Connecting structure of circuit breaker flashover cover

Abstract

The utility model discloses a connecting structure of a circuit breaker flashover cover, which is used for connecting a circuit breaker body and the flashover cover, the flashover cover is provided with a downward opening, and the connecting structure comprises a supporting piece, a connecting piece and a connecting piece, the circuit breaker body is connected with the front side surface of the flashover cover; firstly, the front side face of the flashover cover is connected with the circuit breaker body, the rear side face of the flashover cover is connected with the circuit breaker body through the supporting piece, compared with the prior art, the flashover cover is of an integrated design with a downward opening, the flashover cover is directly and downwards assembled in the installation and fixing process, and therefore the flashover cover is not prone to being damaged. And then connection and fixation are formed through the connecting structure, operation is easy, and many steps are not needed for operation. And two large components which are separated originally can be produced by one component, so that the processing cost is greatly reduced, and the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to a connection structure of a circuit breaker arc cover. Background Art

[0002] The existing circuit breaker, specifically the frame-type circuit breaker, has an arc cover fixed on the top surface of the circuit breaker, and the arc cover mainly plays a protective role. The existing arc cover is fixed to the circuit breaker body by means of a hook, and the long side of the arc cover is provided with a hook (specifically an L-shaped structure) extending inward, and the hook is used to cooperate with the circuit breaker body to form a connection and fixing effect between the shell and the circuit breaker body. Due to the existence of the hook, the width of the lower end of the arc cover is smaller than the width of the circuit breaker body, resulting in the arc cover being unable to be assembled on the circuit breaker body in an integrated manner, that is, when the arc cover is only provided with a downward opening, it cannot be assembled, so the arc cover needs to be split into two large parts. The technicians in this field split the arc cover into two large parts. The part with the hook is open in two directions, the side opening and the bottom opening. The other part is used to close the side opening. During installation, the part with the hook first cooperates with the circuit breaker body from the side, and then the other part cooperates with the circuit breaker body from the other side, thereby achieving the fixing effect between the arc cover and the circuit breaker body.

[0003] However, the problem with this structure is that the two components need to be processed separately, which requires two molds, resulting in high processing costs and low efficiency. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is how to reduce the processing cost of the arc cover and improve the processing efficiency. To this end, a connection structure of the arc cover of a circuit breaker is used to connect the circuit breaker body and the arc cover, and the arc cover is provided with an opening facing downward, which includes:

[0005] A support member, one end of which is connected to the circuit breaker body, and the other end of which is connected to the rear side of the arc cover;

[0006] The circuit breaker body is connected to the front side of the arc cover.

[0007] One of the support member and the circuit breaker body is provided with a fixing hole, and one of the support member and the circuit breaker body is provided with a fixing portion matched with the fixing hole.

[0008] The fixing portion and the fixing hole are in interference fit; or, the fixing portion and the fixing hole are in clearance fit; or, the fixing portion and the fixing hole are in elastic snap fit.

[0009] The support member is provided with an extension portion, and the extension portion extends upward.

[0010] The support member is provided with a fitting portion, the fitting portion is connected to the upper end of the extension portion, and the fitting portion abuts against the inner side of the rear side surface of the arc cover.

[0011] The bolt passes through the rear side of the arc cover and is connected with the fitting portion.

[0012] A plurality of heat dissipation holes are arranged on the side of the arcing cover.

[0013] The support member is made of plastic material and is integrally formed by injection molding.

[0014] It also includes a wiring terminal, which is fixed to the circuit breaker body, and a bolt passes through the wiring terminal and is connected to the front side of the arc cover.

[0015] It also includes an insulating plate, which is connected to the inner side of the top surface of the arc cover.

[0016] The technical solution of the utility model has the following advantages:

[0017] 1. The utility model provides a connection structure of a circuit breaker arc cover. First, the front side of the arc cover is connected to the circuit breaker body, and the rear side of the arc cover is connected to the circuit breaker body through a support. Compared with the prior art, the arc cover in the present application is not provided with a hook structure, so that the arc cover is an integrated design with an opening facing downward. During the installation and fixing process, the arc cover is directly assembled downward, and then connected and fixed through the connection structure. The operation is simple and does not require many steps. The two originally separated large parts can be produced with one part, which not only greatly reduces the processing cost, but also improves the processing efficiency.

[0018] 2. The utility model provides a connection structure for the arc cover of a circuit breaker. The cooperation between the fixing hole and the fixing part forms a connection and fixing effect between the support member and the circuit breaker body, making the connection and fixing more convenient.

[0019] 3. The utility model provides a connection structure for the arc shield of a circuit breaker. There are many ways to fix the fixing part and the fixing hole. It can be a plug-in type fixation, such as interference fit, clearance fit or elastic snap fit. In addition, the fixing part and the fixing hole can also be fixed by bolts and the like.

