A terminal block

Abstract

This invention provides a terminal block, including a base and a bottom cover adapted to the base. The base has a partition along its length, dividing it into several wiring slots. A horizontal plate is provided along the width of the base, dividing each wiring slot into a first terminal and a second terminal. The terminal block also includes terminals installed within the wiring slots. Each terminal includes a first contact portion at the first terminal, a second contact portion at the second terminal, a first connecting portion connecting the first and second contacts, a third contact portion below the second contact, and a second connecting portion connecting the second and third contacts. One end of the second connecting portion is connected to one side of the connection between the first connecting portion and the second contact, and the other end is connected to the third contact. This invention reduces production costs and facilitates wiring by the user through the terminal blocks.

Description

Technical Field

[0001] This invention relates to the field of electrical engineering device technology, and specifically to a terminal block. Background Technology

[0002] Conventional terminal blocks lack temperature control devices. When wiring contacts are poor or excessive current flows through the wires, short circuits often occur due to overheating at the terminal block, causing unnecessary losses. Terminal blocks with thermal fuses, on the other hand, can limit the current flowing through the terminals, offering advantages such as safety and reliability. They are increasingly being used as electrical engineering components in various industries.

[0003] Existing terminal blocks include a base, a bottom cover, and terminals. The terminals have a double-layer structure, which results in higher material costs. Furthermore, after installation, one end of the existing terminals tends to lift up, causing significant friction or impact when users connect wires to the terminals. This affects the contact between the two, shortens the lifespan of the terminals, and makes it inconvenient to connect wires to the terminals. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a terminal block that can reduce production costs and facilitate wiring of terminals.

[0005] To address the above problems, the following technical solution is provided: A terminal block includes a base and a bottom cover adapted to the base. The base has a partition along its length, dividing it into several wiring slots. A horizontal plate is provided along the width of the base, dividing each wiring slot into a first terminal and a second terminal. The terminal block also includes terminals installed within the wiring slots. Each terminal includes a first contact portion at the first terminal, a second contact portion at the second terminal, a first connecting portion connecting the first and second contact portions, a third contact portion below the second contact portion, and a connecting... A second connecting part is provided between the second contact part and the third contact part. The first contact part and the second contact part are arranged vertically. One end of the first connecting part is bent downward to connect with the first contact part, and the other end is connected with the second contact part. One end of the second connecting part is connected to one side of the connection between the first connecting part and the second contact part, and the other end is connected with the third contact part. The outer end of the first contact part is provided with a limiting part that is inclined outward and downward. The groove of the first terminal is provided with an abutting part that protrudes upward toward the limiting part. Both the first contact part and the first connecting part are provided with connecting holes, and a wiring screw is fixed in the connecting hole.

[0006] In the above structure, the third contact portion of the terminal block is formed by bending one side of the second contact portion. Compared to existing terminal blocks formed by bending the first contact portion, this reduces material costs and thus lowers the production cost of the present invention. The engagement of the limiting portion and the abutting portion prevents the first contact portion from lifting after the terminal block is installed, improving the installation stability of the terminal block. Furthermore, the beveled design of the limiting portion guides the user during wiring, facilitating wiring and improving the ease of operation of the present invention. The first contact portion and the first connecting portion of the terminal block, together with the wiring screw, form a wiring structure for power supply wiring connections.

[0007] The present invention is further configured such that a clearance opening is provided on the bottom cover at a position corresponding to the limiting part.

[0008] In the above structure, by providing a clearance opening, the bottom cover can be easily installed after the wiring terminal is installed in the base, and the bottom cover can be prevented from abutting against the limiting part, which would cause deformation of the first contact part, thereby improving the reliability of the present invention.

[0009] The invention is further configured such that there are four wiring slots, namely a first wiring slot, a second wiring slot, a third wiring slot, and a fourth wiring slot; it also includes a temperature protection mechanism, which includes a temperature fuse, a first lead, a second lead, a first connecting terminal, and a second connecting terminal. The bottom of the base has a mounting slot for installing the temperature fuse. The first connecting terminal and the second connecting terminal are located in the third wiring slot, and the first connecting terminal and the second connecting terminal are respectively located at the first terminal and the second terminal. The bottom of the base has a wire passage groove connecting the mounting slot and the third wiring slot. The first lead and the second lead are connected to the first connecting terminal and the second connecting terminal respectively through the wire passage groove.

