Short circuit device

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a short-circuit device, and in a short-circuit mechanism of the short-circuit device, short-circuit pieces are driven by a short-circuit mechanism shell to move synchronously; when the short-circuit mechanism is in the short-circuit position, the first short-circuit part and the second short-circuit part of each short-circuit piece abut against and are electrically connected with the first matching part and the second matching part of the corresponding short-circuit matching pair respectively. The short circuit device is simple in structure and easy and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus field, concretely relates to a short circuit device. BACKGROUND

[0002] The existing electric meter box needs to be powered off after the electric circuit of the electric energy meter is powered off when replacing the electric energy meter, and is powered on again after replacing the electric energy meter, which affects the continuity of power supply. UTILITY MODEL CONTENTS

[0003] The utility model discloses a short circuit device which is simple in structure and easy to operate.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A short circuit device includes a short circuit mechanism and a fixed short circuit cooperation mechanism; the short circuit mechanism includes a short circuit mechanism shell and a short circuit piece arranged on the short circuit mechanism shell, the short circuit piece includes a first short circuit part and a second short circuit part connected in series with each other, and each short circuit piece moves synchronously under the driving of the short circuit mechanism shell; the short circuit cooperation mechanism includes a short circuit cooperation pair arranged one-to-one with the short circuit piece, and the short circuit cooperation pair includes a first cooperation part and a second cooperation part arranged one-to-one; in the short circuit cooperation pair, the first cooperation part and the second cooperation part are used for being electrically connected with an incoming line conductor and an outgoing line conductor respectively, and the incoming line conductor and the outgoing line conductor are connected to the incoming line terminal and the outgoing line terminal of the same phase of the electric energy meter respectively.

[0006] When the short circuit mechanism is in the short circuit position, the first short circuit part and the second short circuit part of each short circuit piece are respectively abutted and electrically connected with the first cooperation part and the second cooperation part of the corresponding short circuit cooperation pair.

[0007] Further, the first short circuit part is a first short circuit pin, one end of the first short circuit pin is located in the short circuit mechanism shell, and the other end is abutted and electrically connected with the first cooperation part; the second short circuit part is a second short circuit pin, one end of the second short circuit pin is located in the short circuit mechanism shell, and the other end is abutted and electrically connected with the second cooperation part.

[0008] Further, the short circuit piece is movably arranged relative to the short circuit mechanism shell; the short circuit mechanism further includes a spring; when the short circuit mechanism is in the short circuit position, the spring acts on the short circuit piece, so that the first short circuit part is pressed against the corresponding first cooperation part and the second short circuit part is pressed against the corresponding second cooperation part.

[0009] Further, the short circuit piece further includes a bearing part, one end of the first short circuit part and the second short circuit part is fixedly connected with the bearing part respectively; the spring is used for cooperation with one end of the bearing part and cooperation with the other end of the short circuit mechanism shell.

[0010] Further, the short-circuit mechanism shell comprises a mounting structure matched with the short-circuit member one by one, the mounting structure comprises a third cavity, the bearing part is slidingly arranged in the third cavity, and a side wall of the third cavity is provided with a first insertion hole for the first short-circuit part to pass through and a second insertion hole for the second short-circuit part to pass through.

[0011] Further, the elastic member is a compression spring arranged between the side wall of the third cavity and the bearing part.

[0012] Further, the short-circuit member further comprises a short-circuit cross beam, the first short-circuit part, the short-circuit cross beam and the second short-circuit part are sequentially connected, the first short-circuit part and the second short-circuit part are fixedly connected with the short-circuit cross beam respectively and are connected in series through the short-circuit cross beam, and the short-circuit cross beam serves as the bearing part.

[0013] Further, the short-circuit member is of an integral structure and has a whole U-shaped structure.

[0014] Further, the first matching part is borne by an incoming line connection terminal for being electrically connected with an incoming line terminal of the electric energy meter and fixedly arranged on an insertion base of the electric energy meter; and the second matching part is borne by an outgoing line connection terminal for being electrically connected with an outgoing line terminal of the electric energy meter and fixedly arranged on the insertion base of the electric energy meter.

[0015] Further, when the short-circuit mechanism is located at the short-circuit position, the short-circuit mechanism is further used for limiting cooperation with the insertion base of the electric energy meter and the short-circuit cooperation mechanism, so as to keep the short-circuit mechanism at the short-circuit position.

[0016] Further, the short-circuit mechanism further comprises two groups of buckle members, the buckle member comprises a first buckle leg;

[0017] The short-circuit mechanism shell further comprises two short-circuit mechanism buckle holes respectively arranged at two ends of the short-circuit mechanism shell;

[0018] When the short-circuit mechanism is located at the short-circuit position, the short-circuit mechanism shell is used for being inserted between the two oppositely arranged base side walls of the insertion base, the two short-circuit mechanism buckle holes are used for being correspondingly matched with the base buckle holes arranged on the pair of side walls of the insertion base respectively, and the first buckle leg is used for being inserted into the short-circuit mechanism buckle hole and the base buckle hole corresponding to each other.

