A shielded barrel and connector

Abstract

The present application relates to the field of connecting device parts, in particular to a shielding cylinder and a connector. The present application is used to solve the problem that the existing connector is complex in structure and large in size in order to realize the floating of the internal insulator. The shielding cylinder comprises a cylinder body which can be sleeved outside the internal insulator and the inner wall profile of which is larger than the internal insulator profile or the outer wall profile is smaller than the outer shell cavity profile, the cylinder body is provided with a fixed structure which protrudes radially inward or outward, and the position of the cylinder body in front of the fixed structure is also provided with an elastic support structure which extends radially inward or outward, so that the front end of the internal insulator can be used as a fulcrum of the fixed structure of the shielding cylinder and can be deflected and floated in the shielding cylinder or the outer shell. The shielding cylinder is simple in structure and convenient to install; at the same time, the shielding cylinder occupies a smaller space in the connector, and the miniaturization of the connector can be realized.

Description

Technical Field

[0001] This invention relates to the field of components for connecting devices, and more specifically to a shielding cylinder and a connector. Background Technology

[0002] High-voltage connectors are a crucial energy transmission component in new energy vehicles. Existing high-voltage connectors typically consist of a housing, a shielding sleeve, and an internal insulator with cast terminals. The housing contains a insertion cavity, and the shielding sleeve is fitted over the internal insulator and installed within the insertion cavity. To prevent misalignment due to assembly or manufacturing errors, the internal insulator sometimes needs to float relative to the housing to absorb these errors. Current methods for achieving this floating mechanism typically involve installing springs at corresponding positions between the housing and the internal insulator. The elastic deformation of these springs allows the internal insulator to float. However, this type of connector has a complex structure and requires sufficient space between the internal insulator and housing for the springs, resulting in a larger overall connector size and hindering miniaturization design. Summary of the Invention

[0003] The purpose of this invention is to provide a shielding cylinder to solve the problem that existing connectors have a complex overall structure and are extremely large in size in order to achieve the floating of the inner insulator; the purpose of this invention is also to provide a connector to solve the problem that existing connectors have a complex overall structure and are extremely large in size in order to achieve the floating of the inner insulator.

[0004] To solve the above-mentioned technical problems, a shielding cylinder of the present invention includes a cylinder body that can be fitted onto an inner insulator and whose inner wall profile is larger than that of the inner insulator. A fixing structure is provided on the inner wall of the cylinder body that protrudes radially inward to clamp the inner insulator from the same circumference upward. An elastic support structure is also provided on the inner wall of the cylinder body in front of the fixing structure, extending radially inward to support the inner insulator and capable of elastic deformation, so that the front end of the inner insulator installed in the cylinder body can swing and float within the shielding cylinder with the fixing structure as a fulcrum. Alternatively, the present invention includes a cylinder body that can be fitted onto an inner insulator and whose outer wall profile is smaller than that of the outer shell's mounting cavity. A fixing structure is provided on the outer wall of the cylinder body that protrudes radially outward from the same circumference to be interference-fitted with the outer shell. An elastic support structure is also provided on the outer wall of the cylinder body in front of the fixing structure, extending radially outward to abut against the outer shell, so that the shielding cylinder and the inner insulator installed inside it can swing and float within the outer shell with the fixing structure as a fulcrum.

[0005] Furthermore, the fixing structure consists of fixed protrusions arranged at intervals along the circumference of the cylinder.

[0006] Furthermore, the fixed protrusion is a hemispherical protrusion.

[0007] Furthermore, the hemispherical protrusion is a stamped protrusion.

[0008] Furthermore, the elastic support structure consists of arched spring pieces arranged at intervals along the circumference of the cylinder.

[0009] Furthermore, the arched spring sheet is integrally stamped onto the cylinder.

[0010] Furthermore, the fixing structure is located near the rear end of the cylinder, and the elastic support structure is located in the middle of the cylinder.

