CN213990133U

CN213990133U - Over-voltage and under-voltage protector for three-phase four-wire system

Info

Publication number: CN213990133U
Application number: CN202022999461.8U
Authority: CN
Inventors: 吕学学; 杨勇; 赵凯钒; 蒋天贞; 蔡君
Original assignee: Yueqing Yijin Electronic Co ltd
Current assignee: Yueqing Yijin Electronic Co ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-17
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses an under-voltage protector of crossing of three-phase four-wire solves the problem that under-voltage protector spatial layout is unreasonable, bulky, the quality is unstable etc. crossed at the present stage. The zero line testing device comprises a shell, a relay control module, and an inlet end and an outlet end of a zero line, wherein a metal connecting sheet is connected between the inlet end and the outlet end of the zero line, the metal connecting sheet crosses over the relay control module to connect two ends, and the inner side surface of the shell is close to the left side surface and the right side surface of the relay control module. The connecting mode of the zero line in the protector product is changed, the metal connecting sheet is used for connecting the inlet end and the outlet end of the zero line, the metal connecting sheet spans the upper side of the relay control module, the size of the original soft woven wire is saved, the width is reduced, the space layout is more reasonable, the whole product size is smaller, the cost is reduced, the metal connecting sheet is compared with the soft woven wire, welding is not needed, the processing cost is reduced, the mechanical performance is more stable, the design is more reliable and safer, and the product quality is favorably improved.

Description

Over-voltage and under-voltage protector for three-phase four-wire system

Technical Field

The utility model relates to a protector field, especially an under-voltage protector crosses of three-phase four-wire.

Background

The overvoltage and undervoltage protector is a common electrical appliance in the field of electrical appliances, is often used in a circuit in cooperation with a circuit breaker, and is used in distribution lines of families and markets as protection of overvoltage, undervoltage, phase failure and zero line failure. The existing zero line inlet and outlet end line connection of the overvoltage and undervoltage protector is directly composed of a soft woven wire and bending pieces, the soft woven wire and the bending pieces are connected through welding, and the soft woven wire penetrates through the side face of the relay control module and is connected with the inlet and outlet ends. However, such a protector generally has a width of 72mm, a large width, a large volume in an installation space, and an unreasonable spatial layout, which not only makes it difficult to miniaturize the product, but also greatly increases material costs. In addition, the phenomenon of looseness, distortion and the like easily occurs when the multi-strand welding soft weaving wire is welded, instability of product quality is easily caused, and the performance of the over-voltage and under-voltage protector is also influenced.

Disclosure of Invention

The utility model aims at: in order to overcome prior art's defect, the utility model provides a three-phase four-wire cross undervoltage protection ware solves current stage and crosses undervoltage protection ware spatial layout unreasonable, bulky, quality unstability scheduling problem.

The technical scheme of the utility model: the zero line testing device comprises a shell, a relay control module and an inlet end and an outlet end of a zero line, wherein a metal connecting sheet is connected between the inlet end and the outlet end of the zero line, the metal connecting sheet spans over the relay control module and is connected with two ends, and the inner side surface of the shell is close to the left side surface and the right side surface of the relay control module.

Adopt above-mentioned technical scheme, under the prerequisite that keeps original function, the connected mode of zero line in the protector product has been changed, use metallic interconnect piece to connect zero line access end, and metallic interconnect piece strides in relay control module's top, the volume of the electric wire is woven to the soft originally having been saved, the width reduces, spatial layout is more reasonable, whole product volume is littleer, the cost is reduced, in addition, metallic interconnect piece itself is compared in the soft electric wire of weaving, need not the welding, reduce the processing cost, mechanical properties is more stable, the design is more reliable safety, be favorable to improving the quality of product.

The utility model discloses a further setting: the metal connecting piece is including two sections connecting horizontal segment, two sections vertical section and the section of spaning that is located the intermediate position, the section of spaning is located relay control module top and is close to relay control module's upper surface, two sections vertical section connect in the both ends of the section of spaning and with span the section perpendicular, the vertical section still is close to relay control module's front and back side, two sections connect the horizontal section respectively connect in corresponding vertical section and perpendicular with the vertical section, two sections connect the horizontal section respectively with the entrance point of zero line, exit end be connected.

Adopt above-mentioned further setting, the metal connecting piece wholly presents "nearly" style of calligraphy shape, hugs closely the setting of relay control module, and structural design is compacter, makes the protector keep original height.

The utility model discloses a further setting again: the inlet end and the outlet end of the zero line are both provided with wire holders, and the connecting horizontal section penetrates through the wire holders.

Adopt above-mentioned further setting again, the equipment of the metal connecting piece of being convenient for.

The utility model discloses a still further set up: the metal connecting sheet is manufactured by punching.

By adopting the above further arrangement, the manufacturing is convenient, the cost is reduced, the processing time is saved, and the processing is simple.

The utility model discloses a still further set up: the metal connecting sheet is made of copper or copper alloy.

By adopting the further arrangement, the metal connecting sheet has good conductivity, long service life and simple forming.

The utility model discloses a still further set up: protruding edges extend from two sides of the connecting horizontal section, and the protruding edges are matched with the shell to form clamping fixation.