[0019] Further, the buckle member further comprises a buckle beam and a second buckle leg, the buckle beam is connected with the first buckle leg and the second buckle leg at two ends respectively through bending, and the first buckle leg and the second buckle leg are oppositely and spacedly arranged.

[0020] When the short-circuit mechanism is located at the short-circuit position, the buckle beams of the two groups of buckle members are arranged at two sides of the two base side walls of the insertion base respectively, the second buckle leg and the short-circuit cooperation mechanism are located at two sides of the short-circuit mechanism shell respectively, and the second buckle leg is arranged at one side of the short-circuit mechanism shell and the corresponding base side wall.

[0021] Further, the short-circuit mechanism shell is provided with a buckle receiving hole for accommodating a buckle.

[0022] The short-circuit device has simple structure and convenient operation, and power supply continuity is ensured during replacement of the electric energy meter.

[0023] In addition, the elastic member ensures reliable contact force between the first short-circuit part and the first matching part and between the second short-circuit part and the second matching part, and ensures reliable conduction of the short-circuit member and the corresponding short-circuit matching pair.

[0024] In addition, the short-circuit mechanism shell is limited and matched with the plug-in base, so that the short-circuit mechanism can be kept in the short-circuit position without manual operation of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the short-circuit device of the first embodiment of the utility model in a first perspective view;

[0026] Figure 2 is a structural schematic view of the short-circuit device of the first embodiment of the utility model in a second perspective view;

[0027] Figure 3 is a structural schematic view of the short-circuit mechanism of the utility model, wherein subgraph (31) shows the short-circuit mechanism in one perspective view, and subgraph (32) shows the short-circuit mechanism in another perspective view;

[0028] Figure 4 is a structural schematic view of the short-circuit member of the short-circuit device of the first embodiment of the utility model;

[0029] Figure 5 is a structural schematic view of the short-circuit mechanism shell of the short-circuit device of the first embodiment of the utility model;

[0030] Figure 6 is a structural schematic view of the short-circuit device of the first embodiment of the utility model in a third perspective view;

[0031] Figure 7 is a structural schematic view of the short-circuit device of the second embodiment of the utility model in a first perspective view;

[0032] Figure 8 is a structural schematic view of the short-circuit device of the second embodiment of the utility model in a fourth perspective view;

[0033] Figure 9 is a structural schematic view of the short-circuit device of the second embodiment of the utility model in a fifth perspective view;

[0034] Figure 10is a structure schematic view of the short circuit mechanism of the short circuit device of the second embodiment of the utility model, the buckle member is in the separated state with the short circuit mechanism shell;

[0035] Figure 11 is a structure schematic view of the short circuit mechanism of the short circuit device of the second embodiment of the utility model, the buckle member is in the separated state with the short circuit mechanism shell;

[0036] Figure 12 is another structure schematic view of the short circuit device of the second embodiment of the utility model under the first visual angle;

[0037] Figure 13 is a structure schematic view of the short circuit device of the second embodiment of the utility model under the sixth visual angle;

[0038] Figure 14 is a structure schematic view of the short circuit mechanism and the base under the assembled state of the second embodiment of the utility model, the buckle member limits the short circuit mechanism shell and the base together.

[0039] Explanation of reference signs

[0040] Short circuit mechanism 1, short circuit mechanism shell 2, short circuit member 3, series connection conductor first arm 4, series connection conductor second arm 5, series connection conductor middle section 6, series connection conductor 7, first short circuit part 8, second short circuit part 9, first cavity 10, second cavity 11, first jack 12, second jack 13, communication cavity 14, mounting structure 15, first matching part 16, second matching part 17, incoming line connection terminal 18, outgoing line connection terminal 19, elastic member 20, buckle storage hole 21, buckle member 22, third cavity 23, short circuit crossbeam 24, first copper bar 25, second copper bar 26, buckle beam 27, first buckle leg 28, second buckle leg 29, short circuit mechanism buckle hole 30, plug-in base 60, base side wall 61, base buckle hole 62. Specific implementation

[0041] The following embodiment given in conjunction with the drawings further illustrates the specific implementation of the short circuit device of the utility model.

[0042] As Figure 2 , 6The utility model discloses a short circuit device as shown in the figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 13, and the utility model discloses a short circuit device, it includes short circuit mechanism 1, short circuit mechanism 1 includes short circuit mechanism shell 2 and sets up short circuit piece 3 on short circuit mechanism shell 2, each short circuit piece 3 is driven under short circuit mechanism shell 2 and synchronously moves, and short circuit piece 3 includes the first short circuit part 8 and the second short circuit part 9 in series with each other. The short circuit device of the utility model, when needing to replace the electric energy meter (not shown in the drawing) borne on the plug-in base 60, each short circuit piece 3 can respectively electrically connect to the incoming line conductor and outgoing line conductor of the same phase of electric energy meter short circuit, thereby not needing to power off in the process of replacing electric energy meter, guarantee the continuity of power supply. Further, the incoming line conductor and the incoming line terminal of electric energy meter one-to-one plug-in electric connection, and the incoming line conductor preferably includes the incoming line connection terminal 18 for being fixedly arranged on the plug-in base 60 and being used for one-to-one plug-in electric connection with the incoming line terminal of electric energy meter, and / or, the outgoing line conductor and the outgoing line terminal of electric energy meter one-to-one plug-in electric connection, and the outgoing line conductor preferably includes the outgoing line connection terminal 19 for being fixedly arranged on the plug-in base 60 and being used for one-to-one plug-in electric connection with the outgoing line terminal of electric energy meter.

