CN217485378U - Indicating device and load break switch - Google Patents

Abstract

An indicating device and a load break switch, the load break switch comprises the indicating device, the indicating device comprises a device shell, an indicating piece and an elastic piece, the indicating piece is rotatably arranged on the device shell, an indicating structure and a power structure are respectively arranged on the indicating piece, an indicating window corresponding to the indicating structure is arranged on the device shell, an indicating mark is arranged on the indicating structure, an operating mechanism of the load break switch pushes the power structure when switching on or switching off, the indicating mark of the indicating piece is superposed with the indicating window, the elastic piece is connected with the indicating piece and is used for driving the indicating piece to reset, the indicating device is used as an independent module and can be additionally arranged above the operating mechanism of the load break switch and is used for being matched with the operating mechanism, the operating mechanism pushes the indicating piece to display the indicating mark when switching on or switching off and is used for displaying the switching on or switching off state, and can directly observe the working state of the load break switch, and the existing load break switch and the operating mechanism thereof do not need to be modified.

Description

Indicating device and load break switch

Technical Field

The invention relates to the field of low-voltage electric appliances, in particular to an indicating device and a load break switch.

Background

The load break switch is an important switching device of a power distribution system, is commonly used in a power distribution circuit and a motor circuit with high voltage and large current short-circuit current, is used as a power switch, an isolating switch or an emergency switch which are manually operated infrequently, and is used for circuit short-circuit protection. A user drives an operating mechanism through a handle to drive a moving contact to be matched with a static contact so as to switch on and off a circuit, and the fuse set provides current protection.

However, the conventional load break switch generally does not have an indicating device, or has many problems with the indicating device. The problems of low space utilization rate and large occupied space, which lead to the increase of the whole volume of the load break switch, poor reliability, easy failure and the like exist.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an indicating device with a structure capable of indicating the working state of a load break switch.

In order to achieve the purpose, the invention adopts the following technical scheme:

an indicating device comprises a device shell, an indicating piece and an elastic piece, wherein the indicating piece is rotatably installed on the device shell, an indicating structure and a power structure are respectively arranged on the indicating piece, an indicating window corresponding to the indicating structure is arranged on the device shell, an indicating mark is arranged on the indicating structure, an operating mechanism of a load break switch pushes the power structure when the load break switch is switched on or switched off, the indicating mark of the indicating piece is enabled to coincide with the indicating window, and the elastic piece is connected with the indicating piece and used for driving the indicating piece to reset.

Preferably, the indicating part comprises two groups of indicating units, each of the two groups of indicating units comprises a group of power structure and indicating structure, the device shell is provided with a mounting structure inserted between the two groups of indicating units, and the power structure and the mounting structure of at least one group of indicating units are rotatably connected.

Preferably, the indicating member includes a positioning plate connected to at least one group of indicating units, and the elastic member is capable of driving the positioning plate to abut against the mounting structure so that one of the indicating marks coincides with the indicating window.

Preferably, the indicating piece comprises a connecting plate, the power structures of the two groups of indicating units are connected between the ends far away from the mounting plate mounting structure through the connecting plate, and the indicating structures of the two groups of indicating units are respectively arranged on the side faces, far away from the other indicating unit, of the respective power structures.

Preferably, the elastic component is located the outside of two sets of indicating units, the other end that elastic component and indicating component are connected insert between two sets of indicating units with mounting structure connects, the last groove of stepping down that is used for dodging of elastic component that is equipped with of power structure.

Preferably, the mounting structure comprises two opposite mounting plates, the two mounting plates are respectively located between the power structures of the two groups of indicating units, and the lever is located between the two mounting plates.

Preferably, the power structure and the mounting structure are respectively matched with a connecting shaft, and the connecting shaft respectively penetrates through the mounting structure and the indicating piece and rotatably connects the indicating piece to the mounting structure.

Preferably, the indicating structure is in the shape of an arc surface protruding towards the side away from the dynamic structure, and the indicating mark is arranged on the side of the indicating structure away from the dynamic structure.

