Circuit connection teaching aid with anti-loosening structure

Abstract

The utility model discloses a circuit connection teaching aid with anti -loose structure, including base and mounting seat, the inner wall of base is installed with first screw rod and second screw rod, and the outer wall of first screw rod and second screw rod is respectively screwed with first nut and second nut, and the bottom of first nut is provided with conducting iron wire, and the one end of conducting iron wire away from first nut is installed in mounting seat, and the bottom of second nut is provided with conducting sheet, and the one end of conducting sheet away from second nut is embedded in mounting seat, the top of first nut is provided with binding post, and the inner wall of binding post is fixedly installed with third nut, and third nut is screwed on the outer wall of first screw rod. When working, through rotating binding post and moving to the top of first nut, it is compressed tightly, forms a physical barrier to eliminate the possibility that the student inadvertently touches first nut and leads to its rotation loose, helps to ensure the experimental conclusion and teaching effect.

Description

Technical Field

[0001] This utility model relates to the field of electrical demonstration device technology, specifically a circuit connection teaching aid with an anti-loosening structure. Background Technology

[0002] In the teaching practice of physics electricity, circuit connection experiments are an important teaching link to guide students to master core knowledge such as Ohm's law, the characteristics of series and parallel circuits, and the working principle of sensors. Such experiments usually require the use of basic circuit connection teaching aids, which generally include power supply modules, control switches, connecting wires, load devices (such as small light bulbs and miniature motors), and various functional components (such as fixed resistors, capacitors, and photoresistors).

[0003] Currently, most mainstream traditional circuit connection teaching aids adopt a screw-nut crimping wire connection structure. Specifically, this structure usually includes a metal stud fixed on an insulating base, and the end of the wire is pressed by a nut screwed onto the stud through a metal washer, thereby establishing an electrical connection path;

[0004] However, in practical teaching applications, especially in environments like primary and secondary school classrooms where the equipment is used frequently and most operators are beginners, students often pull or bump the wires laterally when connecting them, causing slight radial movement and loosening the nut. A loose nut leads to poor contact and increased resistance, thus affecting experimental conclusions and teaching effectiveness. Utility Model Content

[0005] The purpose of this invention is to provide a circuit connection teaching aid with an anti-loosening structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a circuit connection teaching aid with an anti-loosening structure, comprising a base and a mounting base. A first screw and a second screw are installed on the inner wall of the base. A first nut and a second nut are threadedly connected to the outer walls of the first screw and the second screw, respectively. A conductive iron wire is provided at the bottom of the first nut, and the end of the conductive iron wire away from the first nut is installed in the mounting base. A conductive plate is provided at the bottom of the second nut, and the end of the conductive plate away from the second nut is embedded in the mounting base.

[0007] The top of the first nut is provided with a terminal post, and a third nut is fixedly installed on the inner wall of the terminal post. The third nut is threaded onto the outer wall of the first screw.

[0008] As a further preferred embodiment of this technical solution, a positioning groove is provided on the top of the base, and the conductive sheet is located in the positioning groove.

[0009] As a further preferred embodiment of this technical solution, the bottom of the mounting base is provided with an opening for embedding a conductive sheet.

[0010] As a further preferred embodiment of this technical solution, a fixing rod is fixedly installed at the bottom of the base, and a fixing head is fixedly installed on the outer wall of the fixing rod.

[0011] As a further preferred embodiment of this technical solution, the diameter of the terminal block is smaller than the depth of the inner cavity at the bottom of the base.

[0012] This utility model provides a circuit connection teaching tool with an anti-loosening structure, which has the following beneficial effects:

[0013] (1) This utility model uses a terminal block to press the first nut to limit its position. When working, firstly, one end of the conductive iron wire is installed into the mounting base and the other end of the conductive iron wire is sleeved on the outer wall of the first screw, and then it is pressed by the first nut; then the conductive sheet is sleeved on the outer wall of the second screw, and it is pressed by the second nut; then the terminal block is rotated to move to the top of the first nut and press it, forming a physical barrier, thereby eliminating the possibility that students may accidentally touch the first nut and cause it to rotate and loosen, which helps to ensure the experimental conclusions and teaching effects.

