Multi-size adaptive dustproof cap
By designing a multi-size adaptive dust cap, the combination of internal joints, external joints, tightening strips, limit grooves, elastic rubber bands and rubber sealing rings, the problem of poor adaptability of existing dust caps is solved, effectively preventing dust from charging ports of different sizes, and extending service life.
Patent Information
- Application Number
- CN202420548606.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The existing dust caps are difficult to adapt to charging ports of different sizes, resulting in weak adaptability, increasing production costs, and degradation of connection performance after long-term use.
A multi-size adaptive dust-proof cap is designed, including an inner cylindrical member, a cap, an inner joint, an outer joint, a tightening strip, a limiting groove, an elastic rubber band, a first and a second rubber sealing ring. Through the combination of these components, the inner hole type and cylindrical charging port can be adapted, and the stability and sealing of the dust-proof cap can be ensured through the cooperation of the elastic rubber band and the sealing ring.
This dust-proof cap can adapt to the charging port size from small to large, improves adaptability, and maintains the connection performance after a long time of use through the design of elastic rubber bands and sealing rings, and extends the service life.
Smart Images
Figure CN222581604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dust caps, in particular to a dust cap that is adaptable to multiple sizes. Background Art
[0002] With the popularization of new energy vehicles, the charging gun head used for charging new energy vehicles can be equipped with a dust cap to protect the charging port from dust and sand, extend the service life of the charging port, ensure the cleanliness of the charging port, and avoid problems such as poor charging or charging interruption caused by the entry of debris. This prevents dust and sand from entering the charging port, ensuring the cleanliness of the charging port and charging efficiency.
[0003] Since the charging ports are different for different manufacturers and models, they are either concave round holes or convex cylindrical shapes, and the external dimensions are inconsistent. If dust caps with corresponding dimensions are manufactured according to each type of charging gun head, the cost will increase and the dust caps will have weaker adaptability. At the same time, as the dust caps are frequently plugged in and out, they will wear out, and the connection performance between the dust cap and the charging port will become worse and worse. Utility Model Content
[0004] In view of this, the purpose of the present invention is to provide a dust cap that is adaptable to multiple sizes to solve the above-mentioned problems.
[0005] Based on the above purpose, the utility model provides a multi-size adaptive dust cap, comprising: an inner cylindrical member, a cap is fixed on the inner cylindrical member, an inner connecting part whose inner diameter is successively enlarged from top to bottom is fixedly connected inside the inner cylindrical member, an outer connecting part whose outer diameter is successively reduced from top to bottom is fixedly connected outside the inner cylindrical member, a plurality of tightening strips are fixedly connected to the bottom of the inner cylindrical member at the same circumference, a limiting groove is arranged on the outer side of each tightening strip, an elastic rubber band is sleeved in the limiting groove, the elastic rubber band is in a tight state, a plurality of first rubber sealing rings are arranged on the outer side of the external connecting part, and a plurality of second rubber sealing rings are arranged on the inner side of the internal connecting part;
[0006] For the inner hole type charging port, the external connection part is inserted into the inner hole type charging port to achieve dust prevention. For the cylindrical charging port, the internal connection part is put on the cylindrical charging port to achieve dust prevention.
[0007] As an optional implementation, a semicircular inner groove is provided on the bottom edge of the cap.
[0008] As an optional implementation, the bottom of the tightening strip is rounded.
[0009] As an optional implementation, the limiting groove on the tightening strip is close to the bottom of the tightening strip.
[0010] As an optional implementation, a built-in circular groove is provided on the top of the cap.
[0011] As an optional implementation, the corners of the cap are rounded.
[0012] The beneficial effects of the utility model: the utility model can fix the dust cap on the charging port regardless of the inner hole type or the cylindrical shape by designing the external connecting part and the internal connecting part. Thanks to the shape structure of the external connecting part and the internal connecting part, the external connecting part and the internal connecting part can accept the charging port sizes from small to large, and have good adaptability. Moreover, by tightening the elastic rubber band on the limiting groove, when the external connecting part is used to connect with the charging port, the multiple tightening strips at the bottom are subjected to the elastic force of the elastic rubber band, and the bottom diameter is reduced, making it easier to enter the charging port, and the first rubber sealing ring is used to contact and deform with the charging port to prevent the dust cover from falling off. When the internal connecting part is used to connect with the charging port, the multiple tightening strips at the bottom are subjected to the elastic force of the elastic rubber band, so that the tightening strips are squeezed around the charging port, and the first rubber sealing ring is used to contact and deform with the charging port to prevent the dust cover from falling off. Even if the dust cover is worn due to long-term use, the external connecting part with a larger outer diameter and the internal connecting part with a smaller inner diameter can continue to be changed, so the service life is long and the adaptability is strong. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;
[0015] Figure 2 This is a front view of an embodiment of the utility model;
[0016] Figure 3 This is a cross-sectional view of an embodiment of the utility model.
[0017] The markings in the figure are:
[0018] 2. Cover cap; 21. Semicircular inner groove; 22. Internal circular groove; 3. External connecting part; 31. First rubber sealing ring; 4. Internal connecting part; 41. Second rubber sealing ring; 5. Tightening strip; 51. Limiting groove; 52. Elastic rubber band. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.
