lever spring terminal

Abstract

The utility model discloses a lever elastic sheet terminal belongs to connector technical field, including board end needle seat, pin, wire end hole seat, terminal main part, fixed shell, lever elastic sheet and lock piece, and terminal main part left and right opening is provided with fixed shell on terminal main part, and lever elastic sheet longitudinal pairing is arranged, and is installed in the inside of fixed shell, and terminal main part is inserted in wire end hole seat, and one end of wire end hole seat is installed with lock piece, and the other end of wire end hole seat is inserted with board end needle seat, and pin one end passes through board end needle seat and is inserted in lever elastic sheet. Solveed the operator when feeling the first force feedback peak, easy to misjudge that pin has been completely inserted in place, stop inserting action, lead to actually only front end contact contact and rear end contact not contact or contact badly, the problem of false insertion phenomenon, realized the connector overall structure compact, plug -in operation simple and clear, mechanical lock buckle firm and the comprehensive advantage of being convenient for manufacture maintenance.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to lever spring terminals. Background Technology

[0002] In modern electronic devices, connectors serve as crucial interfaces for signal transmission and power delivery, and the reliability, stability, and ease of operation of their connections are paramount. Especially for connectors that require frequent mating or removal or operate in vibrating environments, preventing loose connections is a core element in ensuring the functional safety of the equipment.

[0003] While traditional two-contact connector designs theoretically improve contact redundancy and reliability, they often face a significant problem in practical applications: when a pin is inserted, it first overcomes the spring force of the first contact, generating a noticeable force feedback peak. Subsequently, it needs to continue insertion, overcoming the spring force of the second contact (the rear contact), generating a second force feedback peak. When the operator feels the first force feedback peak, they may misjudge that the pin is fully inserted and stop the insertion process, resulting in only the front contact making contact while the rear contact is not making contact or has poor contact—a phenomenon known as "partial insertion." In this state, the connection resistance increases, signal transmission becomes unstable, and intermittent equipment failure or even complete malfunction may occur.

[0004] Therefore, how to provide a lever spring terminal to solve the defects of existing connector structures is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To address this issue, the present invention provides a lever spring terminal to solve the problem in the prior art where the traditional terminal design causes the operator to misjudge that the pin is fully inserted and stop the insertion action, resulting in a partial insertion phenomenon.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a lever spring terminal, including:

[0008] The terminal body has openings on the left and right sides, and a fixing shell is provided on the terminal body;

[0009] Lever springs, arranged in pairs longitudinally, are installed inside the fixed housing;

[0010] The terminal body is inserted into the wire terminal hole seat, one end of the wire terminal hole seat is equipped with a locking piece, and the other end of the wire terminal hole seat is inserted with a plate end pin seat;

[0011] The pin has one end passing through the pin seat at the end of the plate and is inserted into the lever spring.

[0012] In one possible implementation, the lever spring is arranged in an S-shape, including:

[0013] Connecting blocks are arranged in pairs and symmetrically installed on the inner wall of the fixed shell;

[0014] A spring support is installed on the symmetrical sidewalls of the two connecting blocks. The end of the spring support facing the plate end pin seat has an integrally formed front part of the spring, and the other end of the spring support has an integrally formed rear part of the spring.

[0015] In one possible implementation, the plate-end pin seat includes:

[0016] The outer casing of the hole base has several pin holes on one end surface;

[0017] Slots, arranged in pairs, are provided at the other end of the socket housing, with the pairs of slots arranged on both sides of the pin hole;

[0018] An elastic limiting piece is installed on the outer wall of the housing of the hole seat.

[0019] In one possible implementation, the wire end hole seat includes:

[0020] The needle socket body has several terminal holes on one end surface and several pin connection holes on the other end surface, and the terminal holes are connected to the pin connection holes.

[0021] An external locking buckle is installed on the outer wall of the needle holder body.

[0022] In one possible implementation, solder pads are also included, arranged in pairs and inserted into the pairs of slots respectively.

[0023] In one possible implementation, the locking plate includes a locking plate body and a limiting plate, with the limiting plate extending from one outer wall of the locking plate body.

