Miniature isolating switch

Abstract

The utility model discloses a small-sized isolating switch. An indicating surface of an indicating piece comprises a second indicating surface corresponding to an opening state and a first indicating surface corresponding to a closing state; the indicating piece is provided with a first driven part and a second driven part, and the contact support is provided with a driving part; when the contact support slides along a first direction, the driving part pushes the first driven part to enable the indicating piece to rotate along a first rotating direction, and the first indicating surface is exposed in the indicating hole; when the contact supports sliding in the second direction, the driving part pushes the second driven part to enable the indicating piece to rotate in the second rotating direction, and the second indicating surface is exposed in the indicating hole; a pressure spring is further included, the pressure spring abuts against the indicating piece, and when the indicating piece rotates in the first rotating direction, the pressure spring is compressed; when the indicating piece rotates towards the second rotation direction, the spring force is provided; the method has the effect of stable indication.

Description

Technical Field

[0001] This application relates to a small disconnect switch. Background Technology

[0002] The structure of small disconnect switches with independent indicators is not uncommon. The basic idea is to use a linkage structure to change the position of the indicator, thereby achieving different indications.

[0003] For example, CN218631721U discloses a disconnecting switch with an indicating function, which includes a handle, a connecting rod, a bracket, and a contact indicator. The handle is connected to the connecting rod, the connecting rod is connected to the bracket, and the bracket has a driving part that contacts the contact indicator. In this indicating structure, the handle drives the bracket to move, while the driving part pushes different parts of the contact indicator, so that the contact indicator presents different indications. Even the indication of opening is entirely achieved by the driving part pushing the contact indicator.

[0004] However, the above structure has some drawbacks. There may be jamming when switching from closing to opening, so the structure is not ideal. Summary of the Invention

[0005] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and to provide a small disconnect switch.

[0006] This application provides: a miniature disconnecting switch, comprising a housing, a handle, a connecting rod, a contact support, and an indicator; the handle is rotatably disposed relative to the housing, and the contact support is slidably disposed relative to the housing; the handle and the contact support are connected by a connecting rod, such that the rotation of the handle is converted into the sliding of the contact support; an indicator hole is provided on the housing, and the indicator is located below the indicator hole and rotatably disposed relative to the housing; the indicator surface of the indicator includes a second indicator surface corresponding to the open state and a first indicator surface corresponding to the closed state; the indicator has a first driven part and a second driven part, and the contact support has a driving part; when the contact support slides along a first direction, the driving part pushes the first driven part to cause the indicator to rotate along a first rotation direction, and the first indicator surface is exposed in the indicator hole; when the contact support slides in a second direction, the driving part pushes the second driven part to cause the indicator to rotate along a second rotation direction, and the second indicator surface is exposed in the indicator hole; it also includes a compression spring, which abuts against the indicator, and is compressed when the indicator rotates along the first rotation direction; and provides spring force when the indicator rotates in the second rotation direction.

[0007] In some embodiments of this application, the outer shell includes a first half-shell and a second half-shell, which are spliced ​​together; a first sliding area is provided on the first half-shell, and a second sliding area is provided on the second half-shell, the first sliding area and the second sliding area together form the space required for the contact to support sliding; a first abutting post is provided around the first sliding area, and a second abutting post is provided around the second sliding area, the first abutting post and the second abutting post abutting each other.

[0008] In some embodiments of this application, the first half-shell is provided with two spaced-apart first guide ribs, and the second half-shell is provided with two spaced-apart second guide ribs; the two first guide ribs together form a first sliding area, and the two second guide ribs together form a second sliding area, and the contact supports sliding along the first guide ribs and the second guide ribs during the sliding process; the first abutting post is provided on the first guide rib, and the second abutting post is provided on the second guide rib.

[0009] In some embodiments of this application, the contact support includes a first support member and a second support member; the first support member and the second support member are two independently formed components, which are fastened together by a fastening structure; a connecting rod connects the second support member and the handle, and a driving part is disposed on the first support member; it also includes a movable contact bridge and a contact spring, the movable contact bridge is disposed on the first support member, one end of the contact spring abuts against the movable contact bridge, and the other end abuts against the second support member.

