Composite combined electric appliance and electric connection device of composite combined electric appliance

Abstract

The utility model provides a combined type combined electric appliance and an electric connection device of the combined type combined electric appliance, and belongs to the field of electric switches. The electrical connection device comprises a plug-in body and a matching body which are respectively arranged on a boss of a contact seat and an insulator and are mutually plugged, the plug-in body comprises a joint and a transition piece, one axial end face of the transition piece is perpendicular to the axis of the transition piece, and the other axial end face of the transition piece is arranged at an included angle with the axis of the transition piece. The two axial end faces of the transition piece are used for being in butt joint with the corresponding end faces of the boss and the connector respectively, a first fastening piece used for being in threaded assembly with the boss is arranged on the transition piece in a penetrating mode, and a second fastening piece in threaded assembly with the transition piece is arranged on the connector in a penetrating mode. The composite combined electric appliance comprises the electric connection device. According to the utility model, the transition piece is utilized to carry out transition electrical connection between the boss on the static contact seat and the joint, and the inclined surface is processed on the transition piece, so that the inclined surface does not need to be processed on the boss and the joint, and the overall cost is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electric switch, especially relates to a combined electric appliance and electric connection device of combined electric appliance. BACKGROUND

[0002] The combined electric appliance seals the main components such as circuit breaker, disconnecting switch, grounding switch and current transformer in the metal shell filled with SF6 gas, and has the advantages of compact structure and small space occupation.

[0003] Generally, the combined electric appliance is based on tank circuit breaker, and the disconnecting switch and the circuit breaker are provided with the structure of electrically connected. The Chinese utility model patent with the authorization announcement number CN201319346Y discloses a SF6 combined high-voltage electric appliance, which comprises a circuit breaker, a disconnecting switch, a grounding switch and a current transformer, a basin-type insulator is arranged between the disconnecting switch and the grounding switch, an intermediate conductor is fixedly arranged on the basin-type insulator, a contact finger seat (i.e. a plum-blossom contact seat) for electrically connecting with the intermediate conductor is arranged on the movable contact seat of the circuit breaker, and the intermediate conductor on the basin-type insulator is inserted into the contact finger seat to realize electrical connection during assembly.

[0004] The contact finger seat in the above-mentioned utility model patent needs to be installed on the boss machined on the movable contact seat, so that the contact finger seat and the intermediate conductor constitute the electric connection device for conducting electricity between the boss and the basin-type insulator. Since the disconnecting switch in the combined electric appliance is generally arranged in an inclined manner, the intermediate conductor is also in an inclined state, and the contact finger seat matched with the intermediate conductor also needs to be arranged in an inclined manner. In order to realize the inclined installation of the contact finger seat, the bottom surface of the contact finger seat can be machined into an inclined surface, but this needs to specially customize the contact finger seat, which is high in cost, and since the bolt for fixing the contact finger seat and the bottom surface of the contact finger seat form a certain angle, the installation of the contact finger seat is also inconvenient.

[0005] In order to realize the inclined arrangement of the contact finger seat, the table surface of the boss can also be machined into an inclined surface, and a threaded hole inclined in the same way also needs to be machined on the inclined surface, or the bottom surface of the contact finger seat is machined into an inclined surface. The fixed connection device of the tank circuit breaker static contact seat disclosed in the Chinese utility model patent with the authorization announcement number CN212570825U, in which the boss with the inclined end surface is machined on the static contact seat to install the contact finger seat. However, the size of the static contact seat or the movable contact seat is relatively large, which is inconvenient for machining the inclined surface thereon or machining the threaded hole inclined in the same way, otherwise the machining cost of the combined electric appliance will be increased. UTILITY MODEL CONTENTS

[0006] The utility model discloses a composite combined electrical appliance, which solves the technical problem of high processing cost caused by the need to process a bevel on the boss of the contact finger seat or the contact head seat in order to enable the intermediate conductor and the contact finger seat of the electrical connection device to be obliquely arranged.

[0007] Another object of the utility model is to provide an electrical connection device of a composite combined electrical appliance to solve the above technical problem.

[0008] To achieve the above object, the utility model provides a composite combined electrical appliance technical scheme, which comprises a contact head seat and an insulator.

