CN2141605Y

CN2141605Y - Rotary position moving type safety plug and socket

Info

Publication number: CN2141605Y
Application number: CN 92237716
Authority: CN
Inventors: 唐才全; 梅自省
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-10
Filing date: 1992-11-10
Publication date: 1993-09-01
Anticipated expiration: 2002-11-10

Abstract

The utility model relates to rotary position moving type safety plug and socket, which belongs to the connecting parts of electrical appliances. The utility model is characterized in that the inner cover tooth of an inner cover in an axial groove is positioned in the circumferential direction with floating in the axial direction and positioned in the axial direction in the action of a spring between an outer cover and a base disk of the socket. The plug is inserted into the socket and presses the inner cover to a determined depth, a limited angle is rotated and displaced along the prescribed direction plane, a latch and a sleeve are engaged and positioned to switch on the power supply, so the electric shock hazard resulting from the malfunction is avoided. The plug is unable to drop out because the limiting of the outer cover, so the utility model is the ideal anti-electric-shock, anti-loosing, anti-dropping, full sealing of live parts and safe plug and socket.

Description

Rotary position moving type safety plug and socket

The utility model relates to a kind of rotation displacement formula safety plug and socket, belongs to the connection parts of electric device.

No matter known electronic apparatus attaching plug and socket are two utmost points, three utmost points or three-phase and quadrupole, no matter are circular or rectangle, simple in structure, easy to use and cheaply followed use for a long time because of it.But hand-held plug inserts pin hole on the socket and the elasticity sleeve endoporus in the socket and energized with latch, and this moment, plug may be in half insertion state, the conduction latch that misoperation and part expose outside socket may take place easily cause Danger Electric shock risk; Latch is entirely by the sleeve resilient clamp, do not have that other are spacing, and plug is easily loosening and come off, and influence the use of electric device, especially influences some and should not operation cuts off the power supply and the use of the electric device of loose contact.

China utility model patent CN86207428U discloses a kind of " rotary safe attaching plug/socket ", its principal character is that the pin post enters socket cover by the pin hole slot, after rotating to an angle, the metal pin of pin post contacts with conductive reed, and it is exposed and play the protection against electric shock effect that socket does not have current-carrying part outward; The position rotating groove is stuck in the pin post hole slot, and the pin post blocks socket cover and plays the effect that anti-plug comes off.But, when this plug and socket separates in socket, a large tracts of land pin post hole slot of linking up charged part and external environment condition in the socket is arranged on the socket, even plug insertion socket also is rotated in place, this pin post hole slot also is that part is uncovered, very dangerous, also do not prevent dust and the trouble free service of the cleaning that can not keep electric parts in the socket with assurance excellent electric contact and electric device; This structural limitations the size of positioning and guiding column spinner in the socket, also influence plug plane stability of rotation and reliability.

The purpose of this utility model is to avoid the above-mentioned weak point of prior art and a kind of protection against electric shock, anti-loose, good rotation displacement formula safety plug and the socket of sealing are provided.

Task of the present utility model is finished by following technical measures.

The utility model is made up of plug and socket, and plug is by one group of latch of connector assembly, bayonet cap, the number of phases of deciding as required, number of poles and latch number: conduction latch and ground pin, wiring pile, screw and nut are formed.Socket is by the sleeve of socket chassis, enclosing cover, wiring pile, respective numbers: ground connection sleeve, conduction sleeve, screw and nut is formed.Enclosing cover is connected with screw thread or connector with socket.The rib of the connector assembly of plug and the opening on the bayonet cap are formed the plug entrance hole, and wiring pile mount pad and lead-in wire rib are arranged in the connector assembly.

The sleeve mount pad, socket mounting hole and the power lead entrance hole that are raised in the socket chassis are arranged on the plug chassis.Extend barrier ribs on each sleeve mount pad.

The tenon piece that two projectioies are arranged on the bayonet cap can not deviate from it as restriction plug position behind plug insertion guiding and the rotation displacement.

Tubular spring seat and cannelure are arranged on the socket chassis.

