Rotary disconnecting switch with lock handle structure and rotary disconnecting switch

Abstract

A rotary disconnecting switch handle structure with a lock comprises a handle, a limiting piece, a locking piece and a reset piece. The handle is rotationally arranged and can rotate between an opening position and a closing position so as to drive the rotary disconnecting switch to be opened or closed; a padlock hole is formed in the handle, and the limiting piece is rotationally arranged on the handle and can rotate between an unlocking position and a locking position; when the reset piece drives the limiting piece to be kept at the unlocking position, the handle can rotate; the handle is rotated to a preset position, the limiting piece is rotated to a locking position, the limiting piece and the locking piece are matched in a locking mode to limit rotation of the handle, and a padlock is inserted into the padlock hole so that the limiting piece can be kept at the locking position. The rotary disconnecting switch comprises the rotary disconnecting switch handle structure with the lock, and the handle is in linkage connection with the operating end of the operating mechanism. According to the rotary disconnecting switch with the lock handle structure and the rotary disconnecting switch, the switch-on and switch-off of the rotary disconnecting switch caused by misoperation are avoided, the structure is simple, and the locking operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a rotary isolating switch with a lockable handle structure 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] When the isolating switch is opened and the power is cut off, a padlock is required to prevent others from operating it by mistake. In addition, in some key places, the switch needs to be locked when it is closed to prevent others from intentionally or unintentionally opening the switch and cutting off the power during the operation of the equipment, thereby causing large production losses. However, the padlock mechanism of the existing isolating switch is not convenient to operate and has a relatively complex structure. Summary of the invention

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

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

[0006] A lockable handle structure for a rotary disconnector comprises a handle, a limiting member, a locking member and a reset member; the handle is rotatably arranged and can be rotated between an opening position and a closing position to drive the rotary disconnector to open or close; a padlock hole is provided on the handle, and the limiting member is rotatably arranged on the handle and can be rotated between an unlocking position and a locking position; the handle can be rotated when the reset member drives the limiting member to remain in the unlocking position; the handle is rotated to a predetermined position, and the limiting member is rotated to a locking position, the limiting member and the locking member are locked and matched to limit the rotation of the handle, and a padlock is inserted into the padlock hole to keep the limiting member in the locking position.

[0007] Optionally, the reset member is disposed between the limiting member and the handle, and during the rotation of the limiting member from the unlocking position to the locking position, the reset member is compressed to store energy; and the reset member releases energy to drive the limiting member to reset to the unlocking position.

[0008] Optionally, the reset member is a spring, one end of the spring is placed in a first limiting groove on the handle, and the other end of the spring is placed in a second limiting groove on the limiting member.

[0009] Optionally, the second limiting groove is a square groove structure, and limiting protrusions are provided on both sides of the groove.

[0010] Optionally, the reset member is an elastic portion integrally provided on the limiting member, and an end portion of the elastic portion is placed in a first limiting groove on the handle.

[0011] Optionally, the elastic portion is an arc-shaped plate structure, and the end of the elastic portion is a cylindrical end.

[0012] Optionally, the limiting member is provided with a locking portion for cooperating with the locking member, and the elastic portion is located between the locking portion and the axis of the rotation shaft of the limiting member.

[0013] Optionally, the predetermined position is an opening position.

[0014] Optionally, the axis of the rotation shaft of the handle and the axis of the rotation shaft of the limiting member are arranged to intersect with each other in different planes.

[0015] Optionally, the limiting member is provided with a locking portion, and the locking member is provided with a locking groove that cooperates with the locking portion, and when the limiting member is in the locking position, the locking portion is inserted into the locking groove.

[0016] Optionally, the locking member is a disc structure whose axis coincides with the axis of the rotating shaft of the handle, and a raised upper flange is provided on the circumferential side of the locking member, and the locking groove is arranged on the upper flange.

[0017] Optionally, the locking member is provided with two locking grooves, and the two locking grooves are symmetrically arranged on the upper flange at 180° around the axis of the handle.

[0018] Optionally, the handle is provided with an unlocking limiting part and a locking limiting part for limiting the rotation angle of the limiting member, and the limiting member is provided with a rotation limiting part, the rotation limiting part has an unlocking limiting surface cooperating with the unlocking limiting part and a locking limiting surface cooperating with the locking limiting part, and the rotation limiting part of the limiting member is limited to rotate between the unlocking limiting part and the locking limiting part, so that the limiting member is limited to rotate between the unlocking position and the locking position.

