Novel terminal post structure

Abstract

The application relates to a novel terminal post structure, and belongs to the technical field of teaching experiment tools, which comprises an insulating base, a conductor, a bolt and a knob; the conductor is fixed on the insulating base in a mechanical fixing mode, the head of the bolt is connected to the surface of the conductor in a direct fixing mode, the direct fixing mode is at least one of welding, conductive glue bonding, cold pressure bonding, riveting or integral molding, the rod body of the bolt extends outward from the surface of the conductor; the knob is sleeved on the tail of the rod body of the bolt and is connected with the bolt through thread cooperation. The application can reduce the number of parts and assembly steps and simplify the overall structure; the direct fixing mode of the bolt and the conductor can ensure a stable electrical connection path and reduce the problem of poor contact. In addition, compared with the mode of fixing the bolt through a fastening nut, the bolt in the application is not easy to loosen, thereby ensuring the safety of experimental operation of young students.

Description

Technical Field

[0001] This application relates to the field of teaching experimental equipment, and in particular to a novel terminal block structure. Background Technology

[0002] Terminal blocks, as fundamental components for wire connections in teaching experimental circuits, are widely used in teaching aids such as physics experiment lamp holders, switch assemblies, and battery boxes. The simplicity of their structural design and the safety of their operation significantly impact students' experimental efficiency and learning experience. Traditional teaching experimental terminal blocks typically consist of an insulated base, a metal conductor, a bolt, a knob, and a fastening nut. The bolt head is fixed to the base, and the bolt body passes through a through-hole in the base and conductor, followed by the fastening nut and knob. Rotating the knob moves it axially along the bolt, clamping the wire between the knob and the fastening nut to complete the electrical connection.

[0003] However, this traditional structure reveals many shortcomings in teaching scenarios: the knob and the fastening nut need to be assembled separately onto the bolt, resulting in a large number of parts and high processing costs. Younger students may also experience loose wires or poor contact due to difficulties in coordinating the adjustment of the knob and the fastening nut. As independent small parts, the bolt and fastening nut are at risk of falling off, especially since younger students may put them in their mouths and accidentally swallow them. Once the bolt and fastening nut become loose, they can easily fall into the gaps of the experimental equipment and be difficult to retrieve, which increases the burden of laboratory management and may interrupt the experimental process, hindering efficient teaching. In addition, the separate design of multiple components in the traditional structure makes daily maintenance and parts replacement inefficient, further limiting the long-term use value of the teaching aid. Utility Model Content

[0004] To simplify experimental procedures and ensure the safety of teaching experiments, this application provides a novel terminal block structure.

[0005] This application provides a novel terminal block structure, which adopts the following technical solution: A novel terminal block structure includes an insulating base, a conductor, a bolt, and a knob. The conductor is mechanically fixed to the insulating base, and the head of the bolt is directly fixed to the surface of the conductor. The direct fixing method is at least one of welding, conductive adhesive bonding, cold pressing, riveting, or integral molding. The shank of the bolt extends outward from the surface of the conductor. The knob is sleeved on the tail of the bolt shank and connected to the bolt via a threaded connection.

[0006] By adopting the above technical solution, the conductor is mechanically fixed to the insulating base and the bolt head is directly fixed to the conductor surface, eliminating the independent nut and through-hole structure in the conductor used for fixing the bolt in traditional terminals. This reduces the number of parts and assembly steps, simplifying the overall structure. The direct fixing method between the bolt and the conductor ensures a stable electrical connection path, avoiding poor contact problems caused by loose threads. At the same time, the threaded design of the knob and bolt allows students to quickly complete wire crimping through simple rotation, improving the convenience and safety of experimental operations.

[0007] Optionally, the knob is integrally molded from insulating material, and the outer surface of the knob is provided with anti-slip texture.

[0008] By adopting the above technical solution, the anti-slip texture increases the friction of the hand, making it easier for students to apply force when rotating the knob by hand, reducing the phenomenon of loose wire crimping or knob falling off due to slippage, and improving the reliability of operation and the durability of teaching aids.

[0009] Optionally, the bottom of the knob is provided with an annular crimping surface, which is configured to form a surface contact with the contact surface of the end of the wire.

