CN2929931Y

CN2929931Y - Electric coupler

Info

Publication number: CN2929931Y
Application number: CN 200620120698
Authority: CN
Inventors: 朱纪忠
Original assignee: NINGBO GOODFRIENDS APPLIANCE CO Ltd
Current assignee: NINGBO GOODFRIENDS APPLIANCE CO Ltd
Priority date: 2006-06-27
Filing date: 2006-06-27
Publication date: 2007-08-01
Anticipated expiration: 2016-06-27

Abstract

The utility model discloses an electron-coupler comprising a ball-shaped upper connection and a ball-shaped lower connection, wherein the lower connection includes an insulation bottom board provided with a central insulation column with a cavity and a ring-shaped insulation wall, the end face of the central insulation column is arranged with a center hole. A first, a second and a third receiving terminals of the lower connection are provided in the cavity of the central insulation column. The first receiving terminal is provided at the lower portion of the cavity, the wall of the central insulation column is provided with a notch corresponding to the position of at least one end of the receiving terminal, and a sliding coupling structure is arranged in the cavity of the central insulation column. The utility model has the advantages of simple structure, operational reliability enhancement and high security, and can satisfy the requests of all kinds of electrical equipments to electric connecting piece.

Description

Electric coupling

Technical field

The utility model relates to a kind of electric coupling, relates in particular to a kind of rotary electric coupler.

Background technology

At present, the rotary coupler that is used for household electrical appliance such as electric kettle can be divided into two kinds usually: 1, be each utmost point conductor of donut formation in the square joint, the opposing party's joint has and has certain flexible contact accordingly, form between the end face of contact and annulus and be connected, the shortcoming of this kind coupled modes is: owing to have rotating function between the coupling, and annulus can not be made very thickly, after work a period of time, easily cause the contact surface abrasion of contact and annulus, may cause at last and can't work.2, each utmost point conductor that constitutes for donut in the square joint, the contact of the opposing party's joint is connected with the sidewall of corresponding annulus, form two joints mutual socket of shell mechanism, rotation when coupling, be electrically connected then is that the contact offsets with the donut sidewall and contacts conducting, sliding contact conducting when the coupler joint rotates relatively, the wearing and tearing shortcoming that a kind of mode is caused easily before having overcome like this though wearing and tearing are arranged during slip, can not impact connection usually.

Because security needs, the coupling of contact-carrying part links to each other with power supply as the part of electrical equipment base usually; And the terminal of band donut is inserted in the electrical equipment owing to need three electric connection terminals, must at least two donut add and just can meet the demands the terminals in the center of circle.This just requires the terminals of the contact-carrying that is mated to have corresponding configuration, generally the coupler profile can be very not big, therefore be difficult to the coupler blank area of contact-carrying is designed to both satisfy between the joint rotate, the requirement of fit, satisfy again simultaneously the contact terminals in energising but when not being coupled work with extraneous complete closed, it is this that to be enclosed in some in particular cases be effective, when for example conducting liquid is sprayed onto the contact terminals, if human body touch herein then easily cause electric shock accidents, influence security of products, the increase creepage distance of being taked at present, adjust structure and quicken fluid drainage, methods such as increase insulation isolation are solved, but can not obtain gratifying effect.

Summary of the invention

The technical problems to be solved in the utility model is to overcome deficiency of the prior art, a kind of requirement of both having satisfied rotation, fit between the terminal is provided, satisfy simultaneously contact terminal again in energising but when not being coupled work and extraneous complete closed, safe electric coupling.

The utility model provides a kind of electric coupling, comprise top connection and lower contact, on described, lower contact is cylindrical, described lower contact comprises insulating base, on described insulating base, be provided with the central insulation post and the annular insulation wall of band cavity, be provided with certain clearance between described central insulation post and annular insulation wall, on the end face of described central insulation post, be provided with a centre bore, in the cavity of described central insulation post, be provided with first of lower contact, the second and the 3rd terminals, described first terminals are arranged on the bottom of described cavity, position corresponding at least one terminals termination on the wall of the limit of described central insulation post offers otch, described second or/and the 3rd terminals can be under the effect of external force, from described otch, stretch out, in the cavity of described central insulation post, be provided with a slip coupling mechanism.

