Opening and closing guide mechanism of isolating switch

Abstract

The utility model provides an opening and closing guide mechanism of an isolating switch. The opening and closing guide mechanism comprises a movable contact plate and a static contact plate, the movable contact plate is provided with a contact plate for locking the contact knife switch and the movable contact plate, the contact plate is fixed on the movable contact plate and is positioned on one side, back to the accommodating cavity, of the positioning rib, the contact knife switch is provided with a clamping groove for the contact plate to be clamped in, and two sides of the contact knife switch are provided with inclined plane guide ribs for guiding the contact plate to be clamped in the clamping groove. The contact plate is provided with a guide inclined plane attached to the inclined plane guide rib, and the guide mechanism can overcome the defect that in the prior art, due to the fact that the shapes of the first disconnecting link and the second disconnecting link are designed to be plane straight lines with the consistent upper and lower thicknesses, in the opening and closing process, the disconnecting links are prone to being dislocated, and consequently the disconnecting links are blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to an isolating switch opening and closing guide mechanism. Background Art

[0002] An isolating switch is a switching device mainly used for "isolating power supplies, switching operations, and connecting and disconnecting small current circuits". When the isolating switch is in the open position, there is an insulation distance between the contacts that meets the specified requirements and an obvious disconnection mark; when it is in the closed position, it can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time.

[0003] In the existing patent with publication number CN102394195A, a high-voltage disconnector is disclosed, which includes a first knife switch and a second knife switch. When closing the switch, since the shapes of the first knife switch and the second knife switch are designed as a flat straight line with consistent thickness at the top and bottom, during the process of opening and closing the switch, the knife switches may be misaligned, causing the knife switches to become stuck, resulting in the disconnector being unable to open or close normally. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect in the prior art that the first knife switch and the second knife switch are designed as a flat straight line with consistent thickness at the top and bottom, which may cause the knife switches to get stuck due to misalignment during the opening and closing process, thereby providing an opening and closing guide mechanism that can avoid the jamming of the disconnector.

[0005] To this end, the utility model provides a disconnecting and closing guide mechanism for an isolating switch, comprising: a moving touch plate and a stationary touch plate; a contact plate for locking a knife switch and the moving touch plate is arranged on the moving touch plate, the contact plate is fixed to the moving touch plate and is located on the side of the positioning rib facing away from the accommodating cavity, a slot for the contact plate to be inserted into is arranged on the knife switch, and inclined guide ribs for guiding the contact plate to be inserted into the slots are arranged on both sides of the knife switch, and a guiding inclined surface is arranged on the contact plate due to the contact of the inclined guide ribs.

[0006] Further: the knife touch switch includes a first knife touch plate and a second knife touch plate arranged opposite to each other, the abutment rod is located between the first knife touch plate and the second knife touch plate, the card slot is opened between the first knife touch plate and the second knife touch plate, and the inclined guide rib is arranged at the upper and lower ends of the first knife touch plate and the second knife touch plate.

[0007] Further: the knife gate is arranged between the moving touch plate and the stationary touch plate, one end of the knife gate is hinged to the stationary touch plate, and the other end is provided with a lock; the hook plate is located below the moving touch plate, and is used to engage with the lock to lock the knife gate and the moving touch plate; a locking structure is provided between the knife gate and the moving touch plate, and the locking structure includes a positioning piece arranged on the moving touch plate or one side of the knife gate, and an abutment rod arranged on the other side and capable of cooperating with the positioning piece, wherein when the knife gate is in a closed state, the abutment rod abuts against the positioning piece to prevent the knife gate from moving laterally in a direction away from the moving touch plate.

[0008] Further: the positioning member is located on the moving touch plate, the abutment rod is located on the knife switch, the positioning member includes a positioning plate fixed on the moving touch plate and a positioning rib located above the positioning plate, the positioning plate and the positioning rib are arranged in an "L" structure and are surrounded to form an accommodating cavity for the abutment rod to be inserted into, when the knife switch is in a closed state, the abutment rod is located in the accommodating cavity and abuts against the positioning rib.

[0009] Furthermore: the positioning rib is provided with a guiding arc surface for guiding the abutment rod to enter the accommodating cavity.

[0010] Further: the guiding arc surface includes a first arc surface located at the top of the positioning rib and a second arc surface located at the connection between the positioning rib and the positioning plate. When the knife switch is in a closed state, the abutment rod contacts the second arc surface.

[0011] Furthermore: it also includes a pull ring assembly, which includes a stretching part and a driven part arranged below the stretching part, the lock is arranged on the side of the driven part facing away from the stretching part, and a hook is arranged on the side of the stretching part that contacts the driven part to drive the driven part to rotate so as to separate the lock from the hook plate, and the driven part has an extension plate that abuts against the hook.

