Protection head for capacitor

Abstract

A protection head for a capacitor comprises the capacitor, a connecting column is arranged at the upper end of the capacitor, and an insulating rubber sleeve is arranged at the root of the connecting column. An insulating ring is arranged at the lower end of the insulating rubber sleeve, a ring groove is formed in the periphery of the insulating ring, and a convex ring is arranged at the upper end of the insulating ring. The insulating ring is made of a ceramic material. The periphery of the insulating ring is sleeved with the insulating sleeve, the insulating sleeve is formed by assembling a pair of structures with the same appearance structure, the assembling operation of the insulating sleeve is facilitated through the arrangement mode, and the insulating sleeve is made of ceramic. According to the utility model, through the insulation sleeve made of ceramic, the anti-aging capability can be improved, and the protection effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a protective head for capacitors. Background Art

[0002] The capacitor protection head is a component installed on the capacitor connection column to prevent the wire and the connection column from oxidation or poor contact when the wire is connected. It is usually made of plastic. In specific applications, it is found that plastic is prone to aging and cracking under the action of external force. In addition, the temperature at the connection column is high, which exacerbates the aging rate of the protection head. Utility Model Content

[0003] The utility model provides a protective head for a capacitor, which solves the deficiencies of the prior art, improves the protective effect, prolongs the service life and has strong practicability.

[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0005] A protective head for a capacitor includes a capacitor, a connecting column is provided at the upper end of the capacitor, and an insulating rubber sleeve is provided at the root of the connecting column. An insulating ring is provided at the lower end of the insulating rubber sleeve, a ring groove is formed on the outer circumference of the insulating ring, and a convex ring is provided at the upper end of the insulating ring. The insulating ring is made of ceramic material. An insulating sleeve is provided on the outer circumference of the insulating ring, and the insulating sleeve is assembled by a pair of structures with the same appearance structure. This arrangement is convenient for assembling the insulating sleeve, and it is made of ceramic. A lower circular groove is provided at the lower end of the insulating sleeve, and a clamping ring is provided on the inner wall of the lower circular groove. The clamping ring is inserted into the ring groove. The connection between the clamping ring and the ring groove improves the stability after connection. An upper circular groove is provided at the upper end of the lower circular groove, and a connecting groove is connected to the upper end of the upper circular groove. A circular hole is provided at the upper end of the connecting groove, and the insulating rubber sleeve is inserted into the connecting groove, and the connecting column is inserted into the circular hole. An extension tube is provided on one side of the insulating sleeve, and the extension tube is used for the insertion of an external connecting wire and can limit the wire. The extension tube is connected to the upper circular groove, and a movable hole is opened on the extension tube. A connecting tube is provided on the other side of the insulating sleeve. An end cap is provided on the outer end of the connecting tube, and a nut is provided in the end cap. A screw is screwed on the nut, and a rotating cap is provided on the outer end of the screw. A concave part is rotatably provided on the rotating cap, and a movable ring is provided on the other end of the concave part. The movable ring sleeve is set on the extension tube, and a pressure plate is movably provided in the movable hole. The outer wall of the pressure plate is an inclined surface, and the inner end of the inclined surface extends inwardly. The inner circumference of the movable ring acts on the inclined surface. When the insulating sleeve is connected and assembled, the extension tube can be limited by the movable ring, and when the movable ring moves, the pressure plate can move inward, so that the pressure plate can constrain the wire, thereby avoiding the problem of unstable connection when the wire is pulled.

[0006] Furthermore, a pair of guide bars are provided on the extension tube, and the guide bars are passed through the movable ring. Screws can be set on the guide bars to facilitate the assembly of the insulating sleeve. Of course, the guide bars also play a guiding role in the movement of the movable ring.

