CN211719802U

CN211719802U - Welding-free wire breaking terminal

Info

Publication number: CN211719802U
Application number: CN202020124680.9U
Authority: CN
Inventors: 欧阳欣; 李立生
Original assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-20
Anticipated expiration: 2030-01-19

Abstract

The utility model provides a broken line terminal of welding-free belongs to connecting device technical field, include: terminal body and elastic force arm. The terminal body is used for being welded and fixed with the PCB; the terminal body is provided with an accommodating groove, and the bottom of the accommodating groove is provided with an agnail; the elastic force arm is fixedly connected with the terminal body; the elastic arm is provided with a reverse-buckling elastic sheet which is used for abutting against the peripheral surface of the power line to compress and fix the power line in the holding tank. The utility model provides a pair of exempt from to weld broken string terminal, weld earlier on the PCB board terminal body, then press the power cord to the holding tank on the terminal body in, make the insulating layer that is located the barb puncture power cord of holding tank bottom to with the interior metal wire contact of power cord. With the help of its own elasticity, the elastic force arm with terminal body fixed connection compresses tightly the back-off shell fragment on the outer peripheral face of power cord to the realization is fixed compressing tightly of power cord, makes between power cord and the broken string terminal be connected more firmly.

Description

Welding-free wire breaking terminal

Technical Field

The utility model belongs to the technical field of connecting device, more specifically say, relate to a broken line terminal of welding exempts from.

Background

The aluminum substrate (PCB) of the light source of the LED lamp is usually directly connected with the power line in a soldering mode, the welding mode is easy to scald the light source, and the light beads are damaged, so that the lighting effect of the whole lamp is affected, and the operating personnel is required to have higher operation proficiency level, but the phenomena of insufficient soldering, short circuit and the like are very easy to occur in the welding operation process, so that the quality of the whole lamp is abnormal. In order to solve the problems, the connection between the PCB and the power line is mostly completed by adopting a wire breaking terminal at present, but the existing wire breaking terminal has the problem of insecure power line connection.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an exempt from to weld broken line terminal aims at solving current broken line terminal and has the insecure problem of power cord connection.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a welding-free wire breaking terminal, including:

the terminal body is used for being welded and fixed with the PCB; the terminal body is provided with an accommodating groove, and the bottom of the accommodating groove is provided with an agnail; and

the elastic force arm is fixedly connected with the terminal body; the elastic force arm is provided with a reverse-buckling elastic sheet, and the reverse-buckling elastic sheet is used for being abutted against the outer peripheral surface of the power line to tightly press and fix the power line in the accommodating groove.

As another embodiment of this application, the quantity of barb is two at least, and follows the length direction of holding tank evenly arranges.

As another embodiment of this application, the barb is triangle-shaped, just the thickness direction of barb with the length direction of holding tank is perpendicular.

As another embodiment of the present application, the height of the barb is greater than the thickness of the insulating layer of the power line and less than the radius of the power line.

As another embodiment of this application, the elastic force arm the barb with terminal body integrated into one piece.

As another embodiment of the present application, a protrusion protruding inward is disposed in the middle of the elastic arm; the protruding part is located the side of back-off shell fragment, and the distance between the inside wall of protruding part and the terminal body is less than the diameter of power cord.

As another embodiment of the present application, the free end of the reversed elastic sheet is a circular arc surface.

As another embodiment of the application, the free end of the inverted elastic sheet is provided with a non-slip mat, and the outer surface of the non-slip mat is provided with non-slip salient points.

As another embodiment of the present application, a pad is disposed on an outer side surface of the terminal body.

As another embodiment of the present application, the number of the pads is plural and is uniformly arranged along a length direction of the terminal body.

