CN216632272U

CN216632272U - Female terminal with piercing barb and mold thereof

Info

Publication number: CN216632272U
Application number: CN202122498289.2U
Authority: CN
Inventors: 唐海江; 黄雪林; 黄炎
Original assignee: Shenglan Technology Co ltd
Current assignee: Shenglan Technology Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-31
Anticipated expiration: 2031-10-15

Abstract

The utility model belongs to the technical field of terminals, and particularly relates to a female terminal with a piercing barb and a mold thereof. The female terminal with the piercing barb comprises an electric wire connecting part, wherein the electric wire connecting part comprises a terminal bottom part and two crimping parts, and the two crimping parts are respectively formed by bending and rising two sides of the terminal bottom part upwards. The bottom of the terminal is provided with a stretching type piercing barb which is matched with the clamping groove. The stretching type puncture barb of the female terminal has the characteristic of tensile force performance, and the tensile force can reach 0.80kg/f (min) through tests, and the female terminal is firmly combined with a plastic part. The die can be used for rapidly processing and producing the female terminal, during processing, the puncturing piece moves downwards, the puncturing piece is matched with the knife edge piece, the bottom of the terminal is punctured, the downwards punctured bottom part of the terminal is matched with the forming floating piece to form a stretching type puncturing barb, then the forming floating piece floats and pushes out the female terminal, and the puncturing piece moves upwards to finish one-step processing.

Description

Female terminal with piercing barb and mold thereof

Technical Field

The utility model belongs to the technical field of terminals, and particularly relates to a female terminal with a puncture barb and a die thereof.

Background

After the metal part and the plastic main body of the terminal are inserted, in order to ensure that the metal part is not easy to fall off after being matched with the plastic clamping groove, a barb structure is designed on the metal part usually.

Generally, the terminal piercing structure is a plane piercing structure, which satisfies the requirement of conventional use, but has a small pulling force with plastic, the pulling force is measured to be 0.50kg/f (min), and the terminal piercing structure is easy to fall off during use. And the barb height tends to become lower during assembly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a female terminal with a piercing barb and a die thereof, and aims to solve the technical problems of a plane piercing structure and small plastic tension in the prior art.

In order to achieve the above object, the female terminal with the piercing barb according to the embodiment of the present invention is mounted on a plastic part, wherein a clamping groove is formed on the plastic part; the female terminal with the puncture barb comprises an electric wire connecting part, wherein the electric wire connecting part comprises a terminal bottom part and two crimping parts, and the two crimping parts are respectively formed by bending and rising two sides of the terminal bottom part upwards; and a stretching type piercing barb is arranged at the bottom of the terminal and matched with the clamping groove.

Alternatively, the tension type piercing barb is formed by piercing the terminal bottom portion downward, and has one end connected to the terminal bottom portion and the other end extending obliquely downward.

Optionally, the tension type piercing barb is formed by piercing a square portion on the bottom of the terminal downward.

Optionally, the tensile piercing barb is in the shape of a circular arc transition.

One or more technical solutions in the female terminal with piercing barbs provided by the embodiment of the present invention at least have one of the following technical effects: the stretching type puncture barb of the female terminal has the characteristic of tensile force performance, the tensile force can reach 0.80kg/f (min) through tests, the female terminal is firmly combined with a plastic part, and the female terminal has the characteristic of long service life; the female terminal also solves the problem that the terminal and the plastic part interfere with each other due to a narrow space.

In order to achieve the above object, an embodiment of the present invention provides a mold for processing the female terminal with piercing barb, the mold comprising:

the upper die assembly can move up and down and comprises a positioning block and a plurality of puncturing pieces, and the puncturing pieces are fixed on the positioning block and extend downwards; and

the lower die assembly is fixed below the upper die assembly and comprises a piercing main body, at least one knife edge piece, a cushion block structure and at least one forming floating piece; the puncture main body is stacked on the top surface of the cushion block structure, and the female terminal with the puncture barb is arranged on the top surface of the puncture main body for processing; puncture and be equipped with at least one first through-hole and at least one second through-hole on the main part, first through-hole with the second through-hole is adjacent, be equipped with at least one third through-hole on the cushion structure, the third through-hole corresponds to first through-hole, the shaping rises to rise the piece and passes in proper order the third through-hole with first through-hole, the knife edge spare is fixed in the second through-hole, puncture the piece correspond to the knife edge spare and shaping rises to rise the piece top.

