CN110808183A

CN110808183A - External manual operation device for circuit breaker

Info

Publication number: CN110808183A
Application number: CN201911085303.7A
Authority: CN
Inventors: 沈金珠
Original assignee: YUEQING SHANGKE ELECTRIC CO Ltd
Current assignee: YUEQING SHANGKE ELECTRIC CO Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-02-18

Abstract

The invention discloses an external manual operation device for a circuit breaker, which comprises a mounting seat and a knob; the knob is arranged on the upper part of the mounting seat and is rotationally switched between a brake-off state position and a brake-on state position, the inner end of the knob is provided with a connecting structure connected with the linkage shaft, the mounting seat is provided with an insertion hole for the linkage shaft to pass through, and the knob locking device further comprises a locking structure for locking the knob at the brake-off state position; have in the mount pad and be connected with the knob to keep synchronous pivoted first rotatory piece, have conflict portion on the first rotatory piece, be equipped with first buffer unit and second buffer unit in the mount pad on the rotatory route of conflict portion, conflict portion and first buffer unit conflict on the first rotatory piece when the knob rotates to separating brake state position, conflict portion and second buffer unit conflict on the first rotatory piece when the knob rotates to closing brake state position. The invention has reasonable structure, good durability and good use effect.

Description

External manual operation device for circuit breaker

Technical Field

The invention relates to an external manual operation device for a circuit breaker, and belongs to the technical field of circuit breaker opening and closing control.

Background

The manual operation device is usually installed on a cabinet door of a switch cabinet as an accessory device of a circuit breaker for wiring, and is used for performing on-off interlocking operation on the circuit breaker installed in the cabinet door from the outside of the cabinet door. The manual operation device is usually provided with a knob, and a worker rotates the knob outside the cabinet body to drive the interlocking mechanism to transmit a series of forces through the linkage shaft and then drive the circuit breaker to act. When the existing manual operation device is used, usually, a worker exerts great force, when the knob rotates to the opening state position/closing state position, the limiting part on the knob and the corresponding stopping part on the mounting seat collide directly to stop, and the design has the defect that after the manual operation device is frequently used for a long time, the mutually collided parts are easy to deform or break, so that the manual operation device fails.

Disclosure of Invention

In view of the above, the present invention is directed to provide an external manual operation device for a circuit breaker having high durability.

The technical scheme for realizing the purpose of the invention is as follows:

an external manual operation device for a circuit breaker comprises a mounting seat and a knob;

the rotary knob is arranged on the upper part of the mounting seat and is rotationally switched between a brake-off state position and a brake-on state position, the inner end of the rotary knob is provided with a connecting structure connected with the linkage shaft, the mounting seat is provided with an insertion hole for the linkage shaft to pass through, and the rotary knob further comprises a locking structure for locking the rotary knob at the brake-off state position;

have in the mount pad with the knob is connected to keep synchronous pivoted first rotatory piece, conflict portion has on the first rotatory piece, the mount pad is inherent first buffer unit and second buffer unit are equipped with on the rotatory route of conflict portion, the knob rotate extremely when separating brake state position on the first rotatory piece conflict portion with first buffer unit conflicts, the knob rotate extremely when closing state position on the first rotatory piece conflict portion with second buffer unit conflicts.

In the above technical solution, the first buffer member and the second buffer member are helical compression springs.

In the above technical solution, the mounting base has a first slot and a second slot, the first end of the first buffer component is clamped in the first slot, and the first end of the second buffer component is clamped in the second slot;

when the knob rotates to the opening state position, the collision part on the first rotating block collides with the second end of the first buffering component, and when the knob rotates to the closing state position, the collision part on the first rotating block collides with the second end of the second buffering component.

In the technical scheme, the locking structure comprises a locking rod arranged in a mounting hole in the knob, a first elastic component providing upward elastic force for the locking rod and a locking hole correspondingly arranged on the mounting seat, the locking rod is located in the mounting hole under the action of the first elastic component in a normal state, a padlock hole is formed in the top of the mounting hole in the knob, when the knob is located at a switching-off state position, the locking rod and the locking hole are inserted into the locking hole in a downward moving mode through applying downward pressure on the locking rod, and at the moment, a padlock is arranged in the padlock hole to limit the upward moving of the locking rod, so that the knob is locked.

In the above technical solution, the first elastic member is a helical compression spring.

