Magnetic type hinge four-bar mechanism teaching aid

Abstract

The utility model discloses a magnetic type hinge four-bar mechanism teaching aid which comprises an adjusting bottom box, a driving rod, a connecting rod and a side link, one end of the driving rod and one end of the side link are hinged to the adjusting bottom box, and the other end of the driving rod and the other end of the side link are hinged to the two ends of the connecting rod respectively. The adjusting and mounting bottom box, the driving rod, the connecting rod and the frame connecting rod are matched to form four hinged ends, a driving assembly for driving the driving rod to rotate forwards and backwards is arranged in the adjusting and mounting bottom box, magnetic attraction assemblies are arranged at the four hinged ends respectively, and each magnetic attraction assembly comprises two magnets which attract each other. The action of the four-bar mechanism is realized through the driving assembly, accessories can be quickly installed and replaced by adopting a magnetic attraction structure, and different mechanism types are combined and demonstrated.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching aids, in particular to a magnetic-attraction hinge four-bar mechanism teaching aid. Background Art

[0002] The knowledge of hinged four-bar mechanisms is often abstract and boring, but through intuitive and visual teaching aids, students can more easily grasp their basic principles. For example, the three basic types of hinged four-bar mechanisms are essential for students to memorize, but the traditional "rote memorization" method does not suit the learning characteristics of secondary vocational students. Therefore, in this lesson, by assembling teaching aids and observing operations, students are encouraged to shift from passively accepting knowledge to exploring it through practice, effectively grasping the key points of the lesson.

[0003] Existing four-bar mechanism teaching aids can present various types of hinged four-bar mechanisms by adjusting the base and assembling them with rods of different lengths. When teaching hinged four-bar mechanisms, it is often necessary to change the combination of rods to demonstrate different mechanism types and working characteristics. However, traditional physical teaching aids require the disassembly and assembly of hinges during the process of changing combinations. This process is time-consuming, easily distracts students, and reduces classroom teaching efficiency. In addition, traditional hinged four-bar mechanism physical teaching aids are mostly manual models. During operation, the position and angle of each rod need to be manually adjusted. The operation process is cumbersome and prone to errors. This not only increases the difficulty of learning for students, but also affects their observation and exploration of mechanism types and working characteristics. It also brings inconvenience to teachers' knowledge points. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a magnetic hinge four-bar mechanism teaching aid.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic hinged four-bar mechanism teaching aid, comprising an adjusting base box, an active rod, a connecting rod and a connecting rod, one end of the active rod and the connecting rod is hinged to the adjusting base box, and the other ends of the active rod and the connecting rod are respectively hinged to the two ends of the connecting rod, the adjusting base box, the active rod, the connecting rod and the connecting rod cooperate to form four hinged ends, a driving assembly for driving the active rod to rotate forward and reverse is provided in the adjusting base box, and magnetic components are respectively provided at the four hinged ends, and each magnetic component includes two magnets that attract each other.

[0006] As a preferred technical solution of the present invention, two mounting holes are correspondingly provided at the hinged ends of the adjusting base box, active rod, connecting rod and connecting frame rod, and the two magnets of the magnetic attraction assembly are respectively located in the corresponding mounting holes, one end of which has a protruding portion located outside the mounting hole, and the other magnet is confined in the mounting hole and a slot for the protruding portion to enter is formed between the end face of the magnet facing the protruding portion and the inner wall of the mounting hole.

[0007] As a preferred technical solution of the present invention, a rotating shaft is provided at one end of the adjusting base box corresponding to the active rod, and the rotating shaft is at least partially located outside the adjusting base box, the rotating shaft is driven by a motor, a mounting hole is provided on the outer end surface of the rotating shaft, the magnet is embedded in the mounting hole and the magnet is lower than the outer end surface of the mounting hole, a mounting hole is provided at one end of the active rod connected to the rotating shaft, and a magnet is embedded in the mounting hole, and the protruding part of the magnet located at one end of the active rod corresponds to the magnet at one end of the rotating shaft.

[0008] As a preferred technical solution of the present invention, the outer end surface of the rotating shaft is provided with a plurality of plug-in parts along the circumferential direction around the mounting hole, and the active rod is provided with a plurality of sockets that cooperate with the plug-in parts.

