Terminal Blocks

Abstract

The present invention relates to the field of low-voltage electrical appliances, and in particular to a wiring terminal, which comprises a wiring frame, a pressing block arranged in the wiring frame and rotatably connected thereto, a spring piece rotatably arranged in the wiring frame, and a screw arranged on the wiring frame and drivingly matched with the pressing block. The wiring frame comprises a wire pressing wall arranged opposite to the pressing block, and a wire insertion gap for inserting an external wire is arranged between the wire pressing wall, the pressing block and the spring piece; the screw drives the pressing block and the spring piece to rotate, so that the pressing block and the spring piece respectively cooperate with the wire pressing wall to press the external wire; the wiring terminal of the present invention has high wiring reliability.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to a wiring terminal. Background Art

[0002] There are mainly two types of terminal blocks: threaded terminal blocks and threadless terminal blocks. The threaded terminal blocks are mostly hard-connected, while the threadless terminal blocks are elastically connected. However, when the two types of terminal blocks are used to connect large-diameter wires, the wires are often not firmly pressed or the crimping force of the wires decreases due to the large current, resulting in temperature rise or even burning. Summary of the invention

[0003] The object of the present invention is to overcome the defects of the prior art and provide a wiring terminal with high wiring reliability.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A wiring terminal comprises a wiring frame 1, a pressing block 2 arranged in the wiring frame 1 and rotatably connected thereto, a spring piece 3 rotatably arranged in the wiring frame 1, and a screw 4 arranged on the wiring frame 1 and drivingly matched with the pressing block 2. The wiring frame 1 comprises a wire pressing wall 12 arranged opposite to the pressing block 2, and a wire insertion gap 15 for inserting an external wire 5 is provided between the wire pressing wall 12 and the pressing block 2 and the spring piece 3; the screw 4 drives the pressing block 2 and the spring piece 3 to rotate, so that the pressing block 2 and the spring piece 3 respectively cooperate with the wire pressing wall 12 to press the external wire 5.

[0006] Preferably, the spring sheet 3 is arranged on the pressing block 2 and linked thereto.

[0007] Preferably, one end of the spring piece 3 is connected to the pressing block 2 , and the other end cooperates with the wire pressing wall 12 to press the external wire 5 .

[0008] Preferably, the wiring frame 1 includes a pair of limiting side walls 13 that are relatively spaced apart, and the width of the pressing block 2 matches the spacing between the two limiting side walls 13 ; one end of the spring sheet 3 is embedded in the pressing block 2 .

[0009] Preferably, the pressing block 2 includes two spring assembly grooves 25 respectively arranged on both sides thereof, the pressing block 2 is provided with spring assembly grooves 25 on both sides opposite to the limiting side walls 13, and each spring assembly groove 25 is provided with a spring assembly column 23 in the middle; the two spring sheets 3 are respectively arranged on both sides of the pressing block 2, one end of each spring sheet 3 is arranged in the spring assembly groove 25 and is sleeved on the spring assembly column 23, and the other end protrudes from the outside of the pressing block 2 and extends in the direction of the pressing line wall 12.

[0010] Preferably, the two spring pieces 3 are mirror-image structures of each other, and each spring piece 3 includes a spring piece assembly portion 32 and a spring piece wire-pressing end 31. The spring piece assembly portion 32 is a U-shaped structure, embedded in the spring piece assembly groove 25 and sleeved on the spring piece assembly column 23, and the spring piece wire-pressing end 31 is connected to one arm of the U-shaped structure of the spring piece assembly portion 32.

[0011] Preferably, the two spring sheet wire pressing ends 31 both protrude toward the middle of the pressing block 2 , and the distance between the two spring sheet wire pressing ends 31 is smaller than the distance between the two spring sheet assembly grooves 25 .

[0012] Preferably, the spring assembly groove 25 is a U-shaped groove, and two arms of the U-shaped structure of the spring assembly portion 32 are respectively limitedly matched with two side walls of the spring assembly groove 25 .

[0013] Preferably, the cross section of the spring assembly column 23 is a teardrop-shaped structure.

[0014] Preferably, the pressing block 2 includes a spring assembly groove 25 arranged at one end thereof, a spring assembly column 23 is provided in the middle of the spring assembly groove 25, one end of the spring 3 is embedded in the spring assembly groove 25 and sleeved on the spring assembly column 23, and the other end protrudes from the outside of the pressing block 2 and extends in the direction of the pressing line wall 12.

