Electronic plug-in and crimping terminal thereof
By designing the imprinting recesses and punching holes on the crimp terminals, two elastic deformation parts are formed at phases, which solves the problems of insufficient strength and processing difficulties of the existing crimp terminals, and achieves a stable crimping bond and punch strength guarantee.
Patent Information
- Application Number
- CN202421692399.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-17
AI Technical Summary
Excessive punching of existing crimp terminals can lead to insufficient strength or difficulty in processing, resulting in problems that cannot be firmly combined with crimp holes.
A crimp terminal is designed, which includes an imprinting recess and a punching hole, with a maximum width of the punching hole being greater than or equal to the remaining thickness. By this structure, two elastic deformation parts are formed at phases to ensure the strength and elasticity of the crimp section.
The crimp terminal is firmly combined with the crimp hole after being plugged in, while ensuring the strength and service life of the punch, avoiding damage to the punch during processing.
Smart Images
Figure CN222915198U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for conductive connection, in particular to a crimp terminal and an electronic plug-in unit with the crimp terminal. Background Art
[0002] In the assembly of electronic components, crimping is a frequently used connection method. Through the cooperation of a crimp terminal and a crimp hole, the effects of stable structural combination and electrical signal connection are achieved simultaneously. The existing crimp terminal includes a terminal body and a punching hole penetrating the terminal body. The punching hole weakens the structure of the terminal body and has a certain elasticity, so that it can be inserted and combined with the corresponding crimp hole and clamped therein.
[0003] However, limited by processing conditions, for smaller terminals, due to the relatively small punching hole, the punching head for processing is prone to breakage, making it unsuitable for production. If the punching hole of the existing crimp terminal is too large, it is easy to cause insufficient strength and easy deformation of the existing crimp terminal, and even the problem of being unable to stably combine with the crimp hole. Summary of the Utility Model
[0004] In order to solve the above problems, the purpose of the utility model is to provide a crimp terminal suitable for production and capable of stably crimping and combining with a crimp hole, and an electronic plug-in unit with the crimp terminal.
[0005] The crimp terminal proposed by the utility model to solve the technical problem includes:
[0006] A terminal body, which extends along an insertion direction and is elongated, and includes two opposite surfaces and a crimping section. The two surfaces are a first surface and a second surface respectively, and the crimping section is located between the two surfaces; and
[0007] 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 remaining thickness; and
[0008] A punching hole, which penetrates from the bottom of the embossing recess to the second surface. The punching hole is within the range of the embossing recess, and the maximum width of the punching hole in a width direction orthogonal to the insertion direction is greater than or equal to the remaining thickness;
[0009] Wherein, the embossing recess and the punching hole form two spaced elastic deformation parts on the crimping section.
[0010] The utility model further provides an electronic plug-in unit to solve the technical problem, which includes:
[0011] A housing; and
[0012] Several crimp terminals as described above, which are spaced apart and arranged on the housing.
[0013] The improvement in the effects achievable by the technical means of the present utility model lies in that: the crimping terminal provided by the present utility model and the electronic plug-in component equipped with the crimping terminal are provided with the embossing recess and the punching hole on the terminal body. Through the embossing recess, a remaining thickness thinner than the thickness of the terminal body is formed on a part of the crimping section. Coupled with the maximum width of the punching hole being greater than the thinner remaining thickness, it can not only endow the crimping terminal with sufficient strength to stably crimp and combine with the crimping hole, but also ensure the strength and service life of the punch during processing and avoid damage to the punch. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Is a three-dimensional external view of the crimping terminal according to the first preferred embodiment of the present utility model.
[0015] Figure 2 Is a front view of the crimping terminal according to the first preferred embodiment of the present utility model.
[0016] Figure 3 Is a sectional view along the Figure 2 A-A cutting plane line.
[0017] Figure 4 Is a sectional view along the Figure 2 B-B cutting plane line.
