CN217114191U

CN217114191U - Knife switch with reinforced connection effect

Info

Publication number: CN217114191U
Application number: CN202220103437.8U
Authority: CN
Inventors: 黄文平
Original assignee: Zhejiang Chint Electrical Electric Co ltd
Current assignee: Zhejiang Chint Electrical Electric Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-08-02
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a knife switch for enhancing the connection effect, which comprises a first static contact, a spring retainer ring and two positioning plates, wherein the first static contact is provided with two first static contact pieces which are symmetrically arranged, the two positioning plates are connected with the corresponding first static contact pieces, the positioning plates are provided with a plurality of grooves, and the two ends of the spring retainer ring are respectively abutted against the grooves; the utility model discloses static contact excellent in connection effect, long service life, arc-extinguishing chamber simple to operate, fixed firm.

Description

Knife switch with reinforced connection effect

Technical Field

The utility model relates to a strengthen connection effect's switch.

Background

The knife switch is used for achieving the effect of switching on and off a circuit, one end of the blade is hinged to one fixed contact, the other fixed contact is located on the rotating track of the blade, and the blade is communicated with the two fixed contacts or is disconnected with the two fixed contacts through the rotating handle.

The existing structure is abutted against two side walls of the static contact through the spring retainer ring to form the clamping effect of the static contact, so that the clamping effect of the static contact is better. However, the structure has the problem that the side wall of the static contact is smoothly arranged, so when the spring retainer ring is abutted against the side wall of the static contact, slipping and shifting are easy to occur, and the clamping effect of the whole static contact is seriously influenced. The technical personnel in the field improve the static contact, and the punching press forms the recess on the static contact, then makes the spring rand offset with the recess to realize the fixed effect of spring rand, but this kind of structure can lead to area of contact to reduce, seriously influences actual result of use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a strengthen connection effect's knife switch.

The utility model discloses the technical scheme who solves its technical problem and adopt is: the utility model provides a strengthen disconnecting link switch of connection effect, wherein, includes first static contact, spring rand and two locating plates, is equipped with the first static contact that two symmetries set up on the first static contact, and two locating plates are connected with the first static contact that corresponds, are equipped with a plurality of recess on the locating plate, and the both ends of spring rand offset with the recess respectively.

The setting of adoption locating plate reduces the processing degree of difficulty of first static contact to reduction in production cost, simultaneously, through locating plate and the cooperation of spring rand both ends, realize the fixed effect of centre gripping of first static contact, make the laminating between first static contact and the blade more inseparable. Meanwhile, the positioning plate is arranged, so that the strength of the first static contact piece is increased, and the overall clamping force is improved.

Wherein, be equipped with the draw-in groove on the first static contact, be equipped with on the locating plate with draw-in groove complex location stabilizer blade, location stabilizer blade and draw-in groove cooperation.

The setting of draw-in groove for fixed effect is connected with the better realization of first static contact to the locating plate.

Wherein, the locating plate is provided with a plurality of bulge parts, and the groove is positioned between two adjacent bulge parts.

The setting of uplift improves the holistic intensity of locating plate, and the setting of recess, then the fixed effect of connection of better realization spring rand.

Wherein, be equipped with first plane on two first static contact opposite faces.

By means of the arrangement of the first plane, compared with a linear connection mode in the prior art, the contact area between the blade and the first fixed contact is larger, and an electrical connection effect is better achieved.

The first static contact is fixed on the base, two sliding rails are arranged on the base and are respectively arranged on two sides of the first static contact, at least one elastic bulge is arranged on the side wall of each sliding rail, a plurality of arc extinguishing sheets are arranged on the arc extinguishing cover, a sliding rail matched with each sliding rail is arranged at the lower end of the arc extinguishing cover, and the elastic bulges are abutted to the inner wall of each sliding rail.

Adopt this kind of structure setting, at the fixed in-process of installation, the arc-extinguishing chamber passes through slide and slide rail cooperation to realize the slidingtype cooperation, make the arc-extinguishing chamber installation more convenient, simultaneously, through the bellied setting of elasticity, make to form certain frictional resistance between slide and the slide rail, prevent to take place to drop.

The elastic bulge is of an arch structure, a second plane is arranged on the elastic bulge, and the second plane abuts against the inner wall of the slide way.

Adopt the setting of second plane for form the effect of the counterbalance complex of face and face between elastic bulge and the slide, increase area of contact between the two, thereby improve holistic connection stability.

Wherein, the slide is 7 style of calligraphy settings, is equipped with the mount pad on the base, and the slide rail is located the top of mount pad.

