屏蔽套、屏蔽装置和高压连接器

Abstract

本申请涉及一种屏蔽套、屏蔽装置和高压连接器。所述屏蔽套包括屏蔽套体、连接于屏蔽套体后端的固定环和设置于屏蔽套体前端的沿周向间隔布置的多个弹性触片，所述屏蔽套体的前端形成径向向外的翻边，每个弹性触片环绕翻边沿周向延伸的同时朝前拱起形成接触部，且每个弹性触片的一端连接于翻边，另一端从翻边的前方朝翻边延伸出搭接部，所述弹性触片受压时所述搭接部搭接于翻边上。该屏蔽套和采用该屏蔽套的屏蔽装置和高压连接器通过屏蔽套体前端设置的多个弹性触片与设备接口内的台阶面进行端面接触，弹性触片受压时搭接部与翻边搭接从而在弹性触片的两端均形成支点，使弹性触片的承压力成倍数上升，确保了稳定可靠的接触，保证了EMC功能。

Claims

1. A shield cover comprising a shield cover body, a fixing ring connected to a rear end of the shield cover body, and a plurality of elastic contact pieces arranged at intervals in a circumferential direction at a front end of the shield cover body, characterized in that, The front end of the shielding sleeve forms a radially outward flange. Each elastic contact extends circumferentially around the flange while arching forward to form a contact portion. One end of each elastic contact is connected to the flange, and the other end extends from the front of the flange to form an overlapping portion. When the elastic contact is pressed, the overlapping portion overlaps the flange.

2. The shield sleeve of claim 1, wherein, Each elastic contact piece is bent at one end connected to the flange to form a forward-facing bulge, and the height of the bulge relative to the flange is less than the height of the contact piece relative to the flange.

3. The shield sleeve of claim 2, wherein, The outer periphery of the shielding sleeve is provided with an elastic limiting plate. The rear end of the elastic limiting plate is connected to the shielding sleeve, and the front end is turned outward relative to the shielding sleeve.

4. The shield sleeve of claim 3, wherein, The outer periphery of the shielding sleeve is also provided with a limiting protrusion that is offset from the elastic limiting plate in the circumferential direction.

5. A shielding device for a connection between a cable and a device interface of a high voltage connector, comprising a shielding sleeve and a crimp sleeve, characterized in that The shielding sleeve is the shielding sleeve according to any one of claims 1-4; the fixing ring of the shielding sleeve is inserted between the insulation layer and the shielding layer after the cable is stripped at the front end; the crimping sleeve is tightly fitted on the shielding layer and the cable behind the shielding layer to fix the shielding sleeve to the cable; the contact portion of the multiple elastic contact pieces of the shielding sleeve contacts the stepped surface in the mounting hole of the device interface. The shielding device further includes a protective sleeve, which has a protective sleeve body, a flange formed at the front end of the protective sleeve body, and a retaining ring disposed along the outer periphery of the flange. The protective sleeve body is fitted onto the shielding sleeve body, and the flange and a plurality of elastic contact pieces are received in the area enclosed by the flange and the retaining ring.

6. The shielding device of claim 5, wherein, The protective sleeve body has an inner and outer through clearance notch corresponding to the elastic limiting plate on the outer periphery of the shielding sleeve body. The inner wall of the protective sleeve body is provided with a limiting groove corresponding to the limiting protrusion on the outer periphery of the shielding sleeve body, and a limiting platform is formed in the limiting groove. The limiting protrusion of the shielding sleeve body is engaged in the limiting groove and abuts against the limiting platform axially to restrict the rotation and axial movement of the protective sleeve relative to the shielding sleeve.

7. A high voltage connector comprising a housing and at least one cable passing through the housing from front to back, a shielding means being provided at the front end of the cable, the core of the cable after stripping at the front end passing through the shielding means and being connected to a terminal, characterized in that The shielding device is the shielding device according to any one of claims 5-6.

8. The high voltage connector of claim 7, wherein, The front and rear ends of the housing are respectively provided with at least one set of front sleeves and rear sleeves that are connected from front to rear. The at least one cable is respectively passed through the at least one set of front sleeves and rear sleeves. The shielding body of the shielding sleeve and the protective body of the protective sleeve are inserted into the front sleeve. The flange of the protective sleeve abuts against the front end of the front sleeve. The crimping sleeve is inserted into the rear sleeve.

9. The high voltage connector of claim 8, wherein, The front end of the front sleeve has a retaining edge protruding inward from the elastic limiting plate on the outer periphery of the shielding sleeve. The elastic limiting plate of the shielding sleeve is engaged with the retaining edge to restrict the rotation and axial movement of the shielding sleeve relative to the front sleeve.

10. The high voltage connector of claim 8, wherein, A first sealing ring is fitted on the front sleeve, and a second sealing ring is fitted between the rear end of the rear sleeve and the cable. A rear cover is also fastened to the rear end of the rear sleeve and abuts against the rear end of the second sealing ring.

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