Sphere motion demonstrator

Abstract

The utility model relates to the technical field of teaching aids, in particular to a sphere motion demonstrator, which comprises a panel, a guide plate group is arranged on the panel, the outer side of the guide plate group is connected with a transmitting device, the guide plate group comprises a plurality of arc-shaped guide plates, and two ends of the guide plate group are respectively an outlet end and an inlet end; a connecting opening is formed between the outlet end and the inlet end, one arc-shaped guide plate adjacent to the connecting opening serves as a first unit, the arc-shaped guide plate adjacent to the first end of the first unit serves as a third unit, and the other arc-shaped guide plates serve as second units; the launching device is provided with an ejection channel, the ejection channel is provided with an ejection cavity, a ball is arranged in the ejection cavity, the third unit and the second units are detachably connected with the panel, and a first receiving groove is formed in the extension line of the ejection channel. Second receiving grooves are formed in the tangential extension lines of the second ends of the second units in a one-to-one correspondence mode. After the technical scheme is adopted, during use, the movement direction of the ball can be conveniently and intuitively reflected.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, specifically to a ball motion demonstrator. Background Technology

[0002] Students can easily understand the basic conclusions related to the motion of a sphere from the textbook, but they may be ambiguous when analyzing some concepts. Therefore, teachers need to use simple demonstration experiments to show students in new lessons how objects with curvilinear motion move.

[0003] Most existing experiments on the motion of a ball record the trajectory of the steel ball using carbon paper or ink to record the experimental phenomenon. However, the trajectory left by carbon paper is not clear. Another common experimental method is to first dip the steel ball in a large amount of ink before conducting the experiment. However, during the experiment, on the one hand, the ink inevitably splashes everywhere, easily staining the white paper. On the other hand, the ink adhering to the surface of the steel ball is uneven, causing the steel ball to rotate or wobble irregularly when rolling, resulting in an unstable trajectory and making it impossible to intuitively show the direction of the ball's motion.

[0004] In view of this, the applicant has conducted in-depth research on the above-mentioned issues, which led to this case. Utility Model Content

[0005] The purpose of this invention is to provide a ball motion demonstrator that can easily and intuitively demonstrate the direction of ball motion.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A spherical curvilinear motion demonstrator includes a horizontally arranged panel, on which a guide plate assembly is provided to enclose and form a first space; a launching device is provided on the outside of the guide plate assembly.

[0008] The guide plate assembly includes multiple arc-shaped guide plates, one end of each arc-shaped guide plate is a first end, and the other end of each arc-shaped guide plate is a second end. The arc-shaped guide plates are arranged in a C-shape and each arc-shaped guide plate protrudes in a direction away from the central axis of the guide plate assembly.

[0009] The guide plate assembly has an outlet end and an inlet end at its two ends, respectively; a connection port is formed between the outlet end and the inlet end;

[0010] One of the arc-shaped guide plates adjacent to the connection port is designated as the first unit, and the second end of the first unit is designated as the outlet end. The arc-shaped guide plate adjacent to the first end of the first unit is designated as the third unit, and the remaining arc-shaped guide plates are designated as second units. The first end of the second unit adjacent to the connection port is designated as the inlet end.

[0011] The launching device is provided with an ejection channel, one end of which is connected to the first space through the connector, and the other end of which has an ejection cavity containing a ball.

[0012] The second end of each of the second units is connected to the first end of the arc-shaped guide plate adjacent to the second end of the second unit; the second end of the third unit is connected to the first end of the first unit;

[0013] The third unit and each of the second units are detachably connected to the panel. A first receiving slot is provided on the extension line of the end of the ejection channel that communicates with the first space. A second receiving slot is provided on the tangential extension line of the second end of each of the second units. The first receiving slot and each of the second receiving slots are respectively installed on the panel.

[0014] Each of the second receiving slots has a first slot wall and a second slot wall arranged opposite to each other, and each of the first slot walls and each of the second slot walls are arranged vertically; each of the first slot walls is coplanar with the tangent of the second end of the corresponding second unit; in the same second receiving slot, the central axis of the second slot wall and the guide plate assembly is located on the same side of the plane where the first slot wall is located.

[0015] Preferably, the tangent at the second end of each of the second units coincides with the tangent at the first end of the arc-shaped guide plate connected to the second end of the second unit;

[0016] The tangent at the second end of the third unit coincides with the tangent at the first end of the first unit.

