Wiring terminal

Abstract

The utility model discloses a wiring terminal which comprises a shell and an elastic sheet in a cavity of the shell, when the wiring terminal is used, an operating piece (such as a screwdriver, an ejector rod and the like) is generally used for applying force to downwards press the end part of a clamping part, in the scheme, a bulge part and a baffle plate are matched to limit the movement range of a tool bit of the screwdriver, for example, the tool bit of the screwdriver slides back and forth to correspondingly abut against the baffle plate and the bulge part, so that the clamping part can clamp the end part of the clamping part; the movement of the tool bit is limited by the baffle and the protruding part, the limiting area for limiting the movement range of the tool bit of the screwdriver is formed between the baffle and the protruding part, the screwdriver is more stable when applying force to press the elastic piece clamping part, and the slipping phenomenon is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to wiring device technical field, concretely relates to a wiring terminal. BACKGROUND

[0002] The wiring terminal is a common device in the electrical field, such as the patent document disclosed in the authorized announcement No. CN108028473B, a wiring terminal contact element, including the shell and the clamping spring (or called the spring piece) in the cavity, the clamping part in the clamping spring cooperates with the cavity wall to clamp the inserted wire, generally needs to press the clamping part in the clamping spring to make it move down by screwdriver and the like operating element, then the wire is pulled out or inserted, but the configuration design of the clamping part cooperating with the screwdriver is unreasonable, and the phenomenon of slipping off easily occurs, and needs to be improved. SUMMARY

[0003] To solve the above at least one technical defect, the utility model provides the following technical scheme:

[0004] The utility model discloses a wiring terminal, including shell and the spring piece in its cavity, the spring piece includes the abutting portion, the clamping part and the curved portion of connecting both, the end of the shell is provided with the insertion hole communicating with its chamber, the insertion hole is used for the wire insertion, the clamping part in the spring piece blocks the insertion hole in the initial state, and the clamping part moves down to unblock the insertion hole, and the end of the clamping part is exposed from the opening of the shell, and its characterized in that the convex portion protrudes upward is provided at the top surface of the end of the clamping part exposed from the opening, the baffle is provided at the opening in front of the convex portion, the baffle is at least partially in the cavity of the insertion hole to limit the insertion depth of the wire, and the space between the baffle and the convex portion forms the limiting area for limiting the activity range of the operating element pressing the clamping part.

[0005] When using, generally the end of the clamping part is pressed by the operating element (such as screwdriver, jack etc.), and in the scheme, the activity range of the screwdriver bit is limited by the cooperation of the convex portion and the baffle, such as the forward and backward sliding of the screwdriver bit corresponds to abutting the baffle and the convex portion, so that the movement of the baffle and the convex portion limits the screwdriver bit, and then the limiting area limiting the activity range of the screwdriver bit is formed between the baffle and the convex portion, so that the screwdriver is more stable when pressing the spring piece clamping part, and the phenomenon of slipping off is reduced.

[0006] Meanwhile, the baffle is at least partially in the hole cavity of the insertion hole, such as the bottom end, lower part and middle part of the baffle are in the hole cavity of the insertion hole, so as to limit the insertion depth of the wire, and the clamping part can better clamp the wire in the insertion hole.

[0007] Further, during the movement of the clamping part from the initial state to the unlocked state, the protruding part cooperates with the two side walls of the shell to form a limiting area for limiting the movement range of the operating member for pressing the clamping part. When the head of the screwdriver slides towards the protruding part, the protruding part limits the sliding of the head of the screwdriver. When the head of the screwdriver slides to the two sides, the side walls of the shell limit the sliding of the head of the screwdriver. Thus, the limiting area for limiting the movement range of the head of the screwdriver is formed.

[0008] Further, the distance between the two sides of the protruding part and the two sides of the end of the clamping part and the corresponding side walls of the shell is 0-6mm. In this scheme, the distance between the two sides of the protruding part and the corresponding side walls of the shell and the distance between the two sides of the end of the clamping part and the corresponding side walls of the shell are limited. During the pressing process, the head of the screwdriver cannot slide into the gap between the two sides of the protruding part and the corresponding side walls of the shell or the gap between the two sides of the end of the clamping part and the corresponding side walls of the shell. By limiting the distance, the protruding part, the shell side wall and the like cooperate to form a limiting area for limiting the movement range of the head of the screwdriver, further reducing the phenomenon of slipping.

