CN215680588U - Locking and unlocking mechanism of isolating switch - Google Patents

Abstract

A locking and unlocking mechanism of a disconnecting switch is characterized in that: the lock catch (7) is installed on the operating mechanism and located in the cavity III (c), and the tripping functional part is directly arranged in the rotary isolating switch, so that the size of a switch product is reduced, the product cost is reduced, and the use reliability and safety of the isolating switch are improved.

Description

Locking and unlocking mechanism of isolating switch

Technical Field

The utility model belongs to the technical field of switches, and particularly relates to a locking and unlocking mechanism of an isolating switch.

Background

The words switch are to be interpreted as open and closed. It refers to an element that can open a circuit, interrupt a current, or cause it to flow to other circuits. The most common switches are electromechanical devices that are operated by a person, in which there are one or several contacts. The "closed" of a contact indicates that the contact is conductive, allowing current to flow; an "open" of the switch indicates that the contact is not conductive, creating an open circuit, and not allowing current to flow. The development history of the switch is from the original knife switch needing manual operation to the intelligent switch applied to various large electrical control equipment, the functions of the switch are more and more, the safety is higher and more, and the isolating switch is low-voltage electrical equipment commonly used in a circuit and can change the on/off state through front operation or side operation.

The common isolating switch comprises a translational isolating switch and a rotary isolating switch, the common rotary isolating switch comprises an operating mechanism and a plurality of contact modules, wherein the structure of the contact modules determines the arc extinguishing effect of the isolating switch, the appearance structure of the conventional rotary isolating switch is a cuboid, the contact parts of a movable contact assembly and a fixed contact assembly on the same side surface of the adjacent upper and lower contact modules and the adjacent lower contact modules are arranged according to a certain angle, but the traditional rotary isolating switch adopting the upper and lower structure has limitation in application scenes, the application scenes cannot be applied or even the installation can cause inconvenient operation, meanwhile, the rotary isolating switch adopting the vertical arrangement of the conventional contact modules does not have a tripping function or the tripping function needs to be realized by additionally adding accessories, so that the volume and the product cost of the whole switch are increased, and simultaneously, the reliability of the isolating switch is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that the conventional rotary isolating switch cannot realize a tripping function or needs to be additionally provided with accessories to realize the tripping function, the volume and the product cost of the whole switch are increased, and the reliability of the isolating switch is reduced.

Technical scheme

In order to achieve the technical object, the utility model provides a locking and unlocking mechanism of a disconnecting switch, which is characterized in that: the lock catch is arranged on the operating mechanism and positioned in the cavity III.

Further, operating device includes the handle pivot, the dress of handle pivot pivoted is on the unit box, annular connecting rod one end with the handle pivot is connected, and the other end dress is downthehole at the linkage spout of support one end, the support is installed through axle one on the unit box and can wind one-axle rotates, the support other end is equipped with the linkage connecting rod through two rotatable being equipped with of axle, the linkage connecting rod can wind two rotations of axle, linkage connecting rod one end is connected with reset spring.

Further, the linkage connecting rod is in lap joint with the shaft for matching and limiting.

Furthermore, the lock catch is rotatably connected with the support through the rotating shaft, the other end of the annular connecting rod penetrates through a linkage sliding slot hole in the support and then is in lap joint with the lock catch, the draw bar corresponds to the lock catch, when the switch is switched on, the handle drives the annular connecting rod through the handle rotating shaft to drive the support and the lock catch to be self-locked after rotation, so that the four-bar mechanism formed by the handle rotating shaft, the annular connecting rod, the support and the lock catch is locked, and when the switch is released, the draw bar rotates to push the lock catch to rotate to release the locking of the annular connecting rod, so that the four-bar mechanism formed by the handle rotating shaft, the annular connecting rod, the support and the lock catch is unlocked.

Furthermore, one end of the return spring is connected to the linkage connecting rod, and the other end of the return spring is arranged on the unit box.

Further, the drawbar is mounted on the cell box.

Advantageous effects

According to the locking and unlocking mechanism of the isolating switch, the operating mechanism and the contact system of the rotary switch are arranged in the horizontal direction, the application scene range of the rotary isolating switch is enlarged, and the tripping functional part is directly arranged in the rotary isolating switch, so that the size of a switch product is reduced, the product cost is reduced, and the reliability and the safety of the use of the isolating switch are improved.