In the above technical solution, a second rotating block which rotates synchronously with the knob is rotatably disposed between the mounting seat and the knob, the knob is provided with a limiting rod which can move up and down and a second elastic component which provides downward elastic force for the limiting rod, the second rotating block is provided with a first through hole through which the lower end of the limiting rod passes and a second through hole through which the lower end of the locking rod passes, the first elastic component is sleeved on the locking rod, the upper end and the lower end of the first elastic component are respectively abutted against the locking rod and the second rotating block, the mounting seat is provided with a first limiting protrusion and a second limiting protrusion on a rotating path of the limiting rod, the lower end of the limiting rod is abutted against the mounting seat under the elastic force of the second elastic component in a normal state, when the knob is respectively in an opening state position and a closing state position, the limiting rod is respectively propped against the first limiting bulge and the second limiting bulge so as to overcome the reverse acting force of the first buffer component and the second buffer component on the knob.

In the above technical scheme, the second elastic component is a helical compression spring sleeved on the limiting rod, and the upper end and the lower end of the second elastic component respectively abut against the knob and the limiting rod.

In the technical scheme, the mounting seat is formed by connecting a base and a face cover, the first rotating block is arranged between the base and the face cover, the first buffering component and the second buffering component are arranged inside the face cover, and the knob is arranged on the outer portion of the face cover.

In the technical scheme, the bottom of the mounting seat and the position corresponding to the jack are in threaded connection with a locking sleeve, the locking sleeve is provided with a through hole for the universal driving shaft to pass through, and the lower port of the through hole is in a horn shape.

In the above technical scheme, the connecting structure is a square hole, and the cross section of one end of the linkage shaft, which is spliced with the square hole, is in a matched square shape.

In the technical scheme, the rotatable angle of the knob is larger than the included angle between the opening state position and the closing state position.

The invention has the positive effects that: by adopting the structure of the invention, when the knob is rotated during operation, the knob rotates to drive the first rotating block to rotate, when the knob rotates to a position close to the switching-off state or the switching-on state, the contact part on the first rotating block can be contacted with the first buffering part or the second buffering part and plays a buffering role through the compression of the buffering part, and the first rotating block is prevented from directly colliding with the mounting seat, so that the service life of the part is prolonged, and the durability of the manual operation device is enhanced.

Drawings

FIG. 1 is a schematic structural diagram of a manual operation device according to the present invention;

FIG. 2 is a schematic structural view of the hand-held device shown in FIG. 1 with parts omitted;

FIG. 3 is an exploded view of the hand-operated device of FIG. 1;

FIG. 4 is a schematic structural view of the manual operating device of the present invention with the knob removed;

FIG. 5 is a schematic view of the second rotating block of FIG. 4 shown removed;

FIG. 6 is a schematic view of the structure of the front cover of the present invention;

FIG. 7 is a schematic structural view of a first rotating block according to the present invention;

FIG. 8 is a schematic structural view of the locking sleeve of the present invention;

fig. 9 is a schematic structural view of the knob of the present invention.

The reference symbols shown in the figures are: 1-mounting a base; 11-a jack; 12-a first card slot; 13-a second card slot; 14-a first stop lug; 15-a second limiting bulge; 16-a base; 17-a face cover; 18-a locking sleeve; 181-a through hole; 19-keyhole; 2-a knob; 20-square hole; 21-mounting holes; 22-padlock hole; 3-a first rotating block; 31-a collision part; 4-a first cushioning component; 5-a second cushioning component; 6-a locking lever; 7-a first elastic member; 8-a second rotating block; 81-first perforation; 82-a second perforation; 9-a limiting rod; 10-a second elastic member.

Detailed Description

The specific structure of the manual operation device of the present invention is described below with reference to the drawings of the specification:

