CN113533810A

CN113533810A - Binding post, electric energy meter and electric energy meter subassembly

Info

Publication number: CN113533810A
Application number: CN202110482666.5A
Authority: CN
Inventors: 魏章波; 林国庆; 王锡赞; 洪少可
Original assignee: Ningbo Sanxing Medical and Electric Co Ltd
Current assignee: Ningbo Sanxing Electric Co Ltd; Ningbo Sanxing Medical and Electric Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-10-22

Abstract

The invention relates to a wiring terminal which comprises a shell, a metal piece, a contact piece and a locking screw, wherein a socket is positioned on the front side of the shell, and correspondingly, a threaded hole of the metal piece is formed in the front side wall of the metal piece and is communicated with a channel of the metal piece in the front-back direction; the wiring port is positioned at the lower part of the shell. The wiring terminal does not need to be disassembled from the electric energy meter and then assembled back again, and the operation is more convenient. The invention also discloses the electric energy meter applying the wiring terminal and the electric energy meter assembly applying the electric energy meter, which have the advantages of being convenient for wiring the wiring terminal on the front side of the electric energy meter and being convenient for taking down the wiring terminal without detaching the electric energy meter from the meter box.

Description

Binding post, electric energy meter and electric energy meter subassembly

Technical Field

The invention relates to the technical field of electric energy meters, in particular to a wiring terminal, an electric energy meter and an electric energy meter assembly.

Background

An electric energy meter is an instrument for measuring electric energy, also called watt-hour meter, fire meter, kilowatt-hour meter, and refers to instruments for measuring various electric quantities. The electric energy meter comprises a meter body, a circuit board arranged in the meter body and conductive parts respectively electrically connected with the circuit board and a wiring terminal. The wiring terminal comprises a shell, a metal piece, a contact piece and a locking screw.

For example, chinese utility model patent application No. CN201720795038.1 (with a publication number of CN206864651U) discloses "a connection terminal" for connecting with an electric wire, the connection terminal includes a wire holder, a wiring channel is provided on the wire holder, a clamping mechanism adapted to the wiring channel is provided on the wiring channel, the clamping mechanism can contact with the electric wire and can clamp the electric wire together with the bottom surface of the wiring channel, a protruding portion for contacting with the electric wire is provided on the bottom surface of the wiring channel and/or the clamping mechanism, when the electric wire is required to be wired, the thin electric wire can be placed on the protruding portion, so as to compensate for the height difference between electric wires with different thicknesses, so that the electric wires with different thicknesses can be clamped simultaneously by the terminal, the contact resistance is reduced, and the situation of breaking caused by burning loss or sliding of the electric wire out of the wiring channel can be avoided.

But has the following problems:

firstly, the above patent does not disclose the positional relationship of locking screw in binding post, general locking screw is located binding post's left side or right side, when needs operate external conductor (for example need to install external conductor or change old external conductor etc. to binding post), need operate binding post's left side or right side, and binding post's left side or right side receives the influence of the rest of electric energy meter or the influence of adjacent electric energy meter and the operating space of left and right directions is less, the instrument of being not convenient for like this is put into and the operator of being not convenient for observes, generally need pull down binding post from the electric energy meter, then unscrew locking screw again, operate external conductor again, link to each other binding post and the electrically conductive piece of electric energy meter again at last, it is troublesome to operate.

Secondly, generally drop from electrically conductive piece in order to prevent binding post, it is continuous to have connection structure between the two, and the process of generally taking off binding post is: clip binding post with instruments such as pliers, then extract binding post downwards, when the electric energy meter is installed at the table incasement, binding post is located the position that the electric energy meter leaned on, the inside operating space of upper and lower side of table case is less, the pliers is difficult to clip binding post, also be difficult to with the downward application of force of pliers, need pull down the electric energy meter from the table case this moment, instruments such as rethread pliers pull down binding post, install the electric energy meter again in the table case after that, the operation is more troublesome.

Therefore, the wiring terminal, the electric energy meter and the electric energy meter assembly can be further improved.

