Handle assembly of rotary disconnecting switch and rotary disconnecting switch

Abstract

The handle assembly of the rotary disconnecting switch comprises a base and a handle arranged on the base in a pivoted mode, the handle is provided with a rotation limiting part, the base is provided with an opening limiting part and a closing limiting part which are matched with the rotation limiting part, and the rotation limiting part is limited to rotate between the opening limiting part and the closing limiting part. And the handle is limited to rotate between an opening position and a closing position. The rotary disconnecting switch comprises an operating mechanism and a switch unit, one end of the operating mechanism serves as a driving end and is in driving connection with the switch unit, the other end of the operating mechanism serves as an operating end, the rotary disconnecting switch further comprises the handle assembly, and the handle of the handle assembly is connected with the operating end of the operating mechanism. According to the handle assembly and the rotary disconnecting switch, the rotation limiting part of the handle is matched with the opening limiting part and the closing limiting part of the base to limit the handle at the opening position and the closing position, fool-proof limiting design is adopted, operation is simple, the rotation angle of the handle is effectively controlled, and the contact reliability of the movable contact and the static contact is improved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a handle assembly of a rotary isolating switch and a rotary isolating switch. Background Art

[0002] With the rapid development of economy, people's living standard has been significantly improved, and they have a more comprehensive understanding of electricity safety. In order to increase the safety of electricity use, an isolating switch is usually connected in the circuit, so that when the electrical equipment is repaired, the isolating switch can cut off the power supply, isolate it from the live parts, and maintain an effective isolation distance.

[0003] The existing isolating switches on the market cannot effectively control the rotation angle of the handle, and may easily lead to unreliable contact between the moving and static contacts due to excessive or insufficient rotation, and improper installation, thus affecting product performance. Summary of the invention

[0004] The utility model aims to overcome at least one defect of the prior art and provides a handle assembly of a rotary isolating switch and a rotary isolating switch.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A handle assembly for a rotary isolating switch comprises a base and a handle pivotally arranged on the base, the handle is rotated to open or close the rotary isolating switch, the handle is provided with a rotation limit portion, the base is provided with an opening limiting portion and a closing limiting portion which cooperate with the rotation limit portion to limit the rotation angle of the handle, the rotation limit portion of the handle is limited to rotate between the opening limiting portion and the closing limiting portion, so that the handle is limited to rotate between the opening position and the closing position.

[0007] Optionally, the rotation limiting portion is a raised structure integrally provided on the handle, and a limiting notch corresponding to the rotation limiting portion is provided on the base, and the limiting notch has two opposite side walls serving as an opening limiting portion and a closing limiting portion.

[0008] Optionally, the handle includes a grip and a handle shaft, one end of the handle shaft is connected to the handle, and the other end of the handle shaft is a mounting end, the mounting end is provided with the rotation limiting portion, and the base is provided with a shaft hole that rotatably cooperates with the mounting end, and the mounting end is rotatably inserted in the shaft hole of the base.

[0009] Optionally, a supporting step for supporting the mounting end is provided in the rotating shaft hole, and the supporting step is arranged around the side wall of the rotating shaft hole and is provided with a limiting notch to form a relative opening limiting portion and a closing limiting portion, and the rotation limiting portion is a protruding structure formed along the axial protrusion on the mounting end, and the mounting end is placed on the supporting step and slidably cooperates with the supporting step, and the rotation limiting portion is placed in the limiting notch on the supporting step and slidably cooperates with the support step.

[0010] Optionally, the rotation limiting portion is an arc-shaped convex rib structure that slidably cooperates with the side wall of the shaft hole.

[0011] Optionally, the handle further comprises two handle wings symmetrically arranged on radial sides of the handle rotating shaft, the handle and the two handle wings are vertically connected to form a T-shaped structure, the handle wings are parallel to the base, and side flanges protruding toward the base are provided on the circumferential sides.

[0012] Optionally, an annular groove surrounding the rotating shaft hole is opened on the side of the base facing the handle assembly installation position for installing a first sealing ring, and the annular side wall of the annular groove is provided with a protruding extrusion portion. The first sealing ring is arranged in the annular groove and is squeezed and limited by the extrusion portion.

[0013] Optionally, it also includes a connecting shaft, one end of which is connected to the handle, and the other end of the connecting shaft passes through the rotating shaft hole of the base, and is used to be linked to the operating end of the operating mechanism. A second sealing ring is arranged between the outer wall of the connecting shaft and the side wall of the rotating shaft hole, and the outer wall of the connecting shaft is provided with an assembly groove for assembling the second sealing ring.