[0010] In some embodiments of this application, two stationary contacts are also included, located below the moving contact bridge; the first direction is the direction in which the moving contact bridge moves toward the stationary contacts, and the second direction is the direction in which the moving contact bridge moves away from the stationary contacts; when the contact support slides along the first direction, the moving contact bridge gradually approaches the stationary contacts and eventually contacts both stationary contacts simultaneously; the first support member includes a main body and four support parts; the main body is a hollow structure, and the moving contact bridge and contact spring are disposed in the hollow part of the main body; the four support parts are all connected to the lower part of the main body and are respectively disposed around the periphery of the part of the moving contact bridge used to cooperate with the stationary contacts.

[0011] In some embodiments of this application, the first support member includes a main body and a drive part; the main body is a hollow structure, and the moving contact bridge and the contact spring are disposed in the hollow part of the main body; the drive part is disposed above the main body, and the drive part includes a rod extending in a second direction and a drive protrusion extending in the radial direction of the rod, the drive protrusion being used to cooperate with the first driven part and the second driven part.

[0012] In some embodiments of this application, the indicator includes a spring abutment portion and an indicator portion; a compression spring abuts against the spring abutment portion, and a first indicator surface and a second indicator surface are both located on the indicator portion; the spring abutment portion and the indicator portion are located on both sides of the rotation center of the indicator.

[0013] In some embodiments of this application, the lever arm from the first driven part to the rotation center of the indicator is the first lever arm, the lever arm from the second driven part to the rotation center of the indicator is the second lever arm, and the lever arm from the contact point between the compression spring and the spring contact part to the rotation center of the indicator is the third lever arm; the third lever arm is greater than the first lever arm and the second lever arm.

[0014] In some embodiments of this application, the housing has a first terminal cavity and a mounting cavity, with a partition wall between the mounting cavity and the first terminal cavity; a handle, a connecting rod, a contact support, and an indicator are mounted in the mounting cavity; and a compression spring abuts against the spring abutment and the partition wall.

[0015] In some embodiments of this application, spring mounting portions are provided on both the spring abutment portion and the partition wall, wherein the spring mounting portion is a groove and / or a protrusion.

[0016] The advantages of this application compared to the prior art are:

[0017] The above structure utilizes the energy stored in the compression spring to provide a certain spring force for the indicator to rotate towards the open indicator. This structure can reduce the impact of jamming and ensure accurate indication.

[0018] The structure of the compression spring is relatively simple, its installation structure is easy to design, and assembly is very convenient. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A perspective view of a miniature disconnector switch according to an embodiment of this application is shown;

[0021] Figure 2 An exploded view of a miniature disconnector according to an embodiment of this application is shown;

[0022] Figure 3 A schematic diagram of the first half-shell in an embodiment of this application is shown;

[0023] Figure 4 A schematic diagram of the internal components of the miniature disconnector switch in the open state according to an embodiment of this application is shown;

[0024] Figure 5 A schematic diagram of the internal components of the miniature disconnect switch in the closed state according to an embodiment of this application is shown;

[0025] Figure 6 A schematic diagram of an indicator in a miniature disconnect switch according to an embodiment of this application is shown;

[0026] Figure 7 A schematic diagram of the contact support and moving contact bridge in a miniature disconnector according to an embodiment of this application is shown;

[0027] Figure 8 A schematic diagram of the contact support and the second half-shell in a miniature disconnector according to an embodiment of this application is shown;

[0028] Figure 9 A schematic diagram of the contact support and the first half-shell in a miniature disconnector according to an embodiment of this application is shown. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. Example

[0034] like Figure 1-9 As shown, an embodiment of this application is a small disconnect switch, which can be a single-pole, two-pole, three-pole, or four-pole structure. Each pole includes a housing 100, a handle 300, a connecting rod 900, a contact support 200, an indicator 700, a moving contact, a contact spring 500, and a stationary contact 600.

[0035] The outer shell 100 is formed by a first half-shell 101 and a second half-shell 102. The first half-shell 101 and the second half-shell 102 are spliced ​​together and then fastened by a fastening structure, which is riveting, but screws can also be used for fastening.

