Crimping type terminal, crimping type terminal assembly and electric connector

Abstract

The utility model discloses a crimping type terminal, a crimping type terminal assembly and an electric connector. The crimping type terminal comprises an access section, a crimping section and a crimping section, the displacement section is positioned above the access section and is connected with the access section; the width of the displacement section in the left-right direction is gradually increased and then gradually decreased from top to bottom; the width of the displacement section in the front-back direction is gradually increased and then gradually decreased from top to bottom; the displacement section comprises a first elastic arm, a second elastic arm and a third elastic arm; the upper ends of the first elastic arm, the second elastic arm and the third elastic arm are integrally connected to form an upper connecting section, and the lower ends are integrally connected to form a lower connecting section; the parts, located between the upper connecting section and the lower connecting section, of the first elastic arm, the second elastic arm and the third elastic arm are defined to form a first elastic section, a second elastic section and a third elastic section respectively. The first elastic section, the second elastic section and the third elastic section can elastically deform in the left-right direction and the front-back direction respectively.

Description

Technical Field

[0001] The present application relates to a crimping terminal, a crimping terminal assembly and an electrical connector. Background Art

[0002] Crimp terminals are crucial interface components in electrical and electronic systems, from systems, cabinets, printed circuit boards, to individual replaceable individual unit sockets. They not only play an irreplaceable role but are also directly linked to the safe and reliable operation of the entire system. With the continuous advancement of electrical automation, the number and variety of electronic components included in systems have increased significantly. The performance and operating status of any one component directly impacts the operation of the entire system.

[0003] To achieve a smooth mating connection, crimp terminals must be inserted to a certain depth and maintain stable contact. However, excessive insertion force to achieve this depth can damage the electrical contacts. Therefore, low insertion force and high retention force are ideal for mating. However, in the field, friction, wear, and stress relaxation often occur due to repeated plugging and unplugging, improper force, and tilted plugging and unplugging. These factors can affect the plugging and unplugging characteristics of electronic components and, in severe cases, can cause contact failure in the mating parts of electronic components.

[0004] In summary, it is necessary to design a new crimping terminal that can achieve stable plugging and contact with the docking module. Utility Model Content

[0005] The purpose of the present application is to provide a crimping terminal, a crimping terminal assembly and an electrical connector, wherein the crimping terminal can achieve stable plugging and unplugging and contact with a docking module.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A crimp terminal having a vertical direction for being pressed into or pulled out of a docking module and a left-right direction and a front-back direction perpendicular to the vertical direction, wherein the left-right direction and the front-back direction are perpendicular to each other, comprising:

[0008] Access segment;

[0009] a displacement section, located above the access section and directly connected to the access section;

[0010] The width of the displacement section in the left-right direction gradually increases from top to bottom and then gradually decreases;

[0011] The width of the displacement section in the front-to-back direction gradually increases from top to bottom and then gradually decreases;

[0012] The maximum width of the displacement section in the left-right direction is greater than that of the access section, and the maximum width of the displacement section in the front-back direction is greater than that of the access section;

[0013] The displacement section includes a first elastic arm, a second elastic arm and a third elastic arm;

[0014] The upper ends of the first elastic arm, the second elastic arm and the third elastic arm are integrally connected to form an upper connecting section, and the lower ends are integrally connected to form a lower connecting section;

[0015] The first elastic arm, the second elastic arm and the third elastic arm are located between the upper connecting section and the lower connecting section to form a first elastic section, a second elastic section and a third elastic section respectively;

[0016] The first elastic section, the second elastic section and the third elastic section are separated from each other along the left-right direction and the front-back direction;

[0017] The first elastic section, the second elastic section and the third elastic section can be elastically deformed along the left-right direction and the front-back direction respectively.

[0018] Furthermore, along the left-right direction, the second elastic section is located between the first elastic section and the third elastic section;

[0019] In the front-to-back direction, the second elastic section is misaligned with the first elastic section, the second elastic section is misaligned with the third elastic section, or

[0020] The second elastic section is bent and arched from the middle of the up-down direction toward the front end to form one of an arc, an isosceles trapezoid or a right-angled trapezoid; the first elastic section is bent and arched from the middle of the up-down direction toward the rear end to form one of an arc, an isosceles trapezoid or a right-angled trapezoid; the third elastic section is bent and arched from the middle of the up-down direction toward the rear end to form one of an arc, an isosceles trapezoid or a right-angled trapezoid.