[0017] Preferably, the horizontal cross-sectional profile of the guide plate assembly is arc-shaped, and the panel is provided with an annular inner guide plate within the area enclosed by the guide plate assembly; the annular inner guide plate is coaxially arranged with the guide plate assembly.

[0018] Preferably, the panel is further provided with a plurality of photoelectric door sensors arranged along the guide plate group;

[0019] Each of the aforementioned photoelectric gate sensors includes a transmitter and a receiver;

[0020] In the same photoelectric gate sensor, the transmitting end and the receiving end are located on the same radial direction of the guide plate group, the transmitting end is located on the side of the guide plate group away from the inner annular guide plate, and the receiving end is located on the side of the inner annular guide plate away from the guide plate group;

[0021] The guide plate assembly has a plurality of first light-passing holes, and the annular inner guide plate has a plurality of second light-passing holes. Each first light-passing hole corresponds to each of the transmitting ends, and each first light-passing hole and the corresponding transmitting end are located on the same radial direction of the guide plate assembly. Each second light-passing hole corresponds to each of the receiving ends, and each second light-passing hole and the corresponding receiving end are located on the same radial direction of the guide plate assembly.

[0022] Preferably, each of the arc-shaped guide plates and the annular inner guide plate is provided with a pressure sensor group corresponding to each other. Each pressure sensor group includes a first flexible thin film pressure sensor fixed on the corresponding arc-shaped guide plate and a second flexible thin film pressure sensor fixed on the annular inner guide plate.

[0023] In the same pressure sensor group, the first flexible film pressure sensor and the second flexible film pressure sensor are arranged correspondingly.

[0024] Preferably, the panel has a first recess at a position corresponding to the first receiving slot;

[0025] The panel has a second sink groove at a position corresponding to each of the second receiving slots.

[0026] Preferably, the first sink and each of the second sinks are respectively embedded with magnets, and the upper surface of each magnet is flush with the upper surface of the panel.

[0027] Preferably, the launching device includes a vertically arranged mounting plate and a first side plate and a second side plate disposed on the same side of the mounting plate; the first side plate and the second side plate are arranged opposite to each other and form the ejection channel between them;

[0028] One end of the first side plate is connected to the inlet end, and the other end of the first side plate is connected to the mounting plate and has a first movable opening. A first elastic plate is provided in the first movable opening.

[0029] One end of the second side plate is connected to the outlet end, and the other end of the second side plate is connected to the mounting plate and has a second movable opening, in which a second elastic plate is provided;

[0030] The first elastic plate and the second elastic plate are respectively fixed on the mounting plate. The first elastic plate and the second elastic plate have wedge-shaped blocks formed at the ends away from the mounting plate, and the two wedge-shaped blocks are arranged facing each other.

[0031] A push head is horizontally slidably inserted into the mounting plate, and the push head is located between the first elastic plate and the second elastic plate;

[0032] The push head, the first elastic plate, and the second elastic plate together form the ejection cavity, and the opening of the ejection cavity faces the first space.

[0033] Preferably, the outer periphery of the panel is further provided with a stiffening plate.

[0034] Preferably, a matrix pressure sensor is provided at the upper end of the panel.

[0035] After adopting the above technical solution, by detachably connecting the third unit and each of the second units to the panel, and setting a first receiving groove on the extension line of the end of the ejection channel that connects to the first space, and setting a second receiving groove on the tangential extension line of the second end of each of the second units, the third unit and each of the second units are defined as detachable units. In use, when the detachable unit connected to the ejection channel is detached from the panel and the ball is ejected, if the ball moves along the extension line of the end of the ejection channel that connects to the first space into the first receiving groove, the direction of the ball's movement after leaving the ejection channel without being affected by the guide plate group can be intuitively shown; when the detachable unit connected to the second end of one of the second units is detached from the panel and the ball is ejected, when the ball leaves the guide plate group and moves along the tangential extension line of the second end of the second unit into the second receiving groove corresponding to the second unit, the direction of the ball's movement at the position of the second end of the second unit can be more intuitively shown.

[0036] A pressure sensor array is installed between the arc-shaped guide plate and the annular inner guide plate to detect the pressure exerted by the ball on the arc-shaped guide plate and the annular inner guide plate during its movement.

[0037] The speed of the ball is measured by several photoelectric gate sensors arranged along the guide plate group on the panel.

