CN210429531U

CN210429531U - Make things convenient for current transformer of PCB installation

Info

Publication number: CN210429531U
Application number: CN201921488987.0U
Authority: CN
Inventors: 张�浩; 曹馨元; 肖顺利; 陈鸣言
Original assignee: Jiaxing Wisdom Electronic Tech Co ltd
Current assignee: Jiaxing Wisdom Electronic Tech Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-04-28
Anticipated expiration: 2029-09-09

Abstract

The utility model provides a make things convenient for current transformer of PCB installation, relates to the current transformer field, has solved traditional current transformer and has been connected because of being connected with PCB by the lead-out wire, and the lead-out wire stretches out to be difficult to accomodate in current transformer's part to and influence the installation of other components and parts. Make things convenient for current transformer of PCB installation includes the shell, secondary coil, the lead-out wire to and a copper terminal, the shell includes housing, apron, the housing includes first cavity and second cavity, be equipped with the stem in the first cavity, be equipped with the through-hole on the stem, a copper terminal passes through-hole and apron, be equipped with stop device in the second cavity, stop device includes the trough to and presss from both sides the groove, the free end of stitch passes in proper order press from both sides groove and trough and stretch out in the shell, the trough with still be equipped with an erection column on the terminal surface at the outside intercommunication place of housing.

Description

Make things convenient for current transformer of PCB installation

Technical Field

The utility model relates to a current transformer field, especially a make things convenient for current transformer of PCB installation.

Background

The current transformer principle is based on the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary winding of the current transformer has few turns and is connected in series in a circuit of current to be measured, so that all current of the circuit always flows through the current transformer, the secondary winding has more turns and is connected in series in a measuring instrument and a protection circuit, and the secondary circuit of the current transformer is always closed when the current transformer works, so that the impedance of a series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to short circuit.

Conventional PCB-mounted current transformers are typically electrically connected to the PCB by lead-out wires. However, since the lead wire partially extends out of the current transformer, after the current transformer is connected with the PCB through the lead wire, the part of the lead wire extending out of the current transformer is difficult to store, and even other components cannot be mounted due to the limitation of the mounting space of the electric meter.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a current transformer which can solve the above technical problems and is convenient for PCB installation, so as to solve the above problems.

A current transformer convenient for PCB installation comprises a shell, a secondary coil arranged in the shell, two pins electrically connected with the secondary coil, and a primary copper terminal passing through the shell and the secondary coil, wherein the shell comprises a cover shell and a cover plate used for packaging the secondary coil, the cover shell comprises a cylindrical first cavity and a rectangular second cavity communicated with the first cavity, a core column extending towards the cover plate is arranged in the first cavity, a through hole is formed in the core column, the primary copper terminal passes through the through hole and the cover plate, one end of the primary copper terminal is connected with a voltage line, a limiting device is arranged in the second cavity, the limiting device comprises two wiring grooves communicated with the outside of the cover shell, and the two clamping grooves are connected with the wiring grooves and are positioned in the second chamber, the free ends of the pins sequentially penetrate through the clamping grooves and the wiring grooves and extend out of the shell, and the wiring grooves are communicated with the outside of the shell and are also provided with an installation column on the end face.

Further, the housing is made of plastic and is of an integrally formed structure.

Further, the first chamber and the second chamber are communicated to form a channel, and an included angle α between two side walls of the channel and the center of a circle where the first chamber is located is 20 degrees.

Furthermore, the inner wall of the first chamber is provided with a protruding part extending towards the inside of the first chamber, and the cover plate is placed on the protruding part.

Furthermore, a bump is arranged on the cover plate and matched with the second chamber, and the bump is attached to the wiring groove.

Furthermore, two the free end of stitch is parallel to be stretched out in the shell, every the stitch all with the erection column is parallel, the erection column with two the stitch be triangular distribution.

Further, the through hole is any one of a cross shape, a straight shape or a circular shape.

