WO2021047661A1

WO2021047661A1 - Quick-connection screw-free wiring terminal

Info

Publication number: WO2021047661A1
Application number: PCT/CN2020/114917
Authority: WO
Inventors: 王旭阳; 李百芝
Original assignee: 王旭阳; 李百芝
Priority date: 2019-09-12
Filing date: 2020-09-11
Publication date: 2021-03-18
Also published as: CN210897677U

Abstract

The present invention relates to a quick-connection screw-free wiring terminal. The terminal comprises a handle, an upper cover, a base, a conductive plate and an elastic leaf spring. The handle is hinged on the upper cover; the upper cover is provided with a wire inlet hole and a wire outlet hole; the elastic leaf spring is provided with a positioning plate and an extension pressing leaf spring, a contact leaf spring formed by stamping is arranged at a position, close to the top end, of the pressing leaf spring, and pressing sheets are formed on two sides of the contact leaf spring; and the handle is provided with a push plate and pressing plates which extend obliquely downwards from a front side edge and a rear side edge of one end of the push plate, the pressing plates abut against the pressing sheets, and the contact leaf spring abuts against a conductive member. According to the present invention, after the pressing leaf spring is divided into the pressing sheets and the contact leaf spring, the pressing sheets can be pressed down by means of the pressing plates by only pushing up the handle, so as to drive the contact leaf spring to deform downwards along with the pressing sheets, then a wire is directly inserted into the wire inlet hole and the wire outlet hole, and the handle is loosened, thereby achieving a simple structure and stable and reliable wiring.

Description

Fast connection screw-free terminal

Technical field

The invention specifically relates to a quick connection screw-free terminal.

Background technique

As we all know, the terminal is a kind of intermediate connector used to realize the electrical connection, and its main function is to facilitate the electrical connection of the wire; there are generally two types of terminal in the existing market, one of which is to use screws to connect the wires. Fastened terminal blocks. Because of the need to adjust the tightening of the screws when connecting the wires, the terminal blocks of this structure greatly affect the installation efficiency of electricians, and their use occasions are more sophisticated, such as in turbulent environments or outdoor occasions. After a long time of use, the screws are relatively easy to loosen, which will cause the wires to fall off or have poor contact, which limits their service life; the second is the fast connection terminal without screw adjustment. The main defect of this type of screw-free structure terminal is : Generally, it is only suitable for the direct insertion of hard wires to form electrical connections. If soft wires need to be inserted into the terminal, it is often because the terminal does not have an adjustable contact spring structure, which greatly increases the wiring At the same time, some manufacturers have introduced a kind of elastic reed that opens a through hole in the terminal, and then when a flexible cord needs to be connected, a screwdriver is used to pass through the through hole to forcibly set the elastic reed in the terminal cavity Deformed, and then insert the flexible wire through the inlet hole. The terminal of this structure has a defect: external force (such as a screwdriver, etc.) will easily deform the elastic reed destructively, which will affect the wiring effect; For the above factors, the applicant has developed and designed the fast screw-free terminal of the present invention.

technical problem

The purpose of the present invention is to provide a quick screw-free connection terminal with simple structure, stable and reliable connection and not easy to damage the elastic spring.

Technical solutions

In order to achieve the above objective, the present invention relates to a quick-connect screw-free terminal, including a handle, a top cover and a base that are clamped in one piece, and a conductive plate and elastic springs arranged in the inner cavity of the terminal. In this specification, all The clamping structure of the upper cover and the base is specifically described as follows: the upper cover has a downwardly extending clamping plate, the clamping plate has a wedge-shaped clamping part, and the front and rear side walls of the base are connected to the The position corresponding to the wedge-shaped clamping portion forms a clamping hole, and the upper cover and the base form an integrated structure through the clamping connection of the wedge-shaped clamping portion and the clamping hole; the handle is hinged on the upper cover , The upper cover is provided with a wire inlet hole and a wire outlet hole, the elastic reed has a positioning plate and a pressure reed extending obliquely upward from the edge of the positioning plate, and the pressure reed has a stamping on the position near the top end. A molded contact reed, two sides of the contact reed form a pressing piece, the handle has a push plate and a pressing plate extending obliquely downward from the front and rear edges of one end of the push plate, the pressing plate Form abutment with the pressing plate, and the contact reed forms abutment with the conductive member; in this specification, the hinge structure between the handle and the upper cover is specifically described as follows: the outer side of the pressing plate A cylindrical flange is formed on the upper cover, the upper end surface of the upper cover is provided with a longitudinal opening, the front and rear two side walls of the longitudinal opening form a longitudinal adapting groove, and the handle is aligned with the longitudinal The fitting of the matching groove forms a hinged connection with the upper cover.

