Connector for PCBA (printed circuit board assembly) connection and inverter using connector

Abstract

The utility model provides a connector for PCBA (Printed Circuit Board Assembly) connection and an inverter using the connector. The connector comprises a plurality of pairs of contact pins and jacks, and the contact pins and the jacks are inserted in a one-to-one mode to achieve electric connection. Wherein the contact pin comprises a contact pin tail part, a contact pin head part and a flexible connecting part, and the flexible connecting part is connected between the contact pin tail part and the contact pin head part and has the capability of freely changing directions; a guide mechanism is arranged in the jack, the guide mechanism is in an open state before the head part of the contact pin is aligned with the jack, and the guide mechanism is gradually closed until the guide mechanism is attached to the flexible connecting part when the head part of the contact pin is aligned with the jack and begins to move downwards. The head part of the contact pin can freely swing in a small stress state, the insertion hole can be smoothly centered through cooperation of the guide mechanism, the guide mechanism provides protection for the flexible connection part to resist external stress in the insertion process, deformation or bending of the flexible connection part is avoided, and the service life of the flexible connection part is prolonged. The problem that the PCBA cannot be assembled when the assembly tolerance between the PCBAs exceeds the fit clearance of the connector is solved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connectors, and in particular to a connector for PCBA connection and an inverter using the connector. Background Art

[0002] Connectors are generally divided into two parts: the pin and the socket. The part with the pin is the pin, and the part with the hole is the socket. The pin with a positive contact is called a male plug, and the socket with a negative contact is called a female plug.

[0003] A control device generally has multiple assembly structures, and each assembly structure has a large number of structural parts. Taking the inverter as an example, there are many PCBAs (Printed Circuit Board Assemblies) in the inverter, and the number of connectors used for connecting points between PCBAs is relatively large. Due to the processing errors of each structural part, the more structural parts there are, the greater the cumulative assembly tolerance. When multiple PCBAs need to be connected to each other, if the assembly tolerance exceeds the matching clearance of the connector itself, the pins and sockets of the connector cannot be accurately aligned.

[0004] Since the pins of connectors are generally made of copper T2 material, which is relatively hard compared to metal wires, when the pins are offset outside the sockets of the connectors due to assembly tolerance, they cannot be corrected by self-adjustment of the pins. Moreover, when the number of connectors between PCBAs exceeds 3, not only the horizontal but also the vertical insertion of the connectors must be considered. However, due to the increased assembly tolerance, it is difficult to assemble through automation, which affects production timeliness and requires the possibility of increased manual operation, affecting manufacturing costs. Utility Model Content

[0005] Based on the technical problems existing in the background technology, the present application aims to propose a connector for PCBA connection and an inverter using the connector, so as to solve the problem that PCBAs cannot be assembled when the assembly tolerance between them exceeds the fitting clearance of the connector itself.

[0006] To solve the above problems, this application adopts the following technical solutions:

[0007] On the one hand, the present application proposes a connector for PCBA connection, comprising a plurality of pairs of pins and sockets, wherein the pins and the sockets are plugged one by one to achieve electrical connection, wherein:

[0008] The plug pin comprises a plug pin tail, a plug pin head and a flexible connection portion, wherein the flexible connection portion is connected between the plug pin tail and the plug pin head and has the ability to change direction freely;

[0009] A guide mechanism is provided in the socket. Before the pin head is not centered in the socket, the guide mechanism is in an open state. When the pin head is centered in the socket and starts to move downward, the guide mechanism is gradually closed until it fits with the flexible connecting portion.

[0010] On the other hand, the present application provides an inverter, including a plurality of PCBAs, wherein the PCBAs are connected with each other using the aforementioned connector.

