Moving contact

Abstract

The utility model discloses a moving contact, which comprises a moving contact element, clamping openings are arranged at two ends of the moving contact element in the length direction, and the clamping openings are used for clamping static contacts. Wherein the movable contact piece is arranged above the movable contact piece, the arc guide piece is arranged above or below the movable contact piece in the height direction, the arc guide piece is attached to the movable contact piece, the arc guide piece is provided with an arc guide angle corresponding to the clamping opening, and the arc guide angle extends in the direction deviating from the clamping opening; the utility model has the characteristic of independently molded arc striking structure.

Description

Technical Field

[0001] The utility model relates to a disconnector, in particular to a moving contact of a disconnector. Background Art

[0002] For a rotary disconnector, the arc guiding parts on most moving contacts can only be integrally formed with the moving contact. The most important function of the moving contact is to clamp the static contact. Such integrally formed arc guiding parts will limit the design of the moving contact to a certain extent.

[0003] Therefore, it is necessary to improve the arc guiding structure. Summary of the Invention

[0004] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art, and aims to provide a moving contact with an independently formed arc guiding structure.

[0005] The utility model provides a moving contact, which includes a moving contact piece, and clamping mouths are arranged at both ends in the length direction of the moving contact piece, and the clamping mouths are used for clamping the static contact; wherein, an arc guiding piece is further included, and the arc guiding piece is arranged above or below the moving contact piece in the height direction, the arc guiding piece is attached to the moving contact piece, and the arc guiding piece has an arc guiding angle corresponding to the clamping mouth, and the arc guiding angle extends in a direction away from the clamping mouth.

[0006] Adopting such a structure, the arc guiding piece is arranged above or below the moving contact piece. This structure uses an independently formed arc guiding piece, so that there is no need to form an arc guiding structure on the moving contact, and the arc guiding design requirements for the moving contact can be reduced. At the same time, the arc guiding piece is attached to the moving contact piece, and the arc guiding angle extends in a direction away from the clamping mouth, which can effectively improve the arc guiding effect.

[0007] In some embodiments of the present application, the distance between the ends of the two arc guiding angles is greater than the length of the moving contact piece.

[0008] Adopting such a structure makes the length of the arc guiding piece greater than that of the moving contact piece, so that the arc guiding angle extends beyond the moving contact piece, improving the arc guiding effect.

[0009] In some embodiments of the present application, the arc guiding piece is welded to the moving contact piece.

[0010] Adopting such a structure, the arc guiding piece can be fixed by welding, and the structure is relatively stable.

[0011] In some embodiments of the present application, the arc guiding piece and the moving contact piece are riveted by rivets.

[0012] Adopting such a structure, the arc guiding piece can be fixed by riveting, the structure is relatively stable, and the processing is relatively convenient.

[0013] In some embodiments of the present application, the arc guide piece is provided with a flanging, and the flanging is riveted to the moving contact member.

[0014] With this structure, the arc guide piece can be fixed by riveting, and the structure is relatively stable and the processing is relatively convenient.

[0015] In some embodiments of the present application, the moving contact member is provided with a flanging, and the flanging is riveted to the arc guide piece.

[0016] With this structure, the arc guide piece can be fixed by riveting, and the structure is relatively stable and the processing is relatively convenient.

[0017] In some embodiments of the present application, the arc guide piece is fixed to the moving contact member by screws.

[0018] With this structure, the arc guide piece can be fixed by riveting, and the structure is relatively stable and the processing is relatively convenient.

[0019] In some embodiments of the present application, the arc guide piece further includes a main body section and two bending sections. The main body section is in contact with the moving contact member; the arc guide angle is connected to the main body section through the bending section so that the arc guide angle extends towards the center line in the height direction of the clamping opening.

[0020] With this structure, the arc guide angle is closer to the center of the clamping opening, making the arc ignition effect better.

[0021] In some embodiments of the present application, the moving contact member is a single-piece moving contact piece, and the two clamping openings are formed by bending the single-piece moving contact piece.

[0022] With this structure, the moving contact member can be just a single-piece moving contact piece.

[0023] In some embodiments of the present application, the moving contact piece includes two first elastic arms, two second elastic arms, two bending arms and a connecting arm. The first elastic arm and the second elastic arm are connected by the bending arm to form the clamping opening; the two first elastic arms are connected by the connecting arm or the two second elastic arms are connected by the connecting arm.

[0024] This single-piece moving contact piece forms the clamping opening through the first elastic arm, the second elastic arm and the bending arm, and then connects the two clamping openings through the connecting arm.

[0025] In some embodiments of the present application, when the two first elastic arms are connected by the connecting arm, at least part of the main body section is in contact with the second elastic arm.

[0026] In this case, at least part of the main body section is in contact with the second elastic arm, and the main body section can be used to impose certain restrictions on the second elastic arm, effectively reducing the problem that the clamping force of the clamping opening weakens due to elastic fatigue of the second elastic arm.