In this specification, in order to enable the elastic reed to be effectively constrained on the base, a limit beam is provided on the base at the lateral sides of the positioning plate to limit the lateral deviation of the elastic reed, so The front and rear sides of the positioning plate form a concave positioning groove near the middle position, and the position corresponding to the positioning groove on the base forms a longitudinal limit plate that is adapted to the positioning groove. And the arrangement of the longitudinal limit plate makes the elastic reeds be effectively constrained in both the lateral direction and the forward direction, which further ensures the reliability of the connection.

At the same time, when the inlet and outlet holes of the wiring terminal in this manual are respectively opened on the lateral sides of the upper cover, in order to avoid the introduction of the wires of the inlet and outlet holes from contacting the inner cavity of the wiring terminal, the The conductive plate is provided with a longitudinal partition plate formed by stamping in the middle position.

On the handle, a position close to the pressure plate has a longitudinal limit beam extending longitudinally downward from the push plate, and a position on the conductive plate close to the longitudinal limit beam is perpendicular to the conductive plate The extended longitudinal limit wall, the longitudinal limit wall and the longitudinal limit beam form an adjacent connection, the so-called adjacent connection, refers to the longitudinal limit beam and the longitudinal limit wall, in the transverse direction Fit state.

Beneficial effect

Through the above improvements to the prior art, the present invention achieves the following beneficial effects: due to the pressing and forming of the elastic reed, the pressure reed is decomposed into contact reeds and pressure plates distributed on both sides of the contact reed, when pushed up When the handle of the handle pushes the plate, it can prompt the pressure plate to press down on the pressure piece, thereby driving the contact reed to deform downward, and then directly insert the wire into the wire inlet and outlet holes, and then release the handle. The skilled person should be aware that the pressure plate of the handle in this manual does not directly press down the contact reeds, but presses down the pressure plates on both sides of the contact reeds to drive the contact reeds to deform accordingly. This structure can Effectively avoid the permanent destructive deformation of the elastic reed due to human factors (such as the staff pushing the handle excessively), that is, when the staff pushes the push plate of the handle excessively, at best, it will only make the pressure sheet deformation difficult to restore to its original state. The contact reed will not be destructively deformed due to this. Therefore, the use of indirect deformation of the contact reed can greatly improve the service life of the terminal, and the reliability and stability of the wiring are also reflected incisively and vividly. .

Description of the drawings

Fig. 1 is a three-dimensional schematic diagram of Embodiment 1 of the present invention.

Fig. 2 is a plan view in the first embodiment.

Fig. 3 is a cross-sectional view along the A-A direction in Fig. 2.

Fig. 4 is an exploded schematic diagram of Fig. 1.

FIG. 5 is a three-dimensional schematic diagram of the handle in Embodiment 1. FIG.

FIG. 6 is a three-dimensional schematic diagram of the elastic reed in embodiment 1. FIG.

FIG. 7 is a three-dimensional schematic diagram of the base in Embodiment 1. FIG.

FIG. 8 is a three-dimensional schematic diagram of the upper cover in Embodiment 1. FIG.

Fig. 9 is a three-dimensional schematic diagram of Embodiment 2 of the present invention.

Fig. 10 is an exploded schematic diagram of Fig. 9.