[0015] Preferably, the pressing block 2 includes a pressing side 24 and a pressing block passive side 22 driven by the screw 4, the pressing side 24 is provided with a plurality of toothed pressing ribs, and the extension direction of the toothed pressing ribs intersects with the direction in which the external wire 5 is inserted into the wiring frame 1; the pressing block passive side 22 is an arc-shaped side.

[0016] In the wiring terminal of the present invention, the pressing block 2 and the spring piece 3 respectively cooperate with the wire pressing wall 12 to press the external wire 5, which greatly improves the reliability of the wiring and the conductive performance of the wiring terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the wiring terminal of the present invention;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the wiring terminal of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the wiring frame of the present invention;

[0020] Figure 4 It is a schematic diagram of the assembly structure of the pressing block and the spring piece of the present invention;

[0021] Figure 5 It is a schematic diagram of the explosion structure of the pressing block and the shrapnel of the present invention. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-5 The embodiments given below further illustrate the specific implementation of the wiring terminal of the present invention. The wiring terminal of the present invention is not limited to the description of the following embodiments.

[0023] like Figure 1 and 2 As shown, the wiring terminal of the present invention includes a wiring frame 1, a pressing block 2 arranged in the wiring frame 1 and rotatably connected thereto, a spring piece 3 rotatably arranged in the wiring frame 1, and a screw 4 arranged on the wiring frame 1 and drivingly matched with the pressing block 2. The wiring frame 1 includes a wire pressing wall 12 arranged opposite to the pressing block 2, and a wire insertion gap 15 for inserting an external wire 5 is provided between the wire pressing wall 12 and the pressing block 2 and the spring piece 3; the screw 4 drives the pressing block 2 and the spring piece 3 to rotate, so that the pressing block 2 and the spring piece 3 respectively cooperate with the wire pressing wall 2 to press the external wire 5.

[0024] In the wiring terminal of the present invention, the pressing block 2 and the spring piece 3 respectively cooperate with the wire pressing wall 12 to press the external wire 5, which greatly improves the reliability of the wiring and the conductive performance of the wiring terminal.

[0025] Preferably, Figure 1 and 2 As shown, the spring piece 3 is arranged on the pressing block 2 and linked therewith, which is helpful to simplify the assembly operation of the terminal block of the present invention.

[0026] It should be pointed out that the spring piece 3 is not limited to being set on the pressing block 2, but can also be rotatably set on the wiring frame 1, and directly or indirectly driven to cooperate with the screw 4, so that when the screw 4 rotates, it cooperates with the wire pressing wall 12 to press the external wire 5.

[0027] The connection terminal of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] like Figure 1-5 FIG. 1 shows a first embodiment of the wiring terminal of the present invention.

[0029] like Figure 1 and 2 As shown, the wiring terminal of the present invention includes a wiring frame 1, a pressing block 2 arranged in the wiring frame 1 and rotatably connected thereto, a spring piece 3 rotatably arranged in the wiring frame 1, and a screw 4 arranged on the wiring frame 1 and drivingly cooperated with the pressing block 2. The wiring frame 1 includes a wire pressing wall 12 arranged opposite to the pressing block 2, and a wire insertion gap 15 for inserting an external wire 5 is provided between the wire pressing wall 12 and the pressing block 2 and the spring piece 3; the screw 4 rotates and drives the pressing block 2 and the spring piece 3 to rotate, so that the pressing block 2 and the spring piece 3 respectively cooperate with the wire pressing wall 12 to press the external wire 5.

[0030] Preferably, Figure 1 , 2 As shown in Figures 4 and 5, the spring sheet 3 is arranged on the pressing block 2 and linked therewith. Figure 1 , 2 As shown in FIG. 4 , one end of the spring piece 3 is connected to the pressing block 2 , and the other end cooperates with the wire pressing wall 12 to press the external wire 5 .

[0031] Specifically, Figure 1 and 2 As shown, the screw 4 rotates and moves rightward relative to the wiring frame 1, the screw 4 drives the pressing block 2 to rotate clockwise, and the pressing block 2 drives the spring 3 to rotate clockwise, so that the free ends of the pressing block 2 and the spring 3 respectively cooperate with the wire pressing wall 12 to press the external wire 5.

[0032] Preferably, Figure 1 , 3 -5, the wiring frame 1 includes a pair of limiting side walls 13 arranged relatively at intervals, and the width of the pressing block 2 matches the spacing between the two limiting side walls 13; one end of the spring sheet 3 is arranged on the pressing block 2.

