Learning machine for preschool education

Abstract

The invention relates to an integrated preschool education learning machine which is small in size, light in weight and high in safety, and realizes automatic switching of slides and synchronous output of sounds and pictures through an innovative mechanical transmission and code recognition technology. A light-transmitting through hole is formed in the front side face of the machine shell. An intermittent rotating disc driven by a driving mechanism is arranged in the machine shell, and a plurality of slides carrying character and pattern contents for children to learn are arranged on the periphery of the disc. The light-operated module projects the slide content to an external screen through the light-transmitting through hole; the voice output module carries out voice explanation on the projection content. According to the utility model, the condition that the conventional simple projector has a single function, cannot synchronously play sounds and pictures or has few played contents is changed, the product functions are enriched, the learning interest of young children is stimulated, and more contents can be stored. Through combination of a brand new structure and a circuit design, a common projection slide can be used to match the product, and a sound and picture synchronous playing effect is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of automatic learning machine for early childhood education by mechanical transmission to realize slide switching, combined with projection and voice synchronous output. BACKGROUND

[0002] The tool for learning of existing technology for young children is mostly learning carrier of book type and point reading machine type.The book type is that parents or teachers teach children to learn knowledge by reading the content printed on books for children.The point reading machine type is that children click the text pattern recorded on the books matched with point reading machine by using point reading pen, and then the corresponding annotation content of the clicked text pattern is played out by the player of point reading machine.

[0003] The current learning tool for young children has two defects:

[0004] 1.The book type needs adult to accompany and explain all the time, which increases the burden of parents.

[0005] 2.The point reading machine type needs to use point reading pen, which has the risk of being swallowed or being pricked by children.

[0006] The existing projection equipment cannot automatically match the audio-visual content, and children cannot operate independently. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a safe learning machine with small volume, light weight and integrated type, which realizes automatic switching of slides and synchronous output of audio-visual content through innovative mechanical transmission and coding recognition technology.

[0008] In order to solve the above technical problems, the technical scheme adopted by the present application is:

[0009] The learning machine for early childhood education of the present application comprises a casing and an internal control circuit board, and is characterized in that:

[0010] The front side of the casing is provided with a light transmission hole;

[0011] The casing is internally provided with an intermittent rotating disc driven by a driving mechanism, and a plurality of slides carrying text pattern content for learning of young children are uniformly and intermittently arranged around the disc;

[0012] Each slide is provided with a unique slide code, and a slide code detection module is arranged at the corresponding position in the casing;

[0013] The light control module in the casing projects the content of the slide to the external screen through the light transmission hole;

[0014] The voice output module in the casing performs voice explanation on the projected content;

[0015] The light control module, the voice output module and the chip code detection module are all electrically connected to the control circuit board.

[0016] The rotating disc is provided with a unique disc code and a corresponding disc code detection module.

[0017] The driving mechanism includes a rotating shaft, a sleeve transmission mechanism that drives the rotating shaft to rotate intermittently, and a rocking drive handle. The front end of the rotating shaft is fixedly connected to the center of the rotating disk, and the rear end of the rotating shaft is connected to the rocking drive handle through the sleeve transmission mechanism. When the rocking drive handle rotates one circle, the sleeve transmission mechanism drives the rotating shaft and the rotating disk to rotate an angle, which is the central angle formed between two adjacent slides.

[0018] The sleeve transmission mechanism consists of a dial part, a limiting cylinder, a positioning spring, a propulsion cylinder and a connecting rod. The front end of the dial part is engaged with the rotating shaft, and the rear end thereof is inserted into the limiting cylinder. The positioning spring is sleeved on the outer peripheral wall of the limiting cylinder and abuts against the bottom of the inner cylinder of the propulsion cylinder. The rear side part of the limiting cylinder is inserted into the propulsion cylinder and can move back and forth in the propulsion cylinder. The rear end of the propulsion cylinder is connected to the rocking drive handle through the connecting rod.