[0009] The utility model discloses a composite combined electrical appliance, which comprises a contact head seat and an insulator, a boss is arranged on the contact head seat, an electrical connection device is arranged between the boss and the insulator, the electrical connection device comprises a plug-in body and a matching body which are arranged on the boss and the insulator respectively and are inserted into each other, the top end surface of the boss is parallel to the axis of the contact head seat, the plug-in body comprises a connector and a transition piece which is connected between the connector and the boss, the axial one end surface of the transition piece is perpendicular to the axis of the transition piece, the axial other end surface of the transition piece is arranged at an angle to the axis of the transition piece, the axial two end surfaces of the transition piece are respectively butted against the corresponding end surfaces of the boss and the connector, the transition piece is connected with the boss through a first fastener which penetrates through the transition piece and is screw-assembled on the boss, and the connector is connected with the transition piece through a second fastener which penetrates through the connector and is screw-assembled on the transition piece.

[0010] As a further improvement, the end surface of the transition piece butted against the connector is a connecting end surface, the end surface of the transition piece butted against the boss is a mounting end surface, the connecting end surface is perpendicular to the axis of the transition piece, and the mounting end surface is arranged at an angle to the axis of the transition piece, and the axis of the first fastener is perpendicular to the mounting end surface.

[0011] As a further improvement, a plug-in hole is arranged on the matching body for the insertion of the connector, a mounting groove is arranged on the end surface of the connector inserted into the plug-in hole along the axial direction of the connector, and a connecting hole is arranged on the groove bottom wall of the mounting groove, which penetrates through the connector along the axial direction and is used for the penetration of the second fastener.

[0012] As a further improvement, two first fasteners and two second fasteners are arranged, the two first fasteners are arranged at intervals along a first direction, the two second fasteners are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.

[0013] As a further improvement, one of the boss and the transition piece is provided with a positioning protrusion, and the other is provided with a positioning groove matched with the positioning protrusion.

[0014] The beneficial effect is: the composite combination electric appliance provided by the utility model belongs to an improved invention.

[0015] To achieve the above-mentioned purpose, the technical scheme of the electric connection device of the composite combination electric appliance provided by the utility model is:

[0016] An electric connection device of a composite combination electric appliance, comprising a plug-in body and a matching body for being respectively arranged on a boss of a contact seat and an insulator and being inserted into each other, the plug-in body comprising a connector and a transition piece for transition connection between the connector and the boss of the contact seat, an axial one end surface of the transition piece is perpendicular to an axis thereof, and an axial other end surface thereof is arranged at an angle with the axis, the axial two end surfaces of the transition piece are respectively used for abutting against corresponding end surfaces of the boss and the connector, a first fastener is provided on the transition piece in a penetrating mode and is used for screwing with the boss, and a second fastener is provided on the connector in a penetrating mode and is used for screwing with the transition piece.

[0017] As a further improvement, the end surface of the transition piece for abutting against the connector is a connecting end surface, the end surface of the transition piece for abutting against the boss is a mounting end surface, the connecting end surface is perpendicular to the axis of the transition piece, and the mounting end surface is arranged at an angle with the axis of the transition piece, and the axis of the first fastener is perpendicular to the mounting end surface.

[0018] As a further improvement, the matching body is provided with a plug-in hole for the connector to be inserted into, an end surface of the connector for being inserted into the plug-in hole is provided with a mounting groove along an axial direction thereof, and a connecting hole penetrating through the connector along the axial direction and for the second fastener to pass through is arranged on a groove bottom wall of the mounting groove.

[0019] As a further improvement, the first fastener and the second fastener are both provided with two, the two first fasteners are arranged at intervals along a first direction, the two second fasteners are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.

[0020] As a further improvement, the end surface of the transition piece for abutting against the boss is provided with a positioning groove for cooperating with a positioning protrusion on the boss or is provided with a positioning protrusion for cooperating with the positioning groove on the boss.

[0021] The beneficial effect is: the electric connection device of the composite combination electric appliance provided by the utility model belongs to an improved invention. The electric connection device of the composite combination electric appliance utilizes the transition piece to perform transition electric connection between the boss on the static contact seat and the connector, and a bevel is processed on the transition piece, so that it is not necessary to process the bevel on the boss and the connector, and since the transition piece is small in size and simple in structure, it is convenient to process the transition piece and low in cost. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the electrical connection device in Embodiment 1 of the composite combined electrical appliance of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the assemblies in Embodiment 1 of the composite combined electrical appliance of this utility model;

[0024] Figure 3 This is a cross-sectional view of the transition piece in Embodiment 1 of the composite combined electrical appliance of this utility model;

[0025] Figure 4 This is a top view of the transition piece in Embodiment 1 of the composite combined electrical appliance of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Stationary contact seat; 2. Boss; 3. Mating body; 4. Insertion hole; 5. Guide ring; 6. Strap contact finger; 7. Ring groove; 8. Third fastener; 9. Disc spring; 10. Connector; 11. Transition piece; 12. Connecting end face; 13. Mounting end face; 14. First fastener; 15. Second fastener; 16. First threaded hole; 17. First connecting hole; 18. Second threaded hole; 19. Mounting groove; 20. Positioning groove; 21. Positioning protrusion. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments.

