CN221040927U - Switch-on unit and isolating switch - Google Patents

Abstract

The contact mechanism comprises two fixed contacts and a movable contact bridge rotatably arranged between the two fixed contacts, each fixed contact comprises two connecting parts, the connecting parts of the same switching-on unit are matched with the same side of the shell to be used for connecting wires with the outside, and the fixed contacts of two adjacent switching-on units are correspondingly overlapped in the axial direction. In the utility model, each static contact is provided with two connecting parts which can be used for wiring, the connecting parts are matched with the same side of the shell for wiring, the operation is convenient, and the adjacent two static contacts are overlapped in the axial direction, so that the adjacent two shells can adopt the same structure, and the processing and the assembly are facilitated.

Description

Switch-on unit and isolating switch

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a switching-on unit and an isolating switch.

Background

With the rapid development of the photovoltaic industry, the isolating switch is widely applied. The disconnector generally comprises a plurality of switching-on units arranged in a stack, each switching-on unit being provided with a wire inlet end and a wire outlet end, between which a contact means is connected for switching on or off a main wire connected between the wire inlet end and the wire outlet end.

Along with the diversity of application scenes of the product, different demands are also made on the wiring modes of the product, however, in the existing product, the wire inlet end and the wire outlet end of the product are respectively positioned on two opposite sides of the connection unit, and the following defects exist: firstly, the static contacts in two adjacent layers of connection units are arranged in a shifting and dislocation mode, and the two connection units adopt different structures, so that the processing of a shell is not facilitated, and the assembly difficulty is increased; secondly, the wire inlet end and the wire outlet end are only provided with one connecting terminal for connecting wires, so that various wiring requirements cannot be met; thirdly, when the wire inlet end or the wire outlet end is respectively provided with more than one wire terminal, operation wiring is carried out from different sides of the shell, and the occupied space is large.

Disclosure of Invention

The utility model aims to overcome at least one defect of the prior art and provide the switching-on unit and the isolating switch which have simple structure, various wiring modes and simple operation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a switching-on unit which comprises a shell and a contact mechanism arranged in the shell, wherein the contact mechanism comprises two fixed contacts and a movable contact bridge rotatably arranged between the two fixed contacts, each fixed contact comprises two connecting parts, the connecting parts of the same switching-on unit are matched with the same side of the shell and are used for connecting wires with the outside, and the fixed contacts of two adjacent switching-on units are correspondingly overlapped in the axial direction.

Preferably, two opposite ends of the same side of the housing are used as terminals respectively, each terminal comprises two wiring parts, and each connecting part extends into one wiring part correspondingly.

Preferably, each of the connection portions includes an adjacent operation face and a connection face, the operation faces corresponding to the same side of the housing, each of the connection portions being spaced apart from one of the operation faces.

Preferably, two wiring parts of the same wiring terminal are arranged side by side, and the operation surfaces of two adjacent wiring parts are connected to form a step.

Preferably, the two terminals are respectively used as a wire inlet end and a wire outlet end, the two wire connection parts of the wire inlet end are respectively a first wire inlet part and a second wire inlet part, the two wire connection parts of the wire outlet end are respectively a first wire outlet part and a second wire outlet part, the first wire inlet part and the first wire outlet part correspond to between the two fixed contacts, and the second wire inlet part and the second wire outlet part correspond to outside of the two fixed contacts.

Preferably, at least one wiring part of the wire inlet end is internally provided with a wiring terminal, at least one wiring part of the wire outlet end is internally provided with another wiring terminal, and the wiring terminal is connected with the connecting part for wiring.

Preferably, in the two adjacent connection units, the first wire inlet portion of one wire inlet end and the second wire inlet portion of the other wire inlet end are used for dislocation wire inlet, and the first wire outlet portion of one wire outlet end and the second wire outlet portion of the other wire outlet end are used for dislocation wire outlet.

Preferably, the wiring parts provided with the wiring terminals are respectively provided with an operation hole and a wiring hole, and the operation hole and the wiring hole are respectively positioned on the operation surface and the wiring surface of the same wiring part.