[0021] Furthermore, the projections of the first elastic section and the third elastic section along the left-right direction overlap.

[0022] Furthermore, the two outer side surfaces of the second elastic section along the left and right directions are planes;

[0023] The inner side surfaces of the first elastic section and the third elastic section that are opposite to each other in the left-right direction are planes.

[0024] Furthermore, two outer side surfaces of the second elastic segment along the front-to-back direction are arc surfaces with the same bending direction.

[0025] Furthermore, outer side surfaces of the first elastic segment and the third elastic segment along the left and right directions are arc surfaces with opposite bending directions.

[0026] Furthermore, the two outer side surfaces of the first elastic segment along the front-to-back direction are arc surfaces with the same bending direction, and / or the two outer side surfaces of the third elastic segment along the front-to-back direction are arc surfaces with the same bending direction.

[0027] Furthermore, the second elastic section, the first elastic section and the third elastic section are formed by punching and tearing the same metal plate in the front-to-back direction;

[0028] The material thickness of the first elastic section, the second elastic section and the third elastic section along the front-to-back direction is the same as that of the access section.

[0029] To achieve the above objectives, this application also provides the following technical solutions:

[0030] A crimp terminal assembly, comprising the crimp terminal as described in any one of the above items, further comprising:

[0031] A docking module, wherein a plug-in slot / plug-in hole is recessed downwardly on the surface of the docking module, the access section and the displacement section are inserted into the plug-in slot / plug-in hole from top to bottom, and the inner peripheral wall of the plug-in slot / plug-in hole and the displacement section form at least three elastic contact positions along the radial direction of the plug-in slot / plug-in hole;

[0032] When the crimp terminal is inserted into the insertion slot / insertion hole of the docking module, the second elastic section, the first elastic section and the third elastic section are elastically deformed and moved closer to the central axis of the access section after being subjected to force at the three elastic contact positions.

[0033] To achieve the above objectives, this application also provides the following technical solutions:

[0034] An electrical connector comprises a crimp terminal as described above and an insulating body fixed to the crimp terminal, wherein the electrical connector is used for electrically plugging with a docking connector.

[0035] Compared with the prior art, the beneficial effect of the present application is that the crimped terminal of the present application can achieve stable plugging and contact with the docking module. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional schematic diagram of the crimp terminal assembly of the present application, specifically showing the three-dimensional state diagram of the crimp terminal after being inserted into a docking module.

[0037] Figure 2 It is a three-dimensional schematic diagram of the crimp terminal of this application.

[0038] Figure 3 It is a front view of the crimp terminal of this application.

[0039] Figure 4 It is a rear view of the crimp terminal of this application.

[0040] Figure 5 It is a left side view of the crimp terminal of this application.

[0041] Figure 6 It is from Figure 4 Sectional view along line AA.

[0042] Figure 7 It is from Figure 4 The cross-sectional view along line BB is shown in the figure, where the dotted box indicates the location of the access section.

[0043] Figure 8 It is from Figure 4 Cross-sectional view along line CC, where the dotted box indicates the location of the access section.

[0044] Figure 9 It is from Figure 4 The cross-sectional view along the DD line is shown in the figure, where the dotted box indicates the location of the access section. DETAILED DESCRIPTION

[0045] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] In order to accurately describe the entire application, all directions involved should be referred to as Figure 2 For reference, the X-axis is defined as the left-right direction, with the positive direction of X being right. The Y-axis is defined as the up-down direction (i.e., the direction in which the crimped terminal is inserted / removed from the docking module 100), with the positive direction of the Y-axis being up. The Z-axis is defined as the front-back direction, with the positive direction of the Z-axis being forward.

[0047] Please refer to Figures 1 to 9 As shown, a crimp terminal disclosed in the present application can be formed by stamping a metal plate. Specifically, the crimp terminal includes an access section 1, a displacement section 2, a neck section 6 and a terminal main section 7 from bottom to top. In the drawings of the present application, only a portion of the terminal main section 7 is schematically shown. Specifically, the access section 1 is directly and integrally connected to the displacement section 2, the displacement section 2 is directly and integrally connected to the neck section 6, and the neck section 6 is directly and integrally connected to the terminal main section 7.

