TWM661692U - Electronic plug-in and crimping terminal - Google Patents

Abstract

The invention provides an electronic plug-in and a crimping terminal thereof. The crimping terminal comprises a terminal body, a stamping concave portion and a punching hole. The terminal body comprises a first surface and a second surface opposite to each other, and a crimping section. The stamping concave portion is concavely arranged on the crimping section from the first surface, so that the crimping section has a relatively thin residual thickness between the bottom of the stamping concave portion and the second surface. The hole extends from the bottom of the embossing concave portion to the second surface and is located within the range of the embossing concave portion. The maximum width of the punch hole is greater than or equal to the thinner remaining thickness, which can not only make the crimping terminal have sufficient structural strength and can stably be crimped and combined with the crimping hole, but also ensure the strength and service life of the punch during processing to avoid damage to the punch or the terminal body.

Description

Electronic plug-in and crimping terminal

The invention relates to a conductive connection device, in particular to a crimping terminal and an electronic plug-in having the crimping terminal.

In the assembly of electronic parts, crimping is a commonly used connection method. Through the cooperation of crimping terminals and crimping holes, the effects of structural stability and electrical signal connection are achieved at the same time. The existing crimping terminals include a terminal body and a punch hole penetrating the terminal body. The punch hole weakens the structure of the terminal body and has a certain elasticity, so that it can be plugged and coupled with the corresponding crimping hole and locked therein.

However, due to processing conditions, smaller terminals are not suitable for production because the punch holes are relatively small, which causes the punch used for processing to break easily. If the punch holes of existing crimp terminals are too large, the existing crimp terminals are likely to be insufficiently strong, easily deformed, or even unable to be stably combined with the crimp holes.

In order to solve the above problems, the purpose of the present invention is to provide a crimping terminal which is suitable for production and can be stably crimped and combined with a crimping hole, and an electronic plug-in having the crimping terminal.

The crimping terminal proposed by the new type of solution to the technical problem comprises: A terminal body, which is elongated along an insertion direction and comprises two opposite surfaces and a crimping section, the two surfaces are respectively a first surface and a second surface, and the crimping section is located between the two surfaces; and An embossing concave portion, which is concavely arranged on the crimping section from the first surface, and the distance between the bottom of the embossing concave portion and the second surface is defined as a residual thickness; and A punch hole, which extends from the bottom of the embossing concave portion to the second surface, the punch hole is located within the range of the embossing concave portion, and the maximum width of the punch hole in a width direction orthogonal to the insertion direction is greater than or equal to the residual thickness; The embossed concave portion and the punched hole enable the crimping section to form two spaced elastic deformation portions.

The novel solution to the technical problem further proposes an electronic plug-in, which comprises: a housing; and a plurality of crimping terminals as described above, the plurality of crimping terminals being arranged on the housing at intervals.

The technical means of the present invention can achieve improved effects in that: the crimping terminal and the electronic plug-in having the crimping terminal provided by the present invention are provided with the embossing recess and the punch hole on the terminal body, and the embossing recess is used to make the crimping section have a residual thickness thinner than the thickness of the terminal body, and the maximum width of the punch hole is greater than the thinner residual thickness, so that the crimping terminal can have sufficient strength and can be stably crimped and combined with the crimping hole, and at the same time, the strength and service life of the punch during processing can be ensured to avoid damage to the punch.

In order to understand the technical features and practical effects of the new invention in detail and to implement it according to the new content, a preferred embodiment as shown in the figure is further described in detail as follows:

As shown in FIG. 1 and FIG. 2 , the present invention provides a first preferred embodiment of a crimping terminal, the crimping terminal comprising a terminal body 10 , a stamping recess 20 and a punching hole 30 , wherein the stamping recess 20 and the punching hole 30 are formed on the terminal body 10 .

As shown in FIG. 2 , the terminal body 10 extends along an insertion direction D1 and is elongated, and as shown in FIGS. 1 to 3 , the terminal body 10 includes two opposite surfaces and a connecting portion 11 and a crimping section 12 connected along the insertion direction D1; the connecting portion 11 can form a fixed structure away from the crimping section 12 to be combined with a housing of an electronic plug-in, or form a buffer structure to provide a buffer when the crimping terminal is subjected to force, which is not particularly limited in the present invention, so the end of the connecting portion 11 is cut off in FIGS. 1 and 2 and is not particularly drawn.