[0024] This utility model has the following advantages:

[0025] This utility model's lever spring terminal achieves reliable dual-contact functionality with a single-stage force through its core S-shaped lever spring structure design. Specifically, by longitudinally pairing S-shaped lever springs within the fixed housing of the signal terminal and utilizing their unique lever principle, it achieves simultaneous and reliable dual-point contact between the front and rear contacts and the pins, with only a single, continuous force sensation generated throughout the insertion process. This completely eliminates the risk of misinterpretation of proper insertion caused by the "two-stage force" in traditional dual-contact structures, fundamentally ensuring reliable dual-contact contact and stable signal transmission for each connection. Simultaneously, the modular combination design of the board-end pin seat, wire-end hole seat, and paired solder pads achieves a comprehensive advantage of compact overall connector structure, simple and clear insertion and removal operations, stable mechanical locking, and ease of manufacturing and maintenance. Attached Figure Description

[0026] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0027] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] Figure 1 A perspective view of the lever spring terminal provided by this utility model;

[0029] Figure 2 A perspective view of the lever spring terminal and pin mating provided by this utility model;

[0030] Figure 3 A side sectional view of the lever spring terminal provided by this utility model;

[0031] Figure 4 Detailed side section view of the lever spring terminal provided by this utility model;

[0032] Figure 5 A top view of the lever spring terminal provided by this utility model;

[0033] Figure 6 A perspective view of the plate end pin seat provided by this utility model;

[0034] Figure 7 A perspective view of the wire end hole seat provided by this utility model;

[0035] Figure 8 A perspective view of the locking plate provided for this utility model;

[0036] In the diagram: 1. Plate end pin seat; 11. Hole seat outer shell; 13. Elastic limiting piece; 14. Pin hole; 15. Slot; 2. Pin; 3. Wire end hole seat; 31. Pin seat body; 33. External locking buckle; 34. Terminal socket; 36. Pin connection hole; 4. Solder piece; 51. Terminal body; 52. Fixing shell; 53. Lever spring; 531. Spring front part; 532. Spring support part; 533. Spring rear part; 534. Connecting block; 6. Locking piece; 61. Locking piece body; 62. Limiting plate. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] Please refer to Figures 1-8 The lever spring terminal disclosed in this utility model will now be described. This utility model consists of eight parts, such as... Figures 1-3 It includes a plate end pin seat 1, a pin 2, a wire end hole seat 3, a solder piece 4, a terminal body 51, a fixing shell 52, a lever spring 53, and a locking piece 6. The terminal body 51 has openings on the left and right sides. The fixing shell 52 is provided on the terminal body 51. The lever springs 53 are arranged in pairs longitudinally and installed inside the fixing shell 52. The terminal body 51 is inserted into the wire end hole seat 3. The locking piece 6 is installed at one end of the wire end hole seat 3. The plate end pin seat 1 is inserted at the other end of the wire end hole seat 3. One end of the pin 2 passes through the plate end pin seat 1 and is inserted into the lever spring 53.

[0039] In use, this invention inserts the pin 2 into the insertion hole 3 on the pin holder 1 at the plate end. Initially, the pin 2 slides past the front part 531 of the lever spring 53 without interference or effective resistance. As the pin 2 continues to penetrate and contact the rear part 533 of the spring, interference begins to form and it is resisted by a force. At this point, the unique elastic S-shaped structure of the lever spring 53 plays a crucial role: the force on the rear part 533 generates a lever effect through the fulcrum spring support part 532 and the connecting block 534, driving the front part 531 to apply a strong, opposite-direction squeezing force to the pin 2. This process simultaneously achieves reliable clamping of the pin 2 by both front and rear contacts, and only generates a continuous increasing insertion force, completely avoiding the risk of misjudgment of insertion due to the front contact generating the first force.

[0040] In a specific embodiment, such as Figures 4-5 The lever spring 53 is S-shaped and includes a front part 531, a support part 532, a rear part 533, and a connecting block 534. The connecting blocks 534 are arranged in pairs and symmetrically installed on the inner wall of the fixed shell 52. The spring support part 532 is installed on the symmetrical side walls of the two connecting blocks 534. The front part 531 of the spring is integrally formed at one end of the spring support part 532 facing the pin seat 1, and the rear part 533 of the spring is integrally formed at the other end. The lever spring 53 adopts an elastic S-shaped structure design. The initial resistance is generated by the interference between the rear part 533 and the pin 2. Then, with the connecting block 534 as the fulcrum, the mechanical energy is accurately converted into the active clamping force of the front part 531 of the spring through the lever transmission of the spring support part 532. This process enables simultaneous activation of both contacts with a single force application, ensuring absolute reliability of the electrical connection. It also integrates the traditional two-stage contact force into a single continuous insertion force, fundamentally eliminating the risk of incomplete insertion. This lever transmission mechanism not only optimizes the operating feel but also improves the overall performance of the connector.