[0018] Figure 5 Is an operation diagram of the crimping terminal according to the first preferred embodiment of the present utility model inserted into a crimping hole.
[0019] Figure 6 Is a sectional schematic diagram of the crimping terminal according to the first preferred embodiment of the present utility model inserted into the aforementioned crimping hole.
[0020] Figure 7 Is an external view schematic diagram of the electronic plug-in component according to the first preferred embodiment of the present utility model.
[0021] Figure 8 Is a front view of the crimping terminal according to the second preferred embodiment of the present utility model.
[0022] Figure 9 Is a sectional view along the Figure 8 C-C cutting plane line.
[0023] Figure 10 Is a sectional schematic diagram of the crimping terminal according to the second preferred embodiment of the present utility model inserted into a crimping hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] In order to understand in detail the technical features and practical effects of the present utility model and to implement it in accordance with the new content, the following further details are described in detail with reference to the preferred embodiments shown in the drawings:
[0025] As Figure 1 and Figure 2 shown, the present utility model provides a first preferred embodiment of a crimp terminal, which includes a terminal body 10, an embossing recess 20 and a punching hole 30. The embossing recess 20 and the punching hole 30 are formed on the terminal body 10.
[0026] As Figure 2 shown, the terminal body 10 extends along an insertion direction D1 and is elongated. And as Figures 1 to 3 shown, the terminal body 10 includes two opposite surfaces, and a connecting portion 11 and a crimping section 12 connected along the insertion direction D1. A fixing structure may be formed at a position of the connecting portion 11 far from the crimping section 12 to be combined with a housing of an electronic plug-in, or a buffer structure may be formed to provide buffering when the crimp terminal is stressed. In the present utility model, there is no special limitation. Therefore, in Figure 1 and Figure 2 the end of the connecting portion 11 is truncated and not particularly drawn.
[0027] As Figure 3 and Figure 4 shown, the two surfaces are respectively a first surface 101 and a second surface 102. The crimping section 12 is located between the first surface 101 and the second surface 102, so that the crimp terminal can be inserted and combined with a crimping hole through the crimping section 12. The detailed process of the insertion and combination will be further described later.
[0028] As Figures 1 to 3 shown, 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 in the direction towards the second surface 102. The punching hole 30 extends through 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 improve the elasticity of the crimping section 12, so that the crimp terminal can perform the aforementioned insertion and combination. As Figure 2 shown, the punching hole 30 is located within the range of the embossing recess 20, that is, the dimensions such as the length and width of the punching hole 30 are smaller than those of the embossing recess 20, and the punching hole 30 does not extend beyond the edge of the embossing recess 20.
[0029] Among them, as Figures 2 to 4As shown, the embossing recess 20 has a maximum width (hereinafter simply referred to as width W1) in a width direction D2 on the first surface 101. The punching hole 30 also has a maximum width (hereinafter simply referred to as width W2) in the width direction D2 on the first surface 101. Specifically, the width direction D2 is orthogonal to the insertion direction D1 in which the terminal body 10 extends. In the insertion direction D1 in which the terminal body 10 extends, the embossing recess 20 has a length L1 at the first surface 101, and the punching hole 30 also has a length L2. As described above, the length L2 of the punching hole 30 is less than the length L1 of the embossing recess 20 (L2 < L1), and the width W2 of the punching hole 30 is less than the width W1 of the embossing recess 20 (W2 < W1). More specifically, except for the cross-sectional views of the embossing recess 20 and the punching hole 30 obtained along the A-A cutting plane line of Figure 2 In the cross-sectional views of the embossing recess 20 and the punching hole 30 obtained along any line segment parallel to the A-A cutting plane line in the width direction D2, the width W2 of the punching hole 30 is less than the width W1 of the embossing recess 20.
