A sealing structure of IP67 protection grade and electrical equipment

Abstract

The utility model discloses a new energy automobile electrical equipment technical field's a kind of sealing structure and electrical equipment of IP67 protection grade, sealing structure includes waterproof rubber ring, waterproof rubber ring is located between electrical equipment terminal and cable, and terminal outside is equipped with rubber ring compression sleeve, waterproof rubber ring includes rubber ring body, and the head of rubber ring body is equipped with compression ring, and rubber ring compression sleeve includes sleeve set in the sleeve of terminal outside, and sleeve one end is equipped with pressing plate, and cable and rubber ring body interference fit, and terminal and rubber ring body interference fit, and the inner wall and outer wall of rubber ring body are all equipped with waterproof batten. The utility model is compressed twice by waterproof rubber ring and cable, terminal interference fit, and combines inside and outside waterproof batten and rubber ring compression sleeve, carries out two compression sealing, constructs composite sealing system, improves sealing reliability and stability, so that the protection grade of electrical equipment reaches IP67, improves electrical equipment safety performance.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment for new energy vehicles, specifically to a sealing structure and electrical equipment with an IP67 protection rating. Background Technology

[0002] With the rapid development of the new energy vehicle industry, its supporting charging equipment (such as charging boxes and charging piles) needs to operate in various complex outdoor environments for extended periods, placing extremely high demands on waterproof and dustproof performance. Currently, most charging equipment on the market only achieves an IP66 protection rating, which completely prevents dust ingress and can withstand strong wave impacts or intense water spray without damage. Their sealing structures often employ a single static sealing ring, relying on simple compression between the rubber ring and the interface to achieve a seal. This type of structure is highly susceptible to moisture or dust intrusion due to insufficient sealing pressure and a simplistic design when the equipment is accidentally dropped into water or exposed to high humidity and dust environments for extended periods. This can cause short circuits or damage to internal electrical components, severely restricting the safety and environmental adaptability of the charging equipment. Therefore, there is an urgent need for a sealing solution that is structurally sound, reliably sealed, easy to assemble, and can reliably achieve an IP67 protection rating. Utility Model Content

[0003] The purpose of this utility model is to provide a sealing structure and electrical equipment with an IP67 protection rating, which solves the problem of insufficient protection level of existing electrical equipment in new energy vehicles.

[0004] This utility model achieves the above objectives through the following technical solutions: An IP67 protection rating sealing structure is disclosed for sealing the gap between an electrical equipment terminal and a cable. The sealing structure includes a waterproof rubber ring disposed between the terminal and the cable, and a rubber ring compression sleeve is provided on the outside of the terminal. An IP67 protection rating indicates that the electrical equipment is completely dustproof and can withstand immersion in water for a certain period or under pressure below a certain standard without damage from water ingress.

[0005] The waterproof rubber ring includes a rubber ring body, the head of the rubber ring body protrudes outward to form a clamping ring, and the rubber ring clamping sleeve includes a sleeve fitted on the outside of the wiring port, one end of the sleeve protruding inward to form a pressure plate.

[0006] The cable is interference-fitted with the inner wall of the rubber ring body, and the connector is interference-fitted with the outer wall of the rubber ring body. The inner and outer walls of the rubber ring body are respectively provided with internal waterproof ribs and external waterproof ribs. The pressure plate is used to press the clamping ring tightly against the outer end of the connector.

[0007] As a further optimization of this utility model, in its natural state, the inner diameter of the rubber ring body is smaller than the outer diameter of the cable, and the outer diameter of the rubber ring body is larger than the inner diameter of the connector.

[0008] As a further optimization of this utility model, the clamping ring is provided with a waterproof head rib on the side near the pressure plate.

[0009] As a further optimization of this utility model, the head of the rubber ring body is provided with an annular step, and the step is located at one end of the rubber ring body.

[0010] As a further optimization of this utility model, the other end of the rubber ring body is provided with a chamfer.

[0011] As a further optimization of this utility model, an elliptical inclined surface is provided on one side of the sleeve, and the inner wall of the sleeve is interference-fitted with the wiring port.

[0012] An electrical device with an IP67 protection rating includes a housing with a wiring port, a plurality of electrical components are disposed inside the housing, a cable is disposed inside the wiring port, and a sealing structure with the IP67 protection rating is provided on the wiring port.

[0013] As a further optimization of this utility model, the inner side of the wiring port is provided with a water-locking ring that corresponds one-to-one with the external waterproof rib strip, and the water-locking ring is used to abut against the external waterproof rib strip.