[0007] Furthermore, a top sleeve is provided at the upper end of the insulating sleeve, a convex column is provided at the upper end of the top sleeve, an inlay groove is provided at the lower end of the top sleeve, an assembly groove is provided on the convex column, a thread is provided on the inner wall of the assembly groove, and the connecting column is connected to the assembly groove through a thread. The top sleeve is arranged on the upper end of the insulating sleeve to further constrain the insulating sleeve, thereby ensuring the stability after connection, and at the same time, the connection operation is convenient through the threaded connection.

[0008] Furthermore, in order to improve the limiting effect of the top sleeve on the insulating sleeve, the embedding groove has a conical structure, and the upper end of the embedding groove is a small end. The upper end of the insulating sleeve has a conical structure, and the upper end is a small end. The upper end of the insulating sleeve is passed through the embedding groove.

[0009] The advantages of the above technical solution are:

[0010] The utility model can improve the anti-aging ability and the protective effect by using the insulating sleeve made of ceramic. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 A three-dimensional structural diagram of one embodiment is shown.

[0013] Figure 2 A three-dimensional structural diagram of a capacitor is shown.

[0014] Figure 3 A three-dimensional structural diagram of the protection head is shown.

[0015] Figure 4 A three-dimensional structural diagram of an insulating ring is shown.

[0016] Figure 5 A three-dimensional structural diagram of the insulating sleeve is shown.

[0017] Figure 6 A structural diagram of the top sleeve is shown. DETAILED DESCRIPTION

[0018] like Figure 1 to Figure 6As shown, a protective head for a capacitor includes a capacitor 1, a connecting column 11 is provided at the upper end of the capacitor 1, and an insulating rubber sleeve 10 is provided at the root of the connecting column 11. An insulating ring 2 is provided at the lower end of the insulating rubber sleeve 10, and a ring groove 20 is formed on the outer circumference of the insulating ring 2, and a convex ring 21 is provided on the upper end of the insulating ring 2. An insulating sleeve 3 is sleeved on the outer circumference of the insulating ring 2, and a lower circular groove 30 is provided at the lower end of the insulating sleeve 3. A clamping ring 34 is provided on the inner wall of the lower circular groove 30, and the clamping ring 34 passes through the ring groove 20. An upper circular groove 31 is provided at the upper end of the lower circular groove 30, and a connecting groove 32 is connected to the upper end of the upper circular groove 31. A circular hole 33 is provided at the upper end of the connecting groove 32, and the insulating rubber sleeve 10 passes through the connecting groove 32, and the connecting column 11 passes through the circular hole 33. An extension tube 35 is provided on one side of the insulating sleeve 3, and the extension tube 35 is connected to the upper circular groove 31. A movable hole 37 is provided on the extension tube 35, and the insulating A connecting tube 370 is provided on the other side of the edge sleeve 3. An end cap 38 is provided on the outer end of the connecting tube 370. A nut 4 is provided inside the end cap 38. A screw rod 40 is screwed on the nut 4. A rotating cap 41 is provided on the outer end of the screw rod 40. A concave member 42 is rotatably provided on the rotating cap 41. A movable ring 43 is provided on the other end of the concave member 42. The movable ring 43 is sleeved on the extension tube 35. A pressing plate 44 is movably provided in the movable hole 37. The outer wall of the pressing plate 44 is an inclined surface 45. The inner end of the inclined surface 45 extends inwardly. The inner periphery of the movable ring 43 acts on the inclined surface 45. A pair of guide bars 36 are provided on the extension tube 35. The guide bars 36 pass through the movable ring 43. The upper end of the insulating sleeve 3 is provided with a top sleeve 5, the upper end of the top sleeve 5 is provided with a convex column 51, the lower end of the top sleeve 5 is provided with an inlay groove 50, the convex column 51 is provided with an assembly groove 52, the inner wall of the assembly groove 52 is provided with a thread, and the connecting column 11 is connected to the assembly groove 52 through the thread. The inlay groove 50 is a conical structure, and the upper end of the inlay groove 50 is a small end, the upper end of the insulating sleeve 3 is a conical structure, and the upper end is a small end, and the upper end of the insulating sleeve 3 is inserted into the inlay groove 50.

