Projection story machine

Abstract

A projection story machine comprises a shell, a projection disc magazine is fixedly arranged in the shell, a storage area is arranged in the middle of the projection disc magazine, a pop-up assembly is arranged on one side or two sides of the storage area, an insertion groove communicated with the storage area of the projection disc magazine is formed in the shell, the pop-up assembly comprises a sliding block, a connecting rod and a limiting rod, the sliding block is arranged in the projection disc magazine in a sliding mode, and the limiting rod is arranged on the sliding block. The sliding block is provided with a sliding groove, one end of the limiting rod is fixedly arranged in the projection disc magazine, the other end of the limiting rod is arranged in the sliding groove in a sliding mode along with the sliding block, an elastic reset device is further arranged between the sliding block and the projection disc magazine, one end of the connecting rod is connected with the sliding block, and the other end of the connecting rod is provided with a limiting block matched with a clamping groove in the side edge of the projection disc. A first sliding guide part matched with the connecting rod is arranged in the projection disc magazine, and a second sliding guide part matched with the limiting rod is further arranged in the sliding groove. According to the projection story machine, the projection disc can be reliably clamped when being installed and can be taken out conveniently and effortlessly, and the overall shape is smoother and more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of storytelling machines, in particular to a projection storytelling machine. Background Art

[0002] The projection story machine can be used as an early education toy for preschool children. It is used to play picture book stories, music, etc., and stimulate children's cognition of sounds and images through voice stories and projected images.

[0003] The Chinese utility model patent with the authorization announcement number CN 220020423 U discloses a projection storytelling machine, the structure of which is as follows: Figure 1 and Figure 2 As shown, it includes a housing 1a and a projection insert disk assembly 2a, the housing 1a has a slot 3a connected to the external space, and the projection insert disk assembly 2a and the slot 3a are detachably assembled; the two sides of the slot 3a are respectively provided with a locking mechanism 4a assembled on the housing 1a, and the locking mechanism 4a is configured to have an assembly part 5a and an elastic cantilever part 6a connected with the assembly part 5a, the assembly part 5a is assembled with the housing 1a, and the elastic cantilever part 6a has a locking part 7a, and the locking part 7a is arranged toward the slot 3a. When the projection disk needs to be inserted into the projection story machine, the projection disk is first loaded into the projection insert disk assembly 2a, and then the projection insert disk assembly 2a is inserted into the slot 3a, and the elastic cantilever part 6a in the slot 3a is elastically swung until the locking part 7a cooperates with the projection insert disk assembly 2a to generate a restraining force for the projection insert disk assembly 2a to be pulled out.

[0004] However, the existing projector storytelling machine has the following technical problems: the slot 3a is used for mechanical plugging and unplugging, and the elastic cantilever part 6a is used for plastic locking, which makes it easy for the projection disc to be locked tightly during initial use, making plugging and unplugging difficult, and after long-term use and wear, the projection disc cannot be locked tightly; in addition, in order to facilitate plugging and unplugging, a part of the projection disc needs to be exposed on the outside of the shell, which takes up excess space and affects the flatness and beauty of the overall shape. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a projection storytelling machine which can reliably clamp a projection disc when it is installed, is convenient and labor-saving when it is taken out, and has a smoother and more beautiful overall shape.

[0006] The technical solution of the utility model is: a projection story machine, including a shell, a projection disc magazine is fixedly arranged in the shell, the middle of the projection disc magazine is a storage area, one side or both sides of the storage area are provided with a pop-up component, the shell is provided with a slot connected to the storage area of ​​the projection disc magazine, the pop-up component includes a slider, a connecting rod and a limiting rod, the slider is slidably arranged in the projection disc magazine and can slide inward following the projection disc inserted into the slot, the slider is provided with a slide groove, one end of the limiting rod is fixedly arranged in the projection disc magazine, and the other end is slidably arranged in the slide groove following the slider, and a connecting rod is provided between the slider and the projection disc magazine. The slide groove is also provided with a second sliding guide portion cooperating with a limit rod, which is used for limiting the limit rod in the slide groove after the projection disk is pressed for the first time so that the projection disk is installed in place, and for releasing the limit rod and the slide groove after the projection disk is pressed again so that the projection disk is ejected.