Preferably, the static contact comprises a conductive plate, the conductive plate is arranged along the direction parallel to the wiring surface, the middle edge of the conductive plate extends outwards to form a static contact part, two ends of the conductive plate are respectively bent and extended along the opposite directions to form a connecting part parallel to the operation surface, and the connecting part is provided with a screw hole corresponding to the operation hole.

Preferably, the wiring terminal comprises a wiring piece and a wiring screw, the wiring piece is opposite to the connecting part at intervals, the tail end of the wiring screw penetrates through the wiring piece to be in threaded connection with the connecting part, and the head end of the wiring screw corresponds to an operation hole formed in the operation surface.

The utility model also provides an isolating switch comprising an operating module and a conductive module driven by the operating module, wherein the conductive module comprises at least two switching-on units.

Further, the circuit comprises at least two connection units which are arranged in a stacked mode, and wiring parts of two adjacent connection units are in one-to-one correspondence.

According to the connecting unit and the isolating switch, each static contact is provided with two connecting parts which can be used for wiring, the connecting parts are matched with the same side of the shell for wiring, the operation is convenient, and two adjacent static contacts are overlapped in the axial direction, so that the two adjacent shells can adopt the same structure, and the processing and the assembly are facilitated.

In addition, each connecting part correspondingly extends into one wiring part, in particular, two adjacent wiring parts form a step structure, and the mutual interference of the two adjacent wiring parts is avoided through the height difference of the step structure.

In addition, the two connection parts of the wire inlet end and the two connection parts of the wire outlet end can be freely combined, and various connection modes can be provided.

In addition, the static contact part and the connecting part are integrally formed by the conductive plate of the static contact, so that the number of internal parts is reduced, the wiring is convenient, and the internal space is saved.

In addition, the first wire inlet part and the first wire outlet part are positioned between the two fixed contacts, so that the space between the two fixed contacts is fully utilized, the second wire inlet part and the second wire outlet part are positioned outside the two fixed contacts, and are matched with the first wire inlet part and the second wire inlet part, and the first wire outlet part and the second wire outlet part are respectively in a step shape, so that the mutual interference during wiring is reduced.

Drawings

Fig. 1 is a schematic diagram of the structure of a turn-on unit in the present utility model;

FIG. 2 is a schematic view of the side of the switch-on unit provided with the operation hole in the present utility model;

FIG. 3 is a schematic view of the internal structure of the switch-on unit (with part of the shaft removed) according to the present utility model;

FIG. 4 is a schematic view of the internal structure of the switch-on unit (on the side where the operation hole is provided) in the present utility model;

FIG. 5 is a schematic view of the structure of the contact mechanism and the terminal according to the present utility model;

FIG. 6 is a schematic view of the structure of the stationary contact in the present utility model;

reference numerals:

1-shell, 10-wiring part, 101-operation surface, 102-wiring surface, 103-operation hole, 104-wiring hole, 2-wiring terminal, 21-wiring piece, 22-wiring screw, 3-contact mechanism, 31-movable contact bridge, 32-static contact, 320-conductive plate, 321-static contact part, 322-connecting part, a-connection unit.

Detailed Description

Specific embodiments of the disconnector according to the utility model are further described below with reference to the examples given in the accompanying drawings. The isolating switch of the present utility model is not limited to the description of the following embodiments.

The isolating switch comprises an operating module and a conductive module driven by the operating module, the operating module and the conductive module are arranged in a stacked mode, the operating module comprises an operating mechanism, one end of the operating mechanism serves as a driving end and is in driving connection with the conductive module, and one end of the operating mechanism serves as an operating end and extends out of the module shell 1 to be driven from the outside; the conductive module comprises at least one layer of switching-on units a, each switching-on unit a comprises a shell 1, two opposite ends of the shell 1 are respectively used as wiring terminals, a contact mechanism 3 is arranged in the shell 1 between the two wiring terminals, the contact mechanism 3 is directly or indirectly driven by a driving end to perform switching-on/off rotation, and the contact mechanisms 3 of two adjacent switching-on units a are connected in a linkage manner; each terminal is provided with a terminal 2, and the terminal 2 is electrically connected with the contact mechanism 3 through a conductive member.

