Miniature isolating switch with indication function

Abstract

The utility model discloses a miniature disconnecting switch with an indication function, which comprises a shell, a sliding frame and an indication structure, the indication structure comprises an indication device and an indication window which are arranged on the shell, the indication device comprises a push rod part which is arranged on a motion path of the sliding frame in an extending manner and an elastic reset part which is arranged in a staggered extending manner with the push rod part, the indicating part is movably arranged in the range of the indicating window; a limiting part which is in limiting fit with the elastic resetting part is arranged in the shell; according to the technical scheme, the indicating device can reliably achieve the opening and closing indicating function of the disconnecting switch and has the elastic self-resetting function, specifically, elastic resetting force generated when the elastic resetting part is pressed and elastically deforms is used for achieving resetting rotation of the indicating device, the indicating device is simple in structure, the installation structure is simplified, installation is convenient, and cost is low. Cost is reduced, and an operator can visually judge the electrical isolation state of the isolation switch.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electric appliance technical field, concretely relates to a small size disconnecting switch with indicating function. BACKGROUND

[0002] The disconnecting switch is a kind of low voltage electric appliance switch that separates the live part from the power supply part, or is used for the conversion isolation of electric power equipment and maintenance circuit, is universally used in various low voltage distribution systems, to ensure the safe operation of electric power equipment and power line.The existing disconnecting switch is mainly composed of shell, operating mechanism and contact system, operating mechanism is driven by rotating handle, and then driving the contact of moving contact and static contact in contact or separation in contact system, to realize the closing and opening operation of disconnecting switch.

[0003] When disconnecting switch is in the open position, the insulating distance and obvious disconnecting mark between contacts need to meet the specified requirements, to ensure the safe maintenance of other electrical equipment in the circuit;When closing position, disconnecting switch needs to make current reliably pass through, to carry the current under normal circuit conditions and carry the current under abnormal conditions (such as short circuit) within the specified time.But the existing disconnecting switch is not clear about the current state during the process of line maintenance, closing or opening state, so that the user misoperation occurs, so there is a security risk, and the operation risk is large. UTILITY MODEL CONTENTS

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem that the existing disconnecting switch is not clear about the current closing or opening state during the process of line maintenance, so that the user misoperation occurs, and there is a security risk.

[0005] To solve the above technical problems, the utility model provides a small size disconnecting switch with indicating function, including shell, sliding frame and indicating structure, the sliding frame is movably arranged in the shell for driving moving contact and static contact to contact or separate, the indicating structure includes indicating device rotationally arranged in the shell and indicating window opened in the shell;The indicating device includes push rod part extendedly arranged on the movement path of the sliding frame, and elastic reset part extendedly arranged with the push rod part staggered, and indicating part movably arranged in the range of indicating window, the shell is provided with limiting part in limiting cooperation with the elastic reset part;The indicating device is positively rotated when push rod part is driven by sliding frame, and the elastic reset part is extruded to produce elastic deformation;The indicating device is reversely rotated by the elastic force exerted by elastic reset part when push rod part is separated from sliding frame.

[0006] As a preferred scheme, the indicating device comprises a round shaft part arranged on the shell, the push rod part, the elastic reset part and the indicating part are connected on the round shaft part respectively, and the push rod part, the elastic reset part and the indicating part are arranged at an included angle with each other and with the round shaft part as the center.

[0007] As a preferred scheme, the sliding frame is provided with a pushing block or a pushing groove for pushing the push rod part.

[0008] As a preferred scheme, the elastic reset part is an elastic rib arranged in a bent manner.

[0009] As a preferred scheme, the limiting part is a limiting baffle formed in the shell, and one end of the elastic rib is matched and abutted on the limiting baffle.

[0010] As a preferred scheme, one end of the elastic rib is an arc-shaped end structure.

[0011] As a preferred scheme, one end of the indicating part away from the round shaft part is provided with an indicating panel facing the indicating window, the indicating panel is provided with an indicating mark, and the indicating device rotates to drive the indicating panel to display in the indicating window.