[0007] The working principle of the utility model projection story machine is as follows:

[0008] After the projection disk is released, the slider slides outwards under the drive of the elastic reset device, the limit rod returns to the initial position, and the connecting rod retracts the limit block under the guidance of the second sliding guide portion, so that the limit block is separated from the slot of the projection disk, thereby the projection disk can be smoothly pulled out of the slot.

[0009] After adopting the above structure, the utility model has the following advantages:

[0010] The projection story machine of the utility model can load and remove the projection disk by pressing, and there is no need to use brute force like mechanical plugging and unplugging. Therefore, it is not only very convenient and labor-saving when removing, but also not easy to cause wear of parts. After repeated use, it can still ensure that the projection disk is reliably clamped when loaded. In addition, by using the pressing method, there is no need to expose a part of the projection disk on the outside of the shell, so the overall shape is smoother and more beautiful.

[0011] As a preference, it also includes a focus adjustment assembly arranged in the housing and located at the front side of the projection disc magazine, the focus adjustment assembly includes a lens sleeve, an adjustment barrel, a lens, a driven gear, and a dial. The lens sleeve is embedded in the front side of the housing, the driven gear includes a shaft sleeve and a first tooth portion fixed on the shaft sleeve, the dial includes a rotating shaft and a second tooth portion and a dial fixed on the rotating shaft, the shaft sleeve is rotatably installed between the lens sleeve and the projection disc magazine, the rotating shaft is rotatably installed in the housing, the second tooth portion of the dial wheel is meshed with the first tooth portion of the driven gear, the dial of the dial wheel is at least partially exposed outside the housing, one end of the adjustment barrel is threadedly connected to the shaft sleeve of the driven gear, and the other end can move back and forth in the lens sleeve, and the lens is installed in one end of the adjustment barrel near the lens sleeve. This arrangement drives the gear set to rotate by toggling the dial exposed outside the housing, thereby driving the adjustment barrel provided with the lens to move axially to achieve focus adjustment, and the adjustment is very convenient and labor-saving.

[0012] Preferably, the slot is arranged on the side of the housing, which can hide the slot and make the overall structure more concise.

[0013] Preferably, the exposed portion of the dial is located on the side of the housing. This arrangement will not block the projection image when adjusting the focal length.

[0014] Preferably, two ejection assemblies are provided and symmetrically arranged on both sides of the storage area. This arrangement can make the locking force and ejection force provided by the ejection assemblies larger and more stable, thereby ensuring reliable loading and ejection of the projection disc.

[0015] Preferably, the connecting rod and the elastic reset device are arranged side by side on the outside of the slider, and the limiting rod is arranged on the inside of the slider. This arrangement has a reasonable layout, a simple and compact structure, and is easy to install.

[0016] Preferably, the limiting block of the connecting rod is arranged in a semi-cylindrical shape, and the slot on the side of the projection disk matches the shape of the limiting block. This arrangement can make the connection between the connecting rod and the projection disk more reliable and easier to disengage.

[0017] Preferably, the limiting rod is in an inverted U shape. This arrangement is convenient for both fixing the limiting rod and realizing the sliding connection between the limiting rod and the slide slot.

[0018] Preferably, the contact surface between the slider and the projection disk is an arc surface. This arrangement can not only make the projection disk and the slider reliably abut against each other, but also guide the projection disk to slide stably in the same direction.

[0019] Preferably, the projection disk magazine includes a magazine seat and a magazine cover, the two sides of the magazine seat are respectively provided with guide grooves, the two sides of the magazine cover are respectively provided with guide ribs slidably connected to the guide grooves, and the magazine cover is covered on the magazine seat through the guide grooves and the guide ribs. This arrangement facilitates the disassembly and assembly of the magazine seat and the magazine cover, thereby making it very easy to disassemble and assemble the components in the projection disk magazine.

