Film disc for a story projector

Abstract

This invention provides a film tray for a story projector, which is inserted into the main body of the story projector to achieve synchronized playback of images and audio. The film tray includes a housing, a rotating disk, and an audio module. The housing has a projection hole and a drive hole. The rotating disk is rotatably mounted inside the housing and has film pieces corresponding to the projection hole. A transmission component is provided on one side of the rotating disk to engage with the drive assembly of the projector main body. The audio module includes an audio board and a storage unit. The storage unit stores audio data corresponding to the pattern on the film pieces. The audio board is mounted on the housing and interacts with the main body. This invention integrates the image carrier and the audio module, using mechanical drive to achieve image switching, ensuring the correspondence between image and audio, simplifying the operation process, and effectively improving the practicality of the story projector.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and in particular to a film disk for a story projector. Background Technology

[0002] Among existing early childhood education devices, projection-style story machines mostly use digital projection technology to play images. While they project clear, dynamic images using a high-brightness light source and digital imaging module, the strong light can easily irritate children's eyes, making them particularly unsuitable for bedtime scenes. Furthermore, some traditional story projectors use a film-based projection structure, requiring manual film replacement to change content. However, this necessitates manually aligning the first frame of the film with the projection lens; otherwise, the image and audio playback may become out of sync. Additionally, audio data is typically stored in the device's built-in memory, requiring separate operation of the film and storage medium when changing story content—a cumbersome process resulting in a poor user experience. Utility Model Content

[0003] The main purpose of this invention is to provide a film reel for a story projector, aiming to improve the practicality of the film reel for story projectors.

[0004] To achieve the above objectives, the present invention proposes a film reel for a story projector, which is inserted into the main body of the story projector to enable the story projector to play audio and images on the film reel, comprising: The housing has a projection hole and a drive hole; A rotating disk is rotatably disposed within the housing. A film is disposed within the rotating disk, and the pattern on the film corresponds to the position of the projection hole. A transmission component is disposed on one side of the rotating disk, and the transmission component corresponds to the drive hole. An audio module, comprising an audio board and a storage unit disposed on the audio board, wherein the storage unit stores audio data corresponding to the film pattern, and the audio board is mounted on the housing for data transmission with the main body of the story projector.

[0005] Preferably, the housing has a data hole, and the audio board is embedded in the data hole.

[0006] Preferably, the outer wall of the housing is provided with an assembly groove, the data hole is opened in the bottom wall of the assembly groove, the audio board is provided with a transmission connector, and the transmission connector passes through the data hole and is located in the assembly groove.

[0007] Preferably, the audio board transmission connector is provided with metal contacts for plug-in electrical connection with the film recognition female connector of the story projector body.

[0008] Preferably, a fixing post is provided inside the housing, and a fixing hole is provided on the audio board to cooperate with the fixing post. The audio board is fixed to the fixing post through the fixing hole.

[0009] Preferably, the housing and the rotating disk are provided with positioning holes, which are used to cooperate with the positioning module of the story projector body to trigger the rotation and reset of the rotating disk.

[0010] Preferably, the positioning module is an infrared positioning module.

[0011] Preferably, the transmission component is a face gear.

[0012] Preferably, the inner wall of the housing is provided with a mounting base protruding at the position corresponding to the drive hole, and the face gear is located inside the mounting base.

[0013] Preferably, the rotating disk is provided with a limiting post on the other side relative to the face gear, and the housing is provided with a limiting hole that cooperates with the limiting post.

[0014] Preferably, the inner wall of the housing is provided with limiting seats on opposite sides of the rotating disk, and the limiting seats are movably abutting against the side wall of the rotating disk.

[0015] Preferably, the housing includes a front shell and a rear shell, which are fastened together to form a mounting cavity, and the rotating disk and the audio module are disposed within the mounting cavity.

[0016] This invention provides a film tray for a story projector, comprising a housing, a rotating tray, and an audio module. The housing has projection holes and drive holes. The rotating tray is rotatably mounted inside the housing and contains multiple film sheets, the patterns of which correspond to the projection holes. A transmission component is located on one side of the rotating tray to drive the rotation of the story projector body. The audio module includes an audio board and a storage unit, mounted on the housing, for data transmission with the projector body. This structure uses a mechanically rotating tray to switch images, avoiding the strong light stimulation of electronic screens and protecting children's eyesight. The audio module is integrated into the film tray, ensuring synchronized image and audio, simplifying story switching. The modular structure and convenient plug-and-play design enhance usability and interactivity, thus effectively improving the practicality of the story projector. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of the film disk of the story projector of this utility model at one angle; Figure 2 This is a structural schematic diagram of the film disk of the story projector of this utility model from another angle; Figure 3 This is an exploded structural diagram of the film disk of the story projector of this utility model at one angle; Figure 4 This is an exploded structural diagram of the film disk of the story projector of this utility model from another angle; Figure 5 An exploded view of one embodiment of a story projector; Figure 6 A cross-sectional view of a story projector from one angle; Figure 7 This is a cross-sectional view of the story projector from another angle.