[0019] Optionally, the handle is provided with an installation groove for installing a limiting member, the installation groove having two opposite limiting side walls and opposite installation side walls and an installation entrance, the limiting side wall is provided with a shaft hole which cooperates with the limiting member shaft for rotation, the limiting member is rotatably installed on the handle through the limiting member shaft, and a padlock hole is provided on each of the two limiting side walls; the limiting member is installed in the installation groove, and when in the unlocked position, the limiting member is blocked between the padlock holes of the two limiting side walls, and when in the locked position, the limiting member avoids the padlock hole so that the two padlock holes are connected.

[0020] Optionally, the limiting member is provided with an operating portion extending out of the installation slot, and the operating portion is an arc-shaped plate structure covering the installation entrance.

[0021] Optionally, a first limiting groove is provided on the installation side wall, and one end of the reset member is placed in the first limiting groove.

[0022] Optionally, when the limiting member rotates between the unlocking position and the locking position, the operating portion always covers the installation entrance.

[0023] 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 operate. The rotary isolating switch also comprises any of the above-mentioned locking handle structures, and the handle is linked to the operating end of the operating mechanism.

[0024] The utility model discloses a rotary isolating switch with a locking handle structure and a rotary isolating switch, wherein a limiting member is rotatably arranged on the handle and the limiting member is kept in an unlocked position by a resetting member, and the limiting member can rotate with the handle, or can be rotated relative to the handle to a locking position and locked with the locking member to realize locking the handle, thereby avoiding the opening and closing of the rotary isolating switch due to misoperation, and the structure is simple and the locking operation is convenient, and it only needs to rotate the limiting member on the handle.

[0025] In addition, the locking groove cooperates with the locking portion slot to form a locking structure between the limiting member and the locking member, which has a simple structure and a simple and reliable locking action.

[0026] In addition, the rotation axis of the handle is perpendicular to the rotation axis of the limiting member, and the layout between the handle, the limiting member and the locking member is compact and reasonable, which is easy to assemble and also helps to simplify the locking structure between the limiting member and the locking member. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional diagram of the handle structure of the first embodiment of the utility model in the unlocked state;

[0028] Figure 2 It is a cross-sectional view of the handle structure of the first embodiment of the utility model in the unlocked state with the connecting shaft hidden;

[0029] Figure 3 It is a three-dimensional diagram of the handle structure of the first embodiment of the utility model in the locked state;

[0030] Figure 4 It is a cross-sectional view of the handle structure of the first embodiment of the utility model in the locked state with the connecting shaft hidden;

[0031] Figure 5 This is a schematic diagram of the structure of a limiting member in Embodiment 1 of the utility model;

[0032] Figure 6 This is a cross-sectional view of the handle structure of Embodiment 2 of the utility model in the unlocked state with the connecting shaft hidden;

[0033] Figure 7 This is a cross-sectional view of the handle structure of Embodiment 2 of the utility model in a locked state with the connecting shaft hidden;

[0034] Figure 8 This is a schematic diagram of the structure of the limiting member of the second embodiment of the utility model;

[0035] Fig. 9 It is a structural schematic diagram of the locking member of the utility model;

[0036] Fig.10 It is a schematic diagram of the handle of the utility model from one perspective;

[0037] Fig.11 This is a schematic diagram of the handle of the utility model from another perspective;

[0038] Handle 1; padlock hole 11; mounting groove 12; mounting entrance 13; unlocking limiting portion 131; locking limiting portion 132; shaft hole 14; first limiting groove 15; handle 16; shaft sleeve 17; insertion hole 171; handle wing 18; reinforcing rib 19; limiting member 2; locking portion 21; rotation limiting portion 22; unlocking limiting surface 221; locking limiting surface 222; limiting member shaft 23; second limiting groove 24; limiting protrusion 241; operating portion 25; elastic portion 26; locking member 3; stop portion 31; through hole 32; upper flange 33; locking groove 34; spring 4; connecting shaft 5. DETAILED DESCRIPTION

[0039] The following embodiments are combined with the accompanying drawings to further illustrate the specific implementation of the rotary isolating switch with a lock handle structure and the rotary isolating switch of the present invention. The rotary isolating switch with a lock handle structure and the rotary isolating switch of the present invention are not limited to the description of the following embodiments.

[0040] 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.

