CN217589561U

CN217589561U - Power supply connector

Info

Publication number: CN217589561U
Application number: CN202221521170.0U
Authority: CN
Inventors: 吴祝平; 包金平; 吴永发; 方志宏
Original assignee: Drapho Electronics Technology Co ltd
Current assignee: Drapho Electronics Technology Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-10-14
Anticipated expiration: 2032-06-17

Abstract

The utility model provides a power connector, include insulator, accept terminal group in insulator and cover the metal casing on insulator, insulator is equipped with a roof, a pair of lateral wall and is located the jack of roof below, metal casing be equipped with one cover in top cap on the roof and cover in a pair of side cap on the pair of lateral wall, the top cap is equipped with the hasp folded piece that the book formed downwards and the shell fragment that the downward sloping extends, the shell fragment downwardly extending passes roof and protruding income in the jack. Compared with the prior art, the utility model discloses an improve metal casing's structure, utilize the hasp tabs can realize fixed the combination better insulator for relation between them is firm more reliable, and simultaneously, metal casing's equipment is also very convenient.

Description

Power supply connector

Technical Field

The utility model relates to an electric connection field especially relates to a power connector.

Background

The power connector is a device commonly used in electronic equipment nowadays, and is often used on equipment such as notebook computers, servers and the like, most of the current electronic products are provided with direct current power connectors which are mainly used for transmitting direct current, for example, DC Jack type power connectors on notebook computers, because frequent plugging and unplugging are required, the reliability requirement of the power connectors is high, if the connection is loose or the plugging is not in place, stable power input cannot be easily provided, the existing power connectors generally adopt a needle-shaped power terminal and a grounding terminal to realize electrical plugging, the needle-shaped power terminal is used for transmitting current, the grounding terminal is used for realizing a grounding function, the structure is a structure commonly adopted by the current DC Jack type power connectors, and in order to provide better protection, a metal shell is assembled on the surface of the DC Jack type power connectors, the metal shell is very similar to the conventional USB type power connectors, in order to achieve fixed combination with an insulating body, the metal shell is generally required to be subjected to bending operation after being assembled on the insulating body, the metal shell is bent to clamp the insulating body downwards, and the complexity is increased to achieve the mutual positioning difficulty and the reliability of the insulating body.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a power connector to improve among the prior art metal casing connection stability, the not good problem of reliability.

In order to solve the technical problem, the utility model adopts the following technical scheme: a power connector comprises an insulating body, a terminal group contained in the insulating body and a metal shell covering the insulating body, wherein the insulating body is provided with a top wall, a pair of side walls and a jack located below the top wall, the metal shell is provided with a top cover covering the top wall and a pair of side covers covering the pair of side walls, the top cover is provided with a lock catch folding piece formed by folding downwards and a spring piece extending downwards, and the spring piece extends downwards to penetrate through the top wall and stretch into the jack.

Furthermore, the locking folding piece and the elastic sheet are integrally connected with the top cover, the locking folding piece is inserted into the top wall, and the two side edges of the locking folding piece are provided with the thorns.

Furthermore, the top wall is provided with two limiting holes for accommodating the elastic sheets and two clamping grooves for accommodating the lock catch folding sheets, the two clamping grooves are smaller than the limiting holes in size, and the two clamping grooves are respectively positioned at the left side and the right side of the limiting holes.

Furthermore, at least two creases are arranged on the elastic sheet.

Further, the catch flap is perpendicular to the top cover.

Further, the insulating body is further provided with a front end wall, the jack penetrates through the front end wall, and the front end wall is further provided with a limiting convex edge protruding out of the top wall and the side wall.

Furthermore, the terminal group comprises a needle-shaped power terminal and a grounding terminal, the power terminal is located in the jack and located under the elastic sheet, the grounding terminal is provided with a left grounding arm and a right grounding arm, and the left grounding arm and the right grounding arm are respectively located on the left side and the right side of the power terminal.

Furthermore, the front end of the left grounding arm is folded backwards to form a U-shaped connection arm and an elastic overlapping arm integrally extending backwards from the U-shaped connection arm.

Furthermore, the terminal group is also provided with a detection terminal positioned on one side of the power supply terminal, and the detection terminal is of a sheet structure and positioned between the left grounding arm and the power supply terminal.

Furthermore, a contact end in lap contact with the detection terminal is formed at the tail end of the elastic lap joint arm, and an elastic pressing piece opposite to the contact end is further arranged on the left grounding arm and protrudes towards the contact end.