[0009] Further, the top end of the corresponding shell side wall on the two sides of the protruding part is higher than the top surface of the end of the clamping part in the initial state. When the clamping part is in the initial state, the protruding part cooperates with the two side walls of the shell to form a limiting area for limiting the movement range of the operating member for pressing the clamping part. In this limiting configuration, even when the screwdriver initially abuts against the end of the clamping part, the sliding range can be limited, which is convenient for use.

[0010] Further, the distance between the two sides of the protruding part and the two sides of the end of the clamping part and the corresponding side walls of the shell is 0-3mm, which is a preferred distance suitable for common terminal connectors on the market.

[0011] Further, the hole of the insertion hole is located at the front end of the shell and the mounting opening is provided at the tail end of the shell and communicates with the cavity, the mounting opening is used for inserting the elastic sheet, and the top shell wall of the mounting opening is provided with a notch to form an opening for exposing the end of the clamping part. In this scheme, the mounting opening is directly formed, and the elastic sheet can be directly inserted from the mounting opening, which is convenient for assembly and molding. The layout of the notch formed on the top shell wall of the mounting opening helps to simplify the shell structure and facilitate molding.

[0012] Further, the bottom shell of the mounting opening is also provided with a notch, and the width of the notch is greater than the width of the elastic sheet. The elastic sheet can be inserted from the mounting opening without being pressed to a large extent, which reduces the difficulty of assembly.

[0013] Further, the bottom wall of the cavity of the shell is provided with a limiting plate, and the abutting part of the elastic sheet is provided with a groove for inserting the limiting plate. The limiting plate is inserted into the groove to cooperate with the elastic sheet to limit the disengagement from the insertion direction, thereby improving the stability of the elastic sheet.

[0014] Further, the clamping portion corresponding to the baffle is provided with an avoiding hole, the bottom end of the baffle arranged at the opening is inserted into the avoiding hole in the initial state, the avoiding hole is increased to meet the arrangement requirement of the baffle, the layout is reasonable, and the structure is simplified.

[0015] Further, the clamping portion comprises a body segment and a V-shaped segment connecting the curved portion and the body segment, the tip of the V-shaped segment faces the abutting portion, the uplink inclined segment of the V-shaped segment is located in the cavity of the insertion hole and faces the hole of the insertion hole, and the top surface of the tail end of the body segment is provided with a protruding portion, and the increase of the V-shaped segment helps to improve the deformation angle of the elastic sheet, reduces the plastic deformation caused by overpressure in the frequent pressing operation of the end of the clamping portion, and helps to prolong the service life of the elastic sheet.

[0016] For the protruding portion, it can be fixed at the tail end of the body segment after being independently formed, or the tail end of the body segment is directly bent upwards to form the protruding portion, and the selection is made according to the requirement.

[0017] Further, the hole of the insertion hole is flared, the width of the hole cavity adjacent to the hole is smaller than the width of the elastic sheet, the flared hole facilitates the insertion of the wire, and in a conventional case, the diameter of the wire is smaller than the width of the elastic sheet, the width of the hole of the insertion hole is limited in the scheme to limit the movement of the wire, and the stability of the wire and the elastic sheet in butt joint is improved.

[0018] Further, the shell is rectangular, and the top surface hole wall of the insertion hole is provided with a convex, so that the convex abuts against the clamping portion, the increase of the convex helps to improve the structural strength, and the clamping portion is supported by the convex, which helps to prolong the service life of the shell.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] 1. The utility model discloses a structure of the terminal, the protruding portion at the end of the clamping portion limits the front and back sliding range of the screwdriver bit, and the bit of the screwdriver can reduce the active release when force is applied in the limiting area, so that the use is convenient.

[0021] 2. The utility model discloses a structure of the terminal, the protruding portion and the corresponding shell side wall form the limiting area limiting the sliding range of the screwdriver bit, which helps to further reduce the phenomenon of sliding off.

[0022] 3. The utility model discloses a mounting port and an opening are formed at the end of the shell, and the elastic sheet can be directly inserted and installed without being pre-pressed to a large extent, so that the assembly is convenient.

