Control and protection switch electrical apparatus

Abstract

The present invention discloses a control and protection switch electrical appliance, which is characterized in that: it includes an upper shell and a lower shell that are detachably connected. An installation rack and a tripping device are detachably arranged on the upper shell. A handle shaft that is inserted into the lower shell is movably penetrated through the installation rack and the upper shell. A tripping cam is hinged in the lower shell through a first pin shaft, and a first tension spring for promoting its counterclockwise rotation is equipped on the tripping cam. A protrusion that can abut against the tripping cam is arranged at the lower end of the handle shaft, and a torsion spring is sleeved on the handle shaft. The tripping cam of this control and protection switch electrical appliance has a normal state, a fault (overload, open phase, leakage) tripping state, a short-circuit fault tripping state, a manual disconnection state, and a re-latching state after tripping. The upper surface of the upper shell is a control structure, and the lower surface is a tripping structure, with fewer layers, smaller volume, simple structure, functional differentiation, and lower cost.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to a control and protection switch electrical appliance. Background Art

[0002] At present, the control and protection switch electrical appliances provided on the market have multiple layers, large volume, complex structure and high material cost. Summary of the Invention

[0003] In view of the deficiencies of the background art, the technical problem to be solved by the present invention is to provide a control and protection switch electrical appliance with fewer layers, smaller volume, simple structure, function differentiation and lower cost.

[0004] To this end, the present invention is implemented by the following technical solutions:

[0005] A control and protection switch electrical appliance, characterized in that: it includes a detachable upper housing and a lower housing, an installation rack and a release are detachably provided on the upper housing, a handle shaft inserted into the lower housing is movably penetrated through the installation rack and the upper housing, a release cam is hinged in the lower housing by a first pin shaft, and the release cam is equipped with a first tension spring to urge it to rotate counterclockwise. A protrusion that can abut against the release cam is provided at the lower end of the handle shaft, and a torsion spring is sleeved on the handle shaft.

[0006] Further, a linkage block sleeved on the handle shaft is movably penetrated through the installation rack. A second pin shaft is provided between the installation rack and the upper housing, and a stop hook linked with the linkage block is sleeved on the second pin shaft. A first micro switch and a first arc-shaped through hole are provided on the installation rack. A column that can be inserted into the first arc-shaped through hole and can open the first micro switch is provided on one side of the stop hook, and the other side of the stop hook can abut against the release cam. The upper housing is provided with a strip-shaped through hole for the release cam to pass through and move. A second micro switch aligned with the strip-shaped through hole is provided on the installation rack, and the release cam can open the second micro switch.

[0007] Further, the first pin shaft is longitudinally penetrated through the lower housing, and a third pin shaft and a fourth pin shaft are also longitudinally penetrated through the lower housing. A fifth pin shaft is longitudinally penetrated through the release cam. One end of the first tension spring is hooked on the third pin shaft and the other end is hooked on the fifth pin shaft.

[0008] Further, a lock and a swing arm are sleeved on the fourth pin shaft. A first clamping block that is buckled with the lock is provided on the release cam, and a protrusion that can abut against a push rod is provided on the release cam. A second clamping block and a flat plate are provided on one side of the lock. The second clamping block abuts against the push rod of the release, and a limit shaft passing through the lower housing is provided on the flat plate. A second arc-shaped through hole for the limit shaft to move is provided on the lower housing. A second tension spring for urging the lock to rotate clockwise is provided between the flat plate and the lower housing.

[0009] Furthermore, a connecting plate is provided at the lower end of the lower housing. A support is provided below the connecting plate and is connected to the base of the control and protection switch electrical appliance. A plurality of opening grooves are provided inside the support, and a magnetic yoke is provided inside the opening grooves. A swinging hook that can hook the lower end of the swing arm is hinged to the upper end of the support, and an armature is provided at the lower end of the swinging hook.

