Connector terminal and terminal assembly

Abstract

The utility model discloses a connector terminal and a terminal assembly, the connector terminal comprises a main body part and a crimping part, the main body part comprises a substrate, a first side plate and a second side plate; the substrate is provided with a base surface and a first contact part protruding from the base surface; the first side plate extends from one side of the substrate towards the direction far away from the base surface, the first side plate is bent towards the second side plate to form a first elastic sheet, and the first elastic sheet is provided with a second contact part; the second side plate extends from the other side of the base plate towards the direction far away from the base surface, and the second side plate is bent towards the first side plate to form a second elastic sheet; in the thickness direction of the main body part, the first elastic piece is arranged below the second elastic piece, and an elastic piece gap is formed between the first elastic piece and the second elastic piece. The first contact part of the connector terminal and the second contact parts on the two sides form a stable contact structure on the section, so that the connection stability between the terminals can be improved, and the transmission efficiency can be improved; the connector terminal is provided with an elastic sheet gap, so that the male end pin can be smoothly inserted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of connector, specifically relates to a connector terminal and terminal subassembly. BACKGROUND

[0002] In the field of electronic equipment and new energy vehicles, connectors are plugged together by connector terminals to transmit current and / or signals.

[0003] Connector terminals with accommodating cavities or accommodating grooves are installed in the rubber shells of connectors, one end of which is used to connect with the terminals of pin structures, and the other end is used to connect with cables and flat cables (including FFC and FPC). Some connector products need to be assembled into small spaces, which makes the contact area between the terminals limited. Due to the small size, the terminal connection structure has some defects, such as unstable connection, deformation of the pin when the terminal is plugged due to the influence of resistance, and loosening in later use due to slight vibration, i.e. insufficient contact area holding force, which ultimately leads to unstable contact of the terminal assembly plugged and connected, and poor transmission performance of the connector.

[0004] In the prior art, some connector terminals increase stop pieces to prevent loosening, but this increases the insertion resistance and may be deformed or broken when a large external force is applied, and the stop pieces make the forming process of the connector terminal more complex. Therefore, the terminal structure of the connector needs to be improved. SUMMARY

[0005] To solve the problems of the prior art, the utility model provides a connector terminal, which solves the problems of large plugging resistance and weak anti-vibration capability of the prior art.

[0006] The technical effects achieved by the utility model are realized by the following technical aspects:

[0007] In a first aspect, the utility model provides a connector terminal, which includes a main body part and a crimping part fixedly connected with the main body part, the main body part includes a base plate, a first side plate and a second side plate;

[0008] The base plate is provided with a base surface and a first contact part protruding from the base surface;

[0009] The first side plate extends from one side of the base plate away from the base surface, the first side plate is bent towards the second side plate to form a first elastic sheet, and the first elastic sheet is provided with a second contact part;

[0010] The second side plate extends from the other side of the base plate away from the base surface, and the second side plate is bent towards the first side plate to form a second elastic sheet;

[0011] Wherein, in the thickness direction of the main body, the first spring sheet is arranged below the second spring sheet, and a spring sheet gap is arranged between the first spring sheet and the second spring sheet.

[0012] In some embodiments, the main body has two sides opposite in the lateral direction thereof, and a front end and a rear end opposite in the longitudinal direction thereof.

[0013] The first contact portion is arranged on the base surface in a protruding manner along the direction of the lateral direction, and the first contact portion is close to the front end.

[0014] In some embodiments, the first spring sheet comprises a first horizontal section, a first bent section and a second bent section.

[0015] In the longitudinal direction, the first bent section is formed by extending from one end of the first horizontal section in a direction close to the base surface, and the second bent section is formed by extending from one end of the first bent section in a direction away from the base surface.

[0016] In some embodiments, the second contact portion is arranged at the joint of the second bent section and the first bent section, and the second contact portion is thickened and protrudes towards the base surface.

[0017] In some embodiments, the projection of the second contact portion on the base surface is located between the two first contact portions.