[0009] As an optimal technical solution of the present invention, the adjusting base box is provided with a mounting portion at one end corresponding to the connecting rod, and the outer end surface of the mounting portion is flush with the outer end surface of the rotating shaft, the outer end surface of the mounting portion is provided with a mounting hole, the magnet is embedded in the mounting hole, and the magnet has a protruding portion located outside the mounting hole, the end of the connecting rod connected to the mounting portion is provided with a mounting hole, and a magnet is embedded in the mounting hole, and the end surface of the magnet located at one end of the connecting rod facing the mounting portion is lower than the outer end surface of the mounting hole at the connecting rod.

[0010] As a preferred technical solution of the present invention, the driving assembly includes a motor, a circuit board, an adjustment knob, a mode switch, a power switch and a battery, and the motor drives the active rod to rotate.

[0011] As a preferred technical solution of the present invention, the adjusting knob and the mode switch are electrically connected to the circuit board and both are located at the upper end of the adjusting base box. The adjusting base box is provided with a through hole for the adjusting knob and the mode switch to pass through.

[0012] As a preferred technical solution of the present invention, the power switch is electrically connected to the circuit board and is located on the side wall of the mounting base box.

[0013] As a preferred technical solution of the present invention, a placement slot for installing batteries is provided in the adjusting bottom box.

[0014] As a preferred technical solution of the present invention, the battery has a charging interface.

[0015] In summary, the present invention has the following beneficial effects: The automatic motor drive design simplifies the operation steps, allowing students to observe the motion of the mechanism without manually rotating the rods. Furthermore, the rods are assembled via magnetic assemblies, allowing for quick replacement of rods of different sizes, enabling rapid positioning and demonstration of different mechanism types. These mechanisms can be categorized as crank-rocker mechanisms, double-crank mechanisms, and double-rocker mechanisms. In this application, the crank refers to a rod capable of a full rotation, and the rocker refers to a rod capable of reciprocating swing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of the bottom box in the utility model;

[0018] Figure 3 yes Figure 2 Enlarged view of part A;

[0019] Figure 4 This is a schematic diagram of the structure of the active rod, connecting rod and connecting rod of the utility model;

[0020] Figure 5 It is a structural diagram of the coordination of the motor and the rotating shaft in the utility model.

[0021] Figure numerals: 1. Adjusting base box; 2. Active rod; 3. Connecting rod; 4. Connecting rod; 5. Hinge end; 6. Driving assembly; 7. Magnetic assembly; 8. Magnet; 9. Mounting hole; 10. Protruding part; 11. Slot; 12. Rotating shaft; 13. Connecting part; 14. Socket; 15. Mounting part; 16. Motor; 17. Circuit board; 18. Adjustment knob; 19. Mode switch; 20. Power switch; 21. Battery; 22. Through hole; 23. Placement slot; 24. Charging port. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0023] The specific embodiments of the present utility model are described below with reference to the accompanying drawings.

[0024] like Figure 1-5The shown teaching aid is a magnetic hinged four-bar mechanism, comprising an adjusting base box 1, an active rod 2, a connecting rod 3 and a connecting rod 4. One end of the active rod 2 and the connecting rod 4 is hinged to the adjusting base box 1, and the other ends of the active rod 2 and the connecting rod 4 are hinged to the two ends of the connecting rod 3 respectively. The adjusting base box 1, the active rod 2, the connecting rod 3 and the connecting rod 4 cooperate to form four hinged ends 5. A driving assembly 6 for driving the active rod 2 in forward and reverse rotation is provided in the adjusting base box 1. Magnetic components 7 are respectively provided at the four hinged ends 5. Each magnetic component 7 includes two mutually attracted magnets 8. The rod members in this embodiment are preferably made of polylactide material, but other materials can also be used according to user needs.

[0025] The automatic motor 16 drive design simplifies the operation steps. Students can observe the movement state of the mechanism without manually rotating the rods. In addition, the rods are assembled through the magnetic suction assembly 7, and rods of different sizes can be quickly replaced to achieve rapid positioning and demonstrate different mechanism types. The mechanism types can be divided into crank rocker mechanism, double crank mechanism, and double rocker mechanism. The crank in this application refers to the rod that can make a full cycle of operation, and the rocker refers to the rod that makes reciprocating swings. The type provided in the attached figure is a crank rocker mechanism. You only need to replace rods of different sizes to change the mechanism type. Figure 1 The active rod 2 is a crank that performs circular motion, and the connecting rod 4 is a rocker that performs reciprocating swing.

