CN211350422U - Automatic change-over switch electric appliance - Google Patents
Automatic change-over switch electric appliance Download PDFInfo
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- CN211350422U CN211350422U CN201922445722.9U CN201922445722U CN211350422U CN 211350422 U CN211350422 U CN 211350422U CN 201922445722 U CN201922445722 U CN 201922445722U CN 211350422 U CN211350422 U CN 211350422U
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Abstract
The utility model relates to the field of low-voltage electrical appliances, in particular to an automatic transfer switching device, which comprises at least one group of contact systems; each group of contact systems comprises a first power supply fixed contact, a second power supply fixed contact, a load end fixed contact, a first movable contact assembly and a second movable contact assembly; the first moving contact component and the second moving contact component comprise contact supports and V-shaped moving contact groups arranged on the contact supports; the first movable contact assembly rotates to connect/disconnect a first power supply static contact and a load end static contact; the second movable contact assembly rotates to connect/disconnect a second power supply fixed contact and a load end fixed contact; the utility model discloses an automatic change over switch electrical apparatus, its two independent moving contact subassemblies all include V type moving contact group, and it is big to open a distance, and breaking capacity is strong.
Description
Technical Field
The utility model relates to a low-voltage apparatus field, concretely relates to automatic change-over switch electrical apparatus.
Background
The automatic transfer switching device is a common low-voltage device, is commonly used in important power distribution occasions, is used for switching two power supplies, ensures that when a first power supply fails in the power supply process, the first power supply is quickly switched to a second power supply, and ensures normal power supply of a load end, so that the automatic transfer switching device pays more attention to the reliability under the normal use condition, and the switching-on and switching-off capacity.
The existing automatic transfer switch electric appliance mostly adopts a rotary plug-in type linear single-action contact structure, namely, a single moving contact device realizes the switching-on of a first power supply or the switching-on of a second power supply.
Disclosure of Invention
An object of the utility model is to overcome prior art's defect, provide an automatic change-over switch electrical apparatus, its two independent moving contact subassemblies all include V type moving contact group, and it is big to open a distance, and the breaking capacity is strong.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an automatic transfer switching apparatus comprising at least one set of contact systems; each group of the contact systems comprises a first power supply static contact 3, a second power supply static contact 1, a load end static contact 4, a first movable contact assembly 2 and a second movable contact assembly 5; the first movable contact assembly 2 and the second movable contact assembly 5 each include a contact support 25a0 and a V-shaped movable contact group provided on the contact support 25a 0; the first moving contact component 2 rotates to connect/disconnect a first power supply static contact 3 and a load end static contact 4; the second moving contact assembly 5 rotates to connect/disconnect the second power source fixed contact 1 and the load terminal fixed contact 4.
Preferably, the rotating shafts of the first movable contact assembly 2 and the second movable contact assembly 5 are arranged in parallel; the first power source static contact 3, the second power source static contact 1 and the load end static contact 4 are arranged on the circumferential outer sides of the first movable contact assembly 2 and the second movable contact assembly 5.
Preferably, the first movable contact assembly 2 is arranged below the second movable contact assembly 5, the load end fixed contact 4 is arranged on one side of a rotating shaft connecting line L-L of the first movable contact assembly 2 and the second movable contact assembly 5, the first power source fixed contact 3 and the second power source fixed contact 1 are arranged on the other side of the rotating shaft connecting line L-L of the first movable contact assembly 2 and the second movable contact assembly 5, and the first power source fixed contact 3 is arranged below the second power source fixed contact 1.
Preferably, the power supply comprises three working states, namely a double-switch state, a first power supply conduction state and a second power supply conduction state; when the automatic transfer switch electric appliance is in a double-switching state, the first movable contact component 2 disconnects the first power supply static contact 3 and the load end static contact 4, and the second movable contact component 5 disconnects the second power supply static contact 1 and the load end static contact 4; when the automatic transfer switch electric appliance is in a first power supply conduction state, the first movable contact component 2 is connected with the first power supply fixed contact 3 and the load end fixed contact 4, and the second movable contact component 5 is disconnected with the second power supply fixed contact 1 and the load end fixed contact 4; when the automatic transfer switch electric appliance is in a second power supply conduction state, the first movable contact assembly 2 disconnects the first power supply static contact 3 and the load end static contact 4, and the second movable contact assembly 5 connects the second power supply static contact 1 and the load end static contact 4.