[0012] As a preferred scheme, the sliding frame is provided with a mounting through hole for mounting the movable contact, the mounting through hole is provided with a bent spring sheet abutting and pressing on the movable contact, the movable contact and the mounting through hole are respectively provided with a positioning block, and the bent spring sheet is provided with a positioning hole matched with the positioning block.

[0013] As a preferred scheme, the handle mechanism for driving the sliding frame to move back and forth is further included, the handle mechanism comprises an operation handle arranged on the shell in a rotating manner, and a torsion spring connected between the operation handle and the shell, the operation handle is provided with a driving boss connected with the sliding frame, and the sliding frame is provided with a driving groove matched with the driving boss.

[0014] As a preferred scheme, the operation handle and the indicating device are respectively arranged on two sides of the sliding frame, the bottom of the operation handle is provided with a first protrusion, the shell is formed with a second protrusion, and the two end feet of the torsion spring are respectively connected with the first protrusion and the second protrusion in a staggered manner.

[0015] Compared with the prior art, the technical scheme of the utility model has the following advantages:

[0016] 1. In the small disconnecting switch provided by this utility model, when the disconnecting switch is closed, the sliding frame pushes the push rod, causing the indicating device to rotate forward under the drive of the sliding frame and compress the elastic reset part to produce elastic deformation. At this time, the indicating part displays the closed indication status in the indicating window. In addition, when the disconnecting switch is closed, the sliding frame moves away from the push rod and the force applied to the push rod is removed, causing the indicating device to rotate in the opposite direction under the elastic force of the elastic reset part. At this time, the indicating part displays the open indication status in the indicating window. The indicating device designed with this technical solution can reliably realize the opening and closing indication function of the disconnecting switch and also has an elastic self-resetting function. Specifically, the elastic reset force generated by the elastic deformation of the elastic reset part under pressure is used to realize the reset rotation of the indicating device, ensuring that the indicating device can quickly and accurately return to the preset position after operation. This indicating device has a simple structure, simplifies the installation structure, facilitates installation, reduces costs, ensures that operators can intuitively judge the electrical isolation status of the disconnecting switch, avoid misoperation, and ensure the safety of line maintenance or repair.

[0017] 2. In the miniature disconnect switch provided by this utility model, the push rod part, the elastic reset part, and the indicator part are arranged at an angle to each other on the round shaft part. The elastic reset part is an elastic rib with a bent structure. When the elastic rib is pressed against the limiting baffle of the housing, it will produce an elastic deformation. The elastic rib provides a reset force for the indicator device through its own elastic deformation. This structural setting simplifies the structure, reduces costs, and enhances reliability by adopting an automatic reset design of the elastic rib for the indicator device. It makes the opening and closing indication more accurate and intuitive. It is suitable for miniature disconnect switches that require frequent operation or harsh environments, taking into account both functionality and economy.

[0018] 3. In the miniature disconnect switch provided by this utility model, the moving contact is installed in the mounting through hole of the sliding frame. A bent spring sheet is provided in the mounting through hole to press against the moving contact. This bent spring sheet fits evenly with the moving contact, avoiding hot spots or arcs caused by poor local contact. With this structure, the bent spring sheet can automatically compensate for the assembly tolerance or long-term wear between the moving and stationary contacts through its own elastic deformation, maintaining stable contact pressure and reducing heat generation caused by increased contact resistance. The design of the bent spring sheet connecting the moving contact has the characteristics of elastic self-adaptation, low operating force, and high reliability, which significantly improves the electrical performance and mechanical life of the disconnect switch. Attached Figure Description

[0019] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described in the following are some embodiments of the present application, and all other drawings obtained by those skilled in the art without creative labor based on these drawings also belong to the protection scope of the present application.

[0020] Figure 1 The present application provides a small isolating switch plane structure schematic diagram;

[0021] Figure 2 The present application provides a small isolating switch three-dimensional structure schematic diagram;

[0022] Figure 3 The present application provides an indicator structure schematic diagram;

[0023] Figure 4 The present application provides a handle mechanism and sliding frame structure schematic diagram.