[0026] Two mounting holes 9 are correspondingly provided at the hinged ends 5 of the adjusting base box 1, the active rod 2, the connecting rod 3 and the connecting rod 4. The two magnets 8 of the magnetic attraction assembly 7 are respectively located in the corresponding mounting holes 9. One end of one magnet 8 has a protruding portion 10 located outside the mounting hole 9, and the other magnet 8 is limited to the mounting hole 9 and a slot 11 for the protruding portion 10 to enter is formed between the end face of the magnet 8 facing the protruding portion 10 and the inner wall of the mounting hole 9. This plug-in form can quickly achieve positioning, so that the two magnets 8 are attracted face to face.

[0027] The adjusting bottom box 1 is provided with a rotating shaft 12 at one end corresponding to the active rod 2, and the rotating shaft 12 is at least partially located outside the adjusting bottom box 1. The rotating shaft 12 is driven by the motor 16. The outer end surface of the rotating shaft 12 is provided with a mounting hole 9, and the magnet 8 is embedded in the mounting hole 9 and the magnet 8 is lower than the outer end surface of the mounting hole 9. The end of the active rod 2 connected to the rotating shaft 12 is provided with a mounting hole 9 and the mounting hole 9 is embedded with a magnet 8. The protruding portion 10 of the magnet 8 at one end of the active rod 2 corresponds to the magnet 8 at one end of the rotating shaft 12. It can also be the lower The surface is set up in such a way that the magnet 8 at the outer end of the rotating shaft 12 is lower than the mounting hole 9 to form a slot 11, and the protruding portion 10 of the magnet 8 in the mounting hole 9 of the active rod 2 is located outside the mounting hole 9. The protruding portion 10 of the magnet 8 only represents the portion of the magnet 8 outside the mounting hole 9. By adjusting the thickness of the magnet 8 or the length of the mounting hole 9, the magnet 8 can be made lower than the mounting hole 9 or part of the magnet 8 can be made outside the mounting hole 9. The connection method between the two ends of the connecting rod 3 and the connecting rod 4 and the active rod 2 can also adopt the above two methods.

[0028] The outer end surface of the rotating shaft 12 is provided with multiple plug-in parts 13 along the circumferential direction around the mounting hole 9, and the active rod 2 is provided with multiple sockets 14 that cooperate with the plug-in parts 13. The active rod 2 can move with the rotating shaft 12 to avoid dislocation and separation when the two move.

[0029] The adjusting base box 1 is provided with a mounting portion 15 at one end corresponding to the connecting rod 4, and the outer end surface of the mounting portion 15 is flush with the outer end surface of the rotating shaft 12, and a mounting hole 9 is opened on the outer end surface of the mounting portion 15, the magnet 8 is embedded in the mounting hole 9, and the magnet 8 has a protruding portion 10 located outside the mounting hole 9. The connecting rod 4 is provided with a mounting hole 9 at one end connected to the mounting portion 15, and a magnet 8 is embedded in the mounting hole 9. The end surface of the magnet 8 at one end of the connecting rod 4 facing the mounting portion 15 is lower than the outer end surface of the mounting hole 9 at the connecting rod 4; it can also be set up in the following way, that is, the magnet 8 in the mounting hole 9 of the mounting portion 15 is lower than the outer end surface of the mounting hole 9 to form a slot 11, and the magnet 8 in the mounting hole 9 of the connecting rod 4 is lower than the outer end surface of the mounting hole 9, and the protruding portion 10 of the magnet 8 only represents the part of the magnet 8 placed outside the mounting hole 9. By adjusting the thickness of the magnet 8 or the length of the mounting hole 9, the magnet 8 can be made lower than the mounting hole 9 or the magnet 8 can be made partially outside the mounting hole 9.

[0030] The drive assembly 6 includes a motor 16, a circuit board 17, an adjustment knob 18, a mode switch 19, a power switch 20 and a battery 21 with a charging interface 24. The motor 16 drives the active rod 2 to rotate. The adjustment knob 18 and the mode switch 19 are electrically connected to the circuit board 17 and both are located at the upper end of the adjusting base box 1. The adjusting base box 1 is provided with a through hole 22 for the adjustment knob 18 and the mode switch 19 to pass through. The power switch 20 is electrically connected to the circuit board 17 and the power switch 20 is located on the side wall of the adjusting base box 1. A placement slot 23 for installing the battery 21 is provided in the adjusting base box 1. In this embodiment, the adjustment knob 18 can control the forward and reverse rotation and speed of the motor 16, and the mode switch 19 can adjust the motion mode. The control circuit for how to realize the action and switch the mode is not an improvement point of the present application. This is a prior art and therefore will not be elaborated in detail.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention as claimed, and the scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic hinged four-bar mechanism teaching aid, comprising an adjusting base box (1), an active rod (2), a connecting rod (3) and a connecting rod (4), wherein one end of the active rod (2) and the connecting rod (4) are hinged to the adjusting base box (1), and the other ends of the active rod (2) and the connecting rod (4) are hinged to the two ends of the connecting rod (3) respectively; the adjusting base box (1), the active rod (2), the connecting rod (3) and the connecting rod (4) cooperate to form four hinged ends (5), characterized in that: A driving assembly (6) for driving the active rod (2) to rotate forward and reverse is provided in the adjusting bottom box (1), and magnetic attraction components (7) are respectively provided at the four hinged ends (5), and each magnetic attraction component (7) includes two magnets (8) that attract each other.