Optionally, the mold further comprises at least one positioning pin, at least one puncture needle hole is formed in the height direction of the positioning block, at least one pin hole is formed in the width direction of the positioning block, the pin hole and the puncture needle hole are perpendicularly intersected, the puncture piece comprises a main body section and a needle tip portion, a positioning notch is formed in the main body section, the main body section penetrates through the puncture needle hole, and meanwhile the positioning pin penetrates through the pin hole and is embedded into the positioning notch.

Optionally, a first limiting convex part is arranged on the side surface of the bottom end of the forming buoyancy lifting piece, and the first limiting convex part is limited on the cushion block structure; a rib is arranged along the height direction of the inner side surface of the forming floating piece, a forming inclined plane is arranged at the top end of the rib, the bottom of the terminal is arranged above the forming inclined plane during processing, and the needle tip part is aligned to the forming inclined plane; the first through hole is connected with the second through hole through a groove position, and the ribs are matched with the groove position.

Optionally, the die further comprises a stripper plate, the stripper plate is fixed between the upper die assembly and the lower die assembly, the piercing member penetrates through the stripper plate downwards, and a downward pressing convex rib is arranged on the bottom surface of the stripper plate.

Optionally, the cutting edge piece is L-shaped, a second limiting convex part is arranged on the side surface of the bottom end of the cutting edge piece, and a limiting concave part matched with the second limiting convex part is arranged at the bottom end of the second through hole; the cushion block structure comprises a cushion plate and a cushion block fixing piece, the cushion plate is overlapped on the top surface of the cushion block fixing piece, and the bottom end of the knife-edge piece is limited on the top surface of the cushion plate.

Optionally, the number of the forming buoyant lift members is two, the tops of the forming buoyant lift members are both forked to form two buoyant lift columns, and the inner side surfaces of the two buoyant lift columns are respectively provided with the ribs; the number of the knife edge parts is four, and the four knife edge parts correspond to the four ribs respectively; the number of the puncturing pieces is four, and the four puncturing pieces correspond to the four ribs respectively.

One or more technical solutions in the mold provided by the embodiment of the present invention have at least one of the following technical effects: the die can be used for rapidly processing and producing the female terminal, during processing, the puncturing piece moves downwards, the puncturing piece is matched with the knife edge piece, the bottom of the terminal is punctured, the downwards punctured bottom part of the terminal is matched with the forming floating piece to form a stretching type puncturing barb, then the forming floating piece floats and pushes out the female terminal, and the puncturing piece moves upwards to finish one-step processing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in 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 based on these drawings without inventive exercise.

Fig. 1 is a perspective view of a female terminal with piercing barbs provided in an embodiment of the utility model.

Fig. 2 is a left side view of a female terminal with piercing barbs provided by an embodiment of the utility model.

Fig. 3 is an exploded view of a mold provided in an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a forming buoyant member according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a lower die assembly according to an embodiment of the present invention.

Fig. 6 is a sectional view taken along line a-a shown in fig. 5.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that, if directional indications are provided in the embodiments of the present invention, such as directions of up, down, left, right, front, back, inner, outer, etc., the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "fixed" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In one embodiment of the present invention, as shown in fig. 1-2, a female terminal 1 for puncturing barbs is provided, which is mounted on a plastic member (not shown) having a slot. The female terminal 1 with the piercing barb includes an electric wire connecting portion 11, and the electric wire connecting portion 11 includes a terminal bottom portion 111 and two crimping portions 112, and the two crimping portions 112 are respectively formed by bending and raising both sides of the terminal bottom portion 111 upward. A stretching type piercing barb 113 is arranged on the terminal bottom 111, and the stretching type piercing barb 113 is matched with the clamping groove.

The stretching type puncture barb 113 of the female terminal 1 has the characteristic of tensile force performance, and the tensile force can reach 0.80kg/f (min) through tests, and the female terminal is firmly combined with a plastic part and has the characteristic of long service life. The female terminal 1 also solves the problem of interference between the terminal and the plastic part due to a narrow space.

In another embodiment of the present invention, as shown in fig. 1 to 2, the pull-type piercing barb 113 of the female terminal 1 having the piercing barb is formed by piercing the terminal bottom 111 downward, and one end thereof is connected to the terminal bottom 111 and the other end thereof extends downward. And the inclined barb is adopted, so that the installation is more convenient.

