Splicing type line bank

Abstract

The utility model discloses a splicing type line bank which comprises a plurality of line bank single bodies which are detachably matched, each line bank single body comprises an insulating seat, a wiring frame and a line pressing plate, the insulating seat is provided with a pair of wiring cavities, the wiring frames are arranged in the wiring cavities, the wiring cavities are provided with line inserting holes for wire ends to extend into the wiring frames, and the line pressing plates are arranged in the wiring cavities. The middle part of the wire pressing plate is fixed on the insulating seat through a first screw, two ends of the wire pressing plate respectively extend into the two wiring frames, second screws which are matched with the wire pressing plate to press wire heads on the wiring frames are screwed on the two wiring frames, and the insulating seat is provided with an operation port for exposing the heads of the second screws. According to the utility model, the wire pressing plate is fixed on the insulating seat through the first screws, so that the condition that the wire pressing plate slides and displaces due to shaking of the connector bar or misoperation is avoided, the wire pressing plate is prevented from deviating from the first screws, the position of the wire pressing plate does not need to be adjusted repeatedly, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, specifically to a splicing terminal block. Background Technology

[0002] Terminal blocks are electrical components used to connect wires in electrical equipment. They are typically installed in distribution boxes, and two wires are connected by pressing the wire ends into the terminal holes. Chinese invention patent application CN108879123A discloses a novel terminal block, which includes a base, a wiring frame, a connecting plate, and screws. While this allows for quick wire connection, the connecting plate is only inserted into a through hole, making it prone to slippage during use. This can cause the connecting plate to fall out or shift, requiring inspection and adjustment before each use, which is inconvenient. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a splicing terminal block, which can improve the stability of the terminal block wiring and ensure that the terminal block can be used normally for a long time.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A modular terminal block includes several detachable terminal block units. Each terminal block unit includes an insulating base, a wiring frame, and a pressure plate. The insulating base has a pair of wiring cavities, each containing a wiring frame. Each wiring cavity has a insertion hole for a wire end to extend into the wiring frame. The center of the pressure plate is fixed to the insulating base by a first screw, and both ends of the pressure plate extend into the two wiring frames. Each wiring frame is screwed with a second screw that engages with the pressure plate to press the wire end against the wiring frame. The insulating base has an operating port for the head of the second screw to protrude. The operating port is located on the side wall of the insulating base and directly opposite the head of the second screw. By using the first screw to fix the pressure plate to the insulating base, the pressure plate is prevented from sliding or shifting due to terminal block vibration or operational errors, preventing the pressure plate from deviating from the first screw and eliminating the need for repeated adjustments to the pressure plate's position, thus improving ease of use.

[0006] As a preferred embodiment, the width of the operating port is smaller than the internal width of the wiring cavity. The insulating base is provided with a positioning cylinder at the operating port that mates with the head of the second screw. The positioning cylinder extends outwards, and its axis coincides with the axis of the second screw. By making the width of the operating port smaller than the internal width of the wiring cavity, the wiring frame is prevented from falling out of the operating port during installation, thus improving assembly efficiency. The positioning cylinder also prevents the second screw from falling out after being fully unscrewed from the wiring frame, and guides the operation of the second screw, ensuring it is accurately screwed into the screw hole of the wiring frame.

[0007] As a preferred embodiment, the positioning cylinder and the insulating seat are integrally formed, and the head of the second screw is located inside the positioning cylinder.

[0008] As a preferred embodiment, the opening of the insertion hole is provided with a guide slope to facilitate the insertion of the wire end. The guide slope is inclined from the outside to the inside towards the axis of the insertion hole, and the angle between the guide slope and the insertion direction of the wire end is 30°-45°. By providing the guide slope, the wire end to be connected can be quickly inserted into the junction box.

[0009] As a preferred embodiment, the insulating base is provided with a mounting cavity communicating with two wiring cavities, the wire clamp is inserted into the insulating base through the opening of the mounting cavity, and a cover plate is provided at the opening of the mounting cavity.

[0010] As a preferred embodiment, the mounting cavity is provided with a screw hole corresponding to the first screw. During assembly, the first screw passes through the pressure plate and is screwed into the screw hole.

[0011] As a preferred embodiment, the axis of the screw hole is parallel to the axis of the second screw.

[0012] As a preferred embodiment, the opening of the mounting cavity is provided with a positioning groove that matches the cover plate, and the cover plate is embedded in the positioning groove during assembly.

[0013] As a preferred embodiment, the cover plate is provided with a protruding plate, and a locking block is protruding from the outer side of the protruding plate. The side wall of the mounting cavity is provided with a limiting groove corresponding to the protruding plate, and a locking groove corresponding to the locking block is provided in the limiting groove. During assembly, the protruding plate is embedded in the limiting groove, and the locking block is engaged with the locking groove.