[0020] Preferably, the first sliding guide portion includes an opening provided on the projection disk magazine and a first inclined surface provided in the opening, a rolling block is provided on the connecting rod, the connecting rod is slidably connected in the opening and the rolling block and the first inclined surface are rollingly matched, so that when the rolling block rolls inward along the first inclined surface, the limit block of the connecting rod is pushed into the slot of the projection disk, and when the rolling block rolls outward along the first inclined surface, the limit block of the connecting rod is withdrawn from the slot of the projection disk. The first sliding guide portion has a simple structure, and can not only utilize the cooperation between the rolling block and the first inclined surface to realize the push-in and withdrawal of the limit block, but also utilize the opening to guide the movement of the connecting rod, so that it remains stable during the movement.

[0021] Preferably, the slide groove includes a starting slide extending in the sliding direction of the slider, and the end of the starting slide is connected to a closed annular slide, which is used to fork at the end of the starting slide to form a forward slide and a return slide. The slide groove has a simple structure and is provided with an annular slide, which not only takes up a short length, but also ensures that the limit rod can reliably return to the initial position.

[0022] Preferably, the second sliding guide comprises a right-angle step arranged at the connection between the starting slideway and the return slideway. This arrangement can ensure that the limit rod enters the forward slideway first at the end fork of the starting slideway, thereby ensuring the unidirectionality of the movement route.

[0023] Preferably, the forward slide and the return slide are connected via a V-shaped slide at one end away from the starting slide, and the second sliding guide portion further comprises a positioning recess provided at the bottom of the V-shaped slide, and a first guide surface and a second guide surface provided in the V-shaped slide, wherein the first guide surface is provided on the side of the positioning recess close to the forward slide, and is used to make the limit rod snap into the positioning recess under the guidance of the first guide surface when the projection disk is pressed, and to make the limit rod detach from the positioning recess and enter the return slide under the guidance of the second guide surface when the projection disk is pressed again. This setting uses the positioning recess to clamp the limit rod, and the structure is very simple, and the first guide surface and the second guide surface are provided to ensure the unidirectionality of the movement, so that the locking and unlocking of the limit rod are very reliable.

[0024] Preferably, a second inclined surface connected to the right-angle step is provided in the return slideway to guide the limit rod to return to the starting slideway. This arrangement can ensure that the limit rod can smoothly return to the initial position after the projection disc is ejected, so as to be ready for the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of an existing projection storytelling machine;

[0026] Figure 2 A schematic diagram of the structure of the projection disk assembly and two locking mechanisms of the existing projection story machine;

[0027] Figure 3 This is a structural schematic diagram of the projection storytelling machine of the utility model;

[0028] Figure 4 It is a front view of the projection storytelling machine of the utility model;

[0029] Figure 5 for Figure 4 A cross-sectional view at A-A';

[0030] Figure 6 This is a schematic diagram of the structure of the focus adjustment component and the projection disk magazine of the utility model;

[0031] Figure 7 Another structural schematic diagram of the focus adjustment assembly and the projection disk magazine of the utility model;

[0032] Figure 8 This is a schematic diagram of the structure of the projection disk magazine of the utility model;

[0033] Fig. 9 This is a schematic diagram of the structure of the projection disk magazine of the utility model after the magazine cover is hidden;

[0034] Fig.10 This is a schematic diagram of the structure of the projection disk magazine of the utility model after the magazine seat is hidden;

[0035] Fig.11 Mainly shows the structural schematic diagram of the slider of the utility model;

[0036] In the prior art figure: 1a-housing, 2a-projection insert assembly, 3a-slot, 4a-locking mechanism, 5a-assembly part, 6a-elastic cantilever part, 7a-locking part;

