Novel contact knife holder structure

Abstract

The utility model relates to the technical field of contact knife holders, in particular to a novel contact knife holder structure, which comprises a contact knife holder main body, a closing groove and an external lead, the closing groove is fixedly arranged in the contact knife holder main body, and the external lead is fixedly connected to the bottom end of the contact knife holder main body. The front end of the contact knife holder main body is provided with a contact knife switch-on safety protection structure, the contact knife switch-on safety protection structure comprises a rotating shaft, a contact knife blade and an insulating pull rod, and the outer side of the rotating shaft is fixedly connected with two connecting rings. According to the novel contact knife holder structure, the rotating shaft can drive the connecting ring to turn over at the front end of the contact knife holder main body, the protection plate can be installed on the outer side of a closed contact knife blade by the corresponding connecting blocks, and after the contact knife blade is pulled to be inserted into the corresponding inserting plate to complete closing, the protection plate can be vertically buckled on the outer wall of the contact knife holder main body, so that the contact knife holder main body is protected from being damaged. And the protection plate can shield an exposed gap to improve the use safety, so that the use of the novel contact knife holder structure is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of a knife contact seat, in particular to a novel knife contact seat structure. Background Art

[0002] The fuse-type disconnector in the related art mainly includes an outer shell, in which a fuse body for protecting an external circuit is installed, a contact knife for connecting to the external circuit is arranged on the fuse body, and a contact knife seat for inserting adjacent contacts is also installed on the outer shell. One end of the contact knife seat is used to connect to the external circuit, and by inserting the contact knife on the fuse body into the contact knife seat, the fuse-type disconnector completes the closing action.

[0003] For example, the authorization announcement number "CN211538422U" is named a contact knife holder for a fuse-type isolating switch. Although the retaining spring set between the contact plates on both sides can apply pressure to the contact plates to overcome their own deformation, thereby further extending the service life of the contact plates and making the contact plates more stable and securely press the contact knives, the existing contact knife holder for fuse-type isolating switches has the contact knife blades that need to be flipped and rotated along the contact knife holder to open and close the circuit. However, when the contact knife holder is in the closed state, two or more contact knife blades will be inserted into the inside of the contact knife holder plug-in slot. At this time, the contact position between the contact knife blades and the contact knife holder will be exposed to the outside with a gap. The gap lacks a protective structure, which makes it easy to cause leakage short circuit wind direction if metal products or conductive objects are accidentally inserted into the exposed gap, which greatly affects the safety of the contact knife holder for the fuse-type isolating switch.

[0004] At the same time, in order to ensure smooth power-on after the contact holder is closed and reduce the problem of poor contact, the contact holder must be inserted into the corresponding contact blade. At present, the contact holder for the fuse type disconnector basically requires the operator to manually push the switch to close. In this way, the contact between the contact holder and the contact blade cannot be completely guaranteed to be in good contact each time the switch is closed, which affects the working effect of the contact holder for the fuse type disconnector. Summary of the invention

[0005] The utility model aims to solve the problems of low safety and low working effect of a contact knife seat for a fuse type isolating switch, and proposes a new contact knife seat structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel contact knife seat structure, comprising a contact knife seat body, a closing slot and an external wire, wherein the closing slot is fixedly installed inside the contact knife seat body, the external wire is fixedly connected to the bottom end of the contact knife seat body, and a contact knife closing safety protection structure is provided at the front end of the contact knife seat body, and the contact knife closing safety protection structure comprises a rotating shaft, a contact knife blade and an insulating pull rod, the rotating shaft is rotatably connected to the bottom end of the contact knife seat body, two connecting rings are fixedly connected to the outside of the rotating shaft, contact knife blades are fixedly connected above the two connecting rings, insulating pull rods are fixedly installed on the tops of the two contact knife blades, connecting blocks are fixedly connected to the outer walls of the two contact knife blades, and protective plates are fixedly installed on the outer sides of multiple connecting blocks.

