CN211578623U - Combined switch - Google Patents

Abstract

The utility model provides a combination switch, is including the first apron that sets gradually and the contact layer of a plurality of range upon range of settings, first apron all is equipped with the shaft hole that is used for installing the pivot and is equipped with the mounting hole at the bilateral symmetry in shaft hole with the middle part of every contact layer, all is equipped with between the contact layer of first apron and next-door neighbour and between two adjacent contact layers and is used for installing spacing limit structure, limit structure includes guide way, constant head tank, direction arch and location arch, the guide way forms the line face contact with the protruding cooperation of direction, and the constant head tank is used for preventing the contact layer from taking place the dislocation when the installation with the protruding cooperation of location. The combined switch of the utility model provides axial friction for the guide bulge by making the guide groove and the guide bulge form line-surface contact, counteracts the axial component force formed by the side-turning moment generated by the bracket and the spring and reduces the processing precision and cost; in addition, under the matching of the positioning groove and the positioning bulge, the contact layer cannot be dislocated in the installation process, and the assembly efficiency is improved.

Description

Combined switch

Technical Field

The utility model relates to a switch, concretely relates to combination switch.

Background

The combined switch adopts a structure formed by overlapping a plurality of layers of contact systems, but in the assembling process, the contact system on the upper layer can be subjected to the overturning moment of the bracket of the contact system on the lower layer. At present, products on the market are not provided with a structure for axial positioning between contact systems, and if the products are not pressed by external force in the assembling process, the situation that a support spring of the contact system pops out of the contact system can occur, so that interference is generated on assembling work, and the assembling efficiency is influenced.

At present, in order to solve the problems, a boss and a hole are usually arranged between an upper layer contact system and a lower layer contact system, and an axial friction force is generated by interference fit of the boss and the hole and is used for offsetting an axial component force formed by a side turning moment of a support in the contact system and preventing a spring from popping out of the contact system. However, the interference fit between the conventional cylindrical boss and the hole is surface-to-surface contact, which has the following difficulties: firstly, the axial friction force is sensitive to the interference magnitude of the boss and the hole, so that the magnitude of the axial friction force is difficult to control; secondly, in order to control the magnitude of the axial friction force, the precision requirement on the boss and the hole is high, and the part processing cost is increased.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, combination switch that the reliability is high.

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

the utility model provides a combination switch, is including the first apron that sets gradually and the contact layer of a plurality of range upon range of settings, first apron all is equipped with the shaft hole that is used for installing the pivot and is equipped with the mounting hole at the bilateral symmetry in shaft hole with the middle part of every contact layer, all is equipped with between the contact layer of first apron and next-door neighbour and between two adjacent contact layers and is used for installing spacing limit structure, limit structure includes guide way, constant head tank, direction arch and location arch, the guide way forms the line face contact with the protruding cooperation of direction, and the constant head tank is used for preventing the contact layer from taking place the dislocation when the installation with the protruding cooperation of location.

Furthermore, at least three right-angled convex edges which are in line-surface contact with the guide protrusions are arranged in the guide groove, the right-angled convex edges are axially arranged in the guide groove, and the right-angled convex edges are circumferentially and uniformly arranged on the side wall of the guide groove at intervals.

Further, each contact layer comprises a contact system and a base for mounting the contact system; the contact system is arranged on one side, facing the first cover plate, of the base, and two first arc-shaped bulges, two second arc-shaped bulges and two sliding grooves are formed in one side, provided with the contact system, of the base; the first arc-shaped bulges surround the periphery of the shaft hole and are encircled to form a cam mounting groove with two same openings, the middle part of each first arc-shaped bulge is provided with a mounting bulge, and the mounting bulge is provided with a mounting hole; the second arc-shaped bulges are symmetrically arranged at the edge of the base in a surrounding way, and the middle part of each second arc-shaped bulge corresponds to one opening; the sliding groove extends into the cam mounting groove through an opening, one end of the sliding groove is communicated with the shaft hole, and the other end of the sliding groove is connected with the middle part of the second arc-shaped bulge;