Drawings

Fig. 1 is a diagram of a product of an isolating switch in an embodiment of the utility model.

Fig. 2 is an exploded view of a disconnector according to an embodiment of the utility model.

Fig. 3 is an exploded view of the housing and the unit case according to the embodiment of the present invention.

FIG. 4 is a schematic diagram of a chamber layout according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of an operating mechanism in an embodiment of the present invention;

FIG. 6a is a schematic view of a contact support I or a contact support II according to an embodiment of the present invention;

FIG. 6b is a schematic diagram of one or two positions of a sliding slot hole in the embodiment of the present invention;

FIG. 7a is a schematic structural diagram of a moving contact I or a moving contact II in the embodiment of the utility model;

FIG. 7b is a schematic view of a first movable contact or a second movable contact according to an embodiment of the present invention;

FIG. 7c is a schematic view of a second installation of the moving contact I or the moving contact II in the embodiment of the utility model;

FIG. 8 is a schematic structural diagram of a branch A according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of the structure of branch B in the embodiment of the present invention;

FIG. 10 is a schematic view showing the installation position of branch A in the embodiment of the present invention;

FIG. 11 is a schematic view showing the installation position of branch B in the embodiment of the present invention;

FIG. 12 is a schematic view of the position of the operating mechanism in an embodiment of the present invention;

figure 13 is a schematic view of the mounting of a second contact system in an embodiment of the utility model;

FIG. 14 is a schematic view of linkage connecting rod and linkage shaft connection in an embodiment of the present invention;

FIG. 15a is a schematic diagram of the first position of the linkage link with the first contact support and the second contact support according to the embodiment of the present invention;

FIG. 15b is a schematic diagram of the second position of the linkage link with the first contact support and the second contact support according to the embodiment of the present invention;

FIG. 16 is a schematic diagram of the breakpoints in the embodiment of the present invention;

figure 17 is a schematic view of a contact system installation in accordance with an embodiment of the utility model;

FIG. 18 is a schematic view of an embodiment of the present invention within a cell box in an open state;

FIG. 19 is a schematic diagram of a unit box in a closing state according to an embodiment of the present invention;

FIG. 20a is a first schematic diagram of a four-bar linkage mechanism according to an embodiment of the present invention in an open state;

FIG. 20b is a schematic view of a second four-bar linkage mechanism in an open state according to the embodiment of the present invention;

fig. 21a is a schematic view of a four-bar linkage mechanism in a closing state according to an embodiment of the present invention;

fig. 21b is a schematic diagram of a four-bar linkage mechanism in a closing state according to the embodiment of the present invention;

fig. 22a is a schematic diagram of the first embodiment of the present invention in a tripped state.

Fig. 22b is a schematic diagram of the second embodiment of the present invention in a tripped state.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Examples

As shown in fig. 1,2, 3 and 4, an isolating switch comprises a shell 1 and a unit box 2, wherein the unit box 2 is arranged in an inner cavity of the shell 1, an outer wall of one side of the unit box 2 and an inner wall of one corresponding side of the shell 1 form a cavity a, an outer wall of the other side of the unit box 2 and an inner wall of the other corresponding side of the shell 1 form a cavity di, a cavity tri c is arranged in the unit box 2, the cavity a and the cavity di b are respectively arranged at two sides of the cavity tri c, an operating mechanism is arranged in the cavity tri c, a contact system 3 and an arc extinguish chamber 4 are arranged in the cavity a and the cavity di b, a handle assembly 5 comprises a handle 5a and a handle connecting rod 5b, and the handle connecting rod 5b penetrates through via holes in the shell 1 and the unit box 2 and is fixedly connected with a handle rotating shaft 8. As shown in fig. 18, the lock catch 7 is mounted on the operating mechanism in the cavity tri c. The handle assembly 5 drives the linkage shaft 6 through the operating mechanism to drive the contact system 3 to carry out switching-on and switching-off operation, so that the on-off of the isolating switch is realized.