[0041] In a specific embodiment, such as Figure 6The board-end pin holder 1 includes a socket housing 11, an elastic limiting piece 13, pin holes 14, and slots 15. Several pin holes 14 are formed on one end surface of the socket housing 11. Slots 15 are arranged in pairs at the other end of the socket housing 11, with the pairs of slots 15 positioned on both sides of the pin holes 14. The elastic limiting piece 13 is mounted on the outer wall of the socket housing 11. The board-end pin holder 1 adopts a modular design to achieve multi-functional integration. Its socket housing 11 forms the main frame, and the pin holes 14 inside are arranged in a precise array to ensure accurate positioning and reliable fixation of the pins 2. The slots 15 symmetrically arranged on both sides of the housing form an interference fit with the solder pads 4, preventing the wire-end pin holder 3 from moving horizontally. The elastic limiting piece 13 on the outer wall has a dual function: providing progressive damping during insertion and forming a click-locking mechanism with the wire-end pin holder 3 when fully inserted. This structural design ensures precise alignment between the pin 2 and the lever spring 53, and also provides vibration protection for the connector through mechanical interlocking, thereby improving the overall insertion and removal life.

[0042] In a specific embodiment, such as Figure 7 The wire end socket 3 includes a pin holder body 31, an outer locking buckle 33, terminal insertion holes 34, and pin connection holes 36. Several terminal insertion holes 34 are formed on one end surface of the pin holder body 31, and several pin connection holes 36 are formed on the other end surface of the pin holder body 31. The terminal insertion holes 34 and pin connection holes 36 are interconnected. The outer locking buckle 33 is installed on the outer wall of the pin holder body 31. The pin holder body 31 has precisely interconnected terminal insertion holes 34 and pin connection holes 36 inside, forming a two-stage channel. The terminal insertion holes 34 ensure accurate positioning of the lever spring terminal, while the pin connection holes 36 guide the pin 2 to accurately insert into the working area of ​​the lever spring 53. The outer locking buckle 33 adopts an elastic cantilever structure design, which cooperates with the elastic limiting piece 13 of the plate end pin holder 1 during the insertion process to ultimately achieve a locking mechanism. Simultaneously, the special texture design of the inner wall of the terminal insertion hole 34 effectively reduces the coefficient of friction during insertion and removal, making the operation smoother and more comfortable.

[0043] In one specific embodiment, the solder pads 4 are arranged in pairs and inserted into paired slots 15. The function of the solder pads 4 is to realize the integrated design of electrical connections. The solder pads 4 are directly soldered onto the PCB board to establish a grounding shielding loop and reduce high-frequency interference.

[0044] In a specific embodiment, such as Figure 8The locking plate 6 includes a locking plate body 61 and a limiting plate 62, with the limiting plate 62 extending from one outer wall of the locking plate body 61. The locking plate body 61 and the limiting plate 62 work together to protect the connector. The limiting plate 62 has a locking tooth structure, which engages with the wire end hole seat 3 during sliding, ensuring that the terminal body 51 is stably inserted into the wire end hole seat 3, thus guaranteeing both industrial-grade reliability and ergonomic requirements.

[0045] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A lever spring terminal, characterized in that, include: Terminal body (51) has openings on the left and right sides, and a fixing shell (52) is provided on the terminal body (51). Lever springs (53) are arranged in pairs longitudinally and installed inside the fixed housing (52); The terminal body (51) is inserted into the wire end hole seat (3), one end of the wire end hole seat (3) is equipped with a locking piece (6), and the other end of the wire end hole seat (3) is inserted with a plate end pin seat (1). The pin (2) passes through the plate end pin seat (1) and is inserted into the lever spring (53).

2. The lever spring terminal as described in claim 1, characterized in that, The lever spring (53) is S-shaped and includes: Connecting blocks (534) are arranged in pairs and symmetrically installed on the inner wall of the fixed shell (52); The spring support part (532) is installed on the symmetrical sidewalls of the two connecting blocks (534). The spring support part (532) has a spring front part (531) integrally formed at one end facing the plate end pin seat (1), and a spring rear part (533) integrally formed at the other end.

3. The lever spring terminal as described in claim 1, characterized in that, The plate end pin seat (1) includes: The outer shell of the hole seat (11) has several pin holes (14) on one end surface. Slots (15), arranged in pairs, are provided at the other end of the socket housing (11), and the pairs of slots (15) are provided on both sides of the pin hole (14); An elastic limiting piece (13) is installed on the outer wall of the housing (11) of the hole seat.

4. The lever spring terminal as described in claim 1, characterized in that, The wire end hole seat (3) includes: The pin socket body (31) has several terminal sockets (34) on one end surface and several pin connection holes (36) on the other end surface. The terminal sockets (34) are connected to the pin connection holes (36). An external locking buckle (33) is installed on the outer wall of the needle seat body (31).

5. The lever spring terminal as described in claim 3, characterized in that, It also includes solder pads (4), which are arranged in pairs and inserted into the pairs of slots (15).

6. The lever spring terminal as described in claim 1, characterized in that, The locking plate (6) includes a locking plate body (61) and a limiting plate (62), with the limiting plate (62) extending from one outer wall of the locking plate body (61).

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