CN112670734A - Crimping terminal, signal receiving module and electronic equipment - Google Patents

Abstract

The invention discloses a crimping terminal applied to electrical connection between modules in an electric vehicle. The crimping terminal comprises a contact section, a connecting section and a guide section, wherein the contact section is formed by bending and curling continuous metal sheets and is used for being in crimping fit with a plated hole of a printed circuit board; the junction of the guide section and the contact section is provided with a plurality of through holes penetrating through the crimping terminal; the outer surface of the contact section is U-shaped, the bottom plane plays a supporting role, and at least one part of each of the two sides forms an arc surface matched with a plated hole of the printed circuit board. When the crimping terminal is in crimping fit with a plated hole of a printed circuit board, the two sides of the U shape deform inwards to contract so that the outer side is tightly jointed with the plated hole, and simultaneously the plane of the bottom of the U shape also deforms in an arc shape towards the round edge of the plated hole, so that the crimping terminal and the plated hole can be supported when being matched, and a larger friction force can be kept between the crimping terminal and the plated hole so as to meet the connection reliability of the crimping terminal and the plated hole.

Description

Crimping terminal, signal receiving module and electronic equipment

Technical Field

The invention relates to the technical field of automobile electrical systems, in particular to a crimping terminal, a signal receiving module and electronic equipment.

Background

With the development speed of electric vehicles and automobile communication becoming faster and faster, it is expected that the development of unmanned technology will greatly enrich the future world, intelligent interconnected development space is added for the traditional automobile industry, the automobile can independently drive by means of a 5G network, other vehicles and pedestrians can be automatically avoided in the driving process, so that traffic accidents are effectively avoided, and traffic efficiency is improved.

In order to realize unmanned driving and communication interconnection, more radar modules are required to be added to the automobile, and the signal processing capability and reliability of the automobile must be greatly improved. At present, the automobile electrical system is in a state shown in fig. 2 by matching the crimping terminal 1 commonly used in the industry with the printed circuit board as shown in fig. 1, wherein a plated hole 21 is formed on the printed circuit board, a plated layer 211 made of copper is coated on the inner side of the plated hole 21, and when the crimping terminal 1 is pressed into the plated hole 21 to be in contact with the plated layer to realize electrical connection, a signal received by the signal receiving module can be guided into an internal electronic circuit of the radar module. Here, the reliability of the connection of the crimp terminal 1 and the plated hole 21 of the printed circuit board 2 directly affects the operation processing result of the electronic circuit inside the radar module, and even affects the safety performance of the automobile.

Referring to fig. 2, the cross section of the crimp terminal 1 perpendicular to the length direction is a rectangle with rounded vertices, when the crimp terminal 1 is pressed into the plated hole 21 of the printed circuit board, the plated hole 21 is pressed to deform the plated hole 21, and after the plated hole 21 is deformed, a reverse pressure is applied to the crimp terminal 1, so that the plated hole 21 of the printed circuit board and the crimp terminal 1 are pressed against each other to generate a friction force, thereby realizing the contact between the crimp terminal 1 and the plated layer in the plated hole 21 and realizing the electrical reliable connection. Of course, the deformation degree of the plated hole 21 needs to be controlled to avoid the occurrence of the plating layer and the damage of the plated hole 21, and it is known from the regulations of IEC60352-5 that the plating layer deformation amount a of the plated hole 21 in fig. 2 should be less than 70 μm, and the thickness b of the deformed plated layer is not less than 8 μm (as shown in fig. 1) to ensure the reliability of the connection and avoid the damage of the plated layer and the plated hole 21.

The current crimp terminal 1 cannot maintain the structural integrity of the plated hole 21 while satisfying the requirement of reliable electrical connection with the printed circuit board.

Disclosure of Invention

The invention overcomes the defects of the prior art and provides a crimping terminal, a signal receiving module and electronic equipment. The purpose is to keep the complete structure of the plated hole of the printed circuit board on the premise that reliable electrical connection is realized by matching the crimping terminal and the printed circuit board, and meet the electrical connection of an automobile signal module.