As shown in FIG. 3 and FIG. 4 , the two surfaces are respectively a first surface 101 and a second surface 102 , and the crimping section 12 is located between the first surface 101 and the second surface 102 , so that the crimping terminal can be plugged into a crimping hole through the crimping section 12 . The detailed process of plugging and bonding will be further described later.

As shown in FIGS. 1 to 3 , the embossing recess 20 is recessed from the first surface 101 of the terminal body 10 on the crimping section 12, and the width of the embossing recess 20 gradually decreases toward the second surface 102. The punch hole 30 extends from the bottom of the embossing recess 20 to the second surface 102 of the terminal body 10, so as to weaken the rigidity of the crimping section 12 and enhance the elasticity of the crimping section 12, so as to facilitate the aforementioned plug-in connection of the crimping terminal. As shown in FIG. 2 , the punch hole 30 is located within the range of the embossing recess 20 , that is, the length, width and other dimensions of the punch hole 30 are smaller than the dimensions of the embossing recess 20 , and the punch hole 30 does not exceed the edge of the embossing recess 20 .

As shown in FIGS. 2 to 4 , the embossing recess 20 is located on the first surface 101 in a width direction D2 and has a maximum width (referred to as width W1 in the following description), and the punch hole 30 is located on the first surface 101 in the width direction D2 and also has a maximum width (referred to as width W2 in the following description). Specifically, the width direction D2 is orthogonal to the insertion direction D1 extending from the terminal body 10; in the insertion direction D1 extending from the terminal body 10, the embossing recess 20 is located on the first surface 101 and has a length L1, and the punch hole 30 also has a length L2. As mentioned above, the length L2 of the punch hole 30 is smaller than the length L1 of the embossing recess 20 (L2 < L1), and the width W2 of the punch hole 30 is smaller than the width W1 of the embossing recess 20 (W2 W1), more specifically, except for the cross-sectional view of the embossed concave portion 20 and the punch hole 30 obtained along the AA cutting line in Figure 2, in the cross-sectional view of the embossed concave portion 20 and the punch hole 30 obtained along any line segment parallel to the AA cutting line in the width direction D2, the width W2 of the punch hole 30 is smaller than the width W1 of the embossed concave portion 20.

In a specific production method, a plate is first punched and sheared to preliminarily form the shape of the terminal body 10, and then coining is performed to form the coining recess 20 on the plate. During the coining process, the material is pushed outward from the formed coining recess 20 due to force, and the shape of the plate will expand outward, so a second punching and shearing process is required to trim the expanded part of the plate again to keep the plate forming the predetermined shape of the terminal body 10. Through this operation step, the product size can be accurately controlled; after the above processing process, the terminal body 10 is formed and has a thickness T between the first surface 101 and the second surface 102 of the terminal body 10, and the distance between the bottom of the coining recess 20 and the second surface 102 is defined as a residual thickness t.

After the second punching and shearing process, the punching hole 30 is formed, wherein the punching hole 30 can be formed at the bottom of the embossing recess 20 by punching, so that the punching hole 30 extends through the second surface 102. In the process of punching the punching hole 30, a limiting component can be provided at the outer periphery of the terminal body 10 to limit the terminal body 10, so as to prevent the terminal body 10 from being deformed outwardly as described above again when pressed by the punch head of the punching process, so as to ensure that the outer contour of the terminal body 10 maintains the predetermined shape.

As shown in FIG. 5 , the produced crimping terminal is used to be plugged into a crimping hole 91 to achieve the connection effect of electrical signals and structures, wherein the crimping hole 91 can be located on a printed circuit board (PCB), but is not limited thereto. First, the terminal body 10 is inserted toward the crimping hole 91 along the insertion direction D1. Since the punching hole 30 weakens the structure of the crimping section 12 and makes it elastic, the crimping section 12 can produce elastic deformation when subjected to the resistance of the crimping hole 91 so as to be inserted into the crimping hole 91.