[0018] In some embodiments, the second spring sheet comprises a second horizontal section and a third bent section, the third bent section is formed by extending from one end of the second horizontal section in a direction close to the base surface, and the spring sheet gap is arranged between the first bent section and the third bent section.

[0019] In some embodiments, the second spring sheet further comprises a third contact portion, the third contact portion is arranged at the third bent section, and the third contact portion protrudes towards the first bent section.

[0020] In a second aspect, the utility model provides a terminal assembly, comprising a male pin and the connector terminal, the main body is equipped with an opening and a containing groove, the male pin is inserted into the containing groove through the opening, and the first contact portion and the second contact portion are electrically connected with the male pin respectively.

[0021] In some embodiments, the main body further comprises a limiting block, and the limiting block is formed by bending the second side plate at the opening; the second side plate is provided with a through hole, and the through hole is close to the opening.

[0022] In some embodiments, the crimping part is provided with a convex tooth, the convex tooth surrounds a crimping groove, the cable is placed in the crimping groove, and is fixed by being bent and pressed by the convex tooth.

[0023] In summary, the utility model has at least the following advantages:

[0024] 1、 the connector terminal provided by the utility model is respectively provided with a first contact part on the base surface of the substrate, and a second contact part on the first elastic sheet, the first contact part and the second contact part on both sides form a stable contact structure in the cross section, the connection stability between terminals is improved, transmission efficiency is improved, and the male pin can be smoothly inserted by setting an elastic sheet gap between the first elastic sheet and the second elastic sheet, and the insertion resistance is small.

[0025] 2、 the terminal assembly provided by the utility model, when the male pin is inserted into the accommodating groove of the connector terminal through the opening, first receives the direct extrusion force of the first elastic sheet, and then receives the indirect extrusion force of the second elastic sheet, after being smoothly inserted into the connector terminal, the first elastic sheet and the second elastic sheet effectively maintain the position of the male pin, and prevent displacement caused by vibration. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic view of the connector terminal of the utility model embodiment 1.

[0027] Figure 2 It is Figure 1 It is a sectional view along A-A line.

[0028] Figure 3 It is Figure 2 It is an enlarged schematic view of B part.

[0029] Figure 4 It is a sectional view of the connector terminal of the utility model embodiment 1 and the male pin is connected.

[0030] Figure 5 It is a schematic view of the connector terminal of the utility model embodiment 1 in the longitudinal direction.

[0031] Figure 6 It is an exploded view of the terminal assembly of the utility model embodiment 2.

[0032] Figure 7 It is the installation schematic view of the terminal assembly of the utility model embodiment 3.

[0033] Markings in the drawing:

[0034] 100 - wire-to-board connector;

[0035] 1 - main body part;

[0036] 11-base plate, 12-first side plate, 13-second side plate, 14-first elastic sheet, 15-second elastic sheet, 16-elastic sheet gap, 17-limiting block;

[0037] 101-front end, 102-rear end, 103-limiting port, 104-receiving groove, 105-opening;

[0038] 111-base surface, 112-first contact portion, 113-bottom surface;

[0039] 140-second contact portion, 141-first horizontal section, 142-first bending section, 143-second bending section;

[0040] 151-second horizontal section, 152-third bending section, 153-third contact portion;

[0041] 2-crimping portion;

[0042] 21-protruding tooth, 22-crimping groove;

[0043] 200-male pin;

[0044] X-lateral direction, Y-longitudinal direction, Z-thickness direction. DETAILED DESCRIPTION

[0045] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings and specific embodiments. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0046] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element.

[0047] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0049] Example 1:

[0050] like Figures 1-6 As shown, this embodiment provides a connector terminal 100, which is installed in the housing of a connector for electrical connection with other terminals, thereby enabling current and signal transmission. The connector terminal 100 provided in this embodiment is a female terminal with a receiving groove; it is understood that this connector terminal 100 is electrically connected to a male pin.