[0012] The technical solution of the utility model has the following advantages:

[0013] 1. The utility model provides a disconnecting and closing guide mechanism for an isolating switch, wherein one end of the knife switch is hinged to a stationary touch plate, and the other end can be fitted with or separated from a moving touch plate. When the knife switch is separated from the moving touch plate, the isolating switch is in an disconnecting state, and when the knife switch is fitted with the stationary touch plate, the isolating switch is in a closing state. When the knife switch switches from disconnecting to closing, the contact plate will be snapped into the card slot of the knife switch. During the snapping process, the guiding inclined surface on the contact plate will contact the inclined guide ribs on both sides of the knife switch. When the knife switch continues to be pressed downward, the knife switch can be quickly closed through the guidance of the inclined guide ribs and the guiding inclined surface.

[0014] 2. The utility model provides a disconnecting switch opening and closing guide mechanism, wherein inclined guide ribs are arranged at the upper and lower ends of the first touch knife plate and the second touch knife plate. When the touch knife switch is closed, the contact plate will first contact the inclined guide ribs at the bottom of the first touch knife plate and the second touch knife plate, and then follow the guidance of the inclined guide ribs to make the contact plate stuck between the first touch knife plate and the second touch knife plate.

[0015] 3. The utility model provides a disconnecting and closing guide mechanism for an isolating switch. When the knife switch is closed, a positioning piece arranged on the moving touch plate or one side of the knife switch will abut against the abutment rod. Since the static touch plate and the moving touch plate are energized, a lateral repulsive force will be generated to drive the lock catch and the hook plate to disengage. When the positioning piece and the abutment rod abut, the moving touch plate cannot move laterally due to the resistance of the positioning piece. When the moving touch plate cannot move laterally, the lock catch and the hook plate cannot be separated, thereby avoiding accidental opening of the knife switch and ensuring that the circuit can be effectively connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is the overall structural diagram of the isolating switch;

[0018] Figure 2 It is a side view of the isolating switch;

[0019] Figure 3 for Figure 1 Enlarged view of part A in the middle.

[0020] Description of reference numerals:

[0021] 11. Moving touch plate; 21. Stationary touch plate; 3. Knife contact switch; 30. Guide slope; 31. First knife contact plate; 32. Second knife contact plate; 4. Lock buckle; 41. Hook plate; 5. Positioning piece; 51. Positioning plate; 52. Positioning rib; 53. Accommodating chamber; 6. Abutment rod; 7. Guide arc surface; 71. First arc surface; 72. Second arc surface; 8. Contact plate; 81. Inclined guide rib; 9. Stretching part; 91. Driven part; 92. Hook piece; 93. Extension plate; 94. Positioning block; 95. Positioning groove; 96. Torsion spring. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] The present embodiment provides an isolating switch opening and closing guide mechanism, an isolating switch opening and closing guide mechanism, characterized in that it comprises: a moving touch plate 11 and a stationary touch plate 21; the moving touch plate 11 is provided with a contact plate 8 for locking the knife switch 3 and the moving touch plate 11, the contact plate 8 is fixed to the moving touch plate and is located on the side of the positioning rib 52 facing away from the accommodating cavity 53, the knife switch 3 is provided with a slot for the contact plate 8 to be inserted into, and both sides of the knife switch 3 are provided with inclined guide ribs 81 for guiding the contact plate 8 to be inserted into the slot, and the contact plate 8 is provided with a guiding inclined surface due to the contact of the inclined guide rib 81.

[0028] The above specific improvements are: Figure 1 and Figure 2As shown, one end of the knife switch 3 is hinged to the static touch plate 21, and the other end can be attached to or separated from the moving touch plate 11. When the knife switch 3 is separated from the moving touch plate 11, the isolating switch is in an open state, and when the knife switch 3 is attached to the static touch plate 21, the isolating switch is in a closed state. When the knife switch 3 switches from open to closed, the contact plate will be snapped into the slot of the knife switch 3. During the snapping process, the guiding slope on the contact plate will contact the slope guide ribs 81 on both sides of the knife switch 3. When the knife switch 3 continues to be pressed downward, the knife switch 3 can be quickly closed through the guidance of the slope guide ribs 81 and the guiding slope.

[0029] On the basis of the above embodiment: the knife touch switch 3 includes a first knife touch plate 31 and a second knife touch plate 32 arranged opposite to each other, the abutment rod 6 is located between the first knife touch plate 31 and the second knife touch plate 32, the card slot is opened between the first knife touch plate 31 and the second knife touch plate, and the inclined guide rib 81 is arranged at the upper and lower ends of the first knife touch plate 31 and the second knife touch plate 32.

