Connecting rod for connecting frame switch moving contact system and mechanism

Abstract

The utility model discloses a connecting rod for connecting a frame switch moving contact system and a mechanism, the connecting rod comprises a connecting sheet 1 and a connecting sheet 2, the connecting sheet 1 and the connecting sheet 2 are connected through a connecting part, and two ends of the connecting sheet 1 and the connecting sheet 2 are respectively provided with a connecting hole 1 and a connecting hole 2. The connecting rod is connected with the mechanism through the first connecting hole, the connecting rod is connected with the moving contact system through the second connecting hole, and the connecting part is located between the first connecting hole and the second connecting hole and located on the sides, away from the moving contact system, of the first connecting piece and the second connecting piece. When the moving contact system moves, the connecting part not only can ensure the connecting strength of the connecting sheet I and the connecting sheet II, but also can not interfere with the base when the opening distance of the contact is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of circuit breaker, specifically relates to a connecting rod for connecting frame switch moving contact system and mechanism, and is especially suitable for the moving contact system of high-voltage DC disconnecting switch. BACKGROUND

[0002] In the field of low-voltage electrical apparatus, the rated voltage of traditional DC disconnecting switch usually only supports DC1500V. With the upgrading of industry demand, DC switch needs to support higher voltage (such as AC2000V, DC3000V). In the prior art, the single-pole voltage division of 2P / DC1500V or 2P / DC2000V products is too high, which leads to difficult arc extinguishing and easy insulation failure. In the prior art, the contacts of frame switch can be full-parallel multi-piece contacts or a group of main arc contacts, and the arc contacts are used for arc extinguishing. In DC products, a separate arc contact is needed to form a narrow gap to meet the requirement of passing through the critical load current, that is, in the 2P / DC1500V frame-type disconnecting switch, the moving contact is more used in the form of main arc contact. As shown in FIG. Figure 1 The main contact has a main contact point, and the arc contact has a main contact point and an arc contact point. The main contact and the arc contact are generally arranged in the same gap array. However, when the moving contact with such a structure is used in a high-voltage product, the arc contact opening distance is often too large, and the connecting rod driving the moving contact interferes with the base, which limits the reliability in the high-voltage application scenario. SUMMARY

[0003] The utility model aims at the defect that the moving contact with the above-mentioned existing structure is often used in a high-voltage product, the arc contact opening distance is often too large, and the connecting rod driving the moving contact interferes with the base, and provides a connecting rod for connecting frame switch moving contact system and mechanism, which improves the connecting rod structure and avoids the interference between the connecting rod and the base during the opening process of the moving contact.

[0004] TECHNICAL SCHEME

[0005] In order to achieve the above technical purpose, the utility model provides a connecting rod for connecting frame switch moving contact system and mechanism, the connecting rod includes a connecting piece one and a connecting piece two, the connecting piece one and the connecting piece two are connected through a connecting part, both ends of the connecting piece one and the connecting piece two are respectively provided with a connecting hole one and a connecting hole two, the connecting rod is connected with a mechanism through the connecting hole one, and the connecting rod is connected with a moving contact system through the connecting hole two, characterized in that: the connecting part is located between the connecting hole one and the connecting hole two and is on the side of the connecting piece one and the connecting piece two away from the rotating center of the moving contact system.

[0006] In one embodiment, the connecting piece one and the connecting piece two are metal pieces.

[0007] In one of the embodiments, the connecting piece one, the connecting piece two and the connecting part are integrated.

[0008] In one of the embodiments, the connecting piece one and the connecting piece two are close to each other on the side provided with the connecting hole two.

[0009] In one of the embodiments, there is a space between the connecting piece one and the connecting piece on the side provided with the connecting hole one for accommodating the mechanism crank.

[0010] In one of the embodiments, the connecting rod one end extends into the inside of the contact support from the slotted opening on the contact support.

[0011] In one of the embodiments, the connecting rod one end extending into the inside of the contact support from the slotted opening on the contact support is rotatably mounted inside the contact support through a mounting shaft, and the connecting rod one end outside the contact support is connected with the mechanism crank through a shaft pin.

[0012] Advantages

[0013] The utility model provides a frame switch movable contact system and mechanism connection connecting rod, the connecting rod includes connecting piece one and connecting piece two, connecting piece one and connecting piece two are connected through the connecting part, both ends of connecting piece one and connecting piece two are provided with connecting hole one and connecting hole two respectively, the connecting rod is connected with the mechanism through connecting hole one, the connecting rod is connected with movable contact system through connecting hole two, the connecting part is located between connecting hole one and connecting hole two and is on the side of connecting piece one and connecting piece two far from the movable contact system rotation center, when the movable contact system moves, the connecting part can ensure the connecting strength of connecting piece one and connecting piece two, and can not interfere with the base when increasing the contact opening distance. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced the drawings needed to be used in the embodiment, should be understood, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0015] Figure 1 is the schematic diagram of the prior art connecting rod product; Figure 1 Figure 2 is the schematic diagram of the connecting rod and movable contact system connection in the embodiment of the utility model;

[0016] Figure 3 is the schematic diagram of the prior art connecting rod product; Figure 2 Figure 4 is the schematic diagram of the connecting rod and movable contact system connection in the embodiment of the utility model;

[0017] Figure 5 is the schematic diagram of the prior art connecting rod product; Figure 3 Figure 6 is the schematic diagram of the connecting rod and movable contact system connection in the embodiment of the utility model;

[0018] The utility model discloses a connecting rod, moving contact system installation schematic diagram Figure 4 The utility model discloses a connecting rod, moving contact system installation schematic diagram DETAILED DESCRIPTION

[0019] To make the purpose, technical scheme and advantage of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely explained in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0020] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the specification of the present application are for the purpose of illustration only, and do not indicate the only implementation.