More specifically, as shown in fig. 3 and 4, the unit box 2 includes a left unit box cover 201 and a right unit box cover 202, the housing 1 includes a left housing cover 101 and a right housing cover 102, the left unit box cover 201 and the right unit box cover 202 are assembled to form a cavity tri c, the left housing cover 101 and the left unit box cover 201 are assembled to form a cavity i, and the right housing cover 102 and the right unit box cover 202 are assembled to form a cavity di b.

As shown in fig. 5, 12 and 13, the operating mechanism includes a handle rotating shaft 8, the handle rotating shaft 8 is rotatably installed on the unit box 2, one end of an annular connecting rod 9 is connected with the handle rotating shaft 8, the other end of the annular connecting rod is installed in a linkage sliding slot hole 10a at one end of a support 10, the support 10 is installed on the unit box 2 through a first shaft 11 and can rotate around the first shaft 11, meanwhile, as shown in fig. 18 and 19, a linkage connecting rod 13 is rotatably installed at the other end of the support 10 through a second shaft 12, the linkage connecting rod 13 can rotate around the second shaft 12, and the linkage connecting rod 13 is in lap joint and matching with the first shaft 11 for limiting. One end of the linkage connecting rod 13 is connected with a return spring 14, and a linkage shaft 6 is arranged in a linkage groove hole 13a at the other end as shown in figure 14, in the embodiment, one end of the return spring 14 is connected to the linkage connecting rod 13, and the other end is arranged on the unit box 2.

As shown in fig. 18 and 19, the lock catch 7 is rotatably connected with the bracket 10 through a rotating shaft 15, the other end of the annular connecting rod 9 passes through the linkage slide slot hole 10a on the bracket 10 and then is in lap joint with the lock catch 7, and the traction rod 16 is installed on the unit box 2 corresponding to the lock catch 7.

As shown in fig. 2,6a, 6b,7a,7b, 7c and 17, the contact system 3 includes a contact system 3a and a contact system two 3b, the arc-extinguishing chamber 4 includes an arc-extinguishing chamber one 4a and an arc-extinguishing chamber two 4b, the contact system 3a and the arc-extinguishing chamber one 4a are installed in the cavity one a, and the contact system two 3b and the arc-extinguishing chamber two 4b are installed in the cavity two b. The first arc extinguishing chambers 4a are arranged in the first cavity a and located on a contact support 3a01 rotation track, and the number of the first arc extinguishing chambers 4a is 2. The second arc extinguishing chamber 4b is installed in the second cavity b and located on a rotating track of the second contact support 3b01, and the number of the second arc extinguishing chambers 4b is 2.

As further shown in fig. 6a, 6b,7a,7b and 7c, the contact system 3a includes a contact support-3 a01, the contact support-3 a01 is located in a mounting slot-a 1 in cavity-a as shown in fig. 10 and is rotatably mounted in cavity-a by a mounting shaft-a 2. The movable contact one 3a02 is arranged in a sliding slot one 3a0101 on the contact support one 3a01 and can slide back and forth in the sliding slot one 3a0101, two ends of the movable contact one 3a02 are located outside the sliding slot one 3a0101, a limiting hole one 3a0201 and a limiting hole two 3a0202 are arranged on the movable contact one 3a02, and the limiting shaft one 3a03 and the limiting shaft two 3a04 pass through the corresponding limiting hole one 3a0201 and the limiting hole two 3a0202 and are installed on the contact support one 3a 01. As shown in fig. 15a and 15b, the contact support one 3a01 is provided with a linkage hole one 3a0102, and one end of the linkage shaft 6 passes through an arc-shaped through hole one 201a shown in fig. 2 on the left cover 201 of the unit box and is arranged in the linkage hole one 3a 0102. In this embodiment, the first limiting hole 3a0201 and the second limiting hole 3a0202 are waist-shaped limiting holes.

