CN215869149U

CN215869149U - Electronic overload relay

Info

Publication number: CN215869149U
Application number: CN202122058103.1U
Authority: CN
Inventors: 王彬鸣; 胡建国; 林铸鑫; 叶扬; 卢晨磊; 林敏敏
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2022-02-18
Anticipated expiration: 2031-08-30

Abstract

The utility model provides an electronic type overload relay, includes mutual-inductor and line bank, the mutual-inductor includes the casing and sets up the primary coil on the casing, the leading-out terminal of primary coil stretches one side of line bank, link to each other through the flexible coupling between the leading-out terminal of primary coil and the line bank, the primary coil the line bank is equipped with limit structure, and the line bank passes through limit structure and installs on the mutual-inductor, welds between the primary coil of line bank and mutual-inductor through the flexible coupling, and the flexible coupling can be crooked under the exogenic action because of having flexible characteristic, guarantees that the junction can not destroyed by external force, effectively improves the reliability that line bank and primary coil are connected.

Description

Electronic overload relay

Technical Field

The utility model relates to the field of low-voltage electric appliances, in particular to an electronic overload relay.

Background

The electronic overload relay is an electronic control device and also has the function of overload protection. The enameled wire of the leading-out terminal of the primary coil of the mutual inductor in the electronic overload relay needs to be connected with the wiring bar, and although the enameled wire can be clamped by a screw and a nut, the problem of unreliable electrifying performance exists, and the temperature rise of the wiring terminal is overhigh. In addition, although the enameled wire at the outlet end of the primary coil of the transformer can be directly welded with the wiring bar into a whole, the welding spot is easy to fall off under the action of external force, and meanwhile, the problems of high welding difficulty, large welding size and high assembly difficulty can be caused due to the fact that the enameled wire of a large-specification product is thick.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides an electronic overload relay which is reliable in connection and convenient to assemble.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an electronic type overload relay, includes mutual-inductor and line bank, the mutual-inductor includes the casing and sets up the primary coil on the casing, the leading-out terminal of primary coil stretches one side of line bank, link to each other through the flexible coupling between the leading-out terminal of primary coil and the line bank, the primary coil the line bank is equipped with limit structure, and the line bank passes through limit structure and installs on the mutual-inductor.

Preferably, the mutual inductor includes the coil skeleton, be equipped with the installation boss on the coil skeleton, limit structure is including setting up the mounting hole on the row of connecting, and the mounting hole can overlap the mounting panel spacing with the coil skeleton on the installation boss.

Preferably, the terminal strip includes wiring board and mounting panel, and the wiring board is used for connecting external conductor, and the mounting panel is equipped with dodges the hole, the leading-out terminal of primary coil passes dodges the hole and stretches the one side that the mutual-inductor was kept away from to the mounting panel, the leading-out terminal and the mounting panel of primary coil respectively with the flexible coupling welding.

Preferably, the mounting panel is U type structure, and the mounting panel includes right installation department and left installation department to and connect the well installation department between right installation department and left installation department one end, enclose into the hole of dodging of U type between right installation department, left installation department and the well installation department.

Preferably, the width D1 of the left mounting portion 28 is less than the width D2 of the right mounting portion 26, and the left mounting portion 28 is bendable to one side of the right mounting portion 26.

Preferably, the flexible connection comprises a first connecting portion, a second connecting portion and a transition portion connected between the first connecting portion and the second connecting portion, the second connecting portion and the transition portion are arranged on one side of the wire outlet end of the primary coil, and the first connecting portion and the second connecting portion are welded with the wire outlet end of the primary coil and the mounting plate respectively.

Preferably, the leading-out terminal and the well installation department interval of primary coil set up, first connecting portion welds with one side that the leading-out terminal of primary coil is close to left installation department, the one end of transition portion with first connecting portion are connected, and the one end that first connecting portion were kept away from in the transition portion is crooked extremely the side of well installation department with the one end of second connecting portion is connected, and the one end that well installation department was kept away from in the second connecting portion stretches the side of right side installation department and welds with right installation department.

Preferably, the wiring board and the mounting board are arranged vertically, the mounting board is connected with the wiring board through a bending part, the width of the bending part is smaller than that of the mounting board and the wiring board, and grooves are formed in two sides of the bending part respectively.