[0043] As shown in the figures Figures 1-6 It is the first embodiment of the short circuit device of the utility model.

[0044] As shown in the figures Figures 1-6As shown, the short-circuit device of the first embodiment comprises a short-circuit mechanism 1 and a fixed short-circuit matching mechanism, which comprises a short-circuit matching pair matched with the short-circuit piece 3 one-to-one, and the short-circuit matching pair comprises a first matching part 16 and a second matching part 17 arranged one-to-one. In the short-circuit matching pair, the first matching part 16 and the second matching part 17 are respectively used to be electrically connected with the incoming line conductor and the outgoing line conductor one-to-one, and the incoming line conductor and the outgoing line conductor are respectively connected to the incoming line terminal and the outgoing line terminal of the same phase of the electric energy meter; that is, in the short-circuit matching pair, the first matching part 16 is used to be electrically connected with the incoming line conductor one-to-one, and the second matching part 17 is used to be electrically connected with the outgoing line conductor one-to-one, the incoming line conductor is electrically connected with the incoming line terminal of a certain phase of the electric energy meter one-to-one, and the outgoing line terminal is electrically connected with the outgoing line terminal of the phase of the electric energy meter one-to-one. The short-circuit piece 3 is arranged in the short-circuit mechanism shell 2; in the first short-circuit part 8 and the first matching part 16, one is a female plug-in terminal and the other is a male plug-in terminal; in the second short-circuit part 9 and the second matching part 17, one is a female plug-in terminal and the other is a male plug-in terminal; the first matching part 16 and the second matching part 17 are both male plug-in terminals. When the short-circuit mechanism 1 is in the short-circuit position, the first short-circuit part 8 and the second short-circuit part 9 of each short-circuit piece 3 are respectively plugged and electrically connected with the first matching part 16 and the second matching part 17 of the corresponding short-circuit matching pair; that is, when the short-circuit mechanism 1 is in the short-circuit position, in the corresponding short-circuit piece 3 and the short-circuit matching pair, the first short-circuit part 18 is plugged and electrically connected with the first matching part 16, and the second short-circuit part 9 is plugged and electrically connected with the second matching part 17. In this embodiment, the first short-circuit part 8 and the second short-circuit part 9 are both female plug-in terminals, and the first matching part 16 and the second matching part 17 are both male plug-in terminals.

[0045] The short-circuit device of the first embodiment has a simple structure, the short-circuit piece 3 is arranged in the short-circuit mechanism shell 2 to improve the safety when the short-circuit mechanism 1 is operated, and the first short-circuit part 8 is plugged and electrically connected with the first matching part 16 and the second short-circuit part 9 is plugged and electrically connected with the second matching part 17, so that the short-circuit mechanism 1 can be kept in the short-circuit position without external force.

[0046] As shown in FIGS. 1, 6, the short-circuit piece 3 further comprises a series conductor 7, and the two ends of the series conductor 7 are respectively connected with and electrically connected with the first short-circuit part 8 and the second short-circuit part 9.

[0047] As shown in FIGS. 1, 6, the short-circuit piece 3 further comprises a series conductor 7, and the two ends of the series conductor 7 are respectively connected with and electrically connected with the first short-circuit part 8 and the second short-circuit part 9. Figures 1-4 As shown in FIGS. 1, 6, the short-circuit piece 3 further comprises a series conductor 7, and the two ends of the series conductor 7 are respectively connected with and electrically connected with the first short-circuit part 8 and the second short-circuit part 9. As shown in FIGS. 1, 6, the short-circuit piece 3 further comprises a series conductor 7, and the two ends of the series conductor 7 are respectively connected with and electrically connected with the first short-circuit part 8 and the second short-circuit part 9.

[0048] The second implementation of the series conductor 7 is realized by a soft conductor or a hard conductor.

[0049] In the short circuit device of the first embodiment, the series conductor 7 preferably adopts the first implementation.