[0020] 4. The utility model provides a connection structure for a circuit breaker arc cover. The setting of the extension part raises the matching height between the arc cover and the circuit breaker body, thereby increasing the electrical gap between the terminal and the arc cover. At this time, the support member forms an L shape as a whole.

[0021] 5. The utility model provides a connection structure for the arc hood of a circuit breaker, wherein the fitting portion forms a fitting and fixing effect, so that the fixing between the support member and the arc hood is more stable. Here, the fitting portion and the fixing portion are in opposite directions, so the support member forms a Z shape as a whole.

[0022] 6. The utility model provides a connection structure for a circuit breaker arc cover, which is fixed by bolts, making assembly more flexible and improving assembly efficiency.

[0023] 7. The utility model provides a connection structure for a circuit breaker arc cover, and the heat dissipation holes form a heat dissipation effect.

[0024] 8. The utility model provides a connection structure for a circuit breaker arc cover, wherein the support member is an insulating member to form an insulating protection effect, and the support member is an injection-molded integrally formed setting, so that the strength of the support member is improved to prevent breakage.

[0025] 9. The utility model provides a connection structure for a circuit breaker arc cover, which further improves the fixing strength of the arc cover by connecting and fixing the wiring terminal to the arc cover.

[0026] 10. The utility model provides a connection structure for a circuit breaker arc cover, wherein the insulating plate forms an insulating protection effect, and the insulating plate and the inner side of the top surface of the arc cover can be riveted, fixed by bolts, or fixed by bonding, or other fixing methods are adopted. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a connection structure of a circuit breaker arc cover provided by the utility model;

[0029] Figure 2 A schematic diagram of the structure of a connection structure of a circuit breaker arc cover provided by the utility model;

[0030] Figure 3 A cross-sectional view of a connection structure of a circuit breaker arc cover provided by the utility model;

[0031] Figure 4 A schematic diagram of the structure of the arc cover provided by the utility model;

[0032] Figure 5This is a schematic structural diagram of the support member provided by the utility model.

[0033] Description of reference numerals:

[0034] 11. Circuit breaker body; 12. Arc cover; 13. Support member; 14. Fixing hole; 15. Fixing portion; 16. Wiring terminal; 17. Insulating plate; 121. Front side surface; 122. Rear side surface; 123. Top surface; 124. Heat dissipation vent hole; 131. Extension portion; 132. Fitting portion. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] This embodiment provides a connection structure of a circuit breaker arc cover, as shown in the attached Figure 1-5As shown, it is used to connect the circuit breaker body 11 and the arc cover 12. The arc cover 12 is provided with an opening facing downward. Here, the arc cover 12 includes a front side 121, a rear side 122, a left side, a right side and a top surface 123. The front side 121, the rear side 122, the left side and the right side are connected end to end to form a frame structure. Here, the front side 121 and the rear side 122 are both long sides, and the left side and the right side are short sides. The top surface 123 is located at the top to form a sealing structure. Therefore, the arc cover 12 forms a chamber, and the chamber is open downward. In addition, when the chamber does not have only one lower opening, when there are other needs, a side opening can also be provided without affecting the connection relationship between the arc cover 12 and the circuit breaker body 11.

[0041] The connection structure includes:

[0042] Support member 13, one end of support member 13 is connected to circuit breaker body 11, and the connection mode of support member 13 and circuit breaker body 11 can be plug-in connection, snap-on connection, or bolt connection. The other end of support member 13 is connected to rear side surface 122 of arc cover 12, and the connection mode can be plug-in connection, snap-on connection, or bolt connection. Circuit breaker body 11 is connected to front side surface 121 of arc cover 12. The connection mode can be plug-in connection, snap-on connection, or bolt connection. In this embodiment, bolt connection is used as an example for the front side surface 121 of circuit breaker body 11 and arc cover 12. First, the front side surface 121 of arc cover 12 is connected to circuit breaker body 11, and the rear side surface 122 of arc cover 12 is connected to circuit breaker body 11 through support member 13, forming a connection and fixation of front and rear sides, and the side surface of arc cover 12 is conventionally designed without hook structure. Compared with the prior art, the arc cover 12 in the present application is not provided with a hook structure, so that the arc cover 12 is an integrated design with an opening facing downward. During the installation and fixing process, the arc cover 12 is directly assembled downward and then connected and fixed by the connecting structure. The operation is simple and does not require many steps. The two originally separate large parts can be produced with one part, which not only greatly reduces the processing cost, but also improves the processing efficiency.