An inner cap is arranged between socket chassis and the enclosing cover, and its lower end is tubular.Between the tubular spring seat of socket chassis central authorities and inner cap a little spring is arranged, an end withstands tray bottom, and its other end withstands on the inner cap top inboard.Isolated insulation cover between tubular spring seat double as spring and sleeve.Between the cannelure on socket chassis and inner cap pipe lower edge a big spring is arranged, an end withstands inner cap pipe lower edge, and the other end withstands on the cannelure bottom on socket chassis.

The circumferential outer rim of inner cap has two tenon tooths, is used for being stuck in axial its rotation of tongue-and-groove alignment restrictions of enclosing cover.Inner cap top has the pin hole of respective numbers: ground pin hole and conduction pin hole also have the end face of a projection, live the plug insertion of enclosing cover in order to closedtop.

Cover top portion has a plug insertion, and its peritreme circumferentially has the tongue-and-groove of matching, and it cooperates with tenon tooth on the bayonet cap, reliably guaranteed to avoid plug misplug into.The enclosing cover inwall has two little tenon pieces and two big tenon pieces, forms axial tongue-and-groove between the large and small tenon piece, inner cap because of its inner cap tenon tooth in axial tongue-and-groove, under the effect of spring, axially float and realize circumferentially location and axially directed.

Form two circumferential tongue-and-grooves of linking up between the bottom surface of big tenon piece and the end face on socket chassis with axial tongue-and-groove.When plug drove the inner cap rotation displacement, the inner cap tenon tooth promptly was embedded in the circumferential tongue-and-groove and is guiding with this tongue-and-groove, and simultaneously big tenon piece restriction inner cap can not be upspring it.

The lower end of little tenon piece extends to the end face near the socket chassis, protrudes in circumferential tongue-and-groove, and this elongated end protuberance restriction inner cap tenon tooth can only rotate to a direction of appointment.Because of the inner cap lower end is tubular, the axial tongue-and-groove of its inwall and enclosing cover guarantees that together the guiding of inner cap axial float is stable and reliable.

Ground connection sleeve and conduction sleeve are the pincer covers of same lateral openings.Each pincerlike cover center with in the θ angle of staggering, the center, respective pins hole that covers, isolate by barrier ribs, this angle is to make latch angle in place after the plug insertion socket rotation.Cover top portion patchhole inner surface is the depth H that plug inserts to the axial length of the tenon tooth end of bayonet cap outer rim projection.Inner cap floats to the circumferential tongue-and-groove of enclosing cover plane downwards, is guiding by the inner cap tenon tooth with circumferential tongue-and-groove, plug and inner cap rotate towards definite direction, under the H degree of depth, the latch end enters plane, sleeve place, orientation with plug and inner cap is rotated, and the latch end snaps in the pincer cover of sleeve, finishes the contact conduction.

The utility model compared with prior art has following advantage:

When 1, plug of the present utility model did not insert socket, only the pin hole that covers in the socket and the external world communicated, because charged part in the socket can not be touched in the θ angle and have barrier ribs to isolate of staggering; Plug inserts pin hole, and is promptly totally-enclosed in the socket, and plug insertion socket arrives before the predetermined insertion depth can not rotation displacement, get along well fully sleeve contact and not charged of latch; Before plug rotated to predetermined angular, latch did not contact with sleeve and not charged, so the utility model is fool proof reliable.

2, behind plug and the inner cap rotation displacement θ angle, the pincerlike mouth of latch and sleeve enters engagement, and plug is energized, and plug is subjected to that enclosing cover is spacing can not be deviate from.

Like this, plug and socket protection against electric shock, anti-loose, charged part sealing, safety utilization of electric power and stable and reliable operation purpose have been reached.

The explanation of accompanying drawing drawing:

Fig. 1 is the plug and socket structural representation, the pin hole of plug insertion socket inner cap and state when not pushing inner cap.

Fig. 2 is for plug insertion socket and push inner cap to depth H view during rotation displacement not.

Fig. 3 is a C-C cutaway view among Fig. 2--bayonet cap guiding tenon tooth inserts state diagram through the enclosing cover tongue-and-groove.

Fig. 4 is for plug insertion socket and push inner cap rotation θ angular displacement after the depth H and make latch snap in the pincerlike mouthful state diagram of sleeve.

Fig. 5 is C among Fig. 4 ₁-C ₁Cutaway view--plug is rotation displacement in socket, and the bayonet cap tenon tooth is stuck in the state diagram under the enclosing cover.