[0041] like Figure 1-4 , Figure 6-7As shown, the rotary isolating switch with lock handle structure of this embodiment includes a handle 1, a limiting member 2, a locking member 3 and a reset member; the handle 1 is linked to the operating end of the operating mechanism through a connecting shaft 5, and the handle 1 is rotatably arranged, and the handle 1 can be rotated between the opening position and the closing position to drive the rotary isolating switch to open or close; the handle 1 is provided with a padlock hole 11 for inserting a padlock. 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 handle 1 is installed at the outer wall of the cabinet corresponding to the operating end of the operating mechanism. In particular, the limiting member 2 is rotatably arranged on the handle 1 and can rotate between an unlocked position and a locked position; when the limiting member 2 is in the unlocked position, that is, in the unlocked state, the limiting member 2 and the locking member 3 are unlocked and cooperated to make the handle 1 rotatable; when the reset member drives the limiting member 2 to remain in the unlocked position, the handle 1 can rotate freely; when the handle 1 is rotated to a predetermined position by an external force, and the limiting member 2 is rotated to the locked position by an external force, that is, in the locked state, the limiting member 2 and the locking member 3 are locked and cooperated to limit the rotation of the handle 1, and a padlock is inserted into the padlock hole 11 to keep the limiting member 2 in the locked position.

[0042] The rotary isolating switch with a lockable handle structure and the rotary isolating switch of this embodiment, the limiting member 2 is rotatably arranged on the handle 1 and the limiting member 2 is kept in the unlocked position by the reset member, the limiting member 2 can rotate with the handle 1, and can also rotate relative to the handle 1 to the locked position and lock with the locking member 3 to achieve the locking of the handle 1, so as to avoid the opening and closing of the rotary isolating switch due to misoperation, the structure is simple, the locking operation is convenient, and only the limiting member 2 on the handle 1 needs to be rotated. It should be noted that the handle 1 can be directly mounted on the outer wall of the cabinet, or a base can be further provided, the handle 1 is rotatably arranged on the base, and the locking member 3 can also be fixedly mounted on the base, so that the lockable handle structure is assembled into a whole, and then the base is fixedly mounted on the outer wall of the cabinet.

[0043] In this embodiment, the predetermined position is the opening position, and the handle 1 is locked in the opening position by the limiting member 2, that is, when in the opening position, the limiting member 2 can cooperate with the locking member 3 to achieve locking, thereby locking the rotary isolating switch in the opening state. Of course, as other embodiments, the predetermined position can also be the closing position, and the handle 1 is locked in the closing position by the limiting member 2, that is, when in the closing position, the limiting member 2 can cooperate with the locking member 3 to achieve locking, thereby locking the rotary isolating switch in the closing state.

[0044] like Figure 4-9As shown, the locking structure between the limiting member 2 and the locking member 3 of this embodiment, the limiting member 2 is provided with a locking portion 21, and the locking member 3 is provided with a locking groove 34 matched with the locking portion 21, and the locking groove 34 has two opposite stop portions 31, and the two stop portions 31 are sequentially arranged at intervals along the rotation direction of the handle 1, that is, a gap is left between the two stop portions 31 to form the locking groove 34, and when the limiting member 2 is in the locking position, the locking portion 21 is inserted into the locking groove 34 and is located between the two stop portions 31. The locking groove 34 cooperates with the locking portion 21 slot to form the locking structure between the limiting member 2 and the locking member 3, which has a simple structure and a simple and reliable locking action.

[0045] Further, the axis of the rotation shaft of the handle 1 and the axis of the rotation shaft of the limiting member 2 are arranged to intersect with each other in different planes. Preferably, the axis of the rotation shaft of the handle 1 and the axis of the rotation shaft of the limiting member 2 are arranged perpendicularly. The stopper 31 of the locking member 3 is a plane parallel to the axis of the rotation shaft of the handle 1. The locking portion 21 of the limiting member 2 is a protruding structure protruding in the vertical direction of the axis of the rotation shaft of the limiting member 2. The layout between the handle 1, the limiting member 2 and the locking member 3 is compact and reasonable, which is convenient for assembly and also helps to simplify the locking structure between the limiting member 2 and the locking member 3. Preferably, the locking member 3 is a disc structure whose axis coincides with the axis of the rotation shaft of the handle 1. The locking member 3 is provided with a through hole 32 for the rotation shaft of the handle 1 to pass through. The circumferential side of the locking member 3 is provided with an upper flange 33 protruding toward the limiting member 2. The locking groove 34 is arranged on the upper flange 33. The locking member 3 has a simple structure and is easy to manufacture. Preferably, the locking member 3 is provided with two locking grooves 34, and the two locking grooves 34 are symmetrically arranged at 180° around the axis of the handle 1, so that the locking member 3 has the same effect when rotated 180° for installation, which can achieve an anti-foolproof effect and facilitate the installation of the locking member 3; when the handle 1 is rotated to a preset position, the limiting member 2 is rotated to the locking position, and the locking portion 21 of the limiting member 2 extends into one of the locking grooves 34 to lock the handle 1.