The slideway is arranged in such a structure, so that a limiting effect in one direction is formed between the slideway and the mounting seat, and the limitation in the vertical direction is preferred.

Wherein, be equipped with the fixed slot in the slide, be equipped with the fixed part with the fixed slot adaptation on the mount pad.

The fixed part is with the cooperation of fixed slot for the fixed intensity of being connected between slide and the slide rail is higher, and fixed effect is connected in better realization.

Wherein, the fixed slot is internally provided with a limiting block.

The setting of stopper has formed an interference fit's effect, further improves the fixed effect of cooperation between slide and the slide rail, prevents to take place to drop.

Wherein, be equipped with connecting portion and two curb plates on the mount pad, two curb plates are connected to connecting portion, and the slide rail is located the top of curb plate, and connecting portion are located the below of first static contact.

The mounting base is arranged by adopting the structure, and in the using process, the connecting and fixing effect of the connecting part and the lower end of the first static contact is formed by the bolts, so that the matching effect between the mounting base and the first static contact is realized, and the connecting part can be matched and connected with the first static contact in other fixing modes.

Drawings

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

fig. 2 is a sectional view of embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of the first fixed contact, the spring retainer ring, and the positioning plate in embodiment 1 of the present invention;

figure 4 is a schematic structural view of the arc-extinguishing chamber and the mounting seat in embodiment 1 of the present invention;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a cross-sectional view at another angle from FIG. 4;

figure 7 is a schematic structural view of an arc extinguishing chamber in embodiment 1 of the present invention;

figure 8 is a cross-sectional view of an arc chute in embodiment 1 of the present invention;

fig. 9 is a schematic structural view of a mounting seat in embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1-9, a knife switch for enhancing connection effect includes a first stationary contact 1, a second stationary contact 2, a handle 3, a shaft 4, a base 5, and an arc extinguishing chamber 6.

The knife switch can be two-phase electricity or three-phase electricity, and in a simple way, the switching-on and switching-off effect can be realized by matching two groups of static contacts with the blade 9, the switching-on and switching-off effect can also be realized by matching three groups of static contacts with the blade 9, and the switching-on and switching-off effect can also be realized by matching four groups of static contacts with the blade 9. In this embodiment, only three sets of static contacts are matched with the blade 9 for example, and since the structures of each set of static contacts are consistent, only one set of static contacts is described. For example, in the present embodiment, a first stationary contact 1, a second stationary contact 2 and a blade 9 cooperate to form a phase circuit.

The first fixed contact 1 is located on the rotation track of the blade 9, that is, the handle 3 rotates the blade 9, so that the blade 9 is communicated with the first fixed contact 1 and the second fixed contact 2, and the switching-on effect is realized.

The first static contact 1 comprises two first static contacts 11 and a first base plate 12, the two first static contacts 11 are symmetrically arranged, a first clamping groove 13 is formed between the two first static contacts 11, and the width of the first clamping groove 13 is smaller than that of the blade 9, so that the blade 9 extends into the first clamping groove 13. In order to increase the contact area between the two first static contact pieces 11 and the blade 9 during the engagement, a first plane 111 is provided on the opposite surface of the two first static contact pieces 11. That is, a first plane 111 is provided on a side surface of one of the first static contacts 11 facing the other first static contact 11, in this embodiment, the length of the first plane 111 is that the front end of the first static contact 11 extends to the rear end of the first static contact 11, and the extending direction here may be horizontal extension or inclined extension, and those skilled in the art may modify according to actual needs. The width of first plane 111 also can be selected according to actual demand, if the width is too big, makes the frictional resistance increase of blade 9 and first static contact 11 very easily, leads to in the in-service use process, and divide closing operation is comparatively difficult, so field technical personnel can carry out size adjustment. By adopting the arrangement of the first plane 111, compared with a linear connection mode adopted in the prior art, the contact area between the blade 9 and the first static contact 1 is larger, and the electrical connection effect is better realized.

The first base plate 12 connects the bottom ends of the two first stationary contacts 11, thereby achieving an electrical connection effect. The first base plate 12 is further provided with a first terminal connected to an external wire, thereby achieving an external electrical connection effect. In this embodiment, the first bottom plate 12 and the base 5 are connected and fixed by bolts or positioning posts.

Further, still install spring rand 7 and locating plate 8 on the first static contact 1, the quantity of spring rand 7 is two, and two spring rands 7 are located the front end and the rear end of first static contact 1 respectively, and two spring rands 7 are unanimous in structure, all pass two first static contact 11, and then the both ends of spring rand 7 offset with first static contact 11 lateral wall to realize the tight fixed effect of clamp of first centre gripping groove 13.

