Universal change-over switch

Abstract

The utility model relates to a universal change-over switch, which is formed by mutually overlapping a plurality of contact assemblies, a shell of each contact assembly is provided with a left group of wiring hole units and a right group of wiring hole units, each group of wiring hole units comprises two rows of wiring hole sites which are arranged up and down, and each row of wiring hole sites comprises wire connecting holes and wire removing holes which are arranged left and right. The two wire connecting holes of the two rows of wiring hole sites arranged up and down in each group of wiring hole units are communicated through an avoiding groove I; a mounting seat is arranged in the shell, two wiring chambers which are arranged left and right are arranged on each of the upper surface and the lower surface of the mounting seat, each wiring chamber is provided with an elastic sheet and directly faces a row of wiring hole sites, and the two corresponding wiring chambers between the upper surface and the lower surface are communicated through an avoiding groove II; the second receding groove is located below the first receding groove and communicates with the first receding groove. According to the universal change-over switch, the U-shaped terminal can be conveniently inserted downwards, and the wire connection effect is ensured.

Description

Technical Field

[0001] The utility model relates to a universal conversion switch with a quick-insertion function, in particular to a universal conversion switch which is convenient for quick insertion of a U-shaped terminal. Background Art

[0002] The universal conversion switch is a switch component that can be used in combination of multi-layer contact assemblies by stacking and cascading according to actual user needs, such as the Chinese invention patent CN100435257C "universal conversion switch" applied by our company. However, its wiring uses screws to connect, which has the defects of low wiring efficiency and inconvenient operation in narrow spaces; for this reason, an enterprise has developed and applied for the Chinese patent CN2906956Y "a universal conversion switch with spring wiring", which uses a V-shaped spring to achieve rapid clamping and connection of the wire. Then, in actual application, it is found that the wire connection holes are distributed on the four corners of the contact assembly. Therefore, when it is necessary to use a U-shaped terminal to connect two springs at the same time for combined application, only two wires can be plugged in separately and then merged together, which is not convenient enough in this application scenario; at the same time, its conventional hole design is not conducive to the connection effect of the pin-type terminal. Summary of the invention

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a universal conversion switch, which not only changes the distribution position of the wire connection holes, but also sets an avoidance groove between the two wire connection holes, so as to facilitate the downward insertion of the U-shaped terminal, ensure the connection between the two pins of the U-shaped terminal and the spring, thereby ensuring the conductive effect.

[0004] The purpose of the utility model is achieved in this way:

[0005] A universal conversion switch is formed by overlapping a plurality of contact assemblies, wherein a housing of the contact assembly is provided with left and right groups of wiring hole units, each group of wiring hole units includes two rows of wiring hole positions arranged up and down, each row of wiring hole positions includes wire connection holes and wire removal holes arranged up and down, and the two wire connection holes of the two rows of wiring hole positions arranged up and down in each group of wiring hole units are connected through a first avoidance groove; a mounting seat is provided in the housing, and the upper and lower surfaces of the mounting seat are provided with two wiring chambers arranged up and down, each wiring chamber is provided with a spring sheet, and each wiring chamber is opposite to a row of wiring hole positions, and the two corresponding wiring chambers between the upper and lower surfaces are connected through a second avoidance groove, and the second avoidance groove is located below the first avoidance groove and is connected to each other.

[0006] Preferably, a countersunk groove is provided between two upper and lower wire connection holes of each group of wiring hole units.

[0007] Preferably, the wire connection holes are all step holes, and the step surfaces of the step holes are all tapered surfaces.

[0008] Preferably, the spring piece is a V-shaped structure consisting of a fixed section and a connecting section, the fixed section is fitted on the inner wall of the wiring chamber, and the connecting section is obliquely overlapped on the inner wall on the other side of the wiring chamber; and the end of the connecting section faces the wire connection hole, and the wire removal hole faces the middle of the connecting section.