[0038] By creating a first sinking groove at the position corresponding to the first receiving groove on the panel, and creating second sinking grooves at the positions corresponding to each of the second receiving grooves on the panel, defining the first receiving groove and each of the second receiving grooves as receiving grooves, the ball falls into the sinking groove after entering the receiving groove, increasing the difficulty for the ball to bounce out of the receiving groove and effectively reducing the speed of the ball, thus keeping the ball in the receiving groove.

[0039] By embedding magnets in the first settling tank and each of the second settling tanks, that is, embedding magnets in each settling tank, the upper surface of the magnets is flush with the upper surface of the panel, and the balls are iron balls or iron-carbon alloy balls, which facilitates the magnets to attract the balls and can effectively keep the balls in the receiving tank.

[0040] A stiffening plate is also provided around the outer perimeter of the panel to increase its rigidity.

[0041] By setting up a matrix pressure sensor to monitor the pressure of the ball on the panel as it moves across it, a pressure signal is generated on the sensor at the corresponding position when the ball passes by. By analyzing the time sequence of these signals, the trajectory of the ball can be determined, and the direction of the ball's movement can be intuitively shown. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the spherical curvilinear motion demonstrator of this utility model;

[0043] Figure 2 This is an exploded structural diagram of the spherical curvilinear motion demonstrator of this utility model;

[0044] Figure 3 This is a horizontal cross-sectional view of the spherical curvilinear motion demonstrator of this utility model;

[0045] Figure 4 for Figure 3 A magnified structural diagram of point A in the middle.

[0046] In the picture:

[0047] 10-Panel; 11-Photoelectric door sensor;

[0048] 12-Magnet; 13-First slot;

[0049] 14-Stiffening plate;

[0050] 20 - Launching device; 21 - Mounting plate;

[0051] 21a - First side plate; 21b - Second side plate;

[0052] 22 - First elastic plate; 23 - Second elastic plate;

[0053] 24-Wedge block; 25-Push head;

[0054] 25a - Hand-operated push head; 25b - Connecting part;

[0055] 25c - Indenter; 26 - Ball;

[0056] 30 - Guide plate assembly; 31a - First unit;

[0057] 31b - Unit 2; 31c - Unit 3;

[0058] 32 - First protruding post;

[0059] 35a - First receiving slot; 35b - Second receiving slot;

[0060] 40- Annular inner guide plate. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0062] like Figures 1-4 As shown, this embodiment provides a spherical curvilinear motion demonstrator, including a horizontally arranged panel 10, on which a guide plate assembly 30 is provided, the guide plate assembly 30 enclosing to form a first space.

[0063] The side of the guide plate assembly 30 facing the space enclosed by the guide plate assembly 30 is the inner side of the guide plate assembly 30 and its components, and the opposite side is the outer side of the guide plate assembly 30 and its components. A launching device 20 is provided on the outer side of the guide plate assembly 30.

[0064] The guide plate assembly 30 includes multiple arc-shaped guide plates, one end of each arc-shaped guide plate being the first end and the other end of each arc-shaped guide plate being the second end; the arc-shaped guide plates are arranged in a C-shape in sequence, and each arc-shaped guide plate protrudes in a direction away from the central axis of the guide plate assembly 30; the two ends of the guide plate assembly 30 are the outlet end and the inlet end, respectively; a connection port is formed between the inlet end and the outlet end. It should be noted that the connection port here refers to the non-solid part between the outlet end and the inlet end, and is not part of the guide plate assembly 30, nor is it an opening made on the guide plate assembly 30.

[0065] One of the arc-shaped guide plates adjacent to the connection port is designated as the first unit 31a, and the second end of the first unit 31a is designated as the outlet end. The arc-shaped guide plate adjacent to the first end of the first unit 31a is designated as the third unit 31c, and the remaining arc-shaped guide plates are designated as the second units 31b. The first end of the second unit 31b adjacent to the connection port is designated as the inlet end.

[0066] The launching device 20 is provided with a catapult channel, which is a straight channel. One end of the catapult channel is connected to the first space through a connector, and the other end of the catapult channel has a catapult cavity containing a ball 26.

[0067] The second end of each second unit 31b is connected to the first end of the arc-shaped guide plate adjacent to the second end of the second unit 31b; the second end of the third unit 31c is connected to the first end of the first unit 31a. In this embodiment, the tangent at the second end of each second unit 31b coincides with the tangent at the first end of the arc-shaped guide plate connected to the second end of the second unit 31b; the tangent at the second end of the third unit 31c coincides with the tangent at the first end of the first unit 31a.