[0014] As a preferred option, two adjacent terminal blocks can be detachably connected by the cooperation of dovetail grooves and dovetail blocks.

[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, by using the first screw to fix the pressure plate on the insulating base, the pressure plate is prevented from sliding and shifting due to the vibration of the terminal block or operational errors. This prevents the pressure plate from deviating from the first screw, eliminates the need to repeatedly adjust the position of the pressure plate, and improves the convenience of use.

[0016] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0017] Figure 1 This is an overall exploded structural diagram of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded structural diagram of a terminal block according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the insulating base according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of a single terminal block according to an embodiment of this utility model.

[0021] Explanation of reference numerals in the attached diagram:

[0022] 100. Terminal block unit; 101. Dovetail groove; 102. Dovetail block

[0023] 10. Insulating base; 11. Wiring cavity; 12. Socket hole

[0024] 121. Guide slope; 13. Positioning cylinder; 14. Mounting cavity

[0025] 15. Screw hole; 16. Positioning groove; 17. Limiting groove

[0026] 18. Card slot; 20. Wiring frame; 30. Wire clamp plate

[0027] 40, First screw 50, Second screw 60, Cover plate

[0028] 61. Convex plate 62. Card block. Detailed Implementation

[0029] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] like Figure 1-4As shown, this utility model discloses a splicing terminal block, comprising several detachably connected terminal block units 100. Two adjacent terminal block units 100 are detachably connected by a dovetail groove 101 and a dovetail block 102. Each terminal block unit 100 includes an insulating base 10, a terminal frame 20, and a pressure plate 30. The insulating base 10 has a pair of terminal cavities 11, each of which has a terminal frame 20. Each terminal cavity 11 has a insertion hole 12 for inserting wire ends into the terminal frame 20. The middle part of the pressure plate 30 is fixed to the insulating base 10 by a first screw 40, and both ends of the pressure plate 30 extend into the two terminal frames 20 respectively. Each of the two terminal frames 20 is screwed with a second screw 50 that cooperates with the pressure plate 30 to press the wire end onto the terminal frame 20. The insulating base 10 has an operating port for the head of the second screw 50 to protrude. The operating port is located on the side wall of the insulating base 10 and is directly opposite the head of the second screw 50. In this embodiment, among two adjacent terminal block units 100, one terminal block unit 100 has a dovetail groove 101 on its mating surface, and the other terminal block unit 100 has a dovetail block 102 on its mating surface. The extension directions of both the dovetail groove 101 and the dovetail block 102 are parallel to the axial direction of the second screw 50. The mating surfaces of the two terminal block units 100 also have opposing arc-shaped grooves. After splicing, a fixing hole is formed in the arc-shaped groove. After splicing, the terminal blocks are installed in the distribution box by screws passing through the fixing hole. It should be understood that in actual use, the mating surfaces of the two terminal block units 100 can also be provided with both the dovetail groove 101 and the dovetail block 102; and the splicing of two adjacent terminal block units 100 can also be achieved when the extension directions of the dovetail groove 101 and the dovetail block 102 are not parallel to the axial direction of the second screw 50. It should be noted that the two adjacent terminal block units 100 can also be detachably connected by a snap-fit, magnetic, or other structure.

[0032] In this invention, the width of the operating opening is smaller than the internal width of the wiring cavity 11. The insulating base 10 is surrounded at the operating opening by a positioning cylinder 13 adapted to the head of the second screw 50. The positioning cylinder 13 extends outward, and its axis coincides with the axis of the second screw 50. The positioning cylinder 13 is integrally formed with the insulating base 10, and the head of the second screw 50 is located inside the positioning cylinder 13. By making the width of the operating opening smaller than the internal width of the wiring cavity 11, the wiring frame 20 is prevented from falling out of the operating opening during installation, thus improving assembly efficiency. By providing the positioning cylinder 13, the gap between the inner wall of the positioning cylinder 13 and the head of the second screw 50 is small, preventing the second screw 50 from easily falling out after being fully unscrewed from the wiring frame 20. This also guides the operation of the second screw 50, ensuring it can be accurately screwed into the screw hole of the wiring frame 20.

[0033] Specifically, the opening of the insertion hole 12 is provided with a guide slope 121 to facilitate the insertion of the wire end. The guide slope 121 is inclined from the outside to the inside towards the axis of the insertion hole 12, and the angle between the guide slope and the insertion direction of the wire end is 30°-45°. By setting the guide slope 121, the wire end to be connected can be quickly inserted into the wiring frame 20.

