A capacitor wiring structure

Abstract

The utility model provides a kind of capacitor wiring structure, including the porcelain sleeve of the wiring post of capacitor and is arranged, the wiring post top surface is opened into wire hole, and the contact piece is equipped in wire hole, the porcelain sleeve top detachably connects fixed sleeve, the fixed sleeve center hole is opposite into wire hole, the fixed sleeve top extends several pawls, and each pawl top inside is provided with protrusion, the fixed sleeve is provided with outer thread part, and is connected by outer thread part thread fastening sleeve, and fastening sleeve is rotated and locked tightly fixed pawl.The utility model fixed sleeve center hole and the into wire hole of wiring post are opposite, and wire is conveniently inserted into wire hole and contact piece abuts, pawl, protrusion and fastening sleeve, form locking structure, to lock tightly fixed wire inserted in wiring post, make wire and capacitor stable connection, improve capacitor wiring convenience and stability.

Description

Technical Field

[0001] This utility model belongs to the field of capacitor technology, and in particular relates to a capacitor wiring structure. Background Technology

[0002] Currently, the connection structure of high-voltage capacitors includes terminal 5 and porcelain bushing 2, such as Figure 5 , Figure 6 As shown, the porcelain sleeve 2 is located outside the terminal 5. A vertical inlet hole 51 is opened inside the terminal 5, and a contact piece 6 is installed inside the inlet hole 51. A wiring hole 52 is opened in the wall of the inlet hole 51. A pressing block 8 is installed above the wiring hole 52, and a barb block 10 is installed at the bottom of the pressing block 8. A push-down structure 9 is installed at the top of the terminal 5 to push the pressing block 8 downwards. When connecting the capacitor to external wires, the wire is inserted through the wiring hole 52, then bent into the inlet hole 51 until it abuts against the contact piece 6. Finally, the push-down structure 9 pushes the pressing block 8 downwards, and the barb block 10 inserts into the wire, locking and fixing the wire in place.

[0003] Although this plug-in wiring structure achieves a stable connection between the wire and the capacitor, since the wiring hole 52 and the inlet hole 51 are set vertically, the wire must be bent at a small angle beforehand to form a bent part before being inserted into the wiring hole 52. Then, at the bend position between the wiring hole 52 and the inlet hole 51, the bent part will be deformed by pressure and enter the inlet hole 51. In order to make the bent part correspond to the inlet hole 51 for insertion, the insertion direction of the bent part must be manually adjusted repeatedly, which makes it inconvenient to insert the wire. Utility Model Content

[0004] In view of this, the present invention aims to propose a capacitor wiring structure to improve the convenience and stability of capacitor wiring.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A capacitor wiring structure includes a ceramic sleeve disposed at the terminal of the capacitor. An inlet hole is opened on the top surface of the terminal, and a contact piece is disposed in the inlet hole. A fixing sleeve is detachably connected to the top of the ceramic sleeve. The center hole of the fixing sleeve is directly opposite the inlet hole. Several claws extend from the top of the fixing sleeve. A protrusion is provided on the inner side of the top of each claw. The fixing sleeve is provided with an external thread, and a fastening sleeve is threadedly connected to the external thread. The fixing claws are screwed and locked onto the fastening sleeve.

[0007] Furthermore, the bottom end of the fixing sleeve is provided with an outer edge, and the top of the ceramic sleeve is provided with a protruding ring on the outer edge, and the outer edge and the protruding ring are connected by screws;

[0008] The external threaded portion protrudes from the outer circumferential surface of the fixing sleeve. The central hole of the fastening sleeve includes a locking hole and a threaded hole arranged sequentially from top to bottom. The threaded hole and the external threaded portion are threadedly connected. The diameter of the locking hole corresponds to the outer diameter of the fixing sleeve.

[0009] Furthermore, a sealing ring is fixedly provided inside the fixing sleeve.

[0010] Furthermore, the sealing ring is positioned near the bottom end of the fixing sleeve.

[0011] Furthermore, an annular groove is formed on the wall of the central hole of the fixing sleeve corresponding to the sealing ring, and the sealing ring is fixed in the annular groove.