As shown in fig. 6a, 6b,7a,7b and 7c, the second contact system 3b includes a second contact support 3b01, and the second contact support 3b01 is located in a second mounting slot 1 in the second cavity illustrated in fig. 11 and is rotatably mounted in the second cavity by a second mounting shaft 2. The movable contact two 3b02 is arranged in a sliding slot two 3b0101 on the contact support two 3b01 and can slide back and forth in the sliding slot two 3b0101, two ends of the movable contact two 3b02 are located outside the sliding slot two 3b0101, a limiting hole three 3b0201 and a limiting hole four 3b0202 are arranged on the movable contact two 3b02, and the limiting shaft three 3b03 and the limiting shaft four 3b04 penetrate through the corresponding limiting hole three 3b0201 and the limiting hole four 3b0202 and are installed on the contact support two 3b 01. As shown in fig. 15a and 15b, a linkage hole two 3b0102 is provided on the contact support two 3b01, and the other end of the linkage shaft 6 passes through an arc-shaped through hole two 202a shown in fig. 2 on the right cover 202 of the unit box and is installed in the linkage hole two 3b 0102. In this embodiment, the third limiting hole 3b0201 and the fourth limiting hole 3b0202 are waist-shaped limiting holes.

As shown in fig. 2 and 16, the movable contact one 3a02 and the movable contact two 3b02 are arranged in a staggered manner. As shown in fig. 8, 9,10 and 11, two ends of the moving contact one 3a02 are respectively provided with a moving contact one 3a0203 and a moving contact two 3a0204, two ends of the moving contact two 3b02 are respectively provided with a moving contact three 3b0203 and a moving contact four 3b0204, two ends of the moving contact one 3a02 are respectively corresponding to a fixed contact assembly one 3a05 and a fixed contact assembly two 3a06 which are arranged in the cavity one a, two ends of the moving contact two 3b02 are respectively corresponding to a fixed contact assembly three 3b05 and a fixed contact assembly four 3b06 which are arranged in the cavity two b, the fixed contact assembly one 3a05 comprises a wiring board one 3a0501, a fixed contact one 3a0502 and a fixed contact one 3a0503, the fixed contact assembly two 3a06 comprises a0601, a fixed contact two 3a0602 and a0603 b0503, the fixed contact assembly three 0503 b05 comprises a three 0503 b0503, the fixed contact assembly four 3b06 includes a terminal plate four 3b0601, a fixed contact four 3b0602 and a fixed contact four 3b 0603. In the embodiment, the first wiring board 3a0501 and the first static contact 3a0502 are integrated, and the first static contact 3a0503 is arranged at the contact end of the first static contact 3a 0502; the wiring board II 3a0601 and the static contact II 3a0602 are integrated, and the static contact II 3a0603 is arranged at the contact end of the static contact II 3a 0602; the wiring board III 3b0501 and the static contact III 3b0502 are integrated, and the static contact III 3b0503 is arranged at the contact end of the static contact III 3b 0502; the terminal plate four 3b0601 and the fixed contact four 3b0602 are integrated, and the fixed contact four 3b0603 is arranged at the contact end of the fixed contact four 3b 0602.

As shown in fig. 8 and 10, the first terminal board 3a0501, the first fixed contact 3a0502, the first fixed contact 3a0503, the second movable contact 3a0204, the first movable contact 3a02, the first movable contact 3a0203, the second fixed contact 3a0603, the second fixed contact 3a0602 and the second terminal board 3a0601 are sequentially connected in series to form a branch a; as shown in fig. 9 and 11, a wiring board three 3B0501, a fixed contact three 3B0502, a fixed contact three 3B0503, a moving contact three 3B0203, a moving contact two 3B02, a moving contact four 3B0204, a fixed contact four 3B0603, a fixed contact four 3B0602 and a wiring board four 3B0601 are sequentially connected in series to form a branch circuit B.

As shown in fig. 8, 9,10, 11 and 16, the first moving contact 3a0203 forms a fracture M with the second fixed contact 3a0603, the second moving contact 3a0204 forms a fracture K with the first fixed contact 3a0503, the third moving contact 3b0203 forms a fracture Q with the third fixed contact 3b0503, and the fourth moving contact 3b0204 forms a fracture P with the fourth fixed contact 3b 0603. Generally speaking, due to machining errors and dimensional tolerances, when a circuit breaker is switched on, the moving contacts at two ends of the moving contact one 3a02 or the moving contact two 3b02 cannot be simultaneously contacted with corresponding fixed contacts, so in this embodiment, the moving contact one 3a02 or the moving contact two 3b02 can slide, when any one of the fracture M, the fracture K, the fracture Q and the fracture P completes a switching action, the moving contact one 3a02 or the moving contact two 3b02 can slide in the corresponding sliding slot one 3a0101 or the sliding slot two 3b0101 to ensure that the moving contact at the other end of the moving contact one 3a02 or the moving contact two 3b02 is contacted with the corresponding fixed contact to realize switching on of the other fracture, then the linkage shaft 6 continues to move in the linkage slot 13a, and the other end of the linkage shaft 6 drives the moving contact at the other end of the contact system to make the corresponding moving contact with the corresponding fixed contacts sequentially contact so as to complete switching on the two remaining switching-on contacts And (6) acting.