[0019] Explanation of icon numbers: 10. Story projector main body; 11. Drive assembly; 12. Identification female connector; 13. Positioning module; 14. Optical assembly; 20. Film disc; 21. Housing; 211. Front housing; 212. Rear housing; 213. Mounting cavity; 22. Projection hole; 23. Drive hole; 24. Data hole; 25. Assembly slot; 26. Fixing post; 27. Positioning hole; 28. Mounting base; 29. ​​Limiting hole; 30. Limiting seat; 40. Rotating disk; 41. Face gear; 42. Limiting post; 50. Audio module; 51. Audio board; 511. Transmission connector; 512. Fixing hole; 52. Storage unit.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] This embodiment provides a film disk 20 for a story projector. The film disk 20 is inserted into the main body 10 of the story projector so that the projector can read the image and audio data stored in the film disk 20 to achieve synchronous playback of the story content.

[0025] like Figures 1 to 7 As shown, the film disc 20 includes a housing 21, a rotating disc 40, and an audio module 50.

[0026] The housing 21 is a hollow structure with an internal mounting cavity 213 for accommodating the rotating disk 40 and the audio module 50. The housing 21 has a projection hole 22, a drive hole 23, and a data hole 24. When the film disk 20 is assembled to the main body 10 of the story projector, the shape of the housing 21 matches the shape and size of the main body slot, and the film disk 20 is stably embedded in the mounting position of the main body through an insertion action. At this time, the projection hole 22 is aligned with the light output path of the projector's optical component 14, ensuring that the projection beam can pass through the film and project the image onto an external screen or wall; the drive hole 23 is opposite to the drive component 11 inside the projector and is used to transmit rotational power; the data hole 24 corresponds to the electrical interface inside the projector, realizing data communication connection.

[0027] The rotating disk 40 is rotatably mounted inside the housing 21, and it rotates smoothly within the housing 21 via a central pivot and a supporting structure. A film is embedded in the rotating disk 40, on which several static patterns are printed, corresponding one-to-one with the positions of the projection holes 22. When the rotating disk 40 rotates, different patterns pass through the projection holes 22 sequentially, achieving image switching. A transmission component, preferably a face gear 41, is provided on one side of the rotating disk 40. This face gear 41 meshes with the drive gear in the projector body 10. After the internal motor of the projector starts, it drives the rotating disk 40 to rotate via gear transmission, bringing different patterns into the light path and achieving automatic switching playback. With this structure, the user only needs to insert the film disk 20 to automatically complete the drive connection, eliminating the need for manual alignment and improving operational convenience and reliability.

[0028] The audio module 50 includes an audio board 51 and a storage unit 52. The storage unit 52 stores audio data corresponding one-to-one with the film pattern, used to achieve synchronized playback of images and audio. The audio board 51 is embedded in the mounting slot 25 on the outer wall of the housing 21. The bottom of the mounting slot 25 has a data hole 24. The transmission connector 511 of the audio board 51 extends into the mounting slot 25 through the data hole 24 and precisely engages with the identification socket 12 of the projector body 10 after insertion. The metal contacts on the audio board 51 form a pluggable electrical connection with the projector identification socket 12. After the host recognizes the film disc 20, it can automatically read the data file in the audio module 50, thereby outputting matching audio while playing the picture, ensuring content synchronization and avoiding misalignment. This structural design facilitates quick replacement of different story content; only the film disc 20 needs to be replaced to complete the overall update of images and audio.

[0029] To ensure the stable installation of the audio board 51, a fixing post 26 is provided on the inner wall of the housing 21. The audio board 51 is provided with fixing holes 512 that cooperate with the fixing post 26. The audio board 51 is fixed inside the housing 21 by screws or clips to prevent loosening or displacement caused by plugging and unplugging operations, and to ensure long-term stability.

[0030] To ensure accurate resetting of the rotating disk 40, positioning holes 27 are provided on both the housing 21 and the rotating disk 40. After the host is inserted, the positioning module 13 (preferably an infrared positioning module 13) inside the host cooperates with the positioning holes 27 to detect the position of the rotating disk 40 during its rotation, achieving precise positioning between frames and ensuring accurate synchronization during screen switching. Infrared detection can identify the initial position and rotation angle of the rotating disk 40 in real time, ensuring that each playback starts from a fixed screen and preventing misaligned playback.