[0043] Specifically, as attached Figure 3 , 5As shown, one of the support member 13 and the circuit breaker body 11 is provided with a fixing hole 14, and one of the support member 13 and the circuit breaker body 11 is provided with a fixing portion 15 that cooperates with the fixing hole 14. The cooperation between the fixing hole 14 and the fixing portion 15 forms a connection and fixing effect between the support member 13 and the circuit breaker body 11, making the connection and fixing more convenient. When the support member 13 is provided with a fixing hole 14, the circuit breaker body 11 is provided with a fixing portion 15; conversely, when the support member 13 is provided with a fixing portion 15, the circuit breaker body 11 is provided with a fixing hole 14. In this embodiment, taking the case where the support member 13 is provided with a fixing portion 15 and the circuit breaker body 11 is provided with a fixing hole 14 as an example, the fixing hole 14 here is an insulating area of ​​the circuit breaker body 11, specifically a hole formed during the injection molding process in order to save materials.

[0044] Specifically, the fixing portion 15 and the fixing hole 14 are interference fit. Or, the fixing portion 15 and the fixing hole 14 are clearance fit. Or, the fixing portion 15 and the fixing hole 14 are elastic snap fit. The elastic snap fit here means that an elastic structure is fixed on the surface of the fixing portion 15, and when the fixing portion 15 and the fixing hole 14 are just matched, the elastic structure contracts, and when the fixing portion 15 and the fixing hole 14 are completely matched, the elastic structure releases energy, so that the fixing portion 15 and the fixing hole 14 are firmly fixed. There are many ways to fix the fixing portion 15 and the fixing hole 14, which can be plug-in fixation, for example, interference or elastic snap fit. In addition, the fixing portion 15 and the fixing hole 14 can also be fixed by bolts and other methods.

[0045] Specifically, as attached Figure 3 , 5 As shown, the support member 13 is provided with an extension portion 131, and the extension portion 131 extends upward. The provision of the extension portion 131 raises the matching height between the arc cover 12 and the circuit breaker body 11, thereby increasing the electrical gap between the terminal block and the arc cover 12. Here, the lower end of the extension portion 131 is connected to the fixing portion 15. Here, the extension portion 131 can be a vertical extension or an inclined extension. When the fixing portion 15 is located on the support member 13, the fixing portion 15 is connected to the extension portion 131 to form an L-shaped structure. One end of the extension portion 131 away from the fixing portion 15 is connected and fixed to the arc cover 12.

[0046] Specifically, as attached Figure 3 , 5As shown, the support member 13 is provided with a fitting portion 132, which is connected to the upper end of the extension portion 131, and the fitting portion 132 abuts against the inner side of the rear side surface 122 of the arc cover 12, where the inner side is specifically a side in the chamber. The fitting portion 132 forms a fitting and fixing effect, making the fixation between the support member 13 and the arc cover 12 more stable. Here, the lower end of the extension portion 131 is connected to the fixing portion 15, and the upper end of the extension portion 131 is connected to the fitting portion 132. The fixing portion 15 extends toward the front side, and the fitting portion 132 extends toward the rear side. The fitting portion 132 and the fixing portion 15 are in opposite directions, so the support member 13 forms a Z-shaped structure as a whole.

[0047] Specifically, the bolts pass through the rear side surface 122 of the arc cover 12 and are connected to the fitting portion 132. The bolted fixing method makes the assembly more flexible and improves the assembly efficiency. In addition to the bolted connection, other connection methods can also be used.

[0048] Specifically, the support member 13 is made of plastic material, and the support member 13 is integrally formed by injection molding. The support member 13 is an insulating member, which forms an insulating protection effect. At the same time, the support member 13 is integrally formed by injection molding, so that the strength of the support member 13 is improved to prevent breakage. In this embodiment, one support member 13 can be matched with the circuit breaker body 11 to achieve the effect of connection and fixing. The number of the support members 13 can also be two, and the two support members 13 are symmetrically arranged. The number of the support members 13 can also be multiple, and they are evenly spaced or spaced.

[0049] Specifically, as attached Figure 1-4 As shown, the side of the arc cover 12 is provided with a plurality of heat dissipation holes 124. The heat dissipation holes 124 form a heat dissipation effect. In this embodiment, the left and right side surfaces and the rear side surface 122 of the arc cover 12 are provided with a plurality of heat dissipation holes 124.

[0050] Specifically, the arc cover 12 is integrally formed, and here the arc cover 12 is specifically integrally formed of sheet metal, and the arc cover 12 is integrally formed through processes such as stamping and bending. During the assembly process, the arc cover 12 is sleeved on the top surface 123 of the circuit breaker body 11, and then the assembly effect can be achieved through bolts. The installation is flexible and convenient, and the operation is simple, thereby improving the installation efficiency. When the arc cover 12 is matched with the circuit breaker body 11, the bottom ends of the left side and the right side of the arc cover 12 are against the top surface 123 of the circuit breaker body 11, forming a supporting and fixing effect.