Preferably, the mutual inductor includes coil skeleton, primary winding sets up on coil skeleton, still is equipped with iron core subassembly and secondary coil on the coil skeleton, and iron core subassembly includes the card that relative setting from top to bottom to and set up a plurality of magnetic conduction pieces between two cards, coil skeleton sets up at the middle part of a plurality of magnetic conduction pieces, is equipped with the conducting rod on coil skeleton, primary winding and secondary coil are respectively around on coil skeleton.

Preferably, the flexible connection is a flexible copper stranded wire.

Preferably, a primary coil tape and a secondary coil tape are respectively provided on the outer sides of the primary coil and the secondary coil.

The electronic overload relay is welded between the wiring bar and the primary coil of the mutual inductor through the flexible connection, and the flexible connection has the characteristic of flexibility and can be bent under the action of external force, so that the connection position is not damaged by the external force, and the reliability of connection between the wiring bar and the primary coil is effectively improved.

Drawings

FIG. 1 is a schematic diagram of the mating of the instrument transformer, the terminal block and the flexible connection of the present invention;

FIG. 2 is a view of the utility model from the right side of FIG. 1;

FIG. 3 is a schematic diagram of the construction of the instrument transformer of the present invention;

FIG. 4 is a schematic diagram of the construction of the terminal block of the present invention;

fig. 5 is an exploded schematic view of the instrument transformer of the present invention.

Detailed Description

The following describes an electronic overload relay according to an embodiment of the present invention with reference to the embodiments shown in fig. 1 to 5. The electronic overload relay of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1-2, the electronic overload relay of the present invention includes a transformer 1 and a line bank 2, wherein the transformer 1 includes a housing and a primary coil 12 disposed on the housing, an outlet terminal 3 of the primary coil 12 extends to one side of the line bank 2, the outlet terminal 3 of the primary coil 12 is connected to the line bank 2 through a flexible connection 4, and the flexible connection 4 is welded to the outlet terminal 3 of the primary coil 12 and the line bank 2, respectively.

According to the electronic overload relay, the flexible connection 4 is welded between the wiring bar 2 and the primary coil 12 of the mutual inductor 1, and the flexible connection 4 has the flexible characteristic and can be bent under the action of external force, so that the connection position is not damaged by the external force, and the reliability of connection between the wiring bar 2 and the primary coil 12 is effectively improved.

As shown in fig. 3, mutual-inductor 1 includes coil skeleton 10 to and set up iron core subassembly 11, primary winding 12 and secondary coil 13 on coil skeleton 10 respectively, wiring row 2 includes wiring board 21 and mounting panel 22, and wiring board 21 is used for connecting external conductor (not shown in the figure), is equipped with limit structure on the mounting panel 22, and wiring row 2 passes through limit structure and installs on coil skeleton 10, not only can assemble wiring row 2 and coil skeleton 10 of mutual-inductor 1 as an organic whole through limit structure, conveniently adorn in the relay together, and limit structure can also cooperate flexible connection 4, can reduce the external force that flexible connection 4 received, guarantee the reliability of solder joint on the flexible connection 4. In addition, the space above the primary coil 12 can be effectively utilized, and the device has the characteristics of compactness and small volume.

The limiting structure of this embodiment is the mounting hole 6 of setting on mounting panel 22, be equipped with installation boss 5 on coil skeleton 10, mounting hole 6 can overlap and be spacing mounting panel 22 and coil skeleton 10 on installation boss 5. Of course, the positions of the mounting holes 6 and the mounting bosses 5 can be interchanged, and the utility model also belongs to the protection scope of the utility model. Preferably, the wiring board 21 and the mounting board 22 are vertically arranged, the mounting board 22 is connected with the wiring board 21 through a bending portion 23, the width of the bending portion 23 is smaller than that of the mounting board 22 and the wiring board 21, and grooves 24 are respectively formed on two sides of the bending portion 23. The groove 24 can prevent the material at the bending position from being extruded to two sides when the wiring bar 2 is manufactured through a bending process, and further prevent other matching parts from forming interference.