[0029] To address the problems in the prior art, the basic concept of this utility model is to provide a transition piece between the boss on the contact seat and the connector for transitional connection, thereby eliminating the need to provide bevels on the boss and connector, which facilitates processing.

[0030] Specific embodiment 1 of the composite combined electrical appliance provided by this utility model:

[0031] A composite electrical appliance includes a circuit breaker, a disconnecting switch, and an insulator located between the two. The circuit breaker includes a moving contact base and a stationary contact base 1, see Appendix. Figure 1 The stationary contact base 1 is provided with a boss 2, the end of the boss 2 away from the stationary contact base 1 being its top end, and the top end face of the boss 2 being parallel to the axis of the stationary contact base 1. The insulator can be a disc insulator or a basin insulator. The end of the insulator facing the disconnecting switch is used to fix and install the corresponding components of the disconnecting switch, and an electrical connection device is provided between the end of the insulator facing the circuit breaker and the boss 2 on the stationary contact base 1.

[0032] The electric connection device comprises a plug body arranged on the boss 2 and a mating body 3 arranged on the insulator, the plug body and the mating body 3 are plugged and matched with each other.

[0033] Referring to the drawings Figure 2 The mating body 3 is provided with a plug hole 4 for inserting the plug body, the plug hole 4 is provided with a guide ring 5 and a watchband contact finger 6, the guide ring 5 is made of high polymer material and is used for limiting the plug body in the radial direction during the process of inserting the plug body into the plug hole 4 of the mating body 3, so as to avoid the collision between the plug body and the inner wall of the plug hole 4. The watchband contact finger 6 is used for contacting and conducting with the outer circumferential surface of the plug body, so as to ensure the reliable electric connection between the plug body and the mating body 3. The watchband contact finger 6 and the guide ring 5 are respectively arranged in two ring grooves 7 formed on the hole wall of the plug hole 4. The mating body 3 in the embodiment can be assembled by using the existing contact seat.

[0034] An opening is formed on the hole bottom wall of the plug hole 4 for the third fastener 8 to pass through, and the mating body 3 is fixedly arranged on the insulator through the third fastener 8. The third fastener 8 is a bolt, and a disc spring 9 is arranged between the bolt head of the third fastener 8 and the hole bottom wall of the plug hole 4, so as to ensure that the mating body 3 and the conductor part on the insulator are reliably electrically connected.

[0035] The plug body comprises a joint 10 and a transition piece 11, the joint 10 is in an inclined state and can be inserted into the plug hole 4 and conduct with the mating body 3. Referring to the drawings Figure 3 and the drawings Figure 4 The transition piece 11 is used for transition connection between the joint 10 and the boss 2, an axial one end surface of the transition piece 11 is perpendicular to the axis thereof, and the end surface is a connecting end surface 12 used for abutting with the end surface of the joint 10; an axial other end surface of the transition piece 11 is arranged at an angle with the axis thereof, and the end surface is a mounting end surface 13 used for abutting with the end surface of the boss 2.

[0036] The transition piece 11 is connected with the boss 2 through the first fastener 14 penetrating through the transition piece 11, and the joint 10 is connected with the transition piece 11 through the second fastener 15 penetrating through the joint 10, and the first fastener 14 and the second fastener 15 are also bolts.

[0037] The boss 2 is provided with a first threaded hole 16 used for cooperating with the first fastener 14, and the axis of the first threaded hole 16 is perpendicular to the top end surface of the boss 2. The joint 10 is provided with a first connecting hole 17 coaxial with and corresponding to the first threaded hole 16, the first fastener 14 is screwed into the first threaded hole 16 after penetrating through the first connecting hole 17, so as to fixedly connect the transition piece 11 with the boss 2, and the first connecting hole 17 is a counterbore hole, so as to prevent the first fastener 14 from protruding from the transition piece 11 after being installed.