the contact system comprises two cams, a bracket, a static contact piece, a movable contact piece and a spring; the bracket is arranged in the open port, one end of the bracket extends into the cam mounting groove, the other end of the bracket is connected with the movable contact piece, and a spring is arranged between the movable contact piece and the second arc-shaped bulge; static contact fixed mounting is between first arc arch and uncovered, and two cams all are equipped with two breach portions of a breach portion and two cams and correspond two uncovered respectively, and two cam covers are located in the pivot and rotate along with the pivot in the cam mounting groove, and the cam is in the part or the breach portion and the support cooperation of rotation in-process non-breach portion, promotes the support and makes the movable contact close or break off with the static contact under the effect of spring.

Furthermore, the guide bulge is arranged on the second arc-shaped bulge in a protruding mode, the positioning bulge is arranged on the mounting bulge in a protruding mode, and the highest points of the guide bulge and the positioning bulge are higher than the highest point of the static contact piece.

The second cover plate, the base and the partition plate are correspondingly provided with shaft holes for mounting the rotating shaft and mounting holes for mounting the bolts; one end of the rotating shaft penetrates through the partition plate, the base, the second cover plate and the plurality of contact layers in sequence and is rotatably supported on the first cover plate, and the other end of the rotating shaft is provided with a knob; the bolt penetrates through the partition plate, the base, the second cover plate, the contact layers and the first cover plate in sequence to fix the partition plate, the base, the second cover plate, the contact layers and the first cover plate into a whole.

Further, the positioning groove is arranged on one side deviating from the central connecting line of the two mounting holes.

Further, the constant head tank sets up in the one side that the mounting hole is close to the shaft hole, and the one end of constant head tank seals, and the other end and the mounting hole intercommunication of constant head tank.

Further, the inner diameter of the positioning groove is smaller than that of the mounting hole; the highest point of the guide bulge is lower than the highest point of the positioning bulge.

Furthermore, one side of first apron next-door neighbour contact layer is equipped with guide way and constant head tank, and the contact layer is equipped with direction arch and location arch towards one side of first apron, and one side that the contact layer dorsad first apron is equipped with guide way and constant head tank.

Furthermore, the guide grooves are arranged on the edges of the first cover plate and the contact layer; the guide bulge is correspondingly arranged on the edge of the contact layer.

The combined switch of the utility model has the advantages that the limiting structures are arranged between the first cover plate and the contact layer close to the first cover plate and between the two adjacent contact layers, and the combined switch is accurately limited in the assembling process under the matching of the guide groove and the guide bulge as well as the positioning groove and the positioning bulge; the guide groove and the guide protrusion form line-surface contact to provide axial friction force for the guide protrusion, axial component force formed by side turning moment generated by the support and the spring is offset, the situation that the spring pops up due to loose fit in the installation process is prevented, meanwhile, the line-surface contact provides the axial friction force, the machining precision of the guide groove and the guide protrusion is reduced, and the production cost is reduced; in addition, under the matching of the positioning groove and the positioning bulge, the contact layer cannot be dislocated in the installation process, and the assembly efficiency is improved.

In addition, the right-angled convex edges are arranged in the guide grooves, so that the guide grooves form cross-shaped positioning grooves, and the axial friction force of the guide grooves to the guide protrusions is increased uniformly; the positioning groove is arranged on one side deviated from the central connecting line of the two mounting holes to form an asymmetric structure, so that the contact layer is more effectively prevented from being dislocated in the mounting process, the mounting with reversed positions is avoided, and the assembly efficiency is further improved. The guide protrusions and the positioning protrusions protruding out of the contact layer are adopted, so that the height of the guide protrusions and the positioning protrusions is higher than that of the static contact, effective guide is achieved in the assembling process, the situation that internal parts need to be adjusted again after assembly is avoided, and one-step in-place assembling is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of the combination switch of the present invention;

fig. 2 is a schematic diagram of a limit structure of the combination switch of the present invention;

fig. 3 is a schematic structural diagram of the first cover plate of the combination switch of the present invention;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a bottom view of FIG. 3;

