Wire terminal platform and large-torque compact iron square box used thereby

Abstract

The utility model discloses a wiring terminal board and big torsion compact type iron square box for using thereof, big torsion compact type iron square box includes the square box main part and the thread cover of the square sleeve shape that forms by long strip shape sheet metal through multiple times bending fixed connection, and the thread cover length is greater than the square box main part upper side wall thickness, wiring terminal board includes the insulating shell with wiring cavity, can slide up and down and is located in the big torsion compact type iron square box of wiring cavity, fixed mounting in the conductive terminal of insulating shell and the screw of screw socket in the side wall of insulating shell, the conductive plate of conductive terminal is inserted in big torsion compact type iron square box, and the thread cover of screw and big torsion compact type iron square box is screwed, and the screw is made big torsion compact type iron square box moves up and down and makes the conductive plate together and clamp tightly or loosen the wire of the wire inlet of insulating shell, the utility model makes iron square box under smaller volume can resist greater torsion and not damage, and reduced the cost of wiring terminal board.

Description

Technical Field

[0001] This utility model relates to a terminal block, and more particularly to a terminal block and a high-torque compact iron square box used therein. Background Technology

[0002] Currently, small screw-type terminal blocks have relatively small square box sizes due to internal space limitations. If a conventional iron square box is used, the torque can only be defined within a relatively small range. To meet the high torque requirements of the product, a copper square box is often required. The manufacturing cost of a copper square box is much higher than that of an iron square box. Therefore, small screw-type terminal blocks are either limited in torque range or expensive. Summary of the Invention

[0003] To overcome the above deficiencies, this utility model provides a terminal block and a high-torque compact iron box for use. The terminal block using this high-torque compact iron box can not only meet the requirements of high torque in small spaces, but is also inexpensive.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a high-torque compact iron square box, including a square box body and a threaded sleeve. The square box body is a square sleeve-shaped structure that runs through the front and back. The threaded sleeve, with a length greater than the thickness of the upper side wall of the square box body, is fixed on the upper side wall of the square box body. The threaded hole on the inner side of the threaded sleeve is connected to the internal space of the square box body.

[0005] As a further improvement of this utility model, the main body of the square box is formed by multiple bending of long strip sheet metal to form an integral structure, and the threaded sleeve is integrally formed on the side wall of the main body of the square box through stretching and tapping processes.

[0006] As a further improvement of this utility model, the two ends of the elongated sheet metal form an overlapping structure, and the two ends of the elongated sheet metal are respectively fixedly connected to the two side walls of the square box body through a fastening structure.

[0007] As a further improvement of this utility model, during the bending process, one end of the elongated sheet metal is stacked on the upper side of the other end to jointly form the lower side wall of the square box body. At least one protrusion is formed on one end of the elongated sheet metal, and at least one slot is formed on the lower part of the left side wall of the square box body formed by bending the elongated sheet metal. Each protrusion on one end of the elongated sheet metal can be inserted into each slot to achieve a snap-fit ​​connection and fixation between one end of the elongated sheet metal and the left side wall of the square box body. An extension bending strip is provided on the other end of the elongated sheet metal, and an embedding groove extending from bottom to top is formed on the right side wall of the square box body formed by bending the elongated sheet metal. The extension bending strip at the other end of the elongated sheet metal is inserted into the embedding groove.

[0008] As a further improvement of this utility model, the left and right sides of the extended bending strip at the other end of the long strip sheet metal are aligned with the left and right sides of the right side wall of the square box body.

[0009] As a further improvement of this utility model, the end of the extended bending strip at the other end of the long strip sheet metal forms a stop portion with an increased width in the front-back direction, and the inlay groove on the right side wall of the square box is a stop groove with an increased size at the upper end in the front-back direction. The stop portion at the end of the extended bending strip is accommodated in the stop groove at the upper end of the inlay groove, and the stop portion at the end of the extended bending strip stops on the lower side of the stop groove.

[0010] As a further improvement of this utility model, a guide bending edge extending from top to bottom is formed on the side wall of one end of the long strip sheet metal along the front-back direction.

[0011] As a further improvement of this utility model, the upper ends of the left and right side walls of the square box body are respectively provided with hollowed-out portions that are directly opposite the positions of the two sides of the threaded sleeve.