Preferably, the first movable contact assembly 2 and the second movable contact assembly 5 have the same structure, and each of the first movable contact assembly and the second movable contact assembly comprises a contact support 25a0, a V-shaped movable contact group arranged on the contact support 25a0, a spring plate group and a limiting shaft 25a 4; the movable contact group comprises two V-shaped movable contacts 25a2 which are oppositely arranged, the spring sheet group comprises two spring sheets 25a3 which are oppositely arranged and are respectively arranged at two sides of the V-shaped movable contact group, two ends of each spring sheet 25a3 are respectively pressed against two ends of one V-shaped movable contact 25a2, and two ends of the two V-shaped movable contacts 25a2 form a fit gap 25a5 matched with the fixed contact; the limiting shaft 25a4 penetrates through and limits the contact support 25a0, the V-shaped movable contact 25a2 and the spring piece 25a 3.
Preferably, one side of the V-shaped movable contact 25a2 is provided with a positioning boss 25a24, and in two V-shaped movable contacts 25a2 of the same group of V-shaped movable contacts, the positioning boss 25a24 of one V-shaped movable contact 25a2 and the positioning boss 25a24 of the other V-shaped movable contact 25a2 are oppositely arranged and in contact connection, so that two ends of the group of V-shaped movable contacts form a matching gap 25a5 between the two V-shaped movable contacts 25a 2.
Preferably, the V-shaped movable contact 25a2 includes two contact arms 25a21, a first connection portion 25a20 and two positioning bosses 25a24, the first connection portion 25a20 is an arc-shaped structure, two ends of the first connection portion 25a20 are respectively connected to the two contact arms 25a21, the first connection portion 25a20 is provided with a movable contact connection hole 25a22 engaged with the limit shaft 25a4, one side of the first connection portion 25a20 is provided with a movable contact limit groove 25a23 engaged with the contact support 25a0 in a limit manner, and the two positioning bosses 25a24 are both disposed on the same side of the movable contact 25a2 and are disposed on the two contact arms 25a21 respectively.
Preferably, the contact support 25a0 includes an assembly groove disposed on one side thereof, and the bottom of the assembly groove is provided with an assembly groove limit projection in limit fit with the moving contact limit groove 25a 23; and two side walls of the assembling groove are respectively provided with a contact supporting connecting hole matched with the limiting shaft 25a 4.
Preferably, the spring piece 25a3 includes two spring arms 25a31 and a second connecting portion 25a30, the second connecting portion 25a30 is an arc-shaped structure, two ends of the second connecting portion 25a30 are respectively connected with the two spring arms 25a31, the second connecting portion 25a30 is provided with a spring piece connecting hole 25a32 matched with the limit shaft 25a4, one side of the second connecting portion 25a30 is provided with a spring piece limit groove 25a33, the spring piece limit groove 25a33 is matched with the assembly groove limit projection of the contact support 25a0 in a limit way, and the two spring arms 25a31 are bent towards the same side of the second connecting portion 25a 30.
Preferably, each of the first and second power source stationary contacts 3 and 1 includes a first connection plate 1a31, a first transition portion 1a32 and a first contact plate 1a34, which are integrally formed, one end of the first transition portion 1a32 is connected to the first connection plate 1a31, the other end is connected to the first contact plate 1a34, and the first transition portion 1a32 is twisted to make the first contact plate 1a34 perpendicular to the first connection plate 1a 31; one end of the first contact plate 1a34 is provided with a first chamfer structure 1a33 for facilitating the insertion of the first contact plate 1a34 into the mating gap 25a 5.
Preferably, the load terminal fixed contact 4 includes a second connecting plate 40, a second transition portion 41 and a second contact plate 42 which are integrally formed, one end of the second transition portion 41 is connected to the second connecting plate 40 in a bent manner, the other end of the second transition portion is connected to the second contact plate 42 in a bent manner, and both ends of the second contact plate 42 are respectively provided with a second chamfer structure 43, so that the second contact plate 42 can be conveniently inserted into the matching gap 25a5 of the first movable contact assembly 2 and the matching gap 25a5 of the second movable contact assembly 5.