[0010] In the above structure, during installation, the thermal fuse is first installed in the mounting slot, the first and second leads are fixed in the wire guide slot, and then the first and second connecting terminals are respectively snapped into the first and second terminals of the third wiring slot. The wiring terminals are then installed in the first, second, and fourth wiring slots, allowing both the wiring terminals and the thermal fuse mechanism to be directly installed in the base. The bottom cover is then fastened on, improving assembly and production efficiency. The wire guide slots facilitate the installation of the first and second leads and enhance their concealment, thus improving the overall aesthetics of the invention. This invention eliminates the need for additional crimping of the connector between the thermal fuse mechanism and the original fuse, directly integrating the thermal fuse mechanism between the two wiring terminals, reducing parts, lowering production costs, saving space, and making installation convenient.

[0011] The present invention is further configured such that both the first connecting terminal and the second connecting terminal are provided with snap-fit ​​sections, and the third wiring groove is provided with snap-fit ​​grooves that are adapted to both sides of the snap-fit ​​sections, and the snap-fit ​​grooves are connected to the wire passage groove.

[0012] In the above structure, the engagement of the snap-fit ​​segment and the snap-fit ​​groove facilitates the fixed installation of the first connecting terminal and the second connecting terminal, thereby improving the ease of assembly of the present invention.

[0013] The present invention is further configured such that anti-detachment teeth are provided on both sides of the snap-fit ​​section, and the anti-detachment teeth are arranged with a reduced diameter relative to the installation direction of the snap-fit ​​section.

[0014] By adopting the above structure, the stability of the first connecting terminal and the second connecting terminal after installation can be improved, thereby improving the reliability of the present invention.

[0015] The present invention is further configured such that the opening end of the snap-fit ​​groove is provided with a guide opening that is flared outward.

[0016] The above structure can guide the first and second connecting terminals when they are installed into the wiring slot, thereby facilitating the sliding of the snap-fit ​​section into the snap-fit ​​slot and further improving the ease of assembly of the present invention.

[0017] The present invention is further configured such that protrusions are provided on both sides of the first connecting terminal, and a sliding groove adapted to the protrusions is provided on the inner wall of the third wiring groove.

[0018] In the above structure, the cooperation between the protrusion and the groove facilitates the positioning and installation of the first connecting terminal, and further improves the stability of the first connecting terminal, thereby improving the reliability of the present invention.

[0019] The present invention is further configured such that the bottom cover is provided with a support block that abuts against the wiring terminal and the first connection terminal, the support block is hollow at the position relative to the wiring screw, and the bottom cover is provided with a support plate at the position of the second wiring end relative to the first wiring groove, the second wiring groove, the third wiring groove and the fourth wiring groove.

[0020] In the above structure, the support block provides support and limits the wiring terminals and the first connecting terminal, thereby improving the stability and installation firmness of the wiring terminals and the first connecting terminal, and enhancing the overall structural strength of the invention. The support plate further provides support and limits the wiring terminals and supports and fixes the second connecting terminal, further improving the stability of the wiring terminals and the connection between the first and second connecting terminals, and enhancing the reliability of the wiring in this invention.

[0021] The invention is further configured such that: a slot is provided at the corner of the bottom of the base; a locking block is provided on the bottom cover to fit and engage with the slot; a locking opening is provided at both ends of the horizontal plate on the base; a top cover is provided on the base; a locking block is provided on the top cover to fit and engage with the locking opening; a hollow connecting post is provided at the center of the horizontal plate on the base; a connecting hole is provided on the bottom cover to fit the connecting post; a positioning hole with a diameter larger than the outer diameter of the connecting post is provided at the top of the connecting post; and a limiting block is provided on the top cover to fit and engage with the positioning hole.

