TERMINAL BLOCK STRUCTURE AND CONNECTION MODULE FOR THIS

Abstract

A terminal block structure (10) comprises an insulating base body (1) and a connection module (2). The insulating base body (1) has a chamber (11) and is extended by two mounting blocks (12). Two wiring recesses (14) are formed within it. The connection module (2) is housed in the chamber (11) and contains one fixed terminal (21) and two operable terminals (22). The fixed terminal (21) has a transverse plate (211) and two upright plates (212). The two upright plates (212) are bent outwards by two elastic support arms (213) that bear against the two mounting blocks (12). Each operable terminal (22) bears against a corresponding elastic support arm (213) and against each mounting block (12). An outer end of each operable terminal (22) is extended with an operable plate (223) that is blocked between each wiring recess (14) and the chamber (11).One inner end is extended by a stop plate (222).

Description

BACKGROUND Technical area

[0001] The disclosure relates to a terminal block structure and a connection module for it. Related area

[0002] A terminal block is a common connection component widely used in industrial communication with large amounts of data and close integration between devices to improve the electrical power industry with reliability and safety of power systems and industrial control with higher automation.

[0003] A terminal block structure of the related field comprises a plastic frame and a connection module mounted within the plastic frame. The connection module includes an upper elastic plate and a lower elastic plate, which are attached to two sides of the plastic frame. One end of the upper elastic plate has a free end that rests against the lower elastic plate. When a wire or cable is inserted between the free end of the upper elastic plate and the lower elastic plate, the free end of the upper elastic plate can spring back towards the lower elastic plate, causing the wire or cable to be clamped between the free end of the upper elastic plate and the lower elastic plate, thus establishing an electrical connection between the wire or cable and both the upper and lower elastic plates.

[0004] However, it is commonly observed that a flat object, such as a screwdriver, is inserted between the upper elastic plate and the plastic frame, or that an additional tongue is movably or rotatably attached to the upper elastic plate to force the free end of the upper elastic plate away from the lower elastic plate. Since plastic has less supporting force than metal, the upper elastic plate can easily be moved downwards to leave the installed position of the plastic frame. This increases the friction between the upper elastic plate and the plastic frame, which affects the wiring speed and the operation of the terminal block the next time the upper elastic plate is pressed.

[0005] In light of this, the inventors dedicated themselves to the aforementioned state of the art, conducted intensive research, and collaborated with scientific practitioners to attempt to solve the problems mentioned above. Ultimately, they provided an invention that is both practical and effective in overcoming the aforementioned disadvantages.

[0006] DE 20 2024 102 942 U1 describes a terminal block for inserting a cable, comprising a base with receiving chambers formed on an inner side thereof, two rotating sections arranged in the chamber, and two vertical insertion openings connected to the receiving chambers and formed on an outer side thereof, and a connection terminal module arranged in the chamber and a conductive terminal comprising a conductive section and two conductive feeds projecting upwards from two ends of the conductive section, wherein the rotating sections and the associated feeds are arranged opposite each other to the respective insertion opening, and two elastic pieces that abut the two rotating sections, wherein an outer end of each of the elastic pieces forms a clamping point for the cable to be connected with an arm arranged on an outer side of each of the feeds.and an inner end of each of the elastic pieces is provided with a resistance arm, the ends being connected to each other via a bending section. DE 10 2013 101 830 B4 describes an electrical terminal block with a housing and at least one electrical contact insert arranged in the housing.

[0007] DE 10 2019 124 001 A1 describes a conductor terminal with a spring-loaded clamping connection which has a clamping spring.

[0008] Thus, terminal block structures of the generic type without fastening blocks are shown in DE 10 2013 101 830 B4 and DE 10 2019 124 001 A1.

[0009] CN 1 02 593 616 A describes a conductor clamping device comprising a conductor and at least one elastic plate. In particular, it shows a connection terminal module with a conductive terminal (fixed terminal, busbar) comprising a transverse plate and two upright plates extending upwards from two ends of the transverse plate, the two upright plates being provided with two support arms bent outwards; and two operable terminals, each with a contact leg resting against and attached to the two support arms, and with an outer end arranged outside each upright plate.

