Patent Publication Number: US-2020287302-A1

Title: Terminal block for oven

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application claims priority and rights of patent applications filed with the State Intellectual Property Office of China on Mar. 27, 2018, with patent application numbers of 201810255721.5, and the entire contents of which are incorporated herein by reference. 
     TECHNICAL FILED 
     The present disclosure relates to a terminal block, in particular to a terminal block for an oven. 
     BACKGROUND 
     In the power electronic distribution and wiring, when a group of functional equipment is connected with another group of functional equipment, it is necessary to use some special terminals, which are called terminal block when these terminals are combined. The function of the terminal block is to connect the lines of the two groups of equipment and play the role of signal (current and voltage) transmission. With the terminal block, the wiring is beautiful, the connection is reliable and the maintenance is convenient. 
     At present, it is generally used the terminal block in the oven for wiring connection, the connection between the base and the terminal is generally fixed by screws, which is inconvenient to install and remove, and the screws may be loose, thus causing the separation of the base and the terminal, and even causing damage to the oven. 
     SUMMARY 
     In order to solve the above problems, the present disclosure is to provide a terminal block for an oven, which is simple and ingenious in design, can realize rapid assembly in production, quick wiring and removal in installation and maintenance, and is convenient and quick in use. 
     The technical solution of the present disclosure: 
     A terminal block for an oven, including a base, a terminal, a screw, and a grounding copper sheet, wherein a plurality of terminal mounting slots are provided evenly in the base along transverse direction, the upper sides of both sides of the terminal mounting slots are provided with an opening, and a wire insertion hole is opened at one end of the terminal mounting slot, and the wire insertion hole communicates with the opening; the terminal mounting slots are provided with retaining grooves at the middle of the both sides or at the both sides, the retaining grooves penetrate the bottom of the base, an elastic buckle is provided at the upper portion of the retaining groove; a wire installation through hole which penetrates the both ends of the terminal is provided in the middle of the terminal; the terminal is mounted in the terminal mounting slot; the wire insertion hole communicates with the wire installation through hole, and the elastic buckle is pressed on the top of the terminal; the grounding copper sheet covers and fits a upper surface of the terminal and is fixedly connected by a number of screws; the screws are distributed along the direction of the wire insertion hole, and the screws pass through the top of the terminal and screw vertically into the wire insertion hole, the wire passes through the wire insertion hole and enter into the wire installation through hole, and the roots of the screws are pressed against the wire. The terminal is put into the terminal mounting slot and press down until the elastic buckle in the retaining grooves presses on the terminal, and then the screws are tightly screwed to fix the grounding copper sheet to the terminal, such that the assembly of the terminal block is completed. By releasing of the screws and removing of the grounding copper sheet, and then toggling the elastic buckle, so that the elastic buckle is deformed inward to loosen the terminal, thereby the terminal can be easily taken out after loosening the terminal, which is convenient and quick to use. 
     To further improve and refine the above technical solutions, the screw is an integrated screw with a pad. 
     To further improve and refine the above technical solutions, the creepage distance specified by the safety regulations is maintained between the terminal mounting slots, so as to ensure that there is a sufficient spacing for wiring during the use of the terminal block. And the clearance is provided between the terminal mounting slots to provide a good ventilation condition. 
     To further improve and refine the above technical solutions, the number of the terminal mounting slots is set according to product design requirements. 
     To further improve and refine the above technical solutions, a reinforced connecting plate is longitudinally arranged in the clearance, and the top of the reinforced connecting plate is in an arc shape to make the product more beautiful, lighter and safer. At the same time, the reinforced connecting plate is configured to ensure the stability of the overall structure of the terminal block. 
     To further improve and refine the above technical solutions, the bottom of the base is hollowed out with a plurality of grooves, the grooves communicate with each other, and communicate with the retaining grooves, so as to enhance the heat dissipation effect. 
     To further improve and refine the above technical solutions, the overall dimension of the base are set according to product design requirements. 
     To further improve and refine the above technical solutions, the base is made of PC+10% glass fiber or other heat-resistant engineering plastics to enhance its heat resistant temperature and strength; the terminal is made of aluminum or copper, and the surface of the terminal is zinc-plated; the screw is made of standard carbon steel, and the surface of the screw is nickel-plated or zinc-plated, and quenched; the grounding copper sheet is made of red copper according to standard requirements, so that the overall performance of the terminal block is better, and the rated current is higher. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a front view of the terminal block for oven. 
         FIG. 2  is a top view of the terminal block for the oven. 
         FIG. 3  is a front view of the base. 
         FIG. 4  is a top view of the base. 
         FIG. 5  is a bottom view of the base. 
         FIG. 6  is a schematic diagram showing the structure of the terminal. 
     