[0033] Preferably, Figure 4 and 5 As shown, the pressing block 2 includes two spring assembly grooves 25 respectively arranged on both sides of one end thereof, and a spring assembly column 23 is provided in the middle of each spring assembly groove 25; the two springs 3 are respectively arranged on both sides of the pressing block 2, and one end of each spring 3 is arranged in the spring assembly groove 25 and sleeved on the spring assembly column 23, and the other end protrudes outside the pressing block 2 and extends in the direction of the wire pressing wall 12. After the pressing block 2 and the spring 3 are installed in the wiring frame 1, the spring assembly column 23 and the limiting side wall 13 jointly limit the spring 3, and the assembly is simple and reliable. Further, as Figure 4 and 5 As shown, the two spring pieces 3 are mirror images of each other, and each spring piece 3 includes a spring piece assembly portion 32 and a spring piece wire pressing end 31. The spring piece assembly portion 32 is a U-shaped structure, embedded in the spring piece assembly groove 25 and sleeved on the spring piece assembly column 23, and the spring piece wire pressing end 31 is connected to one arm of the U-shaped structure of the spring piece assembly portion 32.

[0034] Preferably, Figure 4 and 5 As shown, the two spring clip wire pressing ends 31 both protrude toward the middle of the pressing block 2, and the distance between the two spring clip wire pressing ends 31 is smaller than the distance between the two spring clip assembly grooves 25. Figure 4 As shown, the two spring-piece wire-pressing ends 31 abut against each other at one side of the middle of the pressing block 2 .

[0035] Preferably, Figure 2 and 4 As shown, the spring assembly groove 25 is a U-shaped groove, and the two arms of the U-shaped structure of the spring assembly portion 32 are respectively limited and matched with the two side walls of the spring assembly groove 25, thereby ensuring the reliability of the connection between the spring 3 and the pressing block 2. Figure 2 ,4 As shown in FIG. 5 , the cross-section of the spring assembly column 23 is a teardrop shape, which further improves the reliability of the assembly of the spring 3 and the pressure block 2, cooperates with the spring assembly groove 25 to limit the swing amplitude of the spring 3 relative to the pressure block 2, and ensures reliable contact between the spring 3 and the external wire 5.

[0036] Preferably, Figure 2 and 4 As shown, the pressing block 2 includes a pressing side surface 24 and a pressing block passive side surface 22 driven by the screw 4. The pressing side surface 24 is provided with a plurality of toothed pressing ribs, and the extension direction of the toothed pressing ribs intersects with the direction in which the external wire 5 is inserted into the wiring frame 1; the pressing block passive side surface 22 is an arc-shaped side surface.

[0037] like Figure 2 , 4 5 is an embodiment of the pressing block 2: the pressing block 2 is a triangular prism structure as a whole, with a spring assembly groove 25 at each end, and a spring assembly column 23 at the middle of each spring assembly groove 25. A pressing block rotating shaft 21 is provided at each end of a side edge of the triangular prism structure of the pressing block 2, and two side surfaces connected to the side edge are the pressing block driven side surface 22 and the pressing line side surface 24. Further, as Figure 2 , 4 As shown in FIG. 5 , the movable side surface 22 of the pressing block is an arc-shaped side surface, and the pressing side surface 24 is provided with a plurality of tooth-shaped pressing ribs.

[0038] like Figure 1 and 3 As shown, an embodiment of the wiring frame 1 is shown: the wiring frame 1 includes a wire pressing wall 12, a pair of limiting side walls 13 relatively spaced apart and a screw mounting wall 11, the screw mounting arm 11 is provided with a screw hole 110 threadedly connected to the screw 4, the two ends of the wire pressing wall 12 are respectively connected to one end of the two limiting side walls 13 by bending, the wire pressing wall 2 and the two limiting side walls 13 are U-shaped as a whole, the screw mounting wall 11 is respectively connected to the other end of the two limiting side walls 13 by bending, the wire pressing wall 2 and the screw mounting wall 11 are perpendicular, and a pressing block shaft groove 14 is respectively provided in the middle of the two limiting side walls 13, which are respectively rotatably matched with the two pressing block rotating shafts 21.

[0039] like Figure 5 As shown in FIG. 1 , an embodiment of the spring sheet 3 is shown: the spring sheet 3 comprises a spring sheet assembly portion 32 of a U-shaped structure and a spring sheet pressing end 31, the spring sheet assembly portion 32 comprises a pair of side arms arranged relatively spaced apart, namely a first side arm and a second side arm, the spring sheet pressing end 31 is connected to the first side arm by bending, the second side arm is located on one side of the first side arm, and the spring sheet pressing end 31 is bent toward the other side of the first side arm. Figure 5 As shown, the spring sheet wire pressing end 31 protrudes toward one side of the spring sheet 3 , so that the width of the spring sheet wire pressing end 31 is greater than the width of the spring sheet assembly portion 32 .