[0037] In the utility model: 1-housing, 2-projection disc magazine, 3-storage area, 4-ejection assembly, 5-slot, 6-slider, 7-connecting rod, 8-limiting rod, 9-slide, 10-elastic reset device, 11-card slot, 12-limiting block, 13-focus adjustment assembly, 14-lens sleeve, 15-adjustment cylinder, 16-lens, 17-driven gear, 18-push wheel, 19-shaft sleeve, 20-first tooth portion, 21-rotating shaft, 22-second tooth portion, 23-dial, 24-annular groove, 25-circular table Step hole, 26-arc surface, 27-first limiting column, 28-second limiting column, 29-bin seat, 30-bin cover, 31-guide groove, 32-guide rib, 33-opening, 34-first inclined surface, 35-rolling block, 36-starting slide, 37-annular slide, 38-forward slide, 39-return slide, 40-right-angle step, 41-V-shaped slide, 42-positioning recess, 43-first guide surface, 44-second guide surface, 45-second inclined surface, 46-front cover, 47-rear cover, 48-projection disk. DETAILED DESCRIPTION

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] Example:

[0040] like Figure 3-11 As shown, a projection story machine includes a shell 1. In this embodiment, the shell 1 is composed of a front cover 46 and a rear cover 47, so as to facilitate the installation of internal components. A projection disk magazine 2 is fixedly arranged in the shell 1. The middle of the projection disk magazine 2 is a storage area 3. One side or both sides of the storage area 3 are provided with a pop-up component 4. The shell 1 is provided with a slot 5 connected to the storage area 3 of the projection disk magazine 2. The pop-up component 4 includes a slider 6, a connecting rod 7 and a limiting rod 8. The slider 6 is slidably arranged in the projection disk magazine 2 and can slide inwardly following the projection disk 48 inserted into the slot 5. The slider 6 is provided with a slide groove 9. One end of the limit rod 8 is fixedly arranged in the projection disk magazine 2, and the other end is slidably arranged in the slide groove 9 following the slider 6. The slider 6 and the projection disk magazine 2 is also provided with an elastic reset device 10, one end of the connecting rod 7 is connected to the slider 6, and the other end is provided with a limit block 12 matched with the groove 11 on the side of the projection disk 48, and a first sliding guide portion matched with the connecting rod 7 is provided in the projection disk magazine 2, which is used to make the limit block 12 of the connecting rod 7 push into the groove 11 of the projection disk 48 when the slider 6 slides inward, and to make the limit block 12 of the connecting rod 7 withdraw from the groove 11 of the projection disk 48 when the slider 6 slides outward, and a second sliding guide portion matched with the limit rod 8 is also provided in the slide groove 9, which is used to limit the limit rod 8 in the slide groove 9 after the projection disk 48 is pressed for the first time so that the projection disk 48 is installed in place, and to release the limit rod 8 and the slide groove 9 after the projection disk 48 is pressed again so that the projection disk 48 is ejected.

[0041] The focus adjustment assembly 13 is also included, which is arranged in the housing 1 and located in front of the projection disk magazine 2. The focus adjustment assembly 13 includes a lens sleeve 14, an adjustment tube 15, a lens 16, a driven gear 17, and a dial 18. The lens sleeve 14 is embedded in the front side of the housing 1. The driven gear 17 includes a shaft sleeve 19 and a first tooth portion 20 fixed on the shaft sleeve 19. The dial 18 includes a rotating shaft 21 and a second tooth portion 22 and a dial 23 fixed on the rotating shaft 21. The shaft sleeve 19 is rotatably installed between the lens sleeve 14 and the projection disk magazine 2. In this embodiment, an annular groove 24 is provided on the side of the lens sleeve 14 close to the shaft sleeve 19. A circular step hole 25 is provided on one side of the projection disc magazine 2 close to the shaft sleeve 19. The shaft sleeve 19 is rotatably connected to the lens sleeve 14 through an annular groove 24 and is rotatably connected to the projection disc magazine 2 through the circular step hole 25. The rotating shaft 21 is rotatably installed in the housing 1. The second tooth portion 22 of the dial wheel 18 is meshed with the first tooth portion 20 of the driven gear 17. The dial 23 of the dial wheel 18 is at least partially exposed outside the housing 1. One end of the adjusting cylinder 15 is threadedly connected to the shaft sleeve 19 of the driven gear 17, and the other end can move back and forth in the lens sleeve 14. The lens 16 is installed in one end of the adjusting cylinder 15 close to the lens sleeve 14.