The invention also provides a load break switch, which comprises a switch shell, an operating mechanism and at least one phase circuit, wherein the operating mechanism and the at least one phase circuit are arranged in the switch shell, the phase circuit comprises a contact system and a fuse, the indicating device also comprises any one of the indicating devices, the operating mechanism comprises a handle, a mechanism push rod and a mechanism spring connected between the handle and the mechanism push rod, the mechanism push rod is connected with the contact system, and an action shaft used for pushing the power structure is arranged on the handle.

Preferably, the device shell is installed on the switch shell, the device shell is provided with an inserting structure, the switch shell is provided with an inserting groove structure and a sliding groove respectively, and the inserting structure can be driven to be inserted into the inserting structure to be in limit fit when the device shell slides along the sliding groove.

The indicating device provided by the invention is an independent module, can be additionally arranged above an operating mechanism of the load break switch and is used for being matched with the operating mechanism, the operating mechanism pushes the indicating piece to display the indicating mark when switching on or switching off, the indicating mark is used for displaying the switching on or switching off state, the working state of the load break switch can be directly observed, and the existing load break switch and the operating mechanism thereof do not need to be modified.

Drawings

FIG. 1 is a schematic view of a load break switch;

FIG. 2 is a schematic view of the assembly of the device housing with the switch housing;

FIG. 3 is a schematic view of the structure of the locking device and the indicating device;

FIG. 4 is an exploded view of the locking device and the indicating device;

FIG. 5 is a partial cross-sectional view of FIG. 3;

FIG. 6 is a schematic view of the assembly of the indicator with the device housing;

FIG. 7 is the handle, locking member and indicator in the tripped position;

FIG. 8 is the handle and indicator in the closed position;

FIG. 9 is a schematic view of the locking device engaged with the handle;

FIG. 10 is an enlarged partial view of FIG. 9;

figure 11 is a schematic view of the engagement of the restricting member with the external lock body.

Detailed Description

The following description will further describe the specific embodiments of the indicating device of the present invention with reference to the embodiments shown in fig. 1 to 11. The indicating means created by the present invention is not limited to the description of the following embodiments.

As shown in fig. 1, the load break switch of this embodiment includes a switch housing 6, and an operating mechanism 7 and at least one phase circuit disposed in the switch housing 6, where the phase circuit includes a contact system and a fuse 9 connected in series, the contact system includes a movable contact component 81 and a fixed contact 80 used in cooperation, the movable contact component 81 of the at least one phase circuit is connected to a contact push rod 60, the operating mechanism 7 includes a handle 71, and generally includes a mechanism push rod, a mechanism link and a mechanism spring, the mechanism link is used to lock the operating mechanism 7, the mechanism push rod is connected to the contact push rod 60, the mechanism spring is connected between the handle 71 and the mechanism push rod, the mechanism push rod is driven by the mechanism spring to move when the handle 71 rotates, the mechanism push rod drives the movable contact component 81 of the at least one phase circuit to contact and separate from the corresponding fixed contact 80 through the contact push rod 60, the circuit is closed and disconnected, and the fuse 9 is fused when the circuit is overloaded or short-circuited, so that the circuit is protected.

One development of the invention is that the load break switch is provided with a locking device.

As shown in fig. 3, the locking device of the present invention comprises:

the operating mechanism 7 is provided with a handle 71, and a first blocking part is arranged on the handle 71;

the lever 2 is rotationally connected with the device shell 1, and the lever 2 is provided with a second blocking part 22 and a first coupling part;

the locking plate 3 is provided with a second coupling part and a locking part 32, and the locking part 32 is used for arranging a locking piece 350;

when the operating mechanism 7 is in the switching-off position, the locking plate 3 moves to be matched with the first coupling part of the lever 2 through the second coupling part, so that the lever 2 is driven to rotate, the second blocking part 22 of the lever 2 is abutted to the first blocking part of the handle 71, and the switching-on of the operating mechanism 7 is blocked.