The metal connecting sheet is further arranged for fixing the metal connecting sheet, so that the metal connecting sheet is convenient to assemble.

The utility model discloses a still further set up: and the inlet end of the zero line is also connected with an external lead.

By adopting the above further arrangement, the lead does not need to be additionally searched to be connected with other electrical appliances, and meanwhile, the operation step of screwing the screw for fixing the lead when the outlet end is connected is omitted, so that the operation efficiency is improved, and the time and the labor are saved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the metal connecting sheet of the present invention;

the device comprises a shell 1, a relay control module 2, an inlet end 3 of a zero line, an outlet end 4 of the zero line, a metal connecting sheet 5, a connecting horizontal section 51, a vertical section 52, a cross section 53, a rib 54, a wire holder 6 and an external lead 7.

Detailed Description

If fig. 1, the under-voltage protector that crosses of three-phase four-wire shown in fig. 2, including casing 1, the entrance point 3 of relay control module 2 and zero line, exit end 4, the entrance point 3 of zero line, be connected with metallic interconnect piece 5 between the exit end 4, metallic interconnect piece 5 strides across relay control module top and connects both ends, the shared space of soft braided wire of original zero line saves, reduce the casing, the inboard side that makes casing 1 is pressed close to with relay control module 2's left and right sides mutually, thus, the width of protector can reach 54mm, reduce the width by a wide margin, make the protector can be applied to in the less line environment in space.

The metal connecting sheet 5 is integrally in a shape like a Chinese character ji, and comprises two connecting horizontal sections 51, two vertical sections 52 and a cross section 53 positioned in the middle, wherein the cross section 53 is positioned above the relay control module 2 and close to the upper surface of the relay control module 2, the two vertical sections 52 are connected to two ends of the cross section 53 and are vertical to the cross section 53, the vertical sections 52 are also close to the front side surface and the rear side surface of the relay control module 2, the two connecting horizontal sections 51 are respectively and integrally connected to the corresponding vertical sections 52 and are vertical to the vertical sections 52, and the two connecting horizontal sections 51 are respectively connected with the inlet end 3 and the outlet end 4 of a zero line. In order to maintain the original height of the protector, the metal connecting sheets 5 are integrally arranged to be closely attached to the upper surface and the front and rear side surfaces of the relay control module 2.

The inlet end 3 and the outlet end 4 of the zero line are both provided with wire holders 6, and the connecting horizontal section 51 penetrates through the wire holders 6. When assembling, the connection horizontal section 51 is inserted into the wire holder 6, and then the wire holder 6 is fixed by being inserted into the housing 1.

The metal connecting sheet 5 is manufactured by stamping, is made of copper or copper alloy, and has the advantages of simple and convenient processing, easy material taking, lower manufacturing cost and good electric conductivity.

The two sides of the connecting horizontal section 51 are extended with convex ribs 54, the connecting horizontal section 51 is integrally T-shaped, and the convex ribs 54 are matched with the shell 1 to form clamping fixation.

The technical scheme of the utility model can not only be applicable to in the protector that ordinary conventionality does not have external conductor, can also be arranged in having external conductor 7's protector. The inlet end 3 of the zero line is also connected with an external lead 7, the inlet end of the live wire is also connected with the external lead 7, wherein the external lead 7 of the zero line can be welded on a wire holder 6 at the position, and the external lead 7 of the live wire is directly led out by the relay control module 2.

Claims

1. The utility model provides a three-phase four-wire crosses under-voltage protector, is including the entrance point, the exit end of casing, relay control module and zero line, its characterized in that: and a metal connecting sheet is connected between the inlet end and the outlet end of the zero line, the metal connecting sheet crosses over the relay control module to connect two ends, and the inner side surface of the shell is close to the left side surface and the right side surface of the relay control module.

2. The three-phase four-wire over-voltage and under-voltage protector of claim 1, wherein: the metal connecting piece is including two sections connecting horizontal segment, two sections vertical section and the section of spaning that is located the intermediate position, the section of spaning is located relay control module top and is close to relay control module's upper surface, two sections the vertical section is connected in the both ends of the section of spaning and just with span the section perpendicular, the vertical section is still close to the front and back side in relay control module, two sections connecting the horizontal section and connecting respectively on corresponding vertical section and perpendicular with the vertical section, two sections connecting the horizontal section and being connected with entrance point, the exit end of zero line respectively.

3. The three-phase four-wire over-voltage and under-voltage protector of claim 2, wherein: wire holders are arranged at the inlet end and the outlet end of the zero line, and the connecting horizontal section penetrates through the wire holders.

4. The three-phase four-wire over-and-under voltage protector according to claim 1 or 2, characterized in that: the metal connecting sheet is manufactured by stamping.

5. The three-phase four-wire over-and-under voltage protector according to claim 1 or 2, characterized in that: the metal connecting sheet is made of copper or copper alloy.

6. The three-phase four-wire over-voltage and under-voltage protector of claim 2, wherein: protruding edges extend from two sides of the connecting horizontal section, and the protruding edges are matched with the shell to form clamping fixation.

7. The three-phase four-wire over-voltage and under-voltage protector of claim 3, wherein: and the inlet end of the zero line is also connected with an external lead.