CN113517585B

CN113517585B - Double-knife butt connector

Info

Publication number: CN113517585B
Application number: CN202010396707.4A
Authority: CN
Inventors: 赖柄源; 赖启益; 简昭宜; 张忠仁
Original assignee: Avertronics Inc
Current assignee: Avertronics Inc
Priority date: 2020-04-10
Filing date: 2020-05-12
Publication date: 2023-04-11
Anticipated expiration: 2040-05-12
Also published as: CN113517585A

Abstract

The invention discloses a double-knife butt connector, comprising: the plug-in type plug-in device comprises a male end connecting piece, a female end connecting piece and a limiting strip, wherein at least one first switch blade is convexly arranged on the male end connecting piece, a first front face and a first back face are formed on the first switch blade, at least one second switch blade is convexly arranged on the female end connecting piece, a second front face and a second back face are formed on the second switch blade, the second switch blade is arranged in an inserting groove, the inserting groove is convexly provided with the limiting strip, the limiting strip is arranged at the bottom of the inserting groove and abuts against the second back face, an allowable deformation included angle is formed between two surfaces of the limiting strip and the second back face, which are not in contact with each other, the first switch blade of the male end connecting piece is inserted into the inserting groove of the female end connecting piece to form extrusion connection of the first front face and the second front face, and the second switch blade is elastically deformed and pressed on the limiting strip, and accordingly elastic deformation between the first switch blade and the second switch blade is limited.

Description

Double-knife butt connector

Technical Field

The present invention relates to a connector for electronic signals and power, and more particularly to a dual-blade docking connector that uses dual-blade docking to achieve low cost, small size, high current resistance, high yield, and high water resistance.

Background

The known connector is used in a connection component of electronic signals and power supplies, and mainly has the functions of providing power connection of various electronic devices, enabling signals to be accurately transmitted and equipment to operate, and ensuring stable connection state of the power supplies or the signal transmission, the risk of resistance increase or electricity jump due to poor contact of the connector, and higher requirement on the connection stability of the connector when the connector is easy to vibrate or swing at two ends, so that the known connector is usually provided with a knife terminal (blade-shaped or plate-shaped structure) at a male end connector, and is provided with a spring plate terminal at a female end connector, and the knife terminal is clamped by the spring plate terminal, thereby being capable of tolerating more dimensional errors during production, maintaining the production yield of the connector and providing stable conductive effect, but considering that the known structure is not difficult to find out to have certain defects, the invention mainly aims to overcome the defects that the spring terminal needs to occupy larger assembly space than a knife switch, the production difficulty is multiplied and the reject ratio is high when the volume of the spring terminal is reduced, and the current born by an undersized sheet terminal is reduced, so the connector cannot further reduce the volume due to the limitation of the terminal, the invention improves the method into a double-knife butt joint method for connecting, thereby effectively overcoming the defects, and because the double-knife butt joint method also causes a plurality of problems, the double-knife butt joint method is not adopted by the prior art, the elasticity of the double-knife is mainly insufficient, if the distance of the double-knife is too far, the situation of poor contact exists, and if the distance of the double-knife is too close, the excessively deformed double-knife bends to generate larger gaps due to excessive mutual extrusion, and the defect of insufficient conductive contact area exists, therefore, the requirement of the double-blade butt connector for dimensional accuracy is too high, and the requirements of low cost, small volume, high current resistance and high yield cannot be met, and the technical problem to be improved by the invention is lacking in the comprehensive aspect.

In view of the above, the present inventors have made various experiments on the manufacturing, development and design of related products for many years, and have made detailed design and careful evaluation to achieve the above objectives, and finally have obtained a practical invention.