Specifically, the contact mechanism comprises a rotating shaft, a movable contact bridge 31 and two fixed contacts 32, wherein the two fixed contacts 32 are arranged in the shell 1 at intervals, the rotating shaft is arranged between the two fixed contacts 32, the movable contact bridge 31 is radially arranged on the rotating shaft, two ends of the movable contact bridge 31 are respectively used as a movable contact part, and each movable contact part is respectively matched with a fixed contact part 321 of one fixed contact 32; an arc extinguishing chamber is further arranged on one side of each static contact 32, and the two arc extinguishing chambers form a rotationally symmetrical structure about the axis of the contact mechanism and are used for extinguishing an electric arc generated when the contact mechanism is disconnected, and the matching mode of the arc extinguishing chambers is the prior art.

The improvement of the application is that each fixed contact 32 comprises two connecting parts 322, the connecting parts 322 of the same connecting unit a are matched with the same side of the shell 1 for external wiring, and the fixed contacts 32 of two adjacent connecting units a are correspondingly overlapped in the axial direction.

Therefore, each static contact 32 is provided with two connecting parts 322 which can be used for wiring, the connecting parts 322 are matched with the same side of the shell 1 for wiring, the operation is convenient, and the two adjacent static contacts 322 are overlapped in the axial direction, so that the two adjacent shells 1 can adopt the same structure, and the processing and the assembly are facilitated.

Further, the opposite ends of the same side of the housing 1 are respectively used as terminals, each terminal includes two connection portions 10, each connection portion 322 correspondingly extends into one connection portion 10, wherein the two terminals are divided into one incoming line end and one outgoing line end, the two connection portions 10 of each terminal are arranged side by side, each connection portion 10 includes an adjacent operation surface 101 and a connection surface 102, that is, the operation surface 101 is connected with the connection surface 102 in an included angle, wherein the operation surfaces correspond to the same side of the housing 1, preferably, the operation surfaces 101 of the adjacent two connection portions 10 are connected to form a step, and the distance between the two connection portions 322 is increased by the height difference of the step structure, so that mutual interference during connection is avoided.

Further, at least one of the wire inlet ends 10 is internally provided with one wire connecting terminal 2, at least one wire outlet end 10 is internally provided with another wire connecting terminal 2, the wire connecting terminal 2 arranged in the wire connecting portion 10 is correspondingly connected with the connecting portion 322, the wire connecting portion 10 provided with the wire connecting terminal 2 is provided with an operation hole 103 and a wire connecting hole 104, the operation hole 103 and the wire connecting hole 104 are respectively positioned on the operation surface 101 and the wire connecting surface 102 of the same wire connecting portion 10, and various wire connection combinations can be provided for the isolating switch.

A specific embodiment of the switch-on unit a is provided in connection with fig. 1-6.

As shown in fig. 1 to 4, the connection unit a includes a housing 1, two ends on the same side of the housing 1 are terminals respectively, two terminals are a wire inlet end and a wire outlet end respectively, corresponding to fig. 1, two opposite ends along the length direction of the housing 1 are terminals respectively, and the terminals are all corresponding to the upper side of the housing 1, one end of the housing 1 on the upper left side of the contact mechanism 3 is used as the wire inlet end, one end of the housing 1 on the upper right side of the contact mechanism 3 is used as the wire outlet end, the contact mechanism 3 is arranged between the two terminals, the contact mechanism 3 includes a rotating shaft, a movable contact bridge 31 and two fixed contacts 32, wherein the rotating shaft is directly or indirectly driven by an operation end, the movable contact bridge 31 is arranged on the rotating shaft along the radial direction of the rotating shaft and rotates between the two fixed contacts 32 along with the rotating shaft, each fixed contact 32 is arranged at a position close to the wire inlet, so that a connecting wire between the two fixed contacts 32 is parallel to a connecting wire between the two terminals, an arc extinguishing chamber is cooperatively arranged on one side of each fixed contact 32, and the two arc extinguishing chambers form a rotationally symmetrical structure about the axis of the contact mechanism 3.