[0046] like Figure 4-10 As shown, the rotation limiting structure of the limiting member 2 of this embodiment, the handle 1 is provided with an unlocking limiting portion 131 and a locking limiting portion 132 for limiting the rotation angle of the limiting member 2, the limiting member 2 is provided with a rotation limiting portion 22, the rotation limiting portion 22 has an unlocking limiting surface 221 matched with the unlocking limiting portion 131 and a locking limiting surface 222 matched with the locking limiting portion 132, the rotation limiting portion 22 of the limiting member 2 is limited to rotate between the unlocking limiting portion 131 and the locking limiting portion 132, so that the limiting member 2 is limited to rotate between the unlocking position and the locking position. When the rotation limiting member 2 is in contact with the unlocking limiting surface 221 and the unlocking limiting portion 131, the limiting member 2 is in the unlocking position; when the rotation limiting member 2 is in contact with the locking limiting surface 222 and the locking limiting portion 132, the limiting member 2 is in the locking position.

[0047] like Figure 4-8 and Figure 10-11 As shown, the mounting structure between the limiting member 2 and the handle 1 of this embodiment, the handle 1 is provided with a mounting groove 12 for mounting the limiting member 2, the mounting groove 12 has two opposite limiting side walls and opposite mounting side walls and a mounting entrance 13, the mounting entrance 13 has two opposite side walls, which serve as an unlocking limiting portion 131 and a locking limiting portion 132, the mounting side wall is provided with a first limiting groove 15, the limiting side wall is provided with a shaft hole 14 which is rotatably matched with the limiting member shaft 23, the limiting member 2 is rotatably mounted on the handle 1 through the limiting member shaft 23, and a padlock hole 11 is respectively provided on the two limiting side walls; the limiting member 2 is installed in the mounting groove 12, and when in the unlocking position, the limiting member 2 is blocked between the padlock holes 11 of the two limiting side walls, and when in the locking position, the limiting member 2 avoids the padlock holes 11 so that the two padlock holes 11 are connected. The limiting member 2 can avoid the padlock hole 11 by misaligning the limiting member 2 as a whole with the padlock hole 11, or by providing a notch groove or a corresponding hole on the limiting member 2, and the notch groove or hole corresponds to the padlock hole 11 when in the locked position.

[0048] like Figure 4-8 As shown, the limiting member 2 is provided with an operating portion 25 extending out of the installation slot 12, and the operating portion 25 is an arc-shaped plate structure covering the installation entrance 13. When the limiting member 2 rotates between the unlocking position and the locking position, the operating portion 25 always covers the installation entrance 13. The limiting member rotating shaft 23, as the rotating shaft of the limiting member 2, is a round shaft structure integrally provided on the limiting member 2. Of course, the limiting member rotating shaft 23 and the limiting member 2 can be separately provided, and the limiting member 2 is provided with a matching hole that matches the limiting member rotating shaft 23.

[0049] like Figure 10-11 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 16, a rotating shaft sleeve 17 and two handle wings 18. The handle 16 is a straight-line hollow shell, and a plurality of reinforcing ribs 19 are arranged in the hollow shell in a horizontal and vertical manner. The rotating shaft sleeve 17 is arranged in the hollow shell of the handle 16 and is connected to the inner wall of the hollow shell of the handle 16 through the reinforcing ribs 19. The rotating shaft sleeve 17 has a socket 171 that cooperates with the connecting shaft 5. One end of the connecting shaft 5 is inserted into the socket 171 and fixed to the handle 1 by a fixing screw. The other end of the connecting shaft 5 is linked to the operating end of the operating mechanism. The handle wing 18 is similar to a bow plate structure. The handle wing 18 is provided with a downwardly protruding lower flange on the circumferential side. The handle 16 and the two handle wings 18 are vertically connected to form a T-shaped structure. The two ends of the handle 16 protrude from the handle wings 18, and one end of the handle 16 is provided with the mounting groove 12. In this embodiment, the connecting shaft 5 can be used as the rotating shaft of the handle 1 , and of course, the end of the rotating shaft sleeve 17 can extend out of the handle 16 to serve as the rotating shaft of the handle 1 .