[0038] The connecting end surface 12 of the transition piece 11 is provided with a second threaded hole 18 for cooperating with the second fastener 15, and the axis of the second threaded hole 18 is perpendicular to the connecting end surface 12. An installation groove 19 is formed on the end surface of the joint 10 away from the transition piece 11, and a second connecting hole penetrating through the joint 10 along the axial direction of the joint 10 is arranged on the groove bottom wall of the installation groove 19. The second connecting hole corresponds to the second threaded hole 18 coaxially, and the second fastener 15 can be screwed into the second threaded hole 18 after penetrating through the second connecting hole, so that the joint 10 and the transition piece 11 are fixedly connected. After the installation groove 19 is arranged, on the one hand, the axial length of the second fastener 15 can be shorter, and on the other hand, the second fastener 15 can be hidden in the installation groove 19, so as to avoid the point discharge and interference collision with the third fastener 8.

[0039] The first fastener 14 and the second fastener 15 are both arranged in two, the two first fasteners 14 are arranged in a first direction, and the two second fasteners 15 are arranged in a second direction. The first direction is perpendicular to the second direction. In this way, on the one hand, the first fastener 14 and the second fastener 15 can be prevented from interfering with each other, and on the other hand, the distribution of the holes on the transition piece 11 can be uniform, and the thin-walled structure can be avoided. In other embodiments, the number and arrangement of the first fastener 14 and the second fastener 15 can be set as required.

[0040] The axis of the boss 2 is arranged at an angle with the axis of the static contact seat 1, and the boss 2 is coaxial with the transition piece 11. In this way, the corner structure at the connection position of the boss 2 and the transition piece 11 can be avoided, so as to facilitate reliable transmission of electric energy. The center position of the boss 2 is provided with a positioning groove 20, and the installation end surface 13 of the transition piece 11 is provided with a positioning protrusion 21 matched with the positioning groove 20. During assembly, the positioning protrusion 21 can be clamped into the positioning groove 20, so as to facilitate the centering of the boss 2 and the transition piece 11.

[0041] In other embodiments, according to the arrangement needs of the composite combined electric appliance, the electric connection device can also be arranged between the boss 2 on the moving contact seat and the corresponding insulator, which will not be described here.

[0042] The electric connection device in the composite combined electric appliance uses the transition piece 11 to make transition electric connection between the boss 2 on the static contact seat 1 and the joint 10. The convenience of assembly is high, and it is not necessary to process a bevel on the boss 2 and the joint 10. In addition, since the size of the transition piece 11 is small and the structure is simple, the transition piece 11 is convenient to process and has low cost.

[0043] A specific embodiment 2 of the composite combined electric appliance provided by the utility model:

[0044] The embodiment is based on the embodiment 1, and different from the embodiment 1 is that the axial end face of the transition piece for docking with the boss is perpendicular to the axis of the transition piece in the embodiment, and the axial end face of the transition piece for docking with the joint is arranged at an angle to the axis of the transition piece.

[0045] The axis of the boss is perpendicular to the axis of the stationary contact seat in the embodiment, the transition piece is coaxial with the boss, and the axis of the transition piece is arranged at an angle to the axis of the joint.

[0046] The specific embodiment 3 of the composite combined electrical apparatus provided by the utility model is as follows:

[0047] The embodiment is based on the embodiment 1, and different from the embodiment 1 is that the plug-in hole is arranged on the joint in the embodiment, and the matching body can be inserted into the plug-in hole of the joint.

[0048] The specific embodiment 4 of the composite combined electrical apparatus provided by the utility model is as follows:

[0049] The embodiment is based on the embodiment 1, and different from the embodiment 1 is that no mounting groove is arranged on the joint in the embodiment. The second connecting hole directly penetrates the joint along the axial direction, and the second connecting hole in the embodiment can be a counterbore.

[0050] The specific embodiment of the electric connection device of the composite combined electrical apparatus provided by the utility model is as follows:

[0051] The electric connection device of the composite combined electrical apparatus is the electric connection device in any one of the embodiments 1-4 of the composite combined electrical apparatus, and will not be described here.

[0052] Finally, it needs to be pointed out that the above-mentioned is only the preferred embodiment of the utility model, and is not used for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, still can modify the technical scheme recorded in the foregoing embodiments without paying the creative labor, or equivalent replacement is carried out to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A composite combined electrical appliance, comprising a contact base and an insulator, wherein a boss is provided on the contact base, and an electrical connection device is provided between the boss and the insulator, the electrical connection device comprising a plug-in body and a mating body respectively disposed on the boss and the insulator and mutually interlocking, characterized in that... The top end surface of the boss is parallel to the axis of the contact seat, the plug-in body comprises a joint and a transition piece connected between the joint and the boss, an axial one end surface of the transition piece is perpendicular to the axis thereof, and an axial other end surface thereof is arranged at an angle to the axis thereof, the axial two end surfaces of the transition piece are respectively butted against the corresponding end surfaces of the boss and the joint, the transition piece is connected with the boss through a first fastener penetrating through the transition piece and being screwed on the boss, and the joint is connected with the transition piece through a second fastener penetrating through the joint and being screwed on the transition piece.

