ECU with fish eye needle and ECU

Abstract

The application provides an ECU fish-eye needle and an ECU, which are applied to the technical field of fish-eye needles and are embedded in a plastic shell through insert injection molding. One end of the fish-eye needle is located inside the plastic shell, and the other end is located outside the plastic shell. The fish-eye needle comprises a guide part, a fish-eye part, a base and a connecting needle. The fish-eye part and the base are in a strip shape under a top view, and the extension direction thereof is consistent with the extension direction of the connecting needle. Compared with the prior art, the extension direction of the fish-eye part is consistent with the extension direction of the connecting needle, so that the stress direction of the circuit board needle hole on the circuit board is perpendicular to the connection direction of the circuit board needle hole, the circuit board needle hole is less likely to be broken, the distance of the circuit board needle hole can be smaller, the distance of the fish-eye needle can be smaller, the ECU containing the fish-eye needle can be smaller, and the wiring harness end connector matched with the fish-eye needle is also smaller, so that the design freedom of the automobile is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fisheye needles, and in particular to a fisheye needle for an ECU and an ECU. Background Art

[0002] An automotive ECU (Electronic Control Unit), or electronic control unit, has stringent requirements for waterproofing and miniaturization. This ECU consists of a housing, circuit board, and sealant. The housing is made of plastic and contains a fisheye pin, which is injection-molded as an insert into the plastic body. One end of the pin is crimped to the circuit board, and the other end is connected to the wiring harness connector.

[0003] Using fisheye needles has the following advantages: a. There is no welding process, which improves product quality, is low-cost, and is environmentally friendly; b. Compared with soldering, it has a longer lifespan, higher strength, and a reliable electrical contact surface; c. Because the fisheye needle is insert-molded into the plastic body of the ECU housing, there is no gap between the fisheye needle and the plastic body. If sealant is poured on the top of the ECU circuit board, the ECU will have a higher waterproof level.

[0004] Currently, the fisheye direction of the fisheye needle is perpendicular to the length direction of the fisheye needle. As a result, when the circuit board is pressed onto the fisheye needle, the direction of the force applied to the holes corresponding to the fisheye needle on the circuit board is consistent with the direction of the connection between these holes. When the spacing between the fisheye needles is too small, cracks may occur between the two holes of the circuit board, which is not conducive to the miniaturization of the ECU.

[0005] Therefore, a new technical solution is needed to solve the problem of the fisheye part of the fisheye needle and the circuit board hole being subjected to the same force direction, so that the two holes of the circuit board are cracked. Summary of the Invention

[0006] In view of this, the embodiments of this specification provide a fisheye needle for ECU and ECU, which can effectively solve the technical problem that the force direction of the fisheye part of the fisheye needle is consistent with the force direction of the circuit board hole, causing cracks between the two holes of the circuit board, and meet the requirements of ECU miniaturization.

[0007] The embodiments of this specification provide the following technical solutions:

[0008] The embodiment of this specification provides a fisheye needle for ECU, which is injected into the plastic housing as an insert. One end of the fisheye needle is located inside the plastic housing, and the other end is located outside the plastic housing.

[0009] The fisheye needle includes a guide portion, a fisheye portion, a base, and a connecting needle. The base is embedded in the bottom of the plastic shell. The fisheye portion extends upward from the base in a direction perpendicular to the bottom of the plastic shell. A guide portion is provided on the top of the fisheye portion. The first end of the connecting needle is connected to the base embedded in the bottom of the plastic shell, and the second end extends to the outside of the plastic shell.

[0010] From a top-down perspective, the fisheye portion is long and strip-shaped, and its extension direction is consistent with the extension direction of the connecting needle.

[0011] In an optional embodiment, when viewed from above, the base is in the shape of an elongated strip, and its extending direction is consistent with the extending direction of the connecting needle.

[0012] The embodiment of this specification also provides an ECU, comprising: a fisheye pin, a plastic housing, and a circuit board, wherein the plastic housing is provided with a housing end connector, the housing end connector including a plurality of the above-mentioned fisheye pins, and the fisheye pins are injection molded into the interior of the plastic housing as inserts;

[0013] A first boss is provided on the side wall of the plastic housing. The circuit board is pressed onto the first boss inside the plastic housing through the guide portion of the fisheye needle. The circuit board pinhole of the circuit board is engaged with the fisheye portion of the fisheye needle.

[0014] The connection direction of a plurality of adjacent pinholes of the circuit board is perpendicular to the extension direction of the fisheye portion in a top-down perspective.

[0015] In an optional embodiment, the housing end connector is arranged on the outside of the side wall of the plastic housing and is composed of a plurality of cross arms. A communication port is formed between the cross arms. The second end of the connecting pin extends from the side wall of the plastic housing into the communication port.