[0051] The connector terminal 100 includes a main body 1 and a crimping part 2, with the crimping part 2 fixedly connected to the main body 1. The main body 1 and the crimping part 2 can be either separate or integrated. In a separate structure, the main body 1 and the crimping part 2 are connected together via a detachable plug-in or snap-fit ​​mechanism; in an integrated structure, the main body 1 and the crimping part 2 are integrally formed. In the connector terminal 100 of this embodiment, the main body 1 and the crimping part 2 are integrally stamped / bent.

[0052] The main body 1 includes a substrate 11, a first side plate 12, and a second side plate 13, which are respectively disposed on both sides of the substrate 11. The substrate 11 is a planar metal plate structure with a base surface 111 and a first contact portion 112, which protrudes from the base surface 111. The first side plate 12 extends from one side of the substrate 11 in a direction away from the base surface 111, and then bends towards the second side plate 13 to form a first spring piece 14, which has a second contact portion 140. The second side plate 13 extends from the other side of the substrate 11 in a direction away from the base surface 111, and then bends towards the first side plate 12 to form a second spring piece 15.

[0053] In the thickness direction Z of the main body 1, the first spring piece 14 is disposed below the second spring piece 15, and a spring piece gap 16 is provided between the first spring piece 14 and the second spring piece 15.

[0054] The connector terminal 100 is inserted into the male terminal through the main body 1 and is crimped with a cable or a flat cable (FFC or FPC) through the crimping part 2. When the male terminal is inserted into the main body, the male terminal is in contact with the first contact part 112 and the second contact part 140 of the substrate 11 respectively, so that the current transmission and the signal transmission are realized. In addition, because the spring gap 16 is arranged between the first spring 14 and the second spring 15, the male terminal passes through the limiting opening formed by the first spring 14 and the substrate 11 during the insertion process. At this time, the second spring 15 does not contact the first spring 14, so that the insertion process is relatively smooth. The male terminal continues to move forward, and at this time, the first spring 14 is pressed by the second spring 15, and the two springs jointly press the male terminal, so that the male terminal is limited and prevented from being displaced due to vibration.

[0055] As shown in Figure 1 , the main body 1 has two opposite sides (left side and right side) in the transverse direction X and a front end 101 and a rear end 102 in the longitudinal direction. The first contact part 112 is arranged on the base surface 111 in the direction of the transverse direction X and is close to the front end 101. In this embodiment, the first contact part 112 has a widening structure in the transverse direction X, that is, the contact area is increased in the transverse direction X, so that the unstable contact problem caused by the sliding of the male terminal in the transverse direction X can be solved.

[0056] In combination with reference to Figure 2 and Figure 3 , the first spring 14 includes a first horizontal section 141, a first bending section 142 and a second bending section 143. In the longitudinal direction Y, specifically in the direction from the rear end 102 to the front end 101, the first bending section 142 is formed by extending the one end of the first horizontal section 141 downward in the direction close to the base surface 111, and the second bending section 143 is formed by extending the one end of the first bending section 142 upward in the direction away from the base surface 111. The second contact part 140 is arranged at the joint of the second bending section 143 and the first bending section 142, and the second contact part 140 has a thickening shape and protrudes toward the base surface 111. The limiting opening 103 is formed between the second contact part 140 and the substrate 11, and the male terminal passes through the limiting opening 103 to be completely inserted into the accommodating groove 104 of the main body 1.

[0057] In combination with reference to Figure 2 and Figure 4The first contact portion 112 of the embodiment is provided as two, and the projection of the second contact portion 140 on the base surface 111 is located between the two first contact portions 112 in the longitudinal direction Y. The first contact portion 112 is formed by stamping from the bottom surface 113 of the substrate 11 toward the base surface 111, and the first contact portion 112 protrudes toward the accommodation groove 104, while the two first contact portions 112 are also located on both sides of the limiting opening 103. In the cross-sectional view, the second contact portion 140 and the two first contact portions 112 below form a stable triangular structure, and after the male pin is completely inserted into the accommodation groove 104, the first contact portion 112 and the second contact portion 140 are connected with the male pin respectively, thereby increasing the stability of the contact.