In another embodiment of the present invention, as shown in fig. 1-2, tensile piercing barb 113 is formed by piercing a square portion of terminal bottom 111 downward, and the resulting tensile piercing barb 113 has a higher strength than other shapes.

In another embodiment of the present invention, as shown in fig. 1 to 2, the stretchable piercing barb 113 of the female terminal 1 with piercing barb has a circular arc transition shape, and has a characteristic that the pulling force is large and the height is not easily lowered after installation.

In one embodiment of the present invention, as shown in fig. 3 to 6, a mold 2 for processing a female terminal 1 with piercing barbs is provided, the mold 2 includes an upper mold assembly 21 and a lower mold assembly 22. The upper mold assembly 21 is movable up and down and includes a positioning block 211 and a plurality of puncturing members 212, and the puncturing members 212 are fixed to the positioning block 211 and extend downward. The lower die assembly 22 is secured below the upper die assembly 21 and includes a piercing body 221, at least one knife edge 222, a pad structure 223, and at least one contoured riser 224. The piercing body 221 is stacked on the top surface of the spacer structure 223, and the female terminal 1 having the piercing barb is disposed on the top surface of the piercing body 221 for processing. The piercing body 221 is provided with at least one first through hole 2211 and at least one second through hole 2212, the first through hole 2211 is adjacent to the second through hole 2212, the pad structure 223 is provided with at least one third through hole 2231, the third through hole 2231 corresponds to the first through hole 2211, the forming floating piece 224 sequentially passes through the third through hole 2231 and the first through hole 2211, the knife edge piece 222 is fixed in the second through hole 2212, and the piercing piece 212 corresponds to the knife edge piece 222 and above the forming floating piece 224.

The mold 2 can be used for rapidly processing and producing the female terminal 1, when the mold is processed, the puncturing piece 212 moves downwards, the puncturing piece 212 is matched with the knife edge piece 222, the terminal bottom 111 is punctured, the part of the terminal bottom 111 punctured downwards is matched with the forming floating piece 224 to form the stretching type puncturing barb 113, then the forming floating piece 224 floats and pushes out the female terminal 1, and the puncturing piece 212 moves upwards to finish one-time processing.

In another embodiment of the present invention, as shown in fig. 3, in order to replace the puncturing member 212, the mold 2 further includes at least one positioning pin 213, at least one puncturing pin hole 2111 is formed along the height direction of the positioning block 211, at least one pin hole 2112 is formed along the width direction of the positioning block 211, the pin hole 2112 and the puncturing pin hole 2111 intersect perpendicularly, the puncturing member 212 includes a main body segment 2121 and a pin tip 2122, a positioning notch 2123 is formed on the main body segment 2121, and the main body segment 2121 passes through the puncturing pin hole 2111 while the positioning pin 213 passes through the pin hole 2112 and is inserted into the positioning notch 2123. When replacing, the positioning pin 213 is pulled out from the pin hole 2112, the puncture piece 212 to be replaced is pulled out from the puncture needle hole 2111, the replaced puncture piece 212 is inserted into the puncture needle hole 2111, and the positioning pin 213 is inserted into the pin hole 2112 and fitted into the positioning notch 2123, thereby completing the replacement.

In another embodiment of the present invention, as shown in fig. 3, the mold 2 further includes a stripper plate 23, the stripper plate 23 is fixed between the upper mold assembly 21 and the lower mold assembly 22, the piercing member 212 downwardly penetrates the stripper plate 23, and the bottom surface of the stripper plate 23 is provided with a downward pressing rib 231. The stripper plate 23 serves to separate the female terminal 1 from the stabs 212.

In another embodiment of the present invention, as shown in fig. 6, the knife edge member 222 of the mold 2 is L-shaped, and has a second limit protrusion 2221 on the side surface of the bottom end, and the bottom end of the second through hole 2212 has a limit recess 2213 matching with the second limit protrusion 2221. The pad structure 223 includes a pad 2232 and a pad holder 2233, the pad 2232 being superimposed on the top surface of the pad holder 2233, and the bottom end of the knife-edge 222 being retained on the top surface of the pad 2232.