[0048] In one embodiment of the present application, the deflection section 2 includes a first elastic arm 3, a second elastic arm 4, and a third elastic arm 5. The upper ends of the first elastic arm 3, the second elastic arm 4, and the third elastic arm 5 are integrally connected to form an upper connecting section 21, and the lower ends are integrally connected to form a lower connecting section 22. The upper connecting section 21 is integrally connected to the neck section 6, and the lower connecting section 22 is integrally connected to the access section 1.

[0049] Furthermore, the width of the displacement segment 2 in the left-right direction gradually increases from top to bottom and then gradually decreases. The width of the displacement segment 2 in the front-to-back direction gradually increases from top to bottom and then gradually decreases. The maximum width of the displacement segment 2 in the left-right direction is greater than that of the access segment 1, and the maximum width of the displacement segment 2 in the front-to-back direction is greater than that of the access segment 1.

[0050] The first elastic arm 3, the second elastic arm 4, and the third elastic arm 5, respectively, located between the upper connecting section 21 and the lower connecting section 22, define a first elastic section 30, a second elastic section 40, and a third elastic section 50. The first elastic section 30, the second elastic section 40, and the third elastic section 50 are separated from each other in the left-right and front-to-back directions. Each of the first elastic section 30, the second elastic section 40, and the third elastic section 50 is capable of elastic deformation in at least the left-right and front-to-back directions. The material thickness of the first elastic section 30, the second elastic section 40, and the third elastic section 50 in the front-to-back direction is the same as that of the access section 1.

[0051] In a preferred embodiment, the first elastic arm 3, the second elastic arm 4 and the third elastic arm 5 are formed by stamping from the same metal plate. Figure 2 As shown, specifically, the displacement segment 2 is torn forward and punched along the middle position in the left-right direction to form the second elastic arm 4, and the second elastic segment 40 is bent and arched toward the front end along the middle position in the up-down direction to form one of an arc, an isosceles trapezoid or a right-angled trapezoid. The displacement segment 2 is punched backward along the two sides of the left-right direction to form the first elastic segment 30 and the third elastic segment 50. The first elastic segment 30 is bent and arched toward the rear end along the middle position in the up-down direction to form one of an arc, an isosceles trapezoid or a right-angled trapezoid. The third elastic segment 50 is bent and arched toward the rear end along the middle position in the up-down direction to form one of an arc, an isosceles trapezoid or a right-angled trapezoid. Preferably, the projections of the first elastic segment 30 and the third elastic segment 50 along the left-right direction overlap.

[0052] In some embodiments, the second elastic section 40 is offset from the first elastic section 30 in the front-to-back direction. In the front-to-back direction, the second elastic section 40 is offset from the third elastic section 50. Alternatively, the projections of the second elastic section 40 and the first elastic section 30 do not overlap in the left-to-right direction, and the projections of the second elastic section 40 and the third elastic section 50 do not overlap in the left-to-right direction. This ensures that the first elastic section 30, the second elastic section 40, and the third elastic section 50 are each capable of elastic deformation in both the left-to-right and the front-to-back directions.

[0053] In a preferred embodiment, the second elastic section 40 is bent and arched into an arc shape from the middle to the front end in the up-down direction, the first elastic section 30 is bent and arched into an arc shape from the middle to the rear end in the up-down direction, and the third elastic section 50 is bent and arched into an arc shape from the middle to the rear end in the up-down direction.

[0054] Furthermore, the two outer side surfaces 41, 42 of the second elastic section 40 along the left-right direction are planes. The inner side surfaces 31, 51 of the first elastic section 30 and the third elastic section 50 that are opposite to each other along the left-right direction are planes. In a preferred embodiment, the two outer side surfaces 43, 44 of the second elastic section 40 along the front-to-back direction are arc surfaces with the same bending direction. In a preferred embodiment, the outer side surfaces 32, 52 of the first elastic section 30 and the third elastic section 50 along the left-to-right direction are arc surfaces with opposite bending directions. In a preferred embodiment, the two outer side surfaces 33, 34 of the first elastic section 30 along the front-to-back direction are arc surfaces with the same bending direction. In a preferred embodiment, the two outer side surfaces 53, 54 of the third elastic section 50 along the front-to-back direction are arc surfaces with the same bending direction.