FIG. 6 is a schematic structural view of the side of the base with the contact system installed in the combination switch of the present invention;

FIG. 7 is a top view of FIG. 6;

fig. 8 is a schematic structural diagram of a first contact layer of the combination switch of the present invention;

FIG. 9 is a top view of FIG. 8;

FIG. 10 is a bottom view of FIG. 8;

fig. 11 is a schematic structural view of a second contact layer of the combination switch of the present invention;

fig. 12 is a top view of fig. 11.

Detailed Description

The following describes the embodiments of the combination switch of the present invention with reference to the embodiments shown in fig. 1 to 12. The combination switch of the present invention is not limited to the description of the following embodiments.

The utility model provides a combination switch, is including the contact layer of the first apron 1 and a plurality of range upon range of setting that set gradually, first apron 1 all is equipped with the shaft hole 4 that is used for installing the pivot and is equipped with mounting hole 5 at shaft hole 4's bilateral symmetry with the middle part of every contact layer, all is equipped with between the contact layer of first apron 1 and next-door neighbour and between two adjacent contact layers and is used for installing spacing limit structure, limit structure includes guide way 61, constant head tank 63, protruding 62 of direction and location arch 64, guide way 61 forms the line face contact with the protruding 62 cooperation of direction, and constant head tank 63 is used for preventing the contact layer to take place the dislocation when the installation with the protruding 64 cooperation of location.

The combined switch of the utility model has the advantages that the limiting structures are arranged between the first cover plate and the contact layer close to the first cover plate and between the two adjacent contact layers, so that the combined switch is accurately limited in the assembling process under the matching of the guide groove 61, the guide bulge 62, the positioning groove 63 and the positioning bulge 64; the guide groove 61 and the guide protrusion 62 form line-surface contact, axial friction force is provided for the guide protrusion 62, axial component force formed by side turning moment generated by the bracket 82 and the spring 85 is offset, the situation that the spring 85 pops up due to loose fit in the installation process is prevented, meanwhile, the axial friction force provided by the line-surface contact reduces the processing precision of the guide groove 61 and the guide protrusion 62, and the production cost is reduced; in addition, under the matching of the positioning groove 63 and the positioning bulge 64, the contact layer cannot be dislocated in the installation process, and the assembly efficiency is improved.

As shown in fig. 1-2, a combination switch includes a first cover plate 1 and a plurality of stacked contact layers, the number of the contact layers in the figure is two, the contact layer near the first cover plate 1 is used as a first contact layer 2, the contact layer adjacent to the first contact layer 2 is used as a second contact layer 3, the middle parts of the first cover plate 1, the first contact layer 2 and the second contact layer 3 are all provided with a shaft hole 4 for mounting a rotating shaft, and mounting holes 5 are symmetrically arranged on two sides of the shaft hole 4, the first cover plate 1, the first contact layer 2 and the second contact layer 3 are provided with a limiting structure for mounting and limiting, the limiting structure includes a guide groove 61, a positioning groove 63, a guide projection 62 and a positioning projection 64, the guide groove 61 and the guide projection 62 form a line-surface contact, a right-angle rib 611 for reducing a contact area and providing an axial friction force needs to be arranged on the guide groove 61 or the guide projection 62, preferably, a rectangular rib 611 in line-surface contact with the guide protrusion 62 is arranged in the guide groove 61, the rectangular rib 611 is axially arranged on the sidewall of the guide groove 61 and is in line-surface contact with the guide protrusion 62, and the positioning groove 63 is matched with the positioning protrusion 64 for preventing the first contact layer 2 from being dislocated during installation. The rectangular protruding rib 611 in the guide groove 61 is mainly used for forming line-surface contact with the guide protrusion 62, and the guide protrusion 62 is mainly used for guiding during installation, so the shape, number and installation position of the rectangular protruding rib 611, the guide groove 61 and the guide protrusion 62 are not particularly limited. The positioning projections 64 function as guides while allowing the first contact layer 2 to be correctly mounted, and prevent the first contact layer 2 from being mounted in a misaligned, inverted, or the like, and are preferably an asymmetrical structure whose shape, number, and mounting position are not specifically required. The guide projection 62, the location arch 64 of first contact layer 2 and the guide projection 62, the location arch 64 of second contact layer 3 can be the same, also can be different, and the guide way 61, the constant head tank 63 of first contact layer 2 and the guide way 61, the constant head tank 63 of second contact layer 3 can be the same, also can be different, the utility model provides a guide projection 62, the location arch 64 of first contact layer 2 and the guide projection 62, the location arch 64 of second contact layer 3 are identical, and the guide way 61, the constant head tank 63 of first contact layer 2 and the guide way 61, the constant head tank 63 of second contact layer 3 are identical.