During closing, external force drive handle subassembly 5 drives handle pivot 8 rotates around rotation center O1, handle pivot 8 rotates, through with the tie point O2 of annular connecting rod 9 is right annular connecting rod 9 effect makes its motion, annular connecting rod 9 motion drives support 10 rotates around its self rotation center O3 and hasp 7 around its self rotation center O4, and after closing the completion, thereby annular connecting rod 9 and the locking of the four-bar linkage that hasp 7 formed are realized to annular connecting rod 9 and hasp 7 auto-lock as shown in 19,21a and 21b of attached drawing. When tripping is performed, the traction rod 16 rotates around a rotation center O5 to push the latch 7 to push the push force F to rotate the latch 7 to release the locking of the latch 7 on the annular connecting rod 9, so as to unlock the four-bar linkage formed by the handle rotating shaft 8, the annular connecting rod 9, the bracket 10 and the latch 7, as shown in fig. 22 a. After the four-bar linkage mechanism is unlocked, under the action of a handle spring force, the handle rotating shaft 8 rotates around a rotating center O1 to drive the annular connecting rod 2 to move, meanwhile, under the action of a reset force f of a reset spring 14 shown in fig. 22b, the linkage connecting rod 13 is in lap joint rotation on the first shaft 11 and drives the support 10 to rotate around the first shaft 11 through the second shaft 12, the annular connecting rod 2 moves along a linkage sliding slot hole 10a in the support 10, and the process of releasing and unlocking is completed and is shown in fig. 20a,20b,21a,22a and 22 b.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. A locking and unlocking mechanism of a disconnecting switch is characterized in that: the lock catch (7) is arranged on the operating mechanism and is positioned in the cavity III (c);

operating device includes handle pivot (8), handle pivot (8) pivoted dress is on unit box (2), annular connecting rod (9) one end with handle pivot (8) are connected, and the other end dress is in linkage sliding groove hole (10a) on support (10) one end, install support (10) through an axle (11) on unit box (2) and can wind axle (11) rotate, the rotatable linkage connecting rod (13) that is equipped with of support (10) other end through axle two (12), linkage connecting rod (13) can wind axle two (12) rotate, linkage connecting rod (13) one end is connected with reset spring (14).

2. The locking and unlocking mechanism of a disconnecting switch according to claim 1, wherein: the linkage connecting rod (13) is in lap joint with the first shaft (11) for matching and limiting.

3. The locking and unlocking mechanism of a disconnecting switch according to claim 1, wherein: the lock catch (7) is rotationally connected with the support (10) through a rotating shaft (15), the other end of the annular connecting rod (9) penetrates through a linkage sliding slot hole (10a) in the support (10) and then is in lap joint fit with the lock catch (7), the draw bar (16) corresponds to the lock catch (7), when the switch is switched on, the handle (5) drives the annular connecting rod (9) through the handle rotating shaft (8) to drive the bracket (10) and the lock catch (17) to rotate and then to be self-locked, so that the four-bar mechanism formed by the handle rotating shaft (8), the annular connecting rod (9), the bracket (10) and the lock catch (7) is locked, and when the handle is released, the draw bar (16) rotates to push the lock catch (7) to rotate to release the lock of the lock catch (7) on the annular connecting rod (9), so that the unlocking of a four-bar mechanism formed by the handle rotating shaft (8), the annular connecting rod (9), the support (10) and the lock catch (7) is realized.

4. The locking and unlocking mechanism of a disconnecting switch according to claim 1, wherein: one end of the return spring (14) is connected to the linkage connecting rod (13), and the other end of the return spring is arranged on the unit box (2).

5. The locking and unlocking mechanism of a disconnecting switch according to claim 3, wherein: the draw bar (16) is mounted on the unit box (2).

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