Crimping type terminal, crimping type terminal assembly and electric connector
By designing a crimp terminal displacement section with elastic deformation capability, friction and wear problems caused by improper plugging and unplugging in the prior art are solved, and stable plugging and unplugging and contact with the docking module are achieved.
Patent Information
- Application Number
- CN202411482121.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-02-07
AI Technical Summary
During the insertion and extraction process, existing crimp terminals are prone to friction, wear and stress relaxation due to improper force or tilted insertion and removal, which affects the plugging and removal characteristics, and even leads to contact failure.
A crimped terminal is designed, which includes an access section and a displacement section. The width of the displacement segment gradually increases from top to bottom in the left and right and front and back directions and then decreases, and includes first, second and third elastic arms that can be elastically deformed to stabilize contact upon insertion.
It realizes stable plug-in and unplugging and contact with the docking module, reduces friction and wear, and improves plug-in and unplugging characteristics and contact stability.
Smart Images
Figure CN119401149A_ABST
Abstract
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 important supporting interface components in electrical and electronic systems. From systems, cabinets, printed circuit boards to each replaceable independent unit socket, they not only play an irreplaceable role, but are also directly related to the safe and reliable operation of the entire system. With the continuous improvement of the degree of electrical automation, the number and types of electronic components included in the system have increased significantly, and the performance and working status of any electronic component directly affect the operating status of the entire system.
[0003] In order to achieve smooth inter-mate connection, the crimp terminal is inserted to a certain depth at the mating end and maintains stable contact. However, excessive insertion force in order to insert to a certain depth will cause damage to the electrical contactor. Therefore, small insertion force and large retention force are the ideal state for inter-mate. However, at the working site, friction, wear and stress relaxation often occur due to multiple plugging and unplugging by users, irregular action force, tilted plugging and unplugging, etc., which will affect the plug-in and unplugging characteristics of electronic components, and in severe cases, may induce contact failure of the mating part of electronic components.
[0004] In summary, it is necessary to design a new crimping terminal that can achieve stable plugging and unplugging and contact with a docking module. Summary of the invention
[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: A crimping terminal is defined with an up-down direction for pressing into / pulling out of a docking module and a left-right direction and a front-back direction perpendicular to the up-down direction, wherein the left-right direction and the front-back direction are perpendicular to each other, and includes: Access segment; A displacement section, located above the access section and directly connected to the access section; The width of the displacement segment in the left-right direction gradually increases from top to bottom and then gradually decreases; The width of the displacement segment 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.
[0007] Furthermore, 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 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 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 an arc, an isosceles trapezoid or a right-angled trapezoid.
[0008] Furthermore, the projections of the first elastic section and the third elastic section along the left-right direction overlap.
[0009] Furthermore, two outer side surfaces of the second elastic section along the left-right direction are planes; The inner side surfaces of the first elastic section and the third elastic section that are opposite to each other along the left-right direction are planes.
[0010] Furthermore, two outer side surfaces of the second elastic segment along the front-to-back direction are arc surfaces with the same bending direction.
[0011] Furthermore, outer side surfaces of the first elastic segment and the third elastic segment along the left-right direction are arc surfaces with opposite bending directions.
[0012] Furthermore, 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 two outer side surfaces of the third elastic segment along the front-to-back direction are arc surfaces with the same bending direction.
[0013] 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; 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.
[0014] To achieve the above objectives, the present application also provides the following technical solutions: A crimping terminal assembly, comprising the crimping terminal as described in any one of the above, and further comprising: A docking module, wherein a plug-in slot / plug-in hole is recessed downward 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 the three elastic contact positions are stressed.
[0015] To achieve the above objectives, the present application also provides the following technical solutions: An electrical connector comprises a crimping terminal as described in any one of the above items and an insulating body fixed to the crimping terminal, wherein the electrical connector is used for electrically plugging with a docking connector.
[0016] Compared with the prior art, the beneficial effect of the present application is that the crimping terminal of the present application can achieve stable plugging and unplugging and contact with the docking module. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional schematic diagram of the crimping terminal assembly of the present application, specifically showing the three-dimensional state diagram of the crimping terminal after being inserted into a docking module.
[0018] Figure 2 It is a three-dimensional schematic diagram of the crimp terminal of the present application.
[0019] Figure 3 It is a front view of the crimp terminal of the present application.
[0020] Figure 4 It is a rear view of the crimp terminal of the present application.
[0021] Figure 5 It is a left side view of the crimp terminal of this application.
[0022] Figure 6 It is Figure 4 Section view along line AA.
[0023] Figure 7 It is Figure 4 A cross-sectional view along line BB, in which the dotted box is a schematic diagram of the location of the access section.
[0024] Figure 8 It is Figure 4 The cross-sectional view along the CC line, in which the dotted box is a schematic diagram of the location of the access section.