[0068] The third unit 31c and each of the second units 31b are detachably connected to the panel 10. Taking the connection structure between one of the second units 31b and the panel 10 as an example, a first protrusion 32 is provided at the lower end of the second unit 31b, and a first slot 13 corresponding to the first protrusion 32 is provided on the panel 10. The first protrusion 32 is inserted into the first slot 13. It should be noted that the connection structure between the third unit 31c and the panel 10 is the same as the connection structure between the second unit 31b and the panel 10, and will not be described again.

[0069] A first receiving slot 35a is provided on the extension line of one end of the ejection channel that connects to the first space; a second receiving slot 35b is provided on the tangential extension line of the second end of each second unit 31b. The first receiving slot 35a and each second receiving slot 35b are respectively mounted on the panel 10.

[0070] Each second receiving slot 35b has a first slot wall and a second slot wall arranged opposite to each other, and each first slot wall and each second slot wall are arranged vertically. Each first slot wall is coplanar with the tangent of the second end of the corresponding second unit 31b. In the same second receiving slot 35b, the central axis of the second slot wall and the guide plate group 30 are located on the same side of the plane where the first slot wall is located.

[0071] The launching device 20 includes a vertically arranged mounting plate 21 and a first side plate 21a and a second side plate 21b disposed on the same side of the mounting plate 21. Specifically, the first side plate 21a and the second side plate 21b are located on the side of the mounting plate 21 closest to the guide plate assembly 30. The first side plate 21a and the second side plate 21b are respectively vertically arranged, and are arranged opposite to each other, forming the ejection channel of the launching device 20. One end of the first side plate 21a is connected to the inlet end, and the other end of the first side plate 21a is connected to the mounting plate 21 and has a first movable opening. A first elastic plate 22 is disposed in the first movable opening. One end of the second side plate 21b is connected to the outlet end, and the other end of the second side plate 21b is connected to the mounting plate 21 and has a second movable opening. A second elastic plate 23 is provided in the second movable opening. The first elastic plate 22 and the second elastic plate 23 are respectively fixed on the mounting plate 21. The first elastic plate 22 and the second elastic plate 23 each have a wedge-shaped block formed at the end away from the mounting plate 21. The two wedge-shaped blocks are arranged facing each other. Specifically, the first elastic plate 22 has a first wedge-shaped block formed at the end away from the mounting plate 21, and the second elastic plate 23 has a second wedge-shaped block formed at the end away from the mounting plate 21. The first wedge-shaped block and the second wedge-shaped block are arranged facing each other. The first wedge-shaped block has a first inclined surface facing the second wedge-shaped block, and the second wedge-shaped block has a second inclined surface facing the first wedge-shaped block. The first inclined surface and the second inclined surface are symmetrically arranged with the ejection channel as the center. The first inclined surface and the second inclined surface gradually approach each other from the end closest to the mounting plate 21 to the corresponding end.

[0072] For ease of explanation, the distance between the end of the first wedge block furthest from the mounting plate 21 and the end of the second inclined surface furthest from the mounting plate 21 is defined as the first distance, and the distance between the end of the first inclined surface closest to the mounting plate 21 and the end of the second inclined surface closest to the mounting plate 21 is defined as the second distance. The diameter of the ball 26 is between the first distance and the second distance.

[0073] A push head 25 is inserted through the mounting plate 21, and the push head 25 is horizontally slidably connected to the mounting plate 21 along the length of the ejection channel. The push head 25 is located between the first elastic plate 22 and the second elastic plate 23. In this embodiment, the first elastic plate 22 and the second elastic plate 23 are arranged symmetrically with the push head 25 as the center, and the first wedge block and the second wedge block are also arranged symmetrically with the push head 25 as the center. The push head 25, the first elastic plate 22 and the second elastic plate 23 together enclose the ejection cavity of the launching device 20, and the opening of the ejection cavity faces the first space.