Each terminal is provided with two wiring parts 10, as shown in fig. 1-4, where the two wiring parts 10 of the wiring end are a first wiring part and a second wiring part, the first wiring part and the second wiring part are arranged side by side along the length direction of the shell 1, the protruding heights of the first wiring part and the second wiring part are different to form a staggered step structure, preferably, the protruding height of the wiring part 10 closer to the contact mechanism 3 is larger, in fig. 1, the protruding space is formed by outwards protruding and expanding the side wall (the position of the upper side wall, which is close to the left end and the right end, of the shell 1 can be used as one wiring part 10, so that the position of the shell 1, which is close to the end, forms a step shape, in this embodiment, the protruding heights of the first wiring part and the first wiring part are larger, and the second wiring part is smaller.

Each wiring portion 10 includes adjacent wiring surface 102 and operation surface 101, and operation surface 101 and wiring surface 102 mutually perpendicular and have seted up operation hole 103 and wiring hole 104 respectively, the operation surface 101 of two adjacent wiring portions 10 is connected and is formed the step, all operation surfaces 101 correspond the same side of casing 1, that is in fig. 1, all operation surfaces 101 are towards casing 1 ascending side, first inlet wire portion and second inlet wire portion's wiring surface 102 are located the left side respectively, first outlet wire portion and second outlet wire portion's wiring surface 102 are located the right side respectively, when the wiring, operating tool is through operating from casing 1 upside direction, from the left and right sides inlet wire, the wire is gone out of the left and right sides of casing 1, only involve casing 1's left side, right side and upside, its downside no longer need reserve wiring or operating space, both do benefit to the reduction whole space occupation, also make things convenient for the wiring.

As another embodiment (not shown), the protruding height of the wire connection portion 10 may be smaller as the contact mechanism 3 is located closer, in which case the left sides of the first wire connection portion and the second wire connection portion are the wire connection surfaces 102, the right sides of the first wire connection portion and the second wire connection portion are the wire connection surfaces 102, and the upper side walls of all the wire connection portions 10 are the operation surfaces 101.

Further, at least one wire connection portion 10 in each terminal is located between two fixed contacts 32, in this embodiment, the first wire connection portion and the first wire connection portion are located between two fixed contacts 32, so that a space between a moving contact and a fixed contact 32 can be fully utilized, preferably, the first wire connection portion and the first wire connection portion are respectively opposite to the fixed contact portion 321 of each adjacent fixed contact 32 at intervals, the second wire connection portion and the second wire connection portion are located outside two fixed contacts 32, so that the first wire connection portion and the second wire connection portion are respectively located on the inner side and the outer side of one fixed contact 32, the first wire connection portion and the second wire connection portion are respectively located on the inner side and the outer side of the other fixed contact 32, and are matched with the first wire connection portion and the second wire connection portion, and the first wire connection portion and the second wire connection portion are arranged in a step shape, so that a space between two adjacent wire connection portions 10 is increased, and interference between the adjacent wire connection portions 10 is reduced.

A wiring terminal 2 may be disposed inside each wiring portion 10, each wiring terminal 2 includes a wiring member 21 and a wiring screw 22, in fig. 1, 3 and 5, the wiring member 21 is a plate-shaped structure parallel to the operation surface 101, a hole through which the tail end of the wiring screw 22 passes is formed in the middle of the wiring member 21, the tail end of the wiring screw 22 is in threaded connection with a conductive member connected to the contact mechanism 3, so that a wiring gap is left between the wiring member 21 and the conductive member, the wiring gap may correspond to the wiring hole 104, and an external wire is beneficial to being in clearance fit with the wiring after passing through the wiring hole 104.