Specifically, as shown in FIG. 3 and FIG. 6 , the embossing concave portion 20 and the punching hole 30 form two spaced elastic deformation portions 121 in the press-fit section 12 . Since the width W1 of the embossing concave portion 20 is greater than the width W2 of the punching hole 30 , the elastic deformation portion 121 is more easily deformed at the first surface 101 than at the second surface 102 . As shown in FIG. 6 , the elastic deformation portion 121 is more easily deformed at the first surface 101 than at the second surface 102 . When the two elastic deformation parts 121 are deformed by the pressure of the hole wall of the crimping hole 91 and approach each other, the displacement of the elastic deformation part 121 at the first surface 101 is greater than the displacement of the elastic deformation part 121 at the second surface 102, that is, the two elastic deformation parts 121 at the first surface 101 are deflected in the direction of approaching each other until the crimping section 12 is firmly stuck in the crimping hole 91.

Due to the aforementioned elastic deformation design, the overall width of the crimping section 12 can be designed to be wider, specifically 1.2 mm. As shown in FIG. 3 , the embossing recess 20 retains a minimum wall thickness d between the first surface 101 and the edge of the crimping section 12 to ensure that the elastic deformation portion 121 has sufficient strength near the first surface 101, and the wall thickness d can specifically be 0.1 mm.

The crimping terminal of the present invention is provided with the embossing recess 20 and the punching hole 30 on the terminal body 10. Through the provision of the embossing recess 20, the crimping section 12 of the terminal body 10 has a residual thickness t that is thinner than the thickness T of the terminal body 10. In combination with the punching hole 30 located within the range of the embossing recess 20, the maximum width of the punching hole 30 is 1.3mm. The width W2 is greater than or equal to the thinner residual thickness t, which can not only make the crimping terminal have sufficient strength to be stably maintained in the crimping hole after insertion, but also ensure the strength and service life of the punch for processing the punching hole 30 and avoid the punch being damaged during processing. The present invention provides a crimping terminal suitable for production and capable of being stably crimped and combined with the crimping hole. The width of the punching hole 30 of the preferred embodiment is narrow at both ends and wide in the middle. In addition, in other embodiments, the punching hole 30 may also have a substantially constant width, and the aforementioned maximum width W2 of the punching hole 30 refers to a constant width. This embodiment also satisfies that the maximum width W2 of the punching hole 30 is greater than or equal to the remaining thickness t.

Furthermore, the remaining thickness t is less than or equal to half of the thickness T of the terminal body 10 (t 0.5T), taking the remaining thickness t as half of the thickness T of the terminal body 10 as an example, the width W2 of the punch hole 30 can be designed to be at least half of the thickness T of the terminal body 10. Through the above-mentioned restriction condition of the remaining thickness t, the lower limit value of the width W2 of the punch hole 30 can be further reduced, so that the elasticity and structural strength of the crimping section 12 can be better controlled, so that the crimping section 12 has more sufficient holding force to be clamped in the crimping hole 91 after being inserted into the crimping hole 91, and the crimping terminal is less likely to loosen from the crimping hole 91.

For example, in a specific embodiment, the thickness T of the terminal body 10 is 0.6 mm, and the depth of the embossing recess 20 is 0.3 mm, that is, half of the thickness T of the terminal body 10. Correspondingly, the remaining thickness t is 0.3 mm, and the width W2 of the punch hole 30 meets the corresponding restriction conditions, so that the size of the crimping terminal is suitable for production and processing.

Referring to FIG. 3 , in the first preferred embodiment of the present invention, in the width direction D2 of the crimping terminal, the ratio of the width W2 of the punch hole 30 to the width W1 of the embossing recess 20 is between 0.3 and 0.6, including the end value (0.3 W2/W1 0.6). Through an appropriate width ratio, the deflection amplitude of the two elastic deformation portions 121, i.e., the elastic deformation amplitude of the crimping section 12, can be further controlled, thereby improving the convenience of inserting the crimping section 12 into the crimping hole 91 and preventing the crimping section 12 from being too easily deformed and affecting the holding force of the crimping section 12 in the crimping hole 91.