The locking device provided by the invention can be additionally arranged above an operating mechanism 7 of a load break switch, the lever 2 is driven to rotate by the locking plate 3, so that the lever 2 blocks the operating mechanism to be switched on, the locking plate 3 is limited to move by the locking part 32, so that the locking plate 3 blocks the lever 2 to rotate, the lever 2 cannot rotate the abdicating operating mechanism 7 unless the locking part 350 on the locking part 32 is removed, the operating mechanism 7 cannot drive the load break switch to be switched on, an operator can be reliably protected, and accidents caused by accidental switching-on can be avoided.

Preferably, the locking portion 32 of the locking plate 3 is movable between the inside and the outside of the device case 1, and when the operating mechanism 7 is in the open position, the locking portion 32 is moved to the outside of the device case 1 to provide the locking member 350, and at the same time, the locking plate 3 drives the lever 2 to rotate, so that the second blocking portion 22 of the lever 2 abuts against the first blocking portion of the handle 71, and the closing of the operating mechanism 7 is prevented. An avoiding structure is arranged on the handle 71, and when the operating mechanism 7 is in the switching-on position, the handle 71 avoids the second blocking part 22 of the lever 2 through the avoiding structure.

When the locking device does not block the closing of the operating mechanism, the locking plate 3 and the locking part 32 thereof are integrally positioned in the device shell 1, the locking part 32 is moved to the outer side of the device shell 1, the locking piece 350 is arranged to prevent the locking plate 3 from moving, so that the action of arranging the locking piece 350 is synchronous with the action of driving the locking plate 3 to move the blocking handle 71, the operation is convenient, and action steps are saved; and when the operating mechanism 7 is not blocked to be switched on, the locking plate 3 is positioned in the device shell 1, so that the whole locking device is more compact, and the locking piece 350 can be limited with the device shell 1. Of course, as another embodiment, the locking part 32 may be located outside the device housing 1 all the time, and when the locking plate 3 moves, the locking part 32 moves to a locking position outside the device housing 1, and the locking piece 350 locks the locking part 32 with the locking position of the device housing 1.

Another improvement of the invention is that the load break switch is provided with an indicating device.

As shown in fig. 3, the indicating device of the present invention includes a device housing 1, an indicating member 4 and an elastic member 5, wherein the indicating member 4 is rotatably mounted on the device housing 1, the indicating member 4 is respectively provided with an indicating structure 41 and a power structure 42, the device housing 1 is provided with an indicating window 43 corresponding to the indicating structure 41, the indicating structure 41 is provided with at least two indicating marks 44, an operating mechanism 7 of the load break switch pushes the power structure 42 when switching on or switching off, so that the indicating mark 44 of the indicating member 4 coincides with the indicating window 43, and the elastic member 5 is connected with the indicating member 4 for driving the indicating member 4 to reset.

The indicating device provided by the invention is an independent module, can be additionally arranged above an operating mechanism 7 of the load break switch and is used for being matched with the operating mechanism 7, the operating mechanism 7 pushes the indicating piece 4 to display the indicating mark 44 when switching on or switching off, the indicating mark is used for displaying the switching on or switching off state, the working state of the load break switch can be directly observed, and the existing load break switch and the operating mechanism 7 thereof do not need to be modified.

Further, as shown in fig. 2, the device housing 1 of the present embodiment is mounted on the switch housing 6 above the operating mechanism 7, the handle 71 is provided with an actuating shaft 7A, and the handle 71 can be respectively matched with the second blocking portion 22 of the lever 2 and the power structure 42 of the indicator 4 by one part of the actuating shaft 7A, so as to skillfully combine the locking function and the indicating function.