[0007] Preferably, a contact blade connection structure is provided on the inner side of the closing slot;

[0008] The contact blade seat wiring structure includes a plug-in board, a wiring hole and a wiring post;

[0009] The two plug-in boards are fixedly installed inside the closing slot, the two wiring holes are fixedly opened on both sides of the outer wall of the contact knife seat body, two wiring posts are fixedly installed inside the two wiring holes, the outer sides of the two wiring posts are movably connected with connecting wires, the top ends of the two wiring posts are threadedly connected with two screws, the inner sides of the two screws are movably connected with the ends of the connecting wires, and the other ends of the wiring posts are electrically connected to the plug-in board.

[0010] Preferably, the two sides of the two contact blades are movably connected to the inner side of the plug board, the bottom ends of the two contact blades are electrically connected to the external wires, and the inner side of the protection plate is movably connected to the outer wall of the contact blade seat body.

[0011] Preferably, a plurality of fixing strips are fixedly mounted on the outer wall of the knife contact seat body, a plurality of mounting screws are threadedly connected to the inner sides of the plurality of fixing strips, and the plurality of fixing strips are arranged parallel to each other.

[0012] Preferably, a contact knife seat closing detection structure is provided at the top of the contact knife seat body;

[0013] The contact knife seat closing detection structure comprises a push block, a pressure sensor and a convex block;

[0014] The pushing block is movably connected in front of the top end of the knife touch seat body, a plurality of return springs are fixedly installed on the rear side of the pushing block, the other ends of the plurality of return springs are fixedly installed inside the knife touch seat body, a plurality of pressure sensors are fixedly installed inside the knife touch seat body, the front ends of the plurality of pressure sensors are arranged opposite to the rear side of the pushing block, the protrusion is fixedly installed on the top end of the knife touch seat body, and an indicator light is fixedly installed in front of the protrusion.

[0015] Preferably, the outer wall of the insulating pull rod is movably connected to the front end of the push block, and one side of the contact blade is movably connected to the inner side of the closing slot.

[0016] The utility model proposes a novel contact knife seat structure, which has the beneficial effect that: the connecting ring can be turned over at the front end of the contact knife seat body by rotating the shaft, and the protection plate will be installed on the outside of the contact knife blade of the closing switch by the connecting block. When the contact knife blade is pulled and inserted into the corresponding plug-in board to complete the closing, the protection plate will be vertically buckled on the outer wall of the contact knife seat body. The protection plate can cover the leaking gap to improve the safety of use, thereby making the use of the novel contact knife seat structure safer.

[0017] When the contact blade on the contact blade holder body is in the closed state, the insulating pull rod will fit against the outer wall of the contact blade holder body, so that the insulating pull rod will squeeze the push block to slide inward. The pressure sensor is a relatively mature existing technology at this stage, and can convert the external pressure into an electrical signal. When the push block squeezes the internal pressure sensor, the indicator light in the circuit will be connected to the power supply and light up. The light of the indicator light can indicate that the contact blade is in the closed state. The use effect of the new contact blade holder structure can be improved by monitoring the contact blade holder in the closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0019] Figure 2 for Figure 1 A front cross-sectional schematic diagram of

[0020] Figure 3 for Figure 1 A right side cross-sectional schematic diagram of

[0021] Figure 4 for Figure 3 Enlarged cross-sectional view of part A in the middle;

[0022] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0023] Figure 6 for Figure 3 Enlarged cross-sectional view of part C in the middle.