[0011] Furthermore, the cross-section of the cylinder is circular, so that the front end of the cylindrical inner insulator can be radially oscillating and floating at any position in the circumference.

[0012] Furthermore, the cylindrical body has a square cross-section, and fixed structures and elastic support structures are arranged on each side wall of the cylindrical body so that the front end of the square columnar inner insulator can swing and float in the up, down, left, and right directions.

[0013] This invention proposes a pioneering technical solution to address the aforementioned technical problems. The inner wall contour of the shielding cylinder is larger than the inner insulator contour, or the outer wall contour is smaller than the outer shell's insertion cavity contour. A fixing structure protruding radially inward or outward is provided along the same circumference of the shielding cylinder, and a corresponding elastic support structure extending radially inward or outward is provided in front of the fixing structure. Thus, the front end of the inner insulator, i.e., the plug-in end, installed in the cylinder can float within the elastic deformation range of the elastic support structure, using the fixing structure as a fulcrum, in the gap space between the shielding cylinder and the inner insulator, or between the shielding cylinder and the outer shell. The shielding cylinder has a simple structure and is easy to install; simultaneously, the shielding cylinder occupies less space within the connector, facilitating miniaturized connector design.

[0014] Another aspect of the present invention provides a connector comprising a housing, a shielding cylinder, and an inner insulator. The housing has a fitting cavity, and the shielding cylinder is fitted over the inner insulator and installed within the fitting cavity. The shielding cylinder includes a cylindrical body that can be fitted over the inner insulator and whose inner wall profile is larger than that of the inner insulator. A fixing structure is provided on the inner wall of the cylinder, protruding radially inward to clamp the inner insulator from the same circumference upward. An elastic support structure is also provided on the inner wall of the cylinder, located in front of the fixing structure, extending radially inward to support the inner insulator and capable of elastic deformation, so that the front end of the inner insulator installed in the cylinder can... The shielding cylinder can be oscillating and floating within the shielding cylinder with a fixed structure as the fulcrum. After the inner insulator is installed inside the shielding cylinder, it can also oscillate and float within the shielding cylinder with the fixed structure as the fulcrum. Alternatively, it can include a cylinder that can be fitted onto the inner insulator and whose outer wall profile is smaller than the profile of the outer shell's mounting cavity. The outer wall of the cylinder is provided with a fixed structure that protrudes radially outward in the same circumference to be interference-fitted with the outer shell. The outer wall of the cylinder is also provided with an elastic support structure that extends radially outward to abut against the outer shell, so that the shielding cylinder and the inner insulator installed inside it can oscillate and float within the outer shell with the fixed structure as the fulcrum.

[0015] Furthermore, the fixing structure consists of fixed protrusions arranged at intervals along the circumference of the cylinder.

[0016] Furthermore, the fixed protrusion is a hemispherical protrusion.

[0017] Furthermore, the hemispherical protrusion is a stamped protrusion.

[0018] Furthermore, the elastic support structure consists of arched spring pieces arranged at intervals along the circumference of the cylinder.

[0019] Furthermore, the arched spring sheet is integrally stamped onto the cylinder.

[0020] Furthermore, the fixing structure is located near the rear end of the cylinder, and the elastic support structure is located in the middle of the cylinder.

[0021] Furthermore, the cross-section of the cylinder is circular, so that the front end of the cylindrical inner insulator can be radially oscillating and floating at any position in the circumference.

[0022] Furthermore, the cylindrical body has a square cross-section, and fixed structures and elastic support structures are arranged on each side wall of the cylindrical body so that the front end of the square columnar inner insulator can swing and float in the up, down, left, and right directions.