[0024] The figure mark explanation: 1, the shell; 11, movable contact; 12, static contact; 2, sliding frame; 21, push block; 22, drive groove; 23, positioning block; 3, indicator; 31, push rod part; 32, elastic reset part; 33, indicating part; 34, round shaft part; 35, indicating panel; 4, indicating window; 5, limit baffle; 6, bending elastic sheet; 7, operating handle; 71, drive boss; 8, torsion spring. Specific embodiments

[0025] The technical solutions of the present application will be described in detail below in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present application, not all 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 protection scope of the present application.

[0026] In the description of the present application, it should be pointed out 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, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of 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.

[0027] Embodiments

[0028] This utility model provides, for example Figures 1-4 A small disconnecting switch with an indicating function is shown, comprising a housing 1, a sliding frame 2, and an indicating structure. The sliding frame 2 is movably disposed on the housing 1 to drive the moving contact 11 to contact or separate from the stationary contact 12. During the opening and closing operation of the disconnecting switch, the sliding frame 2 is driven to move linearly back and forth. The indicating structure includes an indicating device 3 rotatably disposed on the housing 1 and an indicating window 4 opened on the housing 1. The indicating device 3 includes a push rod 31 extending along the movement path of the sliding frame 2, an elastic reset part 32 extending offset from the push rod 31, and an indicating part 33 movably disposed within the range of the indicating window 4. The housing 1 is provided with a limiting part that forms a limiting cooperation with the elastic reset part 32. When the push rod 31 is driven by the sliding frame 2, the indicating device 3 rotates forward and compresses the elastic reset part 32 to produce elastic deformation. When the push rod 31 separates from the sliding frame 2, the indicating device 3 rotates in the opposite direction by the elastic force applied by the elastic reset part 32. The operation process of the indicator device 3 when the disconnecting switch is closed is as follows: When the disconnecting switch is closed, the sliding frame 2 pushes the push rod part 31, causing the indicator device 3 to rotate forward under the drive of the sliding frame 2 and squeeze the elastic reset part 32 to produce elastic deformation. At this time, the indicator part 33 is driven to display the closed indication state at the indicator window 4. In addition, when the disconnecting switch is opened, the sliding frame 2 moves away from the push rod part 31 and removes the force applied to the push rod part 31, causing the indicator device 3 to rotate in the opposite direction under the elastic force of the elastic reset part. At this time, the indicator part 33 is driven to display the open indication state at the indicator window 4.

[0029] The above-described implementation method is the core technical solution of this embodiment. The indicator device 3 designed using this technical solution can reliably realize the opening and closing indication function of the disconnecting switch, and also has an elastic self-resetting function. Specifically, the elastic reset force generated by the elastic deformation of the elastic reset part 32 under pressure is used to realize the reset rotation of the indicator device 3, ensuring that the indicator device can quickly and accurately return to the preset position after operation. This indicator device 3 has a simple structure, simplifies the installation structure, facilitates installation, reduces costs, ensures that operators can intuitively judge the electrical isolation status of the disconnecting switch, avoid misoperation, and ensure the safety of line maintenance or repair.

[0030] The following is combined Figures 1-3 The specific configuration of the indicator device is described in detail below:

[0031] The indicating device 3 comprises a circular shaft part 34 rotatably arranged on the housing 1, the push rod part 31, the elastic reset part 32 and the indicating part 33 are respectively connected on the circular shaft part 34, and the push rod part 31, the elastic reset part 32 and the indicating part 33 are arranged at an included angle with each other and extend around the circular shaft part 34. In this arrangement, the push rod part 31, the elastic reset part 32 and the indicating part 33 rotate synchronously as a whole. The sliding frame 2 is provided with a pushing block 21 or a pushing groove for pushing the push rod part 31. That is, the push rod part 31 extends in the movement path of the pushing block 21 or the pushing groove. When the isolating switch is closed, the sliding frame 2 drives the pushing block 21 to move downward and push against the push rod part 31, thereby driving the indicating device 3 to rotate in the positive direction. When the isolating switch is closed, the sliding frame 2 drives the pushing block 21 to move upward and away from the push rod part 31. Since the push rod part 31 is no longer subjected to the pushing force from the sliding frame 2, the indicating device 3 rotates in the reverse direction under the elastic reset force of the elastic reset part 32, thereby returning to the initial position. In this document, the positive rotation and the reverse rotation of the indicating device refer to the different directions of rotation, and do not mean the actual direction of rotation of the component.