[0050] As shown in Figure 3 , 5 The short circuit mechanism shell 2 includes a mounting structure 15 matched with the short circuit piece 3 one by one, the mounting structure 15 includes a first cavity 10 in which the first short circuit part 8 is placed, a second cavity 11 in which the second short circuit part 9 is placed, and a communication cavity 14 through which the series conductor 7 passes, the communication cavity 14 is communicated with the first cavity 10 and the second cavity 11 at both ends respectively, and the side wall of the first cavity 10 is provided with a first insertion hole 12 corresponding to the first short circuit part 8 and through which the first matching part 16 passes, that is, the first matching part 16 is electrically connected with the corresponding first short circuit part 8 through the corresponding first insertion hole 12, and the side wall of the second cavity 11 is provided with a second insertion hole 13 corresponding to the second short circuit part 9 and through which the second matching part 17 passes, that is, the second matching part 17 is electrically connected with the corresponding second short circuit part 9 through the corresponding second insertion hole 13. The mounting structure 15 is simple in structure and facilitates the assembly of the short circuit piece 3. Further, the series conductor intermediate section 6 of the series conductor 7 is placed in the communication cavity 14, and the series conductor first arm 4 and the series conductor second arm 5 are respectively located in the first cavity 10 and the second cavity 11; the series conductor intermediate section 6 is preferably limited in cooperation with the side wall of the communication cavity 14 to prevent the short circuit piece 3 from moving along the insertion direction of the first short circuit part 8 and the first matching part 16 / the insertion direction of the second short circuit part 9 and the second matching part 17; a partition is provided between the first cavity 10 and the second cavity 11, and the series conductor first arm 4 and the series conductor second arm 5 are preferably respectively limited in cooperation with a pair of side walls of the partition to prevent the short circuit piece 3 from moving in the opposite direction of the first cavity 10 and the second cavity 11.

[0051] Further, the short circuit mechanism shell 2 includes two half shells arranged oppositely, and the two half shells are the same or different in structure, and the two half shells are arranged oppositely to form the mounting structure 15.

[0052] As shown in Figures 1-4As shown in Figures 6 and 7, the first shorting portion 8 and the second shorting portion 9 have the same structure, both being busbar clamp-type plug-in terminals. Each includes a first clamping piece, a connecting portion, and a second clamping piece. The first and second clamping pieces are arranged opposite each other and connected to both ends of the connecting portion. The middle portions of the first and second clamping pieces protrude towards each other, and the first and second clamping pieces form an X-shaped structure. Further, the connecting portion has a U-shaped structure, with its two ends connected to one end of the first and second clamping pieces, respectively. Further, the first shorting portion 8 and the second shorting portion 9 are both integral structures. Further, the busbar clamp-type plug-in terminal is made of a metal plate with good elasticity and conductivity.

[0053] like Figures 1-2 As shown in Figure 6, one end of the first mating part 16 is fixedly connected to the incoming line connection terminal 18, which is plugged into and electrically connected to the incoming line terminal of the energy meter, and the other end is plugged into and mated with the first shorting part 8; that is, one end of the first mating part 16 is directly or indirectly fixedly connected to the incoming line connection terminal 18, and the incoming line connection terminal 18 is plugged into and electrically connected to the incoming line terminal of the energy meter.

[0054] Specifically, the first mating part 16 is part of the first copper busbar 25. One end of the first copper busbar 25 is used to be fixedly connected and electrically connected to the incoming line connection terminal 18, and the other end is used to be plugged into and electrically connected to the incoming line terminal of the incoming line switch. The first copper busbar 25 has a simple structure and is easy to manufacture. It also satisfies three functions at the same time—that is, it provides the first mating part 16 and connects to the incoming line connection terminal 18 and the incoming line switch respectively, which helps to simplify the structure of related devices (such as the plug-in base 60).

[0055] like Figures 1-2 As shown in Figure 6, one end of the second mating part 17 is fixedly connected to the outgoing connection terminal 19, which is plugged into and electrically connected to the outgoing terminal of the energy meter, and the other end is plugged into and mated with the second shorting part 9; that is, one end of the second mating part 17 is directly or indirectly fixedly connected to the outgoing connection terminal 19, and the outgoing connection terminal 19 is plugged into and electrically connected to the outgoing terminal of the energy meter.

[0056] Specifically, the second mating part 17 is part of the second copper busbar 26. One end of the second copper busbar 26 is used for fixed connection and electrical connection with the outgoing connection terminal 19, and the other end is used for plug-in electrical connection with the incoming terminal of the outgoing switch. The second copper busbar 26 has a simple structure and is easy to manufacture. It also satisfies three functions at the same time—that is, it provides the second mating part 17 and connects to the outgoing connection terminal 19 and the outgoing switch respectively, which helps to simplify the structure of related devices (such as the plug-in base 60).

[0057] like Figures 1-3, 6, the shorting device is used for matching with the two-phase (i.e. P+N type) electric energy meter, i.e. the shorting device is used for short-circuiting the two-phase electric energy meter, the number of the shorting pieces 3 and the number of the shorting matching pairs are both 2. As shown in

[0058] In the shorting device, the shorting mechanism shell 2 is used for limiting cooperation with the plug-in base 60 when the shorting mechanism 1 is located at the shorting position, so as to keep the shorting mechanism 1 at the shorting position, and the reliability of cooperation between the shorting piece 3 and the corresponding shorting matching pair is improved. Further, the shorting mechanism shell 2 and the plug-in base 60 are cooperated by the prior art means, and the shorting mechanism shell 2 and the plug-in base 60 are released from the limiting cooperation when the shorting mechanism 1 is moved out of the shorting position.