[0021] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In the present application, unless otherwise explicitly specified and limited, the "on", "under", "above" and "on" of the first feature to the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the "on", "above" and "on" of the first feature to the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "below" of the first feature to the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0024] Example

[0025] In existing technologies, the contacts of frame switches can be multiple parallel contacts or a set of main arc contacts, with the arc contacts used for arc extinguishing. In DC products, a separate arc contact is required to form a narrow slit to meet the critical load current requirements. Therefore, in 2P / DC 1500V frame-type disconnect switches, the moving contact more often uses the form of a main arc contact. The main contact has a main contact point, and the arc contact has both main contacts and arc contacts, generally arranged in an array with the same gap. However, when this type of moving contact is used in high-voltage products, the arc contact gap often becomes too large, causing the moving contact to... Figure 1 The interference between the connecting rod and the base and contact support shown in the figure limits the reliability in high-voltage applications.

[0026] As attached Figure 3 and 4 As shown, in order to solve the above-mentioned technical problems, this embodiment provides a frame switch moving contact system and a connecting rod for connecting the mechanism, as shown in the attached figure. Figure 4 As shown, one end of the connecting rod 1 extends into the inner side of the contact support 4 through the slot 401 on the contact support 4. Furthermore, the end of the connecting rod 1 extending into the inner side of the contact support 4 through the slot 401 is rotatably mounted on the inner side of the contact support 4 via a mounting shaft 5, and the end of the connecting rod 1 located on the outer side of the contact support 4 is connected to a crank arm of a mechanism (not shown in the attached figure) via a pin 6.

[0027] Among them, as attached Figure 2 As shown, the connecting rod 1 includes a first connecting piece 101 and a second connecting piece 102, which are preferably metal parts. The first connecting piece 101 and the second connecting piece 102 are connected by a connecting part 103, and the first connecting piece 101, the second connecting piece 102, and the connecting part 103 are integrally formed. Connecting holes 101a and 102a are respectively provided at both ends of the first connecting piece 101 and the second connecting piece 102, and the first connecting piece 101 and the second connecting piece 102 are tightly fitted together on the side with the second connecting hole 102a. A space m exists between the first connecting piece 101 and the second connecting piece 102 on the side with the first connecting hole 101a to accommodate the mechanism crank arm.

[0028] As attached Figure 4As shown, the connecting rod 1 is connected to the mechanism (not shown in the figure) through connecting hole 101a, and the connecting rod 1 is connected to the moving contact system 3 through connecting hole 102a. The connecting part 103 is located between connecting hole 101a and connecting hole 102a, on the side away from the rotation center 301 of the moving contact system 3. Therefore, when the moving contact system 3 moves, the connecting part 103 can ensure the connection strength of connecting piece 101 and connecting piece 102, and when the contact opening distance is increased, because the connecting part 103 is located between connecting hole 101a and connecting hole 102a on the side away from the moving contact system 3, the connecting rod 1 as a whole does not interfere with the base 2 and the contact support 4.

[0029] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A connecting rod for connecting a frame switch moving contact system and a mechanism, the connecting rod (1) comprising a connecting piece one (101) and a connecting piece two (102), the connecting piece one (101) and the connecting piece two (102) being connected by a connecting part (103), the two ends of the connecting piece one (101) and the connecting piece two (102) being respectively provided with a connecting hole one (101a) and a connecting hole two (102a), the connecting rod (1) being connected to a mechanism through the connecting hole one (101a), and the connecting rod (1) being connected to a moving contact system (3) through the connecting hole two (102a), characterized in that: The connecting part (103) is located between the first connecting hole (101a) and the second connecting hole (102a), on the side of the first connecting piece (101) and the second connecting piece (102) away from the rotation center (301) of the moving contact system (3).

2. The frame switch moving contact system and connecting rod for connecting the mechanism as described in claim 1, characterized in that: The connecting piece one (101) and connecting piece two (102) are metal parts.

3. The frame switch moving contact system and connecting rod for connecting the mechanism as described in claim 1, characterized in that: The connecting piece one (101), connecting piece two (102), and connecting part (103) are integrated.

4. The frame switch moving contact system and connecting rod for connecting the mechanism as described in claim 1, characterized in that: The connecting piece one (101) and the connecting piece two (102) are pressed together on the side where the connecting hole two (102a) is provided.

5. The frame switch moving contact system and connecting rod for connecting the mechanism as described in claim 1, characterized in that: There is a space (m) between the first connecting piece (101) and the second connecting piece (102) on the side where the first connecting hole (101a) is provided, for accommodating the mechanism crank arm.

6. The frame switch moving contact system and connecting rod for connecting the mechanism as described in claim 1, characterized in that: One end of the connecting rod (1) extends into the inside of the contact support (4) through the slot (401) on the contact support (4).

7. The frame switch moving contact system and connecting rod for connecting the mechanism as described in claim 1, characterized in that: The connecting rod (1) extends from the slot (401) on the contact support (4) into the inner side of the contact support (4) and is rotatably mounted on the inner side of the contact support (4) via the mounting shaft (5). The connecting rod (1) located on the outer side of the contact support (4) is connected to a mechanism crank arm via a shaft pin (6).

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