[0014] (2) This utility model limits the terminal block by fixing the head. When the teaching aid is not used, the terminal block can be put on the outer wall of the fixing head. This not only prevents loss and achieves standardized storage, but also avoids damage to the terminal block during transportation and collision, and extends its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the bottom of the base of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the base of this utility model;

[0018] Figure 4 This is a schematic diagram of the opening structure of this utility model.

[0019] In the diagram: 1. Base; 2. Mounting base; 3. First screw; 4. Second screw; 5. First nut; 6. Conductive sheet; 7. Conductive wire; 8. Second nut; 9. Terminal; 10. Third nut; 11. Positioning groove; 12. Opening; 13. Fixing rod; 14. Fixing head. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: such as Figures 1 to 4 As shown in this embodiment, a circuit connection teaching aid with an anti-loosening structure includes a base 1 and a mounting base 2. A first screw 3 and a second screw 4 are installed on the inner wall of the base 1. A first nut 5 and a second nut 8 are threadedly connected to the outer walls of the first screw 3 and the second screw 4, respectively. A conductive iron wire 7 is provided at the bottom of the first nut 5. The end of the conductive iron wire 7 away from the first nut 5 is installed in the mounting base 2. A conductive plate 6 is provided at the bottom of the second nut 8. The end of the conductive plate 6 away from the second nut 8 is embedded in the mounting base 2.

[0022] The top of the first nut 5 is provided with a terminal post 9, and the inner wall of the terminal post 9 is fixedly installed with a third nut 10, which is threaded onto the outer wall of the first screw 3.

[0023] The base 1, mounting base 2 and terminal 9 are made of plastic, while the first screw 3, second screw 4, first nut 5, conductive sheet 6, conductive wire 7 and second nut 8 are made of metal.

[0024] During operation, first install one end of the conductive iron wire 7 into the mounting base 2 and then fit the other end of the conductive iron wire 7 onto the outer wall of the first screw 3, and tighten it with the first nut 5;

[0025] Then the conductive sheet 6 is fitted onto the outer wall of the second screw 4 and pressed tightly by the second nut 8;

[0026] Then rotate terminal 9 to move it to the top of the first nut 5 and press it down to form a physical barrier, thereby eliminating the possibility that students may accidentally touch the first nut 5 and cause it to rotate and loosen, which helps to ensure the experimental conclusions and teaching effectiveness.

[0027] like Figures 1 to 3 As shown, a positioning groove 11 is provided on the top of the base 1, and the conductive sheet 6 is located in the positioning groove 11.

[0028] The length between the two sides of the positioning groove 11 is the same as the length between the two ends of the conductive sheet 6. During installation, the conductive sheet 6 is positioned by fitting one side of the conductive sheet 6 against the inner side of the positioning groove 11, and a specific reference plane is selected in the horizontal direction.

[0029] In order to position the conductive sheet 6, the traditional teaching aid has a positioning groove 11 with the same size as the conductive sheet 6. During installation, the conductive sheet 6 must be aligned with the positioning groove 11 to be positioned.

[0030] The depth of the positioning groove 11 is greater than the width of the conductive sheet 6. This method expands the depth of the positioning groove 11, which greatly improves the assembly speed and quality consistency while retaining the original positioning advantages.

[0031] like Figure 4 As shown, the bottom of the mounting base 2 has an opening 12 for inserting the conductive sheet 6.

[0032] The width of the opening 12 is greater than the width of the conductive sheet 6, and the opening 12 is positioned on the side facing the positioning groove 11.

[0033] When installing the conductive sheet 6, one end of the conductive sheet 6 can be first fitted onto the outer wall of the second screw 4, and then the other end of the conductive sheet 6 can be rotated into the mounting base 2, thereby expanding the installation angle of the conductive sheet 6.

[0034] In traditional teaching aids, the mounting base 2 usually has a mounting groove at the bottom that is the same width as or slightly larger than that of the conductive sheet 6. When installing the conductive sheet 6, one end of the conductive sheet 6 needs to be inserted into the mounting groove first, and then the second screw 4 and the second nut 8 are installed. The installation method is limited. This patent, through the large-range opening 12 of the opening 12, not only has multiple installation methods, but also improves the convenience of operation.

