CN2814721Y - Electric connector for electric heating kettle - Google Patents

Abstract

The utility model relates to an improvement of an electric joint for an electric heating kettle. The utility model comprises a male joint and a female joint in sleeve joint with the male joint, wherein a small hole is formed in the male joint in order to take up a grounding wire connecting terminal on an overheating protection device component; a conductive phase wire L wire connecting terminal and a conductive mean wire N wire connecting terminal whose geometric shapes are hollow cylinders are arranged outside the male joint in a concentric mode, and the conductive phase wire L wire connecting terminal and the conductive mean wire N wire connecting terminal are separated by air or other ways. A contact cover is arranged in a stanchion whose geometric shape is hollow rectangular on the inner section of the female joint. An L contact piece and an N contact piece which are respectively collocated with the conductive phase wire L wire connecting terminal and the conductive mean wire N wire connecting terminal in the male joint are respectively arranged on the outer sides of two long edges of a rectangular hole. The utility model has the advantages of good contact performance, reliable and steady electric performance and safe use, and the utility model can also be used in other devices such as cordless electric irons, electric frying pots, etc.

Description

The electrical connector of electric kettle

Technical field

The utility model relates to a kind of electrical connector, relates to a kind of pair of wire connection terminals and dependency structure thereof and particularly relates to contact on L, N binding post in the moving process, eliminates the L contact, the N contact bumps curved hidden danger.

Background technology

This type of device comprises two parts, and with base configuration and introduce the famale connector that is called of single-phase three utmost point power supplys, socket-connecting with famale connector has the male contact that is called of binding post.

Disclosed such as ZL200420065665.2, its male contact interior lower end, the L binding post and the N binding post of two hollow cylinders owing to will pack into, cause existing two inside-and-outside ring pits, so herein to set up an insulation transition pad, be inserted on the ring surface of male contact lower end, adopt ultrasonic wave plastic welding technology that the two is welded, make L, the contact of N contact is level and smooth when mobile on the binding post surface, do not make contact fall into circular pit and make L, the N contact bumps curved, but in the ultrasonic wave plastic welding, also exist the center displacement and the transition of in use insulating to get existing obscission discard, the L that this technical scheme is arranged again, in being respectively, the lower end of N binding post turns over round lip and outer anti-circle lip, manufacturing process is complicated, and defect rate is more high, need be improved its structure.

Summary of the invention

In order to solve deficiency of the prior art, the purpose of this utility model provides a kind of electrical connector of the electric kettle that has improved, and is to overcome aforesaid problem at least.

The technical solution of the utility model is: cancellation insulation transition pad, and L, the interior anti-round lip of N binding post lower end and outer anti-circle lip, change straight shape cylinder into, the lower end becomes two planar annulars, and the lower end planar annular of the insulating barrier in these two planar annulars and the male contact flushes, when male contact is engaged with famale connector, L, the plane is smooth on the planar annular of N binding post lower end and the centring ring contacts, circular pit can't appear, guarantee that contact smoothly and not causes L in moving herein, the N contact bumps curved, also make L, N binding post simplified manufacturing process, rate of finished products significantly improves, and has reduced cost.

 3 apertures that the male contact center is provided with; it is the axle shape ground connection binding post that is arranged in this aperture former; change be designed into another " overtemperature protection system " on metallic plate on riveting jail mutually; and this metallic plate is fastening subsides mutually with ground connection destination electric hot plate; then omitted in the former ground connection link around touching cover; make ground connection more reliable, and saved technology complicated around touching the cover part.This shape ground connection binding post is changed the concrete structure that is set on " overtemperature protection system ", and authorizing the application number of dispatch on June 3rd, 2005 is in 2004200088813 description to be arranged.

The contact of the center line N contact in the famale connector is protruding spherical, sphere diameter is N binding post internal diameter  d, the contact of phase line L contact is an indentations, recess arc diameter is about 4-4.5 times of L binding post external diameter  D, be provided with like this contact is contacted with the contacting by a contact and line of inside and outside circle cylinder of N and L binding post, become the face contact, thereby reduced contact resistance.

As preferably, described L contact is riveted with described L conduction inserted sheet and N conduction inserted sheet respectively mutually with the N contact, wherein contact adopts beryllium-bronze to make, and through Ageing Treatment, thickness is 0.25mm, the conduction inserted sheet adopts H62 brass to make, thickness is 0.5mm, and the contact after the processing has the spring steel performance, to guarantee stable contact pressure and the contact resistance of contact, elimination reduces because of the tired contact of contact contact pressure, and contact resistance increases and makes part temperatures too high until the hidden danger of damaging; On described L conduction inserted sheet and the N conduction inserted sheet mounting hole is arranged all, with the corresponding waist shape projection phase configuration that is arranged on described pillar bottom surface, and by the blanching instrument fastening it, whole solid and reliable.In the described famale connector, be arranged in the rectangular opening to touch cover length the longest, the N contact that is arranged on the outside, the long limits of rectangular opening two secondly, the L contact is the shortest, and such structure is when making the male contact socket, L connects in turn by ground connection E-center line N-phase line, when male contact was extracted, E disconnects in proper order by phase line L-center line N-ground connection, and was safe and reliable.