[0014] Optionally, the handle and the connecting shaft are separately arranged, and the end of the connecting shaft connected to the handle is provided with a first screw hole, and the other end of the connecting shaft is provided with a first accommodating groove for inserting the operating end of the operating mechanism, and the handle is provided with a second accommodating groove for accommodating one end of the connecting shaft, and the second accommodating groove is provided with a second screw hole that passes through the handle, and the fixing screw fixes the handle to the connecting shaft through the second screw hole and the first screw hole; the end of the connecting shaft provided with the first accommodating groove is radially provided with a connecting hole that passes through the connecting shaft and is connected to the first accommodating groove, which is used to be connected to the operating end of the operating mechanism through a connecting member.

[0015] A rotary isolating switch comprises an operating mechanism and a switch unit driven by the operating mechanism, wherein one end of the operating mechanism is connected to the switch unit as a driving end, and the other end of the operating mechanism is extended out of the housing of the operating mechanism as an operating end, and is used to drive the operating mechanism to move. The rotary isolating switch also comprises a handle assembly of any one of the above technical solutions, wherein the handle of the handle assembly is connected to the operating end of the operating mechanism.

[0016] The handle assembly and the rotary isolating switch of the utility model limit the handle in the open position and the closed position by the rotation limit part of the handle cooperating with the open limit part and the close limit part of the base respectively. The foolproof limit design is simple to operate. It only needs to turn the handle to the open direction or the close direction to the bottom, which effectively controls the rotation angle of the handle, prevents the handle from rotating excessively or insufficiently, and improves the reliability of the contact between the moving and static contacts.

[0017] In addition, a raised rotation limit portion cooperates with two opposite side walls of a limiting notch to form a rotation angle limiting structure of the handle. The structure is simple, so that the rotation angle of the handle can be effectively and reliably controlled. The rotation limit portion on the handle and the limiting notch on the base are both designed as an integrated whole, which reduces parts and facilitates installation.

[0018] In addition, an annular groove surrounding the shaft hole is provided on the side of the base facing the handle assembly installation position for installing a first sealing ring, and a second sealing ring is arranged between the outer wall of the connecting shaft and the side wall of the shaft hole to improve the sealing between the handle assembly and the side wall of the cabinet after installation and the sealing inside and outside the shaft hole.

[0019] In addition, the first sealing ring is squeezed and limited in the annular groove by the extrusion part. By increasing the local friction between the extrusion part and the sealing ring, the sealing ring can be prevented from falling off when not in installation, which is beneficial to ensure the reliability of the overall coordination of the handle assembly during transportation and transfer, and improve the sealing between the handle assembly and the side wall of the cabinet after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the handle assembly of the utility model;

[0021] Figure 2 It is a side sectional view of the handle assembly of the utility model;

[0022] Figure 3 It is a bottom cross-sectional view of the handle assembly of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the handle of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the base of the utility model;

[0025] Handle 1; rotation limit part 11; handle 12; handle shaft 13; handle wing 14; side flange 15; second accommodating groove 16; base 2; opening limit part 21; closing limit part 22; shaft hole 23; support step 24; limiting notch 25; first annular side wall 26; second annular side wall 27; first clamping part 28; second clamping part 29; first sealing ring 3; connecting shaft 4; assembly groove; first accommodating groove 41; connecting hole 42; second sealing ring 5; fixing screw 6. DETAILED DESCRIPTION

[0026] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the handle assembly of the rotary isolating switch and the rotary isolating switch of the present invention. The handle assembly of the rotary isolating switch and the rotary isolating switch of the present invention are not limited to the description of the following embodiments.

[0027] The rotary isolating switch of this embodiment includes an operating mechanism and at least one switch unit. The operating mechanism and the switch unit are arranged in a stacked manner. The operating mechanism is connected to the switch unit to drive the switch unit to be turned on or off. The switch unit includes a switch unit housing and a contact system and an arc extinguishing system arranged in the switch unit housing and used in conjunction with each other. The contact system includes a moving contact mechanism pivotally arranged on the housing of the conductive device and a static contact cooperating with the moving contact mechanism. One end of the operating mechanism is connected to the moving contact mechanism of the switch unit as a driving end, so that the moving contact mechanism and the static contact are closed or disconnected to realize the closing or opening of the rotary isolating switch. The moving contact mechanisms of adjacent switch units are connected in a driving manner. The switch unit is used to control the power supply to the load. The other end of the operating mechanism extends out of the housing of the operating mechanism as an operating end to drive the operating mechanism to operate.