[0059] In the shorting device, the number of the shorting pieces 3 and the number of the shorting matching pairs can be increased or decreased according to the needs. Figures 1-5 As shown in Figure 6 As shown in

[0060] As shown in Figures 7-13 The shorting device is a second embodiment of the utility model.

[0061] As shown in Figures 7-13 The shorting device of the second embodiment comprises a shorting structure 1 and a fixed shorting matching mechanism. The shorting matching mechanism comprises a shorting matching pair arranged one-to-one with the shorting piece 3, and the shorting matching pair comprises a first matching part 16 and a second matching part 17 arranged one-to-one. The first matching part 16 and the second matching part 17 are used for being electrically connected with the incoming line conductor and the outgoing line conductor respectively, and the incoming line conductor and the outgoing line conductor are connected to the incoming terminal and the outgoing terminal of the same phase of the electric energy meter respectively; that is, the first matching part 16 is used for being electrically connected with the incoming line conductor one-to-one, the second matching part 17 is used for being electrically connected with the outgoing line conductor one-to-one, the incoming line conductor is connected to the incoming terminal of the certain phase of the electric energy meter one-to-one, and the outgoing line conductor is used for being connected to the outgoing terminal of the phase of the electric energy meter one-to-one. When the shorting device 1 is at the shorting position, the first shorting part 8 of each shorting piece 3.

[0062] The shorting device of the second embodiment has simple structure and convenient operation.

[0063] As shown in Figures 7-13As shown, the first short-circuit part 8 is a first short-circuit pin, one end of which is located in the short-circuit mechanism shell 2 and the other end is in abutting electrical connection with the first matching part 16; the second short-circuit part 9 is a second short-circuit pin, one end of which is located in the short-circuit mechanism shell 2 and the other end is in abutting electrical connection with the second matching part 17.

[0064] As shown, Figures 7-13 the short-circuit piece 3 is movably arranged relative to the short-circuit mechanism shell 2; the short-circuit mechanism 1 further comprises an elastic piece 20; when the short-circuit mechanism 1 is in the short-circuit position, the elastic piece 20 acts on the short-circuit piece 3, so that the first short-circuit part 8 is pressed against the corresponding first matching part 16 and the second short-circuit part 9 is pressed against the corresponding second matching part 17.

[0065] As shown, Figures 7-13 the first kind of matching mode between the elastic piece 20 and the short-circuit piece 3 is as follows: the short-circuit piece 3 further comprises a bearing part, one end of the first short-circuit part 8 and one end of the second short-circuit part 9 are fixedly connected with the bearing part; the elastic piece 20 is a spring, one end of which is matched with the bearing part and the other end is matched with the short-circuit mechanism shell 2. The elastic piece 20 ensures the reliable contact force between the first short-circuit part 8 and the first matching part 16 and between the second short-circuit part 9 and the second matching part 17, and ensures the reliable conduction of the short-circuit piece 3 and the corresponding short-circuit matching pair.

[0066] Specifically, the short-circuit mechanism shell 2 comprises a mounting structure 15 matched with the short-circuit piece 3 in one-to-one, the mounting structure 15 comprises a third cavity 23, the bearing part is slidably arranged in the third cavity 23, the side wall of the third cavity 23 is provided with a first insertion hole 12 through which the first short-circuit part 8 passes and protrudes outside the short-circuit mechanism shell 2 for abutting electrical connection with the first matching part 16, and a second insertion hole 13 through which the second short-circuit part 9 passes and protrudes outside the short-circuit mechanism shell 2 for abutting electrical connection with the second matching part 17. Further, the elastic piece 20 is a compression spring arranged between the side wall of the third cavity 23 and the bearing part. Further, the short-circuit piece 3 further comprises a short-circuit cross beam 24, the first short-circuit part 8, the short-circuit cross beam 24 and the second short-circuit part 9 are sequentially connected, the first short-circuit part 8 and the second short-circuit part 9 are fixedly connected with the short-circuit cross beam 24 and are connected in series through the short-circuit cross beam 24, and the short-circuit cross beam 24 serves as the bearing part. Further, the first short-circuit part 8, the second short-circuit part 9 and the short-circuit cross beam 24 are of an integral structure or a split structure, in this embodiment, the three are preferably of an integral structure, and the whole is in a U-shaped structure and is cut and bent from a conductive metal plate.

[0067] Specifically, a limiting surface is formed between the first insertion hole 12 and the second insertion hole 13, and the elastic piece 20 acts on the short-circuit piece 3 so that the short-circuit cross beam 24 abuts against the limiting surface.

[0068] It should be pointed out that the elastic member 20 is not limited to a spring, but can also be a spring sheet or other elastic component that meets the functional requirements.