[0010] Furthermore, a bracket is hinged to the stop hook, and a third tension spring is provided between the stop hook and the mounting frame. A first arc-shaped convex block and a second arc-shaped convex block are connected to the outer ring of the linkage block. One end of the bracket can abut against the outer ring of the linkage block or the first arc-shaped convex block. A spring is provided between the other end of the bracket and the stop hook, and a rotating shaft that abuts against the second arc-shaped convex block is also inserted through the bracket. One end of the torsion spring is inserted into the mounting frame and the other end is inserted into the linkage block.

[0011] Furthermore, the upper housing is mounted on the lower housing through a plurality of first bolts. A positioning plate that bends downward is provided on the right side of the upper housing. A through hole for inserting the positioning plate is provided on the lower housing. A plurality of second bolts that are screwed to the upper housing and the lower housing are screwed to the mounting frame. The release is mounted on the positioning plate through a third bolt.

[0012] Furthermore, the connecting plate and the support are detachably connected through a fourth bolt. A sixth pin shaft is inserted through the support. A fourth tension spring is provided between the swing arm and the connecting plate. A fifth tension spring is provided between the sixth pin shaft and the swinging hook.

[0013] After adopting the above technical solution, the operating mechanism has a normal state, a fault (overload, open phase, leakage) tripping state, a short-circuit fault tripping state, a manual disconnection state, and a re-latching state after tripping. The upper part of the upper housing is the control structure and the lower part is the tripping structure. It has fewer layers, a smaller volume, a simple structure, clear function division, and lower cost. Description of the Drawings

[0014] The present invention has the following drawings:

[0015] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0016] Figure 2 is a partial structure schematic diagram of the present invention in the normal state;

[0017] Figure 3 is a partial structure schematic diagram of the present invention in the fault (overload, open phase, leakage) tripping state;

[0018] Figure 4 is a partial structure schematic diagram of the present invention in the short-circuit fault tripping state;

[0019] Figure 5 is a partial structure schematic diagram of the present invention in the manual disconnection state;

[0020] Figure 6 This is a schematic diagram of the partial structure of the present invention in the re-latching state after tripping;

[0021] Figure 7 This is a three-dimensional structure diagram of the stop hook, linkage block and tripping cam of the present invention;

[0022] Figure 8 This is a three-dimensional structure diagram of the connecting plate, support, swing arm and swing hook in the present invention.

[0023] Reference numerals: 1, upper housing; 2, lower housing; 3, mounting bracket; 4, handle shaft; 5, tripping cam; 6, protrusion; 7, torsion spring; 8, linkage block; 9, second pin shaft; 10, stop hook; 11, first microswitch; 12, column; 13, strip-shaped through hole; 14, second microswitch; 15, bracket; 16, first arc-shaped protrusion; 17, second arc-shaped protrusion; 18, spring; 19, rotating shaft; 20, first bolt; 21, positioning plate; 22, through hole; 23, second bolt; 24, release; 25, first pin shaft; 26, first tension spring; 27, third pin shaft; 28, fourth pin shaft; 29, fifth pin shaft; 30, lock; 31, swing arm; 32, first clamping block; 33, second clamping block; 34, flat plate; 35, push rod; 36, limit shaft; 37, electromagnetic pressure plate; 38, second tension spring; 39, connecting plate; 40, support; 41, opening groove; 42, magnetic yoke; 43, swing hook; 44, armature; 45, third bolt; 46, protrusion; 47, third tension spring; 48, fourth bolt; 49, sixth pin shaft; 50, fourth tension spring; 51, fifth tension spring. Detailed implementation manners

