Automobile charging contact bolt

Abstract

The utility model relates to bolt technical field, specifically is a car charging contact bolt, the utility model discloses the screw rod, the head is inserted and connected and installed to one end of screw rod, and the fastening portion is inserted and connected to the lateral wall of screw rod, and the screw hole is passed through and is established in the middle part of fastening portion, and the screw hole is connected with the lateral wall of screw rod threadedly, and the lateral wall of screw rod is equipped with rubber ring no.

Description

Technical Field

[0001] This utility model relates to the field of bolts, specifically an automotive charging contact bolt. Background Technology

[0002] With the rapid development of the electric vehicle industry, the safety and convenience of charging technology have become an increasingly important focus of the industry. In battery swapping systems, the high-voltage electrical connection between the battery pack and the vehicle needs to be achieved through dedicated charging contacts.

[0003] Traditional high-voltage electrical connections often use charging contact bolts. Traditional bolts only provide mechanical locking and do not have sealing capabilities. The installation interface of the charging contact bolt is prone to micro-gap due to machining tolerances and long-term vibration, which allows contaminants such as moisture and dust to enter, causing oxidation and corrosion of the contact surface, increasing contact resistance, and bringing the risk of overheating or even fire. Therefore, a new type of automotive charging contact bolt is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an automotive charging contact bolt to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A car charging contact bolt includes a screw rod, one end of which is fitted with a head, and a fastening part is fitted into the side wall of the screw rod. A threaded hole is formed through the middle of the fastening part, and the threaded hole is threaded to the side wall of the screw rod. A rubber ring one and a rubber ring two are fitted onto the side wall of the screw rod. The rubber ring one is used to seal between the head and the mounting position, and the rubber ring two is used to seal between the fastening part and the mounting surface. The head and the fastening part are press-fitted together.

[0007] Preferably, the screw sidewall is fitted with a pressure plate one and a pressure plate two, with the pressure plate one located between the head and the rubber ring one, and the pressure plate two located between the fastening part and the rubber ring two.

[0008] Preferably, multiple sets of protrusions are fixedly connected to the first pressure plate, and each set of protrusions is inserted into the first rubber ring; multiple sets of protrusions are fixedly connected to the second pressure plate, and each set of protrusions is inserted into the second rubber ring.

[0009] Preferably, a fixing plate is fixedly connected to one end of the screw, the fixing plate and the pressure plate are pressed together, and a groove is opened in the head, and the fixing plate is inserted into the groove.

[0010] Preferably, the head has multiple sets of insertion holes that are connected to the grooves, and multiple sets of insertion rods are fixedly connected to the fixing plate, with each set of insertion rods being inserted into the multiple sets of insertion holes.

[0011] Preferably, one side wall of the rubber ring is provided with a skirt, the rubber ring and the skirt are integrally formed, and the tail of the skirt is pressed into the bolt mounting surface.

[0012] The beneficial effects of this utility model are:

[0013] This invention features two rubber rings, one at the head and the other at the fastening part. During bolt tightening, these two sealing rings are axially compressed, forming independent, highly elastic sealing rings at the mounting interfaces at both ends of the bolt. This effectively compensates for gaps caused by machining tolerances and shell deformation, prevents water vapor, dust, and other contaminants from entering through the bolt mounting holes and connection interfaces, and prevents increased contact resistance and overheating risks caused by contact oxidation and corrosion. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the contact bolt structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the bolt of this utility model;

[0017] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the exploded structure of this utility model;

[0019] The attached figures are labeled as follows:

[0020] 1. Screw; 3. Head; 4. Fastening part; 5. Groove; 6. Insertion hole; 7. Screw hole; 8. Fixing plate; 9. Pressure plate one; 10. Protrusion one; 11. Rubber ring one; 12. Skirt; 13. Pressure plate two; 14. Protrusion two; 15. Rubber ring two; 16. Insert rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] A type of automotive charging contact bolt, such as Figures 1-4 As shown, the device includes a screw 1, with a head 3 inserted into one end. A fastening part 4 is inserted into the side wall of the screw 1. Both the head 3 and the fastening part 4 are ingot-shaped. The head 3, screw 1, and fastening part 4 are all made of high-strength, high-conductivity copper alloy. A screw hole 7 is provided through the middle of the fastening part 4. The internal thread of the screw hole 7 matches the external thread of the screw 1, so that the fastening part 4 is threaded onto the screw 1. A rubber ring 11 and a rubber ring 15 are fitted on the side wall of the screw 1. The rubber ring 11 is used to seal between the head 3 and the mounting position, and the rubber ring 15 is used to seal between the fastening part 4 and the mounting position. The head 3 and the fastening part 4 are pressed together, so that the charging contact bolt can be fastened.

[0023] Rubber ring 11 and rubber ring 2 15 are respectively provided at the head 3 and the fastening part 4. During the bolt tightening process, these two sealing rings are axially compressed, forming independent, highly elastic sealing rings at the mounting interfaces at both ends of the bolt. This effectively compensates for the gaps caused by machining tolerances and shell deformation, prevents water vapor, dust and other contaminants from entering from the bolt mounting holes and connection interfaces, and prevents the risk of increased contact resistance and overheating caused by contact oxidation and corrosion.

