CN220020423U - Projection story machine - Google Patents

Abstract

The utility model discloses a projection story machine, which comprises a shell and a projection inserting disc assembly, wherein the shell is provided with a slot; the projection plug-in disc assembly is detachably assembled with the slot; the two sides of the slot are respectively provided with a locking mechanism assembled on the shell, the locking mechanism is provided with an assembly part and an elastic cantilever part, the elastic cantilever part is provided with a locking part, and the locking part is arranged towards the slot; when the projection plug-in disc assembly is inserted into the slot, the elastic cantilever part swings elastically until the locking part is matched with the projection plug-in disc assembly to generate a constraint force for pulling out the projection plug-in disc assembly. The elastic force that this scheme produced through elasticity cantilever part makes locking part and projection insert the inseparable locking of dish subassembly to the stability of whole projection insert the dish subassembly is guaranteed to the restraining force that this produced, guarantees that projection insert the dish subassembly can not take place not hard up in the use, and then has guaranteed the normal clear of projection story machine broadcast.

Description

Projection story machine

Technical Field

The utility model relates to the technical field of projection devices, in particular to a story projector.

Background

The story projector is generally used for early education of children, can project and play picture stories, realizes simultaneous display of picture and text sound, and has better use effect. The prior story projector is generally internally provided with a film carrying story pictures, and the story pictures can be displayed by amplifying and projecting the film to a wall surface, a curtain and the like. The films of the conventional story projector are replaceable, and different films can be inserted according to the requirements. The projection inserting disc for fixing the film is fixed in the using process, so that the whole projection inserting disc is prevented from loosening or even separating when the film rotates, and the using is prevented from being influenced. In the prior art, the fixing is realized through an interference clamping mode. Although the technology can realize the fixation of the plug-in disc, the clamping connection can be loosened along with the use.

Therefore, the above technical problems need to be solved.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a story projection machine, which aims to solve the problem that the insertion disc of the existing story projection machine is easy to loose and cannot be used.

In order to solve the technical problems, the basic technical scheme provided by the utility model is as follows:

a story projector comprising:

the shell is provided with a slot communicated with the external space;

the projection inserting disc assembly is detachably assembled with the slot;

each side of the slot is provided with a locking mechanism assembled on the shell, the locking mechanism is configured to be provided with a fitting and an elastic cantilever part connected with the fitting, the fitting is assembled with the shell, and the elastic cantilever part is provided with a locking part which is arranged towards the slot; when the projection plug-in disc assembly is inserted into the slot, the elastic cantilever part swings elastically until the locking part is matched with the projection plug-in disc assembly to generate a constraint force for pulling out the projection plug-in disc assembly.

Further, the locking part is arranged on one side of the elastic cantilever part facing the slot; during assembly, the locking part is matched and connected with a locking groove arranged on the side part of the projection plug-in disc assembly.

Further, during assembly, the locking part is in contact with the lower edge of the locking groove, and the locking part generates elastic pressure on the locking groove under the action of the elastic cantilever part.

Further, the longitudinal section of the locking part is semicircular.

Furthermore, the assembly part comprises two assembly parts which are arranged at intervals, each assembly part is provided with an assembly through hole, and when in assembly, each assembly through hole is sleeved with a positioning column arranged on the shell to realize the assembly and fixation of the assembly part and the shell.

Further, the housing is configured to have a first card plate portion and a second card plate portion, the positioning column is provided at the first card plate portion, and the fitting portion is stably limited at the positioning column when the first card plate portion and the second card plate portion are butted.

Further, the resilient cantilever portions are disposed perpendicular to the fitting.

Further, the projection inserting disc assembly is provided with a front panel and a back panel, and the front panel and the back panel are in butt joint and fixed to form a clamping space for clamping the pattern turntable;

wherein the locking groove is arranged at the side surface of the front panel and/or the back panel.

Further, the outer side of the elastic cantilever part is provided with a limiting part for limiting the outward moving distance of the elastic cantilever part away from the slot.

Further, the locking mechanism is an integral component.

The beneficial effects of the utility model are as follows:

the technical scheme of the utility model relates to a story projector, which comprises a shell and a projection inserting disc assembly, wherein the shell is provided with a slot; the projection plug-in disc assembly is detachably assembled with the slot; each side of the slot is provided with a locking mechanism assembled on the shell, the locking mechanism is configured to be provided with a fitting and an elastic cantilever part connected with the fitting, the fitting is assembled with the shell, and the elastic cantilever part is provided with a locking part which is arranged towards the slot; when the projection plug-in disc assembly is inserted into the slot, the elastic cantilever part swings elastically until the locking part is matched with the projection plug-in disc assembly to generate a constraint force for pulling out the projection plug-in disc assembly. The elastic force that this scheme produced through elasticity cantilever part makes locking part and projection insert the inseparable locking of dish subassembly to the stability of whole projection insert the dish subassembly is guaranteed to the restraining force that this produced, guarantees that projection insert the dish subassembly can not take place not hard up in the use, and then has guaranteed the normal clear of projection story machine broadcast.

