CN110534960B

CN110534960B - Power supply connector

Info

Publication number: CN110534960B
Application number: CN201910832958.XA
Authority: CN
Inventors: 刘秋顺; 田建军
Original assignee: ASAP Technology Jiangxi Co Ltd
Current assignee: ASAP Technology Jiangxi Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2022-02-01
Anticipated expiration: 2039-09-04
Also published as: CN110534960A

Abstract

The invention relates to the technical field of conductive connection and discloses a power connector. The power connector comprises a front shell, a wire fixing piece and a rear shell, wherein the wire fixing piece is inserted into the front shell, the wire fixing piece penetrates through the rear shell, the rear shell is connected with the front shell, the structural strength of the power connector is increased by arranging the rear shell, the power connector cannot be broken when the power connector is inserted and pulled for a long time, the risk of electric leakage and electric shock is reduced, and the service life is prolonged; the rear shell is internally provided with a positioning part for fixing the wire fixing piece on the front shell, and when the power connector is plugged, the positioning part can effectively prevent the wire fixing piece from changing relative to the position of the front shell, so that the problem of poor contact caused by the backward movement of the hardware terminal when the hardware terminal is connected with other equipment is avoided.

Description

Power supply connector

Technical Field

The invention relates to the technical field of conductive connection, in particular to a power connector.

Background

In the prior art, a C7 type power connector includes a front end and a rear end, and usually, a polyvinyl chloride material is coated between the front end and the rear end of the power connector, which is a soft material, so that it is not easy to effectively fix internal components (such as hardware terminals), and when the power connector is plugged and pulled for a long time, the internal components are easily retracted, and the problem of poor contact occurs when the power connector is connected with other devices. Under the condition that the power connector is worn seriously by using, the front end and the rear end can be separated, so that the power connector is broken, the risk of electric leakage and electric shock exists, the structural strength is poor, and the service life is short.

Disclosure of Invention

The invention aims to provide a power connector, which increases the structural strength of the power connector, reduces the risk of electric leakage and electric shock and prolongs the service life.

In order to achieve the purpose, the invention adopts the following technical scheme:

a power connector comprises a front shell, a wire fixing piece and a rear shell, wherein the wire fixing piece is inserted into the front shell in an inserting mode, the wire fixing piece penetrates through the rear shell, and the rear shell is connected with the front shell.

Preferably, a positioning portion for fixing the wire fixing member to the front case is provided at an inner side of the rear case.

Preferably, the rear shell is provided with a trapezoidal hole, the trapezoidal hole comprises a first hole and a second hole, and a first step surface is formed between the first hole and the second hole.

Preferably, the front shell and the end connected with the rear shell are provided with a first boss along the circumferential direction, the hole wall of the first hole is attached to the circumferential side wall of the first boss, and the end face of the first boss is welded with the first step face.

Preferably, the front shell is provided with a first buckling part, the first buckling part comprises a convex block or a groove, a second buckling part corresponding to the first buckling part is arranged on the hole wall of the second hole, and the second buckling part comprises a groove or a convex block.

Preferably, a plurality of ultrasonic welding lines are arranged on the end face of the first boss at intervals along the circumferential direction.

Preferably, trapezoidal hole still includes the third hole, location portion includes the second step face, the second step face form in the second hole with between the third hole, the wire rod mounting include the terminal portion of holding and with the wire rod outgoing line portion that the terminal portion of holding is connected, the wire rod outgoing line portion with the junction of terminal portion of holding is equipped with the second boss along circumference, the pore wall in second hole with the laminating of the circumference lateral wall of second boss, the terminal surface of second boss with the laminating of second step face.

Preferably, the rear shell is circular in cross section, and a slope is arranged on one side of the rear shell, which is far away from the front shell.

Preferably, the front shell is made of polycarbonate.

Preferably, the rear shell is made of polycarbonate.