Wherein, described slip coupling mechanism comprises a slide block, described slide block be arranged on described centre bore the below and can be along on the guide rail of vertical setting, under slide, the upper end of described slide block is provided with transition electric conductor sheet, the first terminals vertical direction contraposition of the external part of this transition electric conductor sheet and described lower contact, be connected with a back-moving spring in the lower end of described slide block, the other end of described back-moving spring is fixedlyed connected with described insulating base, described slide block contacts with described second terminals, and the contact-making surface of this slide block is from top to bottom gradually near the inclined-plane of lower contact centerline direction.

As a kind of improvement of the present utility model, the contact portion of the 3rd terminals of described lower contact is stretched out the cavity of described central insulation post.

As another kind of improvement the of the present utility model, on the base plate of described lower contact and be positioned at the clearance space that described central insulation post and annular insulation wall form and offer the leaking hole that connects described lower contact bottom, make the water that flows into lower contact can not pass through terminals.

Described top connection is a concentric circle assembly, described concentric circles assembly comprises outer shroud insulated ring and interior ring insulated ring, be arranged at first binding post at center, and second terminals and the 3rd terminals that encircle the insulated ring both sides in being arranged at, when coupling, described interior ring insulated ring can plug together in the clearance space of the central insulation post of described lower contact and the formation of annular insulation wall, and described first binding post can insert in the centre bore of described lower contact.

As another kind of improvement the of the present utility model, described first binding post is the binding post of non-ground connection.

In addition, the utility model also provides a kind of insulating pot that includes above-mentioned electric coupling.

Owing to adopt above-mentioned technical scheme, the utlity model has following beneficial effect:

1. simple in structure, functional reliability is strengthened.

2. the terminals of one of them non-ground connection adopt indirect contact, only just switch on when slide block is fully depressed, and improve Product Safety.

3. owing to integrated the interior terminals of lower contact, make it in cavity, the water of immersion can directly not touch charged terminals, has improved product waterproof ability in actual use, improves Product Safety.

Description of drawings

Fig. 1 is the top connection stereogram of the utility model electric coupling;

Fig. 2 is the lower contact stereogram of the utility model electric coupling;

Fig. 3 is the stereogram on another direction of lower contact of the utility model electric coupling;

Fig. 4 is the upper and lower joint coupling back stereogram of the utility model electric coupling;

Fig. 5 is the top connection coupling front cross sectional view of the utility model electric coupling;

Fig. 6 is the lower contact coupling front cross sectional view of the utility model electric coupling;

Fig. 7 is the cutaway view on another direction before the utility model electric coupling lower contact coupling;

Fig. 8 is the upper and lower joint coupling back cutaway view of the utility model electric coupling;

Fig. 9 is another direction cutaway view of upper and lower joint coupling back of the utility model electric coupling.

Embodiment

Below in conjunction with accompanying drawing embodiment is illustrated.

As shown in Figure 1, stereogram for the top connection 1 of the utility model electric coupling, wherein top connection 1 is a concentric circle assembly, this concentric circles assembly comprises outer shroud insulated ring 10 and interior ring insulated ring 11, be arranged at first binding post 12 at center, and second terminals 13 and the 3rd terminals 14 that encircle insulated ring 11 inboards in being arranged at, and at interval certain electrical safety distance; The first binding post lead-out tablet 121, the second terminals lead-out tablet 131, the 3rd terminals lead-out tablet 141 and the screw of fixing three binding posts.First binding post 12 of top connection 1 can be the binding post of non-ground connection.