[0019] The dial portion is composed of a connecting portion, a fin-tooth portion, and a dial shaft of an integral structure; the front end of the connecting portion is engaged with the rotating shaft; the fin-tooth portion is a plurality of fin-tooth teeth arranged on the outer peripheral wall of the dial shaft and extending radially outward, and the rear end of each fin-tooth tooth has an inclined surface inclined toward one side;

[0020] The limiting cylinder is composed of a cylinder tooth portion and a cylinder shaft portion of an integral structure. The diameter of the cylinder tooth portion is larger than that of the cylinder shaft portion. The cylinder tooth portion has a hollow inner cavity that can accommodate the shift shaft. A slide rail is provided on the outer peripheral wall of the cylinder tooth portion. A plurality of triangular teeth that can mesh with the fin teeth are evenly spaced around the front end of the cylinder tooth portion. A positioning spring is sleeved on the cylinder shaft portion.

[0021] The propulsion cylinder has a hollow channel that can accommodate the cylinder tooth portion. An axial hole is provided in the center of the rear end surface of the propulsion cylinder, through which the cylinder shaft portion can pass. The rear end edge of the propulsion cylinder is fixedly connected to the connecting rod, and the connecting rod is connected to the rocking drive handle. A number of oblique teeth are evenly spaced around the front end of the propulsion cylinder, and a guide groove is provided on the inner circumferential wall of the hollow channel so that the slide rail can be placed therein and move forward and backward.

[0022] A focusing lens is embedded in the light-transmitting through hole.

[0023] A mode button is provided for switching the learning mode.

[0024] The disc code and the sheet code may be Arabic numerals, color dot markings or site codes.

[0025] The disk code detection module and the chip code detection module are photoelectric sensors.

[0026] The scheme of the present application, in combination with coding recognition and slide show technology, compiles the learning content (text pattern) required for early childhood education in several slides, and then installs the several slides of the early childhood education series evenly spaced on the peripheral area of a rotatable turntable (also called rotating turntable). When the turntable rotates to a position, one of the slides is placed opposite the light control module. At this time, the light control module projects the text pattern on the slide onto the external wall or screen, and the recognition module of the slide automatically recognizes the slide and outputs the corresponding early childhood education learning content through the voice output module. The present application changes the current simple projector, which has a single function, cannot play audio and video synchronously, or has very few playing content. The present application not only enriches the product function, stimulates the interest of young children in learning, but also can realize more content storage. Through the combination of new structure and circuit design, the ordinary projection slide can be used to match the present application, and the audio and video synchronous playing effect can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the appearance of the present application.

[0028] Figure 2 It is a back view of the present application. Figure 1

[0029] Figure 3 It is a schematic diagram of the internal mechanism seen after removing the shell of the present application. Figure 1

[0030] Figure 4 It is a schematic diagram of the rotating disc in the present application. Figure 3

[0031] Figure 5 It is a schematic diagram of the combination of the rotating shaft, dial part, limiting cylinder, advancing cylinder and connecting rod in the present application. Figure 3

[0032] Figure 6 It is a schematic diagram of the combination of the rotating shaft and dial part in the present application. Figure 3

[0033] Figure 7 It is a schematic diagram of the combination of the dial part and limiting cylinder in the present application. Figure 3

[0034] Figure 8 It is a schematic diagram of the limiting cylinder in the present application. Figure 3

[0035] Figure 9 It is a schematic diagram of the advancing cylinder in the present application. Figure 3

[0036] The reference signs are as follows:

[0037] ​​​​​​​​Casing 1, left half shell 11, right half shell 12, function button 13, sound hole 14, light-transmitting through hole 15, focusing lens 16, rocking drive handle 17, control circuit board 2, light source 21, rechargeable battery 22, disk code detection module 23, chip code detection module 24, speaker 25, rotating disk 3, positioning rotating shaft 31, chip through hole 32, positioning blind hole 33, rotating shaft 4, shaft disk 41, shaft rod 42, positioning column 43, dial part 5, connecting part 51, fin tooth part 52, fin tooth 53, dial shaft 54, limiting cylinder 6, cylinder tooth part 61, cylinder shaft part 62, slide rail 63, triangular gear 64, propulsion cylinder 7, oblique teeth 71, guide groove 72, shaft hole 73, connecting rod 8, early childhood learning machine 9. DETAILED DESCRIPTION

[0038] 1. Description of the innovative features of the present invention:

[0039] 1. Mechanical positioning: The bevel meshing design of the sleeve transmission mechanism (fin teeth 53 and triangular teeth 64) ensures precise locking position with each rotation.

[0040] 2. Dual coding system: disc coding identifies learning topics (such as fables, mountains and rivers, history, animals, science, etc.), and slice coding locates specific content (such as the specific content contained in a certain topic corresponding to each slide).