[0009] Preferably, a limiting protrusion is provided on the inner wall of the wiring chamber, and the end of the connecting section is overlapped on the limiting protrusion.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model retains the ability to quickly connect a single wire under the conventional spring-type connection method in the background technology, and by changing the position of the wire connection hole, it is convenient for the two pins of the same U-shaped terminal to be inserted into the springs in the two wire connection holes at the same time, thereby realizing a quick connection when used in parallel; and the design of the avoidance groove between the two wire connection holes in this patent ensures the insertion depth of the U-shaped terminal and the reliability of the electrical connection between the U-shaped terminal and the spring. At the same time, the wire connection hole adopts a step hole design with an inclined step surface, which will enable the pin-type terminal to be conveniently inserted deeply and maintain close contact with the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a structural schematic diagram of a universal conversion switch.

[0013] Figure 2 It is a partial cross-sectional view of the contact assembly of the utility model.

[0014] Figure 3 It is a partial cross-sectional view of the contact assembly of the utility model after removing the housing.

[0015] Figure 4 It is a side view of the contact assembly of the present utility model.

[0016] Figure 5 It is a structural schematic diagram of the spring piece of the utility model.

[0017] Figure 6 It is a schematic diagram of the structure of the U-shaped terminal of the utility model when it is inserted.

[0018] Figure 7 It is a schematic diagram of the structure of the pin terminal of the utility model when it is inserted.

[0019] in:

[0020] Contact assembly 101, gland plate 102;

[0021] U-shaped terminal 201, pin-shaped terminal 202;

[0022] Shell 1, mounting seat 2, spring piece 3;

[0023] Wire connection hole 1.1, wire removal hole 1.2, avoidance groove 1.3, countersunk hole groove 1.4.

[0024] Wiring chamber 2.1, limiting protrusion 2.2, avoidance groove 2 2.3, mounting column 2.4;

[0025] Fixed section 3.1, connecting section 3.2. DETAILED DESCRIPTION

[0026] See also Figures 1 to 7 The utility model relates to a universal conversion switch, which is composed of a plurality of contact assemblies 101 stacked on each other, and a pressure cover plate 102 is pressed on both the contact assembly 101 located on the top layer and the contact assembly 101 located on the bottom layer.

[0027] The contact assembly 101 includes a shell 1, on which two groups of wiring hole units are arranged on the left and right sides, each group of wiring hole units includes two rows of wiring hole positions arranged up and down, each row of wiring hole positions includes wire connection holes 1.1 and wire removal holes 1.2 arranged on the left and right sides, and a countersunk hole groove 1.4 is arranged between the two wire connection holes 1.1 arranged up and down in each group of wiring hole units, thereby forming a staggered structure design, which is convenient for inserting the U-shaped terminal 201, and at the same time, the two wire connection holes 1.1 arranged up and down in each group of wiring hole units are connected to each other through an avoidance groove 1.3, and the avoidance groove 1.3 is located at the bottom of the countersunk hole groove 1.4.

[0028] A mounting base 2 is provided in the shell 1, and two wiring chambers 2.1 arranged left and right are provided on the upper and lower surfaces of the mounting base 2, and each wiring chamber 2.1 is opposite to a row of wiring holes, and the two corresponding wiring chambers 2.1 between the upper and lower surfaces are connected through an avoidance groove 2.3, and the avoidance groove 2.3 is located below the avoidance groove 1.3 and is connected to each other.

