Contact support and contact capable of improving short-circuit resistance

Abstract

The utility model relates to a contact support for improving short endurance capability, which comprises a support body, the upper end and the lower end of the support body are respectively provided with a mounting port, the bottom of each mounting port is provided with a plurality of partition sheets, and a clamping groove for mounting a contact sheet is formed between every two adjacent partition sheets; and a bending part is formed on the partition sheet, extends towards the outer side of the bracket and is positioned between two adjacent contact sheets. A bridge type contact comprises a contact support, an upper contact piece group and a lower contact piece group. The contact support is the above contact support. The bending parts are arranged on the partition sheets of the contact support, the bending parts separate the adjacent contact sheets outside the support, the deformation of the contact sheets under the action of heating and electromagnetic field force can be directly prevented by the bending parts, and the short-term endurance capability of the contact is improved under the condition that the temperature rise is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker equipment field, concretely relates to a contact support and contact that improve short endurance capacity. BACKGROUND

[0002] The temperature rise and short endurance index of the drawer type frame circuit breaker is an important index for judging the performance.

[0003] The contact structure on the current market has the following two kinds: the first kind is to increase the spacer between each contact piece of the bridge type contact, the defect of this scheme is that the number of the spacer to be increased is large, resulting in that the cost of the whole contact is high, and the gap between the contact pieces is blocked, which is not conducive to heat dissipation, and the temperature rise level of the circuit breaker is low, the second kind is that the support of the bridge type contact is provided with a partition for improving the temperature rise level, but the contact piece is deformed under the influence of the short endurance electromagnetic force, and the short endurance index is not high.

[0004] The first kind of contact refers to the prior patent - a contact structure for drawer type circuit breaker, and the second kind of support of the bridge type contact refers to the prior patent - heat dissipation type power switch cabinet contact, a plurality of clamping grooves are formed in the mounting port of the contact support, the adjacent clamping grooves form a partition, after the contact piece is installed in the contact piece of the support, the two ends of the contact piece extend out of the support, when the contact piece is short endurance, the adjacent contact pieces will be deformed under the influence of the electromagnetic force, resulting in test failure or reducing the index. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a contact support and contact that improve short endurance capacity, and solve the technical problem of insufficient short endurance capacity of the previous contact.

[0006] The technical scheme adopted by the utility model to solve the technical problem is:

[0007] First aspect:

[0008] A contact support that improves short endurance capacity is provided, which comprises

[0009] The support body is provided with a mounting port at the upper end and the lower end, and a plurality of partition pieces are arranged at the bottom of the mounting port, and the adjacent partition pieces form a clamping groove for installing the contact piece.

[0010] A bending part is formed on the partition piece, the bending part extends out of the support and is located between the adjacent two contact pieces to abut against the adjacent contact pieces.

[0011] Further, the length L1 of the bending part extending out of the support accounts for 1 / 3-1 / 2 of the length L2 of the contact piece extending out of the support.

[0012] Further, the bending part comprises an arc piece and a straight piece.

[0013] Further, the bracket body comprises

[0014] The main bracket is a U-shaped structure comprising a pair of side plates and a bottom plate, and connecting plates are arranged at the upper and lower ends of the side plates.

[0015] The auxiliary bracket is a flat plate structure.

[0016] The auxiliary bracket is connected to the U-shaped opening of the main bracket and fixedly connected with the two side plates.

[0017] Each partition piece is arranged at the upper and lower ends of the bottom plate and the auxiliary bracket.

[0018] Further, the auxiliary bracket is provided with a bushing on the two sides.

[0019] The front end of the side plate is provided with a plug-in plate which passes through the bushing and is fixedly connected with the auxiliary bracket.

[0020] Further, the plug-in plate is riveted or welded with the side plate.

[0021] Further, a first limiting plate is arranged on the plug-in plate.

[0022] Further, two second limiting plates are arranged on the auxiliary bracket.