[0041] 3. Safety structure: no exposed sharp parts, fully mechanical or DC motor driven, eliminating safety hazards and avoiding electrical risks.

[0042] 2. Specific structure of the present invention

[0043] like Figures 1-9 As shown, the early childhood education learning machine 9 of the present invention includes a housing 1, a control circuit board 2 arranged in the housing 1 and fixed on a corresponding mounting position, and a slide projection mechanism for projecting early childhood learning content onto an external screen.

[0044] (1) Casing 1

[0045] like Figure 1 、 Figure 2 As shown, it can be made of plastic, aluminum alloy or hard plastic material, preferably made of plastic by injection molding process, and its outer contour shape is a rectangular body with rounded corners, which includes a left half shell 11 and a right half shell 12 (with Figure 1 Taking the paper direction as an example, the left side is the front, the right side is the back, the inside of the paper is the left, and the outside of the paper is the right, and the same below), the left half shell 11 and the right half shell 12 can be fastened together to form the casing 1 by screw connection, male and female snap connection or adhesive connection.

[0046] A light transmission hole 15 is provided on the front end surface of the casing 1, and a light condensing lens 16 is inlaid in the light transmission hole 15, which can project the light flow content emitted by the slide projector mechanism to the indoor wall or a preset screen for the baby to browse.

[0047] A handle hole is provided on the left half casing 11 at a position away from the casing 1, which can make the handle shaft of an external rocking drive handle 17 inserted into the casing 1 to connect with the slide projector mechanism, and the rocking drive handle 17 can be manually rocked or driven by a direct current motor.

[0048] A function button 13 for controlling the volume and mode switching and a sound hole 14 for playing the voice output by the player in the casing 1 are provided on the right half casing 12.

[0049] The function button includes the function switching among the human story mode, the animal story mode, the music mode and the sleep aiding mode.

[0050] (II) Control circuit board 2

[0051] As shown in the figure, Figure 3 the electric control part of the present application includes:

[0052] - a single-chip microcomputer operation control unit, which is responsible for the whole machine control, code recognition, memory data calling and audio signal output.

[0053] - a power supply part: providing the working power of the machine, which adopts a rechargeable battery 22.

[0054] - an audio playing unit (also called voice output module): driving the loudspeaker to sound.

[0055] - a projection light unit (also called light control module): a light source 21 for projecting the image of the slide, which can adopt an LED spotlight.

[0056] - a transmission control unit: a circuit unit for controlling the rotation of the rotating disc 3 on which the slide is installed, which can emit a voice prompt sound when driving the rotating disc 3 to rotate one bit angle. The driving mode of the rotating disc 3 can be manually mechanical rocking or driving by a stepping motor.

[0057] - a code recognition unit, including a disc code detection module 23 and a piece code detection module 24, which are respectively used for recognizing the disc code and piece code set on the rotating disc 3, and the positions of the two kinds of codes are different, which can be Arabic numerals, color codes (color point marks), two-dimensional codes, bar codes or graphic codes, etc.; the disc code detection module 23 and the piece code detection module 24 can be photoelectric sensors, magnetic induction sensors or color recognition sensors.

[0058] The light control module, the voice output module, the disk code detection module 23 and the chip code detection module 24 are all electrically connected to the control circuit.

[0059] (3) Slide projection mechanism (such as Figures 3-9 shown)

[0060] It consists of a rotating disk 3, several slides and a driving mechanism.

[0061] 1. Rotate the disc 3

[0062] like Figure 3 、 Figure 4 As shown, the rotating disk 3 is preferably made of a plastic plate, and a positioning rotating shaft 31 is provided at the center of its outer side (for specific components, the side pointing to the outside of the casing 1 is the outer side, and the side pointing to the inside of the casing 1 is the inner side, the same below) for mounting it on the bracket inside the casing 1.

[0063] Driven by a driving mechanism disposed on the inner side of the rotating disk 3, the rotating disk 3 can rotate intermittently. A plurality of through holes 32 are uniformly spaced along the circumference of the rotating disk 3 near the peripheral area. The number of the through holes 32 is preferably eight.

[0064] A slide containing text and patterns for children to learn is installed in each through-hole 32. Each time the rotating disk 3 rotates, a slide rotates to a position opposite the light-transmitting through-hole 15. The light source 21 in the light source module is located on the inner side of the slide and is coaxially arranged with the light-transmitting through-hole 15. As a result, the text and patterns on the slide are illuminated by the focusing lens 16 onto the external screen.