[0027] In some embodiments of the present application, when the first spring arms are connected by a connecting arm, at least a part of the main body section is in contact with the first spring arms.

[0028] In this case, by having at least a part of the main body section in contact with the first spring arms, the arc ignition effect can be effectively ensured.

[0029] In some embodiments of the present application, when the second spring arms are connected by a connecting arm, at least a part of the main body section is in contact with the first spring arms.

[0030] In this case, by having at least a part of the main body section in contact with the first spring arms, the main body section can be used to impose a certain restriction on the first spring arms, effectively reducing the problem that the clamping force of the clamping jaws weakens due to elastic fatigue of the first spring arms.

[0031] In some embodiments of the present application, when the second spring arms are connected by a connecting arm, at least a part of the main body section is in contact with the second spring arms.

[0032] In this case, by having at least a part of the main body section in contact with the second spring arms, the arc ignition effect can be effectively ensured.

[0033] In some embodiments of the present application, the clamping jaws have an entry portion for the static contact to enter, and the bent arm is located on one side of the entry portion or the bent arm is located on the side of the clamping jaws close to the arc guiding angle.

[0034] There are many design ways for the bent arm, as long as it does not hinder the entry of the static contact. It can be located on one side of the entry portion or on the side of the clamping jaws close to the arc guiding angle.

[0035] In some embodiments of the present application, the clamping jaws include a clamping area for clamping the static contact, and the clamping area is located on one side of the main body section.

[0036] With such a design, the part for clamping the static contact is located on one side of the main body section, avoiding the influence of the main body section on the clamping area.

[0037] In some embodiments of the present application, the moving contact member includes two moving contact pieces, and the two clamping jaws are jointly formed by the two moving contact pieces, and the main body section is in contact with at least a part of one of the moving contact pieces.

[0038] Adopting such a structure is also applicable to the case of two moving contact pieces. In this case, the main body section is in contact with at least a part of one of the moving contact pieces.

[0039] In some embodiments of the present application, it further includes a turntable. The turntable includes a base and an upper cover. The base and the upper cover are fixed by snap fit or ultrasonic welding. The base and the upper cover jointly form an accommodation space for installing the moving contact member and the arc guiding piece. At least one of the base and the upper cover is made of a gas generating material.

[0040] With this structure, the material of at least one of the base and the upper cover is a gas-generating material, which enables the arc to promote the gas generation of the gas-generating material during breaking, and the generated gas will contribute to arc extinction. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 Shows the positional relationship diagram of the moving contact and the static contact in Embodiment 1 of the present invention;

[0043] Figure 2 Shows the structural schematic diagram of the moving contact in Embodiment 1 of the present invention;

[0044] Figure 3 Shows the structural schematic diagram of the moving contact member and the arc guiding piece in Embodiment 1 of the present invention;

[0045] Figure 4 Shows the schematic diagram of the moving contact member being a single-piece moving contact piece in the embodiment of the present invention;

[0046] Figure 5 Shows the schematic diagram of the rivet scheme for the moving contact member and the arc guiding piece in Embodiment 1 of the present invention;

[0047] Figure 6 Shows the schematic diagram of the screw scheme for the moving contact member and the arc guiding piece in Embodiment 1 of the present invention;

[0048] Figure 7 Shows the schematic diagram of the arc guiding piece in Embodiment 1 of the present invention;

[0049] Figure 8 Shows the side view of the moving contact member and the arc guiding piece in Embodiment 1 of the present invention;

[0050] Figure 9 Shows the schematic diagram of another way of the moving contact member being a single-piece moving contact piece in the embodiment of the present invention;

[0051] Figure 10 Shows the schematic diagram of yet another way of the moving contact member being a single-piece moving contact piece in the embodiment of the present invention;

[0052] Figure 11 Shows the schematic diagram of still another way of the moving contact member being a single-piece moving contact piece in the embodiment of the present invention;

[0053] Figure 12 Shows a schematic diagram of the coincidence between the main arc guiding piece section and the clamping area in the embodiment of the present utility model;

[0054] Figure 13 Shows a schematic diagram of the moving contact member being two moving contact pieces in the embodiment of the present utility model;

[0055] Figure 14 Shows a schematic diagram of another way that the moving contact member is two moving contact pieces in the embodiment of the present utility model; Detailed implementation mode

[0056] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0057] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model.

[0058] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0059] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0060] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. Embodiment

[0061] As Figure 1-14 shown, an embodiment of the present utility model is a moving contact S1. This moving contact S1 is applied in a rotary disconnector and is used to cooperate with a static contact S2 to achieve connection and disconnection.