As shown in Figures 2 and 3, be the stereogram on 2 two different directions of lower contact of the utility model electric coupling, lower contact 2 comprises an insulating base 21, on insulating base 21, be provided with the insulator assembly that engages with the concentric circle assembly of top connection 1, the insulator assembly comprises that one has the central insulation post 22 and an annular insulation wall 23 of cavity, 23 of central insulation post 22 and annular insulation walls have the certain interval space, this clearance space is communicated with the hollow space of central insulation post 23, and formation can be held first binding post 12 of top connection, the cavity of second terminals 13 and the 3rd terminals 14 is provided with a slide block coupling mechanism in the cavity of lower contact 2.This slide block coupling mechanism is made up of slide block 24, two back-moving springs 25 and the transition electric conductor sheet 26 that is fixed on the slide block.There is an inclined-plane 32 side of slide block 24, and the direction on this inclined-plane 32 is from top to bottom gradually near the lower contact centerline direction.Can slide up and down under the effect of slide block 24 spacing and back-moving spring 25 of guide rail 27 in cavity, thereby transition electric conductor sheet 26 can touch first terminals 28 that are located at cavity bottom.Second terminals 30 and the 3rd terminals 31 that are installed in the described cavity have otch 29 on the sidewall of cavity, so that can stretch out from described otch.Insulating base 21 is connected with the insulator assembly by two screws.On the base plate of lower contact 2 and be positioned at the clearance space that central insulation post 22 and annular insulation wall 23 form and offer the leaking hole 33 that connects lower contact 2 bottoms, make the water that flows into lower contact can pass through terminals, the fail safe when guaranteeing the electric coupling use.

As shown in Figure 4, be the top connection 1 of the utility model electric coupling and the stereogram after lower contact 2 couplings.Top connection 1 and lower contact 2 mutual fits, first binding post 12 of top connection 1 is pressed onto the bottom with the slide block 24 of lower contact 2, the transition electric conductor sheet 26 of first binding post, the 12 contact lower contacts 2 of top connection 1, the transition electric conductor sheet 26 of lower contact 2 contacts with first terminals 28 of lower contact 2 again, the inclined-plane 32 of the slide block 24 that second terminals 30 in the lower contact 2 are depressed ejects from the otch 29 of cavity, contact with second terminals 13 of top connection 1, the 3rd terminals 31 of lower contact 2 contact with the 3rd terminals of top connection 1.Because first terminals (post) of upper and lower joint contacts is at end face, second contact at periphery with the 3rd terminals, is the maximum contact face, improves the reliability that is coupled.

As Fig. 5, Fig. 6 and shown in Figure 7, be the cutaway view before the upper and lower joint coupling of the utility model electric coupling, the annular insulation wall 23 of the outer shroud of top connection 1, interior ring insulated

ring

10,11 and lower contact 2 is fit mutually, and first binding post 12 of top connection 1 and the central insulation post 22 upper surface centre bores of lower contact 2 are fit mutually; First binding post 12 of top connection 1 is with after the transition electric conductor sheet 26 of lower contact 2 contacts, and contacts at upper surface with first terminals 28 of lower contact 2 again, keeps certain elastic pressure each other, and can relatively rotate.The second interior terminals 30 of cavity that are installed in lower contact 2 contract in the cavity the inside, and satisfy certain secured electrical distance, because there is an angle of 90 degrees degree in the otch 29 of cavity with the coupling direction, can not touch charged terminals when having avoided user's mistake that metalwork is inserted.The transition electric conductor sheet 26 of lower contact 2 gets lodged in the central insulation post 22 upper surface central hole of lower contact 2, transition this moment electric conductor sheet 26 is not charged, and, can not touch charged terminals when having avoided user's mistake that metalwork is inserted charged first terminals isolation.

As Fig. 8 and shown in Figure 9, on the utility model electric coupling, cutaway view after the lower contact coupling is finished, slide block 24 is depressed, the joint contact of each the corresponding terminals in each terminals (post) of top connection 1 and the lower contact connects, slide block 24 is backed down back back-moving spring 25 pressurizeds and is held power, be in tensioned state, thereby after leaving, top connection 1 can return to the state before the coupling, two joint contacts 30 of

lower contact

2,31 owing to the side loaded strain produces certain pressure, thereby satisfy the requirement of electric contact pressure, simultaneously again because the tip side 30 of lower contact, 31 with the two poles of the earth terminals 13 of top connection 1, the 14th, in the circumferencial direction contact, so can realize, 360 degree rotations of lower contact.

