Capacity-increasing type power switch cabinet contact

Abstract

The utility model relates to a capacity-increasing type power switch cabinet contact which comprises a support, a pair of upper connecting sheets are arranged at the upper end of the support, and a pair of lower connecting sheets are arranged at the lower end of the support; an upper contact piece assembly, wherein upper contact pieces in the upper contact piece assembly are in contact with each other; an arc-shaped upper elastic piece and an upper shaft are arranged in the upper elastic piece cavity, the two ends of the upper shaft are connected with the upper connecting pieces respectively, and the upper shaft is connected with the upper elastic piece in a pressing mode so that the upper contact piece assembly can be elastically pressed at the upper end of the support. A lower contact piece assembly, wherein lower contact pieces in the lower contact piece assembly are in contact with each other; an arc-shaped lower elastic piece and a lower shaft are arranged in the lower elastic piece cavity, the two ends of the lower shaft are connected with the lower connecting pieces respectively, and the lower shaft is connected with the upper elastic piece in a pressing mode so that the lower contact piece assembly can be elastically pressed at the lower end of the support; the elastic piece is arranged in the contact piece assembly, the contact piece can be heightened, the cross section area of the contact piece is increased, the larger the cross section area is, the smaller the resistance value is, and the current circulation amount of the contact is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power equipment, concretely relates to a capacity-increased power switch cabinet contact. BACKGROUND

[0002] The prior art patent, patent application number: CN202210967660.1, patent name is: heat dissipation type power switch cabinet contact; in the prior art patent, the contact patch height is relatively thin, cannot bear the temperature rise and short resistance requirement brought by high current, and the spring sheet is above the contact patch, so that the contact patch cannot be increased to meet the high cross section requirement.

[0003] The current low-voltage circuit breaker switch cannot reliably increase capacity due to current limitations, and the product can only work within the specified current requirement. If the capacity needs to be increased and the product safety needs to be expanded, the existing product cannot meet the requirement, and forcibly using it will also have safety hazards. It is necessary to increase the capacity under safe conditions and meet the national temperature rise and short resistance standards. The market requires increasing safety and reliability within the specified current range. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems that the prior art has shortcomings, provides a capacity-increased power switch cabinet contact, and solves the technical problem that the power switch cabinet contact cannot increase capacity within the specified current requirement range.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] A capacity-increased power switch cabinet contact is provided, which comprises

[0007] A pair of upper connecting pieces are arranged on the upper end of the support, and a pair of lower connecting pieces are arranged on the lower end of the support;

[0008] An upper contact piece assembly is arranged between the two upper connecting pieces, an upper spring cavity is formed in the upper contact piece assembly, an arc-shaped upper spring and an upper shaft are arranged in the upper spring cavity, the upper ends of the upper shaft are connected with the upper connecting pieces, and the upper shaft is pressed against the upper spring, so that the upper contact piece assembly is elastically pressed against the upper end of the support;

[0009] A lower contact piece assembly is arranged between the two lower connecting pieces, a lower spring cavity is formed in the lower contact piece assembly, an arc-shaped lower spring and a lower shaft are arranged in the lower spring cavity, the lower ends of the lower shaft are connected with the lower connecting pieces, and the lower shaft is pressed against the upper spring, so that the lower contact piece assembly is elastically pressed against the lower end of the support;

[0010] The upper contact piece assembly and the lower contact piece assembly form a body socket on one side of the support, and form an external socket on the other side of the support.

[0011] Further, the upper contact piece assembly comprises a plurality of upper contact pieces, each of which is provided with an upper spring piece hole, and each of which is provided with an upper contact head at two ends; each upper contact piece is located between two upper connecting pieces and is stacked together in sequence, and each upper spring piece hole forms the upper spring piece cavity;

[0012] The lower contact piece assembly comprises a plurality of lower contact pieces, each of which is provided with a lower spring piece hole, and each of which is provided with a lower contact head at two ends; each lower contact piece is located between two lower connecting pieces and is stacked together in sequence, and each lower spring piece hole forms the lower spring piece cavity.

[0013] Further, the upper spring piece and the lower spring piece each comprise

[0014] A spring piece body, which is an arc structure, is provided with an abutting portion at two ends for cooperating with the upper contact piece assembly, and a press-fit portion in the middle for cooperating with the upper shaft or the lower shaft.

[0015] Further, the abutting portion is provided with a plurality of heat dissipation grooves, and the press-fit portion is provided with a plurality of heat dissipation holes.

[0016] Further, each heat dissipation groove separates the abutting portion into a plurality of abutting pieces, and each abutting piece abuts against one contact piece.