an external manual operation device for a circuit breaker, as shown in fig. 1 to 9, includes a mounting base 1 and a knob 2; the knob 2 is arranged on the upper part of the mounting seat 1 and is rotationally switched between a brake-off state position and a brake-on state position, a connecting structure connected with a linkage shaft is arranged at the inner end of the knob 2, an insertion hole 11 for the linkage shaft to pass through is formed in the mounting seat 1, and the manual operation device further comprises a locking structure used for locking the knob 2 at the brake-off state position; have in the mount pad 1 with knob 2 (accessible screw) is connected to keep synchronous pivoted first rotatory piece 3, conflict portion 31 has on the first rotatory piece 3, in the mount pad 1 be equipped with first buffer unit 4 and second buffer unit 5 on the rotatory route of conflict portion 31, knob 2 rotates extremely during separating brake state position conflict portion 31 on the first rotatory piece with first buffer unit 4 conflicts, knob 2 rotates extremely during closing state position conflict portion 31 on the first rotatory piece 3 with second buffer unit 5 conflicts. By adopting the structure, when the breaker is installed and used, when the knob 2 is in the opening state position, the breaker is in the opening state, and when the knob 2 is in the closing state position, the breaker is in the closing state; when the manual operating device is operated, the knob 2 is rotated, the knob 2 rotates to drive the first rotating block 3 to rotate, when the knob 2 rotates to a position close to the switching-off state or the switching-on state, the contact part 31 on the first rotating block 3 can be contacted with the first buffer part 4 or the second buffer part 5 and plays a buffer role through the compression of the buffer parts, and the first rotating block 3 is prevented from directly colliding with the mounting seat 1, so that the service life of the parts is prolonged, and the durability of the manual operating device is enhanced; the rotation 2 drives the handle part of the circuit breaker to rotate through the linkage shaft (or a linkage assembly comprising the linkage shaft) when rotating.

As an optimized design, in this embodiment, the rotatable angle of the knob 2 is greater than an included angle between the opening state position and the closing state position, and by adopting the above structural design, when the knob 2 is rotated by a hand to the opening state position or the closing state position during installation and use, the knob 2 is properly rotated in a transitional manner, so that the knob 2 is ensured to drive the handle part of the circuit breaker to be in place for opening and closing, and therefore the reliability of opening and closing of the circuit breaker is ensured, and after the hand leaves the knob 2, the knob 2 rebounds to the opening state position or the closing state position under the elastic force action of the first buffer part 4 and the second buffer part 5; usually, the angle between the opening state position and the closing state position is 90 degrees, and the rotatable angle of the knob is actually set to be larger than 90 degrees, such as 95 degrees.

In this embodiment, the first buffer member 4 and the second buffer member 5 are helical compression springs, and in practical operation, other elastic materials, such as a rubber block or a sponge block, may also be used for the first buffer member 4 and the second buffer member 5, and an elastic component (the elastic component includes at least one elastic material) may also be used.

As a further improvement of the present invention, a first card slot 12 and a second card slot 13 are arranged in the mounting base 1, a first end of the first buffer component 4 is clamped in the first card slot 12, and a first end of the second buffer component 5 is clamped in the second card slot 13; when the knob 2 rotates to the opening state position, the collision portion 31 of the first rotating block 3 collides with the second end of the first buffer component 4 to achieve buffering, and when the knob 2 rotates to the closing state position, the collision portion 31 of the first rotating block 3 collides with the second end of the second buffer component 5 to achieve buffering, which can be specifically referred to fig. 2 and 3.

Referring to fig. 3 to 5, in the present embodiment, the locking structure includes a locking bar 6 installed in an installation hole 21 of the knob 2, a first elastic member 7 providing an upward elastic force to the locking bar 6, and a locking hole 19 correspondingly provided on the mounting base 1, the locking bar 6 is normally located in the installation hole 21 by the first elastic member 7, a padlock hole 22 is provided on the knob 2 at a top of the installation hole 21, when the knob 2 is in the opening state position, the locking bar 6 is aligned with the locking hole 19, the locking bar 6 is moved downward to be inserted into the locking hole 19 by applying a downward pressure to the locking bar 6, the padlock is provided in the padlock hole 22 to restrict the locking bar 6 from moving upward, so as to lock the knob 2, when unlocking, the padlock is removed from the padlock hole, the locking bar 6 springs upward by the elastic force of the first elastic member 7, so that the lower end of the locking lever 6 is withdrawn from the locking hole 19 to unlock, and the knob 2 is rotated after the unlocking.

More specifically, the first elastic member 7 is a helical compression spring.