In order to achieve the purpose, the invention adopts the technical scheme that: a crimp terminal, comprising: the contact section is formed by bending and curling continuous metal sheets and is used for being matched with a plated hole of a printed circuit board in a compression joint mode, the connecting section is positioned at one end of the contact section and is used for being connected with an external fixing piece, and the guide section is positioned at the other end of the contact section; the joint of the guide section and the contact section is provided with a plurality of through holes penetrating through the crimping terminal, and the number of the through holes is only two;

at least one part of the outer surface of the contact section forms an arc surface matched with the plated hole of the printed circuit board, the outer surface of the contact section is U-shaped, the bottom plane plays a supporting role, and at least one part of each of the two sides forms an arc surface matched with the plated hole of the printed circuit board.

In a preferred embodiment of the invention, the through holes are symmetrically arranged on both sides of the U-shape of the contact section.

In a preferred embodiment of the invention, the connecting section is formed with a kidney-shaped transition.

In a preferred embodiment of the invention, two middle points of the U-shaped cambered surfaces of the contact section, which are contacted with the plated holes, and the geometric center of the contact section form a stable triangular structure.

In a preferred embodiment of the invention, the outer side of each of said U-shaped ends must be rounded, not to have sharp edges.

In a preferred embodiment of the present invention, the inner side and the outer side of each U-shaped bottom are rounded R-shaped corners.

In a preferred embodiment of the present invention, the cross-sectional area of the guide section is smaller than that of the contact section in the arrangement direction of the connection section, the contact section, and the guide section.

In a preferred embodiment of the present invention, the cross-sectional area of the guide section decreases from the end of the guide section near the contact section to the free end of the guide section along the length of the contact section.

The present invention also provides a signal receiving module characterized by comprising a module body and the crimp terminal according to any one of claims 1 to 8;

the module body is provided with an external fixing piece for signal output, and the external fixing piece is connected with the connecting section of the crimping terminal.

The invention also provides an electronic device comprising a processing module and a signal receiving module as claimed in claim 9; the processing module is provided with a printed circuit board, a plated hole is formed in the printed circuit board, and the crimping terminal of the signal receiving module is used for being in crimping fit with the plated hole.

The invention solves the defects in the background technology, and has the following beneficial effects:

(1) the invention provides a crimping terminal which is of a shuttle-shaped structure with two thin ends and a thick middle part, wherein a through hole penetrating through the crimping terminal is formed at the boundary of a guide section and a contact section, the crimping terminal is extruded and inserted into a plated hole on a printed circuit board, so that the crimping terminal is in extrusion contact with the plated layer in the plated hole to realize electrical connection, and the stability and reliability of the electrical connection are kept by means of friction force generated by mutual extrusion between the crimping terminal and the plated hole, thereby keeping the structural integrity of the plated hole of the printed circuit board.

(2) The through hole of the invention can reduce the extrusion force applied to the plated hole when the crimping terminal is inserted into the plated hole of the printed circuit board, thereby reducing the damage of the crimping terminal to the internal circuit of the printed circuit board.

(3) The geometric center of the U-shaped contact section of the invention is equivalent to a fulcrum of the crimping terminal; two middle points of the contact between the double cambered surfaces at the two sides of the U-shaped outer surface and the plated hole of the printed circuit board are equivalent to the other two supporting points of the contact section; the three supporting points form a triangular structure, so that the structural stability of the crimping terminal is ensured, and the greater friction force is kept between the crimping terminal and the plated hole so as to meet the connection reliability of the crimping terminal and the plated hole.

(4) The contact section of the crimping terminal in the signal receiving module is in crimping fit with the plated hole of the printed circuit board, so that the signal receiving module is electrically connected with the processing module. Because the crimping terminal is tightly matched with the printed circuit board, the electronic equipment can bear the shaking caused by the bumping driving process of the automobile, and the reliability of electrical connection is ensured; certainly, the surface cooperation between the contact section of crimping terminal and the plated hole inner wall of printed circuit board has reduced the destroyed risk of plated hole, further optimizes electrical connection's reliable and stable.

(5) The crimping terminal provided by the invention covers various material specifications, is suitable for plated holes of processing modules with different sizes, can be plated or can realize functions of different hardness, flexibility and the like on materials, and influences the crimping matching between the crimping terminal and the plated holes.