Specifically, as shown in fig. 3, 5 and 10, four rectangular protruding ribs 611 are provided, and are preferably symmetrically and axially disposed on the side wall of the guide groove 61, and are disposed at four end corners of the rectangular guide groove 61, the four rectangular protruding ribs 611 in the drawing enable the guide groove 61 to form a cross-shaped guide groove 61, and a line-to-surface contact is formed by the rectangular protruding ribs 611 in the cross-shaped guide groove 61 and the guide protrusions 62, so as to generate an even axial friction force, and the line-to-surface contact structure reduces the contact area between each other, effectively reduces the requirement for interference between the boss and the hole, reduces the processing difficulty, and avoids the problem of high control cost of the friction force. Of course, the number of the rectangular protrusions 611 is not limited to four, and may be at least three, and the three rectangular protrusions 611 are uniformly spaced along the circumferential direction on the side wall of the guide groove 61, and can also achieve the linear-surface fit with the guide protrusion 62, and correspondingly, the protrusions are disposed on the side wall of the guide protrusion 62 to form the linear-surface fit with the guide groove 61. The guide groove 61 is a square hole, the guide projection 62 is a cylinder, and the shape of the guide groove 61 and the guide projection 62 can be triangle, ellipse, square, and the like, and the number of the guide groove 61 and the guide projection 62 in the figure is four, and the number of the guide groove 61 and the guide projection 62 can also be 1, 2, 3, 5, and the like.

In order to prevent the first contact layer 2 from being installed in a misaligned position, it is preferable to set the positioning groove 63 in an asymmetric structure, as shown in fig. 3, 5 and 10, the positioning groove 63 is disposed on one side of the central connecting line of the two mounting holes 5, and the positioning groove 63 is disposed on one side of the mounting holes 5 close to the shaft hole 4, one end of the positioning groove 63 is closed, and the other end of the positioning groove 63 is communicated with the mounting holes 5, so that the first contact layer 2 cannot be accurately installed between the second contact layer 3 and the first cover plate 1 when the first contact layer 2 is installed in a misaligned position, or in a reversed position. Of course, such a guide groove 61 for preventing installation in a misaligned state may also be provided on the second contact layer 3 simultaneously or separately, and only on the first contact layer 2 is shown in the figure.

Furthermore, the highest point of the guide projection 62 is lower than the highest point of the positioning projection 64, the inner diameter of the positioning groove 63 is smaller than the inner diameter of the mounting hole 5, the size of the positioning groove 63 is reduced, the size of the positioning projection 64 can be controlled, the space occupied by the guide groove and the positioning projection on the part is reduced, and waste materials generated during part production are reduced.