[0014] As a further optimization of this utility model, the box body is elastically connected with multiple locking components. The cross-section of the locking components is L-shaped. The locking components are used to lock the rubber ring compression sleeve so that the outer waterproof ribs of the waterproof rubber ring tightly abut against the water-locking ring.

[0015] As a further optimization of this utility model, the inner edge of the outer end of the wiring port is provided with an annular groove corresponding to the clamping ring.

[0016] The beneficial effects of this utility model are as follows: This utility model constructs a multi-layered, multi-directional composite sealing system by forming a bidirectional interference fit between the waterproof rubber ring and the cable and the connection port, and by combining the design of multiple waterproof ribs inside and outside with the axial pressing structure of the rubber ring compression sleeve. This significantly improves the sealing reliability and stability, enabling the electrical equipment to reach the IP67 protection level as a whole, and effectively solving the problem that existing electrical equipment is prone to short circuit damage when it falls into water. This utility model enhances the clamping force and sealing fit between the sealing interfaces by setting a waterproof rib at the head of the clamping ring and causing it to undergo radial elastic deformation under the action of the clamping sleeve, preventing water from seeping in along the axial direction and improving the reliability of the sealing structure under long-term use or sudden water immersion. This utility model sets a water-locking ring inside the wiring port that corresponds to the external waterproof rib, and locks and positions the rubber ring compression sleeve by a locking component, so that the pressure plate of the rubber ring compression sleeve presses the waterproof rubber ring, thereby making the external waterproof rib tightly attached to the water-locking ring and improving the sealing effect; The waterproof rubber ring of this utility model has a chamfered tail and a stepped head structure, which not only facilitates assembly and improves production efficiency, but also enhances the fit stability and sealing consistency between the clamping sleeve and the rubber ring. The structure is simple and practical and suitable for large-scale promotion and use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 This is a schematic diagram of the waterproof rubber ring structure of this utility model; Figure 3 This is a cross-sectional view of the waterproof rubber ring of this utility model; Figure 4 This is a cross-sectional view of the rubber ring clamping sleeve of this utility model; Figure 5 This is a sectional view of the box body of this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle; In the diagram: 1. Waterproof rubber ring; 2. Rubber ring clamping sleeve; 3. Box body; 4. Electrical components; 5. Water-locking ring; 6. Locking component; 11. Rubber ring body; 12. Clamping ring; 13. Internal waterproof rib; 14. External waterproof rib; 15. Head waterproof rib; 16. Step; 17. Chamfer; 21. Sleeve; 22. Pressure plate; P. Wiring port; C. Cable. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0019] First Embodiment like Figure 1 As shown, this embodiment relates to a sealing structure with an IP67 protection rating, used to seal the gap between the terminal P of an electrical device and the cable C. The sealing structure includes a waterproof rubber ring 1, which is disposed between the terminal P and the cable C. The inner and outer walls of the waterproof rubber ring 1 are interference-fitted with the cable C and the terminal P, respectively, thereby sealing the gap. A rubber ring clamping sleeve 2 is provided on the outside of the terminal P, which ensures that the waterproof rubber ring 1 is tightly fitted to the terminal P and enhances the sealing effect of the waterproof rubber ring 1.

[0020] Specifically, please refer to Figure 2-4 The waterproof rubber ring 1 includes a rubber ring body 11, the head of which protrudes outward to form a clamping ring 12. The rubber ring clamping sleeve 2 includes a sleeve 21 fitted onto the outside of the connector P, one end of which protrudes inward to form a pressure plate 22. In its natural state, the inner diameter of the rubber ring body 11 is smaller than the outer diameter of the cable C, and the outer diameter of the rubber ring body 11 is larger than the inner diameter of the connector P.

[0021] In this embodiment, the inner diameter of the rubber ring body 11 is 8.5 mm, the outer diameter of the cable C is 10 mm, and the cable C is press-fitted with the inner wall of the rubber ring body 11. The outer diameter of the rubber ring body 11 is 20 mm, the inner diameter of the connector P is 18 mm, and the connector P is press-fitted with the outer wall of the rubber ring body 11. Multiple internal waterproof ribs 13 and external waterproof ribs 14 are respectively provided on the inner and outer walls of the rubber ring body 11. The pressure plate 22 is used to press the clamping ring 12 tightly against the outer end of the connector P. In this embodiment, the number of both internal waterproof ribs 13 and external waterproof ribs 14 is preferably three.