Drawings

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

fig. 1 is a schematic view showing a structure of a crimping terminal in the prior art;

FIG. 2 is a schematic cross-sectional view of a prior art crimp terminal mated with a plated hole of a printed circuit board;

fig. 3 is a schematic structural view of a crimp terminal 1a of a hollow structure in the related art;

FIG. 4a is a schematic cross-sectional view taken along line A-A in FIG. 3;

fig. 4b is a schematic sectional view of a crimp terminal 1b of a solid structure in the prior art;

FIG. 4c is a schematic sectional view showing another solid crimp terminal 1b of the prior art;

FIG. 4d is a cross-sectional view of a C-shaped crimp terminal 1C of the prior art mated with a plated hole of a printed circuit board;

fig. 5 is a schematic structural view of a crimp terminal according to an embodiment of the present invention;

fig. 6 is a front view of a crimp terminal according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view taken along line B-B in FIG. 8;

fig. 8 is a schematic cross-sectional view illustrating a press-fit terminal according to an embodiment of the present invention engaged with a plated hole of a printed circuit board;

fig. 9 is a schematic structural view illustrating a connection between a crimp terminal and an external fixing member according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a signal receiving module according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

in the figure: 1. a crimp terminal; 11. a guide section; 12. a contact section; 13. a connecting section; 14. through holes;

2. a printed circuit board; 21. plating holes; 211. plating;

3. an electronic device; 4. a signal receiving module; 41. a module body; 42. externally connecting a fixing piece; 5. and a processing module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention. Furthermore, the terms "first," "second," and the like 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Based on the basic structure of the crimp terminal 1 shown in fig. 1, a crimp terminal 1a having a hollow structure, which is common at present, is shown in fig. 3, and a hollow may be formed in a middle portion M of the crimp terminal 1a, and a cross-sectional structure of the crimp terminal 1a at a-a shown in fig. 3 is shown in fig. 4 a). In combination with the fitting form of the crimp terminal 1 and the printed circuit board 2 shown in fig. 2, in order to increase the frictional force for maintaining reliable connection when the crimp terminal 1a is fitted into the plated hole 21 of the printed circuit board 2, a simple support Z may be added to the hollow area M of the crimp terminal 1a shown in fig. 4a to transition to the crimp terminal 1b of a solid structure (the external shape of the crimp terminal 1b is similar to that of the crimp terminal 1a shown in fig. 3, and the schematic external shape structure diagram is omitted here, and the sectional schematic view of the hollow area M of the crimp terminal 1b is shown only by fig. 4b and c), so as to obtain a larger holding force; however, in comparison with the hollow crimp terminal 1a shown in fig. 3, the solid crimp terminal 1b shown in fig. 4b and 4c has a rectangular rounded shape as the outer contour for pressing the plated hole 21, and the contact area with the inner wall of the plated hole 21 is not changed, while the solid crimp terminal 1b applies a larger pressing force to the plated hole 21, and the damage to the plated hole 21 is increased, and the connection requirement may not be satisfied. As shown in fig. 4d, the cross-sectional structure of the fitting structure between the C-shaped crimp terminal 1C and the plated hole 21 of the printed circuit board 2 is schematically illustrated, and the friction force generated by the pressing between the crimp terminal 1C and the plated hole 21 is maintained only by the elastic force generated by the deformation of the crimp terminal 1C itself, which cannot satisfy the application scenario with severe vibration, and is easy to have risks such as loosening and falling off, and the connection reliability is low, and there is a possibility of function failure.

It can be seen that the crimp terminal 1a, the crimp terminal 1b and the crimp terminal 1c cannot meet the electrical connection requirement of the automotive industry with a complicated application environment, and therefore, the embodiment of the present application provides a crimp terminal 1 as shown in fig. 5 to keep the structural integrity of the printed circuit board 2 on the premise of meeting reliable electrical connection (the engagement between the crimp terminal 1 and the printed circuit board 2 is not shown in fig. 5). Specifically, fig. 5 shows a three-dimensional structure of a crimp terminal 1 provided in an embodiment of the present application, where the crimp terminal 1 is formed by bending and bending a continuous metal sheet, and includes a guiding section 11, a contact section 12, and a connecting section 13 along a length direction thereof, and of course, the guiding section 11 and the contact section 12 are in smooth transition, and the connecting section 13 and the contact section 12 are also in smooth transition. Here, the arrangement direction of the guide section 11, the contact section 12, and the connection section 13 is set to be the longitudinal direction of the crimp terminal 1. The connecting section 13 is connected with an external fixing piece, the guide section 11 passes through the plated hole 21 of the printed circuit board 2, and the contact section 12 is contacted with the inner side of the plated hole 21. In the arrangement direction of the guide section 11, the contact section 12 and the connecting section 13, the material specification is 0.4mm, 0.6, 0.8, 1.0, 1.2mm, and the ratio of the length ranges of the guide section 11, the contact section 12 and the connecting section 13 is 4-5: 1: 4-5, the error between the design length of each section of the terminal and the actual manufacturing forming is +/-0.05 mm. Along the arrangement direction of the guide section 11, the contact section 12 and the connecting section 13, the cross-sectional area of the guide section 11 is smaller than that of the contact section 12, and along the length direction of the contact section 12, the cross-sectional area of the guide section 11 is gradually reduced from one end of the guide section 11 close to the connecting contact section 12 to the free end of the guide section 11, so that the whole crimping terminal 1 is in a shuttle-shaped structure with thin two ends and thick middle when viewed from the front.