Disclosure of Invention

The present invention provides a dual-blade butt connector, which is to solve the above-mentioned drawbacks of the prior art, and includes:

the male end connecting piece is convexly provided with at least one first knife switch, and the first knife switch is provided with a first front surface and a first back surface; the female end connecting piece is convexly provided with at least one second knife switch, the second knife switch is provided with a second front face and a second back face, the first knife switch and the second knife switch are of plate body structures with the same thickness, the second knife switch is arranged in an inserting groove, the inserting groove is convexly provided with a limiting strip at the second back face of the second knife switch, the limiting strip abuts against the second back face at the bottom of the inserting groove, an allowable deformation included angle is formed between the limiting strip and the second back face, the first knife switch of the male end connecting piece is inserted into the inserting groove of the female end connecting piece to form extrusion connection of the first front face of the first knife switch and the second front face of the second knife switch, and at the moment, the second knife switch is elastically deformed and pressed on the limiting strip, so that the elastic deformation amount between the first knife switch and the second knife switch is limited.

The male end connecting piece penetrates through the first switch blade through a sleeve body, the female end connecting piece penetrates through the second switch blade through a block body, the elasticity of the block body is higher than that of the sleeve body, and the second switch blade has elastic deformation larger than that of the first switch blade.

The male end connecting piece penetrates through the first knife switch by a sleeve body, the first knife switch is arranged on the sleeve body in a surrounding mode to form a ring, the female end connecting piece comprises a block body and a base, the block body penetrates through the second knife switch, the base penetrates through the insertion groove, one end, located in the insertion groove, of the base is provided with an expanded positioning chamber in a communicated mode, the block body is fixed in the positioning chamber and abuts against an opening at one end, located in the insertion groove, of the block body, the block body forms a groove bottom of the insertion groove, the relative position of the second knife switch and the limiting strip can be positioned, and the female end connecting piece is inserted into the ring of the male end connecting piece by the base.

Wherein, the cover body is formed with an external screw thread section on the surface of this ring of one end, and the other end of this cover body encapsulates and has a public end body, and this base encapsulates and has a female end body in the one end of fixed this block again, and this female end body cover is equipped with a nut, and this female end body is formed with a bulge loop that can block this nut in addition, and this nut lock locates this external screw thread section.

Wherein, the base is sleeved with a water stop ring, the periphery of the opening of the ring is convexly provided with a sharp ring, and the sharp ring is used for extruding the water stop ring from the front side, thereby forming the leakage-proof effect between the base and the ring.

The sleeve body is provided with a plurality of signal needles in a penetrating way, the base is provided with a plurality of through holes, a plurality of signal connecting rods penetrate through the base and are arranged at the through holes, and the male end connecting piece and the female end connecting piece are in butt joint to form electric connection of the signal needles and the signal connecting rods.

Wherein, several signal plug-in strip is worn to be equipped with by this cover body of this public end connecting piece, and several quad slit has been seted up to this base of this female end connecting piece, let several communication plug-in strip pass this base and set up in this quad slit, this quad slit is equipped with a blend stop in the protruding one side of neighbouring this communication plug-in strip again, form this signal plug-in strip and this communication plug-in strip electric connection at this public end connecting piece and this female end connecting piece butt joint, the extrusion of each other of this signal plug-in strip and this communication plug-in strip simultaneously, let this communication plug-in strip support and press in this blend stop, borrow this elastic deformation volume between restriction this signal plug-in strip and this communication plug-in strip.

Wherein, the allowable deformation included angle is an included angle formed from one point of mutual contact between the limiting strip and the second knife switch to two points of mutual non-contact, and the angle of the allowable deformation included angle is between 0.5 and 1.5 degrees.

The second knife switch pushes the first knife switch relatively, so that the free end of the first knife switch on the first back surface is pressed against the inner wall surface of the insertion groove, and the first knife switch is extruded to the second knife switch.

The male end connecting piece penetrates through the first switch blade through a sleeve body, the female end connecting piece penetrates through the second switch blade through a block body, and the length of the second switch blade protruding out of the block body is longer than the length of the first switch blade protruding out of the sleeve body, so that the second switch blade has elastic deformation larger than that of the first switch blade.