Fig. 6 is the end view of plug.

Fig. 7 is the lead entrance hole of plug, tenon tooth, bayonet cap guiding tenon tooth and the latch assembling internal view of connector assembly.

Fig. 8 is the cutaway view of the F-F of Fig. 7.

Fig. 9 is wiring pile and a sleeve installation diagram in the socket base.

Figure 10 is the E-E cutaway view among Fig. 9.

Figure 11 is the connector assembly internal view.

Figure 12 is the enclosing cover profile.

Figure 13 is the D-D cutaway view among Figure 12.

Figure 14 is inner cap and enclosing cover top view.

Figure 15 is the inner cap top view.

Figure 16 is a socket chassis schematic diagram.

Figure 17 is the sleeve schematic diagram.

Figure 18 is the sleeve end view.

Following the utility model will describe in detail embodiment (in conjunction with the accompanying drawings).

With two-phase three polar circle shape latch plug and sockets is embodiment, is used in the indoor or similar indoor environment of-30 °～40 ℃, no corrosion and explosion gas and electro-conductive dust.220～380 volts of maximum operating voltages, high workload electric current 40 peaces.

Plug 1(sees Fig. 6,7 and 8) see Figure 11 by connector assembly 11(), bayonet cap 12(sees Fig. 5), conduction latch (13a and 13b), ground pin 14, wiring pile 15, screw (16 and 18) and nut 17 form.Connector assembly 11 and bayonet cap 12 are moulding.

Socket 2 is seen Figure 16 by socket chassis 20(), inner cap 21(sees Fig. 1, Figure 14 and 15), enclosing cover 22(sees Fig. 1,12,13 and 14), big spring 23, little spring 24, wiring pile 25, ground connection sleeve 26, conduction sleeve (27a and 27b) (seeing Figure 17 and 18), screw (28-1 and 28-2) and nut 29 form (see figure 1).Enclosing cover 22 is connected with screw thread or connector with socket chassis 20.The rib 111 of the connector assembly 11 of plug 1 and the opening on the bayonet cap 12 are formed plug entrance hole 122.Wiring pile mount pad (112a, 112b and 112c) and lead-in wire rib (113a, 113b and 113c) (seeing Figure 11) are arranged in the connector assembly 11.Socket chassis 20, inner cap 21 and enclosing cover 22 are moulding.

Tubular spring seat 203 and cannelure 201 are arranged on the socket chassis 20.An inner cap 21 is arranged between socket chassis 20 and the enclosing cover 22, its lower end is tubular, have little spring 24, one ends to withstand tubular spring seat 203 bottoms 204 between the tubular spring seat 203 of socket chassis 20 central authorities and inner cap 21, the other end withstands inner cap 21 inside top 214(and sees Fig. 1).Have big spring 23, one ends to withstand inner cap 21 pipe lower edge shoulders 213 between the cannelure 201 on socket chassis 20 and inner cap 21 pipe lower edges, the other end withstands cannelure bottom 202.Big spring 23 and little spring 24 are spiral cylinder compression spring.

The circumferential outer rim of inner cap 21 has two tenon tooths (211a and 211b), and there are ground pin hole 216 and conduction pin hole (217a and 217b) in inner cap 21 tops and the end face (seeing Fig. 1 and Figure 15) of a projection is arranged.

Plug hole is arranged at enclosing cover 22 tops, its peritreme circumferentially has the tongue-and-groove of matching (225a and 225b), enclosing cover 22 inwalls have two little tenon pieces (223a and 223b) and two big tenon pieces (221a and 221b), greatly, form axial tongue-and-groove (221a and 221b) between the little tenon piece, inner cap tenon tooth (211a and 211b) is placed on respectively in the axial tongue-and-groove (221a and 221b), form two circumferential tongue-and-grooves (224a and 224b) of linking up with axial tongue-and-groove (221a and 221b) respectively between the bottom surface of big tenon piece (222a and 222b) and the end face on socket chassis 20, the lower end of little tenon piece (223a and 223b) extends to the end face near socket chassis 20, gives prominence at circumferential tongue-and-groove (224a and 224b) and (sees Figure 12, in 13 and 14).

