Conductive female terminal structure for connector
By introducing barrier shrapnel, upper contact, secondary shrapnel and limit structure into the connector female terminal structure, the problem of insufficient connection stability and contact reliability in the prior art is solved, and higher connection stability and contact reliability are achieved.
Patent Information
- Application Number
- CN202421845347.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-08-01
AI Technical Summary
The connection stability and contact reliability of the existing connector female terminals are insufficient, especially due to the infinity position and overvoltage of the connecting shrapnel, and the insufficient positive pressure of the main shrapnel leads to poor connection stability.
A conductive female terminal structure for connectors is designed. By setting a barrier shrapnel, upper contact, secondary shrapnel and limit structure in the mother terminal body, the barrier shrapnel prevents overpressure of the connecting shrapnel, and the upper contact and secondary shrapnel increase the contact area and positive pressure, and the limit structure limits the end of the main shrapnel.
Improve the connection stability and contact reliability of the connector, prevent overvoltage of the connection shrapnel, increase the positive pressure provided by the main shrapnel, and ensure stable contact and current signal between the male terminal and the female terminal.
Smart Images
Figure CN222851692U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of connectors, in particular to a conductive female terminal structure for a connector. Background Art
[0002] Connectors are widely used in many industrial fields, such as the field of automotive accessories. A set of connectors includes at least one male terminal and one female terminal. When the male terminal is inserted into the female terminal, a variety of mechanical and electrical designs are used to ensure a reliable electrical connection and a stable structure between the male terminal and the female terminal. The common female terminal design sets a spring structure in the female terminal, and uses the deformation of the spring to provide positive pressure to the contact part of the male terminal to ensure stable contact and stable current signal between the male terminal and the female terminal. In order to ensure reliable contact, it is generally required to design as large a deformation as possible within the performance limit of the material to provide a larger positive pressure. As a result, female terminals with double spring designs have emerged.
[0003] The double-spring-clip female terminal includes a hollow structure, into which the male terminal is inserted, and the female terminal has a cantilever spring that is unfolded in its cavity, which is used for elastic contact with the male terminal, and is referred to as the main spring. Above the main spring, there is another auxiliary spring, which is significantly shorter than the main spring, and is used to limit the main spring to increase the positive pressure and ensure the connection effect. However, the problem with the female terminal in the prior art is that the female terminal is also provided with a connecting spring that is fixedly connected to the plastic shell and can be deformed. The connecting spring is arranged above the main spring. In actual use, the connecting spring has no limit and may yield due to overpressure, resulting in functional failure. In addition, the connecting spring may touch the main spring after being compressed, resulting in reduced function of the main spring. In addition, when the female terminal and the male terminal are matched, the front end of the main spring is deformed upward after being acted upon by the male terminal, which will cause the positive pressure provided by the main spring to be too small, resulting in poor connection stability. Utility Model Content
[0004] In view of the deficiencies in the prior art, the main purpose of the utility model is to provide a conductive female terminal structure for a connector with high connection stability and contact reliability.
[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a conductive female terminal structure for a connector, comprising a female terminal body, the female terminal body comprising a cavity for inserting a male terminal, a cantilevered main spring piece being arranged above the cavity, a connecting spring piece for fixed connection with a plastic shell being arranged on the female terminal body above the main spring piece, a lower contact capable of contacting with the male terminal being arranged on the female terminal body below the main spring piece, a blocking spring piece capable of abutting against the connecting spring piece to prevent the connecting spring piece from being over-pressurized being arranged on the female terminal body between the main spring piece and the connecting spring piece, an upper contact being arranged correspondingly above the lower contact at the bottom of the main spring piece, a secondary spring piece capable of abutting against the main spring piece being arranged on the female terminal body at a position corresponding to the upper contact above the main spring piece, and a limiting structure capable of abutting against the main spring piece being arranged on the female terminal body above the end of the main spring piece.
[0006] Preferably, a gap of one is horizontally arranged between the blocking spring sheet and the female terminal body, and the blocking spring sheet is arranged closer to the side of the connecting spring sheet than the main spring sheet in the horizontal direction.
[0007] Preferably, a second gap is horizontally arranged between the connecting spring piece and the female terminal body, the auxiliary spring piece is arranged on the connecting spring piece and a third gap is vertically arranged between the connecting spring piece and the female terminal body, and the second gap is connected to the third gap.
[0008] Preferably, the main elastic piece includes a connecting section connected to the female terminal body, a middle section for setting the upper contact, and a contact section connected to the middle section, and the connecting section and the contact section are respectively arranged obliquely relative to the middle section.
[0009] Preferably, the contact section is provided with a protrusion that can contact the male terminal.