[0022] In the above structure, the bottom cover is fixed by a snap-fit ​​between a locking block and a locking slot, and positioned by a connecting hole and a connecting post, thereby improving the ease of assembly between the bottom cover and the base and increasing the production efficiency of the invention. The top cover provides dust and water protection, thus improving the safety of the invention. The top cover is fixed by a snap-fit ​​between a locking block and a locking slot, and positioned by a limiting block and a positioning hole, thereby improving the ease and stability of top cover installation and increasing the production efficiency of the invention. By placing the locking slot at the corner of the base bottom, the base provides sufficient opening space for the locking slot without affecting the snap-fit ​​between the locking block and the slot, thus improving the rationality of the invention's structure and the ease of assembly.

[0023] The present invention is further configured such that both the second contact portion and the third contact portion are provided with positioning portions that abut against the horizontal plate.

[0024] In the above structure, the thickness of the positioning part of the terminal block of the present invention is shortened, thereby shortening the overall width of the base. This allows the overall volume of the present invention to be reduced compared to existing terminal blocks, thereby saving overall volume and making it suitable for smaller installation spaces, thus expanding the scope of application of the present invention. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0026] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0027] Figure 3 This is a schematic diagram of the disassembled structure of the present invention.

[0028] Figure 4 This is a cross-sectional view of the present invention. Figure 1 .

[0029] Figure 5 This is a cross-sectional view of the present invention. Figure 2 .

[0030] Figure 6 This is a schematic diagram of the internal structure of the base in this invention.

[0031] Figure 7 This is a schematic diagram of the structure of the first connecting terminal and the second connecting terminal in this invention.

[0032] Figure 8 This is a schematic diagram of the base structure in this invention.

[0033] Figure 9 This is a schematic diagram of the top cover structure in this invention.

[0034] Figure 10 This is a schematic diagram of the wiring terminals of an existing terminal block.

[0035] The labels in the diagram have the following meanings: 1-Base; 2-Bottom cover; 3-Partition; 11-Wiring groove; 12-Horizontal plate; 13-First wiring terminal; 14-Second wiring terminal; 4-Wire terminal block; 41-First contact part; 42-Second contact part; 43-First connecting part; 44-Third contact part; 45-Second connecting part; 46-Limiting part; 111-Abutting part; 5-Wire screw; 21-Leaving opening; 112-First wiring groove; 113-Second wiring groove; 114-Third wiring groove; 115-Fourth wiring groove; 6-Temperature protection mechanism; 61- Temperature fuse; 62-First lead; 63-Second lead; 64-First connecting terminal; 65-Second connecting terminal; 15-Resettling groove; 16-Wire passage groove; 641-Snap-fit ​​section; 1141-Snap-fit ​​groove; 6411-Anti-disengagement tooth; 1142-Guide opening; 642-Protrusion; 1143-Slide groove; 22-Support block; 23-Support plate; 17-Snap-fit ​​groove; 24-Snap-fit ​​block; 18-Snap-fit ​​opening; 7-Top cover; 71-Snap-fit ​​block; 19-Connecting post; 25-Connecting hole; 191-Positioning hole; 71-Limiting block; 47-Positioning part. Detailed Implementation

[0036] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0038] like Figures 1 to 10The terminal block shown includes a base 1 and a bottom cover 2 adapted to the base 1. The base 1 has a partition 3 along its length, dividing it into several wiring slots 11. The base 1 also has a horizontal plate 12 along its width, dividing each wiring slot 11 into a first terminal 13 and a second terminal 14. The terminal block also includes terminals 4 installed within the wiring slots 11. Each terminal 4 includes a first contact portion 41 located at the first terminal 13, a second contact portion 42 located at the second terminal 14, a first connecting portion 43 connecting the first contact portion 41 and the second contact portion 42, a third contact portion 44 located below the second contact portion 42, and a connecting portion 43 connecting the second contact portion 42 and... The third contact portion 44 has a second connecting portion 45. The first contact portion 41 and the second contact portion 42 are arranged vertically. One end of the first connecting portion 43 is bent downward to connect with the first contact portion 41, and the other end is connected with the second contact portion 42. One end of the second connecting portion 45 is connected to one side of the connection between the first connecting portion 43 and the second contact portion 42, and the other end is connected with the third contact portion 44. The outer end of the first contact portion 41 is provided with a limiting portion 46 that is inclined outward and downward. The groove 11 of the first terminal 13 is provided with an abutting portion 111 that protrudes upward toward the limiting portion 46. Both the first contact portion 41 and the first connecting portion 43 are provided with connecting holes 25, and a wiring screw 5 is fixed in the connecting hole 25.