Disclosure of Invention

A first technical problem to be solved by the present invention is to provide a connection terminal facilitating front-side wiring according to the state of the art.

The second technical problem to be solved by the present invention is to provide an electric energy meter using the above-mentioned connection terminal according to the current state of the art, which is also convenient for connecting the connection terminal at the front side of the electric energy meter, and does not need to detach the connection terminal from the electric energy meter when operating the external connection lead.

The third technical problem to be solved by the present invention is to provide an electric energy meter assembly using the above electric energy meter according to the current state of the art, and the connection terminal can be conveniently taken down without detaching the electric energy meter from the meter box.

The technical scheme adopted by the invention for solving the first technical problem is as follows: a terminal comprises

The shell is provided with an accommodating cavity, an upper opening communicated with the accommodating cavity, a socket communicated with the accommodating cavity and a wiring port communicated with the accommodating cavity and used for inserting an external lead;

the metal piece is arranged in the shell and provided with a channel which is communicated up and down and a threaded hole which is arranged on the side wall of the metal piece and communicated with the channel;

the contact piece is arranged in the shell, one side of the contact piece is exposed out of the upper opening of the shell, and the other side of the contact piece is inserted into the channel of the metal piece;

the front end of the locking screw is exposed out of the socket of the shell, and the rear end of the locking screw is in threaded connection with the threaded hole of the metal piece;

the method is characterized in that:

the socket is positioned on the front side of the shell, and correspondingly, the threaded hole of the metal piece is arranged on the front side wall of the metal piece and is communicated with the front and the back of the channel of the metal piece;

the wiring port is located at the lower part of the shell.

The number of the contact pieces, the metal pieces and the locking screws can be multiple, and the number of the contact pieces, the metal pieces and the locking screws is the same and is at least two.

All the contact elements are arranged at intervals in the front-back direction;

all metal pieces are arranged at intervals in the left-right direction;

all the locking screws are arranged at intervals in the left-right direction.

The contact piece can have various structures, preferably, the contact piece at the foremost side is a first contact piece, all the contact pieces comprise an upper half part and a lower half part which are connected, the upper half part comprises a middle section extending left and right, a left elastic arm connected with the left side of the middle section and extending upwards, and a right elastic arm connected with the right side of the middle section and extending upwards, and the left elastic arm and the right elastic arm are arranged oppositely and are used for clamping an external contact pin.

The lower half may have various structures, and preferably, the lower half of the first contact member is a lower extension extending up and down and connected to the upper half, the lower extension being adapted to be inserted into the passage of the metal member.

For added strength, the lower extension is connected to the middle section of the upper half. The lower extension links to each other with the interlude, and the interlude is because the area is relatively great to the position area of being connected with the extension down is great, thereby intensity is great, also is convenient for produce.

The structure of the lower half part can be various, preferably, the contact element at the non-foremost side is a second contact element, the lower half part of the second contact element comprises a transverse part connected with the upper half part and a vertical part connected with the transverse part and extending downwards, and the vertical part is used for being inserted into the channel of the metal piece;

the shell is provided with a left half shell and a right half shell which are connected with each other left and right, the right half shell is divided into an upper shell and a lower shell which are isolated, a communicating groove which is communicated left and right is formed between the left half shell and the lower shell, and the sum of the number of the left half shell and the right half shell is equal to the number of all contact pieces;

the first contact is disposed in the upper housing;

the upper half portion of the second contact is located in the lower housing, the lateral portion of the second contact passes through the communication groove, and the vertical portion of the second contact is located in the left housing half.

The technical scheme adopted by the invention for solving the second technical problem is as follows: an electric energy meter that uses has foretell binding post, its characterized in that: the electric energy meter comprises a meter body, a circuit board arranged in the meter body and conductive pieces electrically connected with the circuit board and the wiring terminal respectively, wherein the conductive pieces are electrically connected with contact pieces of the wiring terminal.