[0010] CN 2 20 895 879 U discloses a generic terminal block structure comprising: an insulating base body (insulating housing), two chambers, two mounting blocks in the chambers, two wiring recesses (conductor entry channels), a connection terminal module with a fixed terminal (busbar) with a transverse plate and two operable terminals (clamping springs) bearing against the two mounting blocks, wherein an outer end (clamping leg) of each operable terminal (clamping spring) blocks access between each wiring recess (conductor entry channel) and the chamber,

[0011] CN 1 17 458 175 A describes a direct push-in terminal for small diameter wires, comprising an insulating sleeve, an elastic wire clamping piece, a conductive piece and a key part. SUMMARY

[0012] The invention is based on the objective of providing a terminal block structure and a connection module for it that ensure the positioning of the connections even during long-term use.

[0013] In particular, it is an object of the invention to provide a terminal block structure and a connection module that utilize the operable connection so that it rests against the elastic support arm of the fixed connection, in order to ensure that the operable connection remains in its original position after long-term use without deflection, in order to achieve the advantages of the terminal block structure and the connection module with long-term stable wiring speed and long-term stable operation.

[0014] The problem is solved for the terminal block structure according to the features of independent claim 1 and for the connection module therefor according to the features of independent claim 9.

[0015] According to one embodiment of the disclosure, the disclosure provides a terminal block structure comprising: an insulating base body having a chamber extended by two mounting blocks in the chamber and two wiring recesses connected to the chamber formed thereon; and a connection terminal module received in the chamber comprising: a fixed terminal comprising a transverse plate formed corresponding to a lower edge of each wiring recess and two upright plates extended upward by two ends of the transverse plate, the two upright plates being bent outwards by two elastic support arms bearing against the two mounting blocks;and two operable terminals that abut the two elastic support arms and the two mounting blocks, wherein an outer end of each operable terminal is extended by an operable plate formed outside each upright plate and blocked between each wiring trough and the chamber, and an inner end is extended by a stop plate formed corresponding to each operable plate.

[0016] According to one embodiment of the disclosure, the disclosure provides a connection module comprising: a fixed connection having a transverse plate and two upright plates extended upwards by two ends of the transverse plate, the two upright plates being bent outwards with two elastic support arms; and two operable connections abutting the two elastic support arms, an outer end of each operable connection being extended by an operable plate formed outside each upright plate and an inner end being extended by a stop plate formed corresponding to each operable plate.

[0017] As a result, the operable connection rests against the elastic support arm of the fixed connection. Since the metal material of the elastic support arm has better structural strength than the plastic material when the operable plate is pushed inwards, the operable connection exerts pressure on the elastic support arm. However, the strength of the elastic support arm is increased, making it difficult to rotate the operable connection and deflect it from its original position. This ensures that the operable connection remains in its original position without deflection even after long-term use, thus achieving the advantages of the terminal block structure and the connection module with long-term stable wiring speed and operation. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is an exploded view of the connection module of the disclosure; Fig. Figure 2 is an exploded view of the clamping block structure of the disclosure; Fig. Figure 3 is an assembled perspective view of the clamping block structure of the revelation; Fig. Figure 4 is a cross-sectional view of the clamping block structure of the disclosure; Fig. Figure 5 is a schematic view of the usage status of the terminal block structure of the disclosure; Fig. Figure 6 is another schematic view of the usage status of the clamping block structure of the disclosure; Fig. 7 is yet another schematic view of the usage status of the clamping block structure of the disclosure; and Fig. Figure 8 is yet another schematic view of the usage status of the terminal block structure of the disclosure. DETAILED DESCRIPTION

[0018] The technical content of this disclosure is evident from the detailed description of an embodiment together with the accompanying drawings, as follows. The embodiment disclosed herein and the drawings are to be regarded as illustrative and not as limiting.