[0023] This invention proposes an improved technical solution to address the aforementioned technical problems. The inner wall contour of the connector's shielding cylinder is larger than the inner insulator contour, or the outer wall contour is smaller than the outer shell's insertion cavity contour. A fixing structure protruding radially inward or outward is provided along the same circumference of the shielding cylinder, and a corresponding elastic support structure extending radially inward or outward is provided in front of the fixing structure. Thus, the front end of the inner insulator, i.e., the plug-in end, installed in the cylinder can float within the elastic deformation range of the elastic support structure, using the fixing structure as a fulcrum, in the gap space between the shielding cylinder and the inner insulator, or between the shielding cylinder and the outer shell. The shielding cylinder structure is simple and easy to install; simultaneously, the shielding cylinder occupies less space within the connector, facilitating miniaturization of the connector design. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of a first embodiment of a connector according to the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a first embodiment of a shielding cylinder according to the present invention.

[0026] In the diagram: 1. Outer shell; 11. Insertion cavity; 12. Step; 2. Inner insulator; 3. Shielding cylinder; 31. Hemispherical protrusion; 32. Arched spring. Detailed Implementation

[0027] This invention proposes a pioneering technical solution to the aforementioned technical problems. The core concept of this invention is to make the inner wall contour of the shielding cylinder larger than the inner insulator contour, or the outer wall contour smaller than the outer shell's mounting cavity contour. A fixing structure protruding radially inward or outward is provided on the same circumference of the shielding cylinder, and a corresponding elastic support structure extending radially inward or outward is provided in front of the fixing structure. In this way, the front end of the inner insulator, i.e., the plug-in end, installed in the cylinder can float within the elastic deformation range of the elastic support structure, using the fixing structure as a fulcrum, in the gap space between the shielding cylinder and the inner insulator, or the gap space between the shielding cylinder and the outer shell. The shielding cylinder has a simple structure and is easy to install; at the same time, the shielding cylinder occupies less space within the connector, facilitating the miniaturization of the connector design.

[0028] To clearly illustrate the structure of this embodiment, the front side is defined as the plug-in side. Figure 1 The left side is the middle, and the rear side is the wiring side. Figure 1 The right-hand side should be noted as not representing the actual location of the product.

[0029] Based on the above concept, a first embodiment of a connector of the present invention includes as follows: Figure 1The outer shell 1 (partial structure of the outer shell), the shielding cylinder 3, and the inner insulator 2 with plug-in terminals (not shown) installed inside are shown. The shielding cylinder 3 is fitted over the inner insulator 2 and installed in the outer shell 1. Specifically, the outer shell 1 is provided with a fitting cavity 11 for the shielding cylinder 3 to be fitted. The rear end of the fitting cavity 11 is provided with a step 12 for axially stopping the shielding cylinder 3. The fitting cavity 11 is provided with a slot. The shielding cylinder is provided with an outwardly extending anti-reverse spring (not shown) to cooperate with the slot, thereby realizing the axial positioning of the shielding cylinder 3 in the fitting cavity 11. The shielding cylinder 3 includes a cylinder body, the inner wall profile of which is larger than the inner insulator 2's profile, creating a gap between the inner insulator and the cylinder body when the inner insulator is installed within the shielding cylinder. A fixing structure protruding radially inward on the inner wall of the cylinder body clamps the inner insulator 2 from the same circumference upward. An elastic support structure extending radially inward from the front of the fixing structure on the inner wall of the cylinder body supports the insulator circumferentially and is capable of elastic deformation. This allows the front end of the inner insulator 2, i.e., the insertion end, installed within the cylinder body to swing and float within the gap between the shielding cylinder 3 and the inner insulator 2, using the fixing structure as a fulcrum, within the elastic deformation range of the elastic support structure. This expands the functionality of the shielding cylinder 3, enabling the inner insulator 2 installed within the shielding cylinder 3 to swing and float relative to the outer shell 1, avoiding situations where connectors cannot be plugged in due to assembly or manufacturing errors, thus ensuring the reliability of connector plugging. Furthermore, the shielding cylinder 3 has a simple structure and is easy to install; its small footprint within the connector facilitates miniaturized connector design.