[0024] In the figure: 1. contact knife seat body, 2. closing slot, 3. external wire, 4. contact knife closing safety protection structure, 41. rotating shaft, 42. connecting ring, 43. contact knife blade, 44. connecting block, 45. protection plate, 46. insulating pull rod, 5. contact knife seat wiring structure, 51. plug-in board, 52. wiring hole, 53. screw, 54. connecting wire, 55. terminal, 61. fixing strip, 62. mounting screw, 7. contact knife seat closing detection structure, 71. pushing block, 72. reset spring, 73. pressure sensor, 74. bump, 75. indicator light. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] See also Figure 1-6 A novel contact knife seat structure comprises a contact knife seat body 1, a closing slot 2 and an external wire 3, the closing slot 2 is fixedly installed inside the contact knife seat body 1, the external wire 3 is fixedly connected to the bottom end of the contact knife seat body 1, and a contact knife closing safety protection structure 4 is provided at the front end of the contact knife seat body 1, and the contact knife closing safety protection structure 4 comprises a rotating shaft 41, a contact knife blade 43 and an insulating pull rod 46, the rotating shaft 41 is rotatably connected inside the bottom end of the contact knife seat body 1, and the rotating shaft 41 can be turned over at the front end of the contact knife seat body 1 with a connecting ring 42, and two connecting rings 42 are fixedly connected to the outer side of the rotating shaft 41, and contact knife blades 43 are fixedly connected above the two connecting rings 42, and the contact knife blades 43 are made of a copper-nickel alloy with good electrical conductivity and firmness, and insulating pull rods 46 are fixedly installed on the tops of the two contact knife blades 43, and the insulating pull rods 46 are made of natural rubber material, and the insulating pull rods 46 can be convenient for users to pull by hand to close and open the switch;

[0027] The outer walls of the two contact blades 43 are fixedly connected with a connection block 44, and the outer sides of the multiple connection blocks 44 are fixedly installed with a protection plate 45, which is made of an insulating, non-conductive, smooth, and burr-free wooden board. The protection plate 45 will be installed on the outer side of the contact blade 43 of the closed switch by the connection block 44. When the contact blade 43 is pulled and inserted into the corresponding plug board 51 to complete the closing, the protection plate 45 will be vertically buckled on the outer wall of the contact blade seat body 1, and the protection plate 45 can cover the gap of leakage to improve the safety of use;

[0028] By rotating the shaft 41, the connecting ring 42 can be turned over at the front end of the contact knife seat body 1. The contact knife blade 43 is made of a copper-nickel alloy with good conductivity and firmness. The insulating pull rod 46 is made of natural rubber material. The insulating pull rod 46 can be convenient for users to hold and pull to close and open the switch. The protection plate 45 is made of an insulating, non-conductive, smooth, burr-free wooden board. The protection plate 45 will be installed on the outside of the closed contact knife blade 43 by a connecting block 44. When the contact knife blade 43 is pulled and inserted into the corresponding plug-in board 51 to complete the closing, the protection plate 45 will be vertically buckled on the outer wall of the contact knife seat body 1. The protection plate 45 can block the leakage gap to improve the safety of use, thereby making the use of the new contact knife seat structure safer.

[0029] See also Figure 1-6 A contact knife seat wiring structure 5 is provided on the inner side of the closing slot 2. The contact knife seat wiring structure 5 includes a plug-in board 51, a wiring hole 52 and a terminal 55. The two plug-in boards 51 are fixedly installed inside the closing slot 2. The plug-in board 51 is made of metal copper with strong conductive performance. The plug-in board 51 is used to dock the flipped contact knife blade 43. The two wiring holes 52 are fixedly opened on both sides of the outer wall of the contact knife seat body 1. Two terminals 55 are fixedly installed inside the two wiring holes 52. The terminals 55 are made of copper cylindrical terminals 55. The terminals 55 can be wound with connecting wires 54 for docking with external cables. The outer sides of the two terminals 55 are movably connected with the connecting wires 54. The top ends of the two terminals 55 are threadedly connected with two screws 53. The inner sides of the two screws 53 are movably connected with the ends of the connecting wires 54. When the external cable connecting wire 54 is wound around the outer side of the terminal 55, the screw 53 is rotated and screwed into the top of the terminal 55. The screw 53 squeezes the connecting wire 54 downward to fix it. The other end of the terminal 55 is electrically connected to the plug-in board 51.

[0030] The two sides of the two contact blades 43 are movably connected to the inner side of the plug board 51, the bottom ends of the two contact blades 43 are electrically connected to the external wire 3, the inner side of the protection plate 45 is movably connected to the outer wall of the contact blade seat body 1, and the outer wall of the contact blade seat body 1 is fixedly installed with multiple fixing strips 61, and the inner sides of the multiple fixing strips 61 are threadedly connected with multiple mounting screws 62, and the multiple fixing strips 61 are arranged parallel to each other.