The guide section 11 in order to guide the contact section 12 into the plated hole 21 of the printed circuit board 2, the guide section 11 needs to be able to pass through the plated hole 21 smoothly, and thus the cross-sectional area of the guide section 11 needs to be smaller than the cross-sectional area of the contact section 12 in the direction perpendicular to the length direction of the contact section 12. In fig. 5 and 6, which show the structure of the crimp terminal 1, the guide section 11 has a tapered structure, and the cross-sectional area of the guide section 11 is gradually reduced from the end for connecting the contact section 12 to the free end (i.e., the end of the guide section 11 away from the contact section 12).

The outer surface of the contact section 12 is U-shaped, the bottom plane has a supporting function, and at least a part of each of the two sides forms an arc surface for matching with the plated hole 21 of the printed circuit board 2, so that when the press-fit terminal 1 is press-fitted with the printed circuit board 2, a part of the outer surface of the contact section 12 is press-fitted with the inner wall of the plated hole 21 of the printed circuit board 2. The U-shaped section has an axis extending along the arrangement direction of the connecting section 13, the contact section 12 and the guide section 11, when the crimp terminal 1 is in press fit with the plated hole 21 of the printed circuit board 2, the arrangement direction of the connecting section 13, the contact section 12 and the guide section 11 of the crimp terminal 1 is parallel to the axis of the plated hole 21, part of the outer surface of the contact section 12 is in fit with the inner wall of the plated hole 21, and the axis of the U-shaped section is collinear with the axis of the plated hole 21. The partial surface of contact segment 12 and the two face cooperations of plated hole 21 inner wall equivalent to symmetry have great area of contact between the two, and crimping terminal 1 is dispersed to the force of plated hole 21 application for the extrusion force that plated hole 21 unit area received reduces, and then plated hole 21's deformation reduces, can reduce crimping terminal 1 to plated hole 21's destruction degree, guarantees plated hole 21's integrality as far as possible. When the crimping terminal 1 is in crimping fit with the plated hole 21 of the printed circuit board 2, the two sides of the U shape deform inwards to contract so that the outer side is tightly jointed with the plated hole 21, and simultaneously the plane of the bottom of the U shape also deforms in an arc shape towards the round edge of the plated hole 21, so that the crimping terminal 1 and the printed circuit board 2 are stably and reliably connected by providing support for the whole structure when the crimping terminal 1 is matched with the plated hole 21 of the printed circuit board 2; at this time, two symmetrical surface contacts are formed at the contact portions of the U-shaped sides of the contact section 12 contacting the plated hole 21, which ensures the structural stability of the crimp terminal 1 and also can maintain a large frictional force between the crimp terminal 1 and the plated hole 21 to satisfy the reliability of the connection between the crimp terminal 1 and the plated hole 21.

The diameter of the contact section 12 is larger than that of the plated hole 21, when the contact section 12 enters the plated hole 21 of the printed circuit board 2, the contact section 12 is in interference fit with the plated hole 21, the contact section 12 presses the plated hole 21 of the printed circuit board 2, friction force is generated between the contact section 12 and the plated hole 21, and the friction force can keep the stable and reliable electrical fit between the crimp terminal 1 and the printed circuit board 2. It can be understood that, since the crimp terminal 1 in the present embodiment is formed by bending a continuous metal plate, the surface roughness of the contact section 12 can be controlled in the metal plate rolling process to obtain a lower roughness, when the contact section 12 is press-fitted with the plated hole 21 of the printed circuit board 2, the roughness of the contact surface of the contact section 12 of the crimp terminal 1 for fitting the plated hole 21 can be reduced to one tenth or more of the roughness of the contact surface of the crimp terminal 1 (such as the crimp terminal 1b shown in fig. 4b or the crimp terminal 1c shown in fig. 4 c) for fitting the plated hole 21 of the common solid structure, further reducing the damage degree to the plated hole 21 of the printed circuit board 2.