[0051] Specifically, as attached Figure 1-3As shown, the circuit breaker body 11 further includes a wiring terminal 16, which is fixed to the circuit breaker body 11, and the wiring terminal 16 is fixed to the top surface 123 of the circuit breaker body 11. Bolts pass through the wiring terminal 16 and are connected to the front side 121 of the arc cover 12. The fixing between the wiring terminal 16 and the arc cover 12 further improves the fixing strength of the arc cover 12. In other words, the front side 121 of the arc cover 12 is not only bolted to the circuit breaker body 11, but also bolted to the wiring terminal 16.

[0052] Specifically, as attached Figure 3 As shown, it also includes an insulating plate 17, which is connected to the inner side of the top surface 123 of the arc cover 12. The insulating plate 17 forms the effects of high temperature resistance, arc resistance and insulation protection during disconnection. The insulating plate 17 and the inner side of the top surface 123 of the arc cover 12 can be fixed by riveting, bolts, or by pasting, or by other fixing methods. Here, the inner side is specifically one side in the chamber. In addition, when the insulating plate 17 is not needed, this component can also be omitted.

[0053] Specifically, the circuit breaker body 11 in this embodiment includes a contact and a bracket for fixing the contact, and the fixing hole 14 is located on the bracket. In addition, different circuit breaker bodies 11 have different sizes, and the corresponding arcing covers 12 also have different sizes, resulting in that the long side and the short side cannot be well distinguished. In this embodiment, the front side 121 of the arcing cover 12 is on the same side as the panel of the circuit breaker body 11, and the rear side 122 of the arcing cover 12 is on the same side as the terminal side of the circuit breaker body 11.

[0054] Specifically, the installation steps in this embodiment are: first connect and fix the support 13 to the circuit breaker body 11, then install the arc cover 12 vertically downward on the top surface of the circuit breaker body 11, and finally fix the arc cover 12 to the circuit breaker body 11 by bolts.

[0055] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A connection structure of a circuit breaker arc cover, used for connecting a circuit breaker body (11) and an arc cover (12), wherein the arc cover (12) is provided with an opening facing downward, characterized in that: It includes: A support member (13), one end of the support member (13) being connected to the circuit breaker body (11), and the other end of the support member (13) being connected to the rear side surface (122) of the arc cover (12); The circuit breaker body (11) is connected to the front side surface (121) of the arc cover (12).

2. The connection structure of the circuit breaker arc cover according to claim 1, characterized in that: One of the support member (13) and the circuit breaker body (11) is provided with a fixing hole (14), and one of the support member (13) and the circuit breaker body (11) is provided with a fixing portion (15) that matches the fixing hole (14).

3. The connection structure of the arc hood of a circuit breaker according to claim 2, characterized in that: The fixing portion (15) and the fixing hole (14) are in interference fit; or, the fixing portion (15) and the fixing hole (14) are in clearance fit; or, the fixing portion (15) and the fixing hole (14) are in elastic snap fit.

4. The connection structure of the arc hood of a circuit breaker according to claim 1, characterized in that: The support member (13) is provided with an extension portion (131), and the extension portion (131) extends upward.

5. The connection structure of the arc hood of a circuit breaker according to claim 4, characterized in that: The support member (13) is provided with a fitting portion (132), the fitting portion (132) is connected to the upper end of the extension portion (131), and the fitting portion (132) abuts against the inner side of the rear side surface (122) of the arc cover (12).

6. The connection structure of the arc hood of a circuit breaker according to claim 5, characterized in that: The bolts pass through the rear side surface (122) of the arc cover (12) and are connected to the fitting portion (132).

7. The connection structure of the arc hood of a circuit breaker according to claim 1, characterized in that: A plurality of heat dissipation holes (124) are provided on the side of the arcing cover (12).

8. The connection structure of the circuit breaker arc cover according to claim 1, characterized in that: The support member (13) is made of plastic material and is integrally formed by injection molding.

9. The connection structure of the arc hood of a circuit breaker according to claim 1, characterized in that: It also comprises a connecting terminal (16), wherein the connecting terminal (16) is fixed to the circuit breaker body (11), and a bolt passes through the connecting terminal (16) and is connected to the front side surface (121) of the arc cover (12).

10. The connection structure of the arc hood of a circuit breaker according to claim 1, characterized in that: It also includes an insulating plate (17), wherein the insulating plate (17) is connected to the inner side of the top surface (123) of the arc cover (12).

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