The invention has the beneficial effects that:

one end of the wire fixing piece is inserted into the front shell, the other end of the wire fixing piece penetrates through the rear shell, the rear shell is connected with the front shell, the structural strength of the power connector is improved due to the arrangement of the rear shell, the power connector cannot be broken when the wire fixing piece is inserted and pulled for a long time, the risk of electric leakage and electric shock is reduced, and the service life is prolonged; be equipped with the location portion that is used for fixing a position the wire rod mounting in the backshell, when plug power connector, location portion can effectively prevent the position of wire rod mounting for preceding shell from changing, and then has avoided parts such as five metals terminal to retreat and lead to appearing contact failure problem when being connected with other equipment.

Drawings

Fig. 1 is a schematic structural diagram of a power connector according to an embodiment of the invention;

FIG. 2 is an exploded view of a power connector according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a wire fixing member according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a rear housing according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a front housing according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a power connector according to an embodiment of the invention plugged into a terminal.

In the figure:

1. a front housing; 11. a first boss; 111. a first plane; 12. a first buckling part; 13. ultrasonic welding lines;

2. a wire fixing member; 21. a terminal accommodating portion; 22. a wire outgoing part; 23. a second boss;

3. a rear housing; 31. a first hole; 311. a second plane; 32. a second hole; 33. a third aperture; 34. a first step surface; 35. a second step surface; 36. a bevel; 37. a second fastening part;

4. a hardware terminal;

5. and (3) wire rods.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1, the present embodiment provides a power connector, which is a C7 type power connector and is used for connecting with a terminal device.

The power connector comprises a front shell 1, a wire fixing piece 2 and a rear shell 3, wherein the wire fixing piece 2 is inserted into the front shell 1, the wire fixing piece 2 penetrates through the rear shell 3, the rear shell 3 is connected with the front shell 1, the structural strength of the power connector is increased by arranging the rear shell 3, the power connector cannot be cracked when being inserted and pulled for a long time, the risk of electric leakage and electric shock is reduced, and the service life of the power connector is prolonged; the inside of backshell 3 is equipped with the location portion that is used for being fixed in preceding shell 1 with wire rod mounting 2, and when plug power connector, location portion can effectively prevent wire rod mounting 2 to change for preceding shell 1's position, and then has avoided parts such as five metals terminal 4 to retreat and the problem that contact failure appears when leading to being connected with other equipment.

As shown in fig. 2, in the present embodiment, a hardware terminal 4 is provided in the wire fixing member 2, and the hardware terminal 4 is connected to one end of the wire 5. The wire fixing member 2 includes a terminal accommodating portion 21 and a wire outgoing portion 22, the wire outgoing portion 22 is a hollow cylindrical structure, an accommodating cavity for accommodating the hardware terminal 4 is formed in the terminal accommodating portion 21, and the wire outgoing portion 22 is communicated with the accommodating cavity in the terminal accommodating portion 21. During assembly, the hardware terminal 4 is inserted into the accommodating cavity of the terminal accommodating portion 21, and the other end of the wire 5 is inserted into the wire outlet portion 22. The front shell 1 is provided with a cavity for accommodating the terminal accommodating part 21, the terminal accommodating part 21 of the wire fixing part 2 is inserted into the cavity of the front shell 1, the wire outgoing part 22 and the wire 5 penetrate through the rear shell 3, the rear shell 3 is connected with the front shell 1, and the wire fixing part 2 is positioned on the front shell 1. When the wire of the power connector is used or bent, the arranged wire outlet part 22 can effectively protect the wire 5 from being damaged, thereby prolonging the service life of the power connector and improving the electrical installation performance of the power connector.

As shown in fig. 3, a second boss 23 is circumferentially disposed at a connection position of the terminal accommodating portion 21 and the wire outgoing portion 22, and after the terminal accommodating portion 21 is inserted into the cavity of the front housing 1, an end surface of one side of the second boss 23 is attached to an end surface of the front housing 1, so that the installation of the wire fixing member 2 is limited.