As preferably, be arranged on elasticity in the rectangle slotted hole of described pillar and touch the center chock that the hypomere portion of cover is provided with insulation.Make that touch the cover outer wall fits closely with the rectangular opening inwall, guarantee to touch and overlap the ground wire binding post that port shape is correctly admitted " overtemperature protection system ", make ground connection reliable.

As preferably, the inner conical surface of described famale connector shell is provided with four convex tendons, described convex tendon inner surface is on the same face of cylinder, the diameter on the described face of cylinder is consistent with the diameter D1 of centring ring, described centring ring and convex tendon are slippery, adopt matched in clearance, moving up and down to centring ring provides guide rail.

Characteristics such as therefore, it is well-balanced, rationally distributed to the utlity model has structure, and ground connection is reliable, and whole contact performance is good, and electric property is reliable and stable, and assembly technology is simple, and is easy to connect, safe and reliable, and useful life is long.This device also can be applied on the miscellaneous equipment, as cordless electric iron, electric frying pan etc.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the utility model split;

Accompanying drawing 2 is Q-Q cross-sectional view of Fig. 1;

Accompanying drawing 3 is a kind of structural representations of the utility model user mode;

Accompanying drawing 4 is the W of Fig. 1 structural representations to view;

Accompanying drawing 5 is that structural representation cuts open in the K-K office of Fig. 4;

Accompanying drawing 6 is that structural representation cuts open in the J-J office of Fig. 4;

Accompanying drawing 7 is that structural representation cuts open in the M-M office of Fig. 1;

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: with the electric kettle is example, and the utility model is made up of two parts, and referring to Fig. 1 and Fig. 3, male contact (20) is last, and famale connector (21) is following.Male contact (20) is assemblied in the electric kettle bottom, and fuses with it; Famale connector (21) is a benchmark with the male cone (strobilus masculinus) of shell (7), is assemblied in the internal taper hole of pedestal, and fuses with it.Pedestal is the work seat of electric kettle, and introduces working power for it.

The shell of male contact (20) is a centrosymmetric cup shell, its inner planar central that goes up is provided with  3 holes, phase line L binding post (2) and the center line N binding post (3) that geometry is a hollow cylinder is set outside it with one heart, its surface is all smooth, the employing fine copper is made, whole silver coated, to reduce oxidation and corrosion.The lower end planar annular of described binding post (2), (3) flushes with the lower end planar annular (1) of insulation interlayer (4), so that the slipping into and skidding off of contact.Be provided with insulation interlayer (4) between phase line L binding post (2) and the center line N binding post (3).Phase line L binding post (2) is connected with an end of electric heating element by left inserted sheet (5) and temperature control parts, and center line N binding post (3) is connected with the other end of electric heating element by right inserted sheet (6) and temperature control parts, and is assembled into one with electric kettle.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 6 and Fig. 7.Famale connector (21) inside center is provided with pillar (8), the geometry in its cross section is a hollow, rectangular, the upper end of pillar (8) is provided with short cylinder, which is provided with down inner cone, make the ground connection binding post of the  2.8 on " overtemperature protection system ", passing on male contact (20) inside behind  3 holes, planar central place, can import smoothly to be arranged on and touch cover (13) in the rectangular opening; Touch the center chock (14) that cover (13) hypomere portion is provided with insulation, make that to touch cover (13) outer wall tight with the applying of rectangular opening inwall.In the outside, rectangular opening two long limit L contact (11) and N contact (12) are set respectively, can suitably increase the radial motion space of contact like this, improved the contact performance of contact and binding post.The end of described L contact (11) and N contact (12) is provided with compound silver-based contact, and silver thickness is 0.5mm, makes it to be difficult for oxidized, and the cone angle of described contact is 100 °, and binding post is pushed contact smoothly open when making work; Wherein the conehead of the contact on the L contact (11) is set to indentations, the recess arc diameter be about phase line L binding post (2) external diameter  D 4-4.5 doubly, the conehead of the contact on the N contact (12) is set to protruding spherical, and sphere diameter is the internal diameter  d of center line N binding post (3).Can increase contact area like this, reduce contact resistance.On the inner conical surface of famale connector shell (7), be provided with four convex tendons (17), its inner surface is on the same face of cylinder, the diameter on the described face of cylinder is consistent with the diameter D1 of centring ring (10), described centring ring (10) is slippery with convex tendon (17), adopt matched in clearance, moving up and down to centring ring provides guide rail.The end of pillar (8) is equipped with centring ring (10), and its bottom is set to inner cone and Outer Taper, and its tapering is 10 °, and the cone height is 4/10 of centring ring (a 10) height.Interior Outer Taper play the guiding role, and makes contact can not touch mutually with the centring ring lower end when assembling.Be provided with back-moving spring (9) in the centring ring (10), it adopts martensitic stain less steel to make, and through 1050 ℃ of quenchings and 650 ℃ of temper, makes it to be difficult for corrosion.