Compared with the prior art, the utility model provides a make things convenient for current transformer of PCB installation is through setting housing integrated into one piece to the concatenation of a columniform first cavity and a long cubic second cavity for this current transformer's structure is reasonable more regular and compact be convenient for the installation more, and the rethread is drawn forth stitch along double-layered groove and trough at the structure of the inside double-layered groove that sets up of second cavity and trough, has not only make full use of the inner space of housing, adopt the stitch with the combination of erection column has promoted the stability that current transformer installed on PCB, prevents to be difficult to receive the whole because of the lead-out wire extension that the tradition caused of using the lead-out wire, influences the problem of other components and parts installations.

Drawings

Embodiments of the present invention are described below with reference to the accompanying drawings, in which:

fig. 1 is the utility model discloses a make things convenient for current transformer's of PCB installation structural schematic.

Fig. 2 is a schematic structural diagram of a shell, pins and mounting posts of the current transformer convenient for PCB mounting in fig. 1.

Fig. 3 is a schematic structural diagram of a housing, a secondary coil, pins and mounting posts of the current transformer facilitating PCB mounting in fig. 1.

Fig. 4 is a schematic structural diagram of the cover plate in fig. 2.

Detailed Description

The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

Please refer to fig. 1 to fig. 3, which are schematic structural diagrams of a current transformer facilitating PCB installation according to the present invention. Make things convenient for current transformer of PCB installation includes a shell 11, a secondary coil 12 that sets up in the shell 11 inside, two with secondary coil 12 electric connection's stitch 13, and one pass shell 11 with the inside primary copper terminal 14 of secondary coil 12. The current transformer facilitating PCB mounting further includes other functional modules, such as electrical components, mounting components, etc., which are well known to those skilled in the art, and therefore, will not be described herein again.

The housing 11 includes a case 111, a cover plate 112 for enclosing the secondary coil 12. First, the function of the housing 11 should be described, the housing 11 is generally made of an insulating material such as plastic, and the housing 11 is used for mounting the primary copper terminal 14, the primary copper terminal 12, and other functional modules. In this embodiment, the housing 11 is an integrally formed plastic structure, and the integrally formed structure enables the housing 11 to have strong structural stability. The cover plate 112 has a sealing function and its structure should match the structure of the housing 111.

Referring to fig. 1 to 4, the housing 111 includes a first chamber 116 and a second chamber 117 communicating with the first chamber 116, the first chamber 116 is a cylindrical structure, the second chamber 117 is a rectangular parallelepiped structure, the cylindrical and rectangular parallelepiped structures make the housing 111 more regular and compact in structure and have aesthetic properties, the first chamber 116 and the second chamber 117 communicate to form a channel 118, an included angle α between two sidewalls of the channel 118 and a center of a circle where the first chamber 116 is located is 20 degrees, the included angle α is 20 degrees, which facilitates installation of other functional modules, saves an internal space of the housing 111, makes full use of the internal space of the housing 111, improves space utilization, and has a reasonable structure, a stem 119 extending toward a cover plate is provided in the first chamber 116, a through hole 120 is provided in the first chamber 119, the primary copper terminal 12 passes through the through hole 120 and the cover plate 112, one end of the primary copper terminal 12 is connected to a through-wire-plug-connecting device 12, a through-a protrusion 11516 is provided in the first chamber 116, the through-hole 120 is a cross-shaped, a through-shaped protrusion 1151, a protrusion 1152 is provided in the first chamber 116, and a protrusion 1152 is provided in the housing 112, and a protrusion 1151 is provided in order to prevent a protrusion, and a protrusion 1152 is provided in the housing 112, and a protrusion 1151 is provided in the housing 112, and a protrusion 1152, and a protrusion 1152, and a protrusion, which is provided in the housing 112, and is provided to connect a wire groove, and a wire groove 115, and a wire groove, and a protrusion 1151, and a protrusion 1152, which is provided in which is provided to connect a protrusion, and a protrusion 1151, and a protrusion 1152, and is provided in which is provided to connect a protrusion, and is provided to connect a wire groove, and is provided to connect a protrusion, and is provided to connect a wire groove 115, and is provided to connect a protrusion, and is provided to connect a wire groove, and is provided to connect a wire groove, and is provided.