[0036] The internal space of the outer casing 100 is divided into a first terminal cavity 100a, a mounting cavity 100b, and a second terminal cavity 100c. The first terminal cavity 100a and the mounting cavity 100b are separated by a partition wall 103, and the second terminal cavity 100c and the mounting cavity 100b are also separated by a partition wall 103. Here, since the outer casing 100 is formed by the first half-shell 101 and the second half-shell 102, the first terminal cavity 100a, the mounting cavity 100b, and the second terminal cavity 100c are also formed by splicing the first half-shell 101 and the second half-shell 102 together.

[0037] The handle 300, connecting rod 900, contact support 200, indicator 700, moving contact, contact spring 500 and other components are all located in the mounting cavity 100b.

[0038] The mounting cavity 100b includes a sliding region for the contact to slide. Therefore, the first half-shell 101 has a first sliding region 100b1, and the second half-shell 102 has a second sliding region 100b2. The first sliding region 100b1 and the second sliding region 100b2 together constitute the sliding region.

[0039] A first abutment post 101a is provided around the first sliding area 100b1, and a second abutment post 102a is provided around the second sliding area 100b2. After the first half-shell 101 and the second half-shell 102 are installed, the first abutment post 101a and the second abutment post 102a abut against each other. In this embodiment, there are three first abutment posts 101a and three second abutment posts 102a. The mutual abutment of these posts can stabilize the space of the sliding area, which is beneficial to the sliding of the contact support 200. The reason for this effect is that the outer shell 100 is made of plastic. The existing structure lacks abutment posts, and the deformation of the middle part of the outer shell 100 is large, which reduces the space of the sliding area and causes a jamming phenomenon when the contact supports the sliding of 200. The design of the abutment posts can reduce the deformation of the outer shell 100, making the sliding of the contact support 200 smoother.

[0040] For the first sliding region 100b1 and the second sliding region 100b2, two spaced-apart first guide ribs 101b are provided on the first half-shell 101, and two spaced-apart second guide ribs 102b are provided on the second half-shell 102. The two first guide ribs 101b together form the first sliding region 100b1, and the two second guide ribs 102b together form the second sliding region 100b2. The contact support 200 slides along the first guide ribs 101b and the second guide ribs 102b during the sliding process. This structure facilitates guiding the sliding of the contact support 200. Simultaneously, a first abutment post 101a is provided on the first guide rib 101b, and a second abutment post 102a is provided on the second guide rib 102b. This structure facilitates injection molding.

[0041] The handle 300 is rotatably configured along with both the first half-shell 101 and the second half-shell 102. Part of the handle 300 extends out of the outer shell 100 for user operation, allowing the user to operate the disconnect switch via the handle 300.

[0042] The contact support 200 is slidably disposed within the housing 100. It includes independently formed first support 201 and second support 202. The first support 201 and second support 202 are isomorphically fastened together by a fastening structure, which can be a snap-fit, an interference fit, or a screw fastening.

[0043] The second support 202 is connected to one end of the connecting rod 900, and the other end of the connecting rod 900 is connected to the handle 300. In this way, the rotation of the handle 300 can be converted into the sliding of the contact support 200.

[0044] The first support member 201 includes a drive unit 201a, a main body 201b, and four support units 201c.

[0045] The movable contact bridge 400 is disposed on the main body 201b of the first support member 201, and one end of the contact spring 500 abuts against the movable contact bridge 400, and the other end abuts against the second support member 202. Here, the main body 201b is a hollow structure, and the movable contact bridge 400 and the contact spring 500 are disposed in the hollow part of the main body 201b.

[0046] There are two stationary contacts 600, fixed to the housing 100, and arranged below the moving contact bridge 400. Thus, when the contact support 200 moves the moving contact bridge 400 in the first direction, the moving contact bridge 400 gradually approaches the stationary contacts 600, eventually making contact with both stationary contacts 600 simultaneously. When the contact support 200 moves the moving contact bridge 400 in the second direction, the moving contact bridge 400 separates from the two stationary contacts 600.

[0047] The four support portions 201c of the first support member 201 are located below the main body portion 201b and are respectively arranged around the moving contact of the moving contact bridge 400 (the moving contact is used to cooperate with the stationary contact 600), which ensures that space is reserved for the contact between the two.