[0055] In other embodiments, the second elastic section 40 is bent and arched from the middle to the front end in the up-down direction to form a right-angled trapezoid, the first elastic section 30 is bent and arched from the middle to the rear end in the up-down direction to form a right-angled trapezoid, and the third elastic section 50 is bent and arched from the middle to the rear end in the up-down direction to form a right-angled trapezoid.

[0056] Furthermore, the short side (or top side) of the right-angled trapezoid formed by the second elastic segment 40 is located in front of the plane where the access segment 1 and the neck segment 6 are located, and is substantially parallel to the plane where the access segment 1 and the neck segment 6 are located; the inclined waist of the right-angled trapezoid formed by the second elastic segment 40 is located below the short side, and the inclined waist connects the short side to the lower connecting section 22; the right-angled waist of the right-angled trapezoid formed by the second elastic segment 40 is located above the short side, and the vertical waist connects the short side to the upper connecting section 21. Of course, the vertical and inclined connections referred to here are not ideal. Due to the processing requirements of the plate, each connection position (i.e., the short side and the right-angled waist, the right-angled waist and the upper connecting section 21, the short side and the inclined waist, and the inclined waist and the lower connecting section 22) will require a smaller processing bending arc angle transition.

[0057] In other embodiments, the second elastic section 40 is bent and arched from the middle to the front end in the up-down direction to form an isosceles trapezoid, the first elastic section 30 is bent and arched from the middle to the rear end in the up-down direction to form an isosceles trapezoid, and the third elastic section 50 is bent and arched from the middle to the rear end in the up-down direction to form an isosceles trapezoid.

[0058] Furthermore, the short side of the isosceles trapezoid formed by the second elastic segment 40 is located behind the plane containing the access segment 1 and the neck segment 6 and is substantially parallel to the plane containing the access segment 1 and the neck segment 6. The second elastic segment 40 forms an inclined waist of the isosceles trapezoid located below the short side, and this inclined waist connects the short side to the lower connecting section 22. The second elastic segment 40 forms another waist of the isosceles trapezoid located above the short side, and this inclined waist connects the short side to the upper connecting section 21. Similarly, the inclined connection referred to here is not an ideal state. Due to the processing requirements of the plate, each connection position (i.e., the short side and the inclined waist, the inclined waist and the upper connecting section 21, and the inclined waist and the lower connecting section 22) will require a relatively small processing bending arc angle transition.

[0059] Please refer to Figure 1 As shown, the crimping terminal can be inserted and assembled into a docking module 2 and together form a crimping terminal assembly. Specifically, the upper surface of the docking module 2 is recessed downward to form a plug-in slot / plug-in hole 20, and the access section 1 and the displacement section 2 are inserted into the plug-in slot / plug-in hole 20 from top to bottom. The inner peripheral wall of the plug-in slot / plug-in hole 20 and the displacement section 2 form at least three elastic contact positions along the radial direction of the plug-in slot / plug-in hole 20. When the crimping terminal is inserted into the plug-in slot / plug-in hole 20 of the docking module 2, the second elastic section 40, the first elastic section 30 and the third elastic section 50 are elastically deformed and moved closer to the central axis of the access section 1 after being subjected to force at the three elastic contact positions. Such a design can make the crimping terminal inserted into the docking module 2 more stable in contact with the inner wall surface of the plug-in slot / plug-in hole 20 of the docking module 2, especially when the metal sheet material used to form the crimping terminal is relatively thin. In addition, the crimped terminal of the present application also has the advantages of easy production and stable structure.

[0060] In addition, the crimp-type terminal described in the present application can also be assembled into a certain electrical connector (as shown in the figure), which may include an insulating body (as shown in the figure), and the crimp-type terminal can be installed and fixed in the insulating body. The access section 1, the displacement section 2 and the neck section 6 protrude from the insulating body for plugging and fixing with the substrate inside the electronic device. A part of the terminal main section 7 is fixed in the insulating body, and other parts of the terminal main section 7 are used for electrical connection with the docking connector. Of course, the electrical connector may also include other components such as a metal shell. For example, the electrical connector may be a USB connector, a battery connector, a board-to-board connector, an electronic card connector, an SFP connector, and the like.