[0024] As shown in the above-mentioned drawings, the control and protection switch electric appliance provided by the present invention is characterized in that it includes a detachable upper housing 1 and a lower housing 2. An installation frame 3 and a tripping device 24 (the tripping device belongs to the prior art and its working principle will not be described herein) are detachably provided on the upper housing 1. A handle shaft 4 inserted into the lower housing 2 is movably penetrated through the installation frame 3 and the upper housing 1. A tripping cam 5 is hinged in the lower housing 2 through a first pin shaft 25, and a first tension spring 26 for urging it to rotate counterclockwise is provided on the tripping cam 5. A protrusion 6 that can abut against the tripping cam 5 is provided at the lower end of the handle shaft 4, and a torsion spring 7 is sleeved on the handle shaft 4. A linkage block 8 sleeved on the handle shaft 4 is movably penetrated through the installation frame 3. A second pin shaft 9 is provided between the installation frame 3 and the upper housing 1. A stop hook 10 linked with the linkage block 8 is sleeved on the second pin shaft 9. A first microswitch 11 and a first arc-shaped through hole are provided on the installation frame 3. A column 12 that is inserted into the first arc-shaped through hole and can turn on the first microswitch 11 is provided on one side of the stop hook 10. The other side of the stop hook 10 can abut against the tripping cam 5. A strip-shaped through hole 13 through which the tripping cam 5 passes out and moves is provided on the upper housing 1. A second microswitch 14 aligned with the strip-shaped through hole 13 is provided on the installation frame 3. The tripping cam 5 can turn on the second microswitch 14. The first pin shaft 25 is longitudinally penetrated through the lower housing 2, and a third pin shaft 27 and a fourth pin shaft 28 are also longitudinally penetrated through the lower housing 2. A fifth pin shaft 29 is longitudinally penetrated through the tripping cam 5. One end of the first tension spring 26 is hooked on the third pin shaft 27 and the other end is hooked on the fifth pin shaft 29. A lock catch 30 and a swing arm 31 are sleeved on the fourth pin shaft 28. A first clamping block 32 for clamping with the lock catch 30 is provided on the tripping cam 5, and a protrusion 46 that can abut against a push rod 35 is provided on the tripping cam 5. A second clamping block 33 and a flat plate 34 are provided on one side of the lock catch 30. The second clamping block 33 abuts against the push rod 35 of the tripping device 24. A limit shaft 36 passing through the lower housing 2 is provided on the flat plate 34. A second arc-shaped through hole for the limit shaft 36 to move is provided on the lower housing 2. A second tension spring 38 for urging the lock catch 30 to rotate clockwise is provided between the flat plate 34 and the lower housing 2. A connecting plate 39 is provided at the lower end of the lower housing 2. A support 40 connected to the base of the control and protection switch electric appliance is provided under the connecting plate 39. A plurality of opening grooves 41 are provided in the support 40, and a magnetic yoke 42 is provided in the opening grooves 41. A swing hook 43 that can hook the lower end of the swing arm 31 is hinged at the upper end of the support 40. An armature 44 is provided at the lower end of the swing hook 43. A bracket 15 is hinged on the stop hook 10, and a third tension spring 47 is provided between the stop hook 10 and the installation frame 3. An interconnected first arc-shaped convex block 16 and second arc-shaped convex block 17 are provided on the outer circle of the linkage block 8. One end of the bracket 15 can abut against the outer circle of the linkage block 8 or the first arc-shaped convex block 16. A spring 18 is provided between the other end of the bracket 15 and the stop hook 10. A rotating shaft 19 that abuts against the second arc-shaped convex block 17 is also penetrated through the bracket 15.One end of the torsion spring 7 is inserted into the mounting bracket 3, and the other end is inserted into the linkage block 8. The upper housing 1 is mounted on the lower housing 2 by a plurality of first bolts 20. A positioning plate 21 bent downward is provided on the right side of the upper housing 1. A through hole 22 for inserting the positioning plate 21 is provided on the lower housing 2. A plurality of second bolts 23 that are screwed to the upper housing 1 and the lower housing 2 are screwed to the mounting bracket 3. The release 24 is mounted on the positioning plate 21 by a third bolt 45. The connecting plate 39 and the support 40 are detachably connected by a fourth bolt 48. A sixth pin shaft 49 is passed through the support 40. A fourth tension spring 50 is provided between the swing arm 31 and the connecting plate 39. A fifth tension spring 51 is provided between the sixth pin shaft 49 and the swing hook 43.,