The first main objective of the present invention is to provide a connector with a first switch blade and a second switch blade, wherein the first switch blade and the second switch blade are plate structures with the same thickness, the same structure is used to achieve the effect of reducing the mold opening cost and the inventory cost, and the male connector and the female connector are connected in a butt joint manner by using two switch blades, so that more power terminals can be arranged in a limited space, and the male connector and the female connector can increase the current value that the male connector and the female connector can bear by using the face-to-face joint state of the first switch blade and the second switch blade, so as to effectively reduce the volume of the connector under the same rated current state.

The second main objective of the present invention is to provide a deformation-allowable included angle between the end of the limiting bar contacting with the second knife switch and the two surfaces not contacting with each other, so that the limiting bar can provide the second back surface of the second knife switch to abut against the second back surface of the second knife switch, and prevent the second knife switch from being excessively deformed to separate the first knife switch, so that the first front surface and the second front surface can maintain surface-to-surface electrical connection, and the limiting bar can block the second knife switch, so that the first knife switch and the second knife switch can maintain surface-to-surface contact at the closer relative positions, which can improve the fault tolerance rate during production, and has both quality and yield.

Other objects, advantages and novel features of the invention will become apparent from the following detailed description of the invention when considered in conjunction with the drawings.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded perspective view of the present invention;

FIG. 3 is a partial exploded perspective view of the present invention;

FIG. 4 is a longitudinal cross-sectional view of the female end connector of the present invention;

FIG. 5 is a transverse cross-sectional view of the female end connector of the present invention;

FIG. 6 is a schematic view of a usage state of the present invention;

FIG. 7 is a schematic view of the present invention in use (II);

FIG. 8 is a schematic view (III) illustrating the operation state of the present invention;

FIG. 9 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 8 in accordance with the present invention;

FIG. 10 is a longitudinal cross-sectional view of another embodiment of the present invention;

FIG. 11 is a partial exploded perspective view of yet another embodiment of the present invention;

FIG. 12 is a longitudinal cross-sectional view of yet another embodiment of the present invention;

fig. 13 is a transverse cross-sectional view of yet another embodiment of the present invention.

Symbolic illustration in the drawings:

10, a male end connecting piece;

11, a first knife switch;

111: a first front side;

112, a first back surface;

12, a sleeve body;

13, a ring;

131 is an external thread section;

132, a tip ring;

14, a male end body;

15, a signal pin;

16, a signal knife switch;

20, female end connecting piece;

21, a second knife switch;

211, a second front surface;

212 second back side;

22, inserting the groove;

221, a limit strip;

23, a block body;

24, a base;

241 is a positioning chamber;

242, punching;

243, a square hole;

244, barrier strips;

25, a female end body;

251, a convex ring;

26, a screw cap;

27, a water stop ring;

28, a signal connecting rod;

29, a communication knife switch;

and theta is the allowable deformation included angle.