[0039] In the above structure, the third contact portion 44 of the terminal 4 is formed by bending one side of the second contact portion 42. Compared with the existing terminal 4 which is formed by bending the first contact portion 41, this reduces material costs and thus lowers the production cost of the present invention. The limiting portion 46 cooperates with the abutting portion 111 to prevent the first contact portion 41 from lifting after the terminal 4 is installed, improving the installation stability of the terminal 4. Furthermore, setting the limiting portion 46 as an inclined surface provides guidance during wiring, making it easier for the user to connect wires and improving the ease of operation of the present invention. The first contact portion 41 and the first connecting portion 43 of the terminal 4, together with the wiring screw 5, form a wiring structure for power supply wiring connections.

[0040] In this embodiment, a clearance opening 21 is provided on the bottom cover 2 at a position corresponding to the limiting part 46.

[0041] In the above structure, by providing the clearance opening 21, it is convenient to install the bottom cover 2 after the wiring terminal 4 is installed in the base 1, and it can prevent the bottom cover 2 from abutting against the limiting part 46 and causing the first contact part 41 to deform, thereby improving the reliability of the present invention.

[0042] In this embodiment, the wiring slot 11 has four slots: a first wiring slot 112, a second wiring slot 113, a third wiring slot 114, and a fourth wiring slot 115. It also includes a temperature protection mechanism 6, which comprises a temperature fuse 61, a first lead 62, a second lead 63, a first connecting terminal 64, and a second connecting terminal 65. The base 1 has a mounting slot 15 at its bottom for installing the temperature fuse 61. The first connecting terminal 64 and the second connecting terminal 65 are located within the third wiring slot 114, respectively at the first terminal 13 and the second terminal 14. The base 1 has a wire-passing groove 16 at its bottom connecting the mounting slot 15 and the third wiring slot 114. The first lead 62 and the second lead 63 are connected to the first connecting terminal 64 and the second connecting terminal 65 respectively through the wire-passing groove 16.

[0043] In the above structure, during installation, the thermal fuse 61 is first installed in the mounting slot 15, the first lead 62 and the second lead 63 are fixed in the wire guide slot 16, and then the first connecting terminal 64 and the second connecting terminal 65 are respectively snapped into the first terminal 13 and the second terminal 14 of the third wiring slot 114. Then, the terminal 4 is installed in the first wiring slot 112, the second wiring slot 113, and the fourth wiring slot 115. This allows the terminal 4 and the thermal fuse mechanism 6 of the present invention to be directly installed in the base 1, and then the bottom cover 2 is fastened on, improving the assembly efficiency and production efficiency of the present invention. The wire guide slot 16 facilitates the installation of the first lead 62 and the second lead 63 and improves their concealment, thereby enhancing the overall aesthetics of the present invention. The present invention eliminates the need for additional crimping of the connector of the thermal fuse mechanism 6 with the original fuse, directly designing the thermal fuse mechanism 6 between the two terminal 4s, reducing parts, lowering production costs, shrinking space, and making installation and portability easier.

[0044] In this embodiment, both the first connecting terminal 64 and the second connecting terminal 65 are provided with snap-fit ​​sections 641, and the third wiring groove 114 is provided with snap-fit ​​grooves 1141 that are adapted to both sides of the snap-fit ​​section 641. The snap-fit ​​grooves 1141 are connected to the wire passage groove 16.

[0045] In the above structure, the engagement of the snap-fit ​​segment 641 with the snap-fit ​​groove 1141 facilitates the fixed installation of the first connecting terminal 64 and the second connecting terminal 65, thereby improving the ease of assembly of the present invention.