Preferably, the second contact plate 42 includes a second upper contact plate 420 and a second lower contact plate 421 respectively connected to the second transition portion 41, the second upper contact plate 420 is provided at one end with a second chamfered structure 43 to facilitate insertion thereof into the fitting gap 25a5 of the second movable contact assembly 5, and the second lower contact plate 421 is provided at one end with a second chamfered structure 43 to facilitate insertion thereof into the fitting gap 25a5 of the first movable contact assembly 2.
The first movable contact component 2 and the second movable contact component 5 of the automatic transfer switch electric appliance of the utility model can be separately and independently controlled, which is beneficial to increasing the distance and enhancing the connection and breaking capacity of the automatic transfer switch electric appliance; the first moving contact component 2 and the second moving contact component 5 both comprise V-shaped moving contact groups, so that the opening distance is increased on the premise of not increasing the size specification of the automatic transfer switch electric appliance, and the connection and breaking capacity of the automatic transfer switch electric appliance is enhanced.
Drawings
Fig. 1 is a schematic structural view of the automatic transfer switching apparatus of the present invention;
fig. 2 is a schematic perspective view of the contact system of the present invention;
fig. 3 is a schematic projection view of the contact system of the present invention, in which the automatic transfer switch is in a double-brake state;
fig. 4 is a schematic projection view of the contact system of the present invention, in which the automatic transfer switch is in a second power-on state;
fig. 5 is a schematic projection view of the contact system of the present invention, in which the automatic transfer switch is in a first power-on state;
fig. 6 is a schematic structural view of the first movable contact assembly and the second movable contact assembly of the present invention;
FIG. 7 is a schematic view of the spring plate of the present invention;
fig. 8 is a schematic structural diagram of the moving contact of the present invention;
fig. 9 is a schematic structural diagram of a first power static contact according to the present invention;
fig. 10 is a schematic structural view of the load terminal static contact according to the present invention;
fig. 11 is another schematic structural diagram of the load terminal static contact according to the present invention.
Detailed Description
The following describes the embodiments of the automatic transfer switching device according to the present invention with reference to the embodiments shown in fig. 1 to 11. The automatic transfer switching apparatus of the present invention is not limited to the description of the following embodiments.
The utility model discloses an automatic transfer switching device, which comprises at least one group of contact systems; each group of the contact systems comprises a first power supply static contact 3, a second power supply static contact 1, a load end static contact 4, a first movable contact assembly 2 and a second movable contact assembly 5; the first movable contact assembly 2 and the second movable contact assembly 5 each include a contact support 25a0 and a V-shaped movable contact group provided on the contact support 25a 0; the first moving contact component 2 rotates to connect/disconnect a first power supply static contact 3 and a load end static contact 4; the second moving contact component 5 rotates to connect/disconnect the second power supply static contact 1 and the load end static contact 4; in the same time, the load end static contact 4 is connected with the first power supply static contact 3 or the second power supply static contact 1, that is, when the load end static contact 4 is connected with the first power supply static contact 3, the load end static contact 4 is disconnected with the second power supply static contact 1, when the load end static contact 4 is connected with the second power supply static contact 1, the load end static contact 4 is disconnected with the first power supply static contact 3, and of course, the load end static contact 4 can also be simultaneously disconnected with the first power supply static contact 3 and the second power supply static contact 1.
The first movable contact component 2 and the second movable contact component 5 of the automatic transfer switch electric appliance of the utility model can be separately and independently controlled, which is beneficial to increasing the distance and enhancing the connection and breaking capacity of the automatic transfer switch electric appliance; the first movable contact assembly 2 and the second movable contact assembly 5 both comprise V-shaped movable contact groups, so that the opening distance can be increased on the premise of not increasing the size specification of the automatic transfer switch electric appliance, the rotating angle can be larger than 60 degrees, and the connection and breaking capacity of the automatic transfer switch electric appliance is enhanced.
As shown in fig. 1 to 5, it is an embodiment of the automatic transfer switching apparatus of the present invention.
The automatic change-over switch of the utility model comprises at least one group of contact systems; each group of the contact systems comprises a first power supply static contact 3, a second power supply static contact 1, a load end static contact 4, a first movable contact assembly 2 and a second movable contact assembly 5; the first movable contact assembly 2 and the second movable contact assembly 5 each include a contact holder 25a0 and a V-shaped movable contact group provided on the contact holder 25a 0. Furthermore, two ends of the V-shaped moving contact group of the first moving contact assembly 2 are respectively matched with the first power source static contact 3 and the load end static contact 4; and two ends of the V-shaped movable contact group of the second movable contact component 5 are respectively matched with the second power supply static contact 1 and the load end static contact 4.