[0011] Compared with the prior art, the beneficial effects of this application are:

[0012] The connector for PCBA connection proposed in the present application includes several pairs of pins and sockets. On the one hand, compared with the pins of the existing structure, the pins of the present application are composed of three components: a pin tail, a pin head and a flexible connection part, wherein the flexible connection part is connected between the pin tail and the pin head, and has the ability to change direction freely, so that the pin head can swing freely under a small force state; on the other hand, compared with the socket of the existing structure, a guide mechanism is provided in the socket of the present application, and before the pin head is not centered on the socket, the guide mechanism is in an open state, and when the pin head is centered on the socket and starts to move downward, the guide mechanism is in an open state. The guide mechanism gradually closes until it fits with the flexible connection part; therefore, when the assembly tolerance between the PCBAs exceeds the fitting clearance of the connector itself, the pin head can be changed in direction when it swings freely, and the guide mechanism cooperates to make the pin head smoothly align with the socket. During the insertion process, the guide mechanism provides protection for the flexible connection part against external stress, avoids deformation or bending of the flexible connection part, and guides the pin head to be smoothly and completely inserted into the socket, effectively solving the problem of being unable to assemble, avoiding the situation where the automated production line cannot be assembled, and also avoiding the excessive cost of manufacturing high-precision tooling.

[0013] The inverter proposed in the present application can effectively reduce assembly risks, high-precision tooling costs, and design difficulty by using the aforementioned connectors to connect the PCBAs therein.

[0014] The above description of the technical solution of the present application is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the preferred embodiments of the present application will be described in the specific implementation method part below. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are only used to illustrate specific embodiments and are not considered to be limiting of the present application. In the entire drawings, the same reference symbols represent the same components. In the drawings:

[0016] Figure 1A schematic diagram of the structure of the pins of the connector proposed in the embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the process state of inserting a pin into a socket in an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the structure of the jack of the connector proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0020] The design concept of the present application is to solve the problem in the prior art that PCBAs cannot be assembled when the assembly tolerance between them exceeds the fitting clearance of the connector itself, and to propose a connector for PCBA connection, in which a flexible connection portion is added to the pin so that the pin head can swing freely under a small force state; a guide mechanism is provided in the socket to cooperate with the pin head to smoothly center the socket, and during the insertion process of the pin head, the flexible connection portion is provided with protection against external stress, thereby avoiding deformation or bending of the flexible connection portion and guiding the pin head to be smoothly and completely inserted into the socket.

[0021] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] See also Figure 1-Figure 3 As shown, the embodiment of the present application proposes a connector for PCBA connection, including a plurality of pairs of pins 1 and sockets 2, wherein the pins 1 and sockets 2 are plugged one by one to achieve electrical connection; wherein,

[0024] The pin 1 includes a pin tail 11, a pin head 12 and a flexible connection portion 13. The flexible connection portion 13 is connected between the pin tail 11 and the pin head 12 and has the ability to change direction freely.

[0025] A guide mechanism 22 is provided in the socket 2. Before the pin head 12 is not centered in the socket 2, the guide mechanism 22 is in an open state. When the pin head 12 is centered in the socket 2 and starts to move downward, the guide mechanism 22 gradually closes until it fits with the flexible connecting portion 13.

[0026] Figure 2This is a schematic diagram of the process state of inserting a pin into a socket in an embodiment of the present application, wherein: Figure 2 (a) is a diagram showing the state in which the pin head 12 is aligned with the socket 2 and starts to move downward; Figure 2 (b) is a state diagram of the pin head 12 being fully inserted into the jack 2. As the pin head 12 moves downward, the guide mechanism 22 gradually closes from the open state. After the pin head 12 is fully inserted, the guide mechanism 22 is fully closed and fits with the flexible connection portion 13.

[0027] According to some embodiments of the present application, the flexible connection portion 13 is made of pure metal low-hardness material, and its shape includes but is not limited to sheet and wire. In terms of process implementation, the flexible connection portion 13 can be electrically connected to the pin tail 11 and the pin head 12 by welding, hot melting or crimping. The embodiment of the present application does not limit the connection method. Since the flexible connection portion 13 has the ability to change direction freely, the pin head 12 can swing freely under a small force state. Through the cooperation of the guide mechanism 22 in the socket 2, even if the assembly tolerance between the PCBA exceeds the fitting clearance of the connector itself, the pin head 12 can be smoothly centered in the socket.

