WO2024094147A1

WO2024094147A1 - Connector shielding sleeve position-fixing structure

Info

Publication number: WO2024094147A1
Application number: PCT/CN2023/129495
Authority: WO
Inventors: 王超
Original assignee: 长春捷翼汽车科技股份有限公司
Priority date: 2022-11-03
Filing date: 2023-11-03
Publication date: 2024-05-10
Also published as: CN219040949U

Abstract

The present application relates to the technical field of connector design. Disclosed is a connector shielding sleeve position-fixing structure, comprising a connector sheath, a shielding sleeve and a metal position-fixing member. The connector sheath comprises a cavity body and a slot body vertically communicated with the cavity body. The shielding sleeve is arranged in the cavity body, and the shielding sleeve is provided with a limiting section indented in the radial direction. The metal position-fixing member is in a piece shape, and comprises two elastic arms oppositely arranged and a connection part connecting the elastic arms. The connection part is arranged in the slot body, and the two elastic arms are engaged with the limiting section, the distance between free ends of the two elastic arms being less than or equal to the diameter of the limiting section. Made of a metal material, the metal position-fixing member can meet relatively high strength and mechanical performance test requirements when being very thin. Additionally, a surrounding structure for the metal position-fixing member is provided such that the distance between the free ends is smaller. Therefore, when a connector is inverted, the metal position-fixing member will not fall off under the constraint of the free ends.

Description

Connector shielding sleeve positioning structure

Related Applications

This application claims priority to the Chinese utility model patent application with application number 202222927698.4 filed on November 03, 2022, and cites all the contents disclosed in the above patent application as part of this application.

Technical Field

The present application relates to the technical field of connector design, and more specifically, to a connector shielding sleeve positioning structure.

Background technique

Electrical connectors can be used in transportation, communications, home appliances, medical products and other products. With the rapid development of the technical level of products in the supporting fields of electrical connectors and the rapid growth of the market, the development of connector technology is strongly promoted. So far, electrical connectors have developed into a series of professional products with a complete range of products, various specifications and models, various structures and standard system specifications. With the rapid development of modern science and technology, miniaturization has also become an important demand on the basis of the high-performance demand trend of electrical connectors. The connecting terminals in the electrical connector are responsible for transmitting data information. The interference of external signals on the connecting terminals will cause distortion of signal transmission. Therefore, shielding sleeves are set outside the connecting terminals and inside the connector to shield electromagnetic interference. The shielding sleeve is installed in the connector and is movable in the axial direction. Therefore, a positioning piece is required to ensure that the shielding sleeve is fixed in the connector. When the shielding sleeve needs to be removed, the positioning piece must be removed first. At present, general positioning pieces are realized by plastic mold molding. Because the plastic material is soft and has poor strength, a thicker wall thickness is generally required to ensure the fixing strength requirements, resulting in a large volume of the connector body, which cannot meet the demand for miniaturization of products. At the same time, it is difficult to set a knot for installing the positioning member on the miniaturized connector. Therefore, there is an urgent need in the prior art for a positioning member that can be installed by connecting with a shielding sleeve and has a smaller size.

Summary of the invention

One object of the present application is to provide a connector solution that is not easy to fall off and can be miniaturized.

A connector shielding sleeve positioning structure, comprising: a connector sheath, a shielding sleeve and a metal positioning piece;

The connector sheath comprises a cavity and a slot body vertically communicating with the cavity;

The shielding sleeve is arranged in the cavity;

The shielding sleeve has a limiting section formed by a radial depression;

The metal positioning member is in the form of a sheet, and comprises two elastic arms arranged opposite to each other, and a connecting portion connecting the two elastic arms;

The connecting portion is arranged in the groove body, the two elastic arms are clamped on the limiting section, and the distance between the free ends of the two elastic arms is less than or equal to the diameter of the limiting section.

The beneficial effects of the present application are as follows: the metal locating piece can meet the high strength and mechanical performance test requirements in a very thin condition due to the metal material. At the same time, the embracing structure of the metal locating piece is increased, and the distance between the free ends is smaller. When the connector is inverted, the metal locating piece will not fall off due to the constraint of the free end, thereby providing secondary protection for the connector and strengthening the reliability and stability of the connector itself. The solution provided in the present application also includes the possibility of selecting a metal locating piece made of phosphor bronze with better elasticity or a metal locating piece made of stainless steel with better rigidity according to actual conditions.

Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic structural diagram of a connector shielding sleeve positioning structure according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a connector sheath structure of a connector shielding sleeve positioning structure according to an embodiment of the present application.

FIG. 3 is a schematic diagram of the shielding sleeve structure of the connector shielding sleeve positioning structure according to an embodiment of the present application.

FIG. 4 is a schematic diagram of the metal positioning member structure of the connector shielding sleeve positioning structure according to an embodiment of the present application.

Detailed ways

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the above-mentioned technologies, methods, and equipment should be considered as part of the specification.

In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not Therefore, other examples of the exemplary embodiments may have different values.