[0024] The screw 1 is fitted with a pressure plate 9 and a pressure plate 13 on its side wall. The pressure plate 9 is located between the head 3 and the rubber ring 11, and the pressure plate 13 is located between the fastening part 4 and the rubber ring 15. When the bolt is turned, the bolt rotates with the pressure plate 9 and the pressure plate 13, causing friction. This prevents the bolt from rotating and causing the rubber ring 11 or the rubber ring 15 to rotate, which would result in wear of the rubber ring 11 and the rubber ring 15.

[0025] Multiple sets of protrusions 10 are fixedly connected to the pressure plate 9, and each set of protrusions 10 is inserted into the rubber ring 11. Multiple sets of protrusions 14 are fixedly connected to the pressure plate 13, and each set of protrusions 14 is inserted into the rubber ring 15. The protrusions 10 and 14 facilitate the installation of the pressure plate 9 and the pressure plate 13, and position and connect the pressure plate and the rubber ring.

[0026] A fixing plate 8 is fixedly connected to one end of the screw 1. The fixing plate 8 and the pressure plate 9 are pressed together. A groove 5 is opened in the head 3. The fixing plate 8 is inserted into the groove 5. The diameter of the fixing plate 8 is larger than the diameter of the screw 1. It is used to press the pressure plate 9 to prevent the pressure plate 9 from detaching from the screw 1, or to prevent the rubber ring 11 from loosening from the mounting surface.

[0027] Multiple sets of insertion holes 6 are opened through the head 3, and all sets of insertion holes 6 are connected to the groove 5. Multiple sets of insertion rods 16 are fixed on the fixing plate 8, and the multiple sets of insertion rods 16 are respectively inserted into the multiple sets of insertion holes 6.

[0028] The head 3 is installed on the fixing plate 8 by means of the insertion hole 6 and the insertion rod 16. After the head 3 is inserted, the screw 1 can be rotated by turning the head 3. After turning, the head 3 can be pulled out to reduce the volume of the head 3 of the bolt. The insertion rod 16 and the fixing plate 8 are integrally formed with the screw 1 to ensure that the current can be transmitted stably.

[0029] The side wall of the rubber ring 11 is provided with a skirt 12. The rubber ring 11 and the skirt 12 are integrally formed. The tail of the skirt 12 is squeezed and fitted with the bolt mounting surface. After being compressed, the skirt 12 bends and deforms, and its tail fits tightly against the bolt mounting hole or the vehicle side connection surface, forming an additional and more adaptable dynamic seal, which further enhances the dustproof and waterproof capabilities.

[0030] The working principle of the automotive charging contact bolt provided by this utility model is as follows:

[0031] Rubber rings and pressure plates are respectively installed at the head 3 and the fastening part 4. During the bolt tightening process, the pressure plate is squeezed and the sealing ring is axially compressed, forming independent, highly elastic sealing rings at the mounting interfaces at both ends of the bolt. This effectively compensates for the gaps caused by machining tolerances and shell deformation, prevents water vapor, dust and other contaminants from entering from the bolt mounting holes and connection interfaces, and prevents the risk of increased contact resistance and overheating caused by contact oxidation and corrosion.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A type of automotive charging contact bolt, characterized in that, The screw (1) is included. A head (3) is inserted into one end of the screw (1). A fastening part (4) is inserted into the side wall of the screw (1). A screw hole (7) is opened through the middle of the fastening part (4). The screw hole (7) is threadedly connected to the side wall of the screw (1). A rubber ring one (11) and a rubber ring two (15) are fitted on the side wall of the screw (1). The rubber ring one (11) is used to seal between the head (3) and the installation position. The rubber ring two (15) is used to seal between the fastening part (4) and the installation surface. The head (3) and the fastening part (4) are squeezed together.

2. The automotive charging contact bolt according to claim 1, characterized in that, The screw (1) is fitted with a pressure plate one (9) and a pressure plate two (13) on its side wall. The pressure plate one (9) is located between the head (3) and the rubber ring one (11), and the pressure plate two (13) is located between the fastening part (4) and the rubber ring two (15).

3. The automotive charging contact bolt according to claim 2, characterized in that, Multiple sets of protrusions (10) are fixedly connected to the pressure plate (9), and each set of protrusions (10) is inserted into the rubber ring (11). Multiple sets of protrusions (14) are fixedly connected to the pressure plate (13), and each set of protrusions (14) is inserted into the rubber ring (15).

4. The automotive charging contact bolt according to claim 1, characterized in that, One end of the screw (1) is fixedly connected to a fixing plate (8), which is pressed together with the pressure plate (9). A groove (5) is provided in the head (3), and the fixing plate (8) is inserted into the groove (5).

5. The automotive charging contact bolt according to claim 4, characterized in that, Multiple sets of insertion holes (6) are provided through the head (3), and the multiple sets of insertion holes (6) are all connected to the groove (5). Multiple sets of insertion rods (16) are fixed on the fixing plate (8), and the multiple sets of insertion rods (16) are respectively inserted into the multiple sets of insertion holes (6).

6. The automotive charging contact bolt according to claim 1, characterized in that, The side wall of the rubber ring (11) is provided with a skirt (12). The rubber ring (11) and the skirt (12) are integrally formed, and the tail of the skirt (12) is squeezed to fit the bolt mounting surface.

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