2. The magnetic hinge four-bar mechanism teaching aid according to claim 1, characterized in that: Two mounting holes (9) are correspondingly provided at the hinged ends (5) of the adjusting base box (1), the active rod (2), the connecting rod (3) and the connecting rod (4); the two magnets (8) of the magnetic attraction assembly (7) are respectively located in the corresponding mounting holes (9); one end of one magnet (8) has a protruding portion (10) located outside the mounting hole (9); the other magnet (8) is limited in the mounting hole (9) and a slot (11) for the protruding portion (10) to enter is formed between the end surface of the magnet (8) facing the protruding portion (10) and the inner wall of the mounting hole (9).

3. The magnetic hinge four-bar mechanism teaching aid according to claim 2, characterized in that: The adjusting base box (1) is provided with a rotating shaft (12) at one end corresponding to the active rod (2), and the rotating shaft (12) is at least partially located outside the adjusting base box (1). The rotating shaft (12) is driven by a motor (16). The outer end surface of the rotating shaft (12) is provided with a mounting hole (9), the magnet (8) is embedded in the mounting hole (9), and the magnet (8) is lower than the outer end surface of the mounting hole (9). The end of the active rod (2) connected to the rotating shaft (12) is provided with a mounting hole (9), and the magnet (8) is embedded in the mounting hole (9). The protruding portion (10) of the magnet (8) located at one end of the active rod (2) corresponds to the magnet (8) at one end of the rotating shaft (12).

4. The magnetic hinge four-bar mechanism teaching aid according to claim 3, characterized in that: The outer end surface of the rotating shaft (12) is provided with a plurality of plug-in parts (13) along the circumferential direction around the mounting hole (9), and the active rod (2) is provided with a plurality of sockets (14) matched with the plug-in parts (13).

5. The magnetic hinge four-bar mechanism teaching aid according to claim 3, characterized in that: The adjusting base box (1) is provided with a mounting portion (15) at one end corresponding to the connecting rod (4), and the outer end surface of the mounting portion (15) is flush with the outer end surface of the rotating shaft (12); the outer end surface of the mounting portion (15) is provided with a mounting hole (9); the magnet (8) is embedded in the mounting hole (9), and the magnet (8) has a protruding portion (10) located outside the mounting hole (9); the end of the connecting rod (4) connected to the mounting portion (15) is provided with a mounting hole (9), and the magnet (8) is embedded in the mounting hole (9); the end surface of the magnet (8) at one end of the connecting rod (4) facing the mounting portion (15) is lower than the outer end surface of the mounting hole (9) at the connecting rod (4).

6. The magnetic hinge four-bar mechanism teaching aid according to any one of claims 1 to 5, characterized in that: The driving assembly (6) comprises a motor (16), a circuit board (17), an adjustment knob (18), a mode switch (19), a power switch (20) and a battery (21), and the motor (16) drives the active rod (2) to rotate.

7. The magnetic hinge four-bar mechanism teaching aid according to claim 6, characterized in that: The adjusting knob (18) and the mode switch (19) are electrically connected to the circuit board (17) and are both located at the upper end of the adjusting base box (1). The adjusting base box (1) is provided with a through hole (22) for the adjusting knob (18) and the mode switch (19) to pass through.

8. The magnetic hinge four-bar mechanism teaching aid according to claim 6, characterized in that: The power switch (20) is electrically connected to the circuit board (17) and is located on a side wall of the mounting base box (1).

9. The magnetic hinge four-bar mechanism teaching aid according to claim 6, characterized in that: A placement slot (23) for installing a battery (21) is provided in the adjustment bottom box (1).

10. The magnetic hinge four-bar mechanism teaching aid according to claim 6, characterized in that: The battery (21) has a charging interface (24).

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