It should be noted that, the printed circuit board 2 provided by the present invention is formed with a plated hole 21, the inner side of the plated hole 21 is coated with a plated layer 211 made of copper, and when the press-fit terminal 1 is pressed into the plated hole 21 to contact with the plated layer 211 to realize electrical connection, the signal received by the signal receiving module can be guided into the internal electronic circuit of the radar module. Here, the reliability of the connection of the crimp terminal 1 and the plated hole 21 of the printed circuit board 2 directly affects the operation processing result of the electronic circuit inside the radar module, and even affects the safety performance of the automobile.

The crimp terminal provided by the invention can be plated or treated to realize functions of different hardness, flexibility and the like, for example, in the preparation process of the crimp terminal 1, the high hardness of the tough surface of the core part can be realized by heat treatment of high-quality carbon structural steel and alloy steel, the heat treatment can obtain a martensite structure through quenching and low-temperature tempering, and the surface quenching is generally carried out on the crimp terminal 1. The crimp terminal 1 of the present invention has a slightly high flexibility during the manufacturing process, and when the contact section 12 of the crimp terminal 1 contacts with the inner wall of the plated hole 21, the contact section 12 is more easily deformed and electrically connected with the inner wall of the plated hole 21. However, the crimp terminal 1 has too high flexibility in manufacturing, and is likely to be deformed too much or fail to return to its original shape when it is connected to the plated hole 21, thereby affecting electrical connection.

There are other means such as shot peening plus surface strength that affect the press fit between the crimp terminal and the plated hole.

Fig. 6 is a front view of a crimp terminal according to an embodiment of the present invention, and shows a case where two through holes 14 are provided symmetrically with respect to a longitudinal direction in the crimp terminal 1. A through hole 14 penetrating through the crimp terminal 1 is opened at a boundary between the guide section 11 and the contact section 12. The number of the through holes 14 is not limited, and may be one pair, two pairs or more of through holes symmetrically arranged with respect to both sides of the U-shape of the contact section, in order that the guide section 11 enters the plated hole 21 first during the insertion of the crimp terminal 1 into the plated hole 21 of the printed circuit board 2, and these through holes 14 can reduce the pressing force applied to the plated hole 21 when the crimp terminal 1 is inserted into the plated hole 21 of the printed circuit board 2 when the connection of the guide section 11 and the contact section 12 enters the plated hole 21, so that the damage of the crimp terminal 1 to the internal circuit of the printed circuit board 2 can be reduced. The present embodiment preferably has a pair of through holes.

Fig. 7 shows a cross-sectional view of the contact section 12 of the crimp terminal 1 provided by the present invention in a direction perpendicular to the length direction of the crimp terminal 1. The U-shaped straight line parts on two sides of the outer surface of the contact section 12 are extruded by the plated hole 21 of the printed circuit board 2 to form two arc surfaces K, the two arc surfaces K extend along the length direction of the crimping terminal 1 and have axial leads parallel to the length direction of the crimping terminal 1, and the two arc surfaces K are symmetrical by the circle center of the plated hole 21; when the crimp terminal 1 is fitted to the plated hole 21 of the printed circuit board 2, the arc surface K is adapted to contact and fit with the inner wall of the plated hole 21. When the contact section 12 of the crimp terminal 1 is in press fit with the plated hole 21 of the printed circuit board 2, a schematic cross-sectional structure diagram (the printed circuit board 2 is omitted in fig. 8, and the plated hole 21 is shown in a solid structure) of fig. 8 when the contact section 12 is in press fit with the plated hole 21 is obtained by combining the cross-sectional angle shown in fig. 7, a double arc surface K formed on the outer surface of the contact section 12 is in symmetrical surface fit with the inner wall of the plated hole 21, which has a large contact area, so that the force applied by the crimp terminal 1 to the plated hole 21 is uniformly dispersed, the extrusion force applied by the plated hole 21 per unit area is reduced, and the deformation of the plated hole 21 due to extrusion is reduced, thereby reducing the damage degree of the crimp terminal 1 to the plated hole 21, and ensuring the integrity of the plated hole. Here, the surface-fitting contact area between the crimp terminal 1 and the plated hole 21 of the printed circuit board 2 is equivalent to 2 times the fitting contact area between the crimp terminal 1 of a common solid structure (such as the crimp terminal 1b shown in fig. 4b or the crimp terminal 1c shown in fig. 4 c) and the plated hole 21 of the printed circuit board 2; meanwhile, the outer surfaces of the two U-shaped arm portions 121b and 121a of the crimp terminal 1 respectively form the double arc surfaces K to contact with the plated hole 21 of the printed circuit board 2, so that support is provided for the whole structure when the crimp terminal 1 is matched with the plated hole 21 of the printed circuit board 2, the friction force between the crimp terminal 1 and the plated hole 21 of the printed circuit board 2 is improved, and the crimp terminal 1 and the printed circuit board 2 are stably and reliably connected.