The connector shielding sleeve positioning structure, as shown in Figures 1 to 4, includes: a connector sleeve 1, a shielding sleeve 2 and a metal positioning piece 3; the connector sleeve 1 includes a cavity 11 and a groove body 12 vertically connected to the cavity 11; the shielding sleeve 2 is arranged in the cavity 11; the shielding sleeve 2 has a limiting section 21 formed by a radial recess; the metal positioning piece 3 is sheet-shaped, including two elastic arms 31 arranged opposite to each other (for example, symmetrically along the longitudinal center axis of the metal positioning sheet), and a connecting part 32 connecting the two elastic arms 31; the connecting part 32 is arranged in the groove body 12, the two elastic arms 31 are clamped on the limiting section 21, and the distance between the two free ends 311 of the two elastic arms 31 is less than or equal to the diameter of the limiting section 21.

The terminals in the connector are used for electrical connection of different electrical connection ends, and the shielding sleeve 2 is used to shield the interference of the signal. The shielding sleeve 2 is longitudinally arranged in the cavity 11 of the connector sheath 1, and there is a groove 12 perpendicular to the cavity 11 on the side of the cavity 11, and the metal positioning piece 3 passes through the groove 12. Its connecting part 32 is located in the groove 12, and the elastic arm 31 is clamped on the limiting section 21 of the shielding sleeve 2, and the diameter of the limiting section 21 is smaller than the diameter of other parts of the shielding sleeve 2. When the elastic arm 31 is clamped on the limiting section 21, the shielding sleeve 2 is fixed in the longitudinal direction and cannot move, thereby achieving a positioning effect. Because of the metal material, the metal positioning piece 3 can meet higher strength and mechanical performance test requirements in a very thin case. At the same time, the embracing structure of the metal positioning piece 3 is increased, and the distance between the two free ends 311 is smaller. When the connector is inverted, it is constrained by the free end 311, and the metal positioning piece 3 will not fall off, thereby providing secondary protection for the connector and strengthening the reliable stability of the connector itself.

In some embodiments, the metal positioning member 3 is made of phosphor bronze alloy. Phosphor bronze is an alloy of copper, tin and phosphorus, and is hard in texture. It is mainly used as a wear-resistant part and an elastic element. At the same time, the alloy has excellent machining performance and chip forming performance, which can quickly shorten the part processing time. The metal positioning member 3 made of phosphor bronze alloy has better elasticity, making it easier to engage with the limiting section 21.

Furthermore, in the case where the material of the metal locator 3 is phosphor bronze alloy, the thickness of the metal locator 3 can be, for example, 0.4mm-3mm. The metal locator 3 made of phosphor bronze alloy has the characteristics of slightly lower rigidity but better elasticity compared to stainless steel. Therefore, the thickness of the metal locator 3 is a consideration factor of this application. If the thickness is too large, the elastic arm is not easy to deform and cannot be plugged in. If the thickness is too small, the hardness of the metal locator 3 is insufficient, which easily leads to irreversible bending of the elastic arm 31 when it is connected with the limit section 21. In order to find a suitable thickness of the metal locator 3 made of phosphor bronze, the applicant conducted relevant experiments. The experimental method is to plug metal locators 3 of different thicknesses with the same shielding sleeve 2 under a thrust of 120N. If a crease is found on the elastic arm 31 after plugging, it is unqualified. If it cannot be plugged in due to too large thickness, it is also unqualified. The experimental results are shown in Table 1.

Table 1: Effect of the thickness of the metal positioning member 3 made of phosphor bronze on whether it can be plugged in and whether the elastic arm 31 has creases Impact

As shown in Table 1, when the thickness of the metal locating piece 3 made of phosphor bronze is less than 0.4 mm, the elastic arm 31 is unqualified because creases appear after plugging in. At the same time, when the thickness of the metal locating piece 3 made of phosphor bronze is greater than 3 mm, the metal locating piece 3 cannot be plugged in with the shielding sleeve 2. Therefore, the applicant can choose the thickness of the metal locating piece 3 made of phosphor bronze to be 0.4 mm-3 mm.

In some embodiments, the material of the metal positioning member 3 may be, for example, stainless steel. Compared with phosphor bronze alloy, stainless steel has higher strength but slightly lower elasticity.

Furthermore, when the metal positioning member 3 is made of stainless steel, the thickness of the metal positioning member 3 is 0.2 mm to 2.6 mm. The applicant used the same experimental method as above to select the appropriate thickness of the metal positioning member 3 made of stainless steel, and the experimental results are shown in Table 2.

Table 2: Effect of the thickness of the stainless steel metal positioning member 3 on whether it can be plugged in and whether the elastic arm 31 has creases

As shown in Table 2, when the thickness of the stainless steel metal positioning piece 3 is less than 0.2 mm, the elastic arm 31 is unqualified because creases appear after insertion. At the same time, when the thickness of the stainless steel metal positioning piece 3 is greater than 2.6 mm, the metal positioning piece 3 cannot be plugged into the shielding sleeve. Therefore, the applicant can choose the thickness of the stainless steel metal positioning piece 3 to be 0.2 mm-2.6 mm.