[0065] Positioning blind holes 33 are provided in the central area of ​​the inner side of the rotating disc 3 , the number of which is the same as the disc through holes 32 .

[0066] Next to each slide hole 32 on the rotating disk 3 is a slide code representing the number of the slide hole 32. The slide code detection module 24 is placed on the inner side of the rotating disk 3 at a position opposite to one of the slide codes. When the slide code detection module 24 detects a slide code opposite to it, the MCU of the control circuit calculates the slide code of the slide located at the position of the light source 21, and then plays the voice explanation content corresponding to the text pattern recorded on the slide opposite to the light source 21 through the voice output module.

[0067] At least one disk code representing the number of the rotating disk 3 is provided on the outer surface of the rotating disk 3. Similarly, the disk code detection module 23 is arranged on the outer side of the rotating disk 3 and opposite to one of the disk codes, thereby identifying which type of learning topic content is recorded on the rotating disk 3.

[0068] 2. Drive mechanism

[0069] The drive mechanism comprises a rotating shaft 4, a sleeve transmission mechanism for driving the rotating shaft 4 to rotate intermittently, and a rocking drive handle 17.

[0070] 1) Rotating shaft 4

[0071] As shown in Figure 3 , Figure 5 , Figure 6 , the rotating shaft 4 is composed of a shaft disc 41 and a shaft rod 42 which are integrally structured and coaxially arranged.

[0072] The shaft disc 41 is connected to the front end of the shaft rod 42, and two positioning columns 43 are arranged on the outer side of the shaft disc 41, which can be embedded into the positioning blind holes 33 and can drive the rotating disc 3 to rotate under the drive of the sleeve transmission mechanism.

[0073] The inner end of the shaft rod 42 is a D-shaped, prismatic or special-shaped end column, and the inner end of the shaft rod 42 transmits the power from the rocking drive handle 17 to the rotating disc 3 through the engagement connection structure of the sleeve transmission mechanism. When the rocking drive handle 17 rotates one round, the sleeve transmission mechanism drives the rotating shaft 4 and the rotating disc 3 to rotate by an included angle, which is the central angle formed between two adjacent slides, i.e. the next slide is rotated to the position opposite to the light source 21.

[0074] 2) Sleeve transmission mechanism

[0075] As shown in Figure 3 , Figures 5-9 , the sleeve transmission mechanism is composed of a dial portion 5, a limiting cylinder 6, a positioning spring 65, a pushing cylinder 7 and a connecting rod 8 from front to back.

[0076] The dial portion 5, as shown in Figure 3 , Figures 5-7 , is composed of a connecting portion 51, a fin tooth portion 52 and a dial shaft 54 which are integrally structured and arranged from front to back.

[0077] The connecting portion 51 is sleeve-shaped, which is sleeved on the end column of the shaft rod 42 and is engaged therebetween.

[0078] The fin tooth portion 52 is a plurality of fin teeth 53 extending radially outward arranged on the outer peripheral wall of the dial shaft 54, and the rear end of each fin tooth 53 has an inclined surface inclined to one side;

[0079] The rear end of the dial shaft 54 is inserted into the limiting cylinder 6.

[0080] The limiting cylinder 6, as shown in Figure 3 , Figure 5 , Figure 7 , Figure 8As shown, it consists of a toothed cylinder part 61 and a cylinder shaft part 62 of an integral structure.

[0081] The toothed cylinder part 61 is a sleeve with a hollow inner cavity, the cylinder shaft part 62 is a straight shaft, the outer diameter of the toothed cylinder part 61 is larger than that of the cylinder shaft part 62, and the inner diameter of the hollow inner cavity of the toothed cylinder part 61 is slightly larger than the outer diameter of the shaft 54, when the dial part 5 and the limiting cylinder 6 are combined together, the rear end of the shaft 54 is inserted into the hollow inner cavity.

[0082] A plurality of front and rear sliding rails 63 are arranged on the outer peripheral wall of the toothed cylinder part 61, the front end face of the toothed cylinder part 61 is an angular toothed periphery formed by a plurality of triangular teeth 64 connected in sequence, the front and rear longitudinal section shape of the triangular teeth 64 is a right triangle, when the dial part 5 and the limiting cylinder 6 are combined together, each triangular tooth 64 is engaged with the corresponding fin tooth 53 on the dial part 5, that is, each triangular tooth 64 is inserted into the gap between two adjacent fin teeth 53.