[0022] The gap between the connector P and the cable C is sealed by using a waterproof rubber ring 1 and a rubber ring clamping sleeve 2. The sealing operation consists of the following two steps: First, the waterproof rubber ring 1 is fitted onto the cable C. The inner wall of the rubber ring body 11 is press-fitted with the outer surface of the cable C, and the inner wall of the rubber ring body 11 has multiple internal waterproof ribs 13 to enhance the sealing effect. The rubber ring body 11 and the internal waterproof ribs 13 are used to compress and seal the connection, so that the protection level at the connection between the waterproof rubber ring 1 and the cable C reaches IP67.

[0023] Next, the waterproof rubber ring 1, along with the cable C, is inserted into the connector P. The outer wall of the rubber ring body 11 is press-fitted with the inner wall of the connector P, and the outer wall of the rubber ring body 11 is provided with multiple external waterproof ribs 14 to enhance the sealing effect. In addition, a rubber ring compression sleeve 2 is fitted on the outside of the connector P. The compression plate 22 of the rubber ring compression sleeve 2 presses the compression ring 12 tightly against the outer end of the connector P, further enhancing the sealing effect. Through the secondary compression and sealing by the rubber ring body 11 in conjunction with the external waterproof ribs 14 and the rubber ring compression sleeve 2, the protection level at the connection between the waterproof rubber ring 1 and the connector P reaches IP67. This embodiment cleverly utilizes the waterproofness and extensibility of the waterproof sleeve. Through the above two-step compression and sealing, the assemblability of the sealing structure is ensured, and the protection level of the electrical equipment reaches IP67. The sealing structure of this embodiment is particularly suitable for charging equipment, which can effectively solve the waterproof and dustproof problems of charging equipment outdoors. The charging equipment can be charged in an area with a depth of 1 meter of water, and the charging equipment will not be damaged if it is accidentally dropped into the water.

[0024] Additionally, the clamping ring 12 has a waterproof head rib 15 on the side near the pressure plate 22. The pressure plate 22 is annular. The head of the rubber ring body 11 has an annular step 16, and the step 16 is located at one end of the rubber ring body 11. The other end of the rubber ring body 11 has a chamfer 17. One side of the sleeve 21 has an elliptical bevel, and the inner wall of the sleeve 21 is interference-fitted with the wiring port P.

[0025] By providing a waterproof head rib 15 on the clamping ring 12, the sealing performance between the pressure plate 22 and the clamping ring 12 is improved. In addition, when the pressure plate 22 presses the clamping ring 12 through the waterproof head rib 15, the clamping ring 12 can be extended radially, which can enhance the sealing effect of the waterproof rubber ring 1 and prevent water from entering the electrical equipment from the wiring port P when the electrical equipment is submerged in water.

[0026] The head of the rubber ring body 11 has a step 16. When the pressure plate 22 squeezes the clamping ring 12, it can fit against the step 16, further improving the sealing between the rubber ring clamping sleeve 2 and the waterproof rubber ring 1. A chamfer 17 is provided at the tail of the rubber ring body 11, making it easier for the rubber ring body 11 to be inserted into the wiring port P. The sleeve 21 has an elliptical bevel on the side away from the pressure plate 22, so that the sleeve 21 can be fitted onto the outside of the wiring port P.

[0027] Second Embodiment This embodiment relates to an electrical device with an IP67 protection rating. The electrical device includes a housing 3, and the housing 3 has a connection port P. The housing 3 is preferably made of plastic. Several electrical components 4 are disposed inside the housing 3, and a cable C is disposed inside the connection port P. The connection port P is provided with a sealing structure of the IP67 protection rating of the first embodiment. This sealing structure achieves secondary compression sealing of the electrical device.

[0028] In this embodiment, both sides of the box 3 are provided with connection ports P, and each connection port P contains a cable C. One cable C is the charging cable for the vehicle end, and the other cable C is the power supply cable for the power supply end. The two cables C are electrically connected by the electrical components 4 inside the box 3, thereby enabling the charging of new energy vehicles. The inner edge of the outer end of the connection port P is provided with an annular groove corresponding to the clamping ring 12. The outer end of the connection port P is the end facing the outside of the box 3, and the other end of the connection port P is the inner end. It should be noted that the electrical device in this embodiment is a charging box. In other embodiments, the device may also be an electrical protection box or other electrical devices, and the number of connection ports P and cables C may be adjusted according to the actual situation.