The quantity of locating plate 8 is two, and two locating plates 8 correspond a first static contact 11 respectively, are equipped with draw-in groove 14 on the lateral wall both ends of first static contact 11. The locating plate 8 is a flat structure, be equipped with respectively on the both ends of locating plate 8 with draw-in groove 14 complex location stabilizer blade 81, be equipped with a plurality of uplift portion 82 on the intermediate position of locating plate 8, two adjacent uplift portions 82 have formed recess 83, in this embodiment, preferred scheme forms three recess 83, the recess 83 that is located both ends around the position offsets with spring rand 7 respectively, thereby realize the fixed effect of being connected between locating plate 8 and the first static contact 11, improve the holistic intensity of first static contact 11.

The second static contact 2 is used for being hinged with the blade 9 to form a rotary connection effect with the blade 9. In this embodiment, the second static contact 2 includes two second static contacts 21, the annular protrusion 22 is disposed on the opposite surface of the two second static contacts 21, the third plane 221 is disposed on the annular protrusion 22, and the third plane 221 is connected and abutted to the blade 9.

The handle 3 penetrates through the base 5 and extends out of the base 5, and the handle 3 is matched with the rotating shaft 4 to achieve the rotating effect of the rotating shaft 4.

The cover is equipped with a plurality of connecting piece 41 on the pivot 4, and connecting piece 41 is the linkage setting with pivot 4, and connecting piece 41 one end is connected fixedly with blade 9 to realize that handle 3 drives the motion of pivot 4, realize that handle 3 drives blade 9 pivoted effect. In the prior art, a bolt penetrates through the blade 9 and the connecting piece 41, and the other end of the bolt is connected and fixed through a nut, so that the fixing effect of the blade 9 and the connecting piece 41 is realized. In this embodiment, a counter bore 42 is formed in the connecting member 41, a screw hole matched with a bolt is formed in the blade 9, the bolt penetrates through the connecting member 41 and is connected and fixed with the screw hole, and the head of the fixed bolt is located in the counter bore 42, so that the volume of the whole bolt after being fixed is reduced, and the overall attractiveness is improved. Here, the connecting element 41 is located between the first stationary contact 1 and the second stationary contact 2, and the connecting element 41 is located on a side close to the second stationary contact 2. Further, in order to improve the heat dissipation effect of the blade 9, a plurality of heat dissipation holes 92 are formed in the blade 9 in this embodiment.

The base 5 is used for fixing the first fixed contact 1, the second fixed contact 2 and the arc extinguishing cover 6.

The base 5 is provided with an installation base 51, in this embodiment, one first fixed contact 1 corresponds to one installation base 51, the installation base 51 is provided with a connecting portion 511 and two side plates 512, the connecting portion 511 connects the lower ends of the two side plates 512, so as to form a U-shaped structure integrally, the connecting portion 511 is located below the first bottom plate 12, and the bolt or the positioning column passes through the first bottom plate 12 and the connecting portion 511 to be connected and fixed.

The two side plates 512 are symmetrically arranged, and the two side plates 512 have the same structure, so that only one side plate 512 is described. The top end of the side plate 512 is provided with a slide rail 52, one end of the slide rail 52 is provided with a fixing portion 521 matched with the fixing groove 62, the side wall of the slide rail 52 is provided with at least one elastic protrusion 53, in the embodiment, the number of the elastic protrusions 53 is preferably three, and the elastic protrusions 53 extend outwards horizontally, so that the elastic protrusions 53 and the side plate 512 form a 7-shaped structure. In this embodiment, the elastic protrusion 53 is preferably an arch, and a second plane 531 is disposed on the elastic protrusion 53, and the second plane 531 abuts against the inner wall of the slide way. By adopting the second plane 531, the elastic bulge 53 and the slideway form a surface-to-surface abutting fit effect, so that the contact area between the elastic bulge and the slideway is increased, and the overall connection stability is improved.

The number of the arc-extinguishing covers 6 is also three, each arc-extinguishing cover 6 corresponds to one first fixed contact 1, and when the blade 9 rotates, the arc generated by connection or separation with the first fixed contact 1 is extinguished through the arc-extinguishing cover 6. In the present embodiment, the structures of the arc-extinguishing chambers 6 are identical, so that only one of the arc-extinguishing chambers 6 is described here.

The arc-extinguishing chamber 6 is provided with a plurality of arc-extinguishing pieces 63, wherein the arc-extinguishing pieces 63 are positioned on the movement track of the blade 9. The structure of the arc extinguishing plates 63 is prior art and therefore will not be described in the present embodiment.

