Patent Application
20220376409
The disclosure relates to a terminal block structure, particularly to a terminal block structure with easy wire insertion.
Terminal block structures have been widely applied in machine equipment, industrial control equipment and electrical appliances. A terminal block structure is an electric connection device for electrically connecting wires. A related-art terminal block structure is composed of an insulative base and a conductive terminal. The inside of the insulative base is provided with an elastic sheet for fixing a wire. By a pressing operation to the elastic sheet through a stem member, a wire can be inserted into the insulative base to connect with the conductive terminal. The wire is held in the insulative base by the pressing of the elastic sheet.
In order to save the operation space and increase the wiring utility, the moving range of the stem member is usually limited to be within two sides of the insulative base to prevent the stem member from interfering with other components. However, that affects the opening extent of the elastic sheet due to the limited moving range of the stem member. As a result, a wire is difficult to be inserted. Accordingly, how to enlarge the opening extent of the elastic sheet to make a wire be inserted more easily and save the operation space is an issue to be solved.
An object of the disclosure is to increase the opening space of the elastic clamping piece to make a wire be inserted more easily.
To accomplish the above object, the disclosure provides a terminal block structure which includes an insulative base, a conductive terminal, a toggle member and an elastic clamping piece. The insulative base has a chamber, a wire hole and an opened trough communicating with the chamber. The wire hole and the opened trough are located on the same side of the insulative base. The conductive terminal is fixed in the chamber and arranged corresponding to the wire hole. The toggle member includes a main body, a stem and a pressing portion. The stem and the pressing portion are spaced apart and extended from the main body. The main body includes a pivoting portion pivotally connected to the insulative base. The pivoting portion is arranged between the stem and the pressing portion. The stem projects to outside of the insulative base from the opened trough and is movable on a lateral side of the wire hole. The elastic clamping piece is disposed in the chamber. An end of the elastic clamping piece is pressed by the pressing portion to operably open or close the wire hole.
The disclosure further has following functions. By the engaging trough and the rod, the elastic clamping piece may be fixed in the chamber. Thus, more terminal block structures may be accommodated in the same volume range to effectively reduce the installation and use costs.
In view of this, the inventors have devoted themselves to the above-mentioned related art, researched intensively and cooperated with the application of science to try to solve the above-mentioned problems. Finally, the invention which is reasonable and effective to overcome the above drawbacks is provided.
The technical contents of this disclosure will become apparent with the detailed description of embodiments accompanied with the illustration of related drawings as follows. It is intended that the embodiments and drawings disclosed herein are to be considered illustrative rather than restrictive.
The disclosure provides a terminal block structure 1 with easy wire insertion for a wire A to be inserted therein. The wire A has a core line A1. Please refer to
The insulative base 10 is made of plastic or other insulative materials and has a chamber 11 inside. A top of the insulative base 10 is formed with a wire hole 12 and an opened trough 13. The wire hole 12 and the opened trough 13 communicate with the chamber 11. The wire hole 12 and the opened trough 13 are adjacent to each other and located on the same side of the insulative base 10. An engaging trough 111 is formed in the chamber 11 of the insulative base 10. A rod 14 is protruded and disposed in the chamber 11 and adjacent to the opened trough 13.
The conductive terminal 20 is made of material with preferable conductivity, such as copper or an alloy thereof. The conductive terminal 20 is fixed in the chamber 11 and arranged corresponding to a lower position of the wire hole 12. The conductive terminal 20 includes a first conductive piece 21 and a second conductive piece 22 perpendicularly bent from the first conductive piece 21. The first conductive piece 21 has a contact surface 211 parallel to the inserting direction of the wire A and an attaching surface 212 opposite to the contact surface 211. When the wire A is inserted, the core line A1 contacts with the contact surface 211. The attaching surface 212 contacts with an inner wall of the chamber 11. Two ends of the first conductive piece 21 are respectively extended with a connecting pin 213. Each of the connecting pins 213 projects to outside of the insulative base 10 from the chamber 11.
The toggle member 30 is made of plastic or other insulative materials and includes a main body 31, a stem 32 and a pressing portion 33. The stem 32 and the pressing portion 33 are spaced apart and extended from the main body 31 and located on the same side of the main body 31. In this embodiment, the stem 32, the pressing portion 33 and the main body 31 are formed in a single piece, but not limited to this, for example, the stem 32 and the pressing portion 33 may also be fixed on the main body 31 by snapping or fastening. The main body 31 has a pivoting portion 311 pivotally connected to the rod 14 of the insulative base 10. The pivoting portion 311 and the pressing portion 33 are arranged separately. In some embodiments, the pivoting portion 311 is arranged between the stem 32 and the pressing portion 33. The stem 32 projects to outside of the insulative base 10 from the opened trough 13 and is movable on a lateral side of the wire hole 12. Triggering the stem 32 may make the toggle member 30 rotate and swing about the pivoting portion 311 relative to the insulative base 10. In this embodiment, the rod 14 is further extended with a pivot 141 and the pivoting portion 311 is a shaft hole adapted to sheathe the pivot 141, but not limited to this, for example, the rod 14 may also be formed with a pivot hole and the pivoting portion 311 is a pivot.
The elastic clamping piece 40 is made of material with preferable conductivity, such as copper or an alloy thereof. The elastic clamping piece 40 is disposed in the chamber 11 and includes a fixing section 41, a moving section 43 and a connecting section 42 connected between the fixing section 41 and the moving section 43. The fixing section 41 is disposed in the engaging trough 111. The connecting section 42 is adapted to sheathe the rod 14 and restricted between the rod 14 and an inner wall of the chamber 11 so as to fix the elastic clamping piece 40 in the insulative base 10. Part of the moving section 43 abuts against a periphery of the pressing portion 33. The moving section 43 extends to a position below the wire hole 12 to abut against the first conductive piece 21. The moving section 43 is pressed by the pressing portion 33 to operably open or close the wire hole 12. Also, the fixing section 41 is formed with a notch 411. The notch 411 may be snapped by the second conductive piece 22 to further fix the conductive terminal 20.
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While this disclosure has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of this disclosure set forth in the claims.