[0019] It will be directed to the Fig. Reference is made to Figures 1-8. The disclosure provides a terminal block structure and a connection module for it. The connection structure 10 mainly comprises an insulating base body 1 and a connection module 2. The connection module 2 mainly comprises one fixed terminal 21 and two operable terminals 22.

[0020] As in Fig. As shown in Figures 2-8, the insulating base body 1 is made of plastic material. The insulating base body 1 has a chamber 11 and is extended within the chamber 11 by two mounting blocks 12, which form two connecting recesses 13 and two wiring recesses 14 that are connected to the chamber 11. The two connecting recesses 13 are located above the chamber 11. The two wiring recesses 14 are located on two transverse sides of the chamber 11.

[0021] More precisely, the upper surface of each fastening block 12 is formed with a through-hole 121 and a recessed groove 122, and has a curved end 123. The lower wall of each recessed groove 122 is formed with a recessed hole 1221. Each recessed hole 1221 is connected to each through-hole 121. The outlines of the two fastening blocks 12 are laterally symmetrical. Furthermore, the interior of the insulating base body 1 is extended by a lower rod 15 and several projections 16 in the chamber 11.

[0022] As in Fig. As shown in Figures 1-8, the connection module 2 is housed in chamber 11 and contains one fixed terminal 21 and two operable terminals 22. The fixed terminal 21 and the operable terminals 22 are made of conductive metal material. The thickness of the fixed terminal 21 is greater than that of each operable terminal 22.

[0023] More precisely, the fixed connection 21 has a transverse plate 211, which is formed according to a lower edge of each wiring recess 14, and two upright plates 212, which extend upwards through two ends of the transverse plate 211. The central section of the transverse plate 211 is held to a lower rod 15. The transverse plate 211 is formed with several notches 2111. Each projection 16 engages with each notch 2111 to ensure that the transverse plate 211 is firmly positioned in the chamber 11. The two upright plates 212 are bent outwards by two elastic support arms 213. Each upright plate 212 passes through each through-hole 121. Each elastic support arm 213 is embedded in each recessed groove 122 to ensure that the two elastic support arms 213 bear against the two mounting blocks 12.

[0024] Furthermore, each operable terminal 22 has a U-shaped curved plate 221. The center of each U-shaped curved plate 221 rests against each arcuate end 123, and the inner side rests against a corresponding elastic support arm 213 to ensure that the two operable terminals 22 rest firmly against the two elastic support arms 213 and the two mounting blocks 12. An outer end of each operable terminal 22 is extended by an operable plate 223, which is formed outside each upright plate 212 and blocks between each wiring recess 14 and the chamber 11, and an inner end is extended by a stop plate 222, which is formed corresponding to each operable plate 223. Each stop plate 222 and each operable plate 223 are extended separately by two ends of each U-shaped curved plate 221.

[0025] Furthermore, each elastic support arm 213 is provided with an engagement groove 23. Each operable connection 22 is extended by a detent 24. Each detent 24 engages with a corresponding engagement groove 23 and is embedded in each recessed hole 1221. A distal end of each detent 24 extends into a corresponding through-hole 121 and rests against the inside of the connection between each upright plate 212 and each elastic support arm 213.

[0026] Furthermore, each upright plate 212 is formed with a hollow opening 2121, which is shaped according to each wiring recess 14. Each operable plate 223 can penetrate into a corresponding hollow opening 2121. A distal end of each stop plate 222 is bent with an inverted L-shaped locking section 2221. Each inverted L-shaped locking section 2221 is used to block a distal end of a wire material 100, such as a wire or cable.

[0027] Furthermore, the shapes of each upright plate 212 and each elastic support arm 213, which extend in one piece so that they are shaped, are a V-shape, and one shape of each operable connection 22 is an inverted V-shape to cause the fixed connection 21 and the two operable connections 22, which abut each other, to form a butterfly-shaped frame.