[0010] By adopting the above technical solution, it is easy to ensure the effective contact area between the wire end and the conductor, and reduce the contact resistance. The uniform pressure applied to the wire end by the ring crimping surface avoids the bending and deformation of the wire caused by traditional point contact, ensuring that the wire can maintain a flat contact state after frequent insertion and removal, and extending the number of times the wire can be reused.

[0011] Optionally, the mechanical fixing method is snap-fit ​​or injection molding fixing: When a snap-fit ​​connection is used, the conductor is provided with a barb structure, and the insulating base is provided with a slot adapted to the barb structure; When injection molding is used for fixing, the conductor is embedded in the injection molding material of the insulating base.

[0012] By adopting the above technical solutions, the conductor and the insulating base are fixed by snap-fit ​​or injection molding. The snap-fit ​​structure utilizes the cooperation of barbs and slots to achieve rapid assembly, reducing production time and processing costs. Injection molding embeds the conductor into the insulating base material, eliminating assembly gaps between the conductor and the insulating base, enhancing the overall structural integrity and improving the insulation protection level. Both fixing methods can be flexibly selected according to the type of teaching aid and cost requirements, adapting to the needs of different teaching scenarios.

[0013] Optionally, the mechanical fixing method is riveting fixing: the conductor is provided with a pin, the insulating base is provided with a mounting hole, the pin passes through the mounting hole and is folded over to form a rolled edge structure that is pressed against the periphery of the mounting hole.

[0014] By adopting the above technical solution, the conductor pins pass through the mounting holes of the insulating base and then fold to form a rolled-edge clamping structure. This utilizes the plastic deformation of the metal to achieve mechanical interlocking between the conductor and the insulating base, eliminating the need for additional fasteners or adhesives and reducing material costs and process complexity. The rolled-edge structure increases the contact area between the conductor and the base, preventing displacement or loosening of the conductor under stress and ensuring the durability of the teaching aid.

[0015] Optionally, the mechanical fixing method can be any combination of snap-fit, injection molding, and riveting.

[0016] By adopting the above technical solutions, the connection strength between the conductor and the insulating base is enhanced through a combination of fixing methods, preventing the risk of failure of a single fixing method under extreme working conditions and improving the structural reliability of the teaching aid in complex usage environments.

[0017] Optionally, the bolt has an external thread section at the tail end, and the knob has an internal thread sleeve section that matches the external thread section, and the length of the external thread section is greater than the axial length of the internal thread sleeve section.

[0018] By adopting the above technical solution, the knob can move a wider range on the bolt shank, adapting to the crimping requirements of different wire end contacts. The redundant length of the external thread section prevents the knob from falling off and being lost when fully disengaged from the thread, ensuring that the knob always remains connected to the bolt and reducing teaching interruptions caused by lost parts during experiments.

[0019] In summary, this application includes the following beneficial technical effects: 1. This application eliminates the need for a separate nut and through-hole in the conductor used in traditional terminals by mechanically fixing the conductor to an insulating base and directly fixing the bolt head to the conductor surface. This reduces the number of parts and assembly steps, simplifying the overall structure. The direct fixing method between the bolt and the conductor ensures a stable electrical connection path, avoiding poor contact problems caused by loose threads. Furthermore, the threaded design of the knob and bolt allows students to quickly crimp the wires through simple rotation, improving the convenience and safety of experimental operations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the overall structure of Embodiment 1 of this application.

[0021] Figure 2 This is an exploded view of the connection relationship between the bolt and the conductor in Embodiment 1 of this application.

[0022] Figure 3 This is an exploded view illustrating the relationship between the bolt and the knob in Embodiment 1 of this application.

[0023] Figure 4This is a schematic diagram illustrating the structure of the conductor being snapped and fixed on the insulating base in Embodiment 1 of this application.

[0024] Figure 5 This is a schematic diagram illustrating the structure of the conductor injection molding and fixing on the insulating base in Embodiment 2 of this application.

[0025] Figure 6 This is a schematic diagram illustrating the structure of the conductor being riveted and fixed on the insulating base in Embodiment 3 of this application.