[0023] 4. The utility model discloses a structure of the elastic sheet, which helps to improve the elastic deformation angle of the clamping portion, reduces the plastic deformation caused by overpressure even if the clamping portion is pressed frequently, and helps to prolong the service life of the elastic sheet. DRAWINGS

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the cross-sectional structure of the terminal block in Example 1;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of the terminal block in Example 1;

[0027] Figure 3 This is a schematic diagram of the structure of this terminal block in Embodiment 1;

[0028] Figure 4 This is a schematic diagram of the structure of this terminal block in Embodiment 1;

[0029] Figure 5 This is a schematic diagram of the structure of the spring in Example 1;

[0030] The attached figures are labeled as follows:

[0031] 1. Housing; 2. Spring; 3. Protrusion; 10. Mounting port; 11. Insertion hole; 12. Opening; 13. Notch; 14. Limiting plate; 15. Baffle; 16. Plate; 17. Protrusion; 21. Clamping part; 22. Abutting part; 23. Bending part; 111. Orifice; 121. Side wall; 210. Body section; 211. V-shaped section; 212. Clearance hole; 221. Groove; 2111. Upward inclined section. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figures 1-5 As shown, in this example, a terminal block includes a housing 1 and a spring contact 2 within its cavity. The housing configuration can be selected according to requirements; in this example, a common rectangular box shape is used. The housing 1 contains a cavity, and the spring contact 2 is located within the cavity. A socket 11 is formed at the first end of the housing 1, and the cavity of the socket 11 is connected to the cavity of the housing 1. The opening 111 of the socket 11 is located at the end face of the first end of the housing 1, and the wire is inserted through the opening 111 of the socket 11. Preferably, the opening 111 of the socket 11 is flared, and the width of the cavity adjacent to the opening 111 is smaller than the width of the spring contact. Figure 3 , Figure 4As shown, the plates 16 on both sides of the bendable housing can be used to form the front of the insertion hole. Then, the ends of the plates 16 are bent outward to form a flared opening. The flared opening facilitates the insertion of wires. By limiting the width of the cavity of the insertion hole, the movement of the wires can be further restricted, thereby improving the stability of the connection between the wires and the spring.

[0035] For the spring, the spring 2 is formed from a common elastic conductive metal, including a contact portion 22, a clamping portion 21, and a bent portion 23 connecting the two. The bent portion 23 is a common U-shape, and the contact portion 22 abuts against the bottom wall of the cavity of the housing 1. Figure 1 , Figure 2 In the initial state shown, the clamping part 21 of the spring piece 2 is placed in the cavity of the socket 11 to block the socket. When the wire is inserted, the clamping part needs to be bent down to make enough space for the wire to be inserted (i.e., to remove the blockage of the socket). Then the clamping part resets and cooperates with the cavity wall to clamp the wire in the middle.

[0036] The end of the clamping part 21 protrudes from the corresponding opening 12 on the housing 1. The location of the opening can be chosen according to requirements, such as at the top surface of the middle of the housing or at the top surface of the tail end of the housing. Preferably, as shown in this example, the opening 12 is located at the top surface of the tail end of the housing 1. An upwardly protruding protrusion 3 is provided on the top surface of the end of the clamping part 21 protruding from the opening 12. The protrusion 3 can be formed independently and fixed to the top surface of the end of the clamping part, or it can be integrally formed with the clamping part. The configuration of the protrusion can also be chosen according to requirements, such as... Figure 3 , Figure 4 , Figure 5 The straight extension shown can, of course, also be curved or other configurations. The purpose of the protrusion is to restrict the forward movement of the screwdriver tip when it applies force to press down on the clamping part.

[0037] In this example, a baffle 15 is formed at the opening in front of the protrusion 3. The baffle can be formed at the opening wall, and can be flat, cylindrical, triangular, or other shapes. Preferably, ... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the baffle 15 is approximately L-shaped, with its horizontal portion connected to the housing wall at the opening 12, as if integrally formed. The length of the horizontal portion can be adjusted, thereby allowing for adjustment of the vertical portion's position. This better limits the insertion depth of the wire and simplifies the housing structure. Alternatively, the baffle can be flat, with its top connected to the housing wall at the opening. The bottom of the vertical end of the baffle 15 extends into the cavity of the socket 11. As the wire moves forward in the socket, it abuts against the vertical end of the baffle, thus limiting further insertion. The clamping part can better hold the wire at the socket.

[0038] Meanwhile, the space between the longitudinal end of the baffle 15 and the protruding part 3 forms a limiting area for limiting the operating range of the operating member, such as the insertion of the head of a screwdriver into the space between the two, the forward and backward sliding of the head will correspondingly abut against the longitudinal end of the baffle 15 and the protruding part 3 to form a limit, which helps to reduce the phenomenon of slipping.

[0039] In order to facilitate the installation of the baffle and simplify the structure, a hole, i.e. an avoiding hole 212, is formed in the middle of the corresponding clamping part 21 in this example, the bottom end of the baffle 15 in the initial state extends into the avoiding hole 212, and this configuration does not affect the installation of the elastic sheet.