[0042] The slot 5 is arranged on the side of the shell 1; the exposed part of the dial 23 is located on the side of the shell 1; two pop-up components 4 are arranged, and are symmetrically arranged on both sides of the storage area 3; the connecting rod 7 and the elastic reset device 10 are arranged side by side on the outside of the slider 6, and the limit rod 8 is arranged on the inside of the slider 6.

[0043] The limiting block 12 of the connecting rod 7 is set to be semi-cylindrical, and the groove 11 on the side of the projection disk 48 matches the shape of the limiting block 12; the limiting rod 8 is an inverted U-shape; and the contact surface between the sliding block 6 and the projection disk 48 is an arc surface 26.

[0044] The elastic reset device 10 is a tension spring, a first limiting column 27 is provided on the slider 6, a second limiting column 28 is provided in the projection disk magazine 2 and on the outside of the slider 6, and both ends of the tension spring are respectively sleeved on the first limiting column 27 and the second limiting column 28.

[0045] The projection disk magazine 2 includes a magazine seat 29 and a magazine cover 30. Guide grooves 31 are respectively provided in the two side surfaces of the magazine seat 29. Guide ribs 32 slidably connected to the guide grooves 31 are respectively provided on both sides of the magazine cover 30. The magazine cover 30 is covered on the magazine seat 29 through the guide grooves 31 and the guide ribs 32.

[0046] The first sliding guide portion includes an opening 33 arranged on the projection disk magazine 2, and a first inclined surface 34 arranged in the opening 33. A rolling block 35 is provided on the connecting rod 7. The connecting rod 7 is slidably connected in the opening 33, and the rolling block 35 and the first inclined surface 34 are rollingly matched, so that when the rolling block 35 rolls inward along the first inclined surface 34, the limit block 12 of the connecting rod 7 is pushed into the groove 11 of the projection disk 48, and when the rolling block 35 rolls outward along the first inclined surface 34, the limit block 12 of the connecting rod 7 is withdrawn from the groove 11 of the projection disk 48.

[0047] The slide groove 9 includes a starting slide 36 extending along the sliding direction of the slider 6, and the end of the starting slide 36 is connected to a closed annular slide 37, which is used to fork at the end of the starting slide 36 to form a forward slide 38 and a return slide 39; the second sliding guide portion includes a right-angle step 40 arranged at the connection between the starting slide 36 and the return slide 39; the forward slide 38 and the return slide 39 are connected at one end away from the starting slide 36 through a V-shaped slide 41, and the second sliding guide portion also includes a positioning recess 42, And a first guide surface 43 and a second guide surface 44 are arranged in the V-shaped slide 41. The first guide surface 43 is arranged on the side of the positioning recess 42 close to the forward slide 38, and is used to make the limit rod 8 enter the positioning recess 42 under the guidance of the first guide surface 43 when the projection disk 48 is pressed, and make the limit rod 8 disengage from the positioning recess 42 and enter the return slide 39 under the guidance of the second guide surface 44 when the projection disk 48 is pressed again; the return slide 39 is provided with a second inclined surface 45 connected to the right-angle step 40, which is used to guide the limit rod 8 to return to the starting slide 36.

[0048] The working principle of the utility model projection story machine is as follows:

[0049] Insert the projection disk 48 into the slot 5 of the housing 1, then press the projection disk 48, and the slider 6 in the projection disk magazine 2 slides inwardly along with the projection disk 48; during the inward sliding of the slider 6, the connecting rod 7, under the guidance of the first sliding guide portion, causes the limiting block 12 on the connecting rod 7 to push into the slot 11 on the side of the projection disk 48, and at the same time, the limiting rod 8, under the guidance of the second sliding guide portion, follows the slider 6 to slide in the slide groove 9, and after releasing the projection disk 48, the limiting rod 8 is stuck in the slide groove 9, and at this time, the slider 6 is limited in the projection disk magazine 2, The limit block 12 connected to the slider 6 is pushed into the slot 11 of the projection disk 48, so that the projection disk 48 is installed in place; the projection disk 48 is pressed again, the limit rod 8 is disengaged from the slide groove 9, and the slider 6 is no longer limited by the limit rod 8. After releasing the projection disk 48, the slider 6 slides outward under the drive of the elastic reset device 10, the limit rod 8 returns to the initial position, and the connecting rod 7 retracts the limit block 12 under the guidance of the second sliding guide part, so that the limit block 12 is separated from the slot 11 of the projection disk 48, so that the projection disk 48 can be smoothly pulled out of the slot 5.