[0048] The drive portion 201a of the first support member 201 is located above the main body portion 201b. The drive portion 201a includes a rod portion 201a1 extending in a second direction and a drive protrusion 201a2 extending in a radial direction along the rod portion 201a1. Here, the drive portion 201a is used to cooperate with the indicator 700 to drive the indicator 700 to rotate.

[0049] The housing 100 has an indicator hole 104, and the indicator 700 is located entirely below the indicator hole 104.

[0050] The indicator 700 includes an indicator part 700a, a spring abutment part 700b, a first driven part 700c, a second driven part 700d, and a rotating part 700e.

[0051] The rotating part 700e is used to form a rotatable connection with the housing 100 (rotatable within the mounting cavity 100b).

[0052] The indicator 700a includes a first indicator surface 700a1 and a second indicator surface 700a2, which correspond to the closed state and the open state, respectively. The indicator 700a is located directly below the indicator hole 104 and is exposed in the indicator hole 104 through different indicator surfaces to present different status indications.

[0053] The first driven part 700c and the second driven part 700d are both connected to the rotating part 700e, which is offset from the rotation center of the rotating part 700e.

[0054] The driving protrusion 201a2 slides between the first driven portion 700c and the second driven portion 700d. When the driving protrusion 201a2 (contact support 200) slides in the first direction, it pushes the first driven portion 700c, causing the indicator 700 to rotate in the first rotation direction until the first indicator surface 700a1 is exposed in the indicator hole 104. Conversely, when the driving protrusion 201a2 (contact support 200) slides in the second direction, it pushes the second driven portion 700d, causing the indicator 700 to rotate in the second rotation direction until the second indicator surface 700a2 is exposed in the indicator hole 104.

[0055] The spring abutment 700b is connected to the rotating part 700e, and the compression spring 800 abuts against the spring abutment 700b and the partition wall 103 (the partition wall 103 between the mounting cavity 100b and the first terminal cavity 100a). When the indicator 700 is pushed to rotate in the first rotation direction (corresponding to closing), the compression spring 800 will compress and store energy (the spring force here is less than the force exerted by the contact support 200 on the indicator 700). When the indicator 700 is pushed to rotate in the second rotation direction (corresponding to opening), the compression spring 800 will apply spring force. At this time, since the driving protrusion 201a2 moves towards the second driven part 700d, the spring force can assist the indicator 700 to rotate in the opening indication direction, which is beneficial for opening indication.

[0056] The spring contact part 700b and the indicator part 700a are basically completely opposite in arrangement, that is, they are located on both sides of the rotation center of the rotating part 700e, and are basically arranged at 180°.

[0057] The lever arm from the first driven part 700c to the rotation center of the indicator 700 is the first lever arm L1, the lever arm from the second driven part 700d to the rotation center of the indicator 700 is the second lever arm L2, and the lever arm from the contact point between the compression spring 800 and the spring abutment part 700b to the rotation center of the indicator 700 is the third lever arm L3. Here, the third lever arm L3 is greater than the first lever arm L1 and the second lever arm L2. This lever arm arrangement allows the smaller compression spring 800 to achieve a good spring force effect, and the smaller compression spring 800 is also easier to install.

[0058] Both the spring abutment 700b and the partition wall 103 are provided with spring mounting portions 700b1 for mounting the compression spring 800. Here, the spring mounting portion 700b1 on the spring abutment 700b is a protrusion, while the spring mounting portion 700b1 on the partition wall 103 is a recess. Of course, there are many specific combinations of these two spring mounting portions 700b1; any protrusion or recess is acceptable.