The structure of the conductive member can be various, preferably, the conductive member is provided with at least two contact pins, the number of the contact pins corresponds to that of the contact members, and all the contact pins are arranged on the electric energy meter at intervals.

In order to facilitate guiding and positioning when the wiring terminal is installed, the side wall of the electric energy meter close to the contact pin is provided with a front guiding convex edge extending up and down and a rear guiding convex edge extending up and down, and the front guiding convex edge and the rear guiding convex edge enclose a guiding groove for guiding the wiring terminal to slide. Like this, during the installation, put into the position that leads protruding edge and back direction protruding edge with the position that binding post corresponds, then can push binding post fast to be connected with the quick alignment of electrically conductive piece.

The technical scheme adopted by the invention for solving the third technical problem is as follows: an electric energy meter component applied to the electric energy meter comprises a handle which is used for taking down a wiring terminal and extends forwards and backwards, wherein the wiring terminal and a conductive piece are in a state of being inserted in place, the front side of the upper part of the wiring terminal is provided with an insertion groove which extends backwards and is used for being matched with the rear end of the handle, and the lower groove wall of the insertion groove is used for abutting against the rear end of the handle in the up-down direction;

the rear end of the handle is wedge-shaped;

the front side of the electric energy meter is provided with a downward extending abutting part which is positioned in front of the wiring terminal and used for abutting against the middle part of the handle.

Compared with the prior art, the invention has the advantages that: be located the front side of casing through the socket, correspondingly, the screw hole setting of metalwork is in the preceding lateral wall of metalwork and with the passageway front and back intercommunication of metalwork, the wiring mouth is located the lower part of casing, be convenient for operate in binding post's front side like this, the front side instrument of being convenient for is put into and the operator of being convenient for observes, can directly unscrew locking screw, operates external conductor again, need not to install again after binding post pulls down from the electric energy meter again, it is more convenient to operate.

The electric energy meter with the wiring terminal is also convenient for wiring the wiring terminal at the front side of the electric energy meter, and the wiring terminal does not need to be detached from the electric energy meter when an external lead is operated.

Use the electric energy meter subassembly that has above-mentioned electric energy meter, including taking off binding post and the handle that extends around through the setting, the front side of electric energy meter has downwardly extending's butt portion, when needing to take off binding post, insert the inserting groove with the handle and offset with butt portion, then upwards act on the handle, the rear end of handle will downwards act on binding post, thereby take off binding post, just can conveniently take off binding post from the table case without tearing down the electric energy meter like this, also be convenient for operate in the front of electric energy meter, the positive operating space of electric energy meter is great relatively, it is more convenient to operate.

Drawings

Fig. 1 is a schematic perspective view of an electric energy meter according to an embodiment of the present invention;

FIG. 2 is a schematic view from another angle of FIG. 1;

fig. 3 is a schematic view of the terminal of fig. 1 with the housing removed;

FIG. 4 is a schematic view of an assembly of one of the contacts with an electric energy meter;

FIG. 5 is a schematic view of an assembly of two contacts with an electric energy meter;

FIG. 6 is an exploded view of an electric energy meter according to an embodiment of the present invention;

FIG. 7 is a schematic view from another angle of FIG. 6;

fig. 8 is a schematic perspective view of a terminal in an embodiment of the invention;

FIG. 9 is a schematic view from another angle of FIG. 8;

FIG. 10 is an exploded view of FIG. 8;

FIG. 11 is an exploded view of FIG. 9;

FIG. 12 is a perspective view of a second contact member in an embodiment of the present invention;

FIG. 13 is a schematic perspective view of a first contact member in an embodiment of the present invention;

fig. 14 is a sectional view in the up-down direction of the connection terminal in the embodiment of the invention;

fig. 15 is a cross-sectional view of the connection terminal in another up-down direction in the embodiment of the present invention;

fig. 16 is an exploded view of a wire terminal in an embodiment of the invention;

fig. 17 is a perspective view of a housing of the terminal in an embodiment of the invention;

fig. 18 is a schematic view of the assembly of the housing and two contacts of the terminal according to the embodiment of the present invention.