Referring to Fig. 1, Fig. 3, Fig. 4 and Fig. 5, L contact (11) is riveted with L conduction inserted sheet (15) and N conduction inserted sheet (16) respectively mutually with N contact (12), and wherein contact adopts beryllium-bronze to make, and through Ageing Treatment, thickness is 0.25mm, and the conduction inserted sheet adopts H62 brass to make, and thickness is 0.5mm; On L conduction inserted sheet (15) and the N conduction inserted sheet (16) mounting hole is arranged all, with the corresponding waist shape projection phase configuration that is arranged on pillar bottom surface (8a), and by the blanching instrument fastening it, integral body is solid and reliable.Contact after the processing has the spring steel performance, to guarantee stable contact pressure and the contact resistance of contact, eliminates because of the tired contact of contact contact pressure reduces, and contact resistance increases and makes part temperatures too high until the hidden danger of damaging.

Referring to Fig. 1 and Fig. 3, in the famale connector (21), be arranged in the rectangular opening to touch cover (13) length the longest, the N contact (12) that is arranged on the outside, the long limits of rectangular opening two secondly, the shortest, the such structure of L contact (11) is when making electric kettle work, the male contact cover taps into famale connector, and L connects in turn by ground connection E-center line N-phase line; When electric kettle power cut-off male contact was extracted, E disconnects in proper order by phase line L-center line N-ground connection, and was safe and reliable.Because the binding post of male contact (20) is provided with one heart, and smooth surface, so when electric kettle is put pedestal into, can in office-position of rotation insertion.

Because aspects such as structural design, technology arrangement, material selection all meet related standards and definition, meet the mechanics decomposition principle, and the heat pressing process of introducing plastic industry maturation, so the utility model electric property is safe and reliable, it is stable to be active in one's movements, and also improve greatly useful life.

Claims (6)

1. the electrical connector of an electric kettle, comprise male contact and the famale connector that socket-connects with it, be provided with binding post in the male contact, be provided with contact in the famale connector and touch cover, it is characterized in that being provided with two binding posts (2), (3) in the male contact (20), be provided with contact L (11) and contact N (12) in the famale connector (21) and touch cover (13); The lower end planar annular (1) of the insulating barrier (4) in the male contact (20) flushes with the lower end planar annular of binding post (2), (3); The planar central place is provided with an aperture on male contact (20) inside.

2. the electrical connector of electric kettle as claimed in claim 1 is characterized in that on described L contact (11) and the N contact (12) that riveted joint has L conduction inserted sheet (15) and N conduction inserted sheet (16) respectively, and wherein contact employing beryllium-bronze is made.

3. the electrical connector of electric kettle as claimed in claim 2 is characterized in that on L conduction inserted sheet (15) and the N conduction inserted sheet (16) mounting hole being arranged all.

4. the electrical connector of electric kettle as claimed in claim 1 or 2 is characterized in that the described center chock (14) that cover (13) hypomere portion is provided with an insulation that touches.

5. the electrical connector of electric kettle as claimed in claim 1 or 2 is characterized in that being provided with shell (7) outside the described famale connector (21), and described famale connector (21) inside center is provided with pillar (8), the outer centring ring (10) that is provided with of pillar (8); The inner conical surface of described shell (7) is provided with four convex tendons (17), and described convex tendon (17) inner surface is on the same face of cylinder, and the diameter on the described face of cylinder is consistent with the diameter D1 of centring ring (10), and described centring ring (10) is slippery with convex tendon (17).

6. the electrical connector of electric kettle as claimed in claim 1 or 2, the head that it is characterized in that the contact of the interior N contact of famale connector (21) (12) is protruding spherical, sphere diameter is the endoporus  d of binding post (3), the head of the contact of L contact (11) is an indentations, and the recess arc diameter is 4-4.5 a times of binding post (3) external diameter  D.

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