[0050] like Figure 4-8 As shown, the reset member of the rotary disconnector with a lock handle structure of this embodiment is arranged between the limiting member 2 and the handle 1. The reset member is compressed and stores energy during the rotation process of the limiting member 2 from the unlocking position to the locking position. When the padlock is removed from the padlock hole 11, the limiting member 2 is in a state where it can rotate toward the unlocking position, and the reset member releases energy to drive the limiting member 2 to reset to the unlocking position. Furthermore, after the limiting member 2 is installed, the reset member is compressed, and the reaction force of the reset member causes the limiting member 2 to rotate in the unlocking direction, i.e., counterclockwise in the figure.

[0051] The reset member structure of this embodiment has two embodiments. Figure 2 and Figure 4 As shown, in this embodiment, the reset member is a spring 4, one end of the spring 4 is placed in the first limiting groove 15 on the handle 1, and the other end of the spring 4 is placed in the second limiting groove 24 on the limiting member 2. Further, when the limiting member 2 is in the unlocked position, the second limiting groove 24 is arranged opposite to the first limiting groove 15 (i.e., facing each other), so that the spring 4 is arranged horizontally as shown in FIG. Figure 2 As shown, specifically, the second limiting groove 24 is located above the locking portion 21 and to the right of the first limiting groove 15; when the limiting member 2 is in the locked position, the second limiting groove 24 rotates and is staggered with the first limiting groove 15, so that one end of the spring 4 in the second limiting groove 24 is twisted to complete the energy storage. Figure 4 Preferably, the second limiting groove 24 is a square groove structure, and limiting protrusions 241 are provided on both sides of the groove, so that the second limiting groove 24 has a narrow groove, and the spring 4 is not easy to escape from the second limiting groove 24 even if it is twisted.

[0052] Example 2 Figure 6-8 As shown, in this embodiment, the reset member is an elastic portion 26 integrally provided on the limiting member 2, and the elastic portion 26 is preferably an arc-shaped plate structure and has a cylindrical end, and the end of the elastic portion 26 is placed in the first limiting groove 15 on the handle 1; when the limiting member 2 is in the locked position, the end of the elastic portion 26 is maintained in the first limiting groove 15, and the root of the elastic portion 26 integrally provided on the limiting member 2 is twisted to complete energy storage. The difference between this embodiment and the first embodiment is that the spring 4 is not provided, and the second limiting groove 24 is not provided on the limiting member 2, and the elastic portion 26 is directly provided integrally on the limiting member 2, which reduces one part and facilitates installation. Preferably, the limiting member 2 is provided with a locking portion 21 for cooperating with the locking member 3, and the elastic portion 26 is located between the locking portion 21 and the axis of the rotating shaft of the limiting member 2. As shown Fig.11As shown, the structure of the first limiting groove 15 in Example 1 and Example 2 is the same, and is preferably a square groove structure arranged on one side of the limiting member 2. The first limiting groove 15 is provided with inclined side walls on both sides of the groove mouth so that the width of the first limiting groove 15 at the groove mouth is wider, which is convenient for the installation of the reset member.

[0053] 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.

[0054] 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 rotary disconnector handle structure with a lock, comprising a handle (1), a limiting member (2), a locking member (3) and a reset member; the handle (1) is rotatably arranged, and the handle (1) can be rotated between an opening position and a closing position to drive the rotary disconnector to open or close; the handle (1) is provided with a padlock hole (11), characterized in that: The limiting member (2) is rotatably arranged on the handle (1) and can be rotated between an unlocking position and a locking position; when the reset member drives the limiting member (2) to remain in the unlocking position, the handle (1) can be rotated; when the handle (1) is rotated to a predetermined position, the limiting member (2) is rotated to the locking position, the limiting member (2) and the locking member (3) are locked to limit the rotation of the handle (1), and a padlock is inserted into the padlock hole (11) to keep the limiting member (2) in the locking position.

2. The rotary isolating switch lockable handle structure according to claim 1, characterized in that: The reset member is arranged between the limiting member (2) and the handle (1), and during the rotation of the limiting member (2) from the unlocking position to the locking position, the reset member is compressed to store energy; The reset member releases energy to drive the limiting member (2) to reset to the unlocked position.

3. The lockable handle structure of the rotary isolating switch according to claim 2 is characterized in that: The reset member is a spring (4), one end of the spring (4) is placed in a first limiting groove (15) on the handle (1), and the other end of the spring (4) is placed in a second limiting groove (24) on the limiting member (2).