[0032] Further preferably, the elastic reset part 32 is an elastic rib arranged in a bent manner, and the limiting part is a limiting baffle 5 formed in the housing 1. One end of the elastic rib abuts against the limiting baffle 5. The one end of the elastic rib is in an arc-shaped end structure, which is beneficial to reducing the frictional resistance when the arc-shaped end structure contacts the limiting baffle 5. The elastic rib is designed to be integrally formed, thereby eliminating the structure of the traditional reset spring. When the elastic rib is pressed against the limiting baffle, the elastic rib will be elastically deformed to provide a reset force for the indicating device 3. This structure simplifies the structure, reduces the cost and enhances the reliability according to the automatic reset design of the elastic rib of the indicating device. The split and closing indication is more accurate and intuitive. This structure is suitable for small-sized isolating switches which need to be frequently operated or used in harsh environments, and is functional and economical.

[0033] The indicating part 33 is provided with an indicating panel 35 away from the one end of the circular shaft part 34 and facing the indicating window 4. The indicating panel 35 is provided with indicating marks. When the indicating device 3 rotates, the indicating panel 35 displays in the indicating window 4. The indicating marks can be different color marks or split and closing style marks arranged on the indicating panel 35. The indicating marks can help the operator to clearly distinguish the split and closing indication state of the isolating switch, thereby enabling the operator to intuitively understand the working condition of the isolating switch.

[0034] In this embodiment, the indicating device is combined with the isolating switch. Figure 1 and Figure 4As shown, the small isolating switch further comprises a handle mechanism for driving the sliding frame 2 to reciprocate, specifically, the handle mechanism comprises an operating handle 7 rotatably arranged on the shell 1, and a torsion spring 8 connected between the operating handle 7 and the shell 1, the operating handle 7 is provided with a driving boss 71 connected with the sliding frame 2, the sliding frame 2 is provided with a driving groove 22 matched with the driving boss 71, the sliding frame 2 is driven to reciprocate by the cooperation of the driving boss 71 and the driving groove 22 when the operating handle 7 rotates, wherein the operating handle 7 and the indicator device 3 are respectively rotatable on both sides of the sliding frame 2, the bottom of the operating handle 7 is provided with a first protrusion, the shell 1 is formed with a second protrusion, and the two end feet of the torsion spring 8 are respectively connected with the first protrusion and the second protrusion; when the operating handle 7 rotates at the closed position, the sliding frame 2 is driven to move downward, the sliding frame 2 drives the movable contact 11 to contact with the static contact 12, and the operating handle 7 is kept at the closed position by the force of the torsion spring 8; correspondingly, when the operating handle 7 rotates at the open position, the sliding frame 2 is driven to move upward, the sliding frame 2 drives the movable contact 11 to separate from the static contact 12, and the operating handle 7 is kept at the open position by the force of the torsion spring.

[0035] As Figure 4 As shown, the sliding frame 2 is provided with a mounting through hole for mounting the movable contact 11, and a bent spring 6 is arranged in the mounting through hole and abuts against the movable contact 11, the movable contact 11 and the mounting through hole are respectively provided with a positioning block 23, and the bent spring 6 is provided with a positioning hole matched with the positioning block 23 to realize positioning and mounting of the bent spring 6 between the mounting through hole and the movable contact 11, so that the bent spring 6 is prevented from falling out of the mounting through hole, and the stability and reliability of the bent spring 6 are ensured. The bent spring 6 and the movable contact 11 are uniformly abutted, and hot spots or arcs caused by local poor contact are avoided, the bent spring 6 can automatically compensate the assembly tolerance or long-term wear between the movable contact and the static contact through elastic deformation, the contact pressure is kept stable, the heating caused by the increase of the contact resistance is reduced, the design of the bent spring connected with the movable contact has the characteristics of elastic self-adaptation, low operation force and high reliability, and the electrical performance and mechanical life of the isolating switch are significantly improved.