[0026] Figure 7 This is a schematic diagram illustrating the structure in Embodiment 4 of this application where the conductor is fixed to the insulating base by a combination of snap-fit ​​and riveting.

[0027] Explanation of reference numerals in the attached drawings: 1. Insulating base; 11. Slot; 12. Mounting hole; 2. Conductor; 21. Barbed structure; 22. Pin; 3. Bolt; 31. External thread section; 4. Knob; 41. Internal thread sleeve section; 42. Annular crimping surface; 43. Anti-slip texture. Detailed Implementation

[0028] The following combination Figures 1-7 This application will be described in further detail below.

[0029] Example 1: Example 1 of this application discloses a novel terminal block structure. (Refer to...) Figure 1 and Figure 2 A novel terminal block structure includes an insulating base 1, a conductor 2, a bolt 3, and a knob 4. The conductor 2 is mechanically fixed to the insulating base 1. The head of the bolt 3 is directly fixed to the surface of the conductor 2 by at least one of welding, conductive adhesive bonding, cold pressing, riveting, or integral molding. The shank of the bolt 3 extends outward from the surface of the conductor 2. The knob 4 is fitted onto the tail of the shank of the bolt 3 and is connected to the bolt 3 by a threaded connection.

[0030] This application mechanically fixes the conductor 2 to the insulating base 1 and directly fixes the head of the bolt 3 to the surface of the conductor 2. The direct fixing method can be at least one of welding, conductive adhesive bonding, cold pressing, riveting, or integral molding. While ensuring conductivity at the connection between the bolt 3 and the conductor 2, it eliminates the need for a separate nut for fixing the bolt 3 and the through-hole structure inside the conductor 2 found in traditional terminals. This reduces the number of parts and assembly steps, simplifying the overall structure. Furthermore, the direct fixing method of the bolt 3 to the conductor 2 ensures a stable electrical connection path, avoiding poor contact problems caused by loose threads. Simultaneously, the threaded design of the knob 4 and the bolt 3 allows students to quickly complete wire crimping through simple rotation, improving the convenience and safety of experimental operations.

[0031] Reference Figure 2 and Figure 3The bolt 3 has an external threaded section 31 at its tail end, and the knob 4 has an internal threaded sleeve section 41 that matches the external threaded section 31. The length of the external threaded section 31 is greater than the axial length of the internal threaded sleeve section 41. This allows the knob 4 to move a wider range on the bolt 3, adapting to the crimping requirements of wire end contacts of different thicknesses. The redundant length of the external threaded section 31 prevents the knob 4 from falling off and being lost when fully unthreaded, ensuring that the knob 4 remains connected to the bolt 3 at all times, reducing teaching interruptions caused by lost parts during experiments.

[0032] Reference Figure 3 To ensure an effective contact area between the conductor end and conductor 2 and reduce contact resistance, the bottom of knob 4 is provided with an annular crimping surface 42, which is configured to form surface contact with the contact surface of the conductor end. Furthermore, the uniform pressure applied to the conductor end by the annular crimping surface 42 avoids the bending and deformation of the conductor caused by traditional point contact, ensuring that the conductor maintains a flat contact state even after frequent insertion and removal, thus extending the number of times the conductor can be reused.

[0033] Reference Figure 2 and Figure 3 The insulating base 1 is made of plastic. To comply with the safety regulations for teaching equipment, the knob 4 is integrally molded from insulating material, and the outer surface of the knob 4 is provided with anti-slip texture 43. The anti-slip texture 43 increases the friction of the hand, making it easier for students to apply force when rotating the knob 4 by hand, reducing the occurrence of loose wire crimping or knob 4 falling off due to slippage, and improving the reliability of operation and the durability of the teaching aid.

[0034] Reference Figure 4 The mechanical fixing method between the conductor 2 and the insulating base 1 is a snap-fit ​​connection: a barb structure 21 is fixed on the conductor 2, and a slot 11 adapted to the barb structure 21 is provided on the insulating base 1. In this way, this embodiment can realize the rapid assembly of the conductor 2 and the insulating base 1 by utilizing the cooperation of the barb structure 21 and the slot 11, which is beneficial to reducing production time and processing costs.

