Inward-outward contact type bidirectional quincunx contact and method of use

Abstract

The bidirectional plum blossom contact of inside and outside contact type comprises a structure support, a contact piece, a pressure spring and a tension spring, the structure support is composed of an inner spring slot piece, an outer spring slot piece and a connecting pin connecting the inner spring slot piece and the outer spring slot piece, the inner spring slot piece is composed of an inner clamping groove facing outward, and the outer spring slot piece is composed of an outer clamping groove facing inward; the contact piece is composed of a contact piece body, one end of the contact piece body is provided with an inner contact, an inner contact piece groove and an inner spring slot, the other end is provided with an outer contact, an outer contact piece groove and an outer spring slot, the inner contact piece groove and the outer contact piece groove are clamped on the inner clamping groove and the outer clamping groove respectively, the tension spring is installed on the inner spring slot, and the pressure spring is installed on the outer spring slot to complete the assembly of the bidirectional plum blossom contact. The bidirectional plum blossom contact of inside and outside contact type is movably connected, and the use method is also disclosed.

Description

TECHNICAL FIELD

[0001] The present application relates to a star contact, in particular to a bidirectional star contact of inside and outside contact type and a use method. BACKGROUND

[0002] The star contact is a commonly used component in electrical connection, has a series of advantages such as large current capacity and low installation precision requirement, is often used in the environment such as outdoor or indoor where high-precision installation cannot be provided, the connection is stable and reliable, installation is convenient, and the use range is quite wide. The technical principle and application are quite mature, thereby the star contact has been widely applied.

[0003] Although the conventional star contact in the prior art has been widely applied, due to the particularity of the structure, the connection of the shaft and the shaft in a straight line type, the connection scheme cannot be used in the environment with the requirement of movable contact, and the movable connection scheme in the current connection also has a large market and application requirement, therefore the application range of the connection scheme is greatly limited. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides an inside and outside contact type star contact with movable connection and a use method, and the star contact is defined as a bidirectional star contact.

[0005] The technical scheme adopted by the present application to solve the above technical problems is as follows:

[0006] The inside and outside contact type bidirectional star contact comprises a structure support, a contact piece, a pressure spring and a tension spring, the structure support is composed of an inner spring groove piece, an outer spring groove piece and a connecting pin connecting the inner spring groove piece and the outer spring groove piece, the inner spring groove piece is composed of an annular outward inner clamping groove, and the outer spring groove piece is composed of an annular inward outer clamping groove; the contact piece is composed of a contact piece body, one end of the contact piece body is provided with an inner contact point, an inner contact piece groove and an inner spring groove, and the other end is provided with an outer contact point, an outer contact piece groove and an outer spring groove, the inner contact point, the inner contact piece groove and the inner spring groove and the outer contact point, the outer contact piece groove and the outer spring groove are respectively arranged on opposite sides of the contact piece body, that is, the inner contact point and the outer contact point, the inner contact piece groove and the outer contact piece groove, and the inner spring groove and the outer spring groove are respectively arranged on opposite sides of the contact piece body, the inner contact piece groove and the outer contact piece groove are respectively clamped on the inner clamping groove and the outer clamping groove, the tension spring is installed on the inner spring groove, and the pressure spring is installed on the outer spring groove to complete the assembly of the bidirectional star contact.

[0007] Further, the structure support is connected by the connecting pin, and the connecting pin is formed by riveting at both ends.

[0008] Further, the material of the structure support is non-magnetic stainless steel.

[0009] Further, the material of the contact piece is oxygen-free copper.

[0010] Further, the inner contact and the outer contact are both arc-shaped convex structures.

[0011] The installation and use method of the bidirectional plum blossom contact is as follows: the bidirectional plum blossom contact is used for the movable connection between a shaft and a shaft sleeve, the bidirectional plum blossom contact is movably connected with the shaft sleeve at the outside and movably connected with a conductor shaft at the inside.

[0012] Further, the shaft sleeve is connected with the outer contact of the bidirectional plum blossom contact, and an arc-shaped inner recessed contact piece groove is arranged at the connection position of the shaft sleeve and the outer contact.

[0013] Further, the width of the contact piece groove in the shaft sleeve is greater than the width of the outer contact, that is, the length of the contact piece groove along the axial direction of the shaft sleeve is greater than the length of the outer contact along the length direction of the contact piece.

[0014] Further, the conductor shaft is arranged in the bidirectional plum blossom contact and connected with the inner contact of the bidirectional plum blossom contact.

[0015] The technical scheme changes the contact point of the existing plum blossom contact from the outside to the inside, thereby forming the connection between the conductor shaft and the shaft sleeve. The contact points on the contact piece of the bidirectional plum blossom contact are distributed on both sides of the contact piece, thereby forming a new connection mode of the current that the plum blossom contact is contacted by the inner conductor and the outer conductor respectively. The structure support type of the bidirectional plum blossom contact is changed from the original scheme that the contact piece grooves are all distributed on the outside to the structure mode that both ends are the inside and the outside, so that the contact force in the radial direction of both ends changes from the same direction outward to the inside and the outside in different directions.