Concrete dynamic duty process is as follows: when top connection 1 enters lower contact 2, annular insulation wall 23 outsides elder generation fit of the inboard insulator assembly with lower contact 2 of the outer shroud insulated ring 10 of top connection 1 at first, what can guarantee to be coupled carries out smoothly, center first binding post 12 of top connection 1 simultaneously inserts from the centre bore on central insulation post 22 upper surfaces of lower contact, press down slide block 24, touch the transition electric conductor sheet 26 that is installed on the slide block 24 simultaneously, slide block 24 moves downwards along guide rail in the cavity 27, back-moving spring 25 pressurizeds held power after slide block 24 was depressed, and were in tensioned state.Be installed in transition electric conductor sheet 26 on the slide block 24 along with slide block 24 moves, move to the back, bottom and contact with first terminals of lower contact 2.Simultaneously in the process that slide block moves down, because the inclined-plane 32 on slide block 24 sides produces a power that deviates from center position, second terminals 30 of lower contact 2 otch 29 from cavity is ejected, contact with second terminals 13 of top connection 1, second terminals, 30 pressurizeds of lower contact 2 hold power.And lower contact 2 the 3rd terminals 31 also contact with the 3rd terminals 14 of top connection 1, thereby finish the coupling action.Each contact point of upper and lower joint separates successively when coupler separates, because the effect of back-moving spring 25, slide block 24 is moved upward along guide rail 27, and pressurized holds second terminals 30 of power after slide block is removed, be returned to initial position, thereby finish whole duty cycle.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.

Claims

1, a kind of electric coupling, comprise top connection and lower contact, on described, lower contact is a circle shape, described lower contact comprises insulating base, on described insulating base, be provided with the central insulation post and the annular insulation wall of band cavity, be provided with certain clearance between described central insulation post and annular insulation wall, on the end face of described central insulation post, be provided with a centre bore, in the cavity of described central insulation post, be provided with first of lower contact, the second and the 3rd terminals, described first terminals are arranged on the bottom of described cavity, it is characterized in that: the position corresponding at least one terminals termination on the wall of the limit of described central insulation post offers otch, is provided with a slip coupling mechanism in the cavity of described central insulation post.

2, electric coupling according to claim 1, it is characterized in that: described slip coupling mechanism comprises a slide block, described slide block be arranged on described centre bore the below and can be along on the guide rail of vertical setting, under slide, the upper end of described slide block is provided with transition electric conductor sheet, the first terminals vertical direction contraposition of the external part of this transition electric conductor sheet and described lower contact, be connected with a back-moving spring in the lower end of described slide block, the other end of described back-moving spring is fixedlyed connected with described insulating base, described slide block contacts with described second terminals, and the contact-making surface of this slide block is from top to bottom gradually near the inclined-plane of lower contact centerline direction.

3, electric coupling according to claim 1 is characterized in that: described back-moving spring is provided with 2.

4, electric coupling according to claim 1 is characterized in that: the contact portion of the 3rd terminals of described lower contact is stretched out the cavity of described central insulation post.

5, electric coupling according to claim 1 and 2 is characterized in that: on the base plate of described lower contact and be positioned at the clearance space that described central insulation post and annular insulation wall form and offer the leaking hole that connects described lower contact bottom.

6, electric coupling according to claim 1 and 2, it is characterized in that: described top connection is a concentric circle assembly, described concentric circles assembly comprises outer shroud insulated ring and interior ring insulated ring, be arranged at first binding post at center, and second terminals and the 3rd terminals that encircle the insulated ring both sides in being arranged at, when coupling, described interior ring insulated ring can plug together in the clearance space of the central insulation post of described lower contact and the formation of annular insulation wall, and described first binding post can insert in the centre bore of described lower contact.

7, electric coupling according to claim 6 is characterized in that: described first binding post is the binding post of non-ground connection.

8, a kind of insulating pot is characterized in that: comprise electric coupling as claimed in claim 1 or 2.