Compared with the prior art, the utility model discloses an improve metal casing's structure, utilize the hasp tabs can realize fixed the combination better insulator for relation between them is firm more reliable, simultaneously metal casing's equipment is also very convenient.

Drawings

Fig. 1 is a front perspective view of the power connector of the present invention.

Fig. 2 is a perspective view of the back side of the power connector of the present invention.

Fig. 3 is a partially exploded view of the power connector of the present invention.

Fig. 4 is a schematic diagram of a terminal position of the power connector according to the present invention.

Fig. 5 is a top view of the terminal position relationship of the power connector of the present invention.

Fig. 6 is a cross-sectional view of the power connector of the present invention.

Fig. 7 is a perspective view of the power connector of the present invention with the bottom surface of the metal shell facing upward.

Detailed Description

Referring to fig. 1-7, the present invention provides a power connector 100 for soldering to a circuit board (not shown) and plugging with a pair of connectors (not shown), preferably, the power connector 100 can be a DC power connector 100, such as a DC Jack. The utility model discloses a power connector 100 includes: the structure of the present invention includes an insulative housing 10, a terminal set 20 housed in the insulative housing 10, and a metal shell 30 covering a surface of the insulative housing 10, wherein the specific structure of each component is described in detail below.

The insulating body 10 is rectangular and is provided with a top wall 11, a bottom wall 12, a pair of side walls 13, a front end wall 14 and a rear end wall 15, wherein the surface of the top wall 11 is provided with a plurality of clamping grooves 110 and limiting holes 111, the clamping grooves 110 are located on two sides of the limiting holes 111, and both the clamping grooves 110 and the limiting holes are used for being in snap fit with the metal shell 30, so that the metal shell 30 and the top wall 11 are reliably combined and fixed. A pair of slots 130 extending from top to bottom are formed in the surface of the side wall 13 for limiting and matching with the metal shell 30, the pair of slots 130 are distributed front and back, one of the slots 130 is close to the front end wall 14, the other one of the slots 130 is close to the rear end wall 15, and the pair of slots 130 are arranged in parallel, it should be noted that the top of the slot 130 penetrates through the surface of the top wall 11 upward, the bottom of the slot 130 is provided with an inclined surface 131, and the inclined surface 131 is located in the slot 130 and is inclined from top to bottom, as shown in fig. 3. The front end wall 14 is integrally connected to the top wall 11, the pair of side walls 13 and the bottom wall 12, a circular insertion hole 140 is formed in the surface of the front end wall 14, the insertion hole 140 is located between the pair of side walls 13 and is centrally located, the insertion hole 140 extends into the insulating body 10 from front to back, the insertion hole 140 is located right below the limiting hole 111, the limiting hole 111 and the insertion hole 140 are arranged in a penetrating manner, in addition, a stopping wall 141 is further arranged in the insertion hole 140, the stopping wall 141 penetrates the rear end wall 15 backwards so that the power terminals 22 can be inserted into the insulating body 10 from back to front, meanwhile, in order to limit the metal shell 30, the front end wall 14 is further provided with a limiting convex edge 142 protruding from the top wall 11 and the side walls 13, the rear end wall 15 is arranged in a parallel with the front end wall 14, a mounting groove 150 for the terminal group 20 to be inserted is formed in the surface of the rear end wall 15, so that the terminal group 20 can be inserted into the insulating body 10 from back to front, the mounting groove 150 includes an inverted U-shaped arm 151 and a hole 152, a hole 153 is located inside the U-shaped insertion hole 151 and a receiving portion 153 located inside the U-shaped connection arm 2105, and a receiving portion 153 located inside the limiting arm 210 is located inside the U-shaped connection portion of the insertion hole 151. The bottom wall 12 of the insulating body 10 is provided with a flange portion 121 protruding rearward, the flange portion 121 protrudes rearward from the rear end wall 15, and the flange portion 121 is provided with a plurality of positioning slots 122 for clamping and positioning the soldering arm 2112 of the grounding terminal 21, the leg portion 232 of the detecting terminal 23 and the mounting leg 221 of the power terminal 22.

As shown in fig. 4, the terminal set 20 includes a ground terminal 21, a needle-shaped power terminal 22, and a detection terminal 23 located at one side of the power terminal 22.