[0031] See also Figure 1-6The top of the contact knife seat body 1 is provided with a contact knife seat closing detection structure 7, which includes a push block 71, a pressure sensor 73 and a protrusion 74. The push block 71 is movably connected to the front of the top of the contact knife seat body 1, and the reset spring 72 can push the push block 71 back to its original position. A plurality of reset springs 72 are fixedly installed on the rear side of the push block 71. When the contact knife blade 43 on the contact knife seat body 1 is in the closed state, the insulating pull rod 46 will fit with the outer wall of the contact knife seat body 1, so that the insulating pull rod 46 will squeeze the push block 71 to slide inward, and the other ends of the plurality of reset springs 72 are fixedly installed inside the contact knife seat body 1, and the plurality of pressure sensors 73 are fixed. Installed inside the contact knife seat body 1, the pressure sensor 73 belongs to the relatively mature existing technology at this stage, which can convert the external pressure received into an electrical signal. The front ends of the multiple pressure sensors 73 are arranged opposite to the rear side of the push block 71. When the push block 71 squeezes the internal pressure sensor 73, the indicator light 75 in the circuit will be connected to the power supply and light up. The indicator light 75 can be used to know that the contact knife blade 43 is in the closed state. The protrusion 74 is fixedly installed on the top of the contact knife seat body 1, and the indicator light 75 is fixedly installed in front of the protrusion 74. The outer wall of the insulating pull rod 46 is movably connected to the front end of the push block 71, and one side of the contact knife blade 43 is movably connected to the inner side of the closing slot 2;

[0032] When the contact blade 43 on the contact blade holder body 1 is in the closed state, the insulating pull rod 46 will fit with the outer wall of the contact blade holder body 1, so that the insulating pull rod 46 will squeeze the push block 71 to slide inward. The pressure sensor 73 belongs to the relatively mature existing technology at this stage, and can convert the external pressure into an electrical signal. When the push block 71 squeezes the internal pressure sensor 73, the indicator light 75 in the circuit will be connected to the power supply and light up. The light of the indicator light 75 can be used to know that the contact blade 43 is in the closed state. The use effect of the new contact blade holder structure is improved by monitoring the contact blade holder in the closed state.

[0033] Working principle:

[0034] When using the new contact knife seat structure to connect the circuit directly, it has the function of manually controlling the circuit closing and opening:

[0035] The closing external shielding protection structure of the new contact blade structure:

[0036] The connecting ring 42 can be turned over at the front end of the contact blade seat body 1 by rotating the shaft 41. The contact blade 43 is made of a copper-nickel alloy with good conductivity and firmness. The insulating pull rod 46 is made of natural rubber material. The insulating pull rod 46 can be easily pulled by the user to close and open the switch. The protection plate 45 is made of an insulating, non-conductive, smooth, burr-free wooden board. The protection plate 45 will be installed on the outside of the contact blade 43 of the closing switch by the connecting block 44. When the contact blade 43 is pulled and inserted into the corresponding plug-in board 51 to complete the closing, the protection plate 45 will be vertically buckled on the outer wall of the contact blade seat body 1. The protection plate 45 can cover the gap of leakage to improve the safety of use.

[0037] External wiring structure of the new contact blade structure:

[0038] The plug board 51 is made of copper with strong conductive properties. The plug board 51 is used to connect the flipped contact blade 43. The terminal 55 is made of copper cylindrical. The terminal 55 can be wound with a connecting wire 54 for connecting external cables. The inner sides of the two screws 53 are movably connected to the ends of the connecting wire 54. When the external cable connecting wire 54 is wound around the outer side of the terminal 55, the screw 53 is rotated and screwed into the top of the terminal 55, and the screw 53 presses the connecting wire 54 downward to fix it.