[0029] In addition, such as Figure 5 and Figure 6As shown, in some other embodiments, a water-locking ring 5 and a locking member 6 are also provided on the housing 3. Specifically, a water-locking ring 5 is provided on the inner side of the wiring port P, corresponding one-to-one with the external waterproof ribs 14. The water-locking ring 5 is used to abut against the external waterproof ribs 14 on the rubber ring body 11 to enhance the sealing effect. Multiple locking members 6 are elastically connected on the housing 3. The cross-section of the locking member 6 is L-shaped. The locking member 6 is used to lock the rubber ring compression sleeve 2 so that the external waterproof ribs 14 of the waterproof rubber ring 1 are tightly against the water-locking ring 5. The locking member 6 is connected to the housing 3 through an elastic structure. This elastic structure can be a spring or an elastomer made of polyurethane or rubber.

[0030] When the waterproof rubber ring 1 is inserted into the connection port P, each of the external waterproof ribs 14 abuts against one side of the corresponding water-locking ring 5. For the water-locking ring 5 and the external waterproof ribs 14 that abut against each other, the distance between the water-locking ring 5 and the inner end of the connection port P is smaller than the distance between the external waterproof ribs 14 and the inner end of the connection port P. After the external waterproof ribs 14 abut against the water-locking ring 5, the locking member 6 is snapped onto the rubber ring compression sleeve 2, so that the inner side of the locking member 6 is in contact with the outer side of the rubber ring compression sleeve 2. At this time, the elastic structure is in a stretched state, providing tension to the locking member 6, so that the locking member 6 squeezes the rubber ring compression sleeve 2, and the pressure plate 22 of the rubber ring compression sleeve 2 presses the waterproof rubber ring 1, thereby making the external waterproof ribs 14 tightly adhere to the water-locking ring 5, further improving the sealing effect.

[0031] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A sealing structure with an IP67 protection rating, said sealing structure being used to seal the gap between the wiring port of electrical equipment and the cable, characterized in that: The sealing structure includes a waterproof rubber ring (1), which is located between the connector and the cable, and a rubber ring compression sleeve (2) is provided on the outside of the connector. The waterproof rubber ring (1) includes a rubber ring body (11), the head of the rubber ring body (11) protrudes outward to form a clamping ring (12); the rubber ring clamping sleeve (2) includes a sleeve (21) sleeved on the outside of the wiring port, one end of the sleeve (21) protrudes inward to form a pressure plate (22); the cable is interference-fitted with the inner wall of the rubber ring body (11), the wiring port is interference-fitted with the outer wall of the rubber ring body (11), the inner wall and outer wall of the rubber ring body (11) are respectively provided with an inner waterproof rib (13) and an outer waterproof rib (14), and the pressure plate (22) is used to press the clamping ring (12) against the outer end of the wiring port.

2. The sealing structure with IP67 protection rating according to claim 1, characterized in that: In its natural state, the inner diameter of the rubber ring body (11) is smaller than the outer diameter of the cable, and the outer diameter of the rubber ring body (11) is larger than the inner diameter of the connector.

3. The sealing structure with IP67 protection rating according to claim 1, characterized in that: The clamping ring (12) has a head waterproof rib (15) on the side near the pressure plate (22).

4. The sealing structure with IP67 protection rating according to claim 1, characterized in that: The head of the rubber ring body (11) is provided with an annular step (16), and the step (16) is located at one end of the rubber ring body (11).

5. The sealing structure with IP67 protection rating according to claim 1, characterized in that: The other end of the rubber ring body (11) is provided with a chamfer (17).

6. The sealing structure with IP67 protection rating according to claim 1, characterized in that: The sleeve (21) has an elliptical inclined surface on one side, and the inner wall of the sleeve (21) is interference-fitted with the wiring port.

7. An electrical device with an IP67 protection rating, the electrical device comprising a housing (3) having a wiring port on the housing (3), characterized in that: The box (3) is provided with several electrical components (4), the wiring port is provided with cables, and the wiring port is provided with a sealing structure with IP67 protection level as described in any one of claims 1-6.

8. The electrical equipment with IP67 protection rating according to claim 7, characterized in that: The inner side of the connection port is provided with a water-locking ring (5) that corresponds one-to-one with the external waterproof rib (14). The water-locking ring (5) is used to abut against the external waterproof rib (14).

9. The electrical equipment with IP67 protection rating according to claim 8, characterized in that: Multiple locking components (6) are elastically connected to the box body (3). The cross-section of the locking component (6) is L-shaped. The locking component (6) is used to lock the rubber ring compression sleeve (2) so that the outer waterproof rib (14) of the waterproof rubber ring (1) tightly abuts against the water-locking ring (5).

10. The electrical equipment with IP67 protection rating according to claim 7, characterized in that: The inner edge of the outer end of the connector is provided with an annular groove corresponding to the clamping ring (12).

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