[0083] When the limiting cylinder 6 and the advancing cylinder 7 are combined together, the cylinder shaft part 62 of the limiting cylinder 6 is inserted into the advancing cylinder 7.

[0084] • A positioning spring (not shown in the figure) is sleeved on the outer wall of the cylinder shaft part 62 of the limiting cylinder 6, the front end of the positioning spring abuts against the junction surface of the toothed cylinder part 61 and the cylinder shaft part 62, and the rear end of the positioning spring abuts against the inner bottom surface of the advancing cylinder 7.

[0085] • The advancing cylinder 7, as shown in Figure 3 , Figure 5 , Figure 9 It is a sleeve with a hollow passage capable of accommodating the cylinder shaft part 62 and the positioning spring, the rear end face of the sleeve is provided with a shaft hole 73 through which the rear end of the cylinder shaft part 62 passes, under the condition of applying a rearward force to the limiting cylinder 6, the limiting cylinder 6 compresses the positioning spring and moves backward in the advancing cylinder 7, when the force is released, the limiting cylinder 6 is returned to the original position forward in the advancing cylinder 7 under the restoring force of the positioning spring.

[0086] The front end of the advancing cylinder 7 is a bevel toothed periphery formed by a plurality of bevel teeth 71 connected in sequence, when the dial part 5, the limiting cylinder 6 and the advancing cylinder 7 are combined together and in a stable state (i.e. when a certain slide is in the position opposite to the light source 21), the tooth tip of the bevel tooth 71 is opposite to the tooth tip of one of the fin teeth 53, and at the same time opposite to the gap between two triangular teeth 64.

[0087] The inner peripheral wall of the hollow passage is provided with a guide groove 72, and the sliding rail 63 is arranged in the guide groove 72 and can move forward and backward. The guide groove 72 also serves to constrain the relative rotation of the limiting cylinder 6 and the advancing cylinder 7 in the circumferential direction.

[0088] • The connecting rod 8, as shown in Figure 3、 Figure 5 As shown in the figure, the front end of the pushing cylinder 7 is fixed to the rear end of the limiting cylinder 6, and the rear end is connected to the rocking drive handle 17. When the rocking drive handle 17 rotates periodically, the pushing cylinder 7 moves back and forth on the cylinder shaft 62 of the limiting cylinder 6.

[0089] Embodiment

[0090] The rotating disc 3 is loaded with eight animal theme slides, and the slide codes are color dot arrays. The children rock the drive handle to the "click" sound (the positioning spring reset sound), and the projection displays the tiger image, and the "tiger is a large cat species..." explanation is played. The mode button can switch between Chinese and English modes.

[0091] (Three) Workflow

[0092] 1. Rock the drive handle → the pushing cylinder 7 moves forward → the inclined teeth 71 of the pushing cylinder 7 move forward along the inclined surface of the fin tooth 53 to exert a force on the fin tooth 53 to rotate the dial portion 5 counterclockwise (as viewed from front to back) → the dial portion 5 exerts a force on the limiting cylinder 6 to move it backward → the limiting cylinder 6 compresses the positioning spring → the pushing cylinder 7 continues to move forward to position the fin tooth 53 on the dial portion 5 to pass the triangular tooth 64 on the limiting cylinder 6 → the pushing cylinder 7 starts to move backward until the inclined teeth 71 on the pushing cylinder 7 are out of contact with the fin tooth 53 → the limiting cylinder 6 moves forward under the action of the positioning spring reset force → the triangular tooth 64 on the limiting cylinder 6 exerts a counterclockwise force on the fin tooth 53 in an unstable state → until the tooth tip of the fin tooth 53 is placed in the gap between the two triangular teeth 64 → the dial portion 5 drives the rotating shaft 4 to rotate an angle α → which makes the rotating disc 3 in a new stable state.

[0093] 2. The rotating disc 3 rotates to align the new slide with the light transmission hole 15;

[0094] 3. The slide code detection module 24 recognizes the slide code, and the control circuit board 2 calls the corresponding audio;

[0095] 4. The light control module projects the picture, and the voice output module plays the explanation.