[0010] Preferably, a tail limiting hole is provided on the female terminal body, and an insertion block 1 inserted into the tail limiting hole is provided on the connecting section of the main elastic sheet.
[0011] Preferably, the limiting structure is a limiting spring piece integrally formed with the female terminal body.
[0012] Preferably, the limiting structure is two convex bumps arranged on the inner wall of the cavity of the female terminal body, and the end of the main elastic piece can abut against the two convex bumps.
[0013] Preferably, the limiting structure is a convex bump and a head limiting hole arranged on the inner wall of the cavity of the female terminal body, the end of the main spring piece can abut against the convex bump and an insertion block 2 inserted into the head limiting hole is arranged on the end of the main spring piece.
[0014] Preferably, a lower extension block capable of abutting against the blocking elastic sheet is provided at the bottom of the connecting elastic sheet.
[0015] The utility model has the following advantages over the prior art: by setting a blocking spring sheet, it is possible to prevent the connecting spring sheet from directly contacting the main spring sheet due to overpressure. By setting an upper contact corresponding to the lower contact, the contact area with the male terminal can be increased, thereby improving the contact connection stability. The provision of the auxiliary spring sheet can increase the positive pressure when the male terminal and the female terminal are mated, increase the contact stability, and improve the contact reliability, that is, the auxiliary spring sheet can prevent the main spring sheet from deforming too much, and can provide downward pressure when abutting against the main spring sheet. The provision of a limiting structure limits the end of the main spring sheet, and also increases the positive pressure during mating. Compared with the prior art, this solution has high connection stability and contact reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The structure of the conductive female terminal structure of the utility model is shown in FIG. Figure 1 ;
[0017] Figure 2 The structure of the conductive female terminal structure of the utility model is shown in FIG. Figure 2 ;
[0018] Figure 3 The structure of the conductive female terminal structure of the utility model is shown in FIG. Figure 3 ;
[0019] Figure 4 for Figure 3 Cross-sectional view of the AA section;
[0020] Figure 5 A cross-sectional view of the process of inserting a male terminal into the conductive female terminal of the utility model;
[0021] Figure 6 It is a structural schematic diagram of a male terminal inserted into a conductive female terminal of the utility model;
[0022] Figure 7 It is a schematic diagram of the structure of the conductive female terminal of the utility model before being inserted into the plastic shell;
[0023] Figure 8 It is a structural schematic diagram of the conductive female terminal of the utility model during the process of inserting into the plastic shell;
[0024] Fig. 9 This is a schematic diagram of the structure of the conductive female terminal of the utility model after being inserted into the plastic shell;
[0025] Fig.10 It is a schematic diagram of the structure of the conductive female terminal of the utility model before being removed from the plastic shell;
[0026] Fig.11 It is a structural schematic diagram of the conductive female terminal of the utility model during the process of being removed from the plastic shell;
[0027] Fig.12It is a schematic diagram of the structure of the conductive female terminal of the utility model after being removed from the plastic shell;
[0028] Fig.13 This is a structural schematic diagram of Embodiment 3 of the limiting structure of the utility model;
[0029] Fig.14 The structure diagram of the second embodiment of the limit structure of the utility model is shown in FIG. Figure 1 ;
[0030] Fig.15 The structure diagram of the second embodiment of the limit structure of the utility model is shown in FIG. Figure 2 .
[0031] In the figure: 1. female terminal body; 2. cavity; 3. main spring piece; 4. connecting spring piece; 5. lower contact; 6. blocking spring piece; 7. upper contact; 8. auxiliary spring piece; 9. limiting spring piece; 10. connecting section; 11. middle section; 12. contact section; 13. raised part; 14. lower extension block; 15. gap one; 16. gap two; 17. gap three; 18. tail limiting hole; 19. insert block one; 20. convex bump; 21. head limiting hole; 22. insert block two; 23. plastic shell; 24. locking mechanism; 25. terminal removal fixture; 26. male terminal. DETAILED DESCRIPTION
[0032] The utility model will be further described below in conjunction with the accompanying drawings.
[0033] like Figure 1 As shown, a conductive female terminal structure for a connector includes a female terminal body 1, the female terminal body 1 includes a cavity 2 for inserting a male terminal 26, a cantilevered main spring piece 3 is arranged above the cavity 2, a connecting spring piece 4 for fixedly connecting to a plastic shell 23 is arranged on the female terminal body 1 above the main spring piece 3, a lower contact 5 capable of contacting the male terminal 26 is arranged on the female terminal body 1 below the main spring piece 3, a blocking spring piece 6 capable of abutting the connecting spring piece 4 to prevent the connecting spring piece 4 from being over-pressurized is arranged between the main spring piece 3 and the connecting spring piece 4, an upper contact 7 is correspondingly arranged above the lower contact 5 at the bottom of the main spring piece 3, an auxiliary spring piece 8 capable of abutting the main spring piece 3 is arranged on the female terminal body 1 at a position corresponding to the upper contact 7 above the main spring piece 3, and a limiting structure capable of abutting the main spring piece 3 is arranged on the female terminal body 1 above the end of the main spring piece 3.