[0069] The following is another implementation of the elastic member 20 cooperating with the short-circuit member 3: the mounting structure 15 includes a fourth cavity for mounting the first short-circuit part 8 and a fifth cavity for mounting the second short-circuit part 9, the first short-circuit part 8 is slidably arranged in the fourth cavity at one end (the first inner end) and protrudes outside the short-circuit mechanism shell 2 at the other end through the first insertion hole 12, the first insertion hole 12 is in opposite communication with the fourth cavity, the second short-circuit part 9 is slidably arranged in the fifth cavity at one end (the second inner end) and protrudes outside the short-circuit mechanism shell 2 at the other end through the second insertion hole 13, the second insertion hole 13 is in opposite communication with the fifth cavity; the elastic member 20 is a compression spring, one elastic member 20 is arranged between the first inner end and the side wall of the fourth cavity, and the first inner end further cooperates with the short-circuit mechanism shell 2 to prevent the first short-circuit part 8 from coming out, and the other elastic member 20 is arranged between the second inner end and the side wall of the fifth cavity, and the second inner end further cooperates with the short-circuit mechanism shell 2 to prevent the second short-circuit part 9 from coming out. Alternatively, the elastic member 20 can also be a V-shaped spring, wherein the middle part is fixedly arranged and the two arms always abut against the first inner end and the second inner end respectively.

[0070] As shown in Figures 7-13 , the first cooperating part 16 is assumed by the incoming line connection terminal 18 for plugging and electrically connecting with the incoming line terminal of the electric energy meter and fixedly arranged on the plugging base 60 carrying the electric energy meter; that is, the first cooperating part 16 is assumed by the incoming line connection terminal 18, which is fixedly arranged on the plugging base 60 and used for plugging and electrically connecting with the incoming line terminal of the electric energy meter. Further, the incoming line connection terminal 18 is used for plugging and electrically connecting with the incoming line terminal of the electric energy meter at one end, and is fixedly arranged on the plugging base 60 and used as the first cooperating part 16 at the other end.

[0071] As other embodiments of the first cooperating part 16, the first cooperating part 16 can also be assumed by the first copper bar 25 in the short-circuit device of the first embodiment, or the first cooperating part 16 is a structure independent of the incoming line connection terminal 18 and the first copper bar 25, the first cooperating part 16 is electrically connected with the incoming line connection terminal 18 or the first copper bar 25, or the first cooperating part 16 is an independently arranged structure electrically connected with the corresponding incoming line conductor.

[0072] As shown in Figures 7-13As shown, the second matching part 17 is assumed by the outlet connection terminal 19 which is arranged fixedly on the plug-in base 60 and is used for plug-in electrical connection with the outlet terminal of the electric energy meter; that is, the second matching part 17 is assumed by the outlet connection terminal 19 which is arranged fixedly on the plug-in base 60 and is used for plug-in electrical connection with the outlet terminal of the electric energy meter. Further, the outlet connection terminal 19 is used for plug-in electrical connection with the outlet terminal of the electric energy meter at one end, and is arranged fixedly on the plug-in base 60 and is used as the first matching part 16 at the other end.

[0073] As other embodiments of the second matching part 17, the second matching part 17 can also be assumed by the second copper bar 26 in the short-circuit device of the second embodiment, or the second matching part 17 is a structure independent of the outlet connection terminal 19 and the second copper bar 26, the second matching part 17 is electrically connected with the outlet connection terminal 18 or the second copper bar 26, or the second matching part 17 is an independently arranged structure electrically connected with the corresponding outlet conductor.

[0074] In the short-circuit device of the second embodiment, when the short-circuit mechanism 1 is in the short-circuit position, the short-circuit mechanism shell 2 is also used for limiting cooperation with the plug-in base 60 which carries the electric energy meter and the short-circuit cooperation mechanism, so as to keep the short-circuit mechanism 1 in the short-circuit position without manual operation of the operator.

[0075] Specifically, as shown in Figures 8-11 , 13-14, the short-circuit mechanism 1 further comprises two groups of buckle members 22, the buckle member 22 comprises a first buckle leg 28; the short-circuit mechanism shell 2 further comprises two short-circuit mechanism buckle holes 30 arranged respectively at both ends thereof; when the short-circuit mechanism 1 is in the short-circuit position, the short-circuit mechanism shell 2 is used for being inserted between the two oppositely arranged base side walls 61 of the plug-in base 60, the two short-circuit mechanism buckle holes 30 are used for corresponding cooperation with the base buckle holes 62 arranged on the pair of side walls of the plug-in base 60 respectively, and the first buckle leg 28 is used for being inserted into the corresponding short-circuit mechanism buckle hole 30 and base buckle hole 62; that is, when the short-circuit mechanism 1 is in the short-circuit position, the short-circuit mechanism shell 2 is inserted between the two oppositely arranged base side walls 61 of the plug-in base 60, so that the short-circuit member 3 also enters the working position under the driving of the short-circuit mechanism shell 2, the base side wall 61 is provided with the base buckle hole 62, the two short-circuit mechanism buckle holes 30 of the short-circuit mechanism shell 2 are oppositely cooperated with the two base buckle holes 62 respectively, and the first buckle leg 28 is inserted into the corresponding short-circuit mechanism buckle hole 30 and base buckle hole 62, so as to keep the relative position of the short-circuit mechanism 1 and the plug-in base 60 stable.