    
    
     In the drawings,  01 —base;  02 —terminal;  03 —screw;  04 —grounding copper sheet;  05 —terminal mounting slot;  06 —opening,  07 —wire insertion hole;  08 —elastic buckle;  09 —wire installation through hole;  10 —clearance;  11 —connecting plate. 
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Embodiment 
     As shown in  FIGS. 1-6 , the terminal block for the oven includes base  01 , terminal  02 , screw  03  and grounding copper sheet  04 . The shape of the base  01  is shown like the Chinese character “ ”. There are three terminal mounting slots  05  evenly on the base  01  along the traverse direction. The upper sides of the both sides of the terminal mounting slots  05  are provided an openings  06 , and one end of the terminal mounting slot  05  is provided with a wire insertion hole  07 . The wire insertion hole  07  communicates with an opening  06 , and the middle of the both sides or both sides of the terminal mounting slots  05  are provided with retaining grooves which penetrate through the bottom of the base  01 , and the upper portion of the retaining groove is provided with an elastic buckle  08 . The middle of the terminal  02  is provided with a wire installation through hole  09  which penetrate s through the both ends of the terminal. The terminal  02  is mounted in the mounting terminal mounting slot  05 , the wire insertion hole  07  communicates with the wire installation through hole  09 , and the elastic buckle  08  is pressed on the top of the terminal  02 . The grounding copper sheet  04  covers and fits the upper surface of terminal  02  and is fixed connection by two screws  03 . The screws  03  are evenly distributed along the direction of the wire installation through hole  09 , and the screws  03  are vertically passed through the top of terminal  02  into the wire installation through hole  09 . The wire enters into the wire installation through hole  09 , and the roots of the screws  03  are pressed against the wire. The creepage distance specified in the safety specification is maintained between the terminal mounting slots  05  to effectively ensure the adjacent terminals  02  will not affect each other in extreme cases during the use of the terminal block. Besides, an clearance  10  is provided between the terminal mounting slots  05 , which can provide a good ventilation condition. The clearance  10  is longitudinally provided with a reinforced connecting plate  11 , which makes the product more beautiful and light, and the reinforced connecting plate  11  is used to ensure the stability of the overall structure of the terminal block. The bottom of the base  01  is hollowed out to design a number of grooves  12 , and the grooves  12  communicate with each other, and further the grooves  12  communicate with the retaining grooves, so as to make the product more beautiful and light. The base  01  is made of PC+10% glass fiber or other heat-resistant engineering plastics to enhance its heat resistant temperature and strength. The terminal  02  is made of aluminum or copper, and the surface of the terminal is zinc-plated. The screw  03  is made of standard carbon steel, and the surface of the screw is nickel-plated or zinc-plated, and quenched. The grounding copper sheet is made of red copper according to standard requirements, so that the overall performance of the terminal block is better, and the rated current is higher. 
     Due to the limited expression of words, there are infinite concrete structures objectively. For those of ordinary skill in the art, without departing from the principles of the present disclosure, a number of improvements, modifications, or changes can be made, or the above technical features can be combined in an appropriate manner, those improvements, modifications, changes or combinations, or the application of the inventive concepts and technical solutions to other occasions without creative efforts should be regarded as the scope of the present disclosure.