With continued reference to fig. 8, a schematic cross-sectional view of the contact section 12 engaged with the plated hole 21 is shown, wherein a geometric center Q1 of the contact section 12 is equivalent to a fulcrum of the crimp terminal 1; two middle points of the double arc surfaces K contacted with the plated holes 21 of the printed circuit board 2 are equivalent to the other two supporting points of the contact section 12; the three supporting points form a triangular structure, so that the structural stability of the crimping terminal 1 is ensured, and a larger friction force is kept between the crimping terminal 1 and the plated hole 21 so as to meet the connection reliability of the crimping terminal 1 and the plated hole 21. According to the specification of IEC60352-5, the crimp terminal 1 provided by the invention is in press fit with the plated hole 21 of the printed circuit board 2, the deformation amount a of the plated layer 211 of the plated hole 21 satisfies the condition of less than 70 μm, and the thickness b of the plated layer 211 after deformation satisfies the condition of not less than 8 μm.

The second technical scheme adopted by the invention is as follows: in order to realize the connection of the signal terminal of one electrical module with the printed circuit board 2 of another electrical module, fig. 9 shows a schematic structural diagram of the connection of the crimp terminal and the external fixture, and a schematic structural diagram of the connection section 13 of the crimp terminal 1 and the external fixture 42 are shown, where the external fixture 42 belongs to the electrical module, if the external fixture 42 corresponds to the signal output terminal of the electrical module, the crimp terminal 1 corresponds to the signal output interface of the electrical module, and if the external fixture 42 corresponds to the signal input terminal of the electrical module, the crimp terminal 1 corresponds to the signal input interface of the electrical module. In order to adapt to the simplified transition characteristic between the connecting section 13 and the external fixing member 42, the connecting section 13 may be formed with a waist-shaped transition N, so that the whole crimp terminal 1 has a shuttle-shaped structure with thin ends and thick middle. The embodiment of the present application further provides a signal receiving module 4, where the signal receiving module 4 includes a module body 41, the module body 41 is configured to receive an external signal, and of course, the module body 41 needs to transmit the received signal to another module (not shown in fig. 10), and therefore, the module body 41 has an external fixing member 42 as a signal output end, and the external fixing member 42 is connected with any one of the crimping terminals 1 provided in the foregoing embodiment, so as to implement electrical connection between the signal receiving module 4 and another module by matching the crimping terminal 1 with a printed circuit board 2 (not shown in fig. 10) of another module. As shown in fig. 10, an external fixing member 42 as a signal output terminal of the module body 41 is connected to the connection section 13 of the crimp terminal 1.

It should be noted that, in the crimp terminal 1 provided by the present invention, along the arrangement direction of the guide section 11, the contact section 12 and the connection section 13, the selection of the length ranges of the guide section 11, the contact section 12 and the connection section 13 can affect the electrical connection between the crimp terminal 1 and the external fixing member 42, and the larger the length ratio of the contact section 12 is, the stronger the signal input or output between the crimp terminal 1 and the external fixing member 42 is.