[0046] In this embodiment, anti-detachment teeth 6411 are provided on both sides of the snap-fit ​​section 641, and the anti-detachment teeth 6411 are set with a reduced diameter relative to the installation direction of the snap-fit ​​section 641.

[0047] By adopting the above structure, the stability of the first connecting terminal 64 and the second connecting terminal 65 after installation can be improved, thereby improving the reliability of the present invention.

[0048] In this embodiment, the opening end of the snap-fit ​​groove 1141 is provided with a guide opening 1142 that is flared outward.

[0049] The above structure can guide the first connecting terminal 64 and the second connecting terminal 65 when they are installed into the wiring groove 11, thereby facilitating the sliding of the snap-fit ​​section 641 into the snap-fit ​​groove 1141 and further improving the ease of assembly of the present invention.

[0050] In this embodiment, the first connecting terminal 64 has protrusions 642 on both sides, and the inner wall of the third wiring groove 114 has a sliding groove 1143 that matches the protrusions 642.

[0051] In the above structure, the cooperation between the protrusion 642 and the groove 1143 facilitates the positioning and installation of the first connecting terminal 64, and further improves the stability of the first connecting terminal 64, thereby improving the reliability of the present invention.

[0052] In this embodiment, the bottom cover 2 is provided with a support block 22 that abuts against the wiring terminal 4 and the first connecting terminal 64. The support block 22 is hollow at the position relative to the wiring screw 5. The bottom cover 2 is provided with a support plate 23 at the position of the second wiring terminal 14 relative to the first wiring groove 112, the second wiring groove 113, the third wiring groove 114 and the fourth wiring groove 115.

[0053] In the above structure, the support block 22 provides support and limits the wiring terminal 4 and the first connecting terminal 64, thereby improving the stability and installation firmness of the wiring terminal 4 and the first connecting terminal 64, and enhancing the overall structural strength of the invention. The support plate 23 further provides support and limits the wiring terminal 4 and supports and fixes the second connecting terminal 65, further improving the stability of the wiring terminal 4 and the first connecting terminal 64 and the second connecting terminal 65, and enhancing the reliability of the wiring in this invention.

[0054] In this embodiment, a slot 17 is provided at the bottom corner of the base 1, and a locking block 24 is provided on the bottom cover 2 to fit and engage with the slot 17. A locking opening 18 is provided at both ends of the horizontal plate 12 on the base 1. A top cover 7 is provided on the base 1, and a locking block 71 is provided on the top cover 7 to fit and engage with the locking opening 18. A hollow connecting post 19 is provided at the center of the horizontal plate 12 on the base 1. A connecting hole 25 is provided on the bottom cover 2 to fit the connecting post 19. A positioning hole 191 with a diameter larger than the outer diameter of the connecting post 19 is provided at the top of the connecting post 19. A limiting block 71 is provided on the top cover 7 to fit and engage with the positioning hole 191.

[0055] In the above structure, the bottom cover 2 is fixed by engaging with the slot 17 via a locking block 24, and positioned by engaging with the connecting post 19 via a connecting hole 25. This improves the ease of assembly between the bottom cover 2 and the base 1, and increases the production efficiency of the invention. The top cover 7 provides dust and water protection, thus enhancing the safety of the invention. The top cover 7 is fixed by engaging with the slot 18 via a locking block 71, and positioned by engaging with the positioning hole 191 via a limiting block 71. This improves the ease and stability of installation, and increases the production efficiency of the invention. By placing the slot 17 at the corner of the bottom of the base 1, the base 1 provides sufficient opening space for the slot 18 without affecting the engagement of the locking block 71 within the slot 18, thereby improving the rationality of the structure and the ease of assembly.

[0056] In this embodiment, both the second contact portion 42 and the third contact portion 44 are provided with a positioning portion 47 that abuts against the horizontal plate 12.

[0057] In the above structure, the thickness of the positioning part 47 of the terminal block 4 of the present invention is shortened, thereby shortening the overall width of the base 1. This allows the overall volume of the present invention to be reduced compared to the existing terminal block, thereby saving overall volume and making it suitable for smaller installation spaces, thus expanding the scope of application of the present invention.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications assumed above should also be considered within the scope of protection of the present invention.