[0030] In a specific production method, a sheet is first subjected to punching and shearing to preliminarily form the outer shape of the terminal body 10, and then coining is performed to form the embossing recess 20 on the sheet. During the coining process, due to the force on the material, the material is pushed outwards from the formed embossing recess 20, and the outer shape of the sheet will expand outwards. Therefore, a second punching and shearing process is required to trim the expanded part of the sheet again to maintain the predetermined outer shape of the sheet forming the terminal body 10. Through this operation step, the product dimensions can be accurately controlled. After the above processing, 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. The distance between the bottom of the embossing recess 20 and the second surface 102 is defined as a remaining thickness t.
[0031] After the second punching and shearing process, the forming operation of the punching hole 30 is performed. The punching hole 30 can be formed at the bottom of the embossing recess 20 by punching, so that the punching hole 30 penetrates and extends to the second surface 102. During the process of forming the punching hole 30 by punching, a limiting member can be provided at the outer peripheral edge of the terminal body 10 to limit the terminal body 10 to prevent the terminal body 10 from deforming outwards again when being pressed by the punch during the punching process, and to ensure that the outer contour of the terminal body 10 maintains the predetermined outer shape.
[0032] As Figure 5As shown, the produced crimp terminal is used to be plugged and combined with a crimping hole 91 to achieve the connection effect of electrical signals and structure, where the crimping hole 91 can be located on a printed circuit board (PCB), but not limited thereto; first, the terminal body 10 is inserted into the crimping hole 91 along the insertion direction D1. Since the punching 30 weakens the structure of the crimping section 12 and makes it elastic, the crimping section 12 can produce elastic deformation when receiving the resistance of the crimping hole 91, so as to be inserted into the crimping hole 91.
[0033] Specifically, as Figure 3 and Figure 6 shown, the embossing recess 20 and the punching 30 make the crimping section 12 form two spaced elastic deformation parts 121. Among them, since the width W1 of the embossing recess 20 is greater than the width W2 of the punching 30, the elastic deformation part 121 is more likely to deform at the first surface 101 than at the second surface 102 of the elastic deformation part 121. As Figure 6 shown, when the crimping section 12 is pressed against by the hole wall of the crimping hole 91 and deformed, and the two elastic deformation parts 121 are close to 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 swing towards the approaching direction until the crimping section 12 is firmly clamped in the crimping hole 91.
[0034] Due to the above-mentioned elastic deformation design, the overall width of the crimping section 12 can be designed to be relatively wide, specifically 1.2 millimeters. As Figure 3 shown, a minimum wall thickness d is reserved between the embossing recess 20 and the edge of the crimping section 12 at the first surface 101 to ensure that the elastic deformation part 121 has sufficient strength near the first surface 101, and the wall thickness d can be specifically 0.1 millimeter.
[0035] The crimping terminal of the present utility model is provided with the embossing recess 20 and the punching hole 30 on the terminal body 10. Through the arrangement of the embossing recess 20, a remaining thickness t of a part of the crimping section 12 of the terminal body 10 is thinner than the thickness T of the terminal body 10. In combination with the punching hole 30 within the range of the embossing recess 20, its maximum width W2 is greater than or equal to the thinner remaining thickness t. This can not only make the crimping terminal have sufficient strength to stably maintain 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 damage to the punch during processing. The present utility model thereby provides a crimping terminal suitable for production and capable of stably crimping and combining with the crimping hole. In this preferred embodiment, the width of the punching hole 30 presents a pattern that is narrower at both ends and wider in the middle section. Additionally, in other embodiments, the punching hole 30 may also have a substantially constant width. In this case, the aforementioned maximum width W2 of the punching hole 30 refers to the constant width, and this embodiment also satisfies that the maximum width W2 of the punching hole 30 is greater than or equal to the remaining thickness t.
[0036] Furthermore, the remaining thickness t is less than or equal to one-half of the thickness T of the terminal body 10 (t ≤ 0.5T). Taking the example where the remaining thickness t is equal to one-half of the thickness T of the terminal body 10, the width W2 of the punching hole 30 can be designed to be at least one-half of the thickness T of the terminal body 10 at the minimum. Through the above limiting conditions of the remaining thickness t, the lower limit value of the width W2 of the punching hole 30 can be further reduced, thereby better controlling the elasticity and structural strength of the crimping section 12, enabling the crimping section 12 to have a more sufficient holding force to latch in the crimping hole 91 after being inserted into the crimping hole 91, and making the crimping terminal less likely to become loose from the crimping hole 91.
