tube. The notch (9) is cut at one side of the blocking block (8).

4. The charging stand according to claim 1, wherein: The terminal body (3) is provided with a concave ring (7) formed by machining, and the front and rear ends of the concave ring (7) form steps. When the injection molded part (5) is injection molded, its position is injection molded on the step at the rear end of the concave ring (7) and the deformed section at the front end of the flattened section (6). The sealing ring (4) is sleeved on the concave ring (7).

5. The charging stand according to claim 1, wherein: The spring sleeve (1) is an inner spring sleeve fixed inside the terminal body (3), or an outer spring sleeve fixed outside the terminal body (3).

6. The charging stand according to claim 1, wherein: The flattening width H of the flattening section (6) is set according to matching different welding widths.

7. The charging stand according to claim 1, wherein: The inner side of the terminal body (3) is provided with a step for limiting the spring (2).

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