[0016] Compared with the prior art, the bidirectional plum blossom contact has the beneficial effects that: compared with the plum blossom contact in the prior art, the connection between two shafts is changed into the connection between a shaft and a shaft sleeve. The two conductors connected between the shafts in the prior art cannot move relative to each other in the axial direction, so they cannot be disconnected or used in the occasion that the two conductors move relative to each other in the axial direction. However, the electrical elements to be connected can move relative to each other in the axial direction in the technical scheme, so that the disconnection capability can be formed or the connection between the sliding conductors can be formed, such as large pipeline bus, thereby widening the application range of the plum blossom contact. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure support structure diagram of the present application;

[0018] Figure 2 It is a contact piece structure diagram;

[0019] Figure 3 It is a structure diagram of the present application;

[0020] Figure 4 This is a structural diagram of the bidirectional plum blossom contact in use.

[0021] In the figure, 1-structural bracket, 11-inner spring slot, 12-outer spring slot, 13-connecting pin, 14-inner card slot, 15-outer card slot, 2-contact piece, 21-inner contact, 22-inner contact groove, 23-inner spring slot, 24-outer contact, 25-outer contact groove, 26-outer spring slot, 3-pressure spring, 4-tension spring, 5-shaft sleeve, 51-contact slot, 6-conductor shaft. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following embodiments. Any equivalent modifications made by those skilled in the art based on the teachings of the present invention should fall within the scope of protection of the present invention.

[0023] like Figure 3 As shown, a bidirectional plum blossom contact of inner and outer contact type includes a structural support 1, a contact piece 2, a pressure spring 3 and a tension spring 4; Figure 1 As shown, the structural bracket 1 is composed of an inner spring groove 23 pieces 11, an outer spring groove 26 pieces 12 and a connecting pin 13 connecting the inner spring groove 23 pieces 11 and the outer spring groove 26 pieces 12. The inner spring groove 23 pieces 11 are composed of an inner card groove 14 facing outward in an annular direction, and the outer spring groove 26 pieces 12 are composed of an outer card groove 15 facing inward in an annular direction; Figure 2 As shown, the contact piece 2 is composed of a contact body, one end of which is provided with an inner contact 21, an inner contact groove 22 and an inner spring groove 23, and the other end is provided with an outer contact 24, an outer contact groove 25 and an outer spring groove 26. The inner contact 21, the inner contact groove 22 and the inner spring groove 23 and the outer contact 24, the outer contact groove 25 and the outer spring groove 26 are respectively arranged on opposite sides of the contact body, that is, the inner contact 21 and the outer contact 24, the inner contact groove 22 and the outer contact groove 25, the inner spring groove 23 and the outer spring groove 26 are respectively arranged on opposite sides of the contact body; the inner contact 21, the outer contact 24 are in contact with the shaft or sleeve 5 to be connected respectively, and are nodes for current connection; the inner contact groove 22 and the outer contact groove 25 are areas that are in contact and fixed with the structural bracket 1; the inner spring groove 23 and the outer spring groove 26 are areas for fixing and installing springs; the inner contact groove 22 and the outer contact groove 25 are respectively clamped on the inner clamping groove 14 and the outer clamping groove 15, the tension spring 4 is installed on the inner spring groove 23, and the pressure spring 3 is installed on the outer spring groove 26 to complete the assembly of the bidirectional plum blossom contact; the pressure spring 3 and the tension spring 4 are parts that provide contact pressure for the entire plum blossom contact, and the size of the contact force can be adjusted according to the size of the contact force.

[0024] Further, the structure support 1 is connected by the connecting pin 13, and the connecting pin 13 is connected by riveting after the inner spring groove 23 and the outer spring groove 26 are connected, which mainly limits the activity area and movement route of the contact piece 2, and fixes the shape of the whole tulip contact, which is the framework of the whole product.

[0025] Further, the material of the structure support 1 is non-magnetic stainless steel.

[0026] Further, the material of the contact piece 2 is oxygen-free copper.

[0027] Further, the inner contact 21 and the outer contact 24 are both circular arc convex structures.

[0028] The installation and use method of the bidirectional tulip contact is as shown in the figure. Figure 4 The bidirectional tulip contact is used for the movable connection between the shaft and the shaft sleeve 5, the bidirectional tulip contact is movably connected with the shaft sleeve 5 outside and the conductor shaft 6 inside, and the shaft can be infinitely stretched and contracted in the shaft sleeve 5, so that the connection with the bidirectional tulip contact can be applied to the connection mode with the activity performance requirement, such as the connection between the urban pipeline bus GIL.

[0029] Further, the shaft sleeve 5 is in contact with the outer contact 24 of the bidirectional tulip contact, and the connecting part of the shaft sleeve 5 and the outer contact 24 is provided with a circular arc concave contact piece groove 51.