[0028] As in Fig. As shown in Figures 2-8, the connection structure 10 of the disclosure further comprises two inwardly sliding handles 3, which are received in each connection recess 13. One end of each inwardly sliding handle 3 is hinged to the insulating base body 1 and the other end rests against each operable plate 223.

[0029] More precisely, each inwardly sliding handle 3 is a U-shaped handle 31. One end of each U-shaped handle 31 is hinged to the insulating base body 1 and forms above each U-shaped curved plate 221. The other end has a movable end 32 that rests against the operable plate 223, and the center is formed with a sliding recess 33 that is exposed in each connection recess 13. Inserting a flat object (not shown), such as a screwdriver, into the sliding recess 33 can drive the U-shaped handle 31 so that it rotates, causing the movable end 32 to push the operable plate 223 so that it moves toward the wiring recess 14.

[0030] As in Fig.As shown in Figures 5-8, which depict the operating state of the terminal block structure 10 and the connection terminal module 2 of the disclosure, a flat object such as a screwdriver is used. This is inserted into the sliding recess 33 to drive the inwardly pushing handle 3, causing it to rotate and drive the moving end 32, which in turn pushes the operable plate 223 toward the wiring trough 14. A wire material 100, such as a wire or cable, is then inserted into the wiring trough 14 until it is blocked by the locking plate 222. The inwardly pushing handle 3 can then be released to cause the operable plate 223 to return to the position that blocks each wiring trough 14 and the chamber 11. Finally, the wire material 100, such as a wire or cable, is clamped between the cross plate 221 and the operable plate 223.This means that the wire material 100, such as a wire or cable, is clamped between the fixed terminal 21 and the operable terminal 22 to complete the wiring operation of the terminal block structure 10.

[0031] Furthermore, the operable connection 22 of the disclosure is located at the arc-shaped end 123 of the insulating base body 1 and at the elastic support arm 213 of the fixed connection 21.Since the metal material of the elastic support arm 213 has better structural strength than the plastic material of the arc-shaped end 123, the U-shaped curved plate 221 of the operable connector 22 exerts pressure on the arc-shaped end 123 and the elastic support arm 213 when the operable plate 223 is pushed towards the wiring recess 14 by the inwardly sliding handle 3, while the strength of the elastic support arm 213 has been increased so that the U-shaped curved plate 221 of the operable connector 22 is difficult to rotate in order to deflect from its original position, and the contact area of ​​the U-shaped curved plate 221 and the mounting block 12 can be reduced to decrease the friction between different materials in order to effectively reduce the rotational force of the U-shaped curved plate 221.This ensures that the operable terminal 22 remains in its original position without deflection after long-term use, in order to achieve the advantages of the terminal block structure 10 and the connection terminal module 2 with long-term stable wiring speed and long-term stable operation.

[0032] Furthermore, the elastic support arm 213 is designed with the engagement groove 23, the operable connection 22 is extended by the locking pawl 24, the locking pawl 24 engages with the engagement groove 23, and a distal end of the locking pawl 24 rests on the inside of the connection between the upright plate 212 and the elastic support arm 213, so that the operable connection 22 and the fixed connection 21 lie more firmly against each other in order to increase the function of the operable connection 22, which continues to remain in its original position without deflection after long-term use. Reference symbol list 1 insulating base body 2 Connection module 3 handles 10 Connection structure 11th Chamber 12 Mounting block 121 Through hole 122 recessed groove 1221 recessed hole 123 arc-shaped end 13 Connecting recess 14 Wiring tray 15 lower staff 16 protrusions 21 fixed connection 211 Cross plate 2111 notch 212 upright plate 2121 hollow opening 213 elastic support arm 22 operable connection 221 U-shaped curved plate 222 Stop plate 2221 inverted L-shaped blocking section 223 operable plate 23 Intervention groove 24 latching pawl 31 U-shaped handle 32 movable end 33 Sliding recess 100 wire material

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