[0034] Refer to the attached Figure 7-9Before the female terminal is inserted into the plastic shell 23, the connecting spring 4 is in the initial state. As the female terminal is inserted, the connecting spring 4 is pressed down. When the female terminal is inserted into place, the connecting spring 4 bounces up again and returns to the initial position, and forms a primary lock with the plastic shell 23. Then the locking mechanism 24 of the plastic shell 23 is pressed down to form a secondary lock, which increases the holding force of the female terminal and makes the connection more stable and reliable.
[0035] Preferably, a gap 15 is horizontally arranged between the blocking spring piece 6 and the female terminal body 1 , and the blocking spring piece 6 is arranged closer to the side of the connecting spring piece 4 than the main spring piece 3 in the horizontal direction.
[0036] Preferably, a second gap 16 is horizontally arranged between the connecting spring piece 4 and the female terminal body 1 , the auxiliary spring piece 8 is arranged on the connecting spring piece 4 and a third gap 17 is vertically arranged between the connecting spring piece 4 and the female terminal body 1 , and the second gap 16 is connected to the third gap 17 .
[0037] Preferably, a lower extension block 14 capable of abutting against the blocking elastic sheet 6 is provided at the bottom of the connecting elastic sheet 4 .
[0038] See attached Figure 4 , the function of the blocking spring piece 6 is explained as follows: the blocking spring piece 6 can limit the connecting spring piece 4 laterally (left and right limit) to prevent the connecting spring piece 4 from hitting the main spring piece 3 after being pressed down. Because the blocking spring piece 6 is longer than the main spring piece 3, the bottom surface of the connecting spring piece 4 is lower than the blocking spring piece 6. When the conductive female terminal is inserted into the plastic shell 23 or the conductive female terminal is removed, the connecting spring piece 4 will deform when moving downward. The blocking spring piece 6 can effectively prevent the connecting spring piece 4 from deforming and hitting the main spring piece 3.
[0039] See attached Figure 6 And attached Figure 10-12 , the second function of the blocking spring 6 is explained as follows: the blocking spring 6 can limit the upper and lower positions of the connecting spring 4 to prevent the connecting spring 4 from being pressed too far downward. When disassembling the female terminal, use the terminal removal jig 25 to press the connecting spring 4 until the connecting spring 4 is lower than the surface of the plastic shell 23. In order to prevent the connecting spring 4 from being pressed too far downward, a blocking spring 6 is provided. The upper surface of the blocking spring 6 can contact the lower surface of the lower extension block 14 after the connecting spring 4 is pressed downward, preventing the connecting spring 4 from being pressed downward. In addition, there is a small gap 15 between the blocking spring 6 and the side of the female terminal body 1. The blocking spring 6 will move downward after being pressed downward by the lower extension block 14. This gap 15 is used to prevent the blocking spring 6 from moving after moving downward, and can limit the overpressure of the blocking spring 6. During the downward pressing of the connecting spring 4, the structure above the gap 2 16 will also move downward. The gap 2 16 is used to prevent this structure from moving downward, and can limit the overpressure here.
[0040] Preferably, the main elastic piece 3 includes a connecting section 10 connected to the female terminal body 1, an intermediate section 11 for setting the upper contact 7, and a contact section 12 connected to the intermediate section 11, and the connecting section 10 and the contact section 12 are respectively inclined relative to the intermediate section 11.
[0041] Preferably, the contact section 12 is provided with a protrusion 13 that can contact the male terminal 26 .
[0042] Refer to the attached Figure 5 After the male terminal 26 is inserted into the female terminal, the male terminal 26 first contacts the protrusion 13. This process can effectively remove foreign matter on the surface of the male terminal 26. As the male terminal 26 is inserted, the head of the male terminal 26 contacts the upper contact 7, and the main spring piece 3 moves upward. After the main spring piece 3 contacts the auxiliary spring piece 8, the auxiliary spring piece 8 moves upward. The gap 17 provides a limit for the auxiliary spring piece 8 after it is pressed upward and deformed. The auxiliary spring piece 8 mainly increases the positive pressure of the main spring piece 3. The limit spring piece 9 also increases the positive pressure of the main spring piece 3 and plays a limit role on the end of the main spring piece 3.