In this embodiment, the material of the wire fixing member 2 is TPE, and the terminal accommodating portion 21 and the wire outlet portion 22 of the wire fixing member 2 are integrally connected, so that the structural strength of the wire fixing member 2 is improved. The TPE material is a thermoplastic elastomer material, and has the characteristics of high strength, high resilience and injection molding processing.

In the present embodiment, as shown in fig. 4, the rear case 3 is opened with trapezoidal holes including a first hole 31, a second hole 32, and a third hole 33, a first step surface 34 is formed between the first hole 31 and the second hole 32, and a second step surface 35 is formed between the second hole 32 and the third hole 33.

With reference to fig. 3 and 4, when the rear shell 3 is connected to the front shell 1, the hole wall of the second hole 32 is attached to the circumferential side wall of the second boss 23, so that the sealing performance is good; the positioning part comprises a second step surface 35, and the end surface of one side, opposite to the front shell 1, of the second boss 23 is attached to the second step surface 35. After the rear shell 3 is fixedly connected to the front shell 1, the second step surface 35 has a certain limiting effect on the fixing piece of the wire 5, and the problem that poor contact occurs when the hardware terminal 4 retreats to connect the power connector with other equipment under the condition of long-term plugging is effectively avoided.

In this embodiment, the cross-section of the rear housing 3 is circular, and when the rear housing 3 is connected to the front housing 1, the rear housing 3 is fixed to the front housing 1, so that the connection strength between the rear housing 3 and the front housing 1 is improved. Specifically, with reference to fig. 4 and 5, a first boss 11 is circumferentially disposed at one end of the front shell 1 connected to the rear shell 3, and when the rear shell 3 is connected to the front shell 1, a hole wall of the first hole 31 of the rear shell 3 is attached to a circumferential side wall of the first boss 11, and an end surface of the first boss 11 is welded to the first step surface 34.

In the present embodiment, a plurality of ultrasonic welding lines 13 are provided at intervals in the circumferential direction on the end surface of the first boss 11, and the end surface of the first boss 11 and the first step surface 34 are connected by ultrasonic welding, which improves the connection strength between the front case 1 and the rear case 3.

Because there is wire 5 to stretch out in one side of backshell 3, if preceding shell 1 and backshell 3 be connected whole adoption ultrasonic wave and be connected, then the wire rod can't be dodged to the ultrasonic wave tool, consequently, shell 1 and backshell 3 before adopting the mode of lock in the position that the ultrasonic wave tool can't dodge. In this embodiment, with reference to fig. 4 and 5, the end surface of the first boss 11 of the front shell 1 is provided with a first buckling portion 12, the first buckling portion 12 includes a convex block, the hole wall of the second hole 32 of the rear shell 3 is provided with a second buckling portion 37 corresponding to the first buckling portion 12, and the second buckling portion 37 is a concave groove. The structure is simple and the assembly is convenient. In other embodiments, the first engaging portion 12 can also be a groove, and the second engaging portion 37 can be a protrusion that is coupled with the groove, which is not limited herein. The connection of the front shell 1 and the rear shell 3 is connected in a buckling and ultrasonic welding mode, so that the connection strength of the front shell 1 and the rear shell 3 is further improved.

In this embodiment, the protrusion is an L-shaped protrusion, one end of the protrusion is connected to the lower edge of the first protrusion 11, and the other end of the protrusion faces downward to be inserted into the groove.

In order to facilitate rapid insertion of the protruding block into the groove, a first plane 111 is disposed at a position of the outer peripheral side wall of the first boss 11 opposite to the first buckling portion 12, a second plane 311 attached to the first plane 111 is disposed on the hole wall of the first hole 31, and the first plane 111 and the second plane 311 are used for positioning, so that the assembly speed of the front shell 1 and the rear shell 3 is increased.

In other embodiments, the front shell 1 and the rear shell 3 may be connected by other connecting structures instead of being fastened, and then the front shell 1 and the rear shell 3 are completely connected by ultrasonic welding. The front case 1 and the rear case 3 may be connected by all of the snap-fit connection or all of the fusion-connection, which is not limited herein.