[0025] Referring Figure 2 As shown, it is a partial structural schematic diagram of the present invention in a normal state. At this time, the first latch 32 of the release cam 5 is latched with the latch 30, and the upper end of the release cam 5 abuts against the actuating reed of the second microswitch 14 to keep the second microswitch 14 in an open state. At the same time, under the action of the third tension spring 47, the stop hook 10 causes the column 12 to abut against the actuating reed of the first microswitch 11 to keep the first microswitch 11 in an open state.

[0026] Referring Figure 3 As shown, it is a partial structural schematic diagram of the present invention in a fault (overload, open phase, leakage) tripping state. From Figure 2 state to Figure 3 state, when a fault (overload, open phase, leakage) occurs in the equipment, the release 24 trips, causing the push rod 35 to move leftward to push the latch 30 to rotate counterclockwise, thereby causing the first latch 32 to disengage from the latch 30. At the same time, the upper end of the release cam 5 disengages from the second microswitch 14, and the second microswitch 14 disconnects to release a tripping signal. At the same time, the release cam 5 pushes the electromagnetic pressure plate 37 downward.

[0027] Referring Figure 4 As shown, it is a partial structural schematic diagram of the present invention in a short - circuit fault tripping state. From Figure 2 state to Figure 4 state, since the wire passes through the opening groove 41, when a short - circuit occurs in the equipment, a large current passes through the wire, causing the armature 44 and the magnet to attract each other. The armature 44 drives the swing hook 43 to rotate clockwise, and the swing hook 43 drives the swing arm 31 and the latch 30 to rotate counterclockwise, causing the latch 30 to disengage from the first latch 32. The release cam 5 rotates counterclockwise under the torque of the first tension spring 26. The upper end of the release cam 5 disengages from the second microswitch 14, and the second microswitch 14 disconnects to release a tripping signal. At the same time, the release cam 5 pushes the electromagnetic pressure plate 37 downward.

[0028] Referring Figure 5 As shown, it is a partial structural schematic diagram of the present invention in a manually - disconnected state. From Figure 2The state transitions to Figure 5 When in the state, rotate the handle shaft 4 clockwise to drive the linkage block 8 to rotate clockwise. The linkage block 8 cooperates with the rotating shaft 19 to make the stop hook 10 rotate clockwise, so that the column 12 disengages from the first microswitch 11, and the first microswitch 11 controls the energization of the electromagnetic system.

[0029] Refer to Figure 6 and Figure 8 As shown, it is a partial structural schematic diagram of the invention in the re-latching state after tripping. From Figure 3 or Figure 4 When transitioning to Figure 6 the state, rotate the handle shaft 4 counterclockwise to drive the protrusion 6 to rotate counterclockwise. The protrusion 6 pushes the tripping cam 5 to rotate clockwise. The protrusion 46 of the tripping cam 5 pushes the push rod 35 to move to the right to reset and store energy. The latch 30 and the swing arm 31 rotate clockwise to reset under the torsion of the second tension spring 38. At the same time, the first latch 32 of the tripping cam 5 engages with the latch 30. The swing arm 31 rotates clockwise to reset under the action of the fourth tension spring 50. The swing hook 43 rotates counterclockwise to reset under the action of the fifth tension spring 51, so that the armature 44 disengages from the magnetic yoke 42.

[0030] Refer to Figure 7 As shown, the outer circle of the linkage block 8 or the first arc-shaped convex block 16 can abut against the bracket 15. The second arc-shaped convex block 17 of the linkage block 8 can abut against the rotating shaft 19. The bracket 15 abuts against three parts of the linkage block 8, representing three positions of the stop hook 10. And a spring 18 is provided between the bracket 15 and the stop hook 10 to ensure that the bracket 15 can firmly abut against the outer circle of the linkage block 8 or the first arc-shaped convex block 16 or the second arc-shaped convex block 17, making the action of the stop hook 10 more accurate and stable.