[0028] like Figure 1-3 As shown, the rotary isolating switch of this embodiment also includes a handle assembly. The handle 1 of the handle assembly is connected to the operating end of the operating mechanism. Usually, the rotary isolating switch is placed in a cabinet for use. The operating end of the operating mechanism extends out of the cabinet, and the mounting position of the handle assembly is arranged at the outer wall of the cabinet corresponding to the operating end of the operating mechanism. The handle assembly of this embodiment includes a base 2 and a handle 1 pivotally arranged on the base 2. The handle 1 rotates to open or close the rotary isolating switch. The handle 1 is provided with a rotation limit portion 11. The base 2 is provided with an opening limiting portion 21 and a closing limiting portion 22 for cooperating with the rotation limit portion 11 to limit the rotation angle of the handle 1. The rotation limit portion 11 of the handle 1 is limited to rotate between the opening limiting portion 21 and the closing limiting portion 22, so that the handle 1 is limited to rotate between the opening position and the closing position. Preferably, the rotatable angle of the handle 1 is within 110°. Of course, the rotatable angle of the handle 1 can also be in other angle ranges. As Figure 3As shown, during the rotation process of the handle 1, when the rotation limit portion 11 of the handle 1 rotates clockwise to the opening limit portion 21, the handle 1 is limited to the opening position, and the handle 1 can no longer continue to rotate clockwise, and the rotary isolating switch completes the opening; when the rotation limit portion 11 of the handle 1 rotates counterclockwise to the closing limit portion 22, the handle 1 is limited to the closing position, and the handle 1 can no longer continue to rotate counterclockwise, and the rotary isolating switch completes the opening. The handle assembly and the rotary isolating switch of the rotary isolating switch of this embodiment limit the handle 1 to the opening position and the closing position through the rotation limit portion 11 of the handle 1 respectively cooperating with the opening limit portion 21 and the closing limit portion 22 of the base 2, and the foolproof limit design is simple to operate. It only needs to turn the handle 1 to the opening direction or the closing direction to the bottom, which effectively controls the rotation angle of the handle, prevents the handle from rotating excessively or insufficiently, and improves the reliability of the contact between the moving and static contacts.

[0029] like Figure 3-5 As shown, the matching structure between the rotation limiting part 11 and the opening limiting part 21 and the closing limiting part 22 of this embodiment, the rotation limiting part 11 is a protruding structure integrally provided on the handle 1, and the base 2 is provided with a limiting notch 25 corresponding to the rotation limiting part 11, and the limiting notch 25 has two opposite side walls, which are used as the opening limiting part 21 and the closing limiting part 22. The rotation angle limiting structure of the handle 1 is formed by the cooperation of the protruding rotation limiting part 11 and the two opposite side walls of the limiting notch 25, which has a simple structure, so that the rotation angle of the handle 1 can be effectively and reliably controlled, and the rotation limiting part 11 on the handle 1 and the limiting part on the base 2 are both integrally designed, so as to avoid the problem of the inability to reliably control the rotation angle of the handle 1 caused by the installation problem of the limiting part, reduce parts, and facilitate installation.

[0030] like Figure 4 As shown, the specific structure of the handle 1 of this embodiment is that the handle 1 is an integrally formed structure, including a handle 12 and a handle shaft 13. The handle 12 is a straight-line hollow shell structure. One end of the handle shaft 13 is connected to the inner wall of the hollow shell of the handle 12. The other end of the handle shaft 13 is a mounting end. The mounting end is provided with the rotation limiter 11. The base 2 is provided with a shaft hole 23 that is rotatably matched with the mounting end of the handle shaft 13. The mounting end of the handle shaft 13 is rotatably inserted into the shaft hole 23 of the base 2. The handle 1 of this embodiment also includes two handle wings 14 symmetrically arranged on both radial sides of the handle shaft 13. The handle wings 14 are similar to a semicircular plate structure. The handle 12 is vertically connected to the two handle wings 14 to form a T-shaped structure. The handle wings 14 are parallel to the base 2 and are provided with side flanges 15 protruding toward the base 2 on the circumferential side. One end of the two handle wings 14 is extended and connected through the side flange 15, and the other side is spaced apart. The handle 1 of this embodiment has a simple structure, is easy to shape, and is convenient for rotation operation.