Specifically, fig. 7 and 8 respectively show an opening state and a closing state of the operating mechanism 7, the closing process is a process of changing the operating mechanism 7 from fig. 7 to fig. 8, and the actuating shaft 7A rotates from the position in fig. 7 to the left side in the closing process;

the lever 2 only needs to lock the load break switch, the locking plate 3 is actively operated to drive the second blocking part 22 to rotate clockwise to the closing diameter of the action shaft 7A, the action shaft 7A is blocked to rotate towards the left side from the position shown in the figure 7, if the load break switch does not need to be locked, the second blocking part 22 cannot rotate to the action shaft 7A on the closing path, and the action shaft 7A can rotate towards the left side for closing;

the indicating piece 4 is supported against the device shell 1 anticlockwise under the driving of the elastic piece 5, the power structure 42 of the indicating piece 4 is always located on a closing path of the action shaft 7A, the indicating window 43 displays an indicating mark 44 corresponding to opening, and when the operating mechanism 7 is closed, the power structure 42 is rotated to the left side through the action shaft 7A and pushed, and the indicating mark 44 corresponding to closing is displayed.

It will be understood that the handle 71 can be provided with means for engaging the lever 2 and the indicator 4, respectively, in two different positions, or by engaging the lever 2 and the indicator 4, respectively, through two different parts of the operating mechanism 7, but that the whole device becomes very complex. Of course, the operating mechanism 7 is not limited to the above-mentioned embodiment, and when the operating mechanism 7 is implemented by using the prior art, the second blocking portion 22 can still block the closing of the operating mechanism 7, which falls within the protection scope of the present invention.

As shown in fig. 3-4, the device housing 1 is provided with a mounting structure 11 engaged with a connecting shaft 12, the connecting shaft 12 passes through the mounting structure 11, the lever 2 and the indicator 4 respectively and connects the mounting structure 11, the lever 2 and the indicator 4 together, and the device housing 1, the mounting structure 11 and the lever 2 can be mounted together only by one part of the connecting shaft 12.

Preferably, a shaft shoulder 121 is arranged at one end of the connecting shaft 12, a shaft groove 123 for mounting the retaining ring 122 is arranged at one end of the connecting shaft 12 away from the shaft shoulder 121, and after the end of the connecting shaft 12 with the shaft groove 123 penetrates through the device housing 1, the mounting structure 11 and the lever 2, the retaining ring 122 is mounted on the shaft groove 123, so that the device housing 1, the mounting structure 11 and the lever 2 are limited between the retaining ring 122 and the shaft shoulder 121.

It will be understood that the mounting structure 11 and the lever 2 may be mounted to the device housing 1 separately, and the device housing 1, the mounting structure 11 and the lever 2 may be connected by other means, all falling within the scope of the present invention.

As shown in fig. 3 to 4, the rotation plane of the lever 2 is parallel to the rotation plane of the handle 71. Specifically, the lever 2 of the present embodiment includes a pivot plate 24 (fig. 5) rotatably connected to the device housing 1, and a coupling plate 25 and a second blocking portion 22 oppositely disposed at two sides of the pivot plate 24, where the first coupling portion is a coupling shaft 31 disposed at one side of the lock plate 3, the second coupling portion is disposed on the coupling plate 25, the second coupling portion is a coupling groove 21 sleeved on the coupling shaft 31, and when the lock plate 3 moves, the side wall of the coupling groove 21 is pushed by the coupling shaft 31 to drive the lever 2 to rotate; first barrier portion is for setting up dodge action axle 7A in the structure, the one end and the 2 rotation centers of lever of second barrier portion 22 are connected, the one end that 2 rotation centers of lever were kept away from to second barrier portion 22 is used for blockking action axle 7A, through coupling shaft 31 promotion coupling groove 21's lateral wall when locking plate 3 removed, makes coupling plate 25 drive lever 2 and rotates, and coupling shaft 31 can follow the cell wall removal of coupling groove 21 simultaneously. It is understood that the coupling slot 21 may be a closed structure with a waist-round shape, the coupling shaft 31 of the locking plate 3 may have other structures, such that it can be inserted into the coupling slot 21 from the side, or the coupling slot 21 may have other polygonal shapes, such that the coupling shaft 31 can move along the coupling slot 21.