The utility model provides a pair of exempt from to weld broken string terminal's beneficial effect lies in: compared with the prior art, the utility model relates to an exempt from to weld broken string terminal, weld earlier on the PCB board terminal body, then press the power cord to the holding tank on the terminal body in, make the insulating layer that is located the barb puncture power cord of holding tank bottom to with the interior metal wire contact of power cord, thereby realize that the power cord is connected with the electricity of PCB board. With the help of its own elasticity, the elastic force arm with terminal body fixed connection compresses tightly the back-off shell fragment on the outer peripheral face of power cord to the realization is fixed compressing tightly of power cord, makes between power cord and the broken string terminal be connected more firmly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of an assembly structure of a welding-free wire breaking terminal according to a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a welding-free wire-breaking terminal according to a first embodiment of the present invention;

fig. 3 is a schematic perspective view of a welding-free wire-breaking terminal according to a first embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of a reverse-buckled elastic sheet according to an embodiment of the present invention.

In the figure: 1. a terminal body; 101. accommodating grooves; 102. a barb; 103. heat dissipation holes; 104. a pad; 2. an elastic arm of force; 201. reversely buckling the elastic sheet; 202. a boss portion; 203. a non-slip mat; 204. anti-skid bumps; 3. a PCB board; 4. a power line.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2, a welding-free wire breaking terminal according to the present invention will be described. The welding-free wire breaking terminal comprises: the terminal comprises a terminal body 1 and an elastic arm 2. The terminal body 1 is used for being welded and fixed with the PCB 3; the terminal body 1 is provided with an accommodating groove 101, and the bottom of the accommodating groove 101 is provided with an agnail 102; the elastic force arm 2 is fixedly connected with the terminal body 1; the elastic arm 2 is provided with a reverse-buckling elastic sheet 201, and the reverse-buckling elastic sheet 201 is used for abutting against the peripheral surface of the power line 4 to tightly press and fix the power line 4 in the accommodating groove 101.

The utility model provides a pair of exempt from to weld broken string terminal compares with prior art, weld fixation on PCB board 3 in advance with terminal body 1, then presses power cord 4 to the holding tank 101 on terminal body 1 in, makes barb 102 that is located holding tank 101 bottom puncture power cord 4's insulating layer to with the metal wire contact in power cord 4, thereby realize that power cord 4 and PCB board 3's electricity is connected. With the help of its own elasticity, the elastic force arm 2 with 1 fixed connection of terminal body compresses tightly back-off shell fragment 201 on the outer peripheral face of power cord 4 to the realization is fixed to compressing tightly of power cord 4, makes power cord 4 and broken line terminal between be connected more firmly.

In this embodiment, before installing the light pearl on PCB, earlier with terminal body 1 welded fastening on PCB board 3, thereby can avoid when welded fastening terminal body 1, thereby cause the illuminating effect of damage influence whole lamp to the light pearl. The solder-free broken terminal is already fixed to the corresponding position of the PCB board 3 when the power supply line 4 is mounted. Because the elastic force arm 2 has certain elasticity, when the power cord 4 is installed, the elastic force arm 2 can be driven to generate certain deformation, so that the distance between the inverted elastic sheet 201 and the barb 102 is changed, and the power cord 4 can smoothly enter the accommodating groove 101. When needs are dismantled power cord 4, only need drive the elastic force arm 2 and to the lateral buckling to drive back-off shell fragment 201 and power cord 4 separation and keep away from power cord 4, provide sufficient dismouting space for power cord 4, make power cord 4 can be fast, convenient take off from barb 102. The terminal body 1 is of a U-shaped structure, the opening of the terminal body is upward, and the elastic force arm 2 is located on the side wall of the U-shaped structure. The terminal body 1 is made of a metal thin plate by bending.

As a specific embodiment of the welding-free wire-breaking terminal provided by the present invention, please refer to fig. 3, the number of the barbs 102 is at least two, and the barbs are uniformly arranged along the length direction of the accommodating groove 101. In this embodiment, the barb 102 not only serves to connect the power line 4, but also serves to limit the power line 4. Since the barb 102 pierces the insulating layer of the power cord 4 and protrudes into the inside of the power cord 4, the movement of the power cord 4 in the horizontal direction is restricted. The length direction of the accommodation groove 101 is parallel to the axial direction of the power cord 4. A plurality of barbs 102 are arranged along the length direction of the accommodating groove 101, on one hand, the frictional resistance between the barbs 102 and the power line 4 is increased, the firmness of connection between the barbs 102 and the power line 4 is improved, on the other hand, the reliability of communication between the power line 4 and the PCB board 3 is ensured, and even if one of the barbs 102 fails to contact with a metal wire in the power line 4, the power line 4 and the PCB board 3 can still be normally communicated with each other.