[0031] like Figure 3-5 As shown, a specific embodiment of the matching structure between the rotation limiting part 11 of this embodiment and the opening limiting part 21 and the closing limiting part 22, the rotation shaft hole 23 is provided with a support step 24 for supporting the mounting end of the handle shaft 13, the support step 24 is arranged around the side wall of the shaft hole 23 and is provided with a limiting notch 25, so as to form a relative opening limiting part 21 and closing limiting part 22, the rotation limiting part 11 is a convex structure formed by axial protrusion on the mounting end of the handle shaft 13, the mounting end of the handle shaft 13 is placed on the support step 24 and slidably cooperates with the support step 24, the rotation limiting part 11 is placed in the limiting notch 25 on the support step 24 and slidably cooperates with the support step 24. Preferably, the rotation limiting part 11 is an arc-shaped convex rib structure that slidably cooperates with the side wall of the shaft hole 23. The limiting notch 25 and the rotation limiting portion 11 are concave-convex structures in the axial direction of the handle shaft 13, so that the rotation angle limiting structure of the handle 1 and the rotation structure of the handle 1 will not affect and restrict each other, thereby improving the stability and reliability of the rotation angle limitation of the handle 1.

[0032] like Figure 1-2 As shown, the installation sealing structure of the base 2 of this embodiment, the base 2 is provided with an annular groove surrounding the shaft hole 23 on the side facing the handle assembly installation position, which is used to install the first sealing ring 3, and the annular side wall of the annular groove is provided with a protruding extrusion portion, and the first sealing ring 3 is arranged in the annular groove and is squeezed and limited by the extrusion portion. Specifically, the annular groove includes a first annular side wall 26 and a second annular side wall 27 that are spaced and opposite to each other, and the extrusion portion includes a first pressing portion 28 and a second pressing portion 29, the first pressing portion 28 is arranged on the first annular side wall 26 and the second annular side wall 27, and the second pressing portion 29 is arranged on the second annular side wall 27. The sealing ring is squeezed and limited in the annular groove by the extrusion portion, and by increasing the local friction between the extrusion portion and the sealing ring, the sealing ring can be prevented from falling off at the non-installation time, which is conducive to ensuring the reliability of the overall matching of the handle assembly during transportation and transfer, and improving the sealing between the handle assembly and the cabinet side wall after installation.

[0033] like Figure 1-2As shown, the handle assembly of this embodiment also includes a connecting shaft 4, one end of which is connected to the handle 1, and the other end of the connecting shaft 4 passes through the rotating shaft hole 23 of the base 2, and is used to be linked with the operating end of the operating mechanism. A second sealing ring 5 is arranged between the outer wall of the connecting shaft 4 and the side wall of the rotating shaft hole 23, and an assembly groove for assembling the second sealing ring 5 is opened on the outer wall of the connecting shaft 4 to improve the sealing inside and outside of the rotating shaft hole 23. Furthermore, the handle 1 and the connecting shaft 4 are separately arranged, and the end of the connecting shaft 4 connected to the handle 1 is provided with a first screw hole, and the other end of the connecting shaft 4 is provided with a first accommodating groove 41 for inserting the operating end of the operating mechanism, and the handle 1 is axially provided with a second accommodating groove 16 for accommodating one end of the connecting shaft 4 along the handle shaft 13, and the second accommodating groove 16 is provided with a second screw hole penetrating the handle 1, and the fixing screw 6 fixes the handle 1 to the connecting shaft 4 through the second screw hole and the first screw hole; the end of the connecting shaft 4 provided with the first accommodating groove 41 is radially provided with a connecting hole 42 penetrating the connecting shaft 4 and communicating with the first accommodating groove 41, which is used to be connected to the operating end of the operating mechanism through a connecting piece.

[0034] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0035] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A handle assembly for a rotary disconnector, comprising a base (2) and a handle (1) pivotally arranged on the base (2), wherein the handle (1) is rotated to open or close the rotary disconnector, characterized in that: The handle (1) is provided with a rotation limiting portion (11); the base (2) is provided with an opening limiting portion (21) and a closing limiting portion (22) which cooperate with the rotation limiting portion (11) and are used to limit the rotation angle of the handle (1); the rotation limiting portion (11) of the handle (1) is limited to rotate between the opening limiting portion (21) and the closing limiting portion (22), so that the handle (1) is limited to rotate between an opening position and a closing position.