[0012] A terminal block includes an insulating housing, a high-torque compact iron square box, conductive terminals, and screws. The insulating housing has a vertically extending wiring cavity formed inside its front side, and a pin cavity communicating with the wiring cavity formed inside its rear side. The front wall of the insulating housing has a wire inlet communicating with the wiring cavity, and the upper wall of the insulating housing has a screw socket communicating with the wiring cavity. The insulating housing also has a pin port communicating with the pin cavity. The high-torque compact iron square box is slidably mounted within the wiring cavity of the insulating housing. The screw is axially stopped but circumferentially rotatable and inserted into the screw socket. A stud is located at the lower end of the screw. The conductive terminal is movably screwed into the threaded sleeve on the upper side wall of the high-torque compact iron square box. The conductive terminal is fixedly installed in the pin cavity of the insulating shell. The conductive terminal is provided with a conductive plate and an elastic clip. The conductive plate extending in the front-back direction of the conductive terminal is inserted into the high-torque compact iron square box. The elastic clip of the conductive terminal is directly opposite the pin port. Rotating the screw can drive the high-torque compact iron square box to slide up and down, so that the lower side wall of the high-torque compact iron square box and the conductive plate of the conductive terminal clamp or loosen the wire inserted from the inlet. The conductive pin inserted from the pin port can be tightly clamped in the elastic clip of the conductive terminal to achieve electrical conduction with the conductive terminal.

[0013] As a further improvement of this utility model, the insulating shell includes a shell body and a shell cover plate. The shell body has a front-opening cavity structure. The shell cover plate can cover the front open part of the cavity structure of the shell body, and the shell cover plate and the shell body can be fastened and fixedly positioned by a snap-fit ​​structure. The screw socket and pin socket are both provided on the side wall of the shell body, and the wire inlet is provided on the shell cover plate. The rear part of the cavity structure forms a pin socket. The conductive terminal includes a conductive body extending in a vertical plane and a conductive plate bent forward from above the conductive body. The U-shaped structure, formed by bending and splicing the conductive body from the left and right sides, and the V-shaped elastic arms extending downward from the side walls of the U-shaped structure, together form an elastic clamp with an opening that can elastically change. The conductive terminal can be inserted into the pin cavity, and the conductive body, conductive plate, and U-shaped structure of the conductive terminal are in close contact with the inner side wall of the pin cavity to achieve stop positioning within the pin cavity. The front part of the cavity structure of the outer shell, the outer shell cover plate, and the conductive body of the conductive terminal together form a wiring cavity. The high-torque compact iron square box can slide up and down to be accommodated in the wiring cavity.

[0014] The beneficial technical effects of this utility model are as follows: This utility model effectively improves the thread strength of the connection with the screw by stretching a threaded sleeve with a relatively large length on the upper side wall of the iron square box, making it less prone to stripping and damage even under large torque. The square box of this application is formed by stamping, stretching and bending of long strip sheet metal, which has low material cost and high strength. Moreover, after the two ends of the sheet metal overlap, the double buckle fastening structure allows the two ends of the long strip plate to be fastened to the left and right side walls of the square box to form an integral structure. This structure can effectively prevent the fastening between the box plates from cracking under large torque, so that the iron square box can resist large torque without damage in a small volume, thereby meeting the user's need for use in small spaces with large torque. In addition, since the square box is made of iron sheet metal, the material cost and manufacturing cost are low, which can give it a price advantage in market competition. Attached Figure Description

[0015] Figure 1 Here is a structural diagram of the existing copper square box; Figure 2 This is a first perspective view of the high-torque compact iron square box of this utility model; Figure 3 This is a second perspective view of the high-torque compact iron square box of this utility model; Figure 4 This is a front view of the high-torque compact iron square box of this utility model; Figure 5 This is a top view of the high-torque compact iron square box of this utility model; Figure 6 This is a right view of the high-torque compact iron square box of this utility model; Figure 7 This is a perspective view of the terminal block of this utility model; Figure 8 This is a front view of the terminal block of this utility model; Figure 9 This is a top view of the terminal block of this utility model; Figure 10 This is a right view of the terminal block of this utility model; Figure 11 This is an exploded perspective view of the terminal block of this utility model; Figure 12 This is a perspective view of the main body of the terminal block housing of this utility model; Figure 13 This is a perspective view of the screws in the terminal block of this utility model; Figure 14 This is a perspective view of the conductive terminals of the terminal block of this utility model; Figure 15 This is a perspective view of the outer cover plate of the terminal block of this utility model. Detailed Implementation

[0016] Example: A high-torque compact iron square box includes a square box body 11 and a threaded sleeve 12. The square box body 11 is a square sleeve-shaped structure that runs through the front and back. The threaded sleeve 12, with a length greater than the thickness of the upper sidewall of the square box body 11, is fixedly installed on the upper sidewall of the square box body 11. The threaded hole on the inner side of the threaded sleeve 12 communicates with the internal space of the square box body 11. The square box body 11 is made of iron material, and a threaded sleeve 12 with a length greater than the thickness of the upper sidewall of the square box is formed on its upper sidewall. The threaded sleeve 12 is relatively long and has good thread strength, making it less prone to stripping and damage even under large torque.