FIG. 19 is a schematic perspective view of an electrical energy meter assembly in an embodiment of the present invention;

fig. 20 is a schematic view from another angle of fig. 19.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Fig. 1 to 7 show a preferred embodiment of an electric energy meter with terminals according to the present invention.

An electric energy meter 200 with a connecting terminal 100 comprises a meter body 201, a circuit board (not shown in the figure) arranged in the meter body 201, and a conductive member 202 electrically connected with the circuit board and the connecting terminal 100 respectively.

The connecting terminal 100 includes a housing 1, a metal member 2, a contact member 3, and a locking screw 4

The housing 1 has a receiving cavity, an upper opening 11 communicating with the receiving cavity, a socket 12 communicating with the receiving cavity, and a wiring port 14 communicating with the receiving cavity for inserting an external wire. The socket 12 is located on the front side of the housing 1, and correspondingly, the threaded hole 22 of the metal piece 2 is arranged on the front side wall of the metal piece 2 and is in front-back communication with the channel 21 of the metal piece 2.

The metal fitting 2 is provided in the housing 1, and the metal fitting 2 has a passage 21 penetrating vertically and a screw hole 22 provided in a side wall of the metal fitting 2 and communicating with the passage 21.

The contact 3 is disposed in the housing 1, one side of the contact 3 is exposed to the upper opening 11 of the housing 1, and the other side of the contact 3 is inserted into the channel 21 of the metal member 2. In this embodiment, the number of the contact members 3, the metal members 2, and the locking screws 4 is the same, and there are two. In other embodiments, the number of contacts 3, metal pieces 2, and locking screws 4 may also be adjusted as desired. In this embodiment, all the contact members 3 are arranged at intervals in the front-rear direction, all the metal members 2 are arranged at intervals in the left-right direction, and all the locking screws 4 are arranged at intervals in the left-right direction. The contact 3 at the frontmost side is a first contact 3a, all the contacts 3 include an upper half portion 31 and a lower half portion 32 connected to each other, the upper half portion 31 includes a middle portion 311 extending left and right, a left elastic arm 312 connected to the left side of the middle portion 311 and extending upward, and a right elastic arm 313 connected to the right side of the middle portion 311 and extending upward, the left elastic arm 312 and the right elastic arm 313 being disposed opposite to each other and being used for clamping an external pin 202 a. In the present embodiment, referring to fig. 13, the lower half portion of the contact 3 (i.e., the first contact 3a) located at the foremost side is a lower extension 321 that extends up and down and is connected to the upper half portion 31, the lower extension 321 being for insertion into the passage 21 of the metal piece 2, the lower extension 321 being connected to the middle section 311 of the upper half portion 31; referring to fig. 12, the contact 3 at the non-frontmost side is a second contact 3b, and the lower half portion 32 of the second contact 3b includes a transverse portion 322 connected to the upper half portion 31, and a vertical portion 323 connected to the transverse portion 322 and extending downward, the vertical portion 323 being adapted to be inserted into the passage 21 of the metal member 2; the shell 1 is provided with a left half shell 1a and a right half shell 1b which are connected with each other left and right, the right half shell 1b is divided into an upper shell 1c and a lower shell 1d which are separated, a communicating groove 1e which is communicated left and right is arranged between the left half shell 1a and the lower shell 1d, and the sum of the number of the left half shell 1a and the right half shell 1b is equal to the number of all the contact pieces 3; the first contact 3a is provided in the upper case 1 c; the upper half portion 31 of the second contact 3b is located in the lower housing 1d, the lateral portion 322 of the second contact 3b passes through the communication groove 1e, and the vertical portion 323 of the second contact 3b is located in the left housing half 1 a.

The front end of the locking screw 4 is exposed out of the socket 12 of the housing 1, and the rear end 301 thereof is in threaded connection with the threaded hole 22 of the metal piece 2.