[0035] Example 2: Example 2 of this application discloses a novel terminal block structure. (Refer to...) Figure 5 The difference between this second embodiment and the first embodiment is that the mechanical fixing method between the conductor 2 and the insulating base 1 is injection molding: the conductor 2 is pre-embedded in the injection molding material of the insulating base 1. By pre-embedding the conductor 2 in the material of the insulating base 1, this second embodiment can eliminate the assembly gap between the conductor 2 and the insulating base 1, which is beneficial to enhancing the overall structural integrity and improving the insulation protection level.

[0036] Example 3: Example 3 of this application discloses a novel terminal block structure. (Refer to...) Figure 6The difference between Embodiment 3 and Embodiment 1 lies in the mechanical fixing method between the conductor 2 and the insulating base 1: riveting fixing. The conductor 2 has an integrally formed insert 22 on its edge, and the insulating base 1 has a mounting hole 12. The insert 22 passes through the mounting hole 12 and then folds over, forming a rolled edge structure that presses tightly against the periphery of the mounting hole 12. Embodiment 3 utilizes the plastic deformation of metal to achieve mechanical interlocking between the conductor 2 and the insulating base 1, eliminating the need for additional fasteners or adhesives, thus reducing material costs and process complexity. The folded rolled edge structure increases the contact area between the conductor 2 and the insulating base 1, preventing displacement or loosening of the conductor 2 under stress and ensuring the durability of the teaching aid.

[0037] Example 4: Example 4 of this application discloses a novel terminal block structure. (Refer to...) Figure 7 The difference between this fourth embodiment and the first embodiment is that the mechanical fixing method between the conductor 2 and the insulating base 1 is any combination of snap-fit, injection molding, and riveting. This fourth embodiment enhances the connection strength between the conductor 2 and the insulating base 1 through a combination of mechanical fixing methods, prevents the failure risk of a single fixing method under extreme working conditions, and improves the structural reliability of the teaching aid in complex usage environments.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel terminal block structure, characterized in that: The device includes an insulating base (1), a conductor (2), a bolt (3), and a knob (4). The conductor (2) is mechanically fixed to the insulating base (1). The head of the bolt (3) is directly fixed to the surface of the conductor (2). The direct fixing method is at least one of welding, conductive adhesive bonding, cold pressing, riveting, or integral molding. The shank of the bolt (3) extends outward from the surface of the conductor (2). The knob (4) is fitted onto the tail of the shank of the bolt (3) and is connected to the bolt (3) by threaded engagement.

2. The novel terminal block structure according to claim 1, characterized in that: The knob (4) is integrally formed from insulating material, and the outer surface of the knob (4) is provided with anti-slip texture (43).

3. The novel terminal block structure according to claim 1, characterized in that: The bottom of the knob (4) is provided with an annular crimping surface (42), which is configured to form a surface contact with the contact surface of the end of the wire.

4. The novel terminal block structure according to claim 1, characterized in that, The mechanical fixing method is either snap-fit ​​or injection molding: When a snap-fit ​​is used, the conductor (2) is provided with a barb structure (21), and the insulating base (1) is provided with a slot (11) adapted to the barb structure (21); When injection molding is used for fixing, the conductor (2) is embedded in the injection molding material of the insulating base (1).

5. The novel terminal block structure according to claim 1, characterized in that, The mechanical fixing method is riveting fixing: the conductor (2) is provided with a pin (22), the insulating base (1) is provided with a mounting hole (12), the pin (22) passes through the mounting hole (12) and is folded over to form a rolled edge structure that is pressed against the periphery of the mounting hole (12).

6. The novel terminal block structure according to claim 4 or 5, characterized in that: The mechanical fixing method is any combination of snap-fit, injection molding, and riveting.

7. The novel terminal block structure according to claim 1, characterized in that: The bolt (3) has an external thread section (31) at the tail end of the shank, and the knob (4) has an internal thread sleeve section (41) that is adapted to the external thread section (31), and the length of the external thread section (31) is greater than the axial length of the internal thread sleeve section (41).

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