[0043] Preferably, a tail limiting hole 18 is provided on the female terminal body 1 , and an inserting block 19 inserted into the tail limiting hole 18 is provided on the connecting section 10 of the main elastic piece 3 .
[0044] Refer to the attached Figure 3 The main spring piece 3 is limited by the cooperation between the tail limiting hole 18 and the inserting block 19.
[0045] Preferably, the limiting structure is a limiting spring piece 9 integrally formed with the female terminal body 1 .
[0046] Preferably, the limiting structure is two convex bumps 20 arranged on the inner wall of the cavity 2 of the female terminal body 1 , and the end of the main elastic sheet 3 can abut against the two convex bumps 20 .
[0047] Preferably, the limiting structure is a convex 20 and a head limiting hole 21 arranged on the inner wall of the cavity 2 of the female terminal body 1, the end of the main spring piece 3 can abut against the convex 20 and an insertion block 22 inserted into the head limiting hole 21 is arranged on the end of the main spring piece 3.
[0048] The limiting structure of this solution includes but is not limited to three embodiments. Embodiment 1: Refer to the attached Figure 2 The limiting structure is a limiting spring piece 9 integrally formed with the female terminal body 1. Figure 14-15 The limiting structure is two convex bumps 20 arranged on the inner wall of the cavity 2 of the female terminal body 1, and the end of the main spring piece 3 can abut against the two convex bumps 20. Fig.13The limiting structure is a convex 20 and a head limiting hole 21 arranged on the inner wall of the cavity 2 of the female terminal body 1. The end of the main spring piece 3 can abut against the convex 20 and an insertion block 22 inserted into the head limiting hole 21 is arranged on the end of the main spring piece 3. The end of the main spring piece 3 is limited by the cooperation between the head limiting hole 21 and the insertion block 22 and the convex 20.
[0049] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A conductive female terminal structure for a connector, comprising a female terminal body, the female terminal body comprising a cavity for inserting a male terminal, a cantilevered main spring piece arranged above the cavity, a connecting spring piece for fixed connection with a plastic shell arranged above the main spring piece on the female terminal body, and a lower contact capable of contacting with a male terminal arranged below the main spring piece on the female terminal body, characterized in that: The female terminal body is provided with a blocking spring sheet between the main spring sheet and the connecting spring sheet, which can abut the connecting spring sheet to prevent the connecting spring sheet from being over-pressurized; the bottom of the main spring sheet is provided with an upper contact corresponding to the lower contact; the female terminal body is provided with a secondary spring sheet that can abut the main spring sheet at a position corresponding to the upper contact above the main spring sheet; and the female terminal body is provided with a limiting structure that can abut the main spring sheet above the end of the main spring sheet.
2. A conductive female terminal structure for a connector according to claim 1, characterized in that: A gap one is horizontally arranged between the blocking spring sheet and the female terminal body, and the blocking spring sheet is arranged closer to the side of the connecting spring sheet than the main spring sheet in the horizontal direction.
3. A conductive female terminal structure for a connector according to claim 2, characterized in that: A second gap is horizontally arranged between the connecting spring piece and the female terminal body, the auxiliary spring piece is arranged on the connecting spring piece and a third gap is vertically arranged between the connecting spring piece and the female terminal body, and the second gap is connected to the third gap.
4. A conductive female terminal structure for a connector according to any one of claims 1 to 3, characterized in that: The main elastic piece includes a connecting section connected to the female terminal body, a middle section for setting the upper contact, and a contact section connected to the middle section. The connecting section and the contact section are respectively arranged obliquely relative to the middle section.
5. A conductive female terminal structure for a connector according to claim 4, characterized in that: The contact section is provided with a protrusion that can contact the male terminal.
6. A conductive female terminal structure for a connector according to claim 4, characterized in that: The female terminal body is provided with a tail limiting hole, and the connecting section of the main elastic sheet is provided with an insertion block 1 inserted into the tail limiting hole.
7. A conductive female terminal structure for a connector according to claim 4, characterized in that: The limiting structure is a limiting spring piece integrally formed with the female terminal body.
8. A conductive female terminal structure for a connector according to claim 4, characterized in that: The limiting structure is two convex bumps arranged on the inner wall of the cavity of the female terminal body, and the end of the main elastic sheet can abut against the two convex bumps.
9. A conductive female terminal structure for a connector according to claim 4, characterized in that: The limiting structure is a convex bump and a head limiting hole arranged on the inner wall of the cavity of the female terminal body. The end of the main spring piece can abut against the convex bump and an insertion block 2 inserted into the head limiting hole is arranged on the end of the main spring piece.
10. The conductive female terminal structure for a connector according to claim 1, characterized in that: The bottom of the connecting elastic sheet is provided with a lower extending block capable of abutting against the blocking elastic sheet.