[0030] The above-mentioned specific improvement is as follows: the inclined guide ribs 81 are arranged at the upper and lower ends of the first touch knife plate 31 and the second touch knife plate 32. When the touch knife switch 3 is closed, the contact plate 8 will first contact the inclined guide ribs 81 at the bottom of the first touch knife plate 31 and the second touch knife plate 32, and then follow the guidance of the inclined guide ribs 81 to make the contact plate 8 inserted between the first touch knife plate 31 and the second touch knife plate 32.

[0031] On the basis of the above embodiment: the knife gate 3 is arranged between the moving touch plate 11 and the stationary touch plate 21, one end of the knife gate 3 is hinged to the stationary touch plate 21, and the other end is provided with a lock buckle 4; the hook plate 41 is located below the moving touch plate 11, and is used to buckle with the lock buckle 4 to lock the knife gate 3 and the moving touch plate 11; a locking structure is provided between the knife gate 3 and the moving touch plate 11, and the locking structure includes a positioning member 5 arranged on one side of the moving touch plate 11 or the knife gate 3, and an abutment rod 6 arranged on the other side and capable of cooperating with the positioning member 5, wherein when the knife gate 3 is in a closed state, the abutment rod 6 abuts against the positioning member 5 to prevent the knife gate 3 from moving laterally in a direction away from the moving touch plate 11.

[0032] The above-mentioned specific improvements are as follows: when the knife switch 3 is closed, the positioning piece 5 arranged on the moving touch plate 11 or one side of the knife switch 3 will abut against the abutment rod 6. Since the static touch plate 21 and the moving touch plate 11 are energized, a lateral repulsive force will be generated, thereby driving the lock buckle 4 to disengage from the hook plate 41. When the positioning piece 5 and the abutment rod 6 abut, the moving touch plate 11 cannot move laterally due to the resistance of the positioning piece 5. When the moving touch plate 11 cannot move laterally, the lock buckle 4 and the hook plate 41 cannot be separated, thereby avoiding the accidental opening of the knife switch 3 and ensuring that the circuit can be effectively connected.

[0033] On the basis of the above embodiment: the positioning member 5 is located on the moving touch plate 11, the abutment rod 6 is located on the knife switch 3, the positioning member 5 includes a positioning plate 51 fixed on the moving touch plate 11 and a positioning rib 52 located above the positioning plate 51, the positioning plate 51 and the positioning rib 52 are arranged in an "L" structure and are surrounded to form an accommodating cavity 53 for the abutment rod 6 to be inserted into, when the knife switch 3 is in the closed state, the abutment rod 6 is located in the accommodating cavity 53 and abuts against the positioning rib 52.

[0034] The above-mentioned specific improvements are as follows: the positioning member 5 is composed of a positioning plate 51 and two positioning ribs 52, the positioning plate 51 is fixed above the moving touch plate 11, and the positioning ribs 52 extend away from the positioning plate 51, and the positioning ribs 52 and the positioning plate 51 will form an accommodating cavity 53 for the abutment rod 6 to be inserted into. When the knife gate 3 switches from the open state to the closed state, the abutment rod 6 will cross the positioning ribs 52 and be inserted into the accommodating cavity 53. When the knife gate 3 switches from the closed state to the open state, the knife gate 3 is rotated counterclockwise, and the abutment rod 6 will disengage from the accommodating cavity 53, thereby separating the knife gate 3 from the moving touch plate 11.

[0035] On the basis of the above embodiment: the positioning rib 52 is provided with a guiding arc surface 7 for guiding the abutting rod 6 to enter the accommodating cavity 53 .

[0036] The above specific improvements are: Figure 3 As shown, by providing the guiding arc surface 7, the abutting rod 6 can be guided to smoothly enter the accommodating cavity 53 when the switch is closed.

[0037] Based on the above embodiment: the guiding arc surface 7 includes a first arc surface 71 located at the top of the positioning rib 52 and a second arc surface 72 located at the connection between the positioning rib 52 and the positioning plate 51 . When the knife switch 3 is in the closed state, the abutment rod 6 contacts the second arc surface 72 .

[0038] The above specific improvements are: Figure 3 As shown, the guiding arc surface 7 includes a first arc surface 71 and a second arc surface 72. The first arc surface 71 is arranged on the top of the positioning rib 52, and the second arc surface 72 is arranged at the position where the positioning rib 52 contacts the positioning plate 51. When the knife switch 3 is closed, the abutment rod 6 will first contact the first arc surface 71. When the knife switch 3 is continued to be pressed downward, the abutment rod 6 will enter the accommodating cavity 53 along with the first arc surface 71 until the arc surface of the abutment rod 6 is in contact with the second arc surface 72.