[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0021] like Figure 1-Figure 3 As shown, a multi-size adaptable dust cap comprises: an inner cylindrical member, a cap 2 is fixed on the inner cylindrical member, an inner connecting portion 4 whose inner diameter increases from top to bottom is fixedly connected inside the inner cylindrical member, an outer connecting portion 3 whose outer diameter decreases from top to bottom is fixedly connected outside the inner cylindrical member, a plurality of tightening strips 5 are fixedly connected to the bottom of the inner cylindrical member in equal circumference, a limiting groove 51 is arranged on the outer side of each of the tightening strips 5, an elastic rubber band is sleeved in the limiting groove 51, and the elastic rubber band is in a tight state, a plurality of first rubber sealing rings 31 are arranged on the outer side of the external connecting portion 3, and a plurality of second rubber sealing rings 41 are arranged on the inner side of the internal connecting portion 4;
[0022] For an inner hole type charging port, the external connection part 3 is inserted into the inner hole type charging port to achieve dust prevention. For a cylindrical charging port, the internal connection part 4 is put on the cylindrical charging port to achieve dust prevention.
[0023] In this embodiment, the dust cap can be fixed on the charging port regardless of the inner hole type or the cylindrical shape. Thanks to the shape structure of the external part 3 and the internal part 4, the external part 3 and the internal part 4 can accept the charging port size from small to large, and have good adaptability. Moreover, by tightening the elastic rubber band on the limiting groove 51, when the external part 3 is used to connect with the charging port, the multiple tightening strips 5 at the bottom are subjected to the elastic force of the elastic rubber band, and the bottom diameter is reduced, making it easier to enter the charging port, and the first rubber sealing ring 31 is used to contact and deform with the charging port to prevent the dust cover from falling off. When the internal part 4 is used to connect with the charging port, the multiple tightening strips 5 at the bottom are subjected to the elastic force of the elastic rubber band, so that the tightening strips 5 are squeezed around the charging port, and the first rubber sealing ring 31 is used to contact and deform with the charging port to prevent the dust cover from falling off. Even if the dust cover is worn due to long-term use, it is possible to continue to change to use an external part 3 with a larger outer diameter and an internal part 4 with a smaller inner diameter.
[0024] As an optional implementation, Figure 3 As shown, a semicircular inner groove 21 is provided at the bottom edge of the cap 2;
[0025] In this way, it is convenient for the user to insert his / her fingers into the semicircular inner groove 21 to assist the user in pulling out the cap 2 .
[0026] As an optional implementation, Figure 3 As shown, the bottom of the tightening strip 5 is rounded;
[0027] In this way, because the bottom of the tightening strip 5 contacts the charging port first, the rounded corners facilitate smooth contact between the tightening strip 5 and the charging port, thereby improving the user experience.
[0028] As an optional implementation, Figure 1 , 3 As shown, the limiting groove 51 on the tightening strip 5 is close to the bottom of the tightening strip 5;
[0029] In this way, the top of the limiting strip is fixedly connected to the inner cylindrical member, the bottom and the edge are suspended, and the limiting groove 51 is close to the bottom of the tightening strip 5, which facilitates the elastic rubber band to tighten and deform the tightening strip 5.
[0030] As an optional implementation, Figure 1 , 3 As shown, the top of the cap 2 is provided with a built-in circular groove 22;
[0031] In this way, useless materials can be reduced and costs can be cut.
[0032] As an optional embodiment, the corners of the cap 2 are rounded;
[0033] In this way, the appearance texture is improved and the product competitiveness is increased.
[0034] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.
Claims
1. A multi-size dust cap, characterized in that: include: An inner cylindrical member, a cap (2) is fixed on the inner cylindrical member, an inner connecting portion (4) whose inner diameter increases from top to bottom is fixedly connected inside the inner cylindrical member, an outer connecting portion (3) whose outer diameter decreases from top to bottom is fixedly connected outside the inner cylindrical member, a plurality of tightening strips (5) are fixedly connected to the bottom of the inner cylindrical member at equal circumference, a limiting groove (51) is provided on the outer side surface of each of the tightening strips (5), an elastic rubber band (52) is sleeved in the limiting groove (51), and the elastic rubber band (52) is in a taut state, a plurality of first rubber sealing rings (31) are provided on the outer side of the external connecting portion (3), and a plurality of second rubber sealing rings (41) are provided on the inner side of the internal connecting portion (4); For an inner hole type charging port, the external connection part (3) is inserted into the inner hole type charging port to achieve dust prevention. For a cylindrical charging port, the internal connection part (4) is put on the cylindrical charging port to achieve dust prevention.
2. The multi-size adaptable dust cap according to claim 1, characterized in that: The bottom edge of the cover cap (2) is provided with a semicircular inner groove (21).
3. The multi-size adaptable dust cap according to claim 1, characterized in that: The bottom of the tightening strip (5) is rounded.
4. The multi-size adaptable dust cap according to claim 1, characterized in that: The limiting groove (51) on the tightening strip (5) is close to the bottom of the tightening strip (5).
5. The multi-size adaptable dust cap according to claim 1, characterized in that: The top of the cover cap (2) is provided with a built-in circular groove (22).
6. The multi-size adaptable dust cap according to claim 1, characterized in that: The corners of the cover cap (2) are rounded.