As a further improvement of the above embodiment, a second rotating block 8 which rotates synchronously with the knob 2 is rotatably disposed between the mounting base 1 and the knob 2, the knob 2 is provided with a limiting rod 9 which can move up and down and a second elastic member 10 which provides downward elastic force for the limiting rod 9, the second rotating block 8 is provided with a first through hole 81 through which the lower end of the limiting rod 9 passes and a second through hole 82 through which the lower end of the locking rod 6 passes, the first elastic member 7 is sleeved on the locking rod 6, the upper end and the lower end of the first elastic member respectively abut against the locking rod 6 and the second rotating block 8, the mounting base 1 is provided with a first limiting protrusion 14 and a second limiting protrusion 15 on the rotating path of the limiting rod 9, the lower end of the limiting rod 9 abuts against the mounting base 1 under the elastic force of the second elastic member 10 in a normal state, when the knob 2 is respectively positioned at the opening state position and the closing state position, the limit rod 9 respectively abuts against the first limit bulge 14 and the second limit bulge 15 to overcome the reverse acting force of the first buffer component 4 and the second buffer component 5 on the knob 2, when the hand-operated device is installed and used, in the process of rotating the knob 2 to the opening state position/the closing state position, the knob 2 rotates to drive the limit rod 9 to pass through the first limit bulge 14/the second limit bulge 15 (when the limit rod 9 passes through the first limit bulge 14/the second limit bulge 15, the limit rod 9 is subjected to an upward acting force and rises by a certain extent, and after the limit rod 9 passes through the first limit bulge 14/the second limit bulge 15, the limit rod 9 is reset downwards under the action of the second elastic component 10), after the knob 2 reaches the opening state position/closing state position, the knob 2 can receive the buffering action of the first buffering part 4/the second buffering part 5 to receive the reverse acting force, and the collision action of the limiting rod 9 and the first limiting protrusion 14/the second limiting protrusion 15 plays a limiting role in the knob 2, the knob 2 is prevented from rotating in the reverse direction, the temporary locking effect on the knob 2 is achieved, and the knob 2 is reliably locked through the locking structure.

In this embodiment, the first limiting protrusion 14 and the second limiting protrusion 14 are triangular, semicircular, or trapezoidal, which is beneficial for the limiting rod 9 to slide through.

In this embodiment, the second elastic component 10 is a helical compression spring sleeved on the limiting rod 9, and the upper end and the lower end of the second elastic component respectively abut against the knob 2 and the limiting rod 9, so as to provide a downward elastic force for the limiting rod 9.

In this embodiment, the mounting base 1 is formed by connecting a base 16 and a surface cover 17, the first rotating block 3 is disposed between the base 16 and the surface cover 17, the first buffer member 4 and the second buffer member 5 are mounted inside the surface cover 17, and the knob 2 is mounted on the outside of the surface cover 17.

In this embodiment, the bottom of mount pad 1 with the position spiro union that jack 11 corresponds has lock sleeve 18, lock sleeve 18 has the through-hole 181 that supplies the universal driving shaft to pass, the lower port of through-hole 181 is loudspeaker form, installs on the cabinet body through the lock sleeve 18 in the cabinet body and the external mounting base 1 bottom spiro union cooperation of cabinet body, and the lower port that sets up through-hole 181 is loudspeaker form, thereby has the guide effect and is favorable to the tip of universal driving shaft to insert in the through-hole 181.

In this embodiment, connection structure is square hole 20, on the universal driving shaft with the cross-sectional shape of the one end of square hole 20 grafting is the square that matches, during the installation use, inserts the square hole with the tip of universal driving shaft and realizes connecting to can bear great circumference power and rotate in order to effectively drive the universal driving shaft when knob 2 rotates.

It should be noted that, in the present invention, the knob 2 is not locked at the closing state position, so as to drive the knob 2 to rotate to the opening state position when the circuit breaker trips in an abnormal condition such as overload or short circuit, and the knob 2 is locked at the opening state position, so as to ensure that the controlled line is absolutely disconnected when the operator performs line maintenance, thereby ensuring the safety of the maintenance personnel.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.

Claims

1. An external manual operation device for a circuit breaker comprises a mounting seat (1) and a knob (2);

the rotary knob (2) is installed on the upper portion of the installation base (1) and is rotationally switched between a brake-off state position and a brake-on state position, a connecting structure connected with a linkage shaft is arranged at the inner end of the rotary knob (2), an insertion hole (11) for the linkage shaft to penetrate through is formed in the installation base (1), and the rotary knob locking device further comprises a locking structure used for locking the rotary knob (2) at the brake-off state position;

the utility model is characterized in that, have in mount pad (1) with knob (2) are connected to keep synchronous pivoted first rotatory piece (3), conflict portion (31) have on first rotatory piece (3), mount pad (1) is inherent be equipped with first buffer unit (4) and second buffer unit (5) on the rotatory route of conflict portion (31), knob (2) rotate extremely when separating brake state position conflict portion (31) on first rotatory piece (3) with first buffer unit (4) are contradicted, knob (2) rotate extremely when closing state position conflict portion (31) on first rotatory piece (3) with second buffer unit (5) are contradicted.