[0017] Further, the spring piece body is provided with a press-fit portion at two ends, and the press-fit portion extends out of the spring piece cavity.

[0018] Further, the upper shaft and the lower shaft each comprise

[0019] A shaft body, which comprises a press-fit section and a plug-in section, the press-fit section is adapted to cooperate with the spring piece, the plug-in section is adapted to be inserted into the connecting piece, and a stepped surface is formed between the plug-in section and the press-fit section, which abuts against the connecting piece to limit the movement of the shaft body between the two connecting pieces.

[0020] Further, the shaft hole on the connecting piece has a larger diameter than the press-fit section, and the shaft body is adapted to pass through the shaft hole of the connecting piece.

[0021] Further, the support in the external plug-in port is provided with a first limit and a second limit, the first limit is adapted to limit the insertion depth of the external bus, and the second limit is adapted to limit the transverse position of the external bus in the external plug-in port.

[0022] Further, the upper contact piece and the lower contact piece are each provided with a bayonet, which is adapted to be clamped with the support to limit the displacement of the upper contact piece and the lower contact piece.

[0023] The beneficial effects of the utility model are:

[0024] The utility model discloses a capacitated power switch cabinet contact, set the elastic sheet in the contact sheet subassembly, and the contact sheet can be added height, and the cross section area of contact sheet is increased, and the cross section area is bigger, and the resistance is smaller, and the current flow of contact is improved, realizes the capacitated in the current requirement range, expands the reliability of product, and the capacitated under the safe condition meets the national temperature rise and short resistance standard. BRIEF DESCRIPTION OF DRAWINGS

[0025] The utility model is further described below in combination with the drawings.

[0026] Figure 1 It is the three-dimensional view of capacitated power switch cabinet contact of the utility model;

[0027] Figure 2 It is the schematic view of capacitated power switch cabinet contact (not with upper and lower contact sheet subassembly) of the utility model;

[0028] Figure 3 It is the schematic view of support;

[0029] Figure 4 It is the schematic view of upper elastic sheet (lower elastic sheet);

[0030] Figure 5 It is the schematic view of upper contact sheet and lower contact sheet;

[0031] Figure 6 It is the schematic view of upper shaft (lower shaft);

[0032] Among them,

[0033] 1, support, 11, upper connecting sheet, 12, lower connecting sheet, 13, first limit, 14, second limit, 15, shaft hole;

[0034] 1A, first plate, 1B, second plate;

[0035] 2A, upper contact sheet subassembly, 2B, lower contact sheet subassembly, 21, upper contact sheet, 211, upper contact, 212, upper elastic sheet hole, 22, lower contact sheet, 221, lower contact, 222, lower elastic sheet hole;

[0036] 4A, upper elastic sheet, 4B, lower elastic sheet, 41, elastic sheet body, 42, abutment, 421, heat dissipation groove, 422, abutment sheet, 43, pressure joint part, 431, heat dissipation hole; 44, press fitting part;

[0037] 5A, upper shaft, 5B, lower shaft, 5, shaft body, 51, pressure joint section, 52, plug-in section. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the utility model will be described clearly and completely in combination with the drawings below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0039] The application provides a capacitated power switch cabinet contact, which is described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the application. In the following embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0040] To solve the technical problem that the power switch cabinet contact cannot be capacitated within the specified current requirement range in the prior art, an embodiment of the application provides a capacitated power switch cabinet contact. The following is a detailed description.

[0041] As shown in Figures 1 to 6 , a capacitated power switch cabinet contact comprises

[0042] A support 1 is provided with a pair of upper connecting plates 11 at the upper end and a pair of lower connecting plates 12 at the lower end.

[0043] As shown in Figure 1 , the upper contact plate assembly 2A is in contact with each other between the upper contact plates 21; the upper contact plate assembly 2A is located between the two upper connecting plates 11, and the upper contact plate assembly 2A is provided with an upper spring cavity, the upper spring cavity is provided with an arc-shaped upper spring 4A and an upper shaft 5A, the upper shaft 5A is connected to the upper connecting plate 11 at both ends, and the upper shaft 5A is pressed against the upper spring 4A, so that the upper contact plate assembly 2A is elastically pressed on the upper end of the support 1.

[0044] As shown in Figure 1 , the lower contact plate assembly 2B is in contact with each other between the lower contact plates 22; the lower contact plate assembly 2B is located between the two lower connecting plates 12, and the lower contact plate assembly 2B is provided with a lower spring cavity, the lower spring cavity is provided with an arc-shaped lower spring 4B and a lower shaft 5B, the lower shaft 5B is connected to the lower connecting plate 12 at both ends, and the lower shaft 5B is pressed against the upper spring 4A, so that the lower contact plate assembly 2B is elastically pressed on the lower end of the support 1.