[0050] The movement path of the limit rod 8 of the projection story machine of the present invention during the two pressing processes is as follows:

[0051] The projection disc 48 is pressed, and the limiting rod 8 slides along the starting slide 36 to the fork at the end, and is blocked by the right-angle step 40, so it can only enter the forward slide 38, and then continues to slide in the forward slide 38 and enters the V-shaped slide 41, and the projection disc 48 is released. The limiting rod 8 is inserted into the positioning recess 42 of the V-shaped slide 41 under the guidance of the first guide surface 43, and the limiting rod 8 locks the slider 6; the projection disc 48 is pressed again, and the limiting rod 8 is disengaged from the positioning recess 42 under the guidance of the second guide surface 44, and the projection disc 48 is released. The limiting rod 8 enters the return slide 39 under the action of the elastic reset device 10, and smoothly returns to the starting slide 36 under the guidance of the second inclined surface 45.

Claims

1. A projection storytelling machine, comprising a housing (1), characterized in that: A projection disk magazine (2) is fixedly arranged in the shell (1), the middle of the projection disk magazine (2) is a storage area (3), one side or both sides of the storage area (3) are provided with a pop-up assembly (4), the shell (1) is provided with a slot (5) connected to the storage area (3) of the projection disk magazine (2), the pop-up assembly (4) comprises a slider (6), a connecting rod (7) and a limiting rod (8), the slider (6) is slidably arranged in the projection disk magazine (2) and can slide inward following the projection disk (48) inserted into the slot (5), the slider (6) is provided with a slide groove (9), one end of the limiting rod (8) is fixedly arranged in the projection disk magazine (2), and the other end follows the slider (6) to slide in the slide groove (9), an elastic reset device (10) is also provided between the slider (6) and the projection disk magazine (2), one end of the connecting rod (7) is connected to the projection disk magazine (2), and the other end of the limiting rod (8) is connected to the projection disk magazine (2). The slide block (6) is connected to the projection disk (48), and the other end is provided with a limit block (12) matched with the groove (11) on the side of the projection disk (48). The projection disk magazine (2) is provided with a first sliding guide part matched with the connecting rod (7), which is used to make the limit block (12) of the connecting rod (7) push into the groove (11) of the projection disk (48) when the slide block (6) slides inward, and to make the limit block (12) of the connecting rod (7) withdraw from the groove (11) of the projection disk (48) when the slide block (6) slides outward. The slide groove (9) is also provided with a second sliding guide part matched with the limit rod (8), which is used to make the limit rod (8) limited in the slide groove (9) after the projection disk (48) is pressed for the first time so that the projection disk (48) is installed in place, and to make the limit rod (8) and the slide groove (9) release the limit after the projection disk (48) is pressed again so that the projection disk (48) is ejected.

2. A projection storytelling machine according to claim 1, characterized in that: The invention also comprises a focus adjustment assembly (13) which is arranged in the housing (1) and located in front of the projection disk magazine (2). The focus adjustment assembly (13) comprises a lens sleeve (14), an adjustment tube (15), a lens (16), a driven gear (17), and a dial (18). The lens sleeve (14) is embedded in the front of the housing (1). The driven gear (17) comprises a shaft sleeve (19) and a first tooth portion (20) fixed on the shaft sleeve (19). The dial (18) comprises a rotating shaft (21) and a second tooth portion (22) fixed on the rotating shaft (21) and a dial (23). The sleeve (19) is rotatably mounted between the lens sleeve (14) and the projection disk magazine (2); the rotating shaft (21) is rotatably mounted in the housing (1); the second tooth portion (22) of the thumbwheel (18) is meshed with the first tooth portion (20) of the driven gear (17); the dial (23) of the thumbwheel (18) is at least partially exposed outside the housing (1); one end of the adjusting cylinder (15) is threadedly connected to the shaft sleeve (19) of the driven gear (17); the other end can move forward and backward in the lens sleeve (14); and the lens (16) is mounted in one end of the adjusting cylinder (15) close to the lens sleeve (14).