Claims

1. A preschool learning machine, comprising a housing (1) and a built-in control circuit board (2), characterized in that: - A light-transmitting through hole (15) is provided on the front side of the housing (1); - an intermittently rotating disc (3) driven by a driving mechanism is provided in the housing (1), and a plurality of slides containing text and pattern content for children to learn are evenly spaced around the disc; - Each slide is provided with a unique slide code, and a slide code detection module (24) is provided at a corresponding position in the housing (1); - The light control module in the housing (1) projects the slide content onto an external screen through the light-transmitting through hole (15); - a voice output module in the housing (1) provides voice explanation of the projected content; -The light control module, voice output module and chip code detection module (24) are all electrically connected to the control circuit board (2).

2. The preschool learning machine according to claim 1, characterized in that: The rotating disc (3) is provided with a unique disc code and a corresponding disc code detection module (23).

3. The early childhood education learning machine according to claim 2, characterized in that: The driving mechanism comprises a rotating shaft (4), a sleeve transmission mechanism for driving the rotating shaft (4) to rotate intermittently, and a rocking driving handle (17). The front end of the rotating shaft (4) is fixedly connected to the center of the rotating disc (3), and the rear end of the rotating shaft (4) is connected to the rocking driving handle (17) through the sleeve transmission mechanism. When the rocking driving handle (17) rotates one circle, the sleeve transmission mechanism drives the rotating shaft (4) and the rotating disc (3) to rotate at an angle, which is the central angle formed between two adjacent slides.

4. The early childhood education learning machine according to claim 3, characterized in that: The sleeve transmission mechanism consists of a dial portion (5), a limiting cylinder (6), a positioning spring, a propulsion cylinder (7) and a connecting rod (8). The front end of the dial portion (5) is engaged with the rotating shaft (4), and the rear end thereof is inserted into the limiting cylinder (6). The positioning spring is sleeved on the outer peripheral wall of the limiting cylinder (6) and abuts against the inner bottom of the propulsion cylinder (7). The rear side of the limiting cylinder (6) is inserted into the propulsion cylinder (7) and can move back and forth in the propulsion cylinder (7). The rear end of the propulsion cylinder (7) is connected to the rocking drive handle (17) through the connecting rod (8).

5. The early childhood education learning machine according to claim 4, characterized in that: The dial portion (5) is composed of a connecting portion (51), a fin tooth portion (52) and a dial shaft (54) of an integral structure; the front end of the connecting portion (51) is engaged with the rotating shaft (4); the fin tooth portion (52) is a plurality of fin teeth (53) extending radially outward and arranged on the outer peripheral wall of the dial shaft (54); the rear end of each fin tooth (53) has an inclined surface inclined toward one side; The limiting cylinder (6) is composed of a cylinder tooth portion (61) and a cylinder shaft portion (62) of an integral structure. The diameter of the cylinder tooth portion (61) is larger than the diameter of the cylinder shaft portion (62). The cylinder tooth portion (61) has a hollow inner cavity capable of accommodating the shifting shaft (54). A slide rail (63) is provided on the outer peripheral wall of the cylinder tooth portion (61). A plurality of triangular teeth (64) capable of meshing with the fin teeth (53) are evenly spaced around the front end of the cylinder tooth portion (61). A positioning spring is sleeved on the cylinder shaft portion (62). The propulsion cylinder (7) is a hollow passage for accommodating the cylinder tooth portion (61). A shaft hole (73) is provided at the center of the rear end surface of the propulsion cylinder (7) so that the cylinder shaft portion (62) can pass through the shaft hole. The rear end edge of the propulsion cylinder (7) is fixedly connected to the connecting rod (8), and the connecting rod (8) is connected to the rocking drive handle (17). A plurality of oblique teeth (71) are evenly spaced around the front end of the propulsion cylinder (7). A guide groove (72) is provided on the inner peripheral wall of the hollow passage so that the slide rail (63) is placed therein and can move forward and backward.

6. The preschool learning machine according to any one of claims 1 to 5, characterized in that: A focusing lens (16) is embedded in the light-transmitting through hole (15).

7. The early childhood education learning machine according to claim 6, characterized in that: A mode button for switching learning mode is provided on the casing.

8. The early childhood education learning machine according to claim 6, characterized in that: The disc code and the sheet code may be Arabic numerals, color dot markings or site codes.

9. The early childhood education learning machine according to claim 6, characterized in that: The disk code detection module (23) and the chip code detection module (24) are photoelectric sensors.

Images