Referring to FIG. 4 , in the first preferred embodiment of the present invention, in the insertion direction D1 of the crimping terminal, the ratio of the length L2 of the punch hole 30 to the length L1 of the embossing recess 20 is between 0.5 and 0.85, including the end value (0.5 L2/L1 0.85). By means of an appropriate length ratio, the length of the range of elastic deformation of the crimping section 12 in the insertion direction D1 can be controlled to meet the design of the elastic deformation of the crimping section 12 to be inserted into the crimping hole 91, and at the same time, the crimping section 12 has sufficient holding force when it is clamped in the crimping hole 91.

For example, in a specific embodiment, the length L2 of the punch hole 30 is 2.1 mm, the width W2 of the punch hole 30 is 0.3 mm, and the length L1 and width W1 of the stamping recess 20 correspond to meet the above-mentioned restriction conditions, so that the size of the crimping terminal is suitable for production, processing and actual use.

In the first preferred embodiment of the present invention, the crimping terminal satisfies the above-mentioned width ratio and length ratio restrictions at the same time. In other embodiments, it may only satisfy one of the above-mentioned width ratio and length ratio restrictions as needed, or adopt a design close to the above-mentioned width ratio and length ratio, which is not limited to the preferred embodiment of the present invention.

Furthermore, in the first preferred embodiment of the present invention, the first surface 101 and the second surface 102 of the terminal body 10 are substantially parallel, and the substantially parallel includes that the first surface 101 and the second surface 102 are absolutely parallel, or slightly deviate from the absolute parallel by a small angle due to the error in the aforementioned processing of the plate. Compared with the existing crimping terminal formed by wire stamping, the design of the first surface 101 and the second surface 102 of the terminal body 10 are parallel, which can reduce the difficulty of production.

Preferably, in the first preferred embodiment of the present invention, as shown in FIG. 3 and FIG. 6 , the crimping section 12 of the terminal body 10 includes two side surfaces 120 located opposite to each other, each of the side surfaces 120 is connected to the first surface 101 and the second surface 102, and the connection between the side surface 120 and the first surface 101 and the connection between the side surface 120 and the second surface 102 each forms a fillet, that is, the The cross section of the crimping section 12 is a rounded rectangle when not deformed as shown in FIG. 3 . As shown in FIG. 6 , when the crimping section 12 is clamped in the crimping hole 91 , the four rounded corners of the rounded rectangle form four-point contact with the hole wall of the crimping hole 91 . Through the rounded design, the crimping section 12 can be elastically deformed more smoothly, and the structure of the crimping section 12 and the crimping hole 91 is less susceptible to damage.

In addition, as shown in FIG. 7 , the first preferred embodiment of the present invention further provides an electronic plug-in, which includes a housing 90 and a plurality of crimping terminals 80 as provided above, wherein the plurality of crimping terminals 80 are arranged on the housing 90 at intervals, wherein the electronic plug-in can be a press-fit connector, such as a wire-to-board connector (WTB connector), a board-to-board connector (BTB connector), a row of pins (pin header), but is not limited to the above; through the plurality of crimping terminals 80 as described above, the electronic plug-in can have the effect that the crimping terminals 80 can be stably pressed and combined, and is suitable for production and processing.

Please refer to Figures 8 and 9. The difference between the crimping terminal provided in the second preferred embodiment of the present invention and the first preferred embodiment of the present invention is that each side surface 120A of the crimping section 12 is arc-shaped, that is, each side surface 120A extends in an arc shape from the first surface 101 of the terminal body 10 to the second surface 102 of the terminal body 10.

As shown in FIG. 10 , when the crimping section 12 is plugged into the crimping hole 91, the contact area between the crimping section 12 and the hole wall of the crimping hole 91 can be increased through the two arc-shaped side surfaces 120A, so that the crimping section 12 fits more closely to the hole wall of the crimping hole 91, and the holding force of the crimping section 12 on the hole wall of the crimping hole 91 can be increased. The contact between the crimping section 12 and the hole wall of the crimping hole 91 is not easy to be separated, and stable electrical signal conduction can be maintained at the same time. In addition, when the crimping section 12 is elastically deformed, the crimping section 12 and the hole wall of the crimping hole 91 are less likely to be damaged.