[0058] The second elastic sheet 15 includes a second horizontal section 151 and a third bent section 152, which is formed by extending obliquely downward from one end of the second horizontal section 151 toward the base surface 111. The elastic sheet gap 16 is provided between the first bent section 142 and the third bent section 152, and in the embodiment, the width of the elastic sheet gap 16 is m, which is in the range of 0.05mm-0.15mm, and preferably m=0.1mm. By providing the elastic sheet gap 16, the insertion resistance of the male pin when passing through the limiting opening 103 is small, and the male pin can be smoothly inserted into the accommodation groove 104. After complete insertion, the first bent section 142 abuts against the third bent section 152, i.e., the second elastic sheet 15 presses the first elastic sheet 14 downward, and the two together exert pressure on the male pin 200 to keep the position of the male pin 200 and prevent displacement due to vibration.

[0059] Further, the second elastic sheet 15 is provided with a third contact portion 153, which is provided on the third bent section 152. The third contact portion 153 protrudes toward the first bent section 142, and the end of the third contact portion 153 is located in the elastic sheet gap 16. When the male pin 200 is not inserted into the accommodation groove 104, the third contact portion 153 does not contact the first bent section 142; after the male pin 200 passes through the limiting opening 103 and enters the accommodation groove 104, the first bent section 142 is lifted upward, and the upper surface of the first bent section 142 abuts against the third contact portion 153. At this time, the first elastic sheet 14 and the second elastic sheet 15 together effectively keep the position of the male pin 200, preventing displacement due to vibration.

[0060] The connector terminal provided by the embodiment is provided with a first contact part on the base surface of the substrate and a second contact part on the first elastic sheet, the first contact part and the two second contact parts form a stable triangular contact structure in the cross section, the connection stability between the terminals is improved, and the transmission efficiency is improved; the elastic sheet gap is arranged between the first elastic sheet and the second elastic sheet, the male pin can be smoothly inserted, the insertion resistance is small, and the connector terminal can obtain the technical effects of low insertion force and vibration resistance without arranging the blocking sheet.

[0061] Embodiment 2

[0062] Figure 6 The exploded view of the terminal assembly of the embodiment is based on the Figures 1-5 , and Figure 6 , the terminal assembly provided by the embodiment includes the male pin 200 and the connector terminal 100 of the embodiment 1, wherein the main body part 1 of the connector terminal 100 is provided with the opening 105 and the accommodating groove 104, the male pin 200 is inserted into the accommodating groove 104 through the opening 105, and the first contact part 112 and the second contact part 140 are electrically connected with the male pin, respectively.

[0063] It should be noted that the main body part 1 is provided with the limiting block 17. The limiting block 17 is formed by bending the second side plate 13 downward at the opening 105. After the male pin 200 is inserted into the accommodating groove 104, the limiting block 17 also limits the male pin 200 in the thickness direction Z.

[0064] In addition, the second side plate 13 is also provided with the through hole 131. After the main body part 1 is punched, the detection and electroplating treatment are required. In the embodiment, the second contact part 140 can be viewed through the through hole 131. Based on the structure, the through hole 131 of the connector terminal 100 can be transparent after the punching process, so that the height of the first elastic sheet is checked by the CCD from the second side plate 13; in addition, after the main body part 1 is punched, the electroplating liquid can smoothly enter the inside from the through hole 131 to electroplate the connector terminal 100 comprehensively, so as to form a stable protective film layer, improve the terminal contact retention and service life.

[0065] In the connector terminal 100, the crimping part 2 is provided with the protruding teeth 21, the protruding teeth 21 extend outward in the longitudinal direction, and a plurality of protruding teeth 21 surround the crimping groove 22, which is used for installing the cable (not marked in the figure). After the cable is placed in the crimping groove 22, the protruding teeth 21 are bent and fixed tightly around the cable.