[0035] like Figure 2 As shown, a fixing rod 13 is fixedly installed at the bottom of the base 1, and a fixing head 14 is fixedly installed on the outer wall of the fixing rod 13.

[0036] The end of the fixing head 14 away from the fixing rod 13 is tapered. The tapered inlet can easily guide the device, and it can be put on smoothly even if it is slightly misaligned, which is very user-friendly for primary and secondary school students.

[0037] The fixing head 14 is elastically designed, and the inner diameter of the fixing head 14 is slightly larger than the inner diameter of the terminal 9. It uses the friction of the elastic material to achieve a stable connection and is not easy to fall off on its own. At the same time, since it is an elastic body, it can be easily pulled off by hand without effort.

[0038] When not using the teaching aids, the terminal block 9 can be fitted onto the outer wall of the fixing head 14. This not only prevents loss and achieves standardized storage, but also avoids damage to the terminal block 9 during transportation and collisions, thus extending its service life.

[0039] Multiple sets of fixing rods 13 and fixing heads 14 can be provided, which can not only store the terminal 9, but also other items, such as the first nut 5 and the second nut 8.

[0040] like Figures 1 to 3 As shown, the diameter of terminal 9 is smaller than the depth of the inner cavity at the bottom of base 1.

[0041] When the terminal 9 is installed on the outer wall of the fixing head 14, the base 1 forms a enclosure around its bottom, protecting the terminal 9. This enclosure provides a dedicated, protected housing space for the terminal 9.

[0042] This utility model provides a circuit connection teaching tool with an anti-loosening structure, the specific working principle of which is as follows:

[0043] During operation, first install one end of the conductive iron wire 7 into the mounting base 2 and then fit the other end of the conductive iron wire 7 onto the outer wall of the first screw 3, and tighten it with the first nut 5;

[0044] Then the conductive sheet 6 is fitted onto the outer wall of the second screw 4 and pressed tightly by the second nut 8;

[0045] Then rotate terminal 9 to move it to the top of the first nut 5 and press it down to form a physical barrier, thereby eliminating the possibility that the student may accidentally touch the first nut 5 and cause it to rotate and loosen.

[0046] When it is necessary to store the terminal 9, the terminal 9 is placed on the outer wall of the fixing head 14. This not only prevents loss and achieves standardized storage, but also avoids damage to the terminal 9 during transportation and collision, thus extending its service life.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit connection teaching aid with an anti-loosening structure, comprising a base (1) and a mounting base (2), characterized in that: The inner wall of the base (1) is equipped with a first screw (3) and a second screw (4). The outer walls of the first screw (3) and the second screw (4) are respectively threaded with a first nut (5) and a second nut (8). The bottom of the first nut (5) is provided with a conductive iron wire (7). The end of the conductive iron wire (7) away from the first nut (5) is installed in the mounting base (2). The bottom of the second nut (8) is provided with a conductive plate (6). The end of the conductive plate (6) away from the second nut (8) is embedded in the mounting base (2). The top of the first nut (5) is provided with a terminal post (9), and a third nut (10) is fixedly installed on the inner wall of the terminal post (9). The third nut (10) is threaded onto the outer wall of the first screw (3).

2. The circuit connection teaching aid with an anti-loosening structure according to claim 1, characterized in that: The base (1) has a positioning groove (11) on its top, and the conductive sheet (6) is located in the positioning groove (11).

3. The circuit connection teaching aid with an anti-loosening structure according to claim 1, characterized in that: The bottom of the mounting base (2) has an opening (12) for inserting the conductive sheet (6).

4. The circuit connection teaching aid with an anti-loosening structure according to claim 1, characterized in that: A fixing rod (13) is fixedly installed at the bottom of the base (1), and a fixing head (14) is fixedly installed on the outer wall of the fixing rod (13).

5. A circuit connection teaching aid with an anti-loosening structure according to claim 1, characterized in that: The diameter of the terminal block (9) is smaller than the depth of the inner cavity at the bottom of the base (1).

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