[0017] The main body 11 of the square box is formed by bending and fixing elongated sheet metal into an integral structure. The threaded sleeve 12 is integrally formed on the side wall of the main body 11 of the square box through stretching and tapping processes. The integral structure is formed by stamping, stretching and bending elongated steel sheet metal. The manufacturing cost of forming with elongated sheet metal is low. It can be quickly formed with stamping dies, and the production efficiency is high. The stretching process can form a threaded sleeve 12 with a relatively long length on the square box. In addition to using elongated sheet metal to process and form with stamping dies, it can also be processed and formed by machining steel blocks. This is an equivalent replacement structure that can be easily thought of by those skilled in the art based on this patent and is within the protection scope of this patent.

[0018] The two ends of the elongated sheet metal form an overlapping structure, and the two ends of the elongated sheet metal are fixedly connected to the two side walls of the square box body 11 by a fastening structure. The overlapping and fastening connection of the two ends of the elongated sheet metal results in high connection strength, which can withstand large torque, and the manufacturing process is simple. In addition, the two ends of the elongated sheet metal can also be fixedly connected by dovetail fastening or welding.

[0019] During the bending process, one end of the elongated sheet metal overlaps the upper side of the other end to form the lower side wall of the square box body 11. At least one protrusion 13 is formed on one end of the elongated sheet metal. At least one slot 14 is formed on the lower part of the left side wall of the square box body 11 formed by bending the elongated sheet metal. Each protrusion 13 on one end of the elongated sheet metal can be inserted into each slot to achieve a snap-fit ​​connection and fixation between one end of the elongated sheet metal and the left side wall of the square box body 11. An extension bending strip 15 is provided on the other end of the elongated sheet metal. An embedding groove 16 extending from bottom to top is formed on the right side wall of the square box body 11 formed by bending the elongated sheet metal. The extension bending strip 15 on the other end of the elongated sheet metal is inserted into the embedding groove 16. One end of the elongated sheet metal is fastened to a bayonet by a protrusion 13, allowing the sheet metal to be automatically positioned during bending. At the same time, a narrower extension bending strip 15 is formed at the other end of the elongated sheet metal. After the square box is bent, it continues to bend and is inserted into the groove 16 on the right side wall of the square box body 11 during the bending process. This achieves a fastening connection between the other end of the elongated sheet metal and the side wall of the square box body 11, resulting in a seamless fastening connection between the two ends of the elongated sheet metal and the left and right side walls of the square box. This ensures the flatness of the left and right side walls of the square box and improves the fixed connection strength between the two ends of the elongated sheet metal and the side walls of the square box, allowing the square box to withstand greater torque without the two ends of the sheet metal detaching from the side walls of the square box.

[0020] The left and right sides of the extended bending strip 15 at the other end of the long strip sheet metal are aligned with the left and right sides of the right side wall of the square box body 11.

[0021] The end of the extended bending strip 15 at the other end of the elongated sheet metal forms a stop portion 151 whose width increases along the front-to-back direction. The inlay groove 16 on the right side wall of the square box is a stop groove 161 whose upper end increases in size along the front-to-back direction. The stop portion 151 at the end of the extended bending strip 15 is accommodated in the stop groove 161 at the upper end of the inlay groove 16, and the stop portion 151 at the end of the extended bending strip 15 stops on the lower side of the stop groove 161. The extended bending strip 15 is designed with a T-shaped or L-shaped structure, and the corresponding inlay groove 16 is designed with a T-shaped or L-shaped mechanism, so that even if the extended bending strip 15 is subjected to tensile force after being embedded in the inlay groove 16, it will not fall out of the inlay groove 16, ensuring the strength of the fastening connection.

[0022] A guide bend 17 extending downwards is formed on the side wall of the long strip sheet metal at one end along the front-to-back direction. This guide bend 17 is in close contact with the inner side of the insulating shell 20 of the terminal block during the sliding of the square box. While guiding the sliding of the square box, it also blocks the lower part of the inlet 21 and guides the inserted wire, preventing the wire from being inserted into the outer side of the lower end of the square box.

[0023] The upper ends of the left and right side walls of the square box body 11 are respectively provided with hollowed-out portions 18 that are directly opposite the two sides of the threaded sleeve 12. The hollowed-out portions 18 can improve the deformation of the upper threaded holes during sheet metal stamping and form, ensuring that the threaded holes are more rounded.