[0036] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the application. Based on the above description, other different forms of changes or modifications can be made by those skilled in the art. Here, all the embodiments are not enumerated, and the obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A small-sized isolating switch with indicating function, comprising a housing (1), a sliding frame (2) and an indicating structure, the sliding frame (2) is movably arranged in the housing (1) for driving a moving contact (11) to contact or separate from a stationary contact (12), the indicating structure comprises an indicating device (3) rotatably arranged in the housing and an indicating window (4) opened in the housing; characterized in that: The indicating device (3) comprises a push rod part (31) extending on the movement path of the sliding frame (2), an elastic reset part (32) extending staggeredly with the push rod part (31), and an indicating part (33) movably arranged in the indicating window (4), and the shell (1) is provided with a limiting part limiting the elastic reset part (32); when the push rod part (31) is driven by the sliding frame (2), the indicating device (3) rotates forward and extrudes the elastic reset part (32) to generate elastic deformation; when the push rod part (31) is separated from the sliding frame (2), the indicating device (3) rotates reversely by the elastic force of the elastic reset part (32).

2. The small-size disconnector with indication function according to claim 1, characterized in that: The indicating device (3) comprises a round shaft part (34) rotatably arranged in the shell (1), and the push rod part (31), the elastic reset part (32) and the indicating part (33) are connected to the round shaft part (34) respectively, and the push rod part (31), the elastic reset part (32) and the indicating part (33) extend at an angle with each other with the round shaft part (34) as the center.

3. The small-size disconnector with indication function according to claim 2, characterized in that: The sliding frame (2) is provided with a push block (21) or a push groove for driving the push rod part (31).

4. The small-size disconnector with indication function according to claim 2, characterized in that: The elastic reset part (32) is an elastic rib extending in a bent manner.

5. The small-size disconnector with indication function according to claim 4, characterized in that: The limiting part is a limiting baffle (5) formed in the shell (1), and one end of the elastic rib is abutted against the limiting baffle (5).

6. The small-size disconnector with indication function according to claim 5, characterized in that: One end of the elastic rib is an arc-shaped end structure.

7. The small-size disconnector with indication function according to claim 2, characterized in that: One end of the indicating part (33) away from the round shaft part (34) is provided with an indicating panel (35) facing the indicating window (4), the indicating panel (35) is provided with indicating marks, and the indicating device (3) rotates to drive the indicating panel (35) to display in the indicating window (4).

8. The small-size disconnector with indication function according to any of claims 1-7, characterized in that: The sliding frame (2) is provided with a mounting through hole for mounting the movable contact (11), the mounting through hole is provided with a bent elastic sheet (6) abutting against the movable contact (11), the movable contact (11) and the mounting through hole are respectively provided with a positioning block (23), and the bent elastic sheet (6) is provided with a positioning hole limiting the positioning block (23).

9. The small-size disconnector with indication function according to claim 1, characterized in that: Further comprising a handle mechanism for driving the sliding frame (2) to move back and forth, the handle mechanism comprises an operation handle (7) rotatably arranged in the shell (1), and a torsion spring (8) connected between the operation handle (7) and the shell (1), the operation handle (7) is provided with a driving boss (71) connected with the sliding frame (2), and the sliding frame (2) is provided with a driving groove (22) matched with the driving boss (71).

10. The small-size disconnector with indication function according to claim 9, characterized in that: The operation handle (7) and the indicating device (3) are respectively rotatably arranged on both sides of the sliding frame (2), the bottom of the operation handle (7) is provided with a first protrusion, the shell (1) is formed with a second protrusion, and the two end feet of the torsion spring (8) extending staggeredly are connected with the first protrusion and the second protrusion respectively.

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