[0016] The harness end connector is clamped with the horizontal wall and communicated with the circuit board through the second ends of a plurality of connecting pins.

[0017] In an optional embodiment, the connecting needle includes a first long strip, a bent section, and a second long strip, the second long strip is connected to the first long strip through the bent section, and the first long strip is parallel to the second long strip.

[0018] The first long strip is connected to a base embedded in the bottom of the plastic shell, the bent section is embedded in the side wall of the plastic shell, and the second long strip extends from the communicating port.

[0019] In an optional embodiment, the base of the fisheye needle is embedded in a second boss formed at the bottom of the plastic shell, and the second boss is connected to a side wall of the outer shell where the shell end connector is located.

[0020] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: the fisheye portion and the base of the fisheye needle are long strips in a top-down perspective, and their extension direction is consistent with the extension direction of the connecting needle, so that when the circuit board is pressed onto the fisheye needle, the force direction of the circuit board pinhole on the circuit board is perpendicular to the connection direction of the circuit board pinhole, and the circuit board pinhole is less likely to break, so that the distance between the circuit board pinholes can be smaller, the spacing of the fisheye needles can be smaller, the ECU containing the fisheye needles can be smaller, and the wiring harness end connector matched with the fisheye needle is also smaller, thereby increasing the freedom of automobile design. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a structural diagram of an ECU provided in an embodiment of the present application;

[0023] Figure 2 This is a structural diagram of an ECU housing provided in an embodiment of the present application;

[0024] Figure 3 This is a schematic structural diagram of the connecting parts of a fisheye needle provided in an embodiment of the present application;

[0025] Figure 4 This is a schematic structural diagram of a traditional fisheye needle provided in an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of a conventional fisheye pin and circuit board clamping structure provided in an embodiment of the present application;

[0027] Figure 6 This is a schematic structural diagram of a fisheye needle provided in an embodiment of the present application;

[0028] Figure 7 This is a schematic structural diagram of another fisheye needle provided in an embodiment of the present application;

[0029] Figure 8 This is a schematic diagram of a clamping structure between a fisheye pin and a circuit board provided in an embodiment of the present application;

[0030] Figure 9 This is a schematic structural diagram of another fisheye needle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0032] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0033] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0034] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0035] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0036] like Figure 1 As shown in FIG, the electronic control unit (ECU) of a car is composed of an ECU housing, a circuit board, and possibly other parts, such as sealant, etc. Figure 2 As shown, the ECU housing is composed of a plastic housing and a fisheye needle. The fisheye needle is injection molded into the plastic housing as an insert. Figure 3 As shown, one end of the fisheye needle is connected to the circuit board through a crimping process, and the other end is connected to the wiring harness connector.

[0037] like Figure 4As shown, the fish eye direction of the current fish eye needle is perpendicular to the length direction of the fish eye needle, which leads to the fact that when the circuit board is crimped to the fish eye needle, the force direction of the circuit board hole corresponding to the fish eye needle is not consistent with the connection direction of the circuit board hole. Figure 5 As shown, the force direction of the circuit board hole corresponding to the fish eye needle on the circuit board is consistent with the connection direction of the circuit board hole, and when the pitch A of the fish eye needle is too small, the circuit board hole between the two circuit board holes may be cracked, which is not conducive to the miniaturization of the ECU.

[0038] Therefore, the inventor finds that in order to improve the overall design freedom of the automobile and the miniaturization requirement of the ECU, a new fish eye needle can be designed, the pitch A of the fish eye needle is reduced, the circuit board hole is not cracked when the circuit board is crimped to the fish eye needle, the ECU is miniaturized, the corresponding wire harness connector is also small, and thus the overall design freedom of the automobile is improved.

[0039] Based on this, the embodiment of the present specification proposes a processing scheme as shown in the following figure. Figure 6 As shown, the fish eye part of the fish eye needle is consistent with the length direction of the fish eye needle, so that when the circuit board is crimped to the fish eye needle, the force direction of the circuit board hole on the circuit board is perpendicular to the connection direction of the circuit board hole.

[0040] The technical solutions provided by the embodiments of the present application are described below in combination with the drawings.

[0041] The embodiment of the present specification provides an ECU fish eye needle, which is insert molded into the plastic shell of the ECU, one end of the fish eye needle is located inside the plastic shell, and the other end is located outside the plastic shell, as shown in the following figure. Figure 7 As shown, the fish eye needle includes a guide part, a fish eye part, a base and a connecting needle, the base is embedded in the bottom of the plastic shell, the fish eye part extends upward from the base in a direction perpendicular to the bottom of the plastic shell, the top of the fish eye part is provided with the guide part, the first end of the connecting needle is connected with the base embedded in the bottom of the plastic shell, and the second end extends to the outside of the plastic shell.