[0045] Specifically, as an optional implementation manner in the embodiment, as shown in Figure 1 and Figure 5As shown in the drawings, the upper contact piece assembly 2A includes a plurality of upper contact pieces 21, each of which is provided with an upper spring piece hole 212, and each of which is formed with an upper contact head 211 at both ends; each upper contact piece 21 is located between two upper connecting pieces 11 and is stacked together in sequence, and each upper spring piece hole 212 forms the upper spring piece cavity.

[0046] As shown in the drawings, Figure 1 and Figure 5 the lower contact piece assembly 2B includes a plurality of lower contact pieces 22, each of which is provided with a lower spring piece hole 222, and each of which is formed with a lower contact head 221 at both ends; each lower contact piece 22 is located between two lower connecting pieces 12 and is stacked together in sequence, and each lower spring piece hole 222 forms the lower spring piece cavity.

[0047] In this embodiment, as shown in the drawings, Figure 6 the upper contact piece 21 and the lower contact piece 22 are provided with a bayonet, which is connected with the bracket 1 to limit the displacement of the upper contact piece 21 and the lower contact piece 22.

[0048] Specifically, as an optional embodiment in this embodiment, as shown in the drawings, Figure 2 and Figure 4 the upper spring piece 4A and the lower spring piece 4B each include

[0049] a spring piece body 41, which is an arc structure, and is formed with an abutting portion 42 at both ends for cooperating with the upper contact piece assembly 2A, and is formed with a pressing portion 43 in the middle for cooperating with the upper shaft 5A or the lower shaft 5B.

[0050] In this embodiment, as shown in the drawings, Figure 4 the spring piece body 41 of the abutting portion 42 is formed into a V-shaped structure by bending, and the V-shaped structure of the abutting portion 42 facilitates positioning of both ends of the spring piece body 41 in the spring piece cavity.

[0051] In this embodiment, as shown in the drawings, Figure 4 the pressing portion 43 is located at the middle of the spring piece body 41, and a small arc surface is formed on the pressing portion 43 to facilitate positioning and cooperation of the pressing portion 43 with the upper shaft 5A or the lower shaft 5B.

[0052] As shown in the drawings, Figure 4 the abutting portion 42 is provided with a plurality of heat dissipation grooves 421, and the pressing portion 43 is provided with a plurality of heat dissipation holes 431.

[0053] In this embodiment, as shown in the drawings, Figure 4 each heat dissipation groove 421 separates the abutting portion 42 into a plurality of abutting pieces 422, and each abutting piece 422 abuts against one contact piece. The width of the abutting piece 422 is smaller than the width of a single contact piece.

[0054] In this embodiment, asFigure 4 As shown, the spring body 41 is provided with a press-fitting part 441 at both ends, which extends out of the spring cavity. The staff can exert pressure on the spring body 41 outside the spring cavity through the press-fitting part 441, so that the spring body 41 is deformed, and the upper shaft 5A or the lower shaft 5B is inserted into the spring cavity. When the upper shaft 5A or the lower shaft 5B is installed on the support 1, the upper spring 4A and the lower spring 4B are in a stressed state.

[0055] Specifically, as an optional embodiment in the present embodiment, the upper shaft 5A and the lower shaft 5B each include

[0056] The shaft body 5 includes a crimping section 51 adapted to cooperate with the spring and a plug-in section 52 adapted to be inserted into the connecting piece. The plug-in section 52 and the crimping section 51 form a stepped surface, which abuts against the connecting piece to limit the movement of the shaft body 5 between the two connecting pieces.

[0057] As a preferred embodiment in the present embodiment, as shown in Figure 2 The shaft hole 15 on the connecting piece has a larger diameter than the diameter of the crimping section 51, and the shaft body 5 is adapted to pass through the shaft hole 15 of the connecting piece.

[0058] By expanding the diameter of the shaft hole 15 on the connecting piece, the shaft body 5 is facilitated to be inserted into the spring cavity through the shaft hole 15. When installing the shaft body 5, the spring body 41 needs to be externally pressed by the press-fitting part 441 first, and then the crimping section 51 of the shaft body 5 is inserted into the spring cavity, and the spring body 41 is released. The shaft body 5 moves radially, and then the stepped surfaces on both sides of the shaft body 5 are clamped between the two connecting pieces. At this time, the shaft body 5 is limited between the two connecting pieces and cannot move axially, that is, Figure 2 The state shown in the middle.