As a specific embodiment of the welding-free wire-breaking terminal provided by the present invention, please refer to fig. 3, the barb 102 is triangular, and the thickness direction thereof is perpendicular to the length square of the accommodating groove 101. In this embodiment, the barbs 102 are isosceles triangles, and the vertex angles of the isosceles triangles are right angles. The top edge of the barb 102 is perpendicular to the axial direction of the power cord 4, and at this time, when the power cord 4 is displaced along the axial direction thereof, the puncture hole formed on the power cord 4 by the barb 102 is not enlarged, so that good limitation on the power cord 4 can be realized. However, when the top edge of the barb 102 is parallel to the axial direction of the power cord 4 (i.e. the cutting edge of the barb 102 is parallel to the axial direction of the power cord 4), the puncture opening will become longer gradually as the power cord 4 moves along the axial direction of the power cord 4, thereby causing a relative displacement between the power cord 4 and the broken terminal.

As a specific embodiment of the welding-free wire-breaking terminal provided by the present invention, please refer to fig. 2, the height of the barb 102 is greater than the thickness of the insulating layer of the power line 4 and smaller than the radius of the power line 4. In this embodiment, since the height of the barb 102 is greater than the thickness of the insulating layer of the power line 4, when the power line 4 is pressed into the accommodating groove 101, the barb 102 can be ensured to pass through the insulating layer of the power line 4 and contact with the metal wire in the power line 4, and meanwhile, the barb 102 is prevented from cutting off the metal wire in the power line 4 to cause disconnection.

As a specific embodiment of the welding-free wire-breaking terminal provided by the present invention, please refer to fig. 3, the elastic force arm 2, the barb 102 and the terminal body 1 are integrally formed. In this embodiment, the elastic force arm 2, barb 102 and terminal body 1, the accessible is with the sheet metal through blanking and bending integrated into one piece, can make overall structure's stability better, has reduced the part, avoids loaded down with trivial details dismouting process, and no waste material produces in the production manufacturing process simultaneously, has saved the garbage collection process. The forming process of the barb 102 is as follows: firstly, the outline of two edges of a barb 102 is punched on a thin plate, and then the thin plate is bent to one side by 90 degrees to finally form a barb 102 structure; at the same time of forming the barb 102, a through hole with the same contour as that of the barb 102 is formed at one side of the barb 102, a large amount of heat is easily generated at the connection position of the barb 102 and the power line 4 in a power-on state, the through hole can be used as a heat dissipation hole 103, and cooling air can cool the barb 102 and the power line 4 through the heat dissipation hole 103.

As a specific embodiment of the welding-free wire-breaking terminal provided by the present invention, please refer to fig. 3, a protrusion 202 protruding inward is disposed in the middle of the elastic force arm 2; the protrusion 202 is located on the side of the reversed spring plate 201, and the distance between the protrusion 202 and the inner side wall of the terminal body 1 is smaller than the diameter of the power line 4. In this embodiment, back-off shell fragment 201 adopts the integrated into one piece structure with the elastic force arm 2, and the certain angle of buckling is punched and buckled at the intermediate position of the elastic force arm 2 to obtain back-off shell fragment 201, can make the structural stability of the elastic force arm 2 better, reduced the part, avoid loaded down with trivial details dismouting process, no waste material produces in the production manufacturing process simultaneously, saved the garbage collection process. The reverse-buckled elastic sheet 201 inclines downwards from the fixed end, and the free end of the reverse-buckled elastic sheet 201 is positioned right above the barb 102. The boss 202 may be formed by bending a portion of the resilient arm 2 inwardly. Form binding off structure between bellying 202 and the terminal body 1, and the free end of back-off shell fragment 201 is less than barb 102 apart from the distance of bellying 202 and pierces the inside size of power cord 4, and after back-off shell fragment 201 damaged, bellying 202 still can play certain limiting displacement to power cord 4, prevents that power cord 4 from breaking away from exempting from to weld broken string terminal.