4. The lockable handle structure of the rotary isolating switch according to claim 3 is characterized in that: The second limiting groove (24) is a square groove structure, and limiting protrusions (241) are provided on both sides of the groove.

5. The lockable handle structure of the rotary isolating switch according to claim 2 is characterized in that: The reset member is an elastic portion (26) integrally arranged on the limiting member (2), and the end of the elastic portion (26) is placed in a first limiting groove (15) on the handle (1).

6. The lockable handle structure of the rotary isolating switch according to claim 5 is characterized in that: The elastic part (26) is an arc-shaped plate structure, and the end of the elastic part (26) is a cylindrical end.

7. The lockable handle structure of the rotary isolating switch according to claim 5, characterized in that: The limiting member (2) is provided with a locking portion (21) for cooperating with the locking member (3), and the elastic portion (26) is located between the locking portion (21) and the axis of the rotation shaft of the limiting member (2).

8. The lockable handle structure of the rotary isolating switch according to claim 1 is characterized in that: The predetermined position is the opening position.

9. The rotary isolating switch lockable handle structure according to claim 1, characterized in that: The rotation axis center of the handle (1) and the rotation axis center of the limiting member (2) are arranged to intersect with each other in different planes.

10. The lockable handle structure of the rotary isolating switch according to claim 1, characterized in that: The limiting member (2) is provided with a locking portion (21), and the locking member (3) is provided with a locking groove (34) that cooperates with the locking portion (21); when the limiting member (2) is in the locking position, the locking portion (21) is inserted into the locking groove (34).

11. The lockable handle structure of the rotary isolating switch according to claim 10, characterized in that: The locking member (3) is a disc structure whose axis coincides with the axis of the rotating shaft of the handle (1). A raised upper flange (33) is provided on the circumferential side of the locking member (3), and the locking groove (34) is provided on the upper flange (33).

12. The lockable handle structure of the rotary isolating switch according to claim 11, characterized in that: The locking member (3) is provided with two locking grooves (34), and the two locking grooves (34) are symmetrically arranged on the upper flange (33) at an angle of 180° around the axis of the rotation shaft of the handle (1).

13. The lockable handle structure of the rotary isolating switch according to claim 1, characterized in that: The handle (1) is provided with an unlocking limiting portion (131) and a locking limiting portion (132) for limiting the rotation angle of the limiting member (2); the limiting member (2) is provided with a rotation limiting portion (22); the rotation limiting portion (22) has an unlocking limiting surface (221) matched with the unlocking limiting portion (131) and a locking limiting surface (222) matched with the locking limiting portion (132); the rotation limiting portion (22) of the limiting member (2) is limited to rotate between the unlocking limiting portion (131) and the locking limiting portion (132), so that the limiting member (2) is limited to rotate between an unlocking position and a locking position.

14. The lockable handle structure of the rotary isolating switch according to claim 1, characterized in that: The handle (1) is provided with a mounting groove (12) for mounting the limiting member (2), the mounting groove (12) having two opposite limiting side walls, an opposite mounting side wall and a mounting entrance (13), the limiting side wall being provided with a rotating shaft hole (14) rotatably matched with the limiting member rotating shaft (23), the limiting member (2) being rotatably mounted on the handle (1) via the limiting member rotating shaft (23), and a padlock hole (11) being respectively provided on the two limiting side walls; the limiting member (2) is installed in the mounting groove (12), and when in the unlocking position, the limiting member (2) is blocked between the padlock holes (11) of the two limiting side walls, and when in the locking position, the limiting member (2) avoids the padlock holes (11) so that the two padlock holes (11) are connected.

15. The lockable handle structure of the rotary isolating switch according to claim 14, characterized in that: The limiting member (2) is provided with an operating portion (25) extending out of the installation slot (12); the operating portion (25) is an arc-shaped plate structure covering the installation entrance (13).

16. The lockable handle structure of the rotary isolating switch according to claim 14, characterized in that: A first limiting groove (15) is provided on the installation side wall, and one end of the reset element is placed in the first limiting groove (15).

17. The lockable handle structure of the rotary isolating switch according to claim 15, characterized in that: When the limiting member (2) rotates between the unlocking position and the locking position, the operating portion (25) always covers the installation entrance (13).

18. 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 lockable handle structure for a rotary isolating switch according to any one of claims 1 to 17, wherein the handle (1) is linked to the operating end of the operating mechanism.

Images