[0012] Furthermore, a sealing structure is provided between the fixing sleeve and the ceramic sleeve.

[0013] Furthermore, the outer circumferential surface of the fastening sleeve is rolled with patterns.

[0014] Compared with the prior art, the capacitor wiring structure of this utility model has the following advantages:

[0015] The center hole of the fixing sleeve and the inlet hole of the terminal block are aligned, which facilitates the wire to pass through the inlet hole and abut against the contact plate. The claws extending from the top of the fixing sleeve, the protrusions on the top of the claws, and the fastening sleeve connected by the external thread of the fixing sleeve form a locking structure to lock and fix the wires passing through the terminal block in a circumferential manner, so as to ensure a stable connection between the wires and the capacitor and improve the convenience and stability of capacitor wiring. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is a front view of a capacitor wiring structure according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the capacitor wiring structure in the embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the fixing sleeve structure in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the fastening sleeve structure in an embodiment of the present utility model;

[0021] Figure 5 A 3D schematic diagram of the existing capacitor wiring;

[0022] Figure 6This is a diagram of the existing capacitor wiring structure.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Capacitor; 2-Porcelain sleeve; 3-Fixing sleeve; 31-Claw; 32-Outer edge; 33-External thread; 34-Protrusion; 35-Annular groove; 4-Fastening sleeve; 41-Threaded hole; 42-Locking hole; 5-Terminal; 51-Wire inlet hole; 6-Contact piece; 7-Sealing ring; 8-Extrusion block; 9-Push-down structure; 10-Barb block; 52-Wire connection hole. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 , Figure 2A capacitor wiring structure includes a ceramic sleeve 2 installed at the terminal 5 of a capacitor 1. The ceramic sleeve 2 can be installed on the capacitor 1 by screws. An inlet hole 51 is opened on the top surface of the terminal 5. The inlet hole 51 is preferably a blind hole, and a contact piece 6 is provided inside the inlet hole 51. The contact piece 6 is preferably a vertically arranged spring structure, with at least one, and preferably two, arranged opposite each other. During wiring, an external wire is inserted into the inlet hole 51 and abuts against the contact piece 6 to complete the capacitor wiring. A fixing sleeve 3 is detachably connected to the top of the ceramic sleeve 2. The center hole of the fixing sleeve 3 is aligned with the inlet hole 51. Several claws 31 extend from the top of the fixing sleeve 3, and the claws 31 are evenly arranged circumferentially. Each claw 31 has a protrusion 34 on its inner top side, and the diameter of the circle formed by the protrusions 34 is smaller than the diameter of the wire used for capacitor wiring. The fixing sleeve 3 has an external thread 33, through which a fastening sleeve 4 is threadedly connected. The fastening sleeve 4 is screwed on to lock the fixing claws 31.

[0030] In this utility model, the fixing sleeve 3 is used for threading wires. Since the center hole of the fixing sleeve 3 and the wire inlet hole 51 of the terminal 5 are concentric and aligned, it is convenient to thread wires. The claw 31, the protrusion 34 and the fastening sleeve 4 form a locking structure, which locks and fixes the wires in the circumferential direction to ensure the stability of the capacitor wiring.

[0031] Fixed sleeve structure such as Figure 3 As shown, an outer edge 32 is provided at the bottom, and an external threaded portion 33 protrudes from the outer circumference of the fixing sleeve 3. A distance is left between the external threaded portion 33 and the top of the fixing sleeve 3. An annular groove 35 for installing a sealing ring is formed in the wall of the central hole of the fixing sleeve 3 near the bottom. The fastening sleeve structure is as follows. Figure 4 As shown, the outer circumferential surface of the fastening sleeve 4 is rolled with a pattern, and its central hole includes a locking hole 42 and a threaded hole 41 arranged sequentially from top to bottom. The threaded hole 41 and the external threaded part 33 are correspondingly arranged, and the diameter of the locking hole 42 corresponds to the outer diameter of the fixing sleeve 3.