[0037] For example, in a specific embodiment, the thickness T of the terminal body 10 is 0.6 millimeters, and the depth of the embossing recess 20 is 0.3 millimeters, which is one-half of the thickness T of the terminal body 10. Correspondingly, the remaining thickness t is 0.3 millimeters, and the width W2 of the punching hole 30 satisfies the corresponding limiting conditions, making the size of the crimping terminal suitable for production and processing.
[0038] Please refer to Figure 3 As shown, in the first preferred embodiment of the present utility model, in the width direction D2 of the crimping terminal, the ratio of the width W2 of the punching hole 30 to the width W1 of the embossing recess 20 is between 0.3 and 0.6, including the endpoint values (i.e., 0.3 ≤ W2 / W1 ≤ 0.6). Through an appropriate width ratio, the deflection amplitude of the two elastic deformation parts 121, that is, the elastic deformation amplitude of the crimping section 12, can be further controlled, improving the convenience of inserting the crimping section 12 into the crimping hole 91, and at the same time preventing the crimping section 12 from being too easily deformed and affecting the holding force for latching in the crimping hole 91.
[0039] Please refer to Figure 4 As shown, in the first preferred embodiment of the present utility model, in the insertion direction D1 of the crimping terminal, the ratio of the length L2 of the punching hole 30 to the length L1 of the embossing recess 20 is between 0.5 and 0.85, including the end values (i.e., 0.5 ≤ L2 / L1 ≤ 0.85). Through an appropriate length ratio, the length of the range in which the crimping section 12 elastically deforms can be controlled in the insertion direction D1, meeting the design that the crimping section 12 elastically deforms to insert into the crimping hole 91, and at the same time enabling the crimping section 12 to have sufficient holding force when it is clamped in the crimping hole 91.
[0040] For example, in a specific embodiment, the length L2 of the punching hole 30 is 2.1 millimeters (mm), the width W2 of the punching hole 30 is 0.3 millimeters, and the length L1 and width W1 of the embossing recess 20 correspondingly meet the above-mentioned limiting conditions, making the size of the crimping terminal suitable for production, processing, and actual use.
[0041] In the first preferred embodiment of the present utility model, the crimping terminal simultaneously meets the limiting conditions of the above width ratio and length ratio. In other embodiments, it may also only meet one of the limiting conditions of the above width ratio and length ratio as needed, or adopt a design close to the above width ratio and length ratio, and is not limited to the preferred embodiment of the present utility model.
[0042] Furthermore, in the first preferred embodiment of the present utility model, the first surface 101 and the second surface 102 of the terminal body 10 are substantially parallel. The so-called substantially parallel includes that the first surface 101 and the second surface 102 are absolutely parallel, or slightly deviate from absolute parallel by a small angle due to errors in the process of processing the sheet material. Compared with the existing crimping terminal formed by wire stamping, the design in which the first surface 101 and the second surface 102 of the terminal body 10 are parallel can reduce the production difficulty.
[0043] Preferably, in the first preferred embodiment of the present utility model, as Figure 3 and Figure 6 shown, the crimping section 12 of the terminal body 10 includes two opposite side surfaces 120. Each side surface 120 is connected to the first surface 101 and the second surface 102, and a fillet is formed at the connection of each side surface 120 to the first surface 101 and at the connection to the second surface 102. That is, the cross-section of the crimping section 12 is in the shape of a rounded rectangle as Figure 3 shown when not deformed, as Figure 6As shown, when the crimping section 12 is clamped in the crimping hole 91, four-point contact is formed between the four rounded corners of the above-mentioned rounded rectangle and the hole wall of the crimping hole 91; through the design of the rounded corners, the crimping section 12 can be elastically deformed more smoothly, and the structures of the crimping section 12 and the crimping hole 91 are less likely to be damaged.