Detailed Description

In order to make the objects, features and functions of the present invention more clear, the following detailed description is provided in conjunction with the accompanying drawings: as shown in fig. 1 to 5, a double blade butt type connector includes: a male connector 10 and a female connector 20, a male connector 10 having at least a first switch blade 11 protruding therefrom, the first switch blade 11 having a first front surface 111 and a first back surface 112, the male connector 10 having a sleeve 12 penetrating the first switch blade 11, the sleeve 12 enclosing the first switch blade 11 to form a ring 13, a female connector 20 having at least a second switch blade 21 protruding therefrom, the second switch blade 21 having a second front surface 211 and a second back surface 212, the first switch blade 11 and the second switch blade 21 having the same thickness, the same structure being used to reduce the mold opening cost and the inventory cost, and the first switch blade 11 and the second switch blade 21 being made of the same material, so that the highest current value that the male connector 10 and the female connector 20 can bear can be consistent to effectively reduce the overall volume and resist high current, the second knife switch 21 is disposed in an inserting groove 22, the inserting groove 22 is disposed on the second back surface 212 of the second knife switch 21 and has a limiting strip 221 protruding therefrom, the limiting strip 221 abuts against the second back surface 212 at the bottom of the inserting groove 22, and an allowable deformation included angle θ is formed between the limiting strip 221 and the second back surface 212, the allowable deformation included angle θ is an included angle formed between one end of the limiting strip 221 in contact with the second knife switch 21 and two surfaces of the limiting strip that are not in contact with each other, the allowable deformation included angle θ is 0.5 degrees to 1.5 degrees, and the allowable deformation included angle θ is preferably 1 degree, and further, the female end connecting member 20 includes a block 23 and a base 24, the block 23 penetrates through the second knife switch 21, the base 24 penetrates through the inserting groove 22, and one end of the base 24 in the inserting groove 22 is in an expanded form and is communicated with a positioning chamber 241, the block 23 is fixed to the positioning chamber 241, and the block 23 is pressed against an opening at one end of the inserting groove 22, so that the block 23 forms a groove bottom of the inserting groove 22, and further, the relative position between the second blade 21 and the limiting strip 221 can be positioned, the female connector 20 is inserted into the ring 13 of the male connector 10 through the base 24, so that the first blade 11 of the male connector 10 is inserted into the inserting groove 22 of the female connector 20, and the extrusion connection between the first front surface 111 of the first blade 11 and the second front surface 211 of the second blade 21 is formed, at this time, the second blade 21 is elastically deformed and pressed against the limiting strip 221, and simultaneously, the second blade 21 is relatively pushed against the first blade 11, so that the free end of the first blade 11 at the first back surface 112 is pressed against the inner wall surface of the inserting groove 22, thereby the first blade 11 is pressed toward the second blade 21, and the contact between the first blade 21 and the second front surface 211 can be limited. As shown in fig. 2 and 3 in conjunction with fig. 8, the sleeve 12 has an external thread section 131 formed on the surface of the ring 13 at one end, and a male end body 14 is encapsulated at the other end of the sleeve 12, and the base 24 has a female end body 25 encapsulated at one end of the block 23, and the female end body 25 is sleeved with a nut 26, and the female end body 25 has a convex ring 251 capable of blocking the nut 26, and the nut 26 is locked to the external thread section 131, so as to prevent the male end connector 10 and the female end connector 20 from being separated by itself in a screw locking manner, and the base 24 is sleeved with a water stop ring 27, and the opening periphery of the ring 13 is protruded with a tip ring 132, and the tip ring 132 is used for extruding the water stop ring 27 at the front side, thereby forming a leakage-proof effect between the base 24 and the ring 13, and further allowing the nut 26 to provide a proper buffering effect through the elasticity of the water stop ring 27 when the external thread section 131 is locked, so as to prevent the nut 26 and the external thread section 131 from being deformed excessively.

Wherein, the sleeve body 12 is provided with a plurality of signal pins 15, and the base 24 is provided with a plurality of through holes 242, a plurality of signal connecting rods 28 are arranged at the through holes 242 by penetrating the base 24, the male end connecting piece 10 is connected with the female end connecting piece 20 to form the electrical connection between the signal pins 15 and the signal connecting rods 28, the second switch blades 21 are symmetrically arranged on the base 24 of the female end connecting piece 20, and the signal connecting rods 28 are annularly arranged on the outer periphery of the second switch blades 21, thereby providing the connection function of the power supply and the signal source in a limited space.