[0025] Fig. 9It is Figure 4 The cross-sectional view along the DD line, in which the dotted box is a schematic diagram of the location of the access section. DETAILED DESCRIPTION
[0026] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present application. 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 creative work are within the scope of protection of this application.
[0027] In order to accurately describe the entire application, all directions involved should be referred to as Figure 2 For reference, the direction of the X-axis is defined as the left-right direction, where the positive direction of X is right; the direction of the Y-axis is defined as the up-down direction (that is, the direction in which the crimp terminal is inserted / pulled out of the docking module 100), where the positive direction of the Y-axis is up; the direction of the Z-axis is defined as the front-back direction, where the positive direction of the Z-axis is front.
[0028] Please refer to Figures 1 to 9 As shown, a crimping terminal disclosed in the present application can be formed by stamping a metal plate. Specifically, the crimping 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 part 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.
[0029] In one embodiment of the present application, the displacement 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 connection section 21, and the lower ends are integrally connected to form a lower connection section 22. The upper connection section 21 is integrally connected to the neck section 6, and the lower connection section 22 is integrally connected to the access section 1.
[0030] 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.
[0031] The first elastic arm 3, the second elastic arm 4 and the third elastic arm 5 are respectively located in the middle of the upper connecting section 21 and the lower connecting section 22 to define the first elastic section 30, the second elastic section 40 and the 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 along the left-right direction and the front-back direction. Any one of the first elastic section 30, the second elastic section 40 and the third elastic section 50 can be elastically deformed at least along the left-right direction and the front-back direction. The material thickness of the first elastic section 30, the second elastic section 40 and the third elastic section 50 along the front-back direction is the same as that of the access section 1.
[0032] 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.
[0033] In some embodiments, along the front-to-back direction, the second elastic section 40 is misaligned with the first elastic section 30. Along the front-to-back direction, the second elastic section 40 is misaligned with the third elastic section 50; or in other words, along the left-right direction, the projections of the second elastic section 40 and the first elastic section 30 do not overlap, and in other words, along the left-right direction, the projections of the second elastic section 40 and the third elastic section 50 do not overlap. In this way, it can be ensured that the first elastic section 30, the second elastic section 40 and the third elastic section 50 can each be elastically deformed along the left-right direction and the front-to-back direction.
[0034] 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.
[0035] Further, 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.
[0036] 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.
[0037] 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 basically 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 with 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 with the upper connecting section 21. Of course, the vertical connection and inclined connection referred to here are not ideal states. Due to the processing requirements of the plate, each connection position (referring to: short side and right-angled waist, right-angled waist and upper connecting section 21, short side and inclined waist, inclined waist and lower connecting section 22) will require a smaller processing bending arc angle transition.
[0038] In other embodiments, the second elastic section 40 is bent and arched from the middle to the front end along 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 along 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 along the up-down direction to form an isosceles trapezoid.
[0039] Furthermore, the short side of the isosceles trapezoid formed by the second elastic section 40 is located behind the plane where the access section 1 and the neck section 6 are located, and is basically parallel to the plane where the access section 1 and the neck section 6 are located; the second elastic section 40 forms an inclined waist of the isosceles trapezoid located below the short side, and the inclined waist connects the short side and the lower connecting section 22; the second elastic section 40 forms another waist of the isosceles trapezoid located above the short side, and the inclined waist connects the short side and 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 (referring to: short side and inclined waist, inclined waist and upper connecting section 21, inclined waist and lower connecting section 22) will require a smaller processing bending arc angle transition.
[0040] 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, and 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 stressed at the three elastic contact positions. With such a design, the crimping terminal inserted into the docking module 2 can make the contact with the inner wall surface of the plug-in slot / plug-in hole 20 of the docking module 2 more stable, especially when the metal sheet material used to form the crimping terminal is relatively thin. In addition, the crimping terminal of the present application also has the advantages of easy manufacturing and stable structure.
[0041] In addition, the crimp 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 terminal can be installed and fixed in the insulating body, and 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, and a part of the terminal body section 7 is fixed in the insulating body, and other parts on the terminal body 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 crimping 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 segment in the left-right direction gradually increases from top to bottom and then gradually decreases; The width of the displacement segment 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, characterized in that: 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 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 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 an arc, an isosceles trapezoid or a right-angled trapezoid.
3. The crimp terminal according to claim 2, characterized in that: 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, characterized in that: 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 along the left-right direction are planes.
5. The crimp terminal according to claim 1, characterized in that: 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, characterized in that: The outer side surfaces of the first elastic section and the third elastic section along the left-right direction are arc surfaces with opposite bending directions.
7. The crimp terminal according to claim 1, characterized in that: 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, characterized in that: 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 crimping terminal assembly, comprising the crimping 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 downward 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 the three elastic contact positions are stressed.
10. An electrical connector, characterized in that: It comprises a crimping terminal as described in any one of claims 1 to 8 and an insulating body fixed to the crimping terminal, and the electrical connector is used for electrically plugging with a docking connector.