[0076] Further, the buckle member 22 further comprises a buckle beam 27 and a second buckle leg 29, the buckle beam 27 is respectively connected with the first buckle leg 28 and the second buckle leg 29 at both ends, and the first buckle leg 28 and the second buckle leg 29 are oppositely arranged; the buckle member 22 is preferably in a U-shaped structure; when the short-circuiting mechanism 1 is in the short-circuiting position, the buckle beams 27 of the two groups of buckle members 22 are arranged on both sides of the two base side walls 61 of the plug-in base 60 respectively, and the second buckle leg 29 and the short-circuiting matching mechanism are respectively located on both sides of the short-circuiting mechanism shell 2, and the second buckle leg 29 is arranged on one side of the short-circuiting mechanism shell 2 and the corresponding base side wall 61; that is, when the short-circuiting mechanism 1 is in the short-circuiting position, the buckle beams 27 of the two groups of buckle members 22 are respectively located on both sides of the two base side walls 61 of the plug-in base 60, and the second buckle leg 29 and the short-circuiting matching mechanism are respectively located on both sides of the short-circuiting mechanism shell 2, and the second buckle leg 29 is located on the same side of the short-circuiting mechanism shell 2 and the corresponding base side wall 61.

[0077] The buckle member 22 has a simple structure, and the installation operation of the buckle member 22 with the short-circuiting mechanism 1 and the plug-in base 60 is simple and easy to operate, which not only ensures that the short-circuiting mechanism 1 is reliably kept in the short-circuiting position, but also simplifies the operation.

[0078] As other embodiments of the limiting cooperation between the short-circuiting mechanism shell 2 and the plug-in base 60, the short-circuiting mechanism shell 2 and the plug-in base 60 are limited and cooperated by a limiting structure; the limiting structure comprises elastic clamping arms and clamping grooves, two groups of elastic clamping arms are respectively arranged on the two base side walls 61 of the plug-in base 60, and two groups of clamping grooves are respectively arranged on both ends of the short-circuiting mechanism shell 2; when the short-circuiting mechanism 1 is in the short-circuiting position, the two groups of elastic clamping arms are respectively clamped and cooperated with the two groups of clamping grooves; or, the limiting structure comprises clamping tables arranged on the plug-in base 60 and clamping grooves arranged on the short-circuiting mechanism shell 2, two groups of clamping tables are respectively arranged on the two sides of the two base side walls 61 arranged oppositely, and two groups of clamping grooves are respectively arranged on both ends of the short-circuiting mechanism 2; when the short-circuiting mechanism 1 is in the short-circuiting position, the two groups of clamping tables are respectively clamped into the two groups of clamping grooves. Those skilled in the art can also realize the limiting structure in other various ways using conventional technical means in the art, which will not be described one by one here.

[0079] In the short-circuiting device of the present embodiment, the number of short-circuiting pieces 3 and short-circuiting matching pairs can be increased or decreased as needed. As shown in Figures 7-11 When the short-circuiting device of the present embodiment is used in cooperation with a two-phase (i.e. P+N type) electric energy meter, i.e. when the short-circuiting device is used to short-circuit a two-phase electric energy meter, the number of short-circuiting pieces 3 and short-circuiting matching pairs is 2. As shown in Figures 12-13 When the short-circuiting device of the present embodiment is used in cooperation with a four-phase (i.e. three-phase four-wire type) electric energy meter, i.e. when the short-circuiting device is used to short-circuit a four-phase electric energy meter, the number of short-circuiting pieces 3 and short-circuiting matching pairs is 4.

[0080] The third embodiment of the short circuit device of the present application is different from the short circuit device of the first embodiment in that the first short circuit part 8 and the second short circuit part 9 are both male plug-in terminals, and the first matching part 16 and the second matching part 17 are both female plug-in terminals. It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship in use, and are only for the convenience of description, and do not indicate that the device or element referred to must have a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0081] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all of these should be considered within the protection scope of the present application.

Claims

1. A short-circuit device comprising a short-circuit mechanism (1) and a fixed short-circuit matching mechanism; the short-circuit mechanism (1) comprises a short-circuit mechanism shell (2) and a short-circuit piece (3) arranged on the short-circuit mechanism shell (2), the short-circuit piece (3) comprises a first short-circuit part (8) and a second short-circuit part (9) connected in series with each other, and each short-circuit piece (3) moves synchronously under the driving of the short-circuit mechanism shell (2); the short-circuit matching mechanism comprises a short-circuit matching pair arranged one-to-one with the short-circuit piece (3), and the short-circuit matching pair comprises a first matching part (16) and a second matching part (17) arranged one-to-one; in the short-circuit matching pair, the first matching part (16) and the second matching part (17) are used for being electrically connected with an incoming line conductor and an outgoing line conductor respectively, and the incoming line conductor and the outgoing line conductor are connected to the incoming terminal and the outgoing terminal of the same phase of an electric energy meter respectively; characterized in that when the short-circuit mechanism (1) is in a short-circuit position, the first short-circuit part (8) and the second short-circuit part (9) of each short-circuit piece (3) are respectively in abutting electrical connection with the first matching part (16) and the second matching part (17) of the corresponding short-circuit matching pair.