2. External hand operation device for circuit breaker according to claim 1, characterised in that the first (4) and second (5) damping parts are helical compression springs.

3. The external hand operation device for the circuit breaker according to claim 2, wherein the mounting seat (1) is internally provided with a first clamping groove (12) and a second clamping groove (13), a first end of the first buffer component (4) is clamped in the first clamping groove (12), and a first end of the second buffer component (5) is clamped in the second clamping groove (13);

knob (2) rotate extremely when separating brake state position conflict portion (31) on first rotatory piece (3) with the second end of first buffer part (4) is contradicted, knob (2) rotate extremely when closing brake state position conflict portion (31) on first rotatory piece (3) with the second end of second buffer part (5) is contradicted.

4. The external hand-operated apparatus for the circuit breaker according to claim 1, wherein the locking structure comprises a locking rod (6) installed in a mounting hole (21) on the knob (2), a first elastic member (7) providing an upward elastic force to the locking rod (6), and a locking hole (19) correspondingly provided on the mounting seat (1), the locking rod (6) is located in the mounting hole (21) under the action of the first elastic member (7) in a normal state, a padlock hole (22) is provided on the knob (2) at the top of the mounting hole (21), when the knob (2) is in the open-state position, the locking rod (6) is aligned with the locking hole (19), the locking rod (6) is inserted into the locking hole by applying a downward pressure to the locking rod (6), and a padlock is provided in the padlock hole (22) to restrict the locking rod (6) from moving upward, the knob (2) is locked.

5. External hand arrangement for a circuit breaker according to claim 4, characterised in that the first resilient part (7) is a helical compression spring.

6. The external manual operation device for the circuit breaker according to claim 4 or 5, wherein a second rotation block (8) which rotates synchronously with the knob (2) is rotatably arranged between the mounting base (1) and the knob (2), a limiting rod (9) which can move up and down and a second elastic component (10) which provides downward elastic force for the limiting rod (9) are arranged on the knob (2), the second rotation block (8) is provided with a first through hole (81) for the lower end of the limiting rod (9) to pass through and a second through hole (82) for the lower end of the locking rod (6) to pass through, the first elastic component (7) is sleeved on the locking rod (6), the upper end and the lower end of the first elastic component are respectively abutted against the locking rod (6) and the second rotation block (8), a first limiting bulge (14) and a second limiting bulge (15) are arranged on the rotation path of the limiting rod (9) on the mounting base (1), the lower end of the limiting rod (9) is abutted against the mounting seat (1) under the action of the elastic force of the second elastic component (10) in a normal state, and when the knob (2) is in an opening state position and a closing state position respectively, the limiting rod (9) is abutted against the first limiting bulge (14) and the second limiting bulge (15) respectively so as to overcome the reverse acting force of the first buffer component (4) and the second buffer component (5) on the knob (2).

7. The external manual operation device for the circuit breaker according to claim 6, wherein the second elastic component (10) is a helical compression spring sleeved on the limit rod (9), and the upper end and the lower end of the second elastic component respectively abut against the knob (2) and the limit rod (9).

8. The external manual operation device for the circuit breaker according to claim 1, wherein the mounting base (1) is formed by connecting a base (16) and a face cover (17), the first rotating block (3) is arranged between the base (16) and the face cover (17), the first buffer component (4) and the second buffer component (5) are installed inside the face cover (17), and the knob (2) is installed on the outside of the face cover (17).

9. The external manual operation device for the circuit breaker according to claim 1, wherein a locking sleeve (18) is screwed at a position, corresponding to the insertion hole (11), of the bottom of the mounting seat (1), the locking sleeve (18) is provided with a through hole (181) for a linkage shaft to pass through, and a lower port of the through hole (181) is in a horn shape.

10. External hand-operated device for circuit breakers according to claim 1, characterised in that the rotation angle of the knob (2) is greater than the angle between the open and closed position.