[0028] According to some embodiments of the present application, see Figure 1 The schematic diagram of the structure of the plug pin 1 shows that the top of the plug pin head 12 has a pointed structure 121, and the pointed structure 121 plays a guiding role when the plug pin head 12 is centered on the plug hole 2. Preferably, the height of the pointed structure 121 is 1 / 2 of the height of the plug pin head 12. In other words, the rear end of the plug pin head 12 has a conventional square structure that accounts for half of its height, and the cross-sectional dimensions of the square structure are the same as the structural cross-sectional dimensions of the pin tail 11. The plug pin head 12 with such a structure, on the one hand, can make good use of the guiding effect of the pointed structure 121 at the top to center the plug hole 2 before insertion, and on the other hand, after being fully inserted, can make good use of the square structure at the rear end to fit closely with the hole wall of the plug hole 2 to avoid loose insertion.

[0029] Figure 3 This is a schematic diagram of the structure of the jack of the connector proposed in the embodiment of the present application, wherein: Figure 3 (a) is a schematic diagram of the structure of a single guide page; Figure 3 (b) is a schematic diagram of a half-section structure of the jack. According to some embodiments of the present application, in combination with Figure 2 and Figure 3The guide mechanism 22 includes two symmetrical guide pages 221, each guide page 221 is in the shape of a groove with two ends open, wherein the width of the groove bottom is equivalent to the thickness of the pin tail 11, the length of the groove bottom is slightly greater than the length of the flexible connection part 13, and the groove depth is slightly less than 1 / 2 of the width of the pin tail 11. When the guide mechanism 22 is closed, the two guide pages 221 are closed towards each other and fit the flexible connection part 13. In the embodiment of the present application, the groove depth of each guide page 221 is designed to be slightly less than 1 / 2 of the width of the pin tail 11, which can well avoid mutual interference when the two guide pages 221 are closed towards each other; the groove bottom width of each guide page 221 is designed to be equivalent to the thickness of the pin tail 11, and the length of the groove bottom is slightly greater than the length of the flexible connection part 13, which can well wrap the entire length of the flexible connection part 13 when the two guide pages 221 are closed towards each other, providing protection for the flexible connection part 13 against external stress.

[0030] According to some embodiments of the present application, the guide mechanism 22 is disposed in the insertion hole 2 by means of a rotating shaft. Figure 3 A hole groove 21 is respectively arranged on the two opposite inner wall sides of the socket 2 at the same height as the pin head 12, and a rotating shaft 23 is respectively arranged on the bottom outer side surface of each guide leaf 121. The rotating shaft 23 is inserted into the hole groove 21 to fix the guide leaf 221 on the inner wall of the socket 2 so that it can be opened and closed.

[0031] It should be noted that the opening size of the guide mechanism 22 in the socket 2 is designed based on the boundary size of the pin head 12 after the offset. During the design, the maximum assembly tolerance between PCBAs is first determined, and then the maximum boundary size of the pin head 12 after the offset is calculated, and then the opening size of the guide mechanism 22 is designed to meet the maximum boundary size of the pin head 12 after the offset, so that the assembly can be successfully completed even when the assembly tolerance between PCBAs exceeds the fitting clearance of the connector itself.

[0032] According to some embodiments of the present application, the guide mechanism 22 of the embodiment of the present application is made of a hard conductive material, for example, the same hard conductive material as the pin tail 11 and / or the pin head 12. In this way, during the insertion process, the guide mechanism 22 can provide protection for the flexible connection part 13 against external stress, prevent the flexible connection part 13 from deformation or bending, thereby guiding the pin head 12 to be smoothly and completely inserted into the jack without affecting the conductive connection between the various parts of the pin 1.

[0033] According to some embodiments of the present application, the pin tail 11 and the pin head 12 are made of the same hard conductive material, for example, both are made of plated copper T2 material, which is harder than ordinary metal wires and can resist external stress well during the insertion process with the socket 2.