The conductive member 202 is electrically connected to the contact 3 of the connection terminal 100. Specifically, the conductive member 202 has two pins 202a, the number of the pins 202a corresponds to the number of the contacts 3, and all the pins 202a are arranged on the electric energy meter 200 at intervals in front and back; in other embodiments, the number of pins 202a may be adjusted as desired.

In order to facilitate guiding and positioning of the wire connecting terminal 100 when the wire connecting terminal 100 is mounted, the electric energy meter 200 has a front guiding convex edge 203 extending up and down and a rear guiding convex edge 204 extending up and down on a side wall near the pin 202a, and the front guiding convex edge 203 and the rear guiding convex edge 204 enclose a guiding groove for guiding the wire connecting terminal 100 to slide. Thus, during installation, the terminal 100 is placed in position between the front and

rear guide ledges

203 and 204, and the terminal 100 can then be quickly pushed into quick alignment with the conductor 202.

Fig. 18 and 19 show an electric energy meter assembly applied with an electric energy meter, which includes a handle 300 extending forward and backward for removing the connection terminal 100, wherein in a state where the connection terminal 100 is inserted into the conductive member 202, the front side of the upper portion of the connection terminal 100 has an insertion groove 13 extending backward for matching with the rear end 301 of the handle 300, and the lower groove wall 131 of the insertion groove 13 is used for abutting against the rear end 301 of the handle 300 in the up-down direction; to facilitate the placement of the handle 300 into the insertion slot 13, the rear end 301 of the handle 300 is wedge-shaped; the front side of the electric energy meter 200 has a downwardly extending abutment 205, the abutment 205 being located in front of the connection terminal 100 and being adapted to abut against the middle of the handle 300.

The electric energy meter assembly has the following use principle and working process.

When an external lead (not shown in the figure) needs to be operated, the locking screw 4 is unscrewed, because the locking screw 4 is positioned on the front side, namely on the front side of the electric energy meter 200, the operation is convenient to be carried out on the front side of the wiring terminal 100, the front side is convenient for tools to be placed in and convenient for an operator to observe, the locking screw 4 can be directly unscrewed, the external lead is operated again, the wiring terminal 100 does not need to be re-assembled after being detached from the electric energy meter 200, and the operation is more convenient.

When the wiring terminal 100 needs to be taken down, referring to fig. 18 and 19, the handle 300 is inserted into the insertion groove 13 and abutted against the abutting portion 205, and then acts on the front end of the handle 300 upwards, the abutting portion 205 serves as a fulcrum in the middle of the handle 300, and the rear end 301 of the handle 300 acts on the wiring terminal 100 downwards, so that the wiring terminal 100 is taken down, the wiring terminal 100 can be conveniently taken down without detaching the electric energy meter 200 from the meter box, the operation is convenient, and the operation is convenient on the front side of the electric energy meter 200.

Claims

1. A terminal comprises

The shell (1) is provided with an accommodating cavity, an upper opening (11) communicated with the accommodating cavity, a socket (12) communicated with the accommodating cavity and a wiring port (14) communicated with the accommodating cavity and used for inserting an external lead;

the metal piece (2) is arranged in the shell (1), and the metal piece (2) is provided with a channel (21) which is penetrated up and down and a threaded hole (22) which is arranged on the side wall of the metal piece (2) and communicated with the channel (21);

the contact piece (3) is arranged in the shell (1), one side of the contact piece (3) is exposed out of the upper opening (11) of the shell (1), and the other side of the contact piece (3) is inserted into the channel (21) of the metal piece (2);

the front end of the locking screw (4) is exposed out of the socket (12) of the shell (1), and the rear end (301) of the locking screw is in threaded connection with the threaded hole (22) of the metal piece (2);

the method is characterized in that:

the socket (12) is positioned on the front side of the shell (1), and correspondingly, the threaded hole (22) of the metal piece (2) is formed in the front side wall of the metal piece (2) and is communicated with the channel (21) of the metal piece (2) in the front-back direction;

the wiring port (14) is positioned at the lower part of the shell (1).