An installation column 17 is arranged on the end surface of the wiring groove 1151 communicated with the outside of the housing 111. The free ends of the two pins 13 protrude parallel to the housing 11. Each of the pins 13 is parallel to the mounting post 17. The mounting posts 17 and the two pins 13 are distributed in a triangular mode. The mounting posts 17 are used for positioning, and are matched with corresponding hole and slot structures on a PCB (not shown), and the mounting posts 17 and the tail ends of the two pins 13 are flush, so that a customer can conveniently install the current transformer. The triangular distribution structure can improve the stability of installation. The bumps 1122 on the cover plate 112 press the pins 13 into the wiring grooves 1151, so that the pins 13 are prevented from loosening, and the pins 13 are protected to a certain extent.

In this embodiment, the secondary coil 12 is installed inside the housing 111, the primary copper terminal 12 is installed again, the interior of the housing 111 is filled with glue, the cover plate 112 is covered after the glue is filled, and after the glue is dried and cured inside, all the components inside can be fastened together.

Compared with the prior art, the utility model provides a make things convenient for current transformer of PCB installation is through setting housing 111 integrated into one piece to the concatenation of a columniform first cavity 116 and a rectangular bodily form's second cavity 117, make this current transformer's structure more reasonable regular and compact be convenient for install more, the rethread is at the inside double-layered groove 1152 and the structure of trough 1151 that sets up of second cavity 117, draw forth stitch 13 along double-layered groove 1152 and trough 1151, not only make full use of housing 111's inner space, adopt stitch 13 with erection column 17's combination has promoted current transformer and has installed the stability on PCB, prevent to use the lead-out wire extension that the lead-out wire caused because of the tradition to be difficult to receive and put in order, influence the problem of other components and parts installation.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. The utility model provides a make things convenient for current transformer of PCB installation which characterized in that: the current transformer convenient for PCB installation comprises a shell, a secondary coil arranged inside the shell, two pins electrically connected with the secondary coil, and a primary copper terminal passing through the shell and the secondary coil, wherein the shell comprises a cover shell and a cover plate used for packaging the secondary coil, the cover shell comprises a cylindrical first cavity and a rectangular second cavity communicated with the first cavity, a core column extending towards the cover plate is arranged in the first cavity, a through hole is formed in the core column, the primary copper terminal passes through the through hole and the cover plate, one end of the primary copper terminal is connected with a voltage wire, a limiting device is arranged in the second cavity, the limiting device comprises two wiring grooves communicated with the outside of the cover shell, and two clamping grooves connected with the wiring grooves and positioned in the second cavity, the free end of the pin sequentially penetrates through the clamping groove and the wiring groove and extends out of the shell, and an installation column is further arranged on the end face where the wiring groove is communicated with the outside of the housing.

2. The PCB mounted facilitated current transformer of claim 1, wherein: the shell is made of plastic and is of an integrally formed structure.

3. The current transformer for facilitating PCB mounting as recited in claim 1, wherein said first and second chambers are connected to form a channel, and an angle α between two sidewalls of said channel and a center of a circle of said first chamber is 20 degrees.

4. The PCB mounted facilitated current transformer of claim 1, wherein: the inner wall of the first cavity is provided with a protruding part extending towards the inside of the first cavity, and the cover plate is placed on the protruding part.

5. The PCB mounted facilitated current transformer of claim 1, wherein: and a lug is arranged on the cover plate and matched with the second chamber, and the lug is attached to the wiring groove.

6. The PCB mounted facilitated current transformer of claim 1, wherein: the free ends of the two pins extend out of the shell in parallel, each pin is parallel to the mounting column, and the mounting columns and the two pins are distributed in a triangular mode.

7. The PCB mounted facilitated current transformer of claim 1, wherein: the through hole is any one of a cross shape, a straight line shape or a round shape.