The above is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any person with ordinary knowledge in the relevant technical field, if within the scope of the technical solution proposed by the present invention, makes partial changes or modifications to the technical content disclosed by the present invention, and does not deviate from the technical solution content of the present invention, all of which are still within the scope of the technical solution of the present invention.

10: Terminal body 101: First surface 102: Second surface 11: Connecting part 12: Press-fit section 120, 120A: Side surface 121: Elastic deformation part 20: Stamping concave part 30: Punching hole 80: Press-fit terminal 90: Shell 91: Press-fit hole D1: Insertion direction D2: Width direction d: Wall thickness L1: Length L2: Length T: Thickness t: Remaining thickness W1: Width W2: Width

Figure 1 is a three-dimensional external view of the crimping terminal of the first preferred embodiment of the present invention. Figure 2 is a front view of the crimping terminal of the first preferred embodiment of the present invention. Figure 3 is a cross-sectional view along the A-A cutting line of Figure 2. Figure 4 is a cross-sectional view along the B-B cutting line of Figure 2. Figure 5 is an operation diagram of the crimping terminal of the first preferred embodiment of the present invention being inserted into a crimping hole. Figure 6 is a schematic cross-sectional view of the crimping terminal of the first preferred embodiment of the present invention being inserted into the aforementioned crimping hole. Figure 7 is a schematic external view of the electronic plug-in of the first preferred embodiment of the present invention. Figure 8 is a front view of the crimping terminal of the second preferred embodiment of the present invention. Figure 9 is a cross-sectional view along the C-C cutting line of Figure 8. Figure 10 is a cross-sectional diagram of the crimping terminal of the second preferred embodiment of the present invention being inserted into a crimping hole.

10: Terminal body

101: First surface

11: Connection part

12: Press-fit section

120: Side

20: Embossed concave part

30: Punching

Claims (9)

A crimping terminal, comprising: a terminal body, which is elongated along an insertion direction and comprises two opposite surfaces and a crimping section, the two surfaces are respectively a first surface and a second surface, the crimping section is located between the two surfaces; and an embossing recess, which is recessed from the first surface on the crimping section, the distance between the bottom of the embossing recess and the second surface is defined as a residual thickness; and a punch hole, which extends from the bottom of the embossing recess to the second surface, the punch hole is located within the range of the embossing recess, and the maximum width of the punch hole in a width direction orthogonal to the insertion direction is greater than or equal to the residual thickness; The embossed concave portion and the punched hole enable the crimping section to form two spaced elastic deformation portions. A crimping terminal as described in claim 1, wherein the terminal body has a thickness formed between the two surfaces, and the remaining thickness is less than or equal to half of the thickness of the terminal body. A crimping terminal as described in claim 1, wherein the embossed concave portion has a maximum width on the first surface in the width direction, and the ratio of the maximum width of the punch hole to the maximum width of the embossed concave portion is between 0.3 and 0.6, including end point values. A crimping terminal as described in claim 1, wherein the embossed concave portion has a length on the first surface in the insertion direction, the punch hole has a length in the insertion direction, and the ratio of the length of the punch hole to the length of the embossed concave portion is between 0.5 and 0.85, including end point values. A crimping terminal as described in claim 4, wherein the length of the punch hole is 2.1 mm and the maximum width of the punch hole is 0.3 mm. A crimping terminal as described in any one of claims 1 to 5, wherein the two surfaces of the terminal body are parallel. A crimping terminal as described in claim 6, wherein the crimping section includes two side surfaces located opposite to each other, each of the side surfaces is connected to the two surfaces, and a rounded corner is formed at the connection between the side surfaces and each of the surfaces. A crimping terminal as described in claim 6, wherein the crimping section includes two side surfaces that are positioned opposite to each other, the two side surfaces extend from two sides of the first surface to two sides of the second surface respectively, and the two side surfaces are in an arc shape. An electronic plug-in comprising: a housing; and a plurality of crimping terminals as described in any one of claims 1 to 8, the plurality of crimping terminals being arranged on the housing at intervals.

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