Preferably, the rotating shafts of the first movable contact assembly 2 and the second movable contact assembly 5 are arranged in parallel; the first power source static contact 3, the second power source static contact 1 and the load end static contact 4 are arranged on the circumferential outer sides of the first movable contact assembly 2 and the second movable contact assembly 5.
Preferably, the first movable contact assembly 2 is arranged below the second movable contact assembly 5, the load end fixed contact 4 is arranged on one side of a rotating shaft connecting line L-L of the first movable contact assembly 2 and the second movable contact assembly 5, the first power source fixed contact 3 and the second power source fixed contact 1 are arranged on the other side of the rotating shaft connecting line L-L of the first movable contact assembly 2 and the second movable contact assembly 5, and the first power source fixed contact 3 is arranged below the second power source fixed contact 1.
Preferably, the automatic transfer switching device of the present invention comprises three working states, namely a double-switch state, a first power supply conduction state and a second power supply conduction state; when the automatic transfer switch electric appliance is in a double-switching state, the first movable contact component 2 disconnects the first power supply static contact 3 and the load end static contact 4, and the second movable contact component 5 disconnects the second power supply static contact 1 and the load end static contact 4; when the automatic transfer switch electric appliance is in a first power supply conduction state, the first movable contact component 2 is connected with the first power supply fixed contact 3 and the load end fixed contact 4, and the second movable contact component 5 is disconnected with the second power supply fixed contact 1 and the load end fixed contact 4; when the automatic transfer switch electric appliance is in a second power supply conduction state, the first movable contact assembly 2 disconnects the first power supply static contact 3 and the load end static contact 4, and the second movable contact assembly 5 connects the second power supply static contact 1 and the load end static contact 4.
Specifically, as shown in fig. 2-5, the first moving contact assembly 2 is disposed below the second moving contact assembly 5, and the rotating shafts of the two are parallel, the load end static contact 4 is disposed on the left side of the rotating shaft connection line L-L, the first power source static contact 3 and the second power source static contact 1 are disposed on the right side of the rotating shaft connection line L-L, and the first power source static contact 3 is disposed below the second power source static contact 1; as shown in fig. 2 and 3, the automatic transfer switch of the present invention is in a double-switching state, the opening of the V-shaped structure of the V-shaped moving contact group of the first moving contact assembly 2 is opposite to the first power static contact 3, and the opening of the V-shaped structure of the V-shaped moving contact group of the second moving contact assembly 5 is opposite to the second power static contact 1; as shown in fig. 4, the automatic transfer switch of the present invention is in the second power conducting state, and both ends of the V-shaped moving contact group of the second moving contact assembly 5 are respectively connected to the second power static contact 1 and the load end static contact 4; as shown in fig. 5, the automatic transfer switch of the present invention is in the first power on state, and both ends of the V-shaped moving contact group of the first moving contact assembly 2 are connected to the first power static contact 3 and the load static contact 4, respectively. Further, as shown in fig. 3 and 4, the second moving contact assembly 5 rotates counterclockwise to connect the second power source static contact 1 and the load end static contact 4, rotates clockwise to disconnect the second power source static contact 1 and the load end static contact 4; the first moving contact assembly 1 rotates clockwise to connect the first power supply static contact 3 and the load end static contact 4, rotates anticlockwise to disconnect the first power supply static contact 3 and the load end static contact 4.
Preferably, as shown in fig. 1, the automatic transfer switch electric appliance of the present invention further includes a first base 6 and a second base 7, the first moving contact assembly 2 and the second moving contact assembly 5 are respectively disposed in the cavity formed by the first base 6 and the second base 7, the load end static contact 4 is disposed on the first base 6, and the first power source static contact 3 and the second power source static contact 1 are respectively disposed on the first base 6 and the second base 7.
Preferably, as shown in fig. 1 and 2, the automatic transfer switching apparatus of the present invention is a three-phase four-wire switching apparatus, which includes four sets of contact systems arranged side by side, wherein four first moving contact assemblies 2 are connected and linked by a linkage shaft, and four second moving contact assemblies 5 are connected and linked by a linkage shaft.