[0040] In order to further limit the slipping, the following further limitation can also be made: during the movement of the clamping part 21 from the initial state to the unlocked insertion hole 11, the protruding part 3 cooperates with the side walls of the shell 1 on both sides to form a limiting area for limiting the operating range of the operating member for pressing the clamping part, such as limiting the distance between the protruding part on both sides and the corresponding side wall of the shell, to avoid the sliding of the head of a screwdriver. Preferably, during the movement of the clamping part from the initial state to the unlocked insertion hole, the distance between the protruding part 3 on both sides and the end of the clamping part on both sides and the corresponding side wall of the shell is 0-6mm, preferably 0-3mm, under this limitation, the head of a screwdriver cannot slide into the gap between the protruding part on both sides and the corresponding side wall of the shell during the pressing process, or slide into the gap between the end of the clamping part on both sides and the corresponding side wall of the shell, so that the protruding part cooperates with the side walls of the shell on both sides to limit the sliding range of the head, to further reduce the phenomenon of slipping.

[0041] In addition, the height of the side wall of the shell on both sides of the opening when the clamping part is in the initial state can also be limited, such as the top end of the corresponding side wall 121 of the shell on both sides of the protruding part 3 in the initial state being higher than the top surface of the end of the clamping part 21, such as being higher than the bottom end of the protruding part 3, of course, it can also continue to extend beyond the protruding part, the distance between the end of the clamping part on both sides and the protruding part on both sides and the corresponding side wall of the shell is preferably within 0-6mm, 0-3mm, which can form a limit during the insertion of the head of a screwdriver, to facilitate use.

[0042] In order to facilitate assembly, an installation opening 10 is formed at the tail end of the shell 1 in this example, which is in communication with the cavity of the shell 1, the size of the installation opening 10 satisfies the insertion of the elastic sheet in the pre-pressed state. A notch is formed at the top shell wall of the installation opening 10, the width of the notch is greater than the width of the elastic sheet, i.e. the opening 12 for exposing the end of the clamping part, the layout of the opening directly formed at the installation opening helps to increase the size of the installation opening, and the elastic sheet can be inserted under a smaller degree of pre-pressing. Of course, a notch 13 can also be formed at the bottom shell wall of the installation opening 10, the width of the notch is greater than the width of the elastic sheet, under this configuration, the longitudinal size of the installation opening is greatly increased, and the pre-pressing of the elastic sheet can be further reduced, to facilitate the insertion of the elastic sheet from the installation opening.

[0043] In order to improve the stability of the elastic sheet, a limiting plate 14 can also be added at the bottom wall of the cavity of the shell 1, such asFigure 1 、 Figure 2 As shown in FIG. 11, a limiting plate 14 is formed by bending at the bottom wall of the cavity of the shell 1 below the insertion hole 11, the limiting plate 14 is a plate body inclined away from the mounting port 10, a groove 221 is formed at the abutting portion 22 of the elastic sheet 2 for the insertion of the limiting plate 14, after the elastic sheet is inserted into the cavity of the shell, the limiting plate 14 is inserted into the groove 221, and the outer pulling of the elastic sheet 2 is limited.

[0044] In addition, in order to further increase the deformation angle of the clamping portion in the elastic sheet, the configuration of the clamping portion is designed in this example, as shown in FIG. 12, Figure 1 、 Figure 2 、 Figure 5 The clamping portion 21 includes a body segment 210 and a V-shaped segment 211 connecting the bending portion 23 and the body segment 210, the tip of the V-shaped segment 211 is directed to the abutting portion 22, the upward inclined segment 2111 (i.e. the upward extending part) of the V-shaped segment 211 extends into the cavity of the insertion hole 11 and is directed to the orifice 111 of the insertion hole 11, and the tail end of the body segment 210 is upwardly bent to form a protruding portion 3 protruding from the top surface. The upward inclined segment 2111 locks the insertion hole 11, when the wire is inserted, the wire abuts the upward inclined segment, and after the guidance of the inclined surface, the wire can better move the clamping portion to unlock in the process of continuous insertion. And under this configuration, the deformation angle of the tail end of the body segment is increased, the overpressure phenomenon caused by the force of the screwdriver is reduced, thereby helping to improve the service life of the elastic sheet. For the body segment, its configuration can also be selected according to the needs, preferably as shown in FIG. 13, Figure 1 、 Figure 2 、 Figure 5 The body segment extends approximately in a straight line, and part of it is upwardly curved at the position of the protruding portion. The avoiding hole 212 is formed at the body segment 210.