In this embodiment, the rotating shaft of the contact mechanism 3 and the movable contact bridge 31 may adopt the prior art, each static contact 32 is connected with the adjacent connection terminal 2, that is, each static contact 32 includes a static contact portion 321 and two connection portions 322, where the static contact portion 321 is used to cooperate with one movable contact portion of the movable contact bridge 31, each connection portion 322 extends into the connection portion 10, and each connection portion 322 is spaced from the operation surface 101 of the connection portion 10 relatively for cooperation with the connection terminal 2, so that a conductive member disposed between the static contact 32 and the connection terminal 2 may be omitted, which is beneficial to reducing the usage of parts.

As shown in fig. 1 and 3-6, the static contact 32 includes a conductive plate 320, the conductive plate 320 is a straight plate structure, the plate surface of the conductive plate 320 is parallel to the plane where the connection surface 102 is located, the conductive plate 320 is disposed along the direction parallel to the connection surface 102, in the figure, the conductive plate 320 is located between two adjacent connection portions 10, the middle edge of the conductive plate 320 extends outwards to form a static contact portion 321, in the figure, the plane where the static contact portion 321 is located is perpendicular to the plane where the conductive plate 320 is located and the operation surface 101, two ends of the conductive plate 320 are respectively bent and extended along opposite directions to form connection portions 322 parallel to the operation surface 101, the plane where each connection portion 322 is located is parallel to the operation surface 101 as shown in fig. 3, 5 and 6, and each connection portion 322 is provided with a screw hole for being in threaded connection with a connection screw 22, in fig. 6, one connection portion 322 is located on the same side of the conductive plate 320 as the static contact portion 321, the other connection portion 322 is located on one side opposite to the static contact portion 321, the connection portion 322 located on the same side as the static contact portion 321 (the back portion 321 is located at the same side as the height of the protruding portion 10) and extends to the connection portion 10 to the opposite to the static contact portion 22, and is preferably located at the height of the connection portion 2 is extended to the connection portion 2, and the connection portion is approximately extended to the connection portion 2.

In this embodiment, four connection terminals 2 may be disposed in the connection unit a at the same time, that is, one connection terminal 2 may be disposed in each of the first wire inlet portion, the second wire inlet portion, the first wire outlet portion, and the second wire outlet portion, and selectively connect wires according to actual needs, for example, one wire inlet is selected from the first wire inlet portion and the second wire inlet portion, one wire outlet is selected from the first wire inlet portion and the second wire outlet portion, or one wire inlet is selected from the first wire inlet portion and the second wire inlet portion, the first wire outlet portion and the second wire outlet portion are both used for wire outlet, or the first wire inlet portion and the second wire inlet portion are both used for wire inlet, and the first wire outlet portion and the second wire outlet portion are both used for wire outlet. The specific connection position can be selected at will, the wiring selectivity is more, and different wiring requirements can be met through mutual combination.

The isolating switch comprises an operation module and a conductive module driven by the operation module, as shown in fig. 2 and 4, the conductive module comprises at least two switch-on units a in the above embodiment, when the conductive module comprises two or more switch-on units a which are stacked, the wiring parts 10 of two adjacent switch-on units a are in one-to-one correspondence, and the static contacts 32 in the two adjacent switch-on units are mutually overlapped in the axial direction, so that the same shell 1 is conveniently adopted by the multiple switch-on units a, and the processing and the assembly are facilitated.

When the wire inlet end or the wire outlet end of each of the switching units a is wired using one of the wire connection parts 10, the wire connection parts 10 not used for the wiring remain closed, and in this embodiment, the wire connection parts 10 remain closed means that the operation surface 101 and the wire connection surface 102 of the wire connection parts 10 are not provided with the operation hole 103 and the wire connection hole 104 any more, and whether or not the wire connection terminal 2 is provided therein is not limited.