[0030] like Figure 1 , Figure 2 As shown, the fixing structure consists of radially inwardly protruding hemispherical protrusions 31 spaced at intervals along the circumference of the cylinder, which are interference-fitted with the inner insulator 2. The hemispherical protrusions 31 have a simple structure, and they clamp the inner insulator 2 through point contact, thus achieving their own fulcrum function and ensuring that the inner insulator can float around the fixing structure formed by the hemispherical protrusions. The hemispherical protrusions 31 are stamped protrusions, thereby ensuring the structural strength of the hemispherical protrusions 31.

[0031] The elastic support structure consists of inwardly curved arched spring pieces 32 spaced apart along the circumference of the cylinder. The arched spring pieces 32 have a simple structure and, when spaced apart, can support the inner insulator 2 circumferentially, ensuring the centered installation of the inner insulator 2. Their own elasticity also allows the inner insulator 2 to float within the gap space to absorb assembly and manufacturing errors, thereby ensuring the connection between different connectors. The arched spring pieces 32 are integrally stamped onto the cylinder, facilitating manufacturing and ensuring the elasticity of the arched spring pieces 32 themselves.

[0032] like Figure 1As shown, the fixing structure is located near the rear end of the cylinder, while the elastic support structure is located in the middle of the cylinder. This ensures the floating range of the front end of the inner insulator 2, i.e., the plug-in end.

[0033] exist Figure 2 In the illustrated embodiment, the cylindrical body has a circular cross-section. The insertion cavity of the connector's outer shell 1 is adapted to the cylindrical body structure. The inner insulator 2 is also cylindrical. There are six hemispherical protrusions 31 evenly arranged along the circumference of the cylindrical body, and four elastic support structures evenly arranged along the circumference of the cylindrical body. The specific number of hemispherical protrusions 31 and elastic support structures can be set as needed. In use, the front end of the cylindrical inner insulator 2, i.e., the insertion end, can radially deflect and float at any position in the circumference.

[0034] Regarding the structure of the cylindrical body, the present invention also provides another embodiment. In this embodiment, the cross-section of the cylindrical body is square. Naturally, the insertion cavity of the connector's outer shell is adapted to the cylindrical body structure, and the cross-sectional shape of the inner insulator is also square. In this case, spherical protrusions are arranged on each side of the cylindrical body, and elastic support structures are also arranged on each side of the cylindrical body, thereby ensuring the reliability of the inner insulator installation. During use, the front end of the square columnar inner insulator, i.e., the plug-in end, can swing and float in the up, down, left, and right directions.

[0035] Regarding the fixing structure, the present invention also provides other embodiments. In another embodiment, the fixing structure may be a radially inwardly protruding annular protrusion provided on the inner wall of the cylinder. The surface of the annular protrusion is arc-shaped and makes line contact with the shielding cylinder to ensure that the internal insulator can float relative to the annular protrusion.

[0036] Regarding the fixed protrusion, the present invention also provides other embodiments. In one embodiment, the fixed protrusion may be a block-shaped protrusion; in another embodiment, the fixed protrusion may also be a protrusion with a certain arc length; of course, in another embodiment, the fixed protrusion may also be a shoulder, as long as it is ensured that the front end of the inner insulator can swing and float in the gap space between the shielding cylinder and the inner insulator with the fixed protrusion as the fulcrum.

[0037] Regarding the elastic support structure, the present invention also provides other embodiments. In another embodiment, the elastic support structure is an elastic cantilever arm extending radially inward on the cylinder, which only needs to be able to support the insulator and undergo elastic deformation.

[0038] Regarding the formation of the arched spring, the present invention also provides other embodiments. In another embodiment, the arched spring can be installed on the cylinder by welding.

[0039] Regarding the formation of the hemispherical protrusion, the present invention also provides other embodiments. In another embodiment, the hemispherical protrusion can be installed on the cylinder by welding.

[0040] Regarding the positions of the fixed structure and the elastic support structure, the present invention also provides other embodiments. In another embodiment, the fixed structure can be arranged in the middle of the cylinder and the elastic support structure can be arranged in the front of the cylinder. It is only necessary to ensure that the front end of the inner insulator can swing and float in the gap space between the shielding cylinder and the inner insulator with the fixed protrusion as the fulcrum.