In order to make the structure of the combination switch complete and compact, a guide groove 61, a positioning groove 63, a guide projection 62 and a positioning projection 64 are arranged among the first cover plate 1, the first contact layer 2 and the second contact layer 3, the guide groove 61, the positioning groove 63 and the guide projection 62 and the positioning projection 64 which are respectively matched with the guide groove 61 and the positioning groove 63 can be arranged on the same side or can be arranged on two different sides or both sides, however, for the sake of simplified processing, it is preferable to provide a guide groove 61 and a positioning groove 63 on a side of the first cover plate 1 adjacent to the first contact layer 2, a guide protrusion 62 and a positioning protrusion 64 respectively provided on a side of the first contact layer 2 adjacent to the first cover plate 1, a guide groove 61 and a positioning groove 63 provided on a side of the first contact layer 2 adjacent to the second contact layer 3, and a guide protrusion 62 and a positioning protrusion 64 respectively provided on a side of the second contact layer 3 adjacent to the first contact layer 2. Obviously, the side of the first cover plate 1 adjacent to the first contact layer 2 may also be provided with a guide protrusion 62 and a positioning protrusion 64, and the side of the first contact layer 2 adjacent to the first cover plate 1 is provided with a guide groove 61 and a positioning groove 63 respectively; or, a guide protrusion 62 and a positioning groove 63 may also be disposed on one side of the first cover plate 1 adjacent to the first contact layer 2, and a guide groove 61 and a positioning protrusion 64, which are matched with the first contact layer 2, are disposed on one side of the first cover plate 1 adjacent to the first contact layer, respectively. Specifically, as shown in fig. 3, 5 and 10, the number of the guide grooves 61 is four, and the four guide grooves 61 are all disposed at the edges of the first cover plate 1 and the first contact layer 2, and the four guide grooves 61 surround to form a symmetrical structure, but an asymmetrical structure may also be formed, but the problem of uneven stress may be generated; as shown in fig. 2, 6, 7, 8, 9, 11 and 12, the guiding protrusions 62 are correspondingly disposed on the edges of the first contact layer 2 and the second contact layer 3, and the guiding protrusions 62 are in the form of a protruding cylinder.

Specifically, the first contact layer 2 and the second contact layer 3 both comprise a base and a contact system arranged on the base, the base structures of the sides of the first contact layer 2 and the second contact layer 3, on which the contact system is arranged, are the same, and two first arc-shaped bulges 71, two second arc-shaped bulges 72 and two sliding grooves 76 are arranged on the side of the base, on which the contact system is arranged; the first arc-shaped bulges 71 surround the periphery of the shaft hole 4 and surround to form a cam installation groove 73 with two identical openings 74, the arc-shaped bulges at the two sides of the openings 74 can extend to form a baffle structure for fixing the static contact piece 83, the middle part of each first arc-shaped bulge 71 is provided with an installation bulge 75, as shown in fig. 6-9, 11 and 12, the installation bulge 75 is in a butterfly shape, the installation hole 5 is arranged at the middle part of the installation bulge 75, of course, the positioning bulge 64 is also arranged on the installation bulge 75, and the two sides of the installation bulge 75 are respectively matched with the baffle structure formed by the first arc-shaped bulges 71 to fix the static contact piece 83; the second arc-shaped protrusions 72 are symmetrically arranged around the edge of the base, the middle part of each second arc-shaped protrusion 72 corresponds to one opening 74, and the guide protrusion 62 can be arranged on the second arc-shaped protrusions 72 to increase the height of the guide protrusion 62, so that the highest point of the guide protrusion 62 is higher than that of the positioning protrusion 64; the slide groove 76 extends into the cam mounting groove 73 through an opening 74, one end of the slide groove 76 is communicated with the shaft hole 4, and the other end is connected with the middle part of the second arc-shaped protrusion 72.