[0059] Specifically, as an optional embodiment in the present embodiment, as shown in Figures 1 to 3 The support 1 in the external connecting socket is provided with a first limiting part 13 and a second limiting part 14. The first limiting part 13 is adapted to limit the insertion depth of the external bus, and the second limiting part 14 is adapted to limit the transverse position of the external bus in the external connecting socket.

[0060] In the present embodiment, the first limiting part 13 is two triangular protrusions, and the second limiting part 14 is two rectangular protrusions.

[0061] As shown in Figures 1 to 3As shown, the support 1 comprises a first plate member 1A and a second plate member 1B, both of which are stamped parts, the first plate member 1A is a flat plate structure, and the second plate member 1B is a horizontally U-shaped structure, the second plate member 1B is connected with the first plate member 1A to form a "mouth" shaped support 1, the first limiting portion 13 is located on the first plate member 1A, and the second limiting portion 14 is located on the second plate member 1B, and the upper connecting edge and the lower connecting edge are both located on the second plate member 1B.

[0062] In the capacitated power switch cabinet contact of the utility model, the upper contact sheet assembly 2A and the lower contact sheet assembly 2B form a body socket on one side of the support 1, and form an external socket on the other side of the support 1, the body socket is used to be connected with the body plug of the circuit breaker, when the external bus needs to cooperate with the contact of the utility model, the external bus is inserted into the external socket, the external bus first pushes open the upper contact 211 and the lower contact 221 of the external socket, so that the upper contact 211 assembly and the lower contact 221 assembly are opened outward with the respective card holes as fulcrums, and in the opening process, the upper spring sheet 4A and the lower spring sheet 4B are compressed and deformed under stress, and at the same time, the upper contact 211 assembly and the lower contact 221 assembly are applied with reverse forces, so that the upper contact 211 assembly and the lower contact 221 assembly are clamped to the external bus in the external socket.

[0063] In the capacitated power switch cabinet contact of the utility model, the upper contact sheet assembly 2A and the lower contact sheet assembly 2B form a body socket on one side of the support 1, and form an external socket on the other side of the support 1, the body socket is used to be connected with the body plug of the circuit breaker, when the external bus needs to cooperate with the contact of the utility model, the external bus is inserted into the external socket, the external bus first pushes open the upper contact 211 and the lower contact 221 of the external socket, so that the upper contact 211 assembly and the lower contact 221 assembly are opened outward with the respective card holes as fulcrums, and in the opening process, the upper spring sheet 4A and the lower spring sheet 4B are compressed and deformed under stress, and at the same time, the upper contact 211 assembly and the lower contact 221 assembly are applied with reverse forces, so that the upper contact 211 assembly and the lower contact 221 assembly are clamped to the external bus in the external socket.

[0064] With the increase of the cross-sectional area of the contact sheet, spring sheet holes are arranged in the contact sheet, the spring sheet holes form a spring sheet cavity, the spring sheet cavity can be used for installing spring sheets and can also be used as a heat dissipation hole 431 of the contact sheet assembly, so that the switch cabinet contact can be stably cooled, a higher current can be passed, the temperature rise and short-circuit resistance standards can be met, the switch cabinet contact is more miniaturized and has high performance, and the safety and reliability of the product are improved.

[0065] In the capacitated power switch cabinet contact of the utility model, the upper contact sheet assembly 2A and the lower contact sheet assembly 2B form a body socket on one side of the support 1, and form an external socket on the other side of the support 1, the body socket is used to be connected with the body plug of the circuit breaker, when the external bus needs to cooperate with the contact of the utility model, the external bus is inserted into the external socket, the external bus first pushes open the upper contact 211 and the lower contact 221 of the external socket, so that the upper contact 211 assembly and the lower contact 221 assembly are opened outward with the respective card holes as fulcrums, and in the opening process, the upper spring sheet 4A and the lower spring sheet 4B are compressed and deformed under stress, and at the same time, the upper contact 211 assembly and the lower contact 221 assembly are applied with reverse forces, so that the upper contact 211 assembly and the lower contact 221 assembly are clamped to the external bus in the external socket.

[0066] In the description of the embodiments of the utility model, unless another definite provision and limitation, the term " install " " link " " connection " should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through the intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0067] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0068] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, and for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be through some communication interface, indirect coupling or communication connection of the device or unit, which can be electrical, mechanical or other forms.