As shown in fig. 9-10, a locking plate 23 is provided on one side of the coupling plate 25 to cooperate with the operating mechanism 7, and the locking plate 23 is preferably formed by bending one side edge of the coupling plate 25 close to the coupling slot 21, and the locking plate 23 is blocked by the operating mechanism 7 when closing the switch, so that the lever 2 cannot rotate. Preferably, a handle 71 of the operating mechanism 7 is provided with a locking shaft 7B, the operating mechanism 7 is in limit fit with the locking plate 23 during closing, and the locking shaft 7B pushes the locking plate 23 during closing, so that the locking plate 23 drives the locking plate 3 to retract into the device housing 1, and the locking plate 3 is prevented from extending out of the device housing 1. The locking part 32 of the locking plate 3 can move to extend out of the device shell 1 or retract into the device shell 1, when the locking part 32 extends out of the device shell 1, the locking plate 3 drives the second blocking part 22 of the lever 2 to rotate to a position for blocking the closing of the operating mechanism 7, when the locking part 32 retracts into the device shell 1, the second blocking part 22 of the lever 2 driven by the locking plate 3 releases the limit of the closing operation of the operating mechanism 7, namely, the operating mechanism 7 can perform the closing operation to drive the closing of the load break switch. After the operating mechanism 7 drives the load break switch to close, the locking plate 23 is blocked by the operating mechanism 7, and the locking plate 23 of the lever 2 blocks the locking plate 3 so that the locking part 32 cannot extend out of the device housing 1, i.e., the operating mechanism 7 cannot be locked by the locking device. The operating mechanism 7 releases the blocking of the locking plate 23 when opening, and the locking part 32 of the locking plate 3 can move out of the device housing 1.

As shown in fig. 3-6, the indicator 4 includes two sets of indicating units, each of the two sets of indicating units includes a set of the power structure 42 and an indicating structure 41, the device housing 1 is provided with a mounting structure 11 inserted between the two sets of indicating units, the power structure 42 of at least one set of indicating unit is rotatably connected with the mounting structure 11, the lever 2 can pass through the two sets of indicating units, the lever 2 is rotatably mounted on the mounting structure 11, and the first coupling portion and the second blocking portion 22 of the lever 2 are oppositely disposed on two sides of the indicator 4.

The indicating structures 41 of the two indicating units are respectively provided with one indicating mark 44, so that the two indicating marks 44 can respectively indicate the working states of different devices, and the indicating piece 4 can improve the structural strength and balance of the indicating piece 4 through the design of the double-layer structure, and can prevent the problems of damage, deflection and the like caused by the impact of the action shaft 7A. In addition, because the lever 2 occupies a large space in the transverse direction and the indicator 4 occupies a large space in the longitudinal direction, the lever 2 can penetrate through the indicator 4 in a staggered design, the utilization rate of the space can be improved, and the increase of the volume of the whole switch is avoided.

Further, the indicating member 4 comprises a connecting plate 45, the power structures 42 of the two groups of indicating units are connected through the connecting plate 45 between the ends far away from the mounting structure 11 of the mounting plate 111, the indicating structures 41 of the two groups of indicating units are respectively arranged on the side surfaces of the respective power structures 42 far away from the other indicating unit, an insertion space is formed between the indicating structures 41 of the two groups of indicating units, and the lever 2 and the mounting structure 11 can be respectively inserted between the two groups of indicating units from the insertion space.

Further, the elastic component 5 is a torsion spring, the torsion spring includes a spiral structure sleeved on the connecting shaft 12, and a first spring arm 51 and a second spring arm 52 connected with the spiral structure respectively, the first spring arm 51 is connected with the power structure 42 of the indicator 4, and the second spring arm 52 is connected with the mounting structure 11 on the device housing 1.

Preferably, the spiral structure of the elastic member 5 is located outside the two groups of indication units, an avoiding groove 53 for avoiding the second spring arm 52 is provided on one of the power structures 42, and the second spring arm 52 is inserted from the avoiding groove 53 to the inside of the two groups of indication units and connected with the mounting structure 11. The rotation member retreats from the elastic member 5 through the receding groove 53, and the elastic member 5 is not pushed even if the rotation member rotates by a certain angle.