2. The combination electrical device of claim 1, wherein the transition The end surface of the joint butted against the transition piece is a connecting end surface, and the end surface of the transition piece butted against the boss is a mounting end surface, the connecting end surface is perpendicular to the axis of the transition piece, and the mounting end surface is arranged at an angle to the axis of the transition piece, and the axis of the first fastener is perpendicular to the mounting end surface.

3. The combined electric appliance according to claim 1 or 2, wherein The joint is provided with a plug-in hole for the joint to be inserted into, and a mounting groove is arranged on an end surface of the joint for insertion into the plug-in hole along the axial direction of the end surface, and a connecting hole for the second fastener to pass through is arranged on the groove bottom wall of the mounting groove and penetrates through the joint along the axial direction.

4. The combination electrical device of claim 1 or 2, wherein, The first fastener and the second fastener are both provided with two, the two first fasteners are arranged at intervals along a first direction, the two second fasteners are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.

5. The combination electrical device of claim 1 or 2, wherein, One of the boss and the transition piece is provided with a positioning protrusion, and the other is provided with a positioning groove matched with the positioning protrusion.

6. An electrical connection device for a composite combined electrical apparatus comprising a plug body and a mating body for being respectively arranged on a boss of a contact holder and on an insulator and being inserted into each other, characterized in that, The plug-in body comprises a joint and a transition piece connected between the joint and the boss of the contact seat, an axial one end surface of the transition piece is perpendicular to the axis thereof, and an axial other end surface thereof is arranged at an angle to the axis thereof, the axial two end surfaces of the transition piece are respectively used for butting against the corresponding end surfaces of the boss and the joint, a first fastener is arranged penetrating through the transition piece and is used for being screwed on the boss, and a second fastener is arranged penetrating through the joint and is used for being screwed on the transition piece.

7. The combined electrical connection device of claim 6, wherein the transition The end surface of the joint butted against the transition piece is a connecting end surface, and the end surface of the transition piece butted against the boss is a mounting end surface, the connecting end surface is perpendicular to the axis of the transition piece, and the mounting end surface is arranged at an angle to the axis of the transition piece, and the axis of the first fastener is perpendicular to the mounting end surface.

8. The combined electrical connection device of claim 6 or 7, wherein the electrical connection device is a combined electrical connection device for a combined circuit breaker. The joint is provided with a plug-in hole for the joint to be inserted into, and a mounting groove is arranged on an end surface of the joint for insertion into the plug-in hole along the axial direction of the end surface, and a connecting hole for the second fastener to pass through is arranged on the groove bottom wall of the mounting groove and penetrates through the joint along the axial direction.

9. The combined electrical connection device of claim 6 or 7, wherein, The first fastener and the second fastener are both provided with two, the two first fasteners are arranged at intervals along a first direction, the two second fasteners are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.

10. The combined electrical connection device of claim 6 or 7, wherein the transition The end surface of the joint butted against the transition piece is a connecting end surface, and the end surface of the transition piece butted against the boss is a mounting end surface, the connecting end surface is perpendicular to the axis of the transition piece, and the mounting end surface is arranged at an angle to the axis of the transition piece, and the axis of the first fastener is perpendicular to the mounting end surface. The joint is provided with a plug-in hole for the joint to be inserted into, and a mounting groove is arranged on an end surface of the joint for insertion into the plug-in hole along the axial direction of the end surface, and a connecting hole for the second fastener to pass through is arranged on the groove bottom wall of the mounting groove and penetrates through the joint along the axial direction. The first fastener and the second fastener are both provided with two, the two first fasteners are arranged at intervals along a first direction, the two second fasteners are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction. The end surface of the joint butted against the transition piece is a connecting end surface, and the end surface of the transition piece butted against the boss is a mounting end surface, the connecting end surface is perpendicular to the axis of the transition piece, and the mounting end surface is arranged at an angle to the axis of the transition piece, and the axis of the first fastener is perpendicular to the mounting end surface. The joint is provided with a plug-in hole for the joint to be inserted into, and a mounting groove is arranged on an end surface of the joint for insertion into the plug-in hole along the axial direction of the end surface, and a connecting hole for the second fastener to pass through is arranged on the groove bottom wall of the mounting groove and penetrates through the joint along the axial direction.

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