[0062] This moving contact S1 includes a turntable 100, a moving contact member 200, and an arc guiding piece 300. Here, in the height direction, the arc guiding piece 300 is disposed above or below the moving contact member 200. The arc guiding piece 300 is in contact with the moving contact member 200, that is, the arc from the moving contact member 200 can flow into the arc guiding piece 300. The moving contact member 200 has two clamping openings 210 in its length direction, and the clamping openings 210 are used to cooperate with the static contact S2. When the static contact S2 enters the clamping openings 210, the moving and static contacts S2 come into contact to achieve connection. When the static contact S2 completely disengages from the clamping openings 210, the moving and static contacts S2 are separated to achieve disconnection. The arc guiding angles 303 are provided at both ends in the length direction. The arc guiding angles 303 correspond to the clamping openings 210 one by one, and the arc guiding angles 303 extend in a direction away from the direction where the clamping openings 210 are located.

[0063] Here, the distance between the ends of the two arc guiding angles 303 is greater than the length of the moving contact member 200, that is to say, the length of the arc guiding piece 300 is greater than the length of the moving contact member 200.

[0064] There are many fastening methods for the arc guiding piece 300 and the moving contact member 200. As Figure 3 shown, the riveting fixing method is adopted. Here, the riveting is carried out by using the flanging 310, that is, a flanging 310 structure is formed on the arc guiding piece 300, and the flanging 310 is riveted on the moving contact member 200 through riveting. Of course, this flanging 310 structure can also be provided on the moving contact member 200, and the flanging 310 is riveted on the arc guiding piece 300 through pressing. Riveting can also adopt other methods, such as Figure 5As shown, the moving contact 200 and the arc guide piece 300 are riveted together by the rivet 310a passing through them. Obviously, the method of fastening with the screw 310b is also applicable. For example, Figure 6 as shown, the moving contact 200 and the arc guide piece 300 are fastened together by the screw 310b. In addition, welding is also a method that can be adopted, welding the arc guide piece 300 to the moving contact 200.

[0065] The arc guide piece 300 can be a flat plate or a bent structure. For example, Figure 7 as shown, the arc guide piece 300 has a bend. Here, the arc guide piece 300 is divided into a main body section 301 (the main body section 301 can be flat or, as Figure 7 shown, has a bent structure), a bent section 302, and an arc guide angle 303. The main body section 301 is used to fit with the moving contact 200. The number of bent sections 302 is two. The bent sections 302 are connected to both ends of the main body section 301, and the arc guide angle 303 is connected to the main body section 301 through the bent section 302. The design of the bent section 302 here is to make the arc guide angle 303 extend towards the center line P in the height direction of the clamping mouth 210. This extension includes two situations. The first is that the arc guide angle 303 does not reach the center line P, that is, making the arc guide angle 303 closer to the center line P in the height direction of the clamping mouth 210. The second situation is that the arc guide angle 303 intersects with the center line P in the height direction of the clamping mouth 210.

[0066] There are various ways of the moving contact 200. It can be formed by a single moving contact piece 201 or by two moving contact pieces 201.

[0067] As for the single-piece moving contact 200, for example, Figure 4 as shown, the moving contact piece 201 includes two first elastic arms 201a, two second elastic arms 201b, two bent arms 201c, and a connecting arm 201d. The first elastic arms 201a and the second elastic arms 201b are connected by the bent arms 201c to form the clamping mouth 210. Here, the two first elastic arms 201a are connected by the connecting arm 201d. As a modified implementation method, for example, Figure 9 as shown, it can also be that the two second elastic arms 201b are connected by the connecting arm 201d.

[0068] In the case of this single-piece form, there are also various ways of fitting the main body section 301. For example, Figure 3As shown, at this time, the two first elastic arms 201a are connected by a connecting arm 201d, and at least a part of the main body section 301 is in contact with the second elastic arm 201b. In this way, the main body section 301 can also play a role in preventing elastic fatigue of the clamping opening 210. Of course, in this way, at least a part of the main body section 301 can also be changed to be in contact with the first elastic arm 201a. Obviously, as a way of connecting the two second elastic arms 201b by the connecting arm 201d, the fitting of the main body section 301 can also refer to the above for a similar design, which will not be elaborated here.

[0069] For the bent arm 201c, being in different directions of the clamping opening 210 also includes the following several ways. The clamping opening 210 has an entry part 210a (entry opening) for the static contact S2 to enter, and the bent arm 201c is located on one side of the entry part 210a. Here, one side includes two situations. The first situation is as Figure 4 shown, the bent arm 201c is located on the side of the clamping opening 210 away from the rotation center O of the moving contact S1. The second situation is as Figure 10 shown, the bent arm 201c is located on the side of the clamping opening 210 close to the rotation center O of the moving contact S1.

[0070] Of course, the bent arm 201c can also be arranged on the side of the clamping opening 210 away from the entry part 210a, that is, on the side close to the arc guiding angle 303, as Figure 11 shown.