[0042] The guide part is located at the top end of the fish eye part, and guides the left and right when the circuit board is crimped to the fish eye needle; the fish eye part is a key part of the fish eye needle, which connects the fish eye needle and the circuit board and plays a role of conducting, the first end of the connecting needle is connected with the base embedded in the bottom of the plastic shell, and the second end extends to the outside of the plastic shell and is connected with the wire harness end connector; when the fish eye needle is insert molded into the plastic shell of the ECU, the base can protect the fish eye needle from being damaged.

[0043] In the embodiments of this specification, the fisheye portion and / or the base of the fisheye needle are in the shape of an elongated strip when viewed from above, and their extension direction is consistent with the extension direction of the connecting needle. It should be noted that the extension direction of the elongated fisheye portion is the clamping direction of the fisheye portion in the pinhole of the circuit board. Compared with the existing fisheye needle scheme in which the extension direction of the fisheye portion is perpendicular to the direction of the connecting needle, when the fisheye needle in the present application is crimped onto the circuit board, the pinhole of the circuit board is less likely to break, the distance between the pinholes of the circuit board can be smaller, the spacing A of the fisheye needle can also be smaller, the ECU containing the fisheye needle can be smaller, and the wiring harness connector matched with the fisheye needle is also smaller, thereby achieving miniaturization of the ECU and improving the design freedom of the car.

[0044] like Figure 8 As shown, corresponding to a housing end connector on the ECU housing, a plurality of fisheye pins are set as a group. Accordingly, each fisheye pin in a group of fisheye pins corresponds to a circuit board pinhole, that is, a group of fisheye pins corresponds to a group of circuit board pinholes on the circuit board, and the number of circuit board pinholes matches the number of fisheye pins. Figure 8 Shown in the figure are a group of circuit board pinholes and a group of fisheye needles. The fisheye needles for ECU of the present application are used. When the circuit board is pressed onto the fisheye needles, the fisheye part of the fisheye needle is engaged with the circuit board pinholes. For a single fisheye needle, the extension direction of the fisheye part is consistent with the extension direction of the connecting needle. When a group of fisheye needles are engaged with the circuit board pinholes, the force direction of the circuit board pinholes is consistent with the extension direction of the fisheye part. The connection direction of a group of circuit board pinholes is perpendicular to the force direction of the circuit board pinholes, so that the circuit board pinholes are not subjected to the force of the fisheye needles in the connection direction, the force is reduced, and the circuit board is not easily broken. Furthermore, the spacing between the fisheye needles can be smaller, and the distance between two adjacent circuit boards in a group of circuit board pinholes can also be correspondingly smaller, thereby making the ECU smaller and the corresponding wiring harness connector smaller, thereby improving the design freedom of the car.

[0045] Further, if Figure 9As shown, the connecting needle comprises a first long strip, a bending section and a second long strip, the second long strip is connected with the first long strip through the bending section, and the first long strip is parallel to the second long strip. The first end of the first long strip is connected with the base, the second end of the first long strip is connected with the first end of the bending section, the second end of the bending section extends upward along the direction perpendicular to the extension direction of the first long strip until the second end of the bending section is connected with the first end of the second long strip, the bending section is embedded in the side wall of the plastic shell, and the second end of the second long strip extends to the outside of the plastic shell and extends out from the communication port. In the present application, the bending section can better cooperate with the shell end connector outside the plastic shell. When the height of the first long strip does not match the height of the communication port of the corresponding shell end connector, the bending section can make the height of the second long strip match the height of the communication port of the corresponding shell end connector, and the position and size of the shell end connector can be more flexibly set, so that the miniaturization of the ECU can be better realized, and the design freedom of the automobile can be improved.

[0046] It can be known that in the present application, the first long strip and the second long strip can be combined into one part, that is, on the same straight line, which can be set according to specific application occasions.

[0047] The fish-eye needle of the ECU in the present application can be manufactured by stamping processing.

[0048] The embodiment of the present application also provides an ECU, which comprises a fish-eye needle, a plastic shell and a circuit board, the plastic shell is provided with a shell end connector, the shell end connector comprises a plurality of fish-eye needles, and the fish-eye needle is embedded in the plastic shell as an insert; that is, the communication port of the shell end connector contains a group of fish-eye needles, and the fish-eye needle is embedded in the plastic shell as an insert, as shown in Figure 3 As shown, corresponding to each shell end connector, there is a group of fish-eye needles and a group of circuit board pinholes, the fish-eye needle extends into the communication port of the shell end connector, and the fish-eye needle is connected with the wire harness end connector when the wire harness end connector is clamped with the shell end connector.