As shown in fig. 4, be equipped with dodging hole 25 on the mounting panel 22 of terminal block 2, the leading-out terminal 3 of primary coil 12 passes dodging hole 25 from one side that mounting panel 22 is close to mutual-inductor 1 to reach the one side that mounting panel 22 kept away from mutual-inductor 1, the leading-out terminal 3 of primary coil 12 and mounting panel 22 respectively with flexible connection 4 welding. The avoidance hole 25 avoids the wire outlet end 3 of the primary coil 12, so that the wire outlet end 3 of the primary coil 12 can be positioned on one side far away from the coil framework 10 instead of being positioned between the wiring bar 2 and the mutual inductor 1, and the welding difficulty can be reduced.

Specifically, the mounting panel 22 is U type structure, and the mounting panel 22 includes right installation department 26 and left installation department 28 to and connect the well installation department 27 between right installation department 26 and left installation department 28 one end, be equipped with on well installation department 27 with the spacing mounting hole 6 of mutual-inductor 1, enclose into the hole 25 of dodging of U type between right installation department 26, left installation department 28 and well installation department 27.

Further, the outlet end 3 of the primary coil 12 is disposed perpendicular to the mounting plate 22, the width D1 of the left mounting portion 28 is smaller than the width D2 of the right mounting portion 26, and the left mounting portion 28 can be bent toward a side close to the right mounting portion 26. Through the design of the width D1 of the left mounting part 28 being smaller than the width D2 of the right mounting part 26, the left mounting part 28 can be bent towards one side close to the right mounting part 26 before assembly, the lead-out end of the primary coil 12 can be conveniently and directly wound on the left mounting part 28 for soldering, and if the width D1 of the left mounting part 28 is large, the bending difficulty is high, and meanwhile, the risk of breakage is caused. Furthermore, the outlet end 3 of the primary coil 12 is avoided by the left mounting portion 28, and the center line of the avoiding hole 25 is located on the side of the mounting plate 22 close to the center line of the right mounting portion 26. The width of the left mounting part 28 is smaller than that of the right mounting part 26 so as to avoid the leading-out terminal 3 of the primary coil 12, the leading-out terminal 3 of the primary coil 12 does not need to be bent and can vertically and directly penetrate through the avoiding hole 25, and the assembling difficulty can be further reduced.

As shown in fig. 1-2, the flexible connection 4 of the present embodiment is a flexible copper stranded wire, the flexible connection 4 is in an L-shaped structure, and includes a first connection portion 41 and a second connection portion 42 that are vertically disposed, and a transition portion 43 connected between the first connection portion 41 and the second connection portion 42, the second connection portion 42 and the transition portion 43 are disposed on one side of the outlet end 3 of the primary coil 12, and the first connection portion 41 and the second connection portion 42 are respectively welded to the outlet end 3 of the primary coil 12 and the mounting plate 22.

Specifically, leading-out terminal 3 and well installation department 27 interval of primary coil 12 sets up, one side welding that first connecting portion 41 and leading-out terminal 3 of primary coil 12 are close to left installation department 28 forms first welding point 71 between leading-out terminal 3 of first connecting portion 41 and primary coil 12, the one end of transition portion 43 with first connecting portion 41 is connected, and the one end that first connecting portion 41 was kept away from to transition portion 43 is crooked extremely the side of well installation department 27 with the one end of second connecting portion 42 is connected, and the one end that second connecting portion 42 kept away from well installation department 27 stretches the side of right side installation department 26 and welds with right installation department 26, forms second welding point 72 between second connecting portion 42 and right installation department 26. It is understood that the flexible connection 4 is a flexible part, and the L shape is only one shape, and may be a plurality of irregular shapes, which is not limited herein.