Further, as shown in fig. 3, the mounting structure 11 on the device housing 1 includes a mounting base 110 and two mounting plates 111 oppositely disposed on the mounting base 110, the two mounting plates 111 are respectively located between the power structures 42 of the two groups of indication units, the lever 2 is located between the two mounting plates 111, the connecting shaft 12 passes through and rotatably connects the two groups of power structures 42, the two mounting plates 111 and the lever 2 together, and the elastic member 5 is provided with a hook hanging on one side of the mounting plate 111.

Further, one side of the power structure 42 of the two indicating units is connected through a positioning plate 46, and the elastic member 5 drives the positioning plate 46 to abut against the mounting plate 111 for positioning engagement when the operating mechanism 7 is opened, so that the indicating member 4 is kept still and the indicating mark 44 corresponding to the opening is displayed in the indicating window 43.

Furthermore, the indicating structure 41 is in an arc shape protruding towards the side away from the power structure 42, the indicating mark 44 is arranged on the side of the indicating structure 41 away from the power structure 42, and in the rotating process of the indicating piece 4, the distance from the side of the indicating structure 41 away from the indicating structure 41 to the indicating window 43 is unchanged, so that the dustproof effect can be achieved.

Further, the coupling plate 25 and the second blocking portion 22 of the lever 2 are oppositely disposed at two sides of the indicator 4, and the second blocking portion 22 is provided with a first avoiding groove 47 for avoiding the positioning plate 46.

As shown in fig. 2, the handle 71 includes a rocker arm 711 and two connecting levers 712 connected to the rocker arm 711, wherein one ends of the two connecting levers 712 remote from the rocker arm 711 are connected to the operating lever 713, a through hole 710 constituting the escape structure is defined between the two connecting levers 712 and the operating lever 713, the rocker arm 711 is disposed in the switch housing 6 below the device housing 1, the operating lever 713 is disposed above the device housing 1, one ends of the two connecting levers 712 are inserted into the switch housing 6 and connected to the rocker arm 711, one ends of the two connecting levers 712 remote from the rocker arm 711 extend above the device housing 1 and are connected to the operating lever 713, and the actuating shaft 7A engaged with the locking device is disposed inside one of the connecting levers 712. It can be understood that the lever 2 may be located on the outer side of the handle 71, and thus, the through hole 710 on the handle 71 does not need to be passed through, and the handle 71 is not provided with a protrusion structure above the action shaft 7A, so that the space above the action shaft 7A may constitute an avoidance structure for avoiding the lever 2.

Further, be equipped with the grafting structure on the device casing 1, be equipped with slot structure and spout 63 on the switch casing 6 respectively, when device casing 1 slided along spout 63, can drive the grafting structure and insert the spacing cooperation in the grafting structure. The locking and/or indicating device is fitted as a separate module to the switch housing 6 of the load break switch.

Specifically, as shown in fig. 6, the device housing 1 includes two side plates 15 disposed oppositely and a top plate 13 connected between the two side plates 15, the two side plates 15 are connected to one end of the top plate 13 through a baffle plate 14, the lever 2 and the indicator 4 are respectively mounted on the inner side of the top plate 13, the lock plate 3 is slidably mounted on the baffle plate 14, that is, the lock plate 3 is slidably mounted along the side wall of the device housing 1, the top plate 13 is provided with an indication window 43, one end of the top plate 13 away from the baffle plate 14 is provided with an insertion structure, the switch housing 6 is provided with a top plate 64 disposed opposite to the baffle plate 14, the top plate 64 is provided with a slot structure corresponding to the insertion structure, the switch housing 6 includes two half housings 61 disposed oppositely, the two half housings 61 are provided with guide plates 62, the outer sides of the guide plates 62 are provided with sliding grooves 63 respectively, the device shell 1 can be sleeved on the guide plate 62 and inserted into the switch shell 6 along the sliding groove 63, the guide plate 62 is provided with a first mounting hole 651 matched with the mounting screw 65, the side plate 15 is provided with a second mounting hole 652 matched with the mounting screw 65, the mounting screw 65 respectively penetrates through the first mounting hole 651 and the second mounting hole 652 to fix the device shell 1 and the switch shell 6, the inserting structure of the embodiment comprises a first inserting plate 131 and two second inserting plates 132, the inserting structure comprises a first inserting groove 641 corresponding to the first inserting plate 131 and second inserting grooves 642 corresponding to the two second inserting plates 132, and the first inserting plate 131 penetrates through the inner sides of the two connecting handles 712 of the handle 71 and then is inserted into the first inserting groove 641 during assembly.