[0023] Second aspect:

[0024] A contact is provided, comprising

[0025] A contact bracket, an upper contact piece group and a lower contact piece group.

[0026] The contact bracket adopts any one of the contact brackets.

[0027] Each upper contact piece of the upper contact piece group is arranged in a clamping groove above the contact bracket.

[0028] Each lower contact piece of the lower contact piece group is arranged in a clamping groove below the contact bracket.

[0029] The beneficial effects of the present application are as follows:

[0030] By arranging a bending part on the partition piece of the contact bracket, the bending part separates the adjacent contact pieces outside the bracket, and the deformation of the contact pieces under the action of heat and electromagnetic force can be directly prevented by the bending part, thereby improving the short-term resistance of the contact without affecting the temperature rise.

[0031] The contact support solves the deformation of the contact patch caused by electromagnetic force, improves the short-time withstand capacity of the drawer-type frame circuit breaker, and is economical, simple in structure, reliable, and convenient to install.

[0032] The contact support is connected by riveting or welding, is convenient to assemble, simple in structure, and convenient to manufacture. BRIEF DESCRIPTION OF DRAWINGS

[0033] The utility model is further described below in combination with the drawings.

[0034] Figure 1 Fig. 1 is a schematic view of the contact support of the utility model;

[0035] Figure 2 Fig. 2 is a schematic view of the main support;

[0036] Figure 3 Fig. 3 is a schematic view of the auxiliary support;

[0037] Figure 4 Fig. 4 is a matching view between the contact patch and the support body;

[0038] Figure 5 Fig. 5 is a schematic view of the contact;

[0039] Among them,

[0040] 1, main support, 11, side plate, 12, bottom plate, 13, connecting plate, 14, plug-in plate, 15, first limiting plate;

[0041] 2, auxiliary support, 21, jack, 22, second limiting plate;

[0042] 3, partition piece, 31, bending part;

[0043] 41, upper contact patch group, 42, lower contact patch group, 43, contact patch. DETAILED DESCRIPTION

[0044] 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 below in combination with the drawings. Obviously, the described embodiments are some 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 fall within the scope of protection of the utility model.

[0045] The application provides a contact support with improved short endurance, which is described in detail below. It should be noted that the sequence of the following embodiments is not intended to limit the preferred sequence of the embodiments of the application. In the following embodiments, each embodiment is described with emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0046] To solve the technical problem of insufficient short endurance of the contact in the prior art, an embodiment of the application provides a contact support with improved short endurance, which is described in detail below.

[0047] As shown in Figures 1 to 4 , a contact support with improved short endurance includes

[0048] a support body, both ends of the support body are provided with mounting openings, and a plurality of partition pieces 3 are arranged at the bottom of the mounting openings, and a clamping groove for mounting a contact piece 43 is formed between adjacent partition pieces 3;

[0049] The partition piece 3 is provided with a bending portion 31, the bending portion 31 extends outwardly of the support and is located between two adjacent contact pieces 43 to abut against the adjacent contact pieces 43.

[0050] In this embodiment, the partition piece 3 and the support body are in an integral structure.

[0051] Specifically, as an optional implementation manner in this embodiment, as shown in Figures 1 to 4 , the bending portion 31 includes an arc piece and a straight piece.

[0052] Each partition piece 3 on the support body is formed by stamping, and the partition piece 3 is straight in the semi-finished state. The bending portion 31 is obtained by subsequently bending the partition piece 3, and the bending position is the arc piece.

[0053] Specifically, as an optional implementation manner in this embodiment, as shown in Figure 4 , the length L1 of the bending portion 31 extending out of the support accounts for 1 / 3 to 1 / 2 of the length L2 of the contact piece 43 extending out of the support.