Ground connection sleeve 26 and conduction sleeve (27a and 27b) are the pincer covers of same lateral openings, the θ angle (seeing Fig. 9,17 and 18) of staggering, center, respective pins hole on each pincerlike cover center and the inner cap 21.

Hand-held plug 1 inserts the pin hole of socket inner cap 21, and when not pushing inner cap 21, inner cap 21 rises under the spring force effect, and the end face of inner cap 21 middle part projectioies is sealed enclosing cover plug insertion (seeing Fig. 1 and Figure 14).Because inner cap tenon tooth (211a and 211b) is stuck in the axial tongue-and-groove of enclosing cover (221a and 221b), inner cap 21 is subjected to the restriction of big tenon piece of enclosing cover (222a and 222b) and little tenon piece (223a and 223b) and can not rotates, latch does not contact with sleeve, the not charged (see figure 1) of plug.

Push inner cap 21 to depth H, not before the rotation displacement, plug latch dotted line position in Fig. 9, ground pin 14 be at the OA line, plug not charged (seeing Fig. 2 and Fig. 3).The θ angular displacement that turns clockwise makes latch snap in pincerlike mouthful of sleeve, ground pin is the OB line in Fig. 9, and plug and socket enters normal operation position, plug 1 charged (see figure 4), bayonet cap tenon tooth (121a and 121b) is stuck in enclosing cover 22 times, plug 1 (see figure 5) that can not get loose.

Claims

1, a kind of rotation displacement formula safety plug and socket, the connection parts that belong to electric device, form by plug 1 and socket, plug 1 is by connector assembly 11, bayonet cap 12, as required and the fixed number of phases, one group of latch of number of poles and latch number: conduction latch (13a and 13b) and ground pin 14, wiring pile 15, screw (16 and 18) and nut 17 are formed, socket 2 is by socket chassis 20, enclosing cover 22, wiring pile 25, the sleeve of respective numbers: ground connection sleeve 26, conduction sleeve (27a and 27b), screw (28-1 and 28-2) and nut 29 are formed, enclosing cover 22 is connected with screw thread or connector with socket chassis 20, the rib 111 of the connector assembly 11 of plug 1 and the opening on the bayonet cap 12 are formed plug entrance hole 122, wiring pile mount pad (112a is arranged in the connector assembly 11,112b and 112c) and lead-in wire rib (113a, 113b and 113c), it is characterized in that:

A) the tenon piece (121a and 121b) of two projectioies is arranged on the bayonet cap 12 of plug 1;

B) on the socket chassis 20 of socket 2 tubular spring seat 203 and cannelure 201 are arranged;

C) inner cap 21 is arranged between socket chassis 20 and enclosing cover 22, its lower end is tubular, between the tubular spring seat 203 of socket chassis 20 central authorities and inner cap 21, a little spring 24 is arranged, between the cannelure 201 on socket chassis 20 and inner cap 21 pipe lower edges, a big spring 23 is arranged, the circumferential outer rim of inner cap 21 has two tenon tooths (211a and 211b), and the pin hole of respective numbers is arranged at inner cap 21 tops: ground pin hole 216 and conduction pin hole (217a and 217b) also have the end face of a projection;

D) plug insertion is arranged at enclosing cover 22 tops, its peritreme circumferentially has the tongue-and-groove of matching (225a and 225b), enclosing cover 22 inwalls have big tenon piece (222a and 222b) on two little tenon pieces (223a and 223b) and two, greatly, form axial tongue-and-groove (221a and 221b) between the little tenon piece, inner cap tenon tooth (211a and 211b) is placed on respectively in the axial tongue-and-groove (221a and 221b), form two circumferential tongue-and-grooves (224a and 224b) of linking up with axial tongue-and-groove (221a and 221b) respectively between the bottom surface of big tenon piece (222a and 222b) and the end face on socket chassis 20, the lower end of little tenon piece (223a and 223b) extends to the end face near socket chassis 20, gives prominence in circumferential tongue-and-groove (224a and 224b);

E) ground connection sleeve 26 and conduction sleeve (27a and 27b) are the pincer covers of same lateral openings, the θ angle of staggering, center, respective pins hole on each pincerlike cover center and the inner cap 21;

F) extend barrier ribs (208a, 208b and 208c) on the sleeve mount pad (205a, 205b and 205c).