[0074] To facilitate the installation of the push head 25, the mounting plate 21 and the push head 25 are connected by the following structure: the mounting plate 21 has a horizontally arranged sliding through hole, the cross-section of which is U-shaped, with the U-shaped opening facing upwards. The push head 25 includes an integrally connected push head 25a, a connecting part 25b, and a pressure head 25c. The push head 25 is horizontally slidably connected to the mounting plate 21 along the length of the ejection channel by sliding the connecting part 25b horizontally through the sliding through hole. The push head 25a is located on the side of the mounting plate 21 opposite to the ejection channel, and the pressure head 25c is located on the other side of the mounting plate 21. The U-shaped sliding through hole in the mounting plate 21 facilitates the installation of the push head 25 onto the mounting plate 21 and also facilitates replacement if the push head 25 is damaged during use.

[0075] To facilitate the description of the relationship between the first elastic plate 22, the second elastic plate 23, and the ball 26 during use, the distance between the end of the first wedge block away from the mounting plate 21 and the end of the second inclined surface away from the mounting plate 21 during use is defined as the first use distance, and the distance between the end of the first inclined surface close to the mounting plate 21 and the end of the second inclined surface close to the mounting plate 21 is defined as the second use distance.

[0076] In use, firstly, the ball 26 is placed in the ejection cavity. The first elastic plate 22 and the second elastic plate 23 do not deform, and the first use distance is less than the second use distance. At this time, the launching device 20 is in the energy storage state. Then, the ball 26 is pushed away from the mounting plate 21 by the pressing head 25. The ball 26 simultaneously abuts against the first wedge block and the second wedge block, and the distance between the first wedge block and the second wedge block gradually increases. At this time, the first elastic plate 22 and the second elastic plate 23 respectively produce elastic deformation, and the launching device 20 is in the energy storage process state.

[0077] Then, continue pressing the press head 25. When the first use distance is equal to the diameter of the ball 26, the launching device 20 is in the critical state of energy storage.

[0078] Subsequently, continue pressing the pressing head 25, and the ball 26 gradually moves away from the mounting plate 21. The energy stored between the first elastic plate 22 and the second elastic plate 23 is released, and the ball 26 is launched onto the track section 30. The launching device 20 returns to the state of waiting to store energy.

[0079] In this embodiment, a launching device 20 is provided, which utilizes the elastic deformation of the first elastic plate 22 and the second elastic plate 23 to store and release energy, thereby enabling the ball 26 to obtain an initial velocity. The launching device 20 occupies relatively little space and is easy to store. Furthermore, if a relatively high initial velocity is desired for the ball 26, a ball 26 with a relatively low density can be selected while keeping the volume constant.

[0080] After adopting the above technical solution, by detachably connecting the third unit 31c and each of the second units 31b to the panel 10, and providing a first receiving groove 35a on the extension line of the end of the ejection channel communicating with the first space, and providing a second receiving groove 35b on the tangential extension line of the second end of each of the second units 31b, the third unit 31c and each of the second units 31b are defined as detachable units. In use, when the detachable unit connected to the ejection channel is detached from the panel 10 and the ball 26 is ejected, if the ball 26 travels along the extension line of the ejection channel communicating with the first space... When the extension line of the ball 26 moves into the first receiving slot 35a, the direction of movement of the ball 26 after leaving the ejection channel without being affected by the guide plate group 30 can be intuitively shown. When the detachable unit connected to the second end of one of the second units 31b is removed from the panel 10 and the ball 26 is ejected, when the ball 26 leaves the guide plate group 30 and moves along the tangential extension line of the second end of the second unit 31b into the second receiving slot 35b corresponding to the second unit 31b, the direction of movement of the ball 26 at the position of the second end of the second unit 31b can be more intuitively shown.

[0081] Furthermore, the horizontal cross-sectional profile of the guide plate assembly 30 is arc-shaped; the panel 10 is provided with an annular inner guide plate 40 in the area enclosed by the guide plate assembly 30; the annular inner guide plate 40 is coaxially arranged with the guide plate assembly 30.

[0082] The panel 10 is also provided with several photoelectric gate sensors 11 arranged along the guide plate group 30. Each photoelectric gate sensor 11 includes a transmitter and a receiver.

[0083] In the same photoelectric gate sensor 11, the transmitting end and the receiving end are located on the same radial direction of the guide plate assembly 30, with the transmitting end located on the side of the guide plate assembly 30 away from the annular inner guide plate 40, and the receiving end located on the side of the annular inner guide plate 40 away from the guide plate assembly 30. The guide plate assembly 30 has several first light-passing holes, and the annular inner guide plate 40 has several second light-passing holes. Each first light-passing hole corresponds one-to-one with each transmitting end, and each first light-passing hole and its corresponding transmitting end are located on the same radial direction of the guide plate assembly 30. Each second light-passing hole corresponds one-to-one with each receiving end, and each second light-passing hole and its corresponding receiving end are located on the same radial direction of the guide plate assembly 30.