[0030] Further, the width of the contact piece groove 51 in the shaft sleeve 5 is greater than the width of the outer contact 24, that is, the length of the contact piece groove 51 along the axial direction of the shaft sleeve 5 is greater than the length of the outer contact 24 along the length direction of the contact piece 2.

[0031] Further, the conductor shaft 6 is arranged inside the bidirectional tulip contact and in contact with the inner contact 21 of the bidirectional tulip contact.

[0032] In the installation and use structure of the bidirectional tulip contact as shown in the figure, Figure 4 The shaft sleeve 5 is used for connecting the outer end contact piece of the bidirectional tulip contact, the contact piece groove 51 is opened on the shaft sleeve 5 and matched with the outer contact piece, the outer contact 24 of the tulip contact is arranged in the groove to form a fixedly connected one end, the width of the contact piece groove 51 in the shaft sleeve 5 is greater than the width of the outer contact 24 of the contact piece, and the bottom is circular arc. Therefore, the bidirectional tulip contact can freely swing in the contact piece groove 51, and the range of the swing angle Φ can be adjusted according to the width of the groove and the like.

[0033] Due to the free swing of the bidirectional tulip contact, the position of the inner contact 21 of the tulip contact also changes, and the center position of the whole tulip contact also deviates, and the deviation value s is:

[0034] s = d x sin Φ

[0035] Where d is the axial distance between the inner and outer contact pieces when the contact pieces 2 are parallel in the axial direction.

[0036] At the same time, when the conductor shaft 6 and the bidirectional tulip contact are connected, an angle θ is generated. Since the contact tips of the contact pieces 2 are all circular arcs, when the conductor shaft 6 contacts the inner contact 21, it can rotate around the circular arc of the contact tip to properly contact.

[0037] Since the connection between the conductor shaft 6 and the contact pieces 2 is a tangential connection between a straight line and a circular arc in the axial direction, they can slide in the tangential direction to change the axial position.

[0038] In summary, when connected with the bidirectional tulip contact, the conductor shaft 6 and the shaft sleeve 5 can accommodate an angular deviation of θ + φ in the axial direction, and can withstand a central radial deviation of s. They can move relative to each other in the axial direction. Because of the above functional characteristics of the bidirectional tulip contact, and because of the strong current-carrying capacity of the tulip contact, this connection method is particularly suitable for large current connection and breaking in field engineering.

Claims

1. Bidirectional plum blossom contact with inner and outer contact, characterized by: The invention comprises a structural support, a contact piece, a pressure spring and a tension spring, wherein the structural support is composed of an inner spring slot piece, an outer spring slot piece and a connecting pin connecting the inner spring slot piece and the outer spring slot piece, the inner spring slot piece is composed of an inner card groove facing outward in an annular direction, and the outer spring slot piece is composed of an outer card groove facing inward in an annular direction; the contact piece is composed of a contact piece body, one end of the contact piece body is provided with an inner contact, an inner contact piece groove and an inner spring slot, and the other end is provided with an outer contact, an outer contact piece groove and an outer spring slot, the inner contact, inner contact piece groove and inner spring slot are respectively arranged on opposite sides of the contact piece body, the inner contact piece groove and the outer contact piece groove and the outer spring slot are respectively clamped on the inner card groove and the outer card groove, the tension spring is installed on the inner spring slot, and the pressure spring is installed on the outer spring slot to complete the assembly of the bidirectional plum blossom contact; The material of the contact piece is oxygen-free copper; The inner contact and the outer contact are both arc-shaped protruding structures.

2. The inner and outer contact bidirectional plum blossom contact according to claim 1, characterized in that: The structural bracket is formed by connecting the inner spring slot piece and the outer spring slot piece with a connecting pin and then riveting the two ends of the connecting pin.

3. The inner and outer contact bidirectional plum blossom contact according to claim 1 or 2, characterized in that: The materials of the structural brackets are all non-magnetic stainless steel.

4. The installation and use method of the bidirectional plum blossom contact is characterized by: The bidirectional plum blossom contact according to any one of claims 1 to 3 is used for a movably connected shaft and a sleeve, wherein the bidirectional plum blossom contact is externally movably connected to the sleeve and internally movably connected to the conductor shaft.

5. The method for installing and using a bidirectional plum blossom contact according to claim 4, characterized in that: The shaft sleeve is in contact with the outer contact of the bidirectional plum blossom contact, and an arc-shaped concave contact piece groove is provided at the connection between the shaft sleeve and the outer contact.

6. The method for installing and using a bidirectional plum blossom contact according to claim 4 or 5, characterized in that: The width of the contact slot in the shaft sleeve is greater than the width of the external contact.

7. The method for installing and using a bidirectional plum blossom contact according to claim 4, characterized in that: The conductor shaft is arranged inside the bidirectional plum blossom contact and is in contact with the inner contact point of the bidirectional plum blossom contact.

Images