[0049] Furthermore, a first boss is provided on the side wall of the plastic shell, and the circuit board is pressed onto the first boss inside the plastic shell through the guide part of the fisheye needle, so that the circuit board pinhole of the circuit board is clamped with the fisheye part of the fisheye needle; the base of the fisheye needle is embedded in the second boss formed at the bottom of the plastic shell, and the second boss is connected to the side wall where the connector at the shell end of the plastic shell is located; the connection direction of several adjacent circuit board pinholes is perpendicular to the extension direction of the fisheye part when viewed from above. When the circuit board is crimped onto the fisheye needle, the fisheye portion of the fisheye needle is snapped into engagement with the pinhole of the circuit board. For a single fisheye needle, the extension direction of the fisheye portion is consistent with the extension direction of the connecting needle. When a group of fisheye needles are snapped into engagement with the pinholes of the circuit board, the force direction of the pinholes of the circuit board is consistent with the extension direction of the fisheye portion. The connection direction of a group of pinholes on the circuit board is perpendicular to the force direction of the pinholes on the circuit board, so that the pinholes on the circuit board are not subjected to the force of the fisheye needle in the connection direction, the force is reduced, and the circuit board is not easily broken. Furthermore, the spacing between the fisheye needles can be smaller, and the distance between two adjacent circuit boards in a group of pinholes on a circuit board can also be correspondingly smaller, thereby making the ECU smaller and the corresponding wiring harness connector smaller, thereby increasing the design freedom of the car.

[0050] Furthermore, the shell end connector is arranged on the outside of the side wall of the plastic shell, and is composed of several cross arms. A connecting port is formed between the several cross arms. The second end of the connecting pin extends from the side wall of the plastic shell into the connecting port. The wiring harness end connector is clamped with the cross wall and is connected to the circuit board through the second ends of the several connecting pins.

[0051] Preferably, the connecting needle includes a first long strip, a bent section and a second long strip, the second long strip is connected to the first long strip through the bent section, the first long strip is parallel to the second long strip, the first long strip is connected to the base embedded in the bottom of the plastic shell, the bent section is embedded in the side wall of the plastic shell, and the second long strip extends from the connecting port.

[0052] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the product embodiments described later are relatively simple to describe because they correspond to the methods. For relevant parts, refer to the description of the system embodiments.

[0053] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An ECU comprising: A fisheye needle, a plastic housing, and a circuit board, wherein the plastic housing is provided with a housing end connector, characterized in that the housing end connector includes a plurality of fisheye needles, the fisheye needles are injection molded into the interior of the plastic housing as inserts, one end of the fisheye needle is located inside the plastic housing, and the other end is located outside the plastic housing. The fisheye needle includes a guide portion, a fisheye portion, a base, and a connecting needle. The base is embedded in the bottom of the plastic shell. The fisheye portion extends upward from the base in a direction perpendicular to the bottom of the plastic shell. A guide portion is provided on the top of the fisheye portion. The first end of the connecting needle is connected to the base embedded in the bottom of the plastic shell, and the second end extends to the outside of the plastic shell. One of the housing-end connectors is provided with a corresponding set of fisheye pins and a set of circuit board pinholes. A first boss is provided on the side wall of the plastic housing. The circuit board is pressed onto the first boss inside the plastic housing through the guide portion of the fisheye pin. The circuit board pinholes of the circuit board are engaged with the fisheye portion of the fisheye pin. The base of the fisheye pin is embedded in a second boss formed at the bottom of the plastic housing. The second boss is connected to the side wall of the plastic housing where the connector is located. The connection direction of several adjacent pinholes on the circuit board is perpendicular to the extension direction of the fisheye portion when viewed from above. When a group of fisheye pins are connected to the pinholes of the circuit board, the force direction of the pinholes of the circuit board is consistent with the extension direction of the fisheye part, and the connection direction of a group of pinholes of the circuit board is perpendicular to the force direction of the pinholes of the circuit board.

2. The ECU according to claim 1, wherein: The housing end connector is arranged on the outside of the side wall of the plastic housing and is composed of a plurality of cross arms. A communication port is formed between the plurality of cross arms. The second end of the connecting pin extends from the side wall of the plastic housing into the communication port. The harness end connector is snap-connected with the transverse wall and communicates with the circuit board through the second ends of a plurality of the connecting pins.

3. The ECU according to claim 2, wherein: The connecting needle includes a first long strip, a bent section, and a second long strip, wherein the second long strip is connected to the first long strip via the bent section, and the first long strip is parallel to the second long strip. The first long strip is connected to the base embedded in the bottom of the plastic shell, the bent section is embedded in the side wall of the plastic shell, and the second long strip extends from the communication port.

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