Claims

1. A terminal block, comprising a base and a bottom cover adapted to the base, wherein a partition is provided along the length direction of the base, the base being divided into a plurality of wiring slots by the partition, and a transverse plate is provided along the width direction of the base, wherein each of the plurality of wiring slots is divided into a first wiring terminal and a second wiring terminal by the transverse plate, characterized in that: The utility model also includes the wiring terminal installed in the wiring slot, the wiring terminal includes the first contact part at the first wiring end, the second contact part at the second wiring end, the first connecting part connecting the first contact part and the second contact part, the third contact part below the second contact part and the second connecting part connecting the second contact part and the third contact part, the first contact part and the second contact part are arranged in an up-down manner, one end of the first connecting part is bent downward to be connected with the first contact part, the other end is connected with the second contact part, one end of the second connecting part is connected with one side of the connecting part and the second contact part, the other end is connected with the third contact part, the outer end of the first contact part is provided with a limiting part which is inclined outward and downward, the slot opening of the wiring slot of the first wiring end is provided with an abutting part which is protruded upward, connecting holes are formed in the first contact part and the first connecting part, and a wiring screw is fixed in the connecting hole.

2. A terminal block according to claim 1, characterized in that: The bottom cover is provided with a clearance opening corresponding to the limiting part.

3. A terminal block according to claim 1, characterized in that: The wiring slot is provided with four wiring slots, i.e., a first wiring slot, a second wiring slot, a third wiring slot and a fourth wiring slot; the temperature fuse mechanism includes a temperature fuse, a first lead wire, a second lead wire, a first connecting terminal and a second connecting terminal, the base is provided at the bottom with a mounting groove for mounting the temperature fuse, the first connecting terminal and the second connecting terminal are located in the third wiring slot, the first connecting terminal and the second connecting terminal are respectively located at the first wiring end and the second wiring end, the base is provided at the bottom with a wire passing groove which is connected with the mounting groove and the third wiring slot, and the first lead wire and the second lead wire are connected with the first connecting terminal and the second connecting terminal through the wire passing groove.

4. A terminal block according to claim 3, characterized in that: The first connecting terminal and the second connecting terminal are respectively provided with a clamping section, the third wiring slot is provided with clamping grooves which are adapted to the two sides of the clamping section, and the clamping grooves are connected with the wire passing groove.

5. A terminal block according to claim 4, characterized in that: The two sides of the clamping section are respectively provided with anti-disengagement teeth which are tapered relative to the mounting direction of the clamping section.

6. A terminal block according to claim 5, characterized in that: The opening end of the clamping groove is provided with a guide opening which is flared outward.

7. A terminal block according to claim 5, characterized in that: The two sides of the first connecting terminal are respectively provided with protrusions, and the inner wall of the third wiring slot is provided with sliding grooves which are adapted to the protrusions.

8. A terminal block according to claim 6, characterized in that: The bottom cover is provided with a support block which abuts against the wiring terminal and the first connecting terminal, the support block is hollow at a position corresponding to the wiring screw, and the bottom cover is provided with a support plate at a position corresponding to the second wiring end of the first wiring slot, the second wiring slot, the third wiring slot and the fourth wiring slot.

9. A terminal block according to claim 1, characterized in that: The base is provided at the bottom corner with a clamping groove, the bottom cover is provided with a clamping block which is adapted to the clamping groove, the base is provided at both ends of the horizontal plate with a clamping opening, the base is provided with a top cover, the top cover is provided with a clamping block which is adapted to the clamping opening, the base is provided at the center of the horizontal plate with a hollow connecting column, the bottom cover is provided with a connecting hole which is adapted to the connecting column, the top of the connecting column is provided with a positioning hole which has a larger diameter than the outer diameter of the connecting column, and the top cover is provided with a limiting block which is adapted to the positioning hole.

10. A terminal block according to claim 1, characterized in that: The second contact part and the third contact part are provided with positioning parts abutting against the cross plate.

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