Preferably, as shown in fig. 2 to 5, the first movable contact assembly 2 and the second movable contact assembly 5 have the same structure.
As shown in fig. 6, is an embodiment of the first movable contact assembly 2 and the second movable contact assembly 5.
As shown in fig. 6, each of the first movable contact assembly 2 and the second movable contact assembly 5 includes a contact holder 25a0, and a V-shaped movable contact group, a spring plate group, a stopper shaft 25a4 provided on the contact holder 25a 0; the V-shaped moving contact group comprises two V-shaped moving contacts 25a2 which are oppositely arranged, the spring plate group comprises two spring plates 25a3 which are oppositely arranged and are respectively arranged at two sides of the V-shaped moving contact group, two ends of each spring plate 25a3 respectively press two ends of one V-shaped moving contact 25a2, two ends of the two V-shaped moving contacts 25a2 form a matching gap 25a5 matched with a static contact, and the static contact is inserted into a static contact gap between the two V-shaped moving contacts 25a2 and is clamped by the two V-shaped moving contacts 25a 2; the limiting shaft 25a4 penetrates through and limits the contact support 25a0, the V-shaped movable contact 25a2 and the spring piece 25a 3.
Preferably, as shown in fig. 6 and 8, one side of the V-shaped movable contact 25a2 is provided with a positioning boss 25a24, and in two V-shaped movable contacts 25a2 of the same group of V-shaped movable contacts, the positioning boss 25a24 of one V-shaped movable contact 25a2 is opposite to and in contact with the positioning boss 25a24 of the other V-shaped movable contact 25a2, so that two ends of the group of V-shaped movable contacts form a matching gap 25a5 between the two V-shaped movable contacts 25a 2. The positioning boss 25a24 ensures the uniformity of the gap between the two V-shaped moving contacts 25a2 of the same group of V-shaped moving contacts, thereby improving the matching reliability of the V-shaped moving contact component and the fixed contact; fit clearance 25a5 is favorable to reducing the static contact and passes in and out two V type moving contacts 25a2 of V type moving contact group's resistance between, reduces moving contact 25a 2's wearing and tearing, improves the utility model discloses automatic change-over switch's smooth degree of operation.
Specifically, as shown in fig. 6, the upper end and the lower end of the V-shaped movable contact group are respectively provided with a matching gap 25a5, one matching gap 25a5 is arranged between the upper ends of the two V-shaped movable contacts 25a2, and the other matching gap 25a5 is arranged between the lower ends of the two V-shaped movable contacts 25a 2; the two spring pieces 25a3 are respectively arranged at the left side and the right side of the V-shaped moving contact group, the upper end and the lower end of each spring piece 25a3 are respectively pressed against the upper end and the lower end of one V-shaped moving contact 25a2, and the two spring pieces 25a3 press the two V-shaped moving contacts 25a2 between the two spring pieces, so that the positioning bosses 25a24 of the two V-shaped moving contacts 25a2 are pressed together.
Preferably, as shown in fig. 6, the contact support 25a0 is a cylindrical structure, two end faces of the contact support are respectively provided with a pillow block 25a1 which is coaxial with the contact support 25a0, the middle part of the contact support 25a0 is provided with a polygonal shaft hole, and the linkage shaft connects the plurality of contact supports 25a0 through the shaft holes, so that linkage of the plurality of movable contact assemblies (the plurality of first movable contact assemblies 2 or the plurality of second movable contact assemblies 5) is realized.
Preferably, as shown in fig. 8, it is an embodiment of said V-shaped movable contact 25a 2.
The V-shaped moving contact 25a2 includes two contact arms 25a21, a first connection portion 25a20 and two positioning bosses 25a24, the first connection portion 25a20 is an arc structure, two ends of the first connection portion 25a20 are respectively connected with the two contact arms 25a21, the first connection portion 25a20 is provided with a moving contact connection hole 25a22 matched with the limit shaft 25a4, one side of the first connection portion 25a20 is provided with a moving contact limit groove 25a23 matched with the contact support 25a0 in a limit manner, the two positioning bosses 25a24 are both arranged on the same side of the moving contact 25a2, and the characters are respectively arranged on the two contact arms 25a 21. Further, as shown in fig. 8, the extension lines of the two contact arms 25a21 intersect, and the included angle between the extension lines of the two contact arms 25a21 is α, 0 < α < 180 °.