[0039] The closing detection structure of the new contact knife seat structure:

[0040] When the contact blade 43 on the contact blade seat body 1 is in the closed state, the insulating pull rod 46 will fit against the outer wall of the contact blade seat body 1, so that the insulating pull rod 46 will squeeze the push block 71 to slide inward. The pressure sensor 73 belongs to the relatively mature existing technology at this stage, and can convert the external pressure into an electrical signal. When the push block 71 squeezes the internal pressure sensor 73, the indicator light 75 in the circuit will be connected to the power supply and light up. The light of the indicator light 75 indicates that the contact blade 43 is in the closed state.

[0041] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A novel contact blade holder structure, comprising a contact blade holder body (1), a closing slot (2) and an externally connected wire (3), characterized in that: The closing slot (2) is fixedly mounted inside the contact blade seat body (1); the external connecting wire (3) is fixedly connected to the bottom end of the contact blade seat body (1); a contact blade closing safety protection structure (4) is provided at the front end of the contact blade seat body (1); the contact blade closing safety protection structure (4) comprises a rotating shaft (41), a contact blade (43) and an insulating pull rod (46); the rotating shaft (41) is rotatably connected inside the bottom end of the contact blade seat body (1); two connecting rings (42) are fixedly connected to the outside of the rotating shaft (41); the upper parts of the two connecting rings (42) are fixedly connected to the contact blades (43); the top parts of the two contact blades (43) are fixedly mounted with insulating pull rods (46); the outer walls of the two contact blades (43) are fixedly connected to connecting blocks (44); and the outer parts of the plurality of connecting blocks (44) are fixedly mounted with protective plates (45).

2. According to claim 1, the new type of knife contact seat structure is characterized in that: A contact blade seat wiring structure (5) is provided on the inner side of the closing slot (2); The contact blade seat wiring structure (5) comprises a plug board (51), a wiring hole (52) and a wiring post (55); The two plug-in boards (51) are fixedly installed inside the closing slot (2), the two wiring holes (52) are fixedly opened on both sides of the outer wall of the contact knife seat body (1), and two wiring posts (55) are fixedly installed inside the two wiring holes (52). The outer sides of the two wiring posts (55) are movably connected to the connecting wire (54), the top ends of the two wiring posts (55) are threadedly connected to two screws, the inner sides of the two screws are movably connected to the ends of the connecting wire (54), and the other ends of the wiring posts (55) are electrically connected to the plug-in board (51).

3. The novel knife contact seat structure according to claim 1 is characterized in that: The two sides of the two contact blades (43) are movably connected to the inner side of the plug board (51), the bottom ends of the two contact blades (43) are electrically connected to the external wire (3), and the inner side of the protection plate (45) is movably connected to the outer wall of the contact blade seat body (1).

4. The novel knife contact seat structure according to claim 1 is characterized in that: A plurality of fixing strips (61) are fixedly mounted on the outer wall of the knife contact seat body (1), a plurality of mounting screws are threadedly connected to the inner sides of the plurality of fixing strips (61), and the plurality of fixing strips (61) are arranged parallel to each other.

5. The novel knife contact seat structure according to claim 1 is characterized in that: A knife contact seat closing detection structure (7) is provided at the top of the knife contact seat body (1); The contact blade holder closing detection structure (7) comprises a push block (71), a pressure sensor (73) and a protrusion (74); The pushing block (71) is movably connected to the front of the top of the knife seat body (1); a plurality of return springs (72) are fixedly installed on the rear side of the pushing block (71); the other ends of the plurality of return springs (72) are fixedly installed inside the knife seat body (1); a plurality of pressure sensors (73) are fixedly installed inside the knife seat body (1); the front ends of the plurality of pressure sensors (73) are arranged opposite to the rear side of the pushing block (71); the protrusion (74) is fixedly installed on the top of the knife seat body (1); and an indicator light (75) is fixedly installed in front of the protrusion (74).

6. The novel knife contact seat structure according to claim 5 is characterized in that: The outer wall of the insulating pull rod (46) is movably connected to the front end of the push block (71), and one side of the contact blade (43) is movably connected to the inner side of the closing slot (2).

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