The contact system comprises two cams 81, a bracket 82, a stationary contact 83, a movable contact 84 and a spring 85; the bracket 82 is arranged in the opening 74, one end of the bracket 82 extends into the cam mounting groove 73, the other end of the bracket 82 is connected with the movable contact piece 84, and a spring 85 is arranged between the movable contact piece 84 and the second arc-shaped bulge 72; the static contact 83 is fixedly installed between the first arc-shaped protrusion 71 and the opening 74, each of the two cams 81 is provided with a notch portion, the two notch portions correspond to the two openings 74 respectively, the two cams 81 are sleeved on the rotating shaft and rotate along with the rotating shaft in the cam installation groove 73, the part of the non-notch portion or the notch portion of the cam 81 is matched with the bracket 82 in the rotating process, the bracket 82 is pushed to enable the dynamic contact 84 to be closed or disconnected with the static contact 83 under the action of the spring 85, the dynamic contact 84 is disconnected with the static contact 83 when the notch portion of the cam 81 is in contact with the bracket 82, and the dynamic contact 84 is closed with the static contact 83 under the pushing of the bracket 11 when the non-notch portion of the cam 81 is in contact with the. Preferably, the guide protrusion 62 and the positioning protrusion 64 are respectively arranged on the second arc-shaped protrusion 72 and the mounting protrusion 75, so that the highest points of the guide protrusion 62 and the positioning protrusion 64 are higher than the highest point of the static contact piece 83, effective guiding can be realized in the assembly process, and the need of adjusting parts such as the static contact piece 83 after assembly is avoided, so that the upper part and the lower part are aligned and assembled in place at one time.

The combined switch also comprises a rotating shaft, a bolt 9, a second cover plate 10, a base 11 and a partition plate 12, wherein the second cover plate 10, the base 11 and the partition plate 12 are correspondingly provided with a shaft hole 4 for installing the rotating shaft and an installation hole 5 for installing the bolt 9; one end of the rotating shaft penetrates through the partition plate 12, the base 11, the second cover plate 10, the second contact layer 3 and the first contact layer 2 in sequence and is rotatably supported on the first cover plate 1, and the other end of the rotating shaft is provided with a knob 13; the bolt 9 penetrates through the partition plate 12, the base 11, the second cover plate 10, the second contact layer 3, the first contact layer 2 and the first cover plate 1 in sequence to fix the two into a whole.

The embodiment of the utility model provides an in the structure of the dislocation installation of preventing the contact layer through the cooperation between constant head tank 63, the protruding 64 in location also can be used for the cooperation between second apron and a plurality of contact layer, only need set up the structure of constant head tank 63, the protruding 64 in location between the contact layer of second apron 10 and next-door neighbour second apron 10, of course also can set up limit structure between first apron 1, a plurality of contact layers and second apron 10 simultaneously.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. The utility model provides a combination switch, is including the first apron (1) that sets gradually and the contact layer of a plurality of range upon range of settings, first apron (1) all is equipped with shaft hole (4) that are used for installing the pivot and is equipped with mounting hole (5), its characterized in that at the bilateral symmetry in shaft hole (4) with the middle part of every contact layer: all be equipped with between the contact layer of first apron (1) and next-door neighbour first apron (1) and between two adjacent contact layers and be used for installing spacing limit structure, limit structure includes guide way (61), constant head tank (63), direction arch (62) and location arch (64), guide way (61) and the protruding (62) cooperation of direction form the line face contact, and constant head tank (63) and the protruding (64) cooperation of location are used for preventing that the contact layer from taking place the dislocation when the installation.

2. The combination switch of claim 1, wherein: at least three right-angled ribs (611) which are in line-surface contact with the guide protrusions (62) are arranged in the guide groove (61), the right-angled ribs (611) are axially arranged in the guide groove (61), and the right-angled ribs (611) are circumferentially and uniformly arranged on the side wall of the guide groove (61) at intervals.