Preferably, as shown in fig. 6, the contact support 25a0 includes an assembly groove disposed on one side thereof, and the bottom of the assembly groove is provided with an assembly groove limit projection in limit fit with the movable contact limit groove 25a 23; and two side walls of the assembling groove are respectively provided with a contact supporting connecting hole matched with the limiting shaft 25a 4.
Preferably, as shown in fig. 7, is an embodiment of the spring plate 25a 3.
The spring piece 25a3 is also of a V-shaped structure and comprises two spring arms 25a31 and a second connecting portion 25a30, the second connecting portion 25a30 is of an arc-shaped structure, two ends of the second connecting portion 25a30 are respectively connected with the two spring arms 25a31, a spring piece connecting hole 25a32 matched with the limiting shaft 25a4 is arranged on the second connecting portion 25a30, a spring piece limiting groove 25a33 is arranged on one side of the second connecting portion 25a30, the spring piece limiting groove 25a33 is in limiting matching with the limiting protrusion of the assembling groove of the contact support 25a0, and the two spring arms 25a31 are bent towards the same side of the second connecting portion 25a 30. Further, as shown in fig. 6, when the spring piece 25a3 is engaged with the V-shaped movable contact 25a2, the second connecting portion 25a30 is located at the side of the first connecting portion 25a20 and is disposed opposite to the first connecting portion, the two spring arms 25a31 are respectively opposite to the two contact arms 25a21 of the movable contact 25a2, and the free ends of each spring arm 25a31 are uniformly pressed on only one contact arm 25a 21.
Preferably, as shown in fig. 9, each of the first and second power source stationary contacts 3 and 1 includes a first connection plate 1a31, a first transition portion 1a32 and a first contact plate 1a34, which are integrally formed, the first transition portion 1a32 is connected to the first connection plate 1a31 at one end, and is connected to the first contact plate 1a34 at the other end, and the first transition portion 1a32 is twisted to make the first contact plate 1a34 perpendicular to the first connection plate 1a 31; one end of the first contact plate 1a34 is provided with a first chamfer structure 1a33 which is convenient for the first contact plate 1a34 to be inserted into the matching gap 25a5, and the first chamfer structure 1a33 is integrally formed by adopting a twisting process. Further, a first stretching hole 1a35 is formed in the first connecting plate 1a 31. After the first transition portion 1a32 is twisted, the connection strength between the first connection plate 1a31 and the first contact plate 1a34 is improved.
Specifically, as shown in fig. 9, in an embodiment of the first power static contact 3, an upper end of the first contact plate 1a34 is provided with a first chamfered structure 1a33, and a lower end of a hole wall of the first elongated hole 1a35 protrudes below the first contact plate 1a 31. As shown in fig. 2 to 5, in an embodiment of the second power static contact 1, a lower end of the first contact plate 1a34 is provided with a first chamfered structure 1a33, and an upper end of a wall of the first elongated hole 1a35 protrudes below the first connection plate 1a 31.
As shown in fig. 10, the load terminal fixed contact 4 includes a second connecting plate 40, a second transition plate 41 and a second contact plate 42 which are integrally formed, one end of the second transition portion 41 is connected to the second connecting plate 40 in a bent manner, the other end is connected to the second contact plate 42 in a bent manner, and both ends of the second contact plate 42 are provided with second chamfer structures 43, so that the second contact plate 42 can be conveniently inserted into the matching gap 25a5 of the first movable contact assembly 2 and the matching gap 25a5 of the second movable contact assembly 5, respectively. Specifically, as shown in fig. 10, the second connection plate 40 is connected to the lower end of the second transition plate 41 at a right angle, the second contact plate 42 is connected to the upper end of the second transition plate 41 at a right angle, the second connection plate 40 and the second contact plate 42 are respectively located at two sides of the second transition plate 41, and the second contact plate 42 is perpendicular to the second connection plate 40.