The third technical scheme adopted by the invention is as follows: as shown in fig. 11, the embodiment of the present application further provides an electronic device 30, and such an electronic device 3 may be applied to an electrical system of an automobile, for example, a radar-related device of an automobile. The electronic device 3 may include a processing module 5 and any of the signal receiving modules 4 described above, and the processing module 5 is provided with the printed circuit board 2, which corresponds to an internal circuit of the processing module 5. The contact section 12 of the crimping terminal 1 in the signal receiving module 4 is in crimping fit with the plated hole of the printed circuit board 2, so that the signal receiving module 4 is electrically connected with the processing module 5. Because the crimping terminal 1 is tightly matched with the printed circuit board 2, the electronic equipment 3 can bear the shake caused by the bumping driving process of the automobile, and the reliability of electrical connection is ensured; of course, the surface fit between the contact section 12 of the crimp terminal 1 and the inner wall of the plated hole 21 of the printed circuit board 2 reduces the risk of the plated hole 21 being damaged, and further optimizes the stability and reliability of the electrical connection.

When the crimping terminal 1 is inserted into the plated hole 21 of the printed circuit board 2 to realize crimping matching, the free end of the guide section 11 firstly enters the plated hole 21 and guides the guide section 11 to completely penetrate through the plated hole 21 to lead the contact section 12 to extend into the plated hole 21 to be matched with the plated hole 21, so that the electrical connection between the crimping terminal 1 and the printed circuit board 2 is realized. A plurality of through holes penetrating through the crimping terminal 1 can be further arranged at the boundary of the guide section 11 and the contact section 12, so that the pressing force applied to the plated hole 21 by the crimping terminal 1 when the crimping terminal 1 is inserted into the plated hole 21 can be reduced, and the damage of the crimping terminal 1 to the internal circuit of the printed circuit board 2 can be reduced. The connecting section 13 of the crimp terminal 1 is used for connecting the external fixing member 42, the external fixing member 42 may be a signal output end of the signal receiving module 4, and when the connecting section 13 of the crimp terminal 1 is connected with the external fixing member 42 of the signal receiving module 4, the crimp terminal 1 may be used as a signal output port of the signal receiving module 4 to be matched with the printed circuit board 2 of another module to realize electrical connection.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, the word "comprising" does not exclude the presence of data or steps not listed in a claim.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A crimp terminal, comprising: the contact section is formed by bending and curling continuous metal sheets and is used for being matched with a plated hole of a printed circuit board in a compression joint mode, the connecting section is positioned at one end of the contact section and is used for being connected with an external fixing piece, and the guide section is positioned at the other end of the contact section; the joint of the guide section and the contact section is provided with a plurality of through holes penetrating through the crimping terminal, and the number of the through holes is only two;

at least one part of the outer surface of the contact section forms an arc surface matched with the plated hole of the printed circuit board, the outer surface of the contact section is U-shaped, the bottom plane plays a supporting role, and at least one part of each of the two sides forms an arc surface matched with the plated hole of the printed circuit board.

2. A crimp terminal according to claim 1, wherein: the through holes are symmetrically arranged on two sides of the U shape of the contact section.

3. A crimp terminal according to claim 2, wherein: the connecting section is formed with a kidney transition.

4. A crimp terminal according to claim 1, wherein: two middle points of the U-shaped cambered surfaces of the contact section, which are contacted with the plated holes, and the geometric center of the contact section form a stable triangular structure.

5. A crimp terminal according to claim 1, wherein: the outside of each of said U-shaped ends must be rounded off and not be provided with sharp edges.

6. A crimp terminal according to claim 1, wherein: and the inner side and the outer side of each U-shaped bottom are smooth R corners.

7. A crimp terminal according to claim 1, wherein: the cross-sectional area of the guide section is smaller than that of the contact section along the arrangement direction of the connection section, the contact section and the guide section.

8. The crimp terminal according to claim 7, wherein: along the length direction of the contact section, the cross-sectional area of the guide section is gradually reduced from the end, close to the connection section, of the guide section to the free end of the guide section.

9. A signal receiving module characterized by comprising a module body and the crimp terminal according to any one of claims 1 to 8;

the module body is provided with an external fixing piece for signal output, and the external fixing piece is connected with the connecting section of the crimping terminal.

10. An electronic device comprising a processing module and the signal receiving module of claim 9; the processing module is provided with a printed circuit board, a plated hole is formed in the printed circuit board, and the crimping terminal of the signal receiving module is used for being in crimping fit with the plated hole.

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