Fig. 11 is a perspective schematic view of Fig. 9 with the upper cover and the handle removed.

Fig. 12 is a perspective schematic view of Fig. 9 with the upper cover and the base removed.

Embodiments of the present invention

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, but only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be configured and operate in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

In the present invention, unless otherwise clearly defined and defined, the terms "installed", "connected", "connected", "fixed", "set" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise clearly defined and defined, the first feature is "on" or "under" the second feature, which may include direct contact between the first and second features, or may include the first and second features. The features are not in direct contact but through other features between them. Moreover, "above", "above" and "above" the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or only that the level of the first feature is higher than that of the second feature. The "below", "below" and "below" the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Example 1:

As shown in Figures 1 to 8, this embodiment relates to a quick-connect screw-free terminal. As shown in Figure 1 in conjunction with Figure 4, it is obvious that the terminal includes a handle 3, an upper cover 2 and a base 1 that are snapped into one body, and a set In the conductive plate 4 and the elastic spring 5 in the inner cavity of the connecting terminal, in this embodiment, the clamping structure of the upper cover 2 and the base 1 is described in detail as follows: Figures 4 and 8 show that the upper cover 2 is There is a downwardly extending clamping plate 20, the clamping plate 20 has a wedge-shaped clamping portion 200, as further shown in FIG. 7, on the front and rear two side walls of the base 1, corresponding to the wedge-shaped clamping portion 200 The position forms a clamping hole 10, and the upper cover 2 and the base 1 form an integrated structure through the clamping connection of the wedge-shaped clamping portion 200 and the clamping hole 10; as clearly shown in FIG. 1, the handle 3 is hinged to On the upper cover 1, as shown in FIG. 3, the upper cover 2 is provided with a wire inlet 21 and a wire outlet 22 on both lateral sides respectively. As shown in FIG. 6, the elastic reed 5 has a positioning plate 50 and a slave The lateral sides of the positioning plate 50 have compression springs 51 extending obliquely upwards. The compression springs 51 have contact springs 510 formed by stamping near the top end, and the contact springs 510 are formed on both sides of the contact springs 510. Pressing piece 511, as shown in FIG. 2 in conjunction with FIG. 5, it can be seen that the handle 3 has a push plate 30 and a pressing plate 31 extending obliquely downward from the front and rear edges of one end of the push plate 30, as shown in FIG. 3 It can be seen that the pressing plate 31 abuts the pressing piece 511, and the contact spring 510 abuts the guide plate 4; in this embodiment, the hinged connection between the handle 3 and the upper cover 2 The structure is specifically described as follows: As shown in FIG. 5, a cylindrical flange 310 is formed on the outer surface of the pressing plate 31, and as shown in FIG. 8, the upper end surface of the upper cover 2 is provided with a longitudinal opening 23, the longitudinal opening 23 The front and back two side walls of the front and rear sides form a longitudinal adapting groove 230, and the handle 3 forms an articulated connection with the upper cover 2 through the adaptation of the cylindrical flange 310 and the longitudinal adapting groove 230.

In this embodiment, Fig. 3 combined with Fig. 7 clearly shows that in order to make the elastic reed 5 be effectively restricted on the base 1, the position on the base 1 located on the lateral sides of the positioning plate 50 is used for The limit beam 11 that limits the lateral deviation of the elastic reed 5, the front and rear sides of the positioning plate 50 form a concave positioning groove 500 near the middle position, and the base 1 corresponds to the positioning groove 500 The position forms a longitudinal limit plate 12 adapted to the positioning groove 500, and through the arrangement of the limit beam 11 and the longitudinal limit plate 12, the elastic reed 5 is effectively constrained in both the lateral direction and the forward direction. , To further ensure the reliability of the wiring. At the same time, as shown in Figs. 3 and 4, in this embodiment, in order to avoid the introduction of the lead-in hole 21 and the lead-out hole 22 from contacting the inner cavity of the terminal, a stamping is specially set in the middle of the conductive plate 4 Molded longitudinal partition 40.