3. A projection storytelling machine according to claim 1, characterized in that: The slot (5) is arranged on the side of the housing (1).

4. A projection storytelling machine according to claim 2, characterized in that: The exposed portion of the dial (23) is located on the side of the housing (1).

5. The projection storytelling machine according to claim 1, characterized in that: Two pop-up assemblies (4) are provided and are symmetrically arranged on both sides of the storage area (3).

6. The projection storytelling machine according to claim 1, characterized in that: The connecting rod (7) and the elastic reset device (10) are arranged side by side on the outside of the slider (6), and the limiting rod (8) is arranged on the inside of the slider (6).

7. The projection storytelling machine according to claim 1, characterized in that: The limiting block (12) of the connecting rod (7) is configured to be semi-cylindrical, and the slot (11) on the side of the projection disk (48) matches the shape of the limiting block (12).

8. The projection storytelling machine according to claim 1, characterized in that: The limiting rod (8) is in an inverted U shape.

9. The projection storytelling machine according to claim 1, characterized in that: The contact surface between the sliding block (6) and the projection disk (48) is a curved surface (26).

10. The projection storytelling machine according to claim 1, characterized in that: The projection disk magazine (2) comprises a magazine seat (29) and a magazine cover (30), wherein guide grooves (31) are respectively arranged in two side surfaces of the magazine seat (29), and guide ribs (32) slidably connected to the guide grooves (31) are respectively arranged on two sides of the magazine cover (30), and the magazine cover (30) is covered on the magazine seat (29) through the guide grooves (31) and the guide ribs (32).

11. The projection storytelling machine according to claim 1, characterized in that: The first sliding guide portion comprises an opening (33) arranged on the projection disk magazine (2) and a first inclined surface (34) arranged in the opening (33); a rolling block (35) is arranged on the connecting rod (7); the connecting rod (7) is slidably connected in the opening (33) and the rolling block (35) and the first inclined surface (34) are rollingly matched, so that when the rolling block (35) rolls inwardly along the first inclined surface (34), the limit block (12) of the connecting rod (7) is pushed into the slot (11) of the projection disk (48); and when the rolling block (35) rolls outwardly along the first inclined surface (34), the limit block (12) of the connecting rod (7) is withdrawn from the slot (11) of the projection disk (48).

12. The projection storytelling machine according to claim 1, characterized in that: The slide groove (9) comprises a starting slideway (36) extending along the sliding direction of the slider (6), the end of the starting slideway (36) being connected to a closed annular slideway (37) for bifurcating at the end of the starting slideway (36) to form a forward slideway (38) and a return slideway (39).

13. A projection storytelling machine according to claim 12, characterized in that: The second sliding guide portion comprises a right-angle step (40) arranged at the connection between the starting slideway (36) and the return slideway (39).

14. The projection storytelling machine according to claim 12, characterized in that: The forward slideway (38) and the return slideway (39) are connected at one end away from the starting slideway (36) through a V-shaped slideway (41). The second sliding guide portion further comprises a positioning recess (42) arranged at the bottom of the V-shaped slideway (41), and a first guide surface (43) and a second guide surface (44) arranged in the V-shaped slideway (41). The first guide surface (43) is arranged on a side of the positioning recess (42) close to the forward slideway (38), and is used to make the limiting rod (8) snap into the positioning recess (42) under the guidance of the first guide surface (43) when the projection disk (48) is pressed, and to make the limiting rod (8) disengage from the positioning recess (42) and enter the return slideway (39) under the guidance of the second guide surface (44) when the projection disk (48) is pressed again.

15. The projection storytelling machine according to claim 13, characterized in that: The return slideway (39) is provided with a second inclined surface (45) connected to the right-angle step (40) for guiding the limiting rod (8) to return to the starting slideway (36).

Images