[0031] like Figures 1 to 4As shown, the transmission component adopts a face gear 41 structure, which is installed in the mounting base 28 on the inner wall of the housing 21. The mounting base 28 is used to support the face gear 41 and ensure that its tooth surface maintains stable meshing with the drive gear in the main unit. The face gear 41 has a large meshing contact surface, which can maintain good transmission performance even when there is a slight positional deviation during insertion and removal, ensuring that the rotating disk 40 rotates smoothly and steadily.

[0032] A limit post 42 is provided on the side of the rotating disk 40 opposite to the face gear 41. A limit hole 29 is provided on the housing 21 to cooperate with the limit post 42, which is used to limit the rotation range of the rotating disk 40 and prevent excessive rotation from causing misalignment between the film and the optical path. Through mechanical limiting, it is ensured that the rotating disk 40 always operates within the designed angle range, thereby improving control accuracy.

[0033] like Figure 3 and Figure 4 As shown, in order to further maintain rotational stability, the inner wall of the housing 21 is provided with limiting seats 30 on opposite sides of the rotating disk 40. The limiting seats 30 form a movable abutment relationship with the side wall of the rotating disk 40, so that the rotating disk 40 can be stably supported by the limiting seats 30 on both sides when rotating, preventing shaking and swaying, and ensuring the smoothness of the rotation process and the alignment accuracy of the image.

[0034] like Figure 3 and Figure 4 As shown, the housing 21 adopts a split structure of front housing 211 and rear housing 212. The two parts are fixed together by snaps or screws to form a mounting cavity 213, which facilitates the assembly and maintenance of the rotating disk 40 and the audio module 50.

[0035] Through the above structural design, the film disc 20 and the main body 10 of the story projector achieve precise coordination in terms of optical path, electrical signal, and mechanical transmission. The insertion action simultaneously completes all three connections, simplifying user operation. The rotation of the rotating disc 40 is driven by the main motor through the face gear 41, automatically switching between images; the audio module 50 automatically interfaces with the main circuit and plays audio synchronously, achieving high synchronization between image and audio, improving playback effect and user experience. The positioning module 13 works in conjunction with the limiting structure to ensure precise resetting and frame synchronization of the rotating disc 40, preventing misalignment. The overall structure is compact, stable to install, and easy to assemble, facilitating the replacement of film discs 20 with different content to meet the application needs of multiple story scenarios.

[0036] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A film reel for a story projector, used for insertion into the main body of the story projector to enable the story projector to play audio and images on the film reel, characterized in that, include: The housing has a projection hole and a drive hole; A rotating disk is rotatably disposed within the housing. A film is disposed within the rotating disk, and the pattern on the film corresponds to the position of the projection hole. A transmission component is disposed on one side of the rotating disk, and the transmission component corresponds to the drive hole. An audio module, comprising an audio board and a storage unit disposed on the audio board, wherein the storage unit stores audio data corresponding to the film pattern, and the audio board is mounted on the housing for data transmission with the main body of the story projector.

2. The film disc of the story projector according to claim 1, wherein The housing has a data hole, and the audio board is embedded in the data hole.

3. The film disc of the story projector according to claim 2, wherein The outer wall of the housing is provided with an assembly groove, the data hole is opened in the bottom wall of the assembly groove, the audio board is provided with a transmission connector, and the transmission connector passes through the data hole and is located in the assembly groove.

4. The film disc of the story projector according to claim 3, wherein The audio board transmission connector is equipped with metal contacts for plug-in electrical connection with the film recognition female connector of the story projector body.

5. The film disc of the story projector according to claim 3, wherein A fixing post is provided inside the housing, and a fixing hole is provided on the audio board to cooperate with the fixing post. The audio board is fixed to the fixing post through the fixing hole.

6. The film disc of the story projector according to claim 1, wherein The housing and the rotating disk are provided with positioning holes, which are used to cooperate with the positioning module of the story projector body to trigger the rotation and reset of the rotating disk.

7. The film disk of the story projector as described in claim 6, characterized in that, The positioning module is an infrared positioning module.

8. The film disc of the story projector according to claim 1, wherein, The transmission component is a face gear.

9. The film disk of the story projector as described in claim 8, characterized in that, The inner wall of the housing has a mounting base protruding at the position corresponding to the drive hole, and the face gear is located inside the mounting base.

10. The film disk of the story projector as described in claim 9, characterized in that, The rotating disk has a limiting post on the other side relative to the face gear, and the housing has a limiting hole that cooperates with the limiting post.

11. The film disc of the story projector according to claim 1, wherein The inner wall of the housing is provided with limiting seats on opposite sides of the rotating disk, and the limiting seats are movably abutting against the side wall of the rotating disk.

12. The film disc of the story projector according to claim 1, wherein The housing includes a front shell and a rear shell, which are fastened together to form a mounting cavity, and the rotating disk and the audio module are disposed within the mounting cavity.

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