As shown in fig. 4 to 9, when the male end connector 10 is inserted into the female end connector 20, the male end connector 10 is sleeved on the base 24 of the female end connector 20 by the ring 13 of the sleeve 12, and the first blade 11 is inserted into the insertion groove 22 of the base 24, so that the free ends of the first blade 11 and the second blade 21 are pressed against each other, the second blade 21 is bent toward the position-limiting strip 221 by the elastic deformation of the first blade 11 and the second blade 21, and when the second back 212 of the second blade 21 completely abuts against the position-limiting strip 221, the second blade 21 is effectively prevented from being excessively deformed to separate the first blade 11, correspondingly, the second front surface 211 of the second blade 21 is also used to press the first front surface 111 of the first blade 11, and when the male end connector 10 and the female end connector 20 are completely inserted into each other, the first blade 11 is deformed toward the first back surface 112, so that the free end of the first back surface 112 of the first blade 11 is pressed against the inner wall surface of the insertion groove 22, thereby preventing the first blade 11 from being excessively deformed to separate the second blade 21, i.e., limiting the elastic deformation between the first blade 11 and the second blade 21, so as to achieve the effect of surface-to-surface contact between the first front surface 111 and the second front surface 211, and by means of the structure of the above embodiment, the following benefits can be obtained:

1. the male end connector 10 and the female end connector 20 are connected in a double-blade butt joint manner (plate body structure with the same thickness), so that more power terminals can be arranged in a limited space, and the male end connector 10 and the female end connector 20 can increase the current value which can be borne by the first blade 11 and the second blade 21 by utilizing the surface-to-surface joint state of the first blade and the second blade, so that the size of the connector can be effectively reduced under the same rated current state;

2. the female end connector 20 is provided with the limiting strip 221 protruding in the insertion groove 22, the limiting strip 221 abuts against the second back surface 212 at the bottom of the insertion groove 22, and the limiting strip 221 and the second switch blade 21 form the allowable deformation included angle θ with the two surfaces that are not in contact with each other, the limiting strip 221 is used for abutting against the second back surface 212 of the second switch blade 21, so as to prevent the second switch blade 21 from being excessively deformed to separate the first switch blade 11, so that the first front surface 111 and the second front surface 211 can maintain surface-to-surface electrical connection, and the limiting strip 221 is used for blocking the second switch blade 21, so that the first switch blade 11 and the second switch blade 21 can still maintain surface-to-surface contact at the closer relative position, that is, the production rate can be improved, and the quality and yield can be achieved.

In an embodiment of the present invention, as shown in fig. 7 and 8, the male connector 10 penetrates the first blade 11 through the sleeve 12, and the female connector 20 penetrates the second blade 21 through the block 23, and the elasticity of the block 23 is higher than that of the sleeve 12, so that the second blade 21 has an elastic deformation amount larger than that of the first blade 11, as shown in fig. 10, the male connector 10 penetrates the first blade 11 through the sleeve 12, and the female connector 20 penetrates the second blade 21 through the block 23, and the length of the second blade 21 protruding from the block 23 is longer than that of the first blade 11 protruding from the sleeve 12, so that the second blade 21 has an elastic deformation amount larger than that of the first blade 11, and by the above structural features, the second blade 21 is elastically deformed before the first blade 11, and after the second blade 21 is pressed against the second blade 221, the elastic deformation amount of the second blade is prevented from being reduced, and the elastic deformation of the second blade 21 is prevented from being restricted by the restriction of the second blade 21, thereby preventing the second blade from being deformed and increasing the resistance of the second blade 21.

In another embodiment of the present invention, as shown in fig. 11, 12 and 13, a plurality of signal blades 16 are disposed through the sleeve body 12 of the male connector 10, and a plurality of square holes 243 are disposed on the base 24 of the female connector 20, so that a plurality of communication blades 29 pass through the base 24 and are disposed in the square holes 243, a stop strip 244 is disposed on a surface of the square hole 243 adjacent to the communication blades 29, the male connector 10 and the female connector 20 are butted to form an electrical connection between the signal blades 16 and the communication blades 29, and the signal blades 16 and the communication blades 29 are pressed against the stop strip 244 due to the mutual compression between the signal blades 16 and the communication blades 29, thereby limiting the elastic deformation between the signal blades 16 and the communication blades 29.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention; all equivalent changes and modifications made according to the scope of the claims of the present invention should be covered by the patent of the present invention.