[0066] In the terminal assembly, the connector terminal is abutted with the male pin through the limiting block and the plurality of contact parts, the position of the male pin can be fixed, and the connection stability between the terminals is improved.

[0067] Embodiment 3:

[0068] Figure 7 The mounting schematic diagram of the terminal assembly of the present embodiment is given, on the basis of Figures 1-6 reference is made to Figure 7 In 7A, the male pin 200 is inserted into the accommodating groove 104 of the main body 1 through the opening 105, at this time, the front end of the male pin 200 reaches the limiting opening 103, and the front end abuts against the second bending section; at this time, the spring gap 16 between the first bending section 142 and the third bending section 152 is not compressed, and the third contact part 153 is not in contact with the first bending section 142.

[0069] In 7B, when the male pin 200 is further inserted into the accommodating groove 104 through the limiting opening 103, the first bending section 142 is lifted upward, and the upper surface of the first bending section 142 abuts against the third contact part 153. At this time, the first spring 14 and the second spring 15 jointly effectively hold the position of the male pin 200, that is, the first spring 14 directly extrudes the male pin, and the second spring indirectly extrudes the male pin, which jointly prevents the male pin 200 from being displaced due to vibration.

[0070] The above is only an example and description of the structure of the present utility model, which is more specific and detailed, but it should not be understood as a limitation on the scope of the present utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present utility model, a number of modifications and improvements can be made, and these obvious alternative forms all belong to the protection scope of the present utility model.

Claims

1. A connector terminal characterized by, The connector terminal comprises a main body and a crimping part fixedly connected with the main body, the main body comprises a base plate, a first side plate and a second side plate; The base plate is provided with a base surface and a first contact part protruding from the base surface; The first side plate extends from one side of the base plate away from the base surface, and the first side plate is bent towards the second side plate to form a first spring sheet, and the first spring sheet is provided with a second contact part; The second side plate extends from the other side of the base plate away from the base surface, and the second side plate is bent towards the first side plate to form a second spring sheet; In the thickness direction of the main body, the first spring sheet is arranged below the second spring sheet, and a spring sheet gap is arranged between the first spring sheet and the second spring sheet.

2. The connector terminal according to claim 1, characterized by The main body has two opposite sides in the transverse direction and a front end and a rear end in the longitudinal direction; The first contact part is protrudingly arranged on the base surface in the transverse direction, and the first contact part is close to the front end.

3. The connector terminal according to claim 2, characterized by The first spring sheet comprises a first horizontal section, a first bending section and a second bending section; In the longitudinal direction, the first bending section extends from one end of the first horizontal section in the direction close to the base surface, and the second bending section extends from one end of the first bending section in the direction away from the base surface.

4. The connector terminal according to claim 3, characterized by The second contact part is arranged at the joint of the second bending section and the first bending section, and the second contact part is thickened and protrudes towards the base surface.

5. The connector terminal according to claim 4, characterized by The projection of the second contact part on the base surface is located between the two first contact parts.

6. The connector terminal according to claim 3, characterized by The second spring sheet comprises a second horizontal section and a third bending section, the third bending section extends from one end of the second horizontal section in the direction close to the base surface, and the spring sheet gap is arranged between the first bending section and the third bending section.

7. The connector terminal according to claim 6, characterized by The second spring sheet further comprises a third contact part, the third contact part is arranged on the third bending section, and the third contact part protrudes towards the first bending section.

8. A terminal assembly characterized by, The connector terminal comprises a male pin and the connector terminal of any one of claims 1-7, the main body is provided with an opening and a receiving groove, the male pin is inserted into the receiving groove through the opening, and the first contact part and the second contact part are electrically connected with the male pin respectively.

9. The terminal assembly of claim 8, the main body is further provided with a limiting block, and the limiting block is bent from the second side plate at the opening; the second side plate is provided with a through hole close to the opening.

10. The terminal assembly of claim 8, the crimping part is provided with a protruding tooth, the protruding tooth surrounds a crimping groove, a cable is placed in the crimping groove and is fixed by being bent by the protruding tooth.

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