[0024] A terminal block includes an insulating housing 20, a high-torque compact iron box 10, conductive terminals 30, and screws 40. The insulating housing 20 has a vertically extending wiring cavity formed on its front interior, and a pin cavity communicating with the wiring cavity formed on its rear interior. The front wall of the insulating housing 20 has an inlet 21 communicating with the wiring cavity, and the upper wall of the insulating housing 20 has a screw socket 22 communicating with the wiring cavity. The insulating housing 20 also has a pin port communicating with the pin cavity. The high-torque compact iron box 10 is slidably mounted within the wiring cavity of the insulating housing 20. The screw 40 is axially stopped but circumferentially rotatable and inserted into the screw socket 22. The stud at the lower end of the screw 40 is connected to the high-torque compact iron box 10. The threaded sleeve 12 on the upper side wall of the high-torque compact iron square box 10 is movably screwed in, and the conductive terminal 30 is fixedly installed in the pin cavity of the insulating shell 20. The conductive terminal 30 is provided with a conductive plate 32 and an elastic clip. The conductive plate 32 of the conductive terminal 30 extends in the front-back direction and is inserted into the high-torque compact iron square box 10. The elastic clip of the conductive terminal 30 is directly opposite the pin port. Rotating the screw 40 can drive the high-torque compact iron square box 10 to slide up and down, so that the lower side wall of the high-torque compact iron square box 10 clamps or loosens the conductive plate 32 of the conductive terminal 30. The wire inserted from the inlet 21 can be tightly clamped in the elastic clip of the conductive terminal 30 to achieve electrical conduction with the conductive terminal 30. During wiring, the wire is inserted into the high-torque compact iron square box 10 through the inlet 21 on the insulating shell 20. Turning the screw 40 causes the square box to slide upward. The wire is clamped by the conductive plate 32 of the conductive terminal 30 and the lower side wall of the square box, thus achieving a wire-to-wire connection between the wire and the conductive terminal 30. The conductive pin is inserted through the pin port on the insulating shell 20 and clamped by the elastic clamp of the conductive terminal 30, thus achieving a conductive connection between the conductive pin and the conductive terminal 30. This enables quick and convenient wiring of the circuit.

[0025] The insulating shell 20 includes a shell body 23 and a shell cover 24. The shell body 23 has a front-opening cavity structure 25. The shell cover 24 covers the front open portion of the cavity structure 25 of the shell body 23, and the shell cover 24 and the shell body 23 can be fixedly positioned by a snap-fit ​​structure 26. The screw socket 22 and pin socket are both located on the side wall of the shell body 23, and the wire inlet 21 is located on the shell cover 24. A pin socket is formed at the rear of the cavity structure 25. The conductive terminal 30 includes a conductive body 31 extending in a vertical plane, a conductive plate 32 bent forward from above the conductive body 31, and a... The conductive body 31 is joined together with a U-shaped structure 33 formed by bending the left and right sides backward, and V-shaped elastic arms 34 extending downward from the side walls of the U-shaped structure 33. The two V-shaped elastic arms 34 together form an elastic clamp with an opening that can elastically change. The conductive terminal 30 can be inserted into the pin cavity, and the conductive body 31, conductive plate 32, and U-shaped structure 33 of the conductive terminal 30 are tightly attached to the inner side wall of the pin cavity to achieve stop positioning within the pin cavity. The front part of the cavity structure 25 of the outer shell 23, the outer shell cover 24, and the conductive body 31 of the conductive terminal 30 together form a wiring cavity. The high-torque compact iron square box 10 can slide up and down to accommodate within the wiring cavity. The insulating shell 20 adopts a separate snap-fit ​​connection structure of the outer shell 23 and the outer shell cover 24, which facilitates the assembly of the conductive terminal 30 and the high-torque compact iron square box 10.

Claims

1. A high-torque compact iron square box, characterized by: It includes a square box body (11) and a threaded sleeve (12). The square box body is a square sleeve-shaped structure that runs through the front and back. The threaded sleeve, which is longer than the thickness of the upper side wall of the square box body, is fixed on the upper side wall of the square box body. The threaded hole inside the threaded sleeve is connected to the internal space of the square box body.

2. The high-torque compact iron square box according to claim 1, characterized in that: The main body of the square box is formed by bending and fixing long strip sheet metal into an integral structure, and the threaded sleeve is integrally formed on the side wall of the main body of the square box through stretching and tapping processes.

3. The high-torque compact iron square box according to claim 2, characterized in that: The long strip sheet metal has overlapping joints at both ends, and the two ends of the long strip sheet metal are fixedly connected to the two side walls of the square box body through fastening structures.