[0031] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Control and protection switch electrical appliance, characterized in that: It includes an upper shell and a lower shell that are detachably connected. An installation frame and a tripping device are detachably provided on the upper shell. A handle shaft that is inserted into the lower shell is movably passed through the installation frame and the upper shell. A tripping cam is hinged in the lower shell by a first pin shaft, and a first tension spring for urging it to rotate counterclockwise is provided on the tripping cam. A protrusion that can abut against the tripping cam is provided at the lower end of the handle shaft, and a torsion spring is sleeved on the handle shaft. A linkage block sleeved on the handle shaft is movably passed through the installation frame. A second pin shaft is provided between the installation frame and the upper shell, and a stop hook linked with the linkage block is sleeved on the second pin shaft. A first microswitch and a first arc-shaped through hole are provided on the installation frame. A column that is inserted into the first arc-shaped through hole and can turn on the first microswitch is provided on one side of the stop hook, and the other side of the stop hook can abut against the tripping cam. A strip-shaped through hole for the tripping cam to pass through and move is provided on the upper shell. A second microswitch aligned with the strip-shaped through hole is provided on the installation frame, and the tripping cam can turn on the second microswitch. The first pin shaft is longitudinally passed through the lower shell, and a third pin shaft and a fourth pin shaft are also longitudinally passed through the lower shell. A fifth pin shaft is longitudinally passed through the tripping cam. One end of the first tension spring is hooked on the third pin shaft and the other end is hooked on the fifth pin shaft. A lock catch and a swing arm are sleeved on the fourth pin shaft. A first clamping block for clamping with the lock catch is provided on the tripping cam, and a protrusion that can abut against a push rod is provided on the tripping cam. A second clamping block and a flat plate are provided on one side of the lock catch. The second clamping block abuts against the push rod of the tripping device. A limit shaft that passes through the lower shell is provided on the flat plate. A second arc-shaped through hole for the limit shaft to move is provided on the lower shell. A second tension spring for urging the lock catch to rotate clockwise is provided between the flat plate and the lower shell. A bracket is hinged on the stop hook, and a third tension spring is provided between the stop hook and the installation frame. A first arc-shaped convex block and a second arc-shaped convex block are connected to the outer ring of the linkage block. One end of the bracket can abut against the outer ring of the linkage block or the first arc-shaped convex block. A spring is provided between the other end of the bracket and the stop hook, and a rotating shaft that abuts against the second arc-shaped convex block is also passed through the bracket. One end of the torsion spring is inserted into the installation frame and the other end is inserted into the linkage block. The upper shell is installed on the lower shell by a plurality of first bolts, and a positioning plate bent downward is provided on the right side of the upper shell. A through hole for the positioning plate to be inserted is provided on the lower shell. A plurality of second bolts that are screwed with the upper shell and the lower shell are screwed on the installation frame. The tripping device is installed on the positioning plate by a third bolt.

2. The control and protection switch device according to claim 1, characterized in that: A connecting plate is provided at the lower end of the lower shell. A support for connecting with the base of the control and protection switch electrical appliance is provided under the connecting plate. A plurality of opening grooves are provided in the support, and yokes are provided in the opening grooves. A swinging hook that can hook the lower end of the swing arm is hinged at the upper end of the support, and an armature is provided at the lower end of the swinging hook.

3. The control and protection switch electrical appliance according to claim 2, characterized in that: The connecting plate and the support are detachably connected by a fourth bolt. A sixth pin shaft is passed through the support. A fourth tension spring is provided between the swing arm and the connecting plate. A fifth tension spring is provided between the sixth pin shaft and the swinging hook.

Images