The ground terminal 21 has a left ground arm 210, a right ground arm 211 and a bridging arm 212, the left ground arm 210 and the right ground arm 211 are respectively located at the left and right sides of the power terminal 22, and the bridging arm 212 is located above the power terminal 22 and the detection terminal 23, and the bridging arm 212 is horizontally disposed, and the left and right ends thereof are respectively connected with the left ground arm 210 and the right ground arm 211 integrally, thereby forming an inverted U-shaped structure for matching with the inverted U-shaped slot 151, wherein the left ground arm 210 has a sheet main body 2101 extending forward from the rear and a resilient bridging arm 2102 folded back and extending from the front end of the sheet main body 2101, the sheet main body 2101 is provided with a through hole 2103 and a resilient tab 2104 located in the through hole 2103, the tab 2104 protrudes toward the protruding tab 22, the connection of the resilient bridging arm 2102 and the sheet main body 2101 is provided with a U-shaped bridging arm 2105, the resilient bridging arm 2105 is connected with the U-shaped bridging arm 2105 and the resilient tab 2106 is located in the contact direction of the socket 2107, and the resilient tab 2106 is provided with a contact stop tab 2106, and the tab 2106 is located in the front and the resilient tab 2107, the resilient tab 2104 is provided with a contact stop tab 2106, and a contact terminal V7 is located in the resilient tab 2104 capable of contacting the contact with a contact pin 2106, and a contact stop tab 2104 located in the resilient tab 2104 capable of contacting the contact with a contact pin 2107, and a contact pin 2106 is provided with a contact pin 2104 capable of contacting the resilient tab 2104 located in the contact pin 2107; the right grounding arm 211 is provided with a V-shaped extension arm 2110, the V-shaped extension arm 2110 extends from back to front and is provided with a right contact protrusion 2111 protruding into the insertion hole 140, the right contact protrusion 2111 and the left contact protrusion 2108 are arranged opposite to each other and are respectively located at the left side and the right side of the power terminal 22, and the rear ends of the left grounding arm 210 and the right grounding arm 211 are provided with welding arms 2112 extending downwards.

The power terminal 22 is located between the left grounding arm 210 and the right grounding arm 211, and is provided with a horizontally arranged needle-shaped docking arm 220 and a mounting pin 221 which is bent downwards and extends from the rear end of the docking arm 220, the front end of the docking arm 220 is provided with a circular arc-shaped head 222, so that the docking process is better and smooth, and the mounting pin 221 is used for being welded and mounted on a circuit board. In addition, the docking arm 220 is located between the left contact protrusion 2108 and the right contact protrusion 2111, and is equidistant from the left contact protrusion 2108 and the right contact protrusion 2111.

The detection terminal 23 is located at one side of the power terminal 22 and is closely attached to one side surface of the stop wall 141 (see fig. 6), specifically, the detection terminal 23 is located between the power terminal 22 and the elastic overlapping arm 2102 and is constantly in contact with the contact tail end 2107 of the elastic overlapping arm 2102 in a normal state, the detection terminal 23 is also in a sheet structure and is provided with a contact piece 231 which is vertically arranged and a leg portion 232 which extends downwards from the rear end of the contact piece 231, the contact piece 231 is in overlapping contact with the contact tail end 2107, and the leg portion 232 is used for being soldered to a circuit board.

The metal shell 30 is U-shaped, and covers the insulating body 10 and covers the surfaces of the top wall 11 and the pair of side walls 13, the metal shell 30 is provided with a top cover 31 and a pair of side covers 32, the top cover 31 covers the top wall 11, the side covers 32 cover the side walls 13, the top cover 31 is provided with a lock catch folding piece 33 which is folded downwards and an elastic piece 34 which extends downwards, the lock catch folding piece 33 is perpendicular to the top cover 31 and is inserted into the clamping groove 110, protruding thorns 35 are formed on two sides of the lock catch folding piece 33 to strengthen the fixation with the insulating body 10, the number of the lock catch folding pieces 33 is preferably two, the two lock catch folding pieces are smaller than the limiting hole 111 and are respectively located on the left side and the right side of the elastic piece 34, the elastic piece 34 vertically corresponds to the limiting hole 111 on the insulating body 10, and extends into the insertion hole 140 through the limiting hole 111, and preferably, the elastic piece 34 is provided with at least two folds S, so that the elastic piece 34 has better elasticity and is not easy to damage. The side cover 32 is provided with abutting pieces 36 correspondingly matched with the slots 130, the number of the abutting pieces 36 is the same as that of the slots 130, the positions of the abutting pieces 36 are corresponding to those of the slots 130, the bottom end of the abutting pieces 36 is integrally connected with the side cover 32, the top end is a free tail end, when the metal shell 30 is installed on the insulating body 10 from top to bottom, the abutting pieces 36 are clamped in the slots 130 and slide along the slots 130 from top to bottom until the abutting pieces abut against the inclined surfaces 131, and then the assembly is completed.