4. The high-torque compact iron square box according to claim 3, characterized in that: During the bending process, one end of the long strip sheet metal is stacked on the upper side of the other end and together they form the lower side wall of the square box body. At least one protrusion (13) is formed on one end of the long strip sheet metal. At least one slot (14) is formed on the lower part of the left side wall of the square box body formed by bending the long strip sheet metal. Each protrusion on one end of the long strip sheet metal can be inserted into each slot to realize the fastening connection and fixation between one end of the long strip sheet metal and the left side wall of the square box body. An extension bending strip (15) is provided on the other end of the long strip sheet metal. An inlay groove (16) extending from bottom to top is formed on the right side wall of the square box body formed by bending the long strip sheet metal. The extension bending strip at the other end of the long strip sheet metal is inserted into the inlay groove.

5. The high-torque compact iron square box according to claim 4, characterized in that: The left and right sides of the extended bending strip at the other end of the long strip are aligned with the left and right sides of the right side wall of the square box body.

6. The high-torque compact iron square box according to claim 4, characterized in that: The end of the extended bending strip at the other end of the long strip sheet metal forms a stop portion (151) whose width increases in the front-back direction. The inlay groove on the right side wall of the square box is a stop groove (161) whose upper end increases in size in the front-back direction. The stop portion at the end of the extended bending strip is accommodated in the stop groove at the upper end of the inlay groove, and the stop portion at the end of the extended bending strip stops on the lower side of the stop groove.

7. The high-torque compact iron square box according to claim 4, characterized in that: The long strip sheet metal has a guide bend (17) extending from top to bottom on one end of its side wall along the front-back direction.

8. The high-torque compact iron square box according to claim 4, characterized in that: The upper ends of the left and right side walls of the main body of the square box are respectively provided with hollowed-out parts (18) that are directly opposite to the two sides of the threaded sleeve.

9. A terminal block using the high-torque compact iron square box as described in any one of claims 1-8, characterized in that: The device includes an insulating housing (20), a high-torque compact iron square box (10), conductive terminals (30), and screws (40). The insulating housing has a vertically extending wiring cavity on its front side and a pin cavity communicating with the wiring cavity on its rear side. The insulating housing has a wire inlet (21) communicating with the wiring cavity on its front side wall and a screw socket (22) communicating with the wiring cavity on its upper side wall. The insulating housing also has a pin socket communicating with the pin cavity. The high-torque compact iron square box can only slide upwards and is installed in the wiring cavity of the insulating housing. The screw is axially stopped but circumferentially rotatable and inserted into the screw socket. The stud at the lower end of the screw is movably screwed into the threaded sleeve on the upper side wall of the high-torque compact iron square box. The conductive terminal is fixedly installed in the pin cavity of the insulating shell. The conductive terminal is provided with a conductive plate and an elastic clip. The conductive plate extending in the front-back direction of the conductive terminal is inserted into the high-torque compact iron square box. The elastic clip of the conductive terminal is directly opposite the pin port. Rotating the screw can drive the high-torque compact iron square box to slide up and down, so that the lower side wall of the high-torque compact iron square box and the conductive plate of the conductive terminal clamp or loosen the wire inserted from the inlet. The conductive pin inserted from the pin port can be tightly clamped in the elastic clip of the conductive terminal to achieve electrical conduction with the conductive terminal.

10. The terminal block according to claim 9, characterized in that: The insulating shell includes a shell body (23) and a shell cover (24). The shell body has a front-opening cavity structure (25). The shell cover can cover the front open part of the cavity structure of the shell body, and the shell cover and the shell body can be fastened and fixedly positioned by a snap-fit ​​structure (26). The screw socket and the pin socket are both located on the side wall of the shell body, and the wire inlet is located on the shell cover. The rear part of the cavity structure forms a pin cavity. The conductive terminal includes a conductive body (31) extending in a vertical plane and a conductive plate (32) bent forward from above the conductive body. The U-shaped structure (33) formed by bending and splicing the conductive body from the left and right sides and the V-shaped elastic arms (34) extending downward from the two side walls of the U-shaped structure together form an elastic clamp with an opening that can change elastically. The conductive terminal can be inserted into the pin cavity, and the conductive body, conductive plate and U-shaped structure of the conductive terminal are in close contact with the inner side wall of the pin cavity of the terminal to achieve stop positioning in the pin cavity. The front part of the cavity structure of the outer shell, the outer shell cover and the conductive body of the conductive terminal together form a wiring cavity. The high-torque compact iron square box can slide up and down to be accommodated in the wiring cavity.

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