Be equipped with on the lower extreme of arc-extinguishing chamber 6 with slide rail 52 complex slide 61, the cross-section of slide 61 is 7 style of calligraphy settings, and the size of slide 61 top is greater than the size of below promptly, after slide rail 52 and slide 61 cooperation, can form the ascending joint effect of a vertical direction, guarantees that slide rail 52 can not drop from the vertical direction.

Inside innermost of slide 61 is equipped with fixed slot 62, is equipped with stopper 621 in the fixed slot 62, and after fixed part 521 stretched into fixed slot 62, fixed part 521 and stopper 621 can form an interference fit's effect, further improve the fixed effect of cooperation between slide 61 and the slide rail 52, prevent to take place to drop.

Besides, it should be noted that, in the present embodiment, the sliding fit between the arc-extinguishing chamber 6 and the mounting seat 51 is horizontal sliding, and those skilled in the art may modify horizontal sliding into sliding in the vertical direction on the basis of the present embodiment, that is, the sliding rail 52 is arranged on the vertical base 5, and the arc-extinguishing chamber 6 is installed in a sliding manner from the top to the bottom, so as to achieve the effect of connecting and fixing the arc-extinguishing chamber 6 and the mounting seat 51. Adopt this kind of structure setting, at the fixed in-process of installation, arc-extinguishing chamber 6 passes through slide 61 and slide rail 52 cooperation to realize slidingtype cooperation, make arc-extinguishing chamber 6 install more convenient, simultaneously, through elastic bulge 53's setting, make to form certain frictional resistance between slide 61 and the slide rail 52, prevent to take place to drop.

Adopt the setting of locating plate 8, reduce the processing degree of difficulty of first static contact 11 to reduction in production cost, simultaneously, through locating plate 8 and the cooperation of spring rand 7 both ends, realize the fixed effect of centre gripping of first static contact 11, make the laminating between first static contact 11 and the blade 9 more inseparable. Meanwhile, the positioning plate 8 is arranged, so that the strength of the first static contact piece 11 is increased, and the overall clamping force is improved.

Claims

1. The utility model provides a strengthen disconnecting link switch of connection effect which characterized in that: the first static contact is provided with two first static contacts which are symmetrically arranged, the two positioning plates are connected with the corresponding first static contacts, the positioning plates are provided with a plurality of grooves, and two ends of the spring retainer ring respectively abut against the grooves.

2. The knife switch with the enhanced connection effect as claimed in claim 1, wherein: the first static contact is provided with a clamping groove, the positioning plate is provided with a positioning supporting leg matched with the clamping groove, and the positioning supporting leg is matched with the clamping groove.

3. The knife switch with the enhanced connection effect as claimed in claim 1, wherein: the positioning plate is provided with a plurality of protruding parts, and the groove is positioned between two adjacent protruding parts.

4. The knife switch with the enhanced connection effect as claimed in claim 1, wherein: the opposite surfaces of the two first static contact pieces are provided with first planes.

5. The knife switch with the enhanced connection effect as claimed in claim 1, wherein: the fixed contact is fixed on the base, the base is provided with two sliding rails, the two sliding rails are respectively arranged on two sides of the first fixed contact, the side wall of each sliding rail is provided with at least one elastic bulge, the arc-extinguishing cover is provided with a plurality of arc-extinguishing pieces, the lower end of the arc-extinguishing cover is provided with a slide way matched with the sliding rails, and the elastic bulges are abutted to the inner wall of the slide way.

6. The knife switch with the enhanced connection effect as claimed in claim 5, wherein: the elastic bulge is of an arch structure, a second plane is arranged on the elastic bulge, and the second plane is abutted to the inner wall of the slide way.

7. The knife switch with the enhanced connection effect as claimed in claim 5, wherein: the slide is 7 style of calligraphy settings, is equipped with the mount pad on the base, and the slide rail is located the top of mount pad.

8. The knife switch with the enhanced connecting effect as claimed in claim 7, wherein: be equipped with the fixed slot in the slide, be equipped with the fixed part with the fixed slot adaptation on the mount pad.

9. The knife switch with the enhanced connecting effect as claimed in claim 8, wherein: a limiting block is arranged in the fixing groove.

10. The knife switch with the enhanced connecting effect as claimed in claim 8, wherein: be equipped with connecting portion and two curb plates on the mount pad, two curb plates are connected to connecting portion, and the slide rail is located the top of curb plate, and connecting portion are located the below of first static contact.