In the non-plugging state, the detecting terminal 23 of the power connector 100 of the present invention always maintains the lap joint connection with the left grounding arm 210, and after the butt-end connector (not shown) is plugged into the insertion hole 140, the butt-end connector (not shown) forces the elastic lap-joint arm 2102 of the left grounding arm 210 to deform and displace outward in the plugging process, so that the contact end 2107 of the elastic lap-joint arm 2102 is separated from the lap joint with the detecting terminal 23, thereby triggering the detecting signal, thereby indicating that the butt-end connector (not shown) is plugged in place.

The utility model discloses an improve ground terminal 21's structure, set up the U type that the backward inflection formed at its front end and link up arm 2105 and link up the elasticity overlap joint arm 2102 that the arm 2105 extends to a body from U type backward, borrow by the U type and link up the toughness and the resilience performance that arm 2105 can improve elasticity overlap joint arm 2102, thereby make elasticity overlap joint arm 2102 possess more reliable, more stable contact performance, can with listen more stable overlap joint of terminal 23.

Additionally, the utility model discloses still through the structure that improves metal casing 30, utilize hasp tabs 33 can realize fixed the combination better insulator 10 for relation between them is more firm reliable, and simultaneously, metal casing 30's equipment is also very convenient.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the technical solution of the present invention without departing from the scope of the technical solution of the present invention.

Claims

1. The utility model provides a power connector, includes insulator, accepts terminal group in insulator and covers the metal casing on insulator, insulator is equipped with a roof, a pair of lateral wall and is located the jack of roof below, metal casing is equipped with one and covers top cap on the roof and cover a pair of side cap on a pair of lateral wall, its characterized in that: the top cover is provided with a lock catch folding piece formed by folding downwards and an elastic piece extending downwards, and the elastic piece extends downwards to extend through the top wall and protrude into the jack.

2. The power connector of claim 1, wherein: the locking buckle folding piece and the elastic sheet are integrally connected with the top cover, the locking buckle folding piece is inserted into the top wall, and the two side edges of the locking buckle folding piece are provided with the thorns.

3. A power connector as claimed in claim 2, wherein: the top wall is provided with two limiting holes for accommodating the elastic sheets and two clamping grooves for accommodating the lock catch folding sheets, the two clamping grooves are smaller than the limiting holes in size, and the two clamping grooves are respectively positioned at the left side and the right side of the limiting holes.

4. A power connector as claimed in claim 3, wherein: the elastic sheet is provided with at least two creases.

5. The power connector of claim 4, wherein: the snap flap is perpendicular to the top cover.

6. The power connector of claim 5, wherein: the insulating body is further provided with a front end wall, the jack penetrates through the front end wall, and the front end wall is further provided with a limiting convex edge protruding out of the top wall and the side wall.

7. The power connector of claim 6, wherein: the terminal group comprises a needle-shaped power terminal and a grounding terminal, the power terminal is positioned in the jack and under the elastic sheet, the grounding terminal is provided with a left grounding arm and a right grounding arm, and the left grounding arm and the right grounding arm are respectively positioned at the left side and the right side of the power terminal.

8. A power connector as claimed in claim 7, wherein: the front end of the left grounding arm is folded backwards to form a U-shaped connection arm and an elastic overlapping arm integrally extending backwards from the U-shaped connection arm.

9. The power connector of claim 8, wherein: the terminal group is also provided with a detection terminal positioned on one side of the power supply terminal, and the detection terminal is of a sheet structure and positioned between the left grounding arm and the power supply terminal.

10. The power connector of claim 9, wherein: the tail end of the elastic lapping arm is provided with a contact tail end which is lapped and contacted with the detection terminal, the left grounding arm is also provided with an elastic pressing sheet which is arranged opposite to the contact tail end, and the elastic pressing sheet extends towards the contact tail end in a protruding mode.