[0054] The length of the bending portion 31 extending out should not be too long, otherwise too much heat dissipation space will be sacrificed. If the length is too short, the bending portion 31 cannot well prevent the deformation of the contact piece 43. By controlling the length of the bending portion 31 extending out, i.e., L1 accounts for 1 / 3 to 1 / 2 of L2, the size of the heat dissipation gap between the contact pieces 43 is controlled, and the deformation of the contact pieces 43 caused by the electromagnetic force is well solved under the condition of sacrificing a small heat dissipation channel.

[0055] An appropriate tolerance gap is left between the bending portion 31 and the contact piece 43, and the tolerance gap is used for the free up-and-down movement of the contact piece 43 when the busbar is inserted.

[0056] Specifically, as an optional implementation manner in the embodiment, as shown in Figures 1 to 3 the support body comprises

[0057] As shown in the main support 1, the main support 1 is a U-shaped structure, which comprises a pair of side plates 11 and a bottom plate 11, and the upper and lower ends of the side plates 11 are provided with connecting plates 13. Figure 2

[0058] As shown in the auxiliary support 2, the auxiliary support 2 is a flat plate structure. Figure 3

[0059] The auxiliary support 2 is connected to the U-shaped opening of the main support 1 and is fixedly connected with the two side plates 11.

[0060] Each partition piece 3 is arranged at the upper and lower ends of the bottom plate 11 and the auxiliary support 2.

[0061] The main support 1 and the auxiliary support 2 are fixedly connected to form a quadrilateral support as shown in the middle. Figure 1

[0062] Specifically, a rod hole is formed on the connecting plate 13, and the two connecting plates 13 are used to install a pressing rod.

[0063] In the embodiment, a mounting hole is formed between the auxiliary support 2, the bottom plate 11 and the pair of connecting plates 13.

[0064] In the embodiment, the partition piece 3 on the main support 1 is an integral structure with the main support 1; and the partition piece 3 on the auxiliary support 2 is an integral structure with the auxiliary support 2.

[0065] Specifically, as an optional implementation manner in the embodiment, as shown in Figures 1 to 3 the auxiliary support 2 is provided with a plug hole 21 on both sides;

[0066] The side plate 11 is provided with a plug-in plate 14 at the front end, the plug-in plate 14 passes through the plug hole 21 and is fixedly connected with the auxiliary support 2.

[0067] After the plug-in plate 14 is inserted into the plug hole 21, the side plate 11 abuts against the auxiliary support 2, the front end of the plug-in plate 14 protrudes out of the plug hole 21, and the protruding part of the plug-in plate 14 is fixedly connected with the auxiliary support 2.

[0068] In the embodiment, the plug-in plate 14 is connected with the side plate 11 by riveting or welding.

[0069] Specifically, if riveting is adopted, the plug-in plate 14 is riveted on both sides of the protruding part, so that the ends of the plug-in plate 14 are formed with flanges, thereby limiting the front end of the plug-in plate 14 from moving out of the plug hole 21.

[0070] ​​​If welding is adopted, spot welding is directly performed between the extension of the plug-in plate 14 and the secondary support 2.

[0071] Specifically, as an optional embodiment in the embodiment, as shown in Figure 1 and Figure 2 shown, the plug-in plate 14 is provided with a first limiting plate 15.

[0072] The two first limiting plates 15 are located on both sides of the plug-in port of the contact, and the two first limiting plates 15 are used to limit the transverse movement of the busbar inserted into the contact.

[0073] Specifically, as an optional embodiment in the embodiment, as shown in Figure 1 and Figure 3 shown, the secondary support 2 is provided with two second limiting plates 22, the second limiting plates 22 are formed on the secondary support 2 by bending, and the second limiting plates 22 are used to limit the insertion depth of the busbar.

[0074] In the embodiment, the primary support 1 and the secondary support 2 are both made of non-magnetic material.

[0075] As shown in Figure 5 , a contact includes

[0076] a contact support, an upper contact piece group 41 and a lower contact piece group 42.

[0077] The contact support adopts the contact support described above.

[0078] Each upper contact piece of the upper contact piece group 41 is arranged in a clamping groove above the contact support.