In some embodiments, the ratio of the minimum distance between the two free ends 311 of the metal positioning member 3 to the diameter of the limiting segment 21 is 1:1.15 to 1:1.6. If the ratio of the minimum distance between the two free ends 311 to the diameter of the limiting segment 21 is too small, The metal positioning piece 3 will be difficult or even unable to be inserted into the limiting section 21 under a thrust of 120N. If this ratio is too large, the metal positioning piece 3 will be more easily separated from the limiting section 21 in the swing test. The experimental results are shown in Table 3.

Table 3: Comparison of the minimum distance between the two free ends 311 of the metal positioning member 3 and the diameter of the limiting section 21 Influence on whether it can be plugged in and out

As shown in Table 3, when the ratio of the minimum distance between the two free ends 311 of the metal locator 3 to the diameter of the limiting section 21 is less than 1:1.6, that is, the distance between the free ends 311 is too small, resulting in the metal locator 3 being unable to plug into the limiting section 21, so it is unqualified. When the ratio of the minimum distance between the two free ends 311 of the metal locator 3 to the diameter of the limiting section 21 is greater than 1:1.15, that is, the distance between the free ends 311 is too large, resulting in the separation of the metal locator 3 and the limiting section 21 in the swing test, it is also unqualified. Therefore, the applicant can choose the ratio of the minimum distance between the two free ends 311 of the metal locator 3 to the diameter of the limiting section 21 to be: 1:1.15 to 1:1.6.

In some embodiments, a snap-in groove is provided on the side wall of the groove body 12, and at least one snap-in protrusion 33 for snapping into the snap-in groove is provided on both sides of the connecting portion 32. The snap-in protrusion 33 snaps into the snap-in groove to make the metal positioning member 3 more firmly installed.

In some embodiments, the two elastic arms 31 include an arc segment 312, and the arc segment 312 has an arc surface that matches at least the surface of the limiting segment 21. That is, the inner surface of the arc segment 312 is an arc shape that completely fits the limiting segment 21, so that the connection is more secure and can prevent the elastic arm 31 from shaking and making abnormal noises.

In some embodiments, the surfaces opposite to the two free ends 311 are provided with guide surfaces, which can facilitate the insertion of the free ends 311 and the limiting sections 21 and prevent the free ends 311 from contacting the limiting sections 21 rigidly and scratching the surface of the shielding sleeve 2 .

In some embodiments, the connection portion 32 is interference fit with the slot body 12. The interference fit can make the connection between the connection portion 32 and the slot body 12 more firmly connected and also have waterproof and dustproof functions.

Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

A connector shielding sleeve positioning structure, characterized in that it comprises: a connector sheath (1), a shielding sleeve (2) and a metal positioning piece (3);

The connector sheath (1) comprises a cavity (11) and a slot (12) vertically connected to the cavity (11);

The shielding sleeve (2) is arranged in the cavity (11);

The shielding sleeve (2) has a limiting section (21) formed by a radial depression;

The metal positioning member (3) is in the form of a sheet, and comprises two elastic arms (31) arranged opposite to each other, and a connecting portion (32) connecting the elastic arms (31);

The connecting portion (32) is arranged in the groove body (12), the two elastic arms (31) are clamped on the limiting section (21), and the distance between the free ends (311) of the two elastic arms (31) is less than or equal to the diameter of the limiting section (21).
The connector shielding sleeve positioning structure according to claim 1 is characterized in that the material of the metal positioning piece (3) is phosphor bronze alloy.
The connector shielding sleeve positioning structure according to claim 2 is characterized in that the thickness of the metal positioning piece (3) is 0.4 mm-3 mm.
The connector shielding sleeve positioning structure according to claim 1 is characterized in that the metal positioning piece (3) is made of stainless steel.
The connector shielding sleeve positioning structure according to claim 4 is characterized in that the thickness of the metal positioning piece (3) is 0.2 mm-2.6 mm.
The connector shielding sleeve positioning structure according to claim 1 is characterized in that the ratio of the minimum distance between the two free ends (311) of the metal positioning piece (3) to the diameter of the limiting section (21) is 1:1.15 to 1:1.6.
The connector shielding sleeve positioning structure according to claim 1 is characterized in that: a snap-in groove is provided on the side wall of the groove body (12), and at least one snap-in protrusion (33) for snapping into the snap-in groove is provided on both sides of the connecting portion (32).
The connector shielding sleeve positioning structure according to claim 1 is characterized in that the two elastic arms (31) include an arc segment (312), and the arc segment (312) has an arc surface that matches at least a portion of the circumference of the limiting segment (21).
The connector shielding sleeve positioning structure according to claim 1 is characterized in that guide surfaces are provided on the surfaces opposite to each other of the two free ends (311).
The connector shielding sleeve positioning structure according to claim 1 is characterized in that: The portion (32) is interference fit with the groove body (12).