As shown in fig. 9-11, the locking plate 3 is slidably mounted on the baffle 14 and connected to the limiting spring 33, the limiting spring 33 drives the locking plate 3 to move into the device housing 1 and abut against the device housing 1 for limiting, although the lever 2 is locked by the locking shaft 7B on the handle 71 when the switch is closed, and further the locking plate 3 is locked in the device housing 1, the lever 2 and the locking plate 3 can freely move when the switch is opened, the limiting spring 33 can limit the locking plate 3 in the limiting device housing 1, the locking plate 3 is pulled out when the lock is needed, and the locking plate 3 is locked by the locking piece 350, so that the lever 2 locks the operating mechanism 7, and the load break switch cannot be closed.

Specifically, the baffle 14 includes interior baffle 141 and sets up two outer baffles 142 in interior baffle 141 one side respectively, forms between two outer baffles 142 and is used for holding the restriction groove of jam plate 3 forms guide way 143 between two outer baffles 142 and interior baffle 141 respectively, is equipped with respectively in the both sides of jam plate 3 and inserts sliding fit's in guide way 143 guide bar 34, the top of jam plate 3 is equipped with padlock hole and operation muscle 36, stirs operation muscle 36 and can drives jam plate 3 rebound, the padlock hole constitutes locking portion 32, padlock hole is used for connecting latch 350, exposes the back from device casing 1 in the padlock hole, and latch 350 can pass padlock hole and lock on jam plate 3, blocks that jam plate 3 withdraws device casing 1, guarantees reliable locking. It is understood that the locking portion 32 may also limit the movement of the locking plate 3 in other manners, such as a snap structure, and a corresponding slot is provided at a predetermined position of the device housing 1, and the locking plate 3 is locked to retract by the snap structure, which falls within the protection scope of the present invention.

As shown in fig. 9 to 11, the top of the locking plate 3 is located in the limiting groove, the bottom of the locking plate 3 extends into the switch housing 6, the two half shells 61 of the switch housing 6 are respectively provided with a second limiting groove 66 matched with the bottom of the locking plate 3, and by matching the switch housing 6, the length of the locking plate 3 can be effectively increased, and the reliability of the locking plate 3 is ensured. Of course, the length of the locking plate 3 and the blocking plate 14 can also be adjusted so that the locking plate 3 does not project into the switch housing 6.

As shown in fig. 4, two transmission plates 35 are oppositely disposed on the inner side of the locking plate 3 of the present embodiment, the coupling shaft 31 is connected between the two transmission plates 35, the coupling groove 21 is U-shaped, and the coupling groove 21 can be inserted between the two transmission plates 35 and is sleeved on the coupling shaft 31;

the outer sides of the two transmission plates 35 of the locking plate 3 are respectively provided with a spring plate 6, a spring groove 37 corresponding to the spring plate 6 is arranged in the device shell 1, a limiting spring 33 is respectively arranged between the spring plate 6 and the spring groove 37 corresponding to each group, and two ends of the limiting spring 33 are respectively limited with the corresponding spring plate 6 and the spring groove 37.