[0069] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. they can be located in one place or distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0070] In addition, the functional units in each embodiment of the utility model can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0071] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A capacitively coupled power switchgear contact, characterized by, The bracket (1) is provided with a pair of upper connecting plates (11) at the upper end and a pair of lower connecting plates (12) at the lower end. The upper contact plate assembly (2A) is in contact with each other between the upper contact plates (21) in the upper contact plate assembly (2A); the upper contact plate assembly (2A) is located between the two upper connecting plates (11), and an upper spring cavity is formed in the upper contact plate assembly (2A), and an arc-shaped upper spring (4A) and an upper shaft (5A) are arranged in the upper spring cavity; the upper shaft (5A) is connected to the upper connecting plate (11) at both ends, and the upper shaft (5A) is pressed against the upper spring (4A) to elastically press the upper contact plate assembly (2A) on the upper end of the bracket (1). The lower contact plate assembly (2B) is in contact with each other between the lower contact plates (22) in the lower contact plate assembly (2B); the lower contact plate assembly (2B) is located between the two lower connecting plates (12), and a lower spring cavity is formed in the lower contact plate assembly (2B), and an arc-shaped lower spring (4B) and a lower shaft (5B) are arranged in the lower spring cavity; the lower shaft (5B) is connected to the lower connecting plate (12) at both ends, and the lower shaft (5B) is pressed against the upper spring (4A) to elastically press the lower contact plate assembly (2B) on the lower end of the bracket (1). The upper contact plate assembly (2A) and the lower contact plate assembly (2B) form a body socket on one side of the bracket (1), and form an external socket on the other side of the bracket (1).

2. The capacity-increased power switch cabinet contact according to claim 1, wherein the upper contact plate assembly (2A) comprises a plurality of upper contact plates (21), each of the upper contact plates (21) is provided with an upper spring hole (212), and the two ends of each of the upper contact plates (21) form upper contact heads (211); each of the upper contact plates (21) is located between the two upper connecting plates (11) and is stacked together in sequence, and each of the upper spring holes (212) forms the upper spring cavity. The lower contact plate assembly (2B) comprises a plurality of lower contact plates (22), each of the lower contact plates (22) is provided with a lower spring hole (222), and the two ends of each of the lower contact plates (22) form lower contact heads (221); each of the lower contact plates (22) is located between the two lower connecting plates (12) and is stacked together in sequence, and each of the lower spring holes (222) forms the lower spring cavity.

3. The capacity-increased power switch cabinet contact according to claim 1, wherein the upper spring (4A) and the lower spring (4B) each comprise a spring body (41) in an arc-shaped structure, the two ends of the spring body (41) form abutting portions (42) for cooperating with the upper contact plate assembly (2A), and the middle portion of the spring body (41) forms a pressing portion (43) for cooperating with the upper shaft (5A) or the lower shaft (5B).

4. The capacity-increased power switch cabinet contact according to claim 3, wherein the abutting portion (42) is provided with a plurality of heat dissipation grooves (421), and the pressing portion (43) is provided with a plurality of heat dissipation holes (431). Each of the heat dissipation grooves (421) separates the abutting portion (42) into a plurality of abutting plates (422), and each of the abutting plates (422) abuts against one contact plate. ​ ​ ​ 5. The enhanced power switchgear contact of claim 4, wherein, ​ 6. The contact of the capacity-increased power switch cabinet according to claim 3, characterized in that, Both ends of the elastic sheet body (41) are provided with press-fitting parts (44) which extend out of the elastic sheet cavity.

7. The contact of the capacity-increased power switch cabinet according to claim 1, characterized in that, Both the upper shaft (5A) and the lower shaft (5B) comprise A shaft body (5) which comprises a press-fitting section (51) and a plug-in section (52), the press-fitting section (51) is adapted to cooperate with the elastic sheet, the plug-in section (52) is adapted to be inserted into the connecting sheet, and a step surface is formed between the plug-in section (52) and the press-fitting section (51), which abuts against the connecting sheet to limit the movement of the shaft body (5) between the two connecting sheets.

8. The contact of the capacity-increased power switch cabinet according to claim 7, characterized in that, The shaft hole (15) on the connecting sheet has a larger diameter than the press-fitting section (51), and the shaft body (5) is adapted to pass through the shaft hole (15) of the connecting sheet.

9. The contact of the capacity-increased power switch cabinet according to claim 1, characterized in that, The support (1) in the external plug-in port is provided with a first limit (13) and a second limit (14), the first limit (13) is adapted to limit the insertion depth of the external busbar in the external plug-in port, and the second limit (14) is adapted to limit the transverse position of the external busbar in the external plug-in port.

10. The contact of the capacity-increased power switch cabinet according to claim 1, characterized in that, Both the upper contact sheet (21) and the lower contact sheet (22) are provided with a bayonet, which is adapted to be clamped with the support (1) to limit the displacement of the upper contact sheet (21) and the lower contact sheet (22).

Images