3. A combination switch according to claim 1 or 2, wherein: each contact layer comprises a contact system and a base for mounting the contact system; the contact system is arranged on one side, facing the first cover plate (1), of the base, and two first arc-shaped bulges (71), two second arc-shaped bulges (72) and two sliding grooves (76) are arranged on one side, provided with the contact system, of the base; the first arc-shaped bulges (71) surround the periphery of the shaft hole (4) and surround to form a cam installation groove (73) with two identical openings (74), the middle part of each first arc-shaped bulge (71) is provided with an installation bulge (75), and the installation bulge (75) is provided with an installation hole (5); the second arc-shaped bulges (72) are symmetrically arranged at the edge of the base in a surrounding way, and the middle part of each second arc-shaped bulge (72) corresponds to one opening (74); the sliding groove (76) extends into the cam mounting groove (73) through an opening (74), one end of the sliding groove (76) is communicated with the shaft hole (4), and the other end of the sliding groove is connected with the middle part of the second arc-shaped bulge (72);

the contact system comprises two cams (81), a bracket (82), a static contact piece (83), a movable contact piece (84) and a spring (85); the bracket (82) is arranged in the opening (74), one end of the bracket (82) extends into the cam mounting groove (73), the other end of the bracket is connected with the movable contact piece (84), and a spring (85) is arranged between the movable contact piece (84) and the second arc-shaped bulge (72); static contact (83) fixed mounting is in between first arc arch (71) and uncovered (74), two cams (81) all are equipped with two uncovered (74) of two breach portions of a breach portion and two cams (81) respectively, two cams (81) cover are located in the pivot and are rotated along with the pivot in cam mounting groove (73), cam (81) are in the part or the breach portion and the support (82) cooperation of rotation in-process non-breach portion, promote support (82) make dynamic contact (84) close or break off with static contact (83) under the effect of spring (85).

4. A combination switch according to claim 3, wherein: the guide bulge (62) is arranged on the second arc-shaped bulge (72) in a protruding mode, the positioning bulge (64) is arranged on the mounting bulge (75) in a protruding mode, and the highest points of the guide bulge (62) and the positioning bulge (64) are higher than the highest point of the static contact piece (83).

5. A combination switch according to claim 1 or 2, wherein: the device is characterized by also comprising a rotating shaft, a bolt (9), a second cover plate (10), a base (11) and a partition plate (12), wherein the second cover plate (10), the base (11) and the partition plate (12) are correspondingly provided with a shaft hole (4) for installing the rotating shaft and an installation hole (5) for installing the bolt (9); one end of the rotating shaft penetrates through the partition plate (12), the base (11), the second cover plate (10) and the plurality of contact layers in sequence and is rotatably supported on the first cover plate (1), and the other end of the rotating shaft is provided with a knob (13); the bolt (9) penetrates through the partition plate (12), the base (11), the second cover plate (10), the contact layers and the first cover plate (1) in sequence to fix the contact layers into a whole.

6. A combination switch according to claim 1 or 2, wherein: the positioning groove (63) is arranged on one side of a central connecting line deviating from the two mounting holes (5).

7. A combination switch according to claim 1 or 2, wherein: the locating groove (63) is arranged on one side, close to the shaft hole (4), of the mounting hole (5), one end of the locating groove (63) is sealed, and the other end of the locating groove (63) is communicated with the mounting hole (5).

8. A combination switch according to claim 1 or 2, wherein: the inner diameter of the positioning groove (63) is smaller than that of the mounting hole (5); the highest point of the guide projection (62) is lower than the highest point of the positioning projection (64).

9. A combination switch according to claim 1 or 2, wherein: one side of first apron (1) next-door neighbour contact layer is equipped with guide way (61) and constant head tank (63), and one side of contact layer towards first apron (1) is equipped with direction arch (62) and location arch (64), and one side of contact layer dorsad first apron (1) is equipped with guide way (61) and constant head tank (63).

10. A combination switch according to claim 1 or 2, wherein: the guide grooves (61) are arranged on the edges of the first cover plate (1) and the contact layer; the guide protrusions (62) are correspondingly arranged on the edges of the contact layer.

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