As shown in fig. 6-7, a space for avoiding the inner baffle 141 is formed between the limiting spring 33 and the lock plate 3 at an interval, the inner baffle 141 can be inserted between the limiting spring 33 and the lock plate 3 and is in limiting fit with the spring plate 6 on the lock plate 3 for connecting the limiting spring 33, the inner baffle 141 blocks the lock plate 3 from leaving the device housing 1 through limiting the spring plate 6, so as to prevent the lock plate 3 from falling off, a second guide groove 144 is formed in the middle of the inner baffle 141, and the coupling shaft 31 and the two transmission plates 35 are located in sliding fit with the inner side of the second guide groove 144.

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.

Claims (10)

1. An indicating device, characterized by: including device casing (1), indicator (4) and elastic component (5), indicator (4) rotate to be installed on device casing (1), are equipped with indication structure (41) and power structure (42) on indicator (4) respectively, be equipped with on device casing (1) and indicate window (43) that structure (41) correspond with the instruction, be equipped with on indication structure (41) indicator (44), operating device (7) of load circuit breaker promote power structure (42) when closing a floodgate or separating brake, make indicator (44) and indicator window (43) coincidence of indicator (4), and elastic component (5) are connected with indicator (4) for drive indicator (4) reset.

2. The indicating device of claim 1, wherein: the indicating piece (4) comprises two groups of indicating units, the two groups of indicating units respectively comprise a group of power structures (42) and indicating structures (41), the device shell (1) is provided with a mounting structure (11) inserted between the two groups of indicating units, and the power structures (42) of at least one group of indicating units are rotatably connected with the mounting structure (11).

3. The indicating device of claim 2 wherein: the indicator (4) comprises a positioning plate (46) connected to at least one set of indicator units, and the elastic member (5) is capable of driving the positioning plate (46) against the mounting structure (11) so that one of the indicator marks (44) coincides with the indicator window (43).

4. The indicating device of claim 2 wherein: the indicating piece (4) comprises a connecting plate (45), the power structures (42) of the two groups of indicating units are connected through the connecting plate (45) at one ends far away from the mounting structure (11), and the indicating structures (41) of the two groups of indicating units are respectively arranged on the side faces, far away from the other indicating unit, of the power structures (42).

5. The indicating device of claim 2 wherein: elastic component (5) are located two sets of indicating unit's the outside, the other end that elastic component (5) and indicating component (4) are connected insert between two sets of indicating unit with mounting structure (11) are connected, be equipped with on power structure (42) with dodging groove (53) of stepping down of elastic component (5).

6. The indicating device of claim 2, wherein: the mounting structure (11) comprises two mounting plates (111) which are oppositely arranged, the two mounting plates (111) are respectively located between the power structures (42) of the two groups of indicating units, and the lever (2) is located between the two mounting plates (111).

7. The indicating device of claim 2, wherein: the power structure (42) and the mounting structure (11) are respectively matched with the connecting shaft (12), and the connecting shaft (12) respectively penetrates through the mounting structure (11) and the indicating piece (4) and rotatably connects the indicating piece (4) to the mounting structure (11).

8. The indicating device of claim 1 wherein: the indicating structure (41) is in an arc surface shape protruding towards the side far away from the power structure (42), and the indicating mark (44) is arranged on the side, far away from the power structure (42), of the indicating structure (41).

9. A load break switch comprising a switch housing (6) and an operating mechanism (7) and at least one phase circuit arranged in the switch housing (6), said phase circuit comprising a contact system and a fuse (9), characterized in that: further comprising an indicating device according to any one of claims 1 to 8, wherein the operating mechanism (7) comprises a handle (71) and a mechanism push rod, and a mechanism spring connected between the handle (71) and the mechanism push rod, the mechanism push rod is connected with the contact system, and an action shaft (7A) for pushing the power structure (42) is arranged on the handle (71).

10. The load break switch of claim 9, wherein: the device casing (1) is installed on the switch casing (6), be equipped with the grafting structure on the device casing (1), be equipped with slot structure and spout (63) on the switch casing (6) respectively, when device casing (1) slides along spout (63), can drive the grafting structure and insert spacing cooperation in the grafting structure.

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