Preferably, the wire inlet ends of the two adjacent connection units a adopt dislocation wire inlet, the wire outlet ends of the two adjacent connection units a adopt dislocation wire outlet, namely, a connecting terminal 2 is arranged in a first wire inlet part of one connection unit a for wire inlet, a second wire inlet part is kept closed, a connecting terminal is arranged in a second wire inlet part of the adjacent connection unit a for wire inlet, and the first wire inlet part is kept closed; one connecting terminal 2 is arranged in the first wire outlet part of one connecting unit a and used for wire outlet, the second wire outlet part is kept closed, one connecting terminal is arranged in the second wire outlet part of the adjacent connecting unit and used for wire outlet, and the first wire outlet part is kept closed.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (12)

1. The contact mechanism (3) comprises two fixed contacts (32) and a movable contact bridge (31) rotatably arranged between the two fixed contacts (32), and the contact mechanism is characterized in that each fixed contact (32) comprises two connecting parts (322), the connecting parts (322) of the same contact unit (a) are matched with the same side of the shell (1) to be used for connecting wires with the outside, and the fixed contacts (32) of two adjacent contact units (a) are correspondingly overlapped in the axial direction.

2. The switch-on unit according to claim 1, characterized in that: opposite ends of the same side of the shell (1) are respectively used as wiring terminals, each wiring terminal comprises two wiring parts (10), and each connecting part (322) correspondingly extends into one wiring part (10).

3. The switch-on unit according to claim 2, characterized in that: each connection part (10) comprises an adjacent operation surface (101) and a connection surface (102), the operation surfaces (101) correspond to the same side of the shell (1), and each connection part (322) is respectively opposite to one operation surface (101) at intervals.

4. A switch-on unit according to claim 3, characterized in that: two wiring parts (10) of the same wiring terminal are arranged side by side, and the operation surfaces (101) of the adjacent two wiring parts (10) are connected to form steps.

5. The switch-on unit according to claim 3 or 4, characterized in that: the two wiring terminals are respectively used as a wire inlet end and a wire outlet end, two wiring parts (10) of the wire inlet end are respectively a first wire inlet part and a second wire inlet part, two wiring parts (10) of the wire outlet end are respectively a first wire outlet part and a second wire outlet part, the first wire inlet part and the first wire outlet part correspond to between two fixed contacts (32), and the second wire inlet part and the second wire outlet part correspond to outside of the two fixed contacts (32).

6. The switch-on unit of claim 5, wherein: the wire inlet end is internally provided with at least one wiring part (10) with one wiring terminal (2), the wire outlet end is internally provided with at least one wiring part (10) with the other wiring terminal (2), and the wiring terminal (2) is connected with the connecting part (322) for wiring.

7. The switch-on unit of claim 6, wherein: in the two adjacent connection units (a), a first wire inlet part of one wire inlet end and a second wire inlet part of the other wire inlet end are used for dislocation wire inlet, and a first wire outlet part of one wire outlet end and a second wire outlet part of the other wire outlet end are used for dislocation wire outlet.

8. The switch-on unit of claim 6, wherein: the wiring part (10) provided with the wiring terminal (2) is provided with an operation hole (103) and a wiring hole (104) respectively, and the operation hole (103) and the wiring hole (104) are respectively positioned on an operation surface (101) and a wiring surface (102) of the same wiring part (10).

9. The switch-on unit of claim 8, wherein: the static contact (32) comprises a conducting plate (320), the conducting plate (320) is arranged along the direction parallel to the wiring surface (102), the middle edge of the conducting plate (320) extends outwards to form a static contact portion (321), two ends of the conducting plate (320) bend and extend along opposite directions respectively to form a connecting portion (322) parallel to the operation surface (101), and the connecting portion (322) is provided with a screw hole corresponding to the operation hole (103).

10. The switch-on unit of claim 8, wherein: binding post (2) include wiring spare (21) and binding screw (22), wiring spare (21) are opposite with connecting portion (322) interval, and the tail end of binding screw (22) passes the threaded connection of wiring spare (21) and connecting portion (322), and the head end of binding screw (22) corresponds with operating hole (103) of seting up in operation face (101).

11. Disconnecting switch, including operation module and by operation module driven conductive module, its characterized in that: the conductive module comprising at least two switching-on units according to any of claims 1-10.

12. The disconnector according to claim 11, characterized in that: at least comprises two connection units which are arranged in a stacked manner, and the wiring parts (10) of the two adjacent connection units are in one-to-one correspondence.