[0059] Although the above example illustrates the structure of a single-pole disconnector, it can also be applied to 2P-4P disconnectors.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A miniature disconnect switch, comprising a housing, a handle, a connecting rod, a contact support, and an indicator; the handle is rotatably mounted relative to the housing, and the contact support is slidably mounted relative to the housing; the handle and the contact support are connected by a connecting rod, such that rotation of the handle is converted into sliding of the contact support; an indicator hole is provided on the housing, and the indicator is located below the indicator hole and rotatably mounted relative to the housing: characterized in that: The indicator includes a second indicator surface corresponding to the open state and a first indicator surface corresponding to the closed state; the indicator has a first driven part and a second driven part, and the contact support has a driving part; when the contact support slides in a first direction, the driving part pushes the first driven part to rotate the indicator in a first rotation direction, exposing the first indicator surface in the indicator hole; when the contact support slides in a second direction, the driving part pushes the second driven part to rotate the indicator in a second rotation direction, exposing the second indicator surface in the indicator hole; it also includes a compression spring, which abuts against the indicator, and is compressed when the indicator rotates in the first rotation direction; and provides spring force when the indicator rotates in the second rotation direction.

2. A miniature disconnect switch according to claim 1, characterized in that: The outer shell includes a first half-shell and a second half-shell, which are spliced ​​together. A first sliding area is provided on the first half-shell, and a second sliding area is provided on the second half-shell. The first sliding area and the second sliding area together form the space required for the contact to support sliding. A first abutting post is provided around the first sliding area, and a second abutting post is provided around the second sliding area. The first abutting post and the second abutting post abut against each other.

3. A miniature disconnect switch according to claim 2, characterized in that: The first half-shell is provided with two spaced first guide ribs, and the second half-shell is provided with two spaced second guide ribs; the two first guide ribs together form a first sliding area, and the two second guide ribs together form a second sliding area. The contact supports sliding along the first guide ribs and the second guide ribs during the sliding process; the first abutting post is provided on the first guide rib, and the second abutting post is provided on the second guide rib.

4. A miniature disconnect switch according to claim 1, characterized in that: The contact support includes a first support member and a second support member; the first support member and the second support member are two independently formed parts, which are fastened together by a fastening structure; a connecting rod connects the second support member and the handle, and the driving part is disposed on the first support member; it also includes a movable contact bridge and a contact spring, the movable contact bridge is disposed on the first support member, one end of the contact spring abuts against the movable contact bridge, and the other end abuts against the second support member.

5. A miniature disconnect switch according to claim 4, characterized in that: It also includes two stationary contacts located below the moving contact bridge; the first direction is the direction in which the moving contact bridge moves toward the stationary contacts, and the second direction is the direction in which the moving contact bridge moves away from the stationary contacts; when the contact support slides along the first direction, the moving contact bridge gradually approaches the stationary contacts and eventually contacts both stationary contacts simultaneously; the first support member includes a main body and four support parts; the main body is a hollow structure, and the moving contact bridge and contact spring are disposed in the hollow part of the main body; All four support sections are connected to the bottom of the main body and are located around the part of the moving contact bridge that mates with the stationary contact.

6. A miniature disconnect switch according to claim 4, characterized in that: The first support component includes a main body and a drive unit; the main body is a hollow structure, and the moving contact bridge and contact spring are disposed in the hollow part of the main body. The drive unit is disposed above the main body and includes a rod extending in a second direction and a drive protrusion extending in the radial direction of the rod. The drive protrusion is used to cooperate with the first driven part and the second driven part.

7. A miniature disconnect switch according to claim 1, characterized in that: The indicator includes a spring abutment and an indicator; the compression spring abuts against the spring abutment, and the first indicator surface and the second indicator surface are both located on the indicator; the spring abutment and the indicator are located on both sides of the rotation center of the indicator.

8. A miniature disconnector according to claim 7, characterized in that: The lever arm from the first driven part to the rotation center of the indicator is the first lever arm, the lever arm from the second driven part to the rotation center of the indicator is the second lever arm, and the lever arm from the contact point between the compression spring and the spring contact part to the rotation center of the indicator is the third lever arm; the third lever arm is greater than the first lever arm and the second lever arm.

9. A miniature disconnect switch according to claim 7, characterized in that: The housing has a first terminal cavity and a mounting cavity, with a partition wall between the mounting cavity and the first terminal cavity; the handle, connecting rod, contact support and indicator are installed in the mounting cavity; the compression spring abuts against the spring abutment part and the partition wall.

10. A miniature disconnect switch according to claim 9, characterized in that: Both the spring abutment and the partition wall are provided with spring mounting parts, which are grooves and / or protrusions.

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