[0034] In this utility model, the insulating base 10 is provided with an installation cavity 14 that communicates with two wiring cavities 11. The installation cavity 14 is provided with a screw hole 15 corresponding to the first screw 40. The axis of the screw hole 15 is parallel to the axis of the second screw 50. During assembly, the pressure plate 30 is inserted into the insulating base 10 through the opening of the installation cavity 14. The first screw 40 passes through the pressure plate 30 and is screwed into the screw hole. The opening of the installation cavity 14 is provided with a cover plate 60. During assembly, the two wiring frames 20 are first inserted into their respective wiring cavities 11 through the openings of the mounting cavity 14. Then, the pressure plate 30 is inserted into the mounting cavity 14 through one of the insertion holes 12, with the through hole on the pressure plate 30 aligned with the screw hole 15. The first screw 40 is then screwed through the through hole and into the screw hole 15, thus fixing the pressure plate 30 in the mounting cavity 14. Finally, the cover plate 60 is placed on top. During wiring, the wire end is inserted into the wiring frame 20 through the insertion hole 12. Then, a screwdriver is inserted into the positioning cylinder 13 and the second screw 50 is rotated. The tail end of the second screw 50 presses against the pressure plate 30, causing the pressure plate 30 to press against the wire end, thereby achieving electrical connection of the wire ends in the two wiring frames 20 through the pressure plate 30.

[0035] Specifically, the opening of the mounting cavity 14 is provided with a positioning groove 16 that is adapted to the cover plate 60. The cover plate 60 is provided with a protruding plate 61. A locking block 62 protrudes from the outer side of the protruding plate 61. The side wall of the mounting cavity 14 is provided with a limiting groove 17 corresponding to the protruding plate 61. The limiting groove 17 is provided with a locking groove 18 corresponding to the locking block 62. During assembly, the cover plate 60 is embedded in the positioning groove 16, the protruding plate 61 is embedded in the limiting groove 17, and the locking block 62 is engaged with the locking groove 18.

[0036] In summary, this utility model uses a first screw to fix the pressure plate to the insulating base, thereby avoiding the situation where the pressure plate slides and shifts due to the vibration of the terminal block or operational errors, preventing the pressure plate from deviating from the first screw, eliminating the need to repeatedly adjust the position of the pressure plate, and improving the convenience of use.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the actual technical aspects of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A modular terminal block, comprising a plurality of detachable terminal block units, each terminal block unit including an insulating base, a terminal frame, and a pressure plate, characterized in that, The insulating base has a pair of wiring cavities, each of which has a wiring frame. Each wiring cavity has a insertion hole for the wire end to extend into the wiring frame. The middle part of the pressure plate is fixed to the insulating base by a first screw, and the two ends of the pressure plate extend into the two wiring frames respectively. Each of the two wiring frames is screwed with a second screw that cooperates with the pressure plate to press the wire end onto the wiring frame. The insulating base has an operating port for the head of the second screw to protrude. The operating port is located on the side wall of the insulating base and is directly opposite the head of the second screw.

2. The splicing terminal block according to claim 1, characterized in that, The width of the operating port is smaller than the internal width of the wiring cavity. The insulating seat is provided with a positioning cylinder at the operating port that is adapted to the head of the second screw. The positioning cylinder extends outward and the axis of the positioning cylinder coincides with the axis of the second screw.

3. A splicing terminal block according to claim 2, characterized in that, The positioning cylinder and the insulating base are integrally formed, and the head of the second screw is located inside the positioning cylinder.

4. The splicing terminal block according to claim 1, characterized in that, The opening of the insertion hole is provided with a guide slope to facilitate the insertion of the wire end. The guide slope is inclined from the outside to the inside towards the axis of the insertion hole, and the angle between the guide slope and the insertion direction of the wire end is 30°-45°.

5. A splicing terminal block according to claim 1, characterized in that, The insulating base is provided with an installation cavity that communicates with two wiring cavities. The pressure plate is inserted into the insulating base through the opening of the installation cavity, and a cover plate is provided at the opening of the installation cavity.

6. A splicing terminal block according to claim 5, characterized in that, The mounting cavity is provided with a screw hole corresponding to the first screw. During assembly, the first screw passes through the pressure plate and is screwed into the screw hole.

7. A splicing terminal block according to claim 6, characterized in that, The axis of the screw hole is parallel to the axis of the second screw.

8. A splicing terminal block according to claim 5, characterized in that, The opening of the mounting cavity is provided with a positioning groove that matches the cover plate. During assembly, the cover plate is embedded in the positioning groove.

9. A splicing terminal block according to claim 8, characterized in that, The cover plate is provided with a protruding plate, and a locking block is protruding from the outer side of the protruding plate. The side wall of the mounting cavity is provided with a limiting groove corresponding to the protruding plate, and a locking groove corresponding to the locking block is provided in the limiting groove. During assembly, the protruding plate is embedded in the limiting groove, and the locking block is engaged with the locking groove.

10. A splicing terminal block according to any one of claims 1-9, characterized in that, Two adjacent terminal blocks can be detachably connected by the cooperation of dovetail grooves and dovetail blocks.

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