[0044] In addition, as Figure 7 shown, the first preferred embodiment of the present utility model further provides an electronic plug-in, which includes a housing 90 and several crimping terminals 80 provided as described above. The several crimping terminals 80 are spaced apart and arranged on the housing 90. Among them, 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 pin header, but is not limited to the above; through the several crimping terminals 80 as described above, the electronic plug-in can have the effects that the aforementioned crimping terminals 80 can be firmly crimped and combined, and are suitable for production and processing.
[0045] Please refer to Figure 8 and Figure 9 shown, the difference between the crimping terminal provided in the second preferred embodiment of the present utility model and the first preferred embodiment of the present utility model is that each side surface 120A of the crimping section 12 is arc-shaped, that is, each side surface 120A extends from the first surface 101 of the terminal body 10 to the second surface 102 of the terminal body 10 in an arc shape.
[0046] As Figure 10 shown, when the crimping section 12 is inserted and combined with the crimping hole 91, through the two arc-shaped side surfaces 120A, the contact area between the crimping section 12 and the hole wall of the crimping hole 91 can be increased, so that the crimping section 12 fits more closely to the hole wall of the crimping hole 91, the holding force for clamping in the crimping hole 91 can be increased, and the contact between the crimping section 12 and the hole wall of the crimping hole 91 is not easily 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.
[0047] The above description is only a preferred embodiment of the present utility model, and does not impose any formal restrictions on the present utility model. Any person with ordinary knowledge in the technical field, without departing from the scope of the technical solution proposed by the present utility model, makes equivalent embodiments with partial changes or modifications using the technical content disclosed by the present utility model, and without departing from the technical solution content of the present utility model, still belongs to the scope of the technical solution of the present utility model.
Claims
1. A crimping terminal, characterized in that: Include: A terminal body, which extends along an insertion direction and is elongated, and includes 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 embossed concave portion, which is concavely disposed on the crimping section from the first surface, wherein a distance between a bottom of the embossed concave portion and the second surface is defined as a residual thickness; and a punch hole extending from the bottom of the embossed concave portion through to the second surface, the punch hole being located within the range of the embossed concave portion, and the maximum width of the punch hole in a width direction orthogonal to the insertion direction being greater than or equal to the remaining thickness; The embossed concave portion and the punched hole enable the crimping section to form two elastic deformation portions spaced apart from each other.
2. The crimping terminal according to claim 1, characterized in that: 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.
3. The crimping terminal according to claim 1, characterized in that: The embossed concave portion is located on the first surface in the width direction and has a maximum width. The ratio of the maximum width of the punching hole to the maximum width of the embossed concave portion is between 0.3 and 0.6, including the end point values.
4. The crimping terminal according to claim 1, wherein: The embossed concave portion is located on the first surface and has a length in the insertion direction, the punching hole has a length in the insertion direction, and the ratio of the length of the punching hole to the length of the embossed concave portion is between 0.5 and 0.85, including the endpoint values.
5. The crimping terminal according to claim 4, characterized in that: The length of the punching hole is 2.1 mm, and the maximum width of the punching hole is 0.3 mm.
6. The crimping terminal according to any one of claims 1 to 5, characterized in that: The two surfaces of the terminal body are parallel.
7. The crimping terminal according to claim 6, characterized in that: The crimping section comprises two side surfaces which are opposite to each other, each of the side surfaces is connected to the two surfaces, and a fillet is formed at the connection between the side surface and each of the surfaces.
8. The crimping terminal according to claim 6, wherein: The crimping section includes two side surfaces that are 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.
9. An electronic component, characterized in that: It contains: a housing; and A plurality of crimping terminals according to any one of claims 1 to 8, wherein the plurality of crimping terminals are arranged on the housing at intervals.