[0032] A raised ring is provided on the top of the porcelain sleeve 2, facing outwards. The outer edge 32 and the raised ring are connected by screws, and a sealing washer is provided between the outer edge and the raised ring to form a sealing structure, realizing a detachable and sealed connection between the fixing sleeve 3 and the porcelain sleeve 2. A fixing sealing ring 7 is bonded in the annular groove 35. The sealing ring 7 is a rubber ring used to wrap the inserted wire and prevent dust or water from entering the inlet hole 51. The threaded hole 41 of the fastening sleeve 4 is threadedly connected to the external thread 33 of the fixing sleeve 3, so that the fastening sleeve 4 can move up or down when rotated. After the fastening sleeve 4 is installed, the wall of its locking hole 42 fits or abuts against the outer circumferential surface of the fixing sleeve 3.

[0033] The working principle of this utility model is as follows: The insulation layer at the end of the wire is peeled off to form a bare wire segment. The length of the bare wire segment is appropriate, ensuring that the sealing ring 7 can wrap around the insulation layer of the wire. The wire is inserted through the central hole of the fixing sleeve 3. During insertion, the wire pushes outward against the protrusion 34 of the claw 31, causing the upper end of the claw 31 to swing outward. When the entire bare wire segment enters the inlet hole 51 of the terminal 5 and abuts against the contact piece 6, the sealing ring 7 wraps around the wire, forming a seal. Then, the fastening sleeve 4 is rotated to move it upward, and the wall of the locking hole 42 presses against the claw 31, causing it to swing inward, so that the protrusion 34 clamps the wire. At this point, several protrusions 34 evenly arranged in the circumferential direction wrap around and clamp the wire, completing the wire installation. Alternatively, before installing the fixing sleeve 3 and the porcelain sleeve 2, the wire can be inserted into the fixing sleeve 3 until the entire bare wire segment passes through the sealing ring 7. Then, the fixing sleeve 3 and the porcelain sleeve 2 are connected and fixed, and the wire is pushed inward until the bare wire segment abuts against the contact piece 6. Finally, the fastening sleeve 4 is used to lock and fix the wire.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A capacitor wiring structure, comprising a ceramic sleeve (2) disposed at a terminal (5) of a capacitor (1), wherein a wire inlet hole (51) is formed on the top surface of the terminal (5), and a contact piece (6) is disposed within the wire inlet hole (51), characterized in that: The top of the ceramic sleeve (2) is detachably connected to the fixing sleeve (3). The center hole of the fixing sleeve (3) is directly opposite the inlet hole (51). Several claws (31) extend from the top of the fixing sleeve (3). A protrusion (34) is provided on the inner side of the top of each claw (31). The fixing sleeve (3) is provided with an external thread (33). The fastening sleeve (4) is threaded through the external thread (33). The fastening sleeve (4) is screwed on to lock the fixing claws (31).

2. The capacitor wiring structure according to claim 1, characterized in that: The bottom end of the fixed sleeve (3) is provided with an outer eave (32), and the top of the ceramic sleeve (2) is provided with a convex ring on the outer eave. The outer eave (32) and the convex ring are connected by screws. The external threaded part (33) protrudes from the outer circumferential surface of the fixing sleeve (3). The central hole of the fastening sleeve (4) includes a locking hole (42) and a threaded hole (41) arranged sequentially from top to bottom. The threaded hole (41) and the external threaded part (33) are threadedly connected. The diameter of the locking hole (42) corresponds to the outer diameter of the fixing sleeve (3).

3. The capacitor wiring structure according to claim 1, characterized in that: A sealing ring (7) is fixedly provided inside the fixing sleeve (3).

4. A capacitor wiring structure according to claim 3, characterized in that: The sealing ring (7) is positioned near the bottom of the fixing sleeve (3).

5. A capacitor wiring structure according to claim 3, characterized in that: The fixing sleeve (3) has an annular groove (35) on the wall of the central hole corresponding to the sealing ring (7), and the sealing ring (7) is fixed in the annular groove (35).

6. A capacitor wiring structure according to claim 1, characterized in that: A sealing structure is provided between the fixed sleeve (3) and the ceramic sleeve (2).

7. A capacitor wiring structure according to claim 1, characterized in that: The outer circumference of the fastening sleeve (4) is rolled with patterns.

Images