[0079] Each lower contact piece of the lower contact piece group 42 is arranged in a clamping groove below the contact support.

[0080] An upper pressing rod is arranged at the upper end of the contact support, the upper pressing rod presses the upper contact piece group 41 into the mounting port through the elastic piece, similarly, a lower pressing rod is arranged at the lower end of the contact support, the lower pressing rod presses the lower contact piece group 42 into the mounting port through the elastic piece. The specific mounting structure can be referred to the prior patent-CN218414310U-heat dissipation type power switch cabinet contact.

[0081] The contact of the utility model, after adopting the contact support of brand-new design, increases the isolation area of adjacent contact pieces through the bending part 31 on the partition piece 3, the deformation of the contact piece under the action of heat and electromagnetic force during the contact operation can be directly prevented by the bending part 31, the short-term withstand capability of the contact is improved without affecting the temperature rise.

[0082] Secondly, the contact support has a primary support 1 and a secondary support 2 connected by riveting or welding, which is convenient for assembling the contact support and has simple structure and is convenient for production and manufacturing.

[0083] The various devices (components not specifically described) selected in the present application are all general standard components or components known to those skilled in the art, the structure and principle of which can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0084] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0085] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0086] 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, 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 shown or discussed mutual ones can be through some communication interface, indirect coupling or communication connection between the devices or units, which can be electrical, mechanical or other forms.

[0087] 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 can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the present embodiment scheme.

[0088] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0089] The above is the inspiration of the ideal embodiment according to the present application, and through the above description, relevant personnel 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 in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A contact holder for improving short-term endurance, characterized in that, include The bracket body has mounting openings at both the top and bottom. Multiple partition pieces (3) are provided at the bottom of the mounting openings, and slots for mounting contact pieces (43) are formed between adjacent partition pieces (3). A bend (31) is formed on the partition piece (3), the bend (31) extends outward from the bracket and is located between two adjacent contact pieces (43) to abut against the adjacent contact pieces.

2. The contact support for improving short-term withstand capability according to claim 1, characterized in that, The length L1 of the bent portion (31) extending out of the bracket is 1 / 3 to 1 / 2 of the length L2 of the contact piece (43) extending out of the bracket.

3. A contact support for improving short-term withstand capability according to claim 1, characterized in that, The bending portion (31) includes an arc plate and a straight plate.

4. A contact support for improving short-term withstand capability according to claim 1, characterized in that, The support body includes The main support (1) is a U-shaped structure, which includes a pair of side plates (11) and a bottom plate (12). The side plates (11) are provided with connecting plates (13) at their upper and lower ends. Sub-support (2), wherein the sub-support (2) is a flat plate structure; The sub-support (2) is connected to the U-shaped opening of the main support (1) and fixedly connected to the two side plates (11); Each partition piece (3) is set at the top and bottom ends of the base plate (12) and the sub-support (2).

5. A contact support for improving short-term withstand capability according to claim 4, characterized in that, The sub-support (2) has insertion holes (21) on both sides; The side plate (11) is provided with a plug plate (14) at its front end. The plug plate (14) passes through the plug hole (21) and forms a fixed connection with the sub-support (2).

6. A contact support for improving short-term withstand capability according to claim 5, characterized in that, The plug plate (14) and the side plate (11) are connected by riveting or welding.

7. A contact support for improving short-term withstand capability according to claim 5 or 6, characterized in that, A first limiting plate (15) is provided on the plug-in plate (14).

8. A contact support for improving short-term withstand capability according to claim 4, characterized in that, Two second limiting plates (22) are provided on the sub-support (2).

9. A contact, characterized in that, include Contact support, upper contact assembly (41) and lower contact assembly (42); The contact support adopts the contact support according to any one of claims 1-8; Each upper contact piece of the upper contact piece group (41) is respectively disposed in a slot above the contact support; each lower contact piece of the lower contact piece group (42) is respectively disposed in a slot below the contact support.

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