2. The handle assembly of the rotary isolating switch according to claim 1, characterized in that: The rotation limiting portion (11) is a protruding structure integrally provided on the handle (1), and a limiting notch (25) corresponding to the rotation limiting portion (11) is provided on the base (2), and the limiting notch (25) has two opposite side walls, which serve as the opening limiting portion (21) and the closing limiting portion (22).

3. The handle assembly of the rotary isolating switch according to claim 1, characterized in that: The handle (1) comprises a grip (12) and a handle shaft (13); one end of the handle shaft (13) is connected to the grip (12); the other end of the handle shaft (13) is a mounting end; the mounting end is provided with the rotation limiting portion (11); the base (2) is provided with a shaft hole (23) rotatably matched with the mounting end; the mounting end is rotatably inserted into the shaft hole (23) of the base (2).

4. The handle assembly of the rotary isolating switch according to claim 3, characterized in that: A support step (24) for supporting the mounting end is provided in the rotating shaft hole (23); the support step (24) is arranged around the side wall of the rotating shaft hole (23) and is provided with a limiting notch (25) so as to form a relatively opening limiting portion (21) and a closing limiting portion (22); the rotation limiting portion (11) is a protruding structure formed along the axial protrusion on the mounting end; the mounting end is placed on the support step (24) and slidably cooperates with the support step (24); the rotation limiting portion (11) is placed in the limiting notch (25) on the support step (24) and slidably cooperates with the support step (24).

5. The handle assembly of the rotary isolating switch according to claim 4, characterized in that: The rotation limiting portion (11) is an arc-shaped convex rib structure that is slidably matched with the side wall of the rotating shaft hole (23).

6. The handle assembly of the rotary isolating switch according to claim 3, characterized in that: The handle (1) further comprises two handle wings (14) symmetrically arranged on both radial sides of the handle rotating shaft (13); the handle (12) and the two handle wings (14) are vertically connected to form a T-shaped structure; the handle wings (14) are parallel to the base (2) and are provided with side flanges (15) protruding toward the base (2) on the circumferential sides.

7. The handle assembly of the rotary isolating switch according to claim 1, characterized in that: An annular groove surrounding the rotating shaft hole (23) is provided on one side of the base (2) facing the handle assembly installation position, and is used to install a first sealing ring (3). A protruding extrusion portion is provided on the annular side wall of the annular groove. The first sealing ring (3) is arranged in the annular groove and is squeezed and limited by the extrusion portion.

8. The handle assembly of the rotary isolating switch according to claim 1, characterized in that: The invention also comprises a connecting shaft (4), one end of which is connected to the handle (1), and the other end of which passes through the rotating shaft hole (23) of the base (2) and is used for being linked to the operating end of the operating mechanism, a second sealing ring (5) is arranged between the outer wall of the connecting shaft (4) and the side wall of the rotating shaft hole (23), and an assembly groove for assembling the second sealing ring (5) is provided on the outer wall of the connecting shaft (4).

9. The handle assembly of the rotary isolating switch according to claim 8, characterized in that: The handle (1) and the connecting shaft (4) are arranged separately; one end of the connecting shaft (4) connected to the handle (1) is provided with a first screw hole; the other end of the connecting shaft (4) is provided with a first receiving groove (41) for inserting the operating end of the operating mechanism; the handle (1) is provided with a second receiving groove (16) for receiving one end of the connecting shaft (4); a second screw hole penetrating the handle (1) is provided in the second receiving groove (16); a fixing screw (6) fixes the handle (1) and the connecting shaft (4) through the second screw hole and the first screw hole; one end of the connecting shaft (4) provided with the first receiving groove (41) is radially provided with a connecting hole (42) penetrating the connecting shaft (4) and communicating with the first receiving groove (41), and is used to be connected to the operating end of the operating mechanism through a connecting piece.

10. A rotary isolating switch, comprising an operating mechanism and a switch unit driven by the operating mechanism, wherein one end of the operating mechanism is connected to the switch unit as a driving end, and the other end of the operating mechanism is extended out of the housing of the operating mechanism as an operating end, and is used to drive the operating mechanism to operate, characterized in that: It also comprises a handle assembly of a rotary isolating switch according to any one of claims 1 to 9, wherein a handle (1) of the handle assembly is connected to an operating end of an operating mechanism.

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