[0084] A photoelectric gate sensor 11 is used to measure the speed of ball 26. It should be noted that the speed of the ball can be calculated using conventional calculation procedures, which will not be elaborated here.

[0085] Furthermore, each arc-shaped guide plate and the annular inner guide plate 40 is equipped with a pressure sensor group (not shown in the figure) corresponding to each other, and each photoelectric gate sensor 11 is staggered with each pressure sensor group. Each pressure sensor group includes a first flexible thin-film pressure sensor fixed on the corresponding arc-shaped guide plate and a second flexible thin-film pressure sensor fixed on the annular inner guide plate 40. In the same pressure sensor group, the first flexible thin-film pressure sensor and the second flexible thin-film pressure sensor are arranged correspondingly. By setting up the pressure sensor group, the pressure of the ball 26 on the guide plate group 30 and the annular inner guide plate 40 during the movement is detected.

[0086] Furthermore, the panel 10 has a first sink groove at a position corresponding to the first receiving groove 35a, and the panel 10 has a second sink groove at a position corresponding to each of the second receiving grooves 35b. The first receiving groove 35a and each of the second receiving grooves 35b are defined as receiving grooves, and the first sink groove and each of the second sink grooves are defined as sink grooves. This makes it more difficult for the ball 26 to pop out of the receiving groove after entering the receiving groove, and also effectively reduces the speed of the ball 26, thereby keeping the ball 26 in the receiving groove.

[0087] Furthermore, the first settling tank and each of the second settling tanks are respectively embedded with magnets 12, that is, each settling tank is respectively embedded with magnets 12; the upper surface of magnets 12 is flush with the upper surface of panel 10, and ball 26 is iron ball or iron-carbon alloy ball, which makes it easy for magnets 12 to attract ball 26 and effectively keep ball 26 in the receiving tank.

[0088] Furthermore, a stiffening plate 14 is provided on the outer periphery of the panel 10 to improve the rigidity of the panel 10.

[0089] Furthermore, a matrix pressure sensor (not shown in the figure) is provided at the upper end of the panel 10. In this embodiment, the matrix pressure sensor is a flexible thin-film planar matrix pressure sensor, and the matrix pressure sensor has through notches at the positions corresponding to the transmitting device 20, the annular inner guide plate 40, each receiving slot, and each first slot 13.

[0090] It should be noted that the flexible thin-film planar matrix pressure sensor is a pressure sensor that can be purchased directly from the market.

[0091] By setting up a matrix pressure sensor, the pressure of the ball 26 on the panel 10 during its movement on the panel 10 is monitored. Since the ball 26 generates a pressure signal on the sensor at the corresponding position when it passes by, the trajectory of the ball 26 can be determined by analyzing the time sequence of these signals, and thus the direction of the ball 26 can be intuitively shown.

[0092] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, rather than to describe a specific order.

[0093] The present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, and these modifications all fall within the protection scope of the present invention.

Claims

1. A sphere motion demonstrator, characterized in that: The device includes a horizontally arranged panel, on which a guide plate assembly is provided to enclose and form a first space; a launching device is provided on the outside of the guide plate assembly. The guide plate assembly includes multiple arc-shaped guide plates, one end of each arc-shaped guide plate is a first end, and the other end of each arc-shaped guide plate is a second end. The arc-shaped guide plates are arranged in a C-shape and each arc-shaped guide plate protrudes in a direction away from the central axis of the guide plate assembly. The guide plate assembly has an outlet end and an inlet end at its two ends, respectively; a connection port is formed between the outlet end and the inlet end; One of the arc-shaped guide plates adjacent to the connection port is designated as the first unit, and the second end of the first unit is designated as the outlet end. The arc-shaped guide plate adjacent to the first end of the first unit is designated as the third unit, and the remaining arc-shaped guide plates are designated as second units. The first end of the second unit adjacent to the connection port is designated as the inlet end. The launching device is provided with an ejection channel, one end of which is connected to the first space through the connector, and the other end of which has an ejection cavity containing a ball. The second end of each of the second units is connected to the first end of the arc-shaped guide plate adjacent to the second end of the second unit; the second end of the third unit is connected to the first end of the first unit; The third unit and each of the second units are detachably connected to the panel. A first receiving slot is provided on the extension line of the end of the ejection channel that communicates with the first space. A second receiving slot is provided on the tangential extension line of the second end of each of the second units. The first receiving slot and each of the second receiving slots are respectively installed on the panel. Each of the second receiving slots has a first slot wall and a second slot wall arranged opposite to each other, and each of the first slot walls and each of the second slot walls are arranged vertically; each of the first slot walls is coplanar with the tangent of the second end of the corresponding second unit; in the same second receiving slot, the central axis of the second slot wall and the guide plate assembly is located on the same side of the plane where the first slot wall is located.