Claims

1. A dual blade butt connector, comprising:

a male end connecting piece, which is convexly provided with at least one first knife switch, and the first knife switch is provided with a first front surface and a first back surface; and

the female end connecting piece is convexly provided with at least one second knife switch, the second knife switch is formed into a second front face and a second back face, the first knife switch and the second knife switch are of plate body structures with the same thickness, the second knife switch is arranged in an inserting groove, the inserting groove is convexly provided with a limiting strip on the second back face of the second knife switch, the limiting strip abuts against the second back face at the bottom of the inserting groove, two surfaces of the limiting strip, which are not contacted with the second back face, form an allowable deformation included angle, the first knife switch of the male end connecting piece is inserted into the inserting groove of the female end connecting piece to form extrusion connection of the first front face of the first knife switch and the second front face of the second knife switch, and the second knife switch is elastically deformed to abut against the limiting strip at the moment, so that the elastic deformation amount between the first knife switch and the second knife switch is limited.

2. The dual-blade butt connector as claimed in claim 1, wherein the male connector is a sleeve penetrating the first blade, and the female connector is a block penetrating the second blade, and the elasticity of the block is higher than that of the sleeve, so that the second blade has a larger elastic deformation than that of the first blade.

3. The double-blade butt connector as claimed in claim 1, wherein the male connector is a sleeve penetrating the first blade, the sleeve surrounds the first blade to form a ring, the female connector includes a block and a base, the block penetrates the second blade, the base is penetrated with the insertion slot, and one end of the base in the insertion slot is enlarged to form a positioning chamber, the block is fixed in the positioning chamber and pressed against an opening at one end of the insertion slot to form a bottom of the insertion slot, so as to position the position of the second blade relative to the position-limiting bar, and the female connector is inserted into the ring of the male connector through the base.

4. The butt connector of claim 3, wherein the sleeve has an external thread section formed on the surface of the ring at one end, and a male body is encapsulated at the other end of the sleeve, and the base has a female body encapsulated at one end of the block, and the female body is sleeved with a nut, and the female body has a protruding ring for blocking the nut, and the nut is locked on the external thread section.

5. The butt connector of claim 3, wherein the base is sleeved with a water stop ring, and a sharp ring is protruded from the opening periphery of the ring for pressing the water stop ring positively, thereby providing a leakproof effect between the base and the ring.

6. The dual-blade butt connector as claimed in claim 3, wherein the sleeve has a plurality of signal pins and the base has a plurality of through holes, a plurality of signal connecting rods are disposed at the through holes through the base, and the male connector and the female connector are butted to form electrical connections between the signal pins and the signal connecting rods.

7. The dual-blade butt connector as claimed in claim 3, wherein a plurality of signal blades are disposed through the sleeve of the male connector, and a plurality of square holes are disposed on the base of the female connector, so that a plurality of communication blades pass through the base and are disposed in the square holes, and a stop bar is protruded from one side of the square hole adjacent to the communication blades, so that the signal blades are electrically connected to the communication blades when the male connector is butted to the female connector, and the signal blades and the communication blades are pressed against each other by the mutual compression of the signal blades and the communication blades, thereby limiting the elastic deformation between the signal blades and the communication blades.

8. The dual-blade butt-type connector of claim 1, wherein the allowable deformation angle is an angle formed from a point where the limiting bar and the second blade contact each other to two points where the limiting bar and the second blade do not contact each other, and the allowable deformation angle is between 0.5 degrees and 1.5 degrees.

9. The dual-blade butt connector as claimed in claim 1, wherein the second blade pushes the first blade relatively, so that the first blade is pressed against the inner wall of the insertion groove at the free end of the first back surface, thereby pressing the first blade toward the second blade.

10. The dual-blade butt connector as claimed in claim 1, wherein the male connector penetrates the first blade through a sleeve, and the female connector penetrates the second blade through a block, and the length of the second blade protruding from the block is longer than the length of the first blade protruding from the sleeve, so that the second blade has a larger elastic deformation than the first blade.