In this embodiment, on the handle 3 and close to the pressing plate 31, there is a longitudinal limiting beam 301 extending longitudinally downward from the pushing plate 30, and the conductive plate 4 is close to the longitudinal limiting beam. The position of the beam 301 has a longitudinal limit wall 41 extending perpendicular to the conductive plate 4. As is obvious from FIG. 3, the longitudinal limit wall 41 is adjacent to the longitudinal limit beam 301. It can be seen that the so-called adjacent means that the longitudinal limit beam 301 and the longitudinal limit wall 41 are in a bonded state in the transverse direction. In addition, FIG. 1 combined with the display of FIG. 2 and FIG. 7 shows that one of the side walls of the base 1 has a protruding longitudinal plug-in board 13 with a trapezoidal cross-section, and the base 1 is plugged into the longitudinal direction. The other side wall corresponding to the plate 13 is provided with a concave longitudinal inserting groove 14 with a trapezoidal cross-section, and the longitudinal inserting plate 13 is adapted to the longitudinal inserting groove 14; the configuration of this structure can be A plurality of connecting terminals of this embodiment are effectively plugged and connected in parallel to form a terminal block, which greatly meets the requirement of convenient and large-scale wiring in actual use.

In this embodiment, the compression spring 51 on the elastic spring 5 is stamped and formed into a contact spring 510 and pressure springs 511 distributed on both sides of the contact spring 510. When the push plate of the handle 3 is pushed up 30, the pressing plate 31 can be forced to press down the pressing piece 511, thereby driving the contact spring 510 to deform downward, and then directly insert the wire into the wire inlet 21 and the wire outlet 22, and then release the handle 3. Those skilled in the art should know that the pressing plate 31 of the handle 3 in this embodiment does not directly press down the contact reed 510, but presses down the pressing pieces 511 on both sides of the contact reed 510 to drive the contact reed 510. 510 is deformed accordingly. This structure can effectively avoid the permanent destructive deformation of the elastic reed 5 due to human factors (such as the staff pushing the handle 3 excessively), that is, when the pressure reed 51 is set in this embodiment After forming the structure of the pressing piece 511 and the contact reed 510, if the staff pushes the push plate 30 of the handle 3 excessively, at best it will only deform the pressing piece 511 and make it difficult to restore the original shape, while the contact reed 510 will not cause damage. Due to destructive deformation, the use of indirect deformation of the contact reed 510 (instead of directly acting on the contact reed 510 by the pressing plate 31) greatly improves the service life of the terminal and the reliability of the connection And stability is also reflected incisively and vividly.

Example 2:

Figures 9-12 show the specific structure of Embodiment 2. The main difference between this embodiment and Embodiment 1 is that Embodiment 1 is a wiring method on both sides of the lateral direction with one in and one out, while Embodiment 2 is in the same direction The wiring method, that is, the inlet hole 21 and the outlet hole 22 in the embodiment 2 are arranged on the same side of the terminal. Therefore, in terms of the overall structure, the main difference from the embodiment 1 is reflected in the elastic reed 5 and the base 1. And the upper cover 2, those skilled in the art can know by combining the figures shown in Fig. 10, Fig. 11 and Fig. 12 that the conductive plate 4 in the second embodiment has an additional connecting plate 42 to align the direction of the inlet hole 21 and the outlet hole 22 The conductive parts of the slabs are connected in one piece, and the longitudinal partition 40 is cancelled, thereby forming an integral conductive plate 4. Correspondingly, the elastic reeds 5 are also connected in parallel in the same direction, so that the corresponding base 1 And the upper cover 2 has undergone corresponding structural adjustments, and this adjustment is an extension of the spirit of the technical solution of the embodiment 1, which can be clearly seen from FIGS. 9-12. Therefore, for those skilled in the art, the embodiment The assembly method of the overall structure of the terminal 2 is the same as that of the embodiment 1, and it does not affect the understanding.