2. The sphere motion demonstrator as described in claim 1, characterized in that: The tangent at the second end of each of the second units coincides with the tangent at the first end of the arc-shaped guide plate connected to the second end of the second unit; The tangent at the second end of the third unit coincides with the tangent at the first end of the first unit.

3. The sphere motion demonstrator as described in claim 1, characterized in that: The horizontal cross-sectional profile of the guide plate assembly is arc-shaped, and the panel is provided with an annular inner guide plate within the area enclosed by the guide plate assembly; the annular inner guide plate is arranged coaxially with the guide plate assembly.

4. The sphere motion demonstrator as described in claim 3, characterized in that: The panel is also equipped with several photoelectric door sensors arranged along the guide plate group; Each of the aforementioned photoelectric gate sensors includes a transmitter and a receiver; In the same photoelectric gate sensor, the transmitting end and the receiving end are located on the same radial direction of the guide plate group, the transmitting end is located on the side of the guide plate group away from the inner annular guide plate, and the receiving end is located on the side of the inner annular guide plate away from the guide plate group; The guide plate assembly has a plurality of first light-passing holes, and the annular inner guide plate has a plurality of second light-passing holes. Each first light-passing hole corresponds to each of the transmitting ends, and each first light-passing hole and the corresponding transmitting end are located on the same radial direction of the guide plate assembly. Each second light-passing hole corresponds to each of the receiving ends, and each second light-passing hole and the corresponding receiving end are located on the same radial direction of the guide plate assembly.

5. A sphere motion demonstrator as described in claim 3, characterized in that: Each of the arc-shaped guide plates and the annular inner guide plate is provided with a pressure sensor group in a one-to-one correspondence. Each pressure sensor group includes a first flexible thin film pressure sensor fixed on the corresponding arc-shaped guide plate and a second flexible thin film pressure sensor fixed on the annular inner guide plate. In the same pressure sensor group, the first flexible film pressure sensor and the second flexible film pressure sensor are arranged correspondingly.

6. The sphere motion demonstrator as described in claim 1, characterized in that: The panel has a first recessed groove at a position corresponding to the first receiving groove; The panel has a second sink groove at a position corresponding to each of the second receiving slots.

7. A sphere motion demonstrator as described in claim 6, characterized in that: The first sink and each of the second sinks are respectively embedded with magnets, and the upper surface of each magnet is flush with the upper surface of the panel.

8. A sphere motion demonstrator as described in claim 1, characterized in that: The launching device includes a vertically arranged mounting plate and a first side plate and a second side plate disposed on the same side of the mounting plate; the first side plate and the second side plate are arranged opposite to each other and form the ejection channel between them; One end of the first side plate is connected to the inlet end, and the other end of the first side plate is connected to the mounting plate and has a first movable opening. A first elastic plate is provided in the first movable opening. One end of the second side plate is connected to the outlet end, and the other end of the second side plate is connected to the mounting plate and has a second movable opening, in which a second elastic plate is provided; The first elastic plate and the second elastic plate are respectively fixed on the mounting plate. The first elastic plate and the second elastic plate have wedge-shaped blocks formed at the ends away from the mounting plate, and the two wedge-shaped blocks are arranged facing each other. A push head is horizontally slidably inserted into the mounting plate, and the push head is located between the first elastic plate and the second elastic plate; The push head, the first elastic plate, and the second elastic plate together form the ejection cavity, and the opening of the ejection cavity faces the first space.

9. A sphere motion demonstrator as described in claim 1, characterized in that: The outer periphery of the panel is also provided with a stiffening plate.

10. A sphere motion demonstrator as described in claim 1, characterized in that: A matrix pressure sensor is provided at the top of the panel.

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