As shown in fig. 5, the core assembly 11 of the present embodiment includes two opposite cards 14 and two magnetic conductive sheets 15 disposed between the two cards 14, the coil bobbin 10 is disposed in the middle of the magnetic conductive sheets 15, the conductive rod 16 is disposed on the coil bobbin 10, the primary coil 12 and the secondary coil 13 are respectively wound on the coil bobbin 10, and the primary coil 12 adhesive tape 120 and the secondary coil adhesive tape 130 are respectively disposed on the outer sides of the primary coil 12 and the secondary coil 13.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims

1. The utility model provides an electronic type overload relay, includes mutual-inductor (1) and terminal row (2), mutual-inductor (1) includes the casing and sets up primary coil (12) on the casing, its characterized in that: the leading-out terminal (3) of primary coil (12) are stretched one side of line bank (2), link to each other through flexible coupling (4) between leading-out terminal (3) of primary coil (12) and line bank (2), line bank (2) are equipped with limit structure, and line bank (2) pass through limit structure and install on mutual-inductor (1).

2. The electronic overload relay according to claim 1, wherein: mutual-inductor (1) includes coil skeleton (10), be equipped with installation base (5) on coil skeleton (10), limit structure is including setting up mounting hole (6) on line bank (2), and mounting hole (6) can overlap mounting panel (22) spacing with coil skeleton (10) on installation base (5).

3. The electronic overload relay according to claim 1, wherein: wiring row (2) are including wiring board (21) and mounting panel (22), and wiring board (21) are used for connecting external conductor, and mounting panel (22) are equipped with dodge hole (25), leading-out terminal (3) of primary coil (12) pass dodge hole (25) and stretch to one side that mutual-inductor (1) was kept away from in mounting panel (22), leading-out terminal (3) and mounting panel (22) of primary coil (12) weld with flexible coupling (4) respectively.

4. The electronic overload relay according to claim 3, wherein: mounting panel (22) are U type structure, and mounting panel (22) include right installation department (26) and left installation department (28) to and connect well installation department (27) between right installation department (26) and left installation department (28) one end, enclose into the hole of dodging (25) of U type between right installation department (26), left installation department (28) and well installation department (27).

5. The electronic overload relay according to claim 4, wherein: width D1 of left side installation department (28) is less than width D2 of right installation department (26), left side installation department (28) can be crooked to one side of right installation department (26).

6. The electronic overload relay according to claim 5, wherein: the flexible connection (4) comprises a first connecting portion (41) and a second connecting portion (42) and a transition portion (43) connected between the first connecting portion (41) and the second connecting portion (42), the second connecting portion (42) and the transition portion (43) are arranged on one side of a wire outlet end (3) of the primary coil (12), and the first connecting portion (41) and the second connecting portion (42) are respectively welded with the wire outlet end (3) of the primary coil (12) and the mounting plate (22).

7. The electronic overload relay according to claim 6, wherein: leading-out terminal (3) and well installation department (27) interval of primary coil (12) set up, one side welding that leading-out terminal (3) of first connecting portion (41) and primary coil (12) are close to left installation department (28), the one end of transition portion (43) with first connecting portion (41) are connected, and the one end bending extremely of first connecting portion (41) is kept away from in transition portion (43) the side of well installation department (27) with the one end of second connecting portion (42) is connected, and the one end of installation department (27) stretches during second connecting portion (42) are kept away from the side of right side installation department (26) and weld with right installation department (26).

8. The electronic overload relay according to claim 3, wherein: wiring board (21) and mounting panel (22) set up perpendicularly, connect through bending portion (23) between mounting panel (22) and wiring board (21), and the width of bending portion (23) is less than mounting panel (22) and wiring board (21), forms recess (24) respectively in the both sides of bending portion (23).

9. The electronic overload relay according to claim 1, wherein: mutual-inductor (1) includes coil skeleton (10), primary coil (12) set up on coil skeleton (10), still are equipped with iron core subassembly (11) and secondary coil (13) on coil skeleton (10), and iron core subassembly (11) are including card (14) of relative setting from top to bottom to and a plurality of magnetic conduction pieces (15) of setting between two cards (14), coil skeleton (10) set up the middle part in a plurality of magnetic conduction pieces (15), are equipped with conducting rod (16) on coil skeleton (10), primary coil (12) and secondary coil (13) are around respectively on coil skeleton (10).

10. The electronic overload relay according to claim 9, wherein: the flexible connection (4) is a flexible copper stranded wire, and a primary coil (12) adhesive tape (120) and a secondary coil adhesive tape (130) are respectively arranged on the outer sides of the primary coil (12) and the secondary coil (13).