Claims

1. A crimp terminal having a vertical direction for pressing into / pulling out of a docking module and a left-right direction and a front-back direction perpendicular to the vertical direction, wherein the left-right direction and the front-back direction are perpendicular to each other, characterized in that ,include: Access segment; a displacement section, located above the access section and directly connected to the access section; The width of the displacement section in the left-right direction gradually increases from top to bottom and then gradually decreases; The width of the displacement section in the front-to-back direction gradually increases from top to bottom and then gradually decreases; The maximum width of the displacement section in the left-right direction is greater than that of the access section, and the maximum width of the displacement section in the front-back direction is greater than that of the access section; The displacement section includes a first elastic arm, a second elastic arm and a third elastic arm; The upper ends of the first elastic arm, the second elastic arm and the third elastic arm are integrally connected to form an upper connecting section, and the lower ends are integrally connected to form a lower connecting section; The first elastic arm, the second elastic arm and the third elastic arm are located between the upper connecting section and the lower connecting section to form a first elastic section, a second elastic section and a third elastic section respectively; The first elastic section, the second elastic section and the third elastic section are separated from each other along the left-right direction and the front-back direction; The first elastic section, the second elastic section and the third elastic section can be elastically deformed along the left-right direction and the front-back direction respectively.

2. The crimp terminal according to claim 1, wherein: Along the left-right direction, the second elastic section is located between the first elastic section and the third elastic section; In the front-to-back direction, the second elastic section is misaligned with the first elastic section, the second elastic section is misaligned with the third elastic section, or The second elastic section is bent and arched from the middle of the up-down direction toward the front end to form one of an arc, an isosceles trapezoid or a right-angled trapezoid; the first elastic section is bent and arched from the middle of the up-down direction toward the rear end to form one of an arc, an isosceles trapezoid or a right-angled trapezoid; the third elastic section is bent and arched from the middle of the up-down direction toward the rear end to form one of an arc, an isosceles trapezoid or a right-angled trapezoid.

3. The crimp terminal according to claim 2, wherein: The projections of the first elastic section and the third elastic section along the left-right direction overlap.

4. The crimp terminal according to claim 1, wherein: The two outer side surfaces of the second elastic section along the left and right directions are planes; The inner side surfaces of the first elastic section and the third elastic section that are opposite to each other in the left-right direction are planes.

5. The crimp terminal according to claim 1, wherein: The two outer side surfaces of the second elastic section along the front-to-back direction are arc surfaces with the same bending direction.

6. The crimp terminal according to claim 1, wherein: The outer side surfaces of the first elastic section and the third elastic section along the left and right directions are arc surfaces with opposite bending directions.

7. The crimp terminal according to claim 1, wherein: The two outer side surfaces of the first elastic section along the front-to-back direction are arc surfaces with the same bending direction, and / or The two outer side surfaces of the third elastic section along the front-to-back direction are arc surfaces with the same bending direction.

8. The crimp terminal according to claim 1, wherein: The second elastic section, the first elastic section and the third elastic section are formed by punching and tearing the same metal plate in the front-to-back direction; The material thickness of the first elastic section, the second elastic section and the third elastic section along the front-to-back direction is the same as that of the access section.

9. A crimp terminal assembly, comprising the crimp terminal according to any one of claims 1 to 8, characterized in that: Also includes: A docking module, wherein a plug-in slot / plug-in hole is recessed downwardly on the surface of the docking module, the access section and the displacement section are inserted into the plug-in slot / plug-in hole from top to bottom, and the inner peripheral wall of the plug-in slot / plug-in hole and the displacement section form at least three elastic contact positions along the radial direction of the plug-in slot / plug-in hole; When the crimp terminal is inserted into the insertion slot / insertion hole of the docking module, the second elastic section, the first elastic section and the third elastic section are elastically deformed and moved closer to the central axis of the access section after being subjected to force at the three elastic contact positions.

10. An electrical connector, characterized in that: The electrical connector comprises a crimping terminal as described in any one of claims 1 to 8 and an insulating body fixed to the crimping terminal, wherein the electrical connector is used for electrically plugging with a docking connector.

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