[0029] Each wiring chamber 2.1 is equipped with a spring piece 3, and a mounting column 2.4 is vertically arranged in the wiring chamber 2.1. The spring piece 3 is a V-shaped structure composed of a fixed section 3.1 and a connecting section 3.2, and the fixed section 3.1 and the connecting section 3.2 are connected by a circular arc transition section. The middle circular arc transition section of the spring piece 3 of the V-shaped structure is sleeved on the mounting column 2.4, and the fixed section 3.1 passes through the slit between the mounting column 2.4 and the side wall of the wiring chamber 2.1 and rests on the inner wall of the wiring chamber 2.1, and the connecting section 3.2 is obliquely overlapped on the inner wall of the other side of the wiring chamber 2.1, and a limiting protrusion 2.2 is arranged on the inner wall of the wiring chamber 2.1 to limit the end of the connecting section 3.2. At this time, the end of the connecting section 3.2 faces the wire connection hole 1.1, and the wire removal hole 1.2 faces the middle of the connecting section 3.2. Therefore, the wire can be inserted through the wire connection hole 1.1, and the wire can be easily inserted between the connection section 3.2 of the spring 3 and the inner wall of the wiring chamber 2.1, and due to the oblique setting of the connection section 3.2, the guide cannot be pulled out in the reverse direction. When the wire needs to be pulled out later, a screwdriver can be inserted from the wire removal hole 1.2, so that the screwdriver contacts the middle of the connection section 3.2, so that the connection section 3.2 is rotated and pressed down around the installation column 2.4 as the center, so that the connection section 3.2 is released from the clamping of the wire, and the wire can be easily pulled out.

[0030] like Figure 6 As described above, when the U-shaped terminal 201 is inserted, the wire terminal part connected to the U-shaped terminal 201 can be conveniently inserted into the countersunk groove 1.4; at the same time, with the insertion of the U-shaped terminal 201, through the design of the avoidance groove 1.3 and the avoidance groove 2.3, the two pins of the U-shaped terminal 201 can be conveniently inserted deeply downward, thereby achieving benign contact with the two spring pieces 3.

[0031] See also Figure 7 The wire connection hole 1.1 is a stepped hole, and the stepped surfaces of the stepped hole are all conical surfaces, so that the needle terminal 202 can be inserted more smoothly and the combination with the spring 3 is more reliable.

[0032] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A universal transfer switch, comprising a plurality of contact assemblies (101) stacked on top of each other, characterized in that: The housing (1) of the contact assembly (101) is provided with two groups of wiring hole units on the left and right, each group of wiring hole units comprises two rows of wiring hole positions arranged vertically, each row of wiring hole positions comprises wire connection holes (1.1) and wire removal holes (1.2) arranged horizontally, and the two wire connection holes (1.1) of the two rows of wiring hole positions arranged vertically in each group of wiring hole units are connected via an avoidance groove 1 (1.3); A mounting seat (2) is arranged in the shell (1), and the upper and lower surfaces of the mounting seat (2) are both provided with two wiring chambers (2.1) arranged left and right, each wiring chamber (2.1) is installed with a spring piece (3), and each wiring chamber (2.1) is directly opposite to a row of wiring holes, and the two corresponding wiring chambers (2.1) between the upper and lower surfaces are connected via a second avoidance groove (2.3), and the second avoidance groove (2.3) is located below the first avoidance groove (1.3) and is connected to each other.

2. A universal transfer switch according to claim 1, characterized in that: A countersunk hole groove (1.4) is provided between two upper and lower wire connection holes (1.1) of each group of wiring hole units.

3. The universal transfer switch according to claim 1, characterized in that: The wire connection hole (1.1) is a stepped hole, and the step surfaces of the stepped hole are all conical surfaces.

4. The universal transfer switch according to claim 1, characterized in that: The spring piece (3) is a V-shaped structure consisting of a fixed section (3.1) and a connecting section (3.2); the fixed section (3.1) is fitted on the inner wall of the wiring chamber (2.1), and the connecting section (3.2) is obliquely overlapped on the inner wall of the other side of the wiring chamber (2.1); and the end of the connecting section (3.2) faces the wire connecting hole (1.1), and the wire removal hole (1.2) faces the middle of the connecting section (3.2).

5. A universal transfer switch according to claim 4, characterized in that: A limiting protrusion (2.2) is provided on the inner wall of the wiring chamber (2.1), and the end of the connecting section (3.2) is overlapped on the limiting protrusion (2.2).

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