In addition, it can be clearly seen from FIG. 9 that there is another significant difference between Embodiment 2 and Embodiment 1 in that a test hole 24 is provided in the middle of the upper end surface of Embodiment 1 for electrician testing whether or not it is energized. The design of separately opening a test hole 24 is also very common in the prior art and belongs to the common knowledge of those skilled in the art. However, as shown in FIG. 9 in Embodiment 2, the handle 3 and the upper cover 2 are used in the transverse direction. A sufficiently large gap is deliberately left as the test hole 24, that is, the terminal in Example 2 takes into account the overall appearance of the product and other effects such as exquisite beauty, deliberately starting from the design, the test hole 24 is designed into the assembly feature, and It is not deliberately opening a test hole on the shell 1, which reflects its ingenious design.

Claims

A quick-connect screw-free terminal, which is characterized in that it comprises a handle, an upper cover and a base that are snapped into one body, a conductive plate and an elastic reed arranged in the inner cavity of the terminal, and the handle is hinged to the upper cover The upper cover is provided with a wire inlet hole and a wire outlet hole, the elastic reed has a positioning plate and a pressure reed extending obliquely upward from the edge of the positioning plate, and the pressure reed has a position close to the top end. A stamped and formed contact leaf, the two sides of the contact leaf are formed with pressure plates, the handle has a push plate and a pressure plate extending obliquely downward from the front and back sides of one end of the push plate, the The pressing plate abuts against the pressing piece, and the contact spring abuts against the conductive plate.
The quick-connect screw-free terminal according to claim 1, characterized in that: the upper cover has a downwardly extending card board, the card board has a wedge-shaped clamping part, and the front and back of the base A clamping hole is formed on the side wall at a position corresponding to the wedge-shaped clamping portion, and the upper cover and the base are connected by the clamping connection of the wedge-shaped clamping portion and the clamping hole to form an integrated structure.
A quick-connect screw-free terminal according to claim 1 or 2, characterized in that: a cylindrical flange is formed on the outer surface of the pressure plate, and a longitudinal opening is opened on the upper end surface of the upper cover, and the The front and rear side walls of the longitudinal opening form a longitudinal adapting groove, and the handle forms a hinge connection with the upper cover through the adaptation of the cylindrical flange and the longitudinal adapting groove.
The quick-connect screw-free terminal according to claim 1 or 2, characterized in that: the position on the lateral sides of the positioning plate on the base has a limit beam for restricting the lateral deviation of the elastic reed A concave positioning groove is formed near the middle of the front and rear sides of the positioning plate, and a position corresponding to the positioning groove on the base forms a longitudinal limit plate adapted to the positioning groove.
The quick-connect screw-free terminal according to claim 3, characterized in that: the position of the base on the lateral sides of the positioning plate is provided with a limit beam for limiting the lateral deviation of the elastic reed, so The front and rear sides of the positioning plate form a concave positioning groove near the middle position, and the position corresponding to the positioning groove on the base forms a longitudinal limit 1-position plate adapted to the positioning groove.
The quick-connect screw-free terminal according to claim 1 or 2, characterized in that: the conductive plate has a longitudinal partition plate formed by stamping in the middle position.
The quick-connect screw-free terminal according to claim 3, characterized in that the middle position of the conductive plate is provided with a stamped and formed longitudinal partition.
The quick-connect screw-free terminal according to claim 4, characterized in that the middle position of the conductive plate has a longitudinal partition plate formed by stamping.
The quick-connect screw-free terminal according to claim 5, characterized in that the middle position of the conductive plate is provided with a stamped and formed longitudinal partition.
The quick-connect screw-free terminal according to claim 9, characterized in that: a position on the handle near the pressure plate has a longitudinal limit beam extending longitudinally downward from the push plate, and A position close to the longitudinal limit beam on the conductive plate is provided with a longitudinal limit wall extending perpendicular to the conductive plate, and the longitudinal limit wall and the longitudinal limit beam form an adjacent connection.