[0041] Regarding the connector, the present invention also provides a second embodiment. In this second embodiment, the shielding cylinder includes a cylinder that can be fitted onto the inner insulator and whose outer wall profile is smaller than the profile of the housing cavity. A fixing structure is provided on the outer wall of the cylinder, protruding radially outward in the same circumferential direction for interference fit with the housing. An elastic support structure is also provided on the outer wall of the cylinder, located in front of the fixing structure, extending radially outward to abut against the housing, so that the shielding cylinder and the inner insulator installed inside it can swing and float within the housing with the fixing structure as a fulcrum. Since the fixing structure and the elastic support structure differ from those in the first embodiment only in the protruding direction, they will not be described in detail here.

[0042] Another aspect of the present invention provides a shielding tube, which is the same as the different embodiments of the shielding tube described above, and will not be described again here.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A shielding cylinder, characterized in that: The first type of cylinder includes a cylindrical body that can be fitted over an inner insulator (2) and whose inner wall profile is larger than that of the inner insulator (2). The inner wall of the cylinder is provided with a fixing structure that protrudes radially inward to clamp the inner insulator (2) from the same circumference upward. The inner wall of the cylinder is also provided with an elastic support structure that extends radially inward to support the inner insulator (2) and can undergo elastic deformation, so that the front end of the inner insulator (2) installed in the cylinder can swing and float within the shielding cylinder (3) with the fixing structure as the fulcrum; or the second type of cylinder includes a cylindrical body that can be fitted over an inner insulator and whose outer wall profile is smaller than that of the outer shell cavity. The outer wall of the cylinder is provided with a fixing structure that protrudes radially outward from the same circumference upward to be interference-fitted with the outer shell. The outer wall of the cylinder is also provided with an elastic support structure that extends radially outward to abut against the outer shell, so that the shielding cylinder and the inner insulator installed inside it can swing and float within the outer shell with the fixing structure as the fulcrum.

2. The shielding cylinder according to claim 1, characterized in that: The fixing structure consists of fixed protrusions arranged at intervals along the circumference of the cylinder.

3. The shielding cylinder according to claim 2, characterized in that: The fixed protrusion is a hemispherical protrusion (31).

4. The shielding cylinder according to claim 3, characterized in that: The hemispherical protrusion (31) is a stamped protrusion.

5. The shielding cylinder according to any one of claims 1-4, characterized in that: The elastic support structure consists of arched spring pieces (32) arranged at intervals along the circumference of the cylinder.

6. The shielding cylinder according to claim 5, characterized in that: The arched spring piece (32) is integrally stamped on the cylinder.

7. The shielding cylinder according to any one of claims 1-4, characterized in that: The fixing structure is located near the rear end of the cylinder, and the elastic support structure is located in the middle of the cylinder.

8. The shielding cylinder according to any one of claims 1-4, characterized in that: The cylindrical body has a circular cross-section, allowing the front end of the cylindrical inner insulator to radially oscillate and float at any position in the circumference.

9. The shielding cylinder according to any one of claims 1-4, characterized in that: The cylindrical body has a square cross-section, and fixed structures and elastic support structures are arranged on each side wall of the cylindrical body so that the front end of the square columnar inner insulator can swing and float in the up, down, left and right directions.

10. A connector comprising a housing (1), a shielding sleeve, and an inner insulator (2), wherein a mounting cavity (11) is provided inside the housing (1), and the shielding sleeve is fitted over the inner insulator (2) and installed in the mounting cavity (11), characterized in that: The shielding cylinder is the shielding cylinder (3) as described in any one of claims 1-9. After the inner insulator (2) is installed inside the shielding cylinder (3), it can swing and float inside the shielding cylinder (3) with the fixed structure as the fulcrum; or the shielding cylinder and the inner insulator installed inside it can swing and float inside the outer shell with the fixed structure as the fulcrum.

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