Preferably, as shown in fig. 11, the second contact plate 42 includes a second upper contact plate 420 and a second lower contact plate 421 respectively connected to the second transition portion 41, the second upper contact plate 420 is provided at one end thereof with a second upper chamfered structure 430 to facilitate insertion thereof into the fitting gap 25a5 of the second movable contact assembly 5, and the second lower contact plate 421 is provided at one end thereof with a second lower chamfered structure 431 to facilitate insertion thereof into the fitting gap 25a5 of the first movable contact assembly 2.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (12)
1. An automatic transfer switching apparatus comprising at least one set of contact systems; the method is characterized in that: each group of the contact systems comprises a first power supply fixed contact (3), a second power supply fixed contact (1), a load end fixed contact (4), a first movable contact assembly (2) and a second movable contact assembly (5); the first movable contact component (2) and the second movable contact component (5) comprise contact supports (25a0) and V-shaped movable contact groups arranged on the contact supports (25a 0); the first movable contact assembly (2) rotates to connect/disconnect a first power supply static contact (3) and a load end static contact (4); the second movable contact assembly (5) rotates to connect/disconnect the second power supply fixed contact (1) and the load end fixed contact (4).
2. The automatic transfer switching apparatus according to claim 1, wherein: the rotating shafts of the first moving contact component (2) and the second moving contact component (5) are arranged in parallel; the first power source static contact (3), the second power source static contact (1) and the load end static contact (4) are arranged on the circumferential outer sides of the first movable contact component (2) and the second movable contact component (5).
3. The automatic transfer switching apparatus according to claim 2, wherein: the first movable contact assembly (2) is arranged below the second movable contact assembly (5), the load end static contact (4) is arranged on one side of a rotating shaft connecting line (L-L) of the first movable contact assembly (2) and the second movable contact assembly (5), the first power supply static contact (3) and the second power supply static contact (1) are arranged on the other side of the rotating shaft connecting line (L-L) of the first movable contact assembly (2) and the second movable contact assembly (5), and the first power supply static contact (3) is arranged below the second power supply static contact (1).
4. The automatic transfer switching apparatus according to claim 1, wherein: the power supply comprises three working states, namely a double-switch state, a first power supply conduction state and a second power supply conduction state; when the automatic transfer switch electric appliance is in a double-switching state, the first movable contact component (2) disconnects the first power supply static contact (3) and the load end static contact (4), and the second movable contact component (5) disconnects the second power supply static contact (1) and the load end static contact (4); when the automatic transfer switch electric appliance is in a first power supply conduction state, the first movable contact component (2) is connected with the first power supply fixed contact (3) and the load end fixed contact (4), and the second movable contact component (5) is disconnected with the second power supply fixed contact (1) and the load end fixed contact (4); when the automatic transfer switch electric appliance is in a second power supply conduction state, the first movable contact component (2) disconnects the first power supply fixed contact (3) and the load end fixed contact (4), and the second movable contact component (5) connects the second power supply fixed contact (1) and the load end fixed contact (4).
5. The automatic transfer switching apparatus according to any one of claims 1 to 4, wherein: the first movable contact assembly (2) and the second movable contact assembly (5) have the same structure and respectively comprise a contact support (25a0), a V-shaped movable contact group, a spring plate group and a limiting shaft (25a4), wherein the V-shaped movable contact group, the spring plate group and the limiting shaft are arranged on the contact support (25a 0); the movable contact group comprises two V-shaped movable contacts (25a2) which are oppositely arranged, the spring piece group comprises two spring pieces (25a3) which are oppositely arranged and are respectively arranged at two sides of the V-shaped movable contact group, two ends of each spring piece (25a3) respectively press two ends of one V-shaped movable contact (25a2), and two ends of the two V-shaped movable contacts (25a2) form a fit gap (25a5) matched with the fixed contacts; the limiting shaft (25a4) penetrates through and limits the contact support (25a0), the V-shaped movable contact (25a2) and the spring piece (25a 3).
6. The automatic transfer switching apparatus of claim 5, wherein: one side of the V-shaped moving contact (25a2) is provided with a positioning boss (25a24), in two V-shaped moving contacts (25a2) of the same V-shaped moving contact group, the positioning boss (25a24) of one V-shaped moving contact (25a2) and the positioning boss (25a24) of the other V-shaped moving contact (25a2) are oppositely arranged and in contact connection, and a matching gap (25a5) between the two V-shaped moving contacts (25a2) is formed at each of two ends of the V-shaped moving contact group.