In another embodiment of the present invention, as shown in fig. 6, the side surface of the bottom end of the forming uplift member 224 of the mold 2 is provided with a first limiting protrusion 2241, and the first limiting protrusion 2241 is limited to the pad block structure 223. A rib 2242 is arranged along the height direction of the inner side surface of the forming floating piece 224, a forming inclined surface 2243 is arranged at the top end of the rib 2242, the terminal bottom 111 is arranged above the forming inclined surface 2243 during processing, the needle tip part 2122 is aligned to the forming inclined surface 2243, the needle tip part 2122 downwards punches the terminal bottom 111, and the terminal bottom 111 is tightly attached to the forming inclined surface 2243 to form a stretching type piercing barb 113. The first through hole 2211 is connected to the second through hole 2212 through a slot 2213, and the rib 2242 is matched to the slot 2213.

In another embodiment of the present invention, as shown in fig. 3 and 6, in order to achieve rapid production, the number of the forming buoyed members 224 of the mold 2 is two, the top of the forming buoyed members 224 are bifurcated to form two buoyed columns 2244, and the inner side surfaces of the two buoyed columns 2244 are respectively provided with ribs 2242. The number of the cutting edge pieces 222 is four, and the four cutting edge pieces 222 correspond to the four ribs 2242 respectively. The number of the puncture pieces 212 is four, and four puncture pieces 212 correspond to four ribs 2242 respectively, so that four stretching type puncture barbs 113 are processed at one time.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A female terminal with a puncture barb is arranged on a plastic part, and a clamping groove is arranged on the plastic part; the female terminal with the puncture barb is characterized by comprising an electric wire connecting part, wherein the electric wire connecting part comprises a terminal bottom part and two crimping parts, and the two crimping parts are respectively formed by bending and rising two sides of the terminal bottom part upwards; and a stretching type piercing barb is arranged at the bottom of the terminal and matched with the clamping groove.

2. The female terminal with piercing barb as defined in claim 1, wherein said pull-type piercing barb is formed by piercing downward from said terminal bottom, and has one end connected to said terminal bottom and the other end extending downward.

3. The female terminal with piercing barb of claim 2, wherein said tensile piercing barb is formed by piercing a square portion on the bottom of said terminal downward.

4. The female terminal with piercing barb of any of claims 1-3, wherein said tensile piercing barb is in the shape of a rounded transition.

5. A mold for processing the female terminal with piercing barb according to any of claims 1-4, comprising:

6. The mold according to claim 5, further comprising at least one positioning pin, wherein at least one piercing pin hole is formed in the height direction of the positioning block, at least one pin hole is formed in the width direction of the positioning block, the pin hole and the piercing pin hole are perpendicularly intersected, the piercing member comprises a main body section and a needle tip portion, a positioning notch is formed in the main body section, the main body section penetrates through the piercing pin hole, and the positioning pin penetrates through the pin hole and is embedded into the positioning notch.

7. The mold according to claim 6, wherein the bottom end side of the forming uplift member is provided with a first limit convex part, and the first limit convex part is limited on the cushion block structure; a rib is arranged along the height direction of the inner side surface of the forming floating piece, a forming inclined plane is arranged at the top end of the rib, the bottom of the terminal is arranged above the forming inclined plane during processing, and the needle tip part is aligned to the forming inclined plane; the first through hole is connected with the second through hole through a groove position, and the ribs are matched with the groove position.

8. The mold according to any one of claims 5 to 7, further comprising a stripper plate fixed between the upper mold assembly and the lower mold assembly, the piercing member passing downward through the stripper plate, and a bottom surface of the stripper plate being provided with a downward pressing rib.

9. The die according to any one of claims 5-7, wherein the cutting edge piece is L-shaped, a second limiting convex part is arranged on the side surface of the bottom end of the cutting edge piece, and a limiting concave part matched with the second limiting convex part is arranged at the bottom end of the second through hole; the cushion block structure comprises a cushion plate and a cushion block fixing piece, the cushion plate is overlapped on the top surface of the cushion block fixing piece, and the bottom end of the knife-edge piece is limited on the top surface of the cushion plate.

10. The mold according to claim 7, wherein the number of the forming buoyed members is two, the top of each forming buoyed member is bifurcated to form two buoyed columns, and the inner side surfaces of the two buoyed columns are respectively provided with the ribs; the number of the knife edge parts is four, and the four knife edge parts correspond to the four ribs respectively; the number of the puncturing pieces is four, and the four puncturing pieces correspond to the four ribs respectively.