[0040] The following is a second embodiment of the terminal block of the present invention: The difference between the terminal block of the second embodiment and the first embodiment is that the pressing block 2 includes a spring assembly groove 25 arranged at one end thereof, and a spring assembly column 23 is provided in the middle of the spring assembly groove 25. One end of the spring 3 is embedded in the spring assembly groove 25 and sleeved on the spring assembly column 23, and the other end protrudes from the outside of the pressing block 2 and extends in the direction of the wire pressing wall 12.

[0041] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A terminal block, characterized in that: The invention comprises a wiring frame (1), a pressing block (2) arranged in the wiring frame (1) and rotatably connected thereto, a spring sheet (3) rotatably arranged in the wiring frame (1), and a screw (4) arranged on the wiring frame (1) and drivingly matched with the pressing block (2); the wiring frame (1) comprises a wire pressing wall (12) arranged opposite to the pressing block (2); a wire insertion gap (15) for inserting an external wire (5) is provided between the wire pressing wall (12), the pressing block (2) and the spring sheet (3); the screw (4) drives the pressing block (2) and the spring sheet (3) to rotate, so that the pressing block (2) and the spring sheet (3) respectively cooperate with the wire pressing wall (12) to press the external wire (5); one end of the spring sheet (3) is connected to the pressing block (2), and the other end extends in the direction of the wire pressing wall (12) and cooperates with the wire pressing wall (12) to press the external wire (5).

2. The terminal block according to claim 1, characterized in that: The wiring frame (1) comprises a pair of limiting side walls (13) arranged at a relative interval, the width of the pressing block (2) matches the spacing between the two limiting side walls (13); one end of the spring sheet (3) is embedded in the pressing block (2).

3. The terminal block according to claim 2, characterized in that: The pressing block (2) comprises two spring piece assembly grooves (25) respectively arranged on two sides thereof. The pressing block (2) is provided with two sides of the spring piece assembly groove (25) opposite to the limiting side wall (13), and a spring piece assembly column (23) is provided in the middle of each spring piece assembly groove (25); the two spring pieces (3) are respectively arranged on two sides of the pressing block (2), one end of each spring piece (3) is arranged in the spring piece assembly groove (25) and sleeved on the spring piece assembly column (23), and the other end protrudes outside the pressing block (2) and extends in the direction of the pressing line wall (12).

4. The connection terminal according to claim 3, characterized in that: The two spring pieces (3) are mirror images of each other. Each spring piece (3) comprises a spring piece assembly portion (32) and a spring piece pressing end (31). The spring piece assembly portion (32) is a U-shaped structure, embedded in the spring piece assembly groove (25) and sleeved on the spring piece assembly column (23). The spring piece pressing end (31) is connected to one arm of the U-shaped structure of the spring piece assembly portion (32).

5. The connection terminal according to claim 4, characterized in that: The two spring sheet wire pressing ends (31) both protrude toward the middle of the pressing block (2), and the distance between the two spring sheet wire pressing ends (31) is smaller than the distance between the two spring sheet assembly grooves (25).

6. The connection terminal according to claim 4, characterized in that: The spring piece assembly groove (25) is a U-shaped groove, and the two arms of the U-shaped structure of the spring piece assembly portion (32) are respectively limitedly matched with the two side walls of the spring piece assembly groove (25).

7. The connecting terminal according to claim 4 or 5, characterized in that: The cross section of the spring assembly column (23) is a water drop-shaped structure.

8. The connection terminal according to claim 2, characterized in that: The pressing block (2) comprises a spring assembly groove (25) arranged at one end thereof, a spring assembly column (23) is arranged in the middle of the spring assembly groove (25), one end of the spring (3) is embedded in the spring assembly groove (25) and sleeved on the spring assembly column (23), and the other end protrudes outside the pressing block (2) and extends in the direction of the pressing wire wall (12).

9. The connection terminal according to claim 1, characterized in that: The pressing block (2) comprises a pressing side surface (24) and a pressing block passive side surface (22) drivingly matched with a screw (4); the pressing side surface (24) is provided with a plurality of tooth-shaped pressing ribs, the extension direction of the tooth-shaped pressing ribs intersecting with the direction in which the external wire (5) is inserted into the wiring frame (1); the pressing block passive side surface (22) is an arc-shaped side surface.

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