[0045] In addition, the protruding portion 17 can also be formed on the top surface orifice wall of the insertion hole 11, the top surface of the shell 1 corresponding to the protruding portion 17 is in a groove shape, the protruding portion 17 abuts the body segment of the clamping portion in the initial state, and the increase of the protruding portion helps to improve the structural strength, reduce the damage to the shell caused by the reset of the clamping portion, and prolong the service life of the shell.

[0046] The preferred embodiments of the utility model are described above, the protection scope of the utility model is not limited to the above-mentioned embodiments only, any technical solutions belonging to the idea of the utility model shall belong to the protection scope of the utility model. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model shall also be considered as the protection scope of the utility model.

Claims

1. A terminal comprising a housing (1) and a spring (2) in the cavity of the housing (1), the spring (2) comprising an abutting portion (22), a clamping portion (21) and a bending portion (23) connecting the two, the housing (1) being provided with a hole (11) at the end thereof communicating with the cavity of the housing (1), the hole (11) being used for inserting a wire, the clamping portion (21) of the spring (2) initially locking the hole (11), the clamping portion (21) moving downward to release the locking of the hole (11), the end of the clamping portion (21) being exposed from the corresponding opening (12) of the housing (1), characterized in that, The protruding part (3) is arranged on the top surface of the end of the clamping part (21) exposed from the opening (12), and the baffle (15) is arranged at the opening in front of the protruding part (3) and at least partially in the cavity of the jack to limit the insertion depth of the wire, and the space between the baffle (15) and the protruding part (3) forms a limiting area for limiting the movement range of the operating member for pressing the clamping part.

2. A wiring terminal according to claim 1, wherein: During the movement of the clamping part (21) from the initial state to the unlocked jack (11), the protruding part (3) cooperates with the side walls of the two housings (1) to form a limiting area for limiting the movement range of the operating member for pressing the clamping part.

3. A wiring terminal according to claim 2, wherein: During the movement of the clamping part (21) from the initial state to the unlocked jack (11), the distance between the protruding part (3) and the side walls of the corresponding housings (1) on both sides of the clamping part (21) is 0-6mm.

4. A wiring terminal according to claim 3, wherein: The top ends of the side walls of the corresponding housings (1) on both sides of the protruding part (3) are higher than the top surface of the end of the clamping part (21) in the initial state, and when the clamping part (21) is in the initial state, the protruding part (3) cooperates with the side walls of the two housings (1) to form a limiting area for limiting the movement range of the operating member for pressing the clamping part. Or, the distance between the protruding part (3) and the side walls of the corresponding housings (1) on both sides of the clamping part (21) is 0-3mm.

5. A wiring terminal according to claim 1, wherein: The aperture (111) of the jack (11) is arranged at the front end of the housing (1), and the mounting opening (10) in communication with the cavity is arranged at the tail end of the housing (1), the mounting opening (10) is used for inserting the spring sheet, and the top shell wall of the mounting opening (10) is provided with a notch to form an opening (12) for exposing the end of the clamping part.

6. A wiring terminal according to claim 5, wherein: The bottom shell of the mounting opening (10) is also provided with a notch (13), and the width of the notch is greater than the width of the spring sheet.

7. A wiring terminal according to claim 1, wherein: The limiting plate (14) is arranged at the cavity bottom wall of the housing (1), the abutting part (22) of the spring sheet (2) is provided with a groove (221) for inserting the limiting plate (14), and the limiting plate (14) is inserted into the groove (221) to cooperate to limit the disengagement of the spring sheet (2) from the insertion direction.

8. A wiring terminal according to claim 1, wherein: The corresponding clamping part (21) of the baffle (15) is provided with an avoiding hole (212), and the bottom end of the baffle (15) arranged at the opening in the initial state extends into the avoiding hole (212).

9. A wiring terminal according to claim 1, wherein: The clamping part (21) comprises a body segment (210) and a V-shaped segment (211) connecting the body segment (210) and the connecting curved part (23), the tip of the V-shaped segment (211) faces the abutting part (22), the upward inclined segment (2111) of the V-shaped segment (211) is in the cavity of the jack (11) and faces the aperture (111) of the jack (11), and the top surface of the tail end of the body segment (210) is provided with the protruding part (3).

10. A wiring terminal according to claim 1, wherein: The aperture (111) of the jack (11) is flared, and the width of the hole cavity adjacent to the aperture (111) is less than the width of the spring sheet (2). Or, the shell (1) is rectangular, the top wall of the jack (11) is provided with a convex (17), and the convex (17) abuts against the clamping portion (21) in the initial state.

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