CN101299496A

CN101299496A - Sleeve of power supply socket

Info

Publication number: CN101299496A
Application number: CNA2007100543417A
Authority: CN
Inventors: 周晓华
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-30
Filing date: 2007-04-30
Publication date: 2008-11-05
Anticipated expiration: 2027-04-30
Also published as: CN100589283C

Abstract

The invention provides a household or the same power socket sleeve with reliable contact, large contact area and large flow capacity with the power plug. An oblique elastic contact sheet, an oblique elastic bearing sheet, a rotatable supporting arm and an elastic auxiliary stay sheet are bent in turn from the upper end of the shot wall to the sleeve inner. When the sleeve and the bolt are completely tabled, the rotatable supporting arm removes along the tabling direction to the level position, rotates in the sleeve to become a supporting beam, supported between the slot walls to become a 'permanent supporting arm', which pushes the bolt to contact with the tight surface of the sleeve, namely becoming the maximized permanent clamping force, which does not weaken or lose never.

Description

A kind of power socket and bush

Affiliated technical field

The present invention relates to the supply socket of a kind of family expenses and similar applications, the sleeve of supply socket has maximized permanent chucking power.

Background technology

Latch is flat on national Specification family expenses and the similar applications attaching plug, and in the world on the family expenses of many countries and the similar applications attaching plug latch also mostly be flat, but the supply socket interpolation nested structure supporting with it of Xiao Shouing is unreasonable in the market, the sleeve shape and structure mostly is " U " shape groove of simply tightening the neck mouth, plug inserts normal appearance the in the supply socket: the one, and contacting of sleeve and latch is the line contact, contact area is very little, causes through-current capability little; The 2nd, the only single mechanical elasticity clamping of sleeve clamping latch by sleeve, chucking power is little, contacts insecure; The 3rd, plug is inserted in the supply socket for a long time, and the mechanical elasticity of sleeve reduces gradually in the supply socket, until forfeiture, is prone to loose contact.Because contact area is little, chucking power is little and long-term use back chucking power is easily lost, cause contact resistance big, contact site very easily generates heat, heating impels the sleeve mechanical elasticity to quicken to reduce and lose again conversely, impel contact resistance further to increase, form a kind of vicious circle, the probability of causing danger and big.

In addition, sleeve adopts methods such as nickel plating, silver or alloy in the supply socket that has, to reduce contact resistance; Sleeve copper sheet thickness in the increase supply socket that has increasing chucking power, but does not all have effectively to increase the chucking power of contact area and sleeve, has increased production cost on the contrary.Sleeve adopts simple cover to cooperate with the pin plus-minus tolerance in the supply socket that has, and to increase chucking power, the chucking power of sleeve is bigger when use just occurring, repeatedly plugs to overlap behind the plug to cooperate forfeiture with the pin plus-minus tolerance, and sleeve is finally lost chucking power; The supply socket that has is by increasing external springs or shell fragment increasing the sleeve chucking power, but complex process, the cost height.

Summary of the invention

For can be low-cost and effectively increase on the attaching plug contact area of sleeve and the chucking power of sleeve in the latch and supply socket, the invention provides a kind of power socket and bush, very big contact area is arranged when chimeric with latch, sleeve has maximized permanent chucking power, the contact area that has fundamentally solved sleeve in the supply socket is little, chucking power is little and easily lose problem, improved fail safe greatly, production technology is simple, with low cost simultaneously.

The technical solution adopted for the present invention to solve the technical problems is: form " U " shape groove power socket and bush by a rectangular elastic sheet metal bending, an elastic contact chip that tilts has been extended in the diapire direction bending in groove of the upper end of one cell wall, this elastic contact chip is roughly parallel to self ground bending to the internal direction of itself and above-mentioned cell wall again and has extended a resiliency supported sheet that tilts, this resiliency supported sheet has extended a rotatable support arm towards above-mentioned elastic contact chip one side perpendicular to self ground bending again, and the direction that this rotatable support arm extends elastic contact chip along bending bends has again extended an elasticity supplemental support sheet.

Owing to reasons such as the plasticity of the thickness tolerance of resilient metal strip and the plasticity that has thereof, insulation crust, production technologies, the length of rotatable support arm is a bit larger tham the poor of latch thickness on width and resilient metal strip thickness between the cell wall of " U " shape groove sleeve, the plug.

The angle of elasticity supplemental support sheet and rotatable support arm is a bit larger tham 90 °.

The invention has the beneficial effects as follows: insert in the sleeve process at latch, the elastic contact chip that latch promotes to tilt rotates, rotatable support arm also turns to horizontal level gradually along with the pressurized rotation of the elastic contact chip that tilts, become a brace summer, be supported between cell wall, become one " permanent support arm ", promote latch and contact, that is to say to have formed a maximized permanent chucking power with cell wall, the tight face of elastic contact chip.Simultaneously along with the elastic contact chip that tilts constantly rotates, the contact-making surface of itself and elasticity supplemental support sheet constantly increases, spur elasticity supplemental support sheet again and it rotates in the same way, the auxiliary rotation that has spurred rotatable support arm of its rotation, be that elasticity supplemental support sheet has also impelled the formation of " permanent support arm ", and elasticity supplemental support sheet has increased the support contact area of rotatable support arm and elastic contact chip after " permanent support arm " forms, strengthened the stability of " permanent support arm ", avoided in the reality causing " permanent support arm " to form and phenomenon built on the sand because of resilient metal strip is very thin.So the supply socket contact is more firm, through-current capability is bigger, and fail safe is higher; And adopt thin elastic sheet metal bending sleeve just can realize above-mentioned purpose, so production technology is simple, cost is also cheap.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples

(this explanation is an example with the supply socket of single-phase the two poles of the earth, sleeve and its isostructure in band ground supply socket of single-phase the two poles of the earth and the three-phase power socket)

Fig. 1 is equipped with the three-dimensional view of an embodiment of the invention supply socket in being

Fig. 2 is the X-Y sectional view of Fig. 1

Fig. 3 be with the plug latch chimeric before the X-Y sectional view of Fig. 1

Fig. 4 is and the chimeric X-Y sectional view of Fig. 1 afterwards of plug latch

Fig. 5 is a front view of the present invention,

Fig. 5-the 0th, the bottom view of Fig. 5

Fig. 5-the 1st, the left side parallax stereogram of Fig. 5

Fig. 5-the 2nd, the right side parallax stereogram of Fig. 5

Embodiment

Fig. 1 is equipped with the side perspective schematic diagram of an embodiment of the invention supply socket in being, Fig. 2 is the X-Y sectional view of Fig. 1.Supply socket is made up of insulation crust 1 and conduction sleeve 3, has the through wires hole 11 of jack 10 and external power supply on insulation crust, has the wiring hole 30 of external power supply at the diapire 310 of conduction sleeve 3.

Show as Fig. 5, sleeve 3 usefulness one strip elastic sheet metal is bent into continuously, its shape and structure is: the contact chip 321 that arc-shaped bend portion 320 is arranged and tilt is extended in the diapire 310 directions bending in groove of cell wall 312 upper ends of " U " shape groove sleeve 3, and it has constituted the elastic contact chip 313 that tilts; Contact chip 321 bends again to the internal direction of itself and cell wall 312 and extends the support chip 323 that arc-shaped bend portion 322 is arranged and tilt, and it has constituted the resiliency supported sheet 315 that tilts; Support chip 323 extends a rotatable support arm 317 towards contact chip 321 sides perpendicular to bending noumenally again; Rotatable support arm 317 has bent out an elasticity supplemental support sheet 319 along the direction that contact chip 321 is extended in bending again.

Owing to reasons such as the plasticity of the thickness tolerance of resilient metal strip and the plasticity that has thereof, insulation crust, production technologies, the length L of rotatable support arm 317 will be a bit larger tham thickness R poor of latch 41 on the groove insied width W of " U " shape sleeve 3 and resilient metal strip thickness r, the plug 4, that is: L＞W-R-r.

In addition, between the contact chip 321 and another cell wall 311 of inclination, the lower end is preferably inconsistent, and the gap of upper end is substantially equal to the thickness R of latch 41.

Contact chip 321 that tilts and support chip 323 almost parallels that tilt.

Elasticity supplemental support sheet 319 is a bit larger tham 90 ° with the angle of rotatable support arm 317.

Show as Fig. 3, Fig. 4, insert in sleeve 3 processes at latch 41, latch 41 at first promotes the elastic contact chip 313 of inclination, and its pressurized is rotated towards cell wall 312, elastic contact chip 313 is again by extruding arc-shaped bend portion 322, and then the resiliency supported sheet 315 that promotes to tilt rotates towards cell wall 312; The rotation of resiliency supported sheet 315 drives rotatable support arm 317 again and moves along the direction rotation that latch 41 inserts.Insertion along with latch 41, rotatable support arm 317 rotates gradually and moves to horizontal level, rotation becomes a brace summer, be supported between cell wall, form one " permanent support arm ", promote latch 41 and contact, formed a maximized permanent chucking power exactly with cell wall 311, elastic contact chip 313 tight faces, so power socket and bush has very big chucking power, the chucking power of sleeve weakens never and loses.

Simultaneously, continuous rotation along with the elastic contact chip 313 of the insertion of latch 41 and inclination, the elastic contact chip 313 that tilts constantly increases with the contact-making surface of elasticity supplemental support sheet 319, frictional force also just constantly increases between them, having spurred elasticity supplemental support sheet 319 rotates in the same way with it, and then the rotation of the rotatable support arm 317 of auxiliary again pulling, promptly elasticity supplemental support sheet 319 has also impelled the formation of " permanent support arm "; And elasticity supplemental support sheet 319 has increased the support contact area of rotatable support arm 317 and resiliency supported sheet 313 after " permanent support arm " forms, strengthened the stability of " permanent support arm ", avoided in the reality causing " permanent support arm " to form and phenomenon built on the sand because of resilient metal strip is very thin.

And the rotation of the pressurized of elastic contact chip 313 and resiliency supported sheet 315, also promote latch 41 conversely and contact with cell wall 311 tight faces, also produced certain chucking power.

So clamping latch of the present invention is more firm, through-current capability is bigger, and fail safe is higher, longer service life.

The present invention is applicable to all connector art fields.

Claims

1 one kinds of power socket and bush, its shape and structure feature is: form " U " shape groove sleeve by strip elastic sheet metal bending, the elastic contact chip 313 that tilts has been extended in the diapire direction bending in groove of the upper end of one cell wall 312, elastic contact chip 313 is roughly parallel to self ground bending to the internal direction of itself and cell wall 312 and has extended the resiliency supported sheet 315 that tilts, perpendicular to the rotatable support arm 317 of self ground bending having extended, rotatable support arm 317 has extended an elasticity supplemental support sheet 319 along the direction bending that elastic contact chip 313 is extended in bending to resiliency supported sheet 315 towards elastic contact chip 313 1 sides.

2 a kind of power socket and bush according to claim 1 is characterized in that: the length L of rotatable support arm 317 is a bit larger tham the poor of latch thickness R on width W and resilient metal strip thickness r between the cell wall of " U " shape groove sleeve, the plug, i.e. L＞W-R-r.

3 a kind of power socket and bush according to claim 1 is characterized in that: elasticity supplemental support sheet 319 is a bit larger tham 90 ° with the angle of rotatable support arm 317.