[0019] When protecting the connecting column 11 on the capacitor in this embodiment, the insulating ring 2 is first put on the connecting column 11, and the insulating ring 2 and the connecting column 11 are connected and fixed by glue. After the fixing is completed, the wire is fixed on the connecting column 11 by soldering, and then the insulating sleeve 3 is put on the outside of the connecting column 11, and the wire is passed through the extension tube 35 when putting it, and then the nut 4 is fixed in the end cap 38 by glue, and then the movable ring 43 is put on the extension tube 35, and the rotating cap 41 is rotated to make the movable ring 43 move outward, and during the movement, the pressure plate 44 will act on the outside of the wire, thereby completing the positioning of the wire. After the positioning is completed, the top sleeve 5 is then put on the upper end of the insulating sleeve 3, and then the top sleeve 5 is rotated, and the insulating sleeve 3 is fixed again by the rotation of the top sleeve 5. After the fixing is completed, glue can be squeezed into the gap of the insulating sleeve 3 to seal the inside of the insulating sleeve 3.

[0020] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A protective head for a capacitor, characterized in that: It comprises a capacitor (1), wherein the upper end of the capacitor (1) is provided with a connecting column (11), and the root of the connecting column (11) is provided with an insulating rubber sleeve (10); An insulating ring (2) is provided at the lower end of the insulating rubber sleeve (10), a ring groove (20) is formed on the outer circumference of the insulating ring (2), and a convex ring (21) is provided at the upper end of the insulating ring (2); An insulating sleeve (3) is sleeved on the outer circumference of the insulating ring (2). A lower circular groove (30) is provided at the lower end of the insulating sleeve (3). A snap ring (34) is provided on the inner wall of the lower circular groove (30). The snap ring (34) is inserted into the ring groove (20). An upper circular groove (31) is provided at the upper end of the lower circular groove (30). The upper end of the upper circular groove (31) is connected to a connecting groove (32). A circular hole (33) is provided at the upper end of the connecting groove (32). The insulating rubber sleeve (10) is inserted into the connecting groove (32). The connecting column (11) is inserted into the circular hole (33). An extension tube (35) is provided on one side of the insulating sleeve (3). The extension tube (35) is connected to the upper circular groove (31). A movable hole (37) is provided on the extension tube (35). A connecting tube (370) is provided on the other side of the insulating sleeve (3). An end cap (38) is provided at the outer end of the connecting tube (370). A nut (4) is provided inside the end cap (38). A screw rod (40) is screwed onto the nut (4). A rotating cap (41) is provided at the outer end of the screw rod (40). A concave member (42) is rotatably provided on the rotating cap (41). A movable ring (43) is provided at the other end of the concave member (42). The movable ring (43) is sleeved on the extension tube (35). A pressing plate (44) is movably provided in the movable hole (37). The outer wall of the pressing plate (44) is an inclined surface (45). The inner end of the inclined surface (45) extends inwardly in an inclined manner. The inner periphery of the movable ring (43) acts on the inclined surface (45).

2. The capacitor protection head according to claim 1, characterized in that: A pair of guide strips (36) are provided on the extension tube (35), and the guide strips (36) are passed through the movable ring (43).

3. The capacitor protection head according to claim 1, characterized in that: The upper end of the insulating sleeve (3) is provided with a top sleeve (5), the upper end of the top sleeve (5) is provided with a convex column (51), the lower end of the top sleeve (5) is provided with an inlay groove (50), the convex column (51) is provided with an assembly groove (52), the inner wall of the assembly groove (52) is provided with a thread, and the connecting column (11) is connected to the assembly groove (52) through the thread.

4. The capacitor protection head according to claim 3, characterized in that: The embedding groove (50) has a conical structure, and the upper end of the embedding groove (50) is a small end. The upper end of the insulating sleeve (3) has a conical structure, and the upper end is a small end. The upper end of the insulating sleeve (3) is inserted into the embedding groove (50).

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