7. The automatic transfer switching apparatus of claim 6, wherein: the V-shaped moving contact (25a2) comprises two contact arms (25a21), a first connecting portion (25a20) and two positioning bosses (25a24), the first connecting portion (25a20) is of an arc-shaped structure, two ends of the first connecting portion are respectively connected with the two contact arms (25a21), a moving contact connecting hole (25a22) matched with a limiting shaft (25a4) is formed in the first connecting portion (25a20), a moving contact limiting groove (25a23) in limiting fit with a contact support (25a0) is formed in one side of the first connecting portion (25a20), and the two positioning bosses (25a24) are arranged on the same side of the moving contact (25a2) and are respectively arranged on the two contact arms (25a 21).
8. The automatic transfer switching apparatus of claim 7, wherein: the contact support (25a0) comprises an assembly groove arranged on one side of the contact support, and the bottom of the assembly groove is provided with an assembly groove limiting protrusion in limiting fit with the moving contact limiting groove (25a 23); and two side walls of the assembling groove are respectively provided with a contact supporting connecting hole matched with the limiting shaft (25a 4).
9. The automatic transfer switching apparatus of claim 7, wherein: the spring piece (25a3) comprises two spring arms (25a31) and a second connecting portion (25a30), the second connecting portion (25a30) is of an arc-shaped structure, two ends of the second connecting portion are respectively connected with the two spring arms (25a31), a spring piece connecting hole (25a32) matched with the limiting shaft (25a4) is formed in the second connecting portion (25a30), a spring piece limiting groove (25a33) is formed in one side of the second connecting portion (25a30), the spring piece limiting groove (25a33) is in limiting fit with an assembling groove limiting protrusion of the contact support (25a0), and the two spring arms (25a31) are bent towards the same side of the second connecting portion (25a 30).
10. The automatic transfer switching apparatus of claim 5, wherein: the first power source static contact (3) and the second power source static contact (1) respectively comprise a first connecting plate (1a31), a first transition portion (1a32) and a first contact plate (1a34), wherein the first connecting plate (1a31) is integrally formed, one end of the first transition portion (1a32) is connected with the first connecting plate (1a31), the other end of the first transition portion is connected with the first contact plate (1a34), and the first transition portion (1a32) is twisted to enable the first contact plate (1a34) to be perpendicular to the first connecting plate (1a 31); one end of the first contact plate (1a34) is provided with a first chamfer structure (1a33) which is convenient for the first contact plate (1a34) to be inserted into the matching gap (25a 5).
11. The automatic transfer switching apparatus of claim 5, wherein: the load end static contact (4) comprises a second connecting plate (40), a second transition portion (41) and a second contact plate (42) which are integrally formed, one end of the second transition portion (41) is connected with the second connecting plate (40) in a bending mode, the other end of the second transition portion is connected with the second contact plate (42) in a bending mode, and two ends of the second contact plate (42) are respectively provided with a second chamfer structure (43) which is convenient for the second contact plate (42) to be inserted into a matching gap (25a5) of the first movable contact component (2) and a matching gap (25a5) of the second movable contact component (5).
12. The automatic transfer switching apparatus of claim 11, wherein: the second contact plate (42) comprises a second upper contact plate (420) and a second lower contact plate (421) which are respectively connected with the second transition part (41), one end of the second upper contact plate (420) is provided with a second chamfer structure (43) to facilitate the insertion of the second upper contact plate into a matching gap (25a5) of the second movable contact assembly (5), and one end of the second lower contact plate (421) is provided with a second chamfer structure (43) to facilitate the insertion of the second upper contact plate into a matching gap (25a5) of the first movable contact assembly (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922445722.9U CN211350422U (en) | 2019-12-30 | 2019-12-30 | Automatic change-over switch electric appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922445722.9U CN211350422U (en) | 2019-12-30 | 2019-12-30 | Automatic change-over switch electric appliance |
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| Publication Number | Publication Date |
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| CN211350422U true CN211350422U (en) | 2020-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220677A (en) * | 2021-12-30 | 2022-03-22 | 雷顿电气科技有限公司 | Automatic change-over switch electric appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220677A (en) * | 2021-12-30 | 2022-03-22 | 雷顿电气科技有限公司 | Automatic change-over switch electric appliance |
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Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of utility model: Automatic change-over switch electric appliance Granted publication date: 20200825 License type: Common License Record date: 20201021 |