2. The connection terminal according to claim 1, wherein: the contact pieces (3), the metal pieces (2) and the locking screws (4) are the same in number and are at least two.

All the contact pieces (3) are arranged at intervals in the front-back direction;

all the metal pieces (2) are arranged at intervals in the left-right direction;

all the locking screws (4) are arranged at intervals in the left-right direction.

3. A terminal according to claim 1 or 2, wherein: the contact element (3) at the foremost side is a first contact element (3a), all the contact elements (3) comprise an upper half part (31) and a lower half part (32) which are connected, the upper half part (31) comprises a middle section (311) which extends left and right, a left elastic arm (312) which is connected with the left side of the middle section (311) and extends upwards, and a right elastic arm (313) which is connected with the right side of the middle section (311) and extends upwards, and the left elastic arm (312) and the right elastic arm (313) are oppositely arranged and are used for clamping an external contact pin (202 a).

4. A terminal according to claim 3, wherein: the lower half part of the first contact piece (3) is a lower extension (321) which extends up and down and is connected with the upper half part (31), and the lower extension (321) is used for being inserted into the channel (21) of the metal piece (2).

5. The connection terminal according to claim 4, wherein: the lower extension (321) is connected to the middle section (311) of the upper half (31).

6. A terminal according to claim 3, wherein: the contact piece (3) at the non-foremost side is a second contact piece (3b), the lower half part (32) of the second contact piece (3b) comprises a transverse part (322) connected with the upper half part (31), and a vertical part (323) connected with the transverse part (322) and extending downwards, and the vertical part (323) is used for being inserted into the channel (21) of the metal piece (2);

the shell (1) is provided with a left half shell (1a) and a right half shell (1b) which are connected with each other left and right, the right half shell (1b) is divided into an upper shell (1c) and a lower shell (1d) which are separated, a communicating groove (1e) which is communicated left and right is arranged between the left half shell (1a) and the lower shell (1d), and the sum of the number of the left half shell (1a) and the right half shell (1b) is equal to the number of all the contact pieces (3);

the first contact member (3a) is provided in the upper case (1 c);

the upper half part (31) of the second contact (3b) is located in the lower housing (1d), the lateral part (322) of the second contact (3b) passes through the communication groove (1e), and the vertical part (323) of the second contact (3b) is located in the left housing half (1 a).

7. An electric energy meter using the connection terminal as claimed in any one of claims 1 to 6, wherein: the electric energy meter comprises a meter body (201), a circuit board arranged in the meter body (201), and a conductive piece (202) respectively electrically connected with the circuit board and the wiring terminal (100), wherein the conductive piece (202) is electrically connected with a contact piece (3) of the wiring terminal (100).

8. The electric energy meter of claim 7, wherein: the conductive member (202) is provided with at least two contact pins (202a), the number of the contact pins (202a) corresponds to that of the contact members (3), and all the contact pins (202a) are arranged on the electric energy meter (200) at intervals in the front-back direction.

9. The electric energy meter of claim 8, wherein: the electric energy meter (200) is provided with a front guide convex edge (203) extending up and down and a rear guide convex edge (204) extending up and down on the side wall close to the contact pin (202a), and the front guide convex edge (203) and the rear guide convex edge (204) enclose a guide groove for guiding the connection terminal (100) to slide.

10. An electric energy meter assembly applied with the electric energy meter according to any one of claims 7-9, comprising a handle (300) extending forwards and backwards for removing the connection terminal (100), wherein in a state that the connection terminal (100) is inserted into the conductive member (202), the front side of the upper part of the connection terminal (100) is provided with a backward extending insertion groove (13) for matching with the rear end (301) of the handle (300), and the lower groove wall (131) of the insertion groove (13) is used for abutting against the rear end (301) of the handle (300) in the up-down direction;

the rear end (301) of the handle (300) is wedge-shaped;

the front side of the electric energy meter (200) is provided with a downward extending abutting part (205), and the abutting part (205) is located in front of the wiring terminal (100) and used for abutting against the middle part of the handle (300).