[0034] In summary, the connector for PCBA connection proposed in the present application includes several pairs of pins and sockets. On the one hand, compared with the pins of the existing structure, the pins of the present application are composed of three components: a pin tail, a pin head and a flexible connecting part, wherein the flexible connecting part is connected between the pin tail and the pin head, and has the ability to change direction under a small force state, so that the pin head can swing freely; on the other hand, compared with the socket of the existing structure, a guide mechanism is provided in the socket of the present application, and before the pin head is not centered on the socket, the guide mechanism is in an open state, and when the pin head is centered on the socket and starts to move downward When the assembly tolerance between the PCBAs exceeds the fitting clearance of the connector itself, the pin head can be oriented smoothly to the center of the socket by the free swinging of the pin head and the cooperation of the guide mechanism. During the insertion process, the guide mechanism provides protection for the flexible connection part against external stress, avoids deformation or bending of the flexible connection part, and guides the pin head to be smoothly and completely inserted into the socket, effectively solving the problem of being unable to assemble and avoiding the situation where the automated production line cannot be assembled, while also avoiding the excessive cost of manufacturing high-precision tooling.

[0035] Example 2

[0036] Embodiment 2 of the present application provides an inverter, including a plurality of PCBAs, and the connection between these PCBAs uses the connector of the aforementioned embodiment 1.

[0037] Since the connector of Example 1 of the present application can still be assembled when the assembly tolerance between PCBAs exceeds the fitting clearance of the connector itself, the inverter of Example 2 of the present application can effectively reduce assembly risks, high-precision tooling costs, and design difficulty by using the connector of the aforementioned Example 1 when connecting the internal PCBA.

[0038] Finally, it should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion. Without further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of additional identical elements in the process, method, product or equipment that includes the elements.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A connector for PCBA connection, comprising a plurality of pairs of pins and sockets, wherein the pins and sockets are plugged into each other to achieve electrical connection, characterized in that: The plug pin comprises a plug pin tail, a plug pin head and a flexible connection portion, wherein the flexible connection portion is connected between the plug pin tail and the plug pin head and has the ability to change direction freely; A guide mechanism is provided in the socket. Before the pin head is not centered in the socket, the guide mechanism is in an open state. When the pin head is centered in the socket and starts to move downward, the guide mechanism is gradually closed until it fits with the flexible connecting portion.

2. The connector according to claim 1, characterized in that: The flexible connection part is made of pure metal with low hardness, and its shape includes but is not limited to sheet and wire.

3. The connector according to claim 1, characterized in that: The top of the pin head has a pointed structure.

4. The connector according to claim 3, characterized in that: The height of the pointed structure is 1 / 2 of the height of the pin head.

5. The connector according to claim 1, characterized in that: The guide mechanism includes two symmetrical guide pages, each of which is in the shape of a groove with openings at both ends, wherein the width of the groove bottom is equivalent to the thickness of the tail of the pin, the length of the groove bottom is slightly larger than the length of the flexible connection part, and the groove depth is slightly smaller than 1 / 2 width of the tail of the pin. When the guide mechanism is closed, the two guide pages close together and fit the flexible connection part.

6. The connector according to claim 5, characterized in that: A hole groove is respectively arranged on the two opposite inner wall sides of the jack at a position at the same height as the pin head, and a rotating shaft is respectively arranged on the bottom outer side surface of each guide leaf. The rotating shaft is inserted into the hole groove to fix the guide leaf on the inner wall of the jack in an openable and closable manner.

7. The connector according to claim 6, characterized in that: The opening size of the guide mechanism in the insertion hole is designed according to the boundary size of the pin head after deflection.

8. The connector according to claim 1, characterized in that: The guide mechanism is made of hard conductive material.

9. The connector according to claim 1, characterized in that: The pin tail and the pin head are made of the same hard conductive material.

10. An inverter, comprising a plurality of PCBAs, characterized in that: The connection between the PCBAs uses the connector described in any one of claims 1-9.

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