[0039] On the basis of the above embodiment: it also includes a pull ring assembly, which includes a stretching portion 9 and a driven portion 91 arranged below the stretching portion 9, the lock buckle 4 is arranged on the side of the driven portion 9 facing away from the stretching portion 9, and the side of the stretching portion 9 that contacts the driven portion 91 is provided with a hook member 92 that drives the driven portion 91 to rotate so as to separate the lock buckle 4 from the hook plate 41, and the driven portion 91 has an extension plate 93 that abuts against the hook member 92.

[0040] The above specific improvements are: Figure 3 As shown, the pull ring assembly is used to pull up the knife switch 3 to open the isolating switch. The pull ring assembly includes a stretching portion 9 and a driven portion 91. When the stretching portion 9 is pulled up, the positioning block 94 will be stuck in the positioning groove 95, and then the hook 92 will hook the hook plate 41 to lift the driven portion 91 upward. At this time, the lock 4 is separated from the hook plate 41, and the isolating switch is unlocked and can be lifted upward counterclockwise (at this time, the torsion spring 96 in the driven portion 91 is in an elastic stretching state). When the stretching portion 9 is released by hand, the torsion spring 96 is elastically reset, which will drive the lock 4 to engage with the hook plate 41.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A disconnector opening and closing guide mechanism, characterized in that: include: A movable touch plate (11) and a stationary touch plate (21); the movable touch plate (11) is provided with a contact plate (8) for locking the knife gate (3) and the movable touch plate (11); the contact plate (8) is fixed to the movable touch plate and is located on the side of the positioning rib (52) facing away from the accommodating cavity (53); the knife gate (3) is provided with a slot for the contact plate (8) to be inserted into; and both sides of the knife gate (3) are provided with inclined guide ribs (81) for guiding the contact plate (8) to be inserted into the slot; the contact plate (8) is provided with a The knife gate (3) comprises a first knife touch plate (31) and a second knife touch plate (32) which are arranged opposite to each other, the card slot is provided between the first knife touch plate (31) and the second knife touch plate, the inclined guide rib (81) is provided at the upper and lower ends of the first knife touch plate (31) and the second knife touch plate (32), the knife gate (3) is provided between the moving touch plate (11) and the stationary touch plate (21), one end of the knife gate (3) is hinged to the stationary touch plate (21), and the other end is provided with a lock buckle (4); A hook plate (41) is located below the moving touch plate (11) and is used to be coupled with the lock catch (4) to lock the knife switch (3) and the moving touch plate (11); A locking structure is provided between the knife switch (3) and the moving touch plate (11), the locking structure comprising a positioning member (5) provided on one side of the moving touch plate (11) or the knife switch (3), and an abutment rod (6) provided on the other side and capable of cooperating with the positioning member (5), the abutment rod (6) being located between the first knife switch (31) and the second knife switch (32), wherein when the knife switch (3) is in a closed state, the abutment rod (6) abuts against the positioning member (5) to prevent the knife switch (3) from being moved. The movable contact plate (11) is laterally moved in a direction away from the movable contact plate (11), the positioning member (5) is located on the movable contact plate (11), the abutment rod (6) is located on the knife switch (3), the positioning member (5) comprises a positioning plate (51) fixed on the movable contact plate (11) and a positioning rib (52) located above the positioning plate (51), the positioning plate (51) and the positioning rib (52) are arranged in an "L" structure and surround a receiving cavity (53) for the abutment rod (6) to be inserted into, and when the knife switch (3) is in a closed position, the positioning member (5) is located on the movable contact plate (11), and the abutment rod (6) is located on the knife switch (3). In the gate state, the abutment rod (6) is located in the accommodating cavity (53) and abuts against the positioning rib (52); the positioning rib (52) is provided with a guide arc surface (7) for guiding the abutment rod (6) to enter the accommodating cavity (53); the guide arc surface (7) comprises a first arc surface (71) located at the top of the positioning rib (52) and a second arc surface (72) located at the connection between the positioning rib (52) and the positioning plate (51); when the knife switch (3) is in the closed state, the abutment rod (6) and the second arc surface (72) contact, and also includes a pull ring assembly, the pull ring assembly includes a stretching portion (9) and a driven portion (91) arranged below the stretching portion (9), the lock buckle (4) is arranged on the side of the driven portion (91) facing away from the stretching portion (9), and the side of the stretching portion (9) in contact with the driven portion (91) is provided with a hook member (92) for driving the driven portion (91) to rotate so as to separate the lock buckle (4) from the hook plate (41), and the driven portion (91) has an extension plate (93) that abuts against the hook member (92).

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