As a specific embodiment of the welding-free wire-breaking terminal provided in the present invention, please refer to fig. 4, the free end of the reversed elastic sheet 201 is an arc surface. In this embodiment, the reverse-buckled elastic sheet 201 has a function of compressing and fixing the power line 4, so that the free end of the reverse-buckled elastic sheet 201 needs to keep stationary relative to the power line 4. When the free end of the reverse-buckling elastic sheet 201 is in a cutting edge shape or has a sharp corner, the reverse-buckling elastic sheet 201 can puncture the insulating layer of the power line 4 and penetrate into the power line 4, and in the continuous working process, the part of the reverse-buckling elastic sheet 201 entering the power line 4 is more and more, and finally, the reverse-buckling elastic sheet 201 and the power line 4 are loosened, so that the compression fixing effect of the reverse-buckling elastic sheet 201 on the power line 4 is disabled, the free end of the reverse-buckling elastic sheet 201 is designed to be an arc surface, and the problem can be avoided.

As a specific embodiment of the welding-free wire-breaking terminal provided in the present invention, please refer to fig. 4, the non-slip mat 203 is installed at the free end of the flip-flop elastic sheet 201, and the non-slip bumps 204 are disposed on the outer surface of the non-slip mat 203. In this embodiment, the anti-slip pad 203 and the reverse-buckled elastic sheet 201 are fixed by adhesion. The non-slip mat 203 is a flexible member, and the material of the non-slip mat 203 can be rubber or polyurethane. The anti-slip pad 203 increases the friction force with the power cord 4 by the anti-slip bumps 204, and further restricts the movement of the power cord 4 in the horizontal direction.

As a specific embodiment of the welding-free wire-breaking terminal provided by the present invention, please refer to fig. 3, a bonding pad 104 is disposed on the outer side surface of the terminal body 1. In this embodiment, the terminal body 1 is placed on the PCB 3 by a manipulator, the pad 104 on the terminal body 1 corresponds to the pad on the PCB 3, and then the terminal body 1 is welded and fixed on the PCB 3 by an automatic welding method. The welding mode avoids the problems of low welding efficiency and infirm welding points existing in the manual welding mode.

As a specific embodiment of the welding-free wire-breaking terminal provided by the present invention, please refer to fig. 3, the number of the bonding pads 104 is plural, and the bonding pads are uniformly arranged along the length direction of the terminal body 1. In this embodiment, through increasing the quantity of pad 104, can enough satisfy the joint strength between terminal body 1 and the PCB board 3, can reduce the total area of pad 104 again, and then reduce the face of weld and connect, improve welding efficiency.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a exempt from to weld broken string terminal which characterized in that includes:

2. The weld-free wire-breaking terminal as claimed in claim 1, wherein the barbs are at least two and are uniformly arranged along the length direction of the receiving groove.

3. The weld-free wire-breaking terminal as claimed in claim 1, wherein the barb is triangular, and the thickness direction of the barb is perpendicular to the length direction of the receiving groove.

4. The weld-free wire-breaking terminal of claim 3, wherein the height of the barb is greater than the thickness of the insulating layer of the power wire and less than the radius of the power wire.

5. The weld-free wire-breaking terminal of claim 1, wherein the resilient arm, the barb, and the terminal body are integrally formed.

6. The welding-free wire breaking terminal as claimed in claim 1 or 5, wherein a convex part protruding inwards is arranged in the middle of the elastic arm; the protruding part is located the side of back-off shell fragment, and the distance between the inside wall of protruding part and the terminal body is less than the diameter of power cord.

7. The welding-free wire breaking terminal as claimed in claim 1, wherein the free end of the inverted elastic sheet is a circular arc surface.

8. The welding-free wire breaking terminal as claimed in claim 7, wherein a non-slip pad is installed at a free end of the inverted elastic sheet, and non-slip bumps are arranged on an outer surface of the non-slip pad.

9. The welding-free wire-breaking terminal as claimed in claim 1, wherein a pad is provided on an outer side surface of the terminal body.

10. The weld-free wire-breaking terminal as claimed in claim 9, wherein the number of the soldering lands is plural and is uniformly arranged along the length direction of the terminal body.