[0071] The clamping opening 210 includes a clamping area 210b, and the clamping opening 210 clamps the static contact S2 by using the clamping area 210b. Looking from the direction perpendicular to the rotation plane of the moving contact S1, the clamping area 210b here can either not coincide with the main body section 301 or coincide with the main body section 301. As Figure 5 shown, the clamping area 210b here does not coincide with the main body end 302, that is, the clamping area 210b is located on one side of the main body section 301. Again, as Figure 12 shown, the clamping area 210b here coincides with the main body section 301, that is, it is located below the main body section 301.

[0072] For the moving contact member 200 composed of two moving contact pieces 201, it includes two moving contact pieces 201, and the clamping opening 210 here is formed by the two moving contact pieces 201. The forming methods of the clamping opening 210 here are, as Figure 13 shown, there is a bent abutting part 2010 between the two moving contact pieces 201, and the clamping opening 210 is formed at the ends of the two moving contact pieces 201. Another forming method of the clamping opening 210 is, as Figure 14As shown, a component 2010a is provided between two moving contact pieces 201 so that the two moving contact pieces 201 are spaced apart, and a clamping opening 210 is formed at both ends. Here, the component 2010a can be either a part of the turntable 100, or a part of the moving contact S1, or can be inserted between the two moving contact pieces 201 through an independent component 2010a.

[0073] The turntable 100 includes a base 101 and an upper cover 102, and the base 101 and the upper cover 102 are fixed by snap-fastening. In addition, ultrasonic welding can also be used for fixing. Here, the base 101 and the upper cover 102 together form a receiving space for installing the moving contact S1 piece group and the arc guiding piece 300. Here, at least one of the base 101 and the upper cover 102 is made of a gas-generating material, and the gas-generating material is, for example, PA66, PMMA, which are insulating materials that generate gas under the high temperature of the arc gas.

[0074] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A moving contact, which includes a moving contact element with clamping openings at both ends in the length direction of the moving contact element, and the clamping openings are used for clamping a static contact; characterized in that: It further includes an arc guiding piece which is arranged above or below the moving contact in the height direction. The arc guiding piece is in contact with the moving contact, and the arc guiding piece has an arc guiding angle corresponding to the clamping opening. The arc guiding angle extends in a direction away from the clamping opening.

2. The moving contact according to claim 1, wherein: The distance between the ends of the two arc guiding angles is greater than the length of the moving contact.

3. A moving contact according to claim 1, characterized in that: The arc guiding piece is welded to the moving contact; or, the arc guiding piece and the moving contact are riveted by a rivet; or, the arc guiding piece is provided with a flanging which is riveted and pressed on the moving contact; or, the moving contact is provided with a flanging which is riveted and pressed on the arc guiding piece; or, the arc guiding piece is fixed to the moving contact by a screw.

4. The moving contact according to claim 1, wherein: The arc guiding piece further includes a main body section and two bending sections. The main body section is in contact with the moving contact; the arc guiding angle is connected to the main body section through the bending section so that the arc guiding angle extends towards the center line of the clamping opening in the height direction.

5. The moving contact according to claim 4, wherein: The moving contact is a single-piece moving contact piece which includes two first elastic arms, two second elastic arms, two bending arms and a connecting arm. The first elastic arm and the second elastic arm are connected by the bending arm to form the clamping opening; the two first elastic arms are connected by the connecting arm or the two second elastic arms are connected by the connecting arm.

6. A moving contact according to claim 5, characterized in that: When the two first elastic arms are connected by the connecting arm, at least part of the main body section is in contact with the second elastic arm; or, when the two first elastic arms are connected by the connecting arm, at least part of the main body section is in contact with the first elastic arm; or, when the two second elastic arms are connected by the connecting arm, at least part of the main body section is in contact with the first elastic arm; or, when the two second elastic arms are connected by the connecting arm, at least part of the main body section is in contact with the second elastic arm.

7. The moving contact according to claim 5, characterized in that: The clamping opening has an entrance part for the static contact to enter. The bending arm is located on one side of the entrance part or the bending arm is located on the side of the clamping opening close to the arc guiding angle.

8. A moving contact according to claim 5, characterized in that: The clamping opening includes a clamping area for clamping the static contact, and the clamping area is located on one side of the main body section.

9. The moving contact according to claim 4, characterized in that: The moving contact includes two moving contact pieces, and the two clamping openings are jointly formed by the two moving contact pieces. The main body section is in contact with at least a part of one of the moving contact pieces.

10. A moving contact according to any one of claims 1-9, characterized in that: It further includes a turntable which includes a base and an upper cover. The base and the upper cover are fixed by snap fit or ultrasonic welding. The base and the upper cover jointly form a receiving space for installing the moving contact and the arc guiding piece. At least one of the base and the upper cover is made of a gas generating material.

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