The front shell 1 and the rear shell 3 are made of polycarbonate which is hard, so that the whole power connector can be effectively supported and cannot be deformed due to a thin design structure, the structural strength of a product is improved, the damage rate of the power connector under a long-term plugging condition is reduced, the safety performance requirement of the product is met, the use safety of the power connector is improved, and the whole power connector is more attractive.

As shown in fig. 6, an inclined plane 36 is disposed on one side of the rear housing 3 away from the front housing 1, and after the power connector is plugged into another device, the inclined plane 36 exposed outside the power connector is flush with the surface of the device, so that seamless connection between the power connector and the device is realized, and the aesthetic property is improved. The thickness of the rear shell 3 is gradually reduced due to the arrangement of the inclined plane 36, the rear shell 3 is made of polycarbonate, the processing of the inclined plane 36 can be realized, the structural strength of the rear shell 3 can be further met, and a power connector made of polyvinyl chloride in the prior art is difficult to realize the processing of the inclined plane 36 and has better strength.

The slope of the slope 36 is the same as the slope of the surface of the device, and if the surface of the device is a plane, the exposed side of the rear case 1 is also set to be a plane, which is not limited herein.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A power connector is characterized by comprising a front shell (1), a wire fixing piece (2) and a rear shell (3), a hardware terminal (4) is arranged in the wire fixing piece (2), the hardware terminal (4) is connected with one end of a wire (5), the wire fixing piece (2) is inserted in the front shell (1), the wire fixing piece (2) and the wire (5) penetrate through the rear shell (3), the rear shell (3) is connected with one end of the front shell (1), the rear shell (3) is provided with a trapezoidal hole, the trapezoidal hole comprises a first hole (31), a first boss (11) is arranged at one end of the front shell (1) connected with the rear shell (3) along the circumferential direction, the hole wall of the first hole (31) is attached to the circumferential side wall of the first boss (11), the inner side of the rear shell (3) is provided with a positioning part for fixing the wire fixing piece (2) on the front shell (1).

2. The power connector of claim 1, wherein the trapezoidal bore further comprises a second bore (32), and a first step surface (34) is formed between the first bore (31) and the second bore (32).

3. A power supply connector as claimed in claim 2, characterized in that the end face of the first boss (11) is fused to the first step face (34).

4. A power supply connector as claimed in claim 2, characterized in that the front shell (1) is provided with a first fastening portion (12), the first fastening portion (12) comprises a projection or a groove, a second fastening portion (37) corresponding to the first fastening portion (12) is provided on the wall of the second hole (32), and the second fastening portion (37) comprises a groove or a projection.

5. A power supply connector as claimed in claim 3, characterised in that the end face of the first boss (11) is provided with a plurality of ultrasonic weld lines (13) at circumferentially spaced intervals.

6. The power supply connector according to claim 2, wherein the trapezoidal hole further includes a third hole (33), the positioning portion includes a second step surface (35), the second step surface (35) is formed between the second hole (32) and the third hole (33), the wire fixing member (2) includes a terminal accommodating portion (21) and a wire outgoing portion (22) connected to the terminal accommodating portion (21), a second boss (23) is provided at a connection portion of the wire outgoing portion (22) and the terminal accommodating portion (21) in a circumferential direction, a hole wall of the second hole (32) is fitted to a circumferential side wall of the second boss (23), and an end face of the second boss (23) is fitted to the second step surface (35).

7. A supply connector as claimed in claim 1, characterized in that the rear housing (3) is circular in cross-section, and that a side of the rear housing (3) facing away from the front housing (1) is provided with a ramp (36).

8. A power supply connector as claimed in claim 1, characterized in that the front shell (1) is made of polycarbonate.

9. A supply connector as claimed in claim 1, characterized in that the rear shell (3) is made of polycarbonate.