2. The device of claim 1, wherein: The first short-circuit part (8) is a first short-circuit pin, one end of which is located in the short-circuit mechanism shell (2) and the other end of which is in abutting electrical connection with the first matching part (16); the second short-circuit part (9) is a second short-circuit pin, one end of which is located in the short-circuit mechanism shell (2) and the other end of which is in abutting electrical connection with the second matching part (17).

3. The device of claim 1, wherein: The short-circuit piece (3) is movably arranged relative to the short-circuit mechanism shell (2) as a whole; the short-circuit mechanism (1) further comprises a resilient member (20); when the short-circuit mechanism (1) is in the short-circuit position, the resilient member (20) acts on the short-circuit piece (3) to press the first short-circuit part (8) against the corresponding first matching part (16) and to press the second short-circuit part (9) against the corresponding second matching part (17).

4. The device of claim 3, wherein: The short-circuit piece (3) further comprises a bearing part, one end of the first short-circuit part (8) and one end of the second short-circuit part (9) are fixedly connected to the bearing part respectively; the resilient member (20) is a spring, one end of which cooperates with the bearing part and the other end of which cooperates with the short-circuit mechanism shell (2).

5. The device of claim 4, wherein: The short-circuit mechanism shell (2) comprises a mounting structure (15) matched with the short-circuit piece (3) one-to-one, the mounting structure (15) comprises a third cavity (23), the bearing part is slidably arranged in the third cavity (23), and a side wall of the third cavity (23) is provided with a first insertion hole (12) through which the first short-circuit part (8) passes and a second insertion hole (13) through which the second short-circuit part (9) passes.

6. The device of claim 5, wherein: The resilient member (20) is a compression spring arranged between the side wall of the third cavity (23) and the bearing part.

7. The shorting device of any of claims 4-6, wherein: The short-circuit piece (3) further comprises a short-circuit cross beam (24), the first short-circuit part (8), the short-circuit cross beam (24) and the second short-circuit part (9) are connected in sequence, the first short-circuit part (8) and the second short-circuit part (9) are fixedly connected to the short-circuit cross beam (24) respectively and are connected in series through the short-circuit cross beam (24), and the short-circuit cross beam (24) serves as the bearing part.

8. The device of claim 7, wherein: The short-circuit piece (3) is of an integral structure and has a U-shaped structure as a whole.

9. The device of claim 1, wherein: The first matching part (16) is taken by the incoming line connection terminal (18) which is used to plug in electrically connect with the incoming line terminal of the electric energy meter and is fixedly arranged on the plug-in base (60) which bears the electric energy meter; the second matching part (17) is taken by the outgoing line connection terminal (19) which is used to plug in electrically connect with the outgoing line terminal of the electric energy meter and is fixedly arranged on the plug-in base (60) which bears the electric energy meter.

10. The device of claim 1, wherein: When the short-circuit mechanism (1) is in the short-circuit position, the short-circuit mechanism (1) is also used to limit the cooperation with the plug-in base (60) which bears the electric energy meter and the short-circuit matching mechanism, and the short-circuit mechanism (1) is kept in the short-circuit position.

11. The device of claim 10, wherein: The short-circuit mechanism (1) further comprises two groups of buckle members (22), and the buckle member (22) comprises a first buckle leg (28); The short-circuit mechanism shell (2) further comprises two short-circuit mechanism buckle holes (30) which are respectively arranged at two ends of the short-circuit mechanism shell (2); When the short-circuit mechanism (1) is in the short-circuit position, the short-circuit mechanism shell (2) is used to be inserted between the two oppositely arranged base side walls (61) of the plug-in base (60), the two short-circuit mechanism buckle holes (30) are used to correspondingly cooperate with the base buckle holes (62) which are arranged on a pair of side walls of the plug-in base (60) respectively, and the first buckle leg (28) is used to be inserted into the short-circuit mechanism buckle hole (30) and the base buckle hole (62) which correspond to each other.

12. The device of claim 11, wherein: The buckle member (22) further comprises a buckle beam (27) and a second buckle leg (29), the buckle beam (27) is respectively connected with the first buckle leg (28) and the second buckle leg (29) by being bent at two ends, and the first buckle leg (28) and the second buckle leg (29) are oppositely arranged; When the short-circuit mechanism (1) is in the short-circuit position, the buckle beams (27) of the two groups of buckle members (22) are respectively used to be arranged on both sides of the two base side walls (61) of the plug-in base (60), the second buckle leg (29) and the short-circuit matching mechanism are respectively located on both sides of the short-circuit mechanism shell (2), and the second buckle leg (29) is used to be arranged on one side of the short-circuit mechanism shell (2) and the corresponding base side wall (61).

13. The device of claim 11, wherein: The short-circuit mechanism shell (2) is provided with a buckle storage hole (21) which is used to accommodate the buckle member (22).

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