Drawings

FIG. 1 is a schematic illustration of a projection storytelling machine (with projection jack assembly not plugged in);

FIG. 2 is a schematic external view of a story projector (plug-in projection plug-in tray assembly);

FIG. 3 is a schematic diagram of the internal structure of a story projector;

FIG. 4 is a schematic illustration of a projection ferrule assembly assembled with two locking mechanisms;

FIG. 5 is an enlarged view of a portion A of FIG. 4;

FIG. 6 is a schematic structural view of a locking mechanism assembly;

fig. 7 is a schematic view of the projection tray assembly.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 7, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if the directions related to the embodiments of the present utility model are shown in the drawings. If a particular gesture changes, the directional indication changes accordingly.

Referring to fig. 1-3, a story projector according to the present utility model includes a housing 10 and a projection tray assembly 20. The housing 10 has a slot 101 communicating with the external space; the projection tray assembly 20 is detachably mounted to the slot 101.

The housing 10 has a light projection mechanism 40 and a drive mechanism 50 inside. The light projection mechanism 40 is used for emitting projection light; the driving mechanism 50 is used for driving a film turntable (not shown) inserted in the slot 101 at the projection tray assembly 20 to rotate. In operation, the drive mechanism 50 drives the film reel in rotation. When the film of the film turntable is aligned with the light projection mechanism 40, the driving mechanism 50 stops working, and the light emitted by the light projection mechanism 40 is projected on the pattern of the film, so that the pattern on the film is projected. Of course, the story projector will play audio that matches the corresponding pattern at the same time as the launch. It should be understood that, in the present embodiment, the specific control manner of the specific driving mechanism 50 and the audio playing are implemented by using techniques known in the art, which are not described herein, but the disclosure of the present utility model should not be considered as insufficient.

Because the drive mechanism 50 drives the film reel within the projection reel assembly 20 in rotation, an upward force is applied to the projection reel assembly 20 during the drive process, which tends to loosen the projection reel assembly 20. To overcome this problem, the present solution provides a locking mechanism 30, and the locking mechanism 30 generates a locking constraint force on the projection tray assembly 20, so as to ensure that the projection tray assembly 20 is stably inserted into the slot 101.

Specifically, as shown in fig. 4 and 5, each of the two sides of the slot 101 has a locking mechanism 30 mounted on the housing 10, the locking mechanism 30 is configured to have a fitting 301 and a resilient cantilever portion 302 connected to the fitting 301, the fitting 301 is mounted on the housing 10, the resilient cantilever portion 302 has a locking portion 303 thereon, and the locking portion 303 is disposed toward the slot 101; when the projection tray assembly 20 is inserted into the slot 101, the elastic cantilever portion 302 swings elastically until the locking portion 303 cooperates with the projection tray assembly 20 to generate a restraining force for pulling out the projection tray assembly 20. The locking mechanism 30 is a unitary member, i.e., the fitting 301 and the resilient cantilever portion 302 are not integrally formed.

The resilient cantilever portion 302 is a resilient member, and the resilient cantilever portion 302 is normally disposed vertically upward. When a force is applied in the lateral direction, the elastic cantilever portion 302 is elastically deformed to generate an elastic force in the opposite direction of the applied force. The projection tray assembly 20 is restrained by the elastic force, so that loosening is prevented. It should be appreciated that conventional interference fit insertion achieves positioning by friction. However, during long-term use, the fit will loosen more and less, and the friction will be less and less, thus loosening will occur, and particularly the force generated by the drive mechanism 50 during operation will be more likely to fall off. In this solution, the elastic cantilever portion 302 will act on the projection tray assembly 20 due to the elastic force generated after the elastic deformation of the projection tray assembly 20 under the extrusion action, so that the projection tray assembly 20 can be firmly inserted into the slot 101. Preferably, the length of the resilient cantilever portion 302 is long such that it has sufficient elastic deformation. Such as the length of the resilient cantilever portion 302 being 4-10mm.

It should be appreciated that in the non-use state, the locking portion 303 protrudes into the slot 101, so that when the projection tray assembly 20 is inserted into the use state, the projection tray assembly 20 will push the locking portion 303 outwards, so that the resilient cantilever portion 302 swings outwards, and the resilient force is regenerated, so that the locking portion 303 can be stably maintained in the locking groove 201. Thus, a stable locking action is achieved.

In detail, as shown in fig. 5, the locking portion 303 is disposed on a side of the elastic cantilever portion 302 facing the slot 101; when assembled, the locking portion 303 is coupled to the locking groove 201 provided on the side of the projection tray assembly 20. That is, in the present embodiment, the locking portion 303 is engaged in the locking groove 201, and the locking portion 303 restrains the projection plug tray unit 20 in the locking groove 201. Thus, the projection ferrule assembly 20 is not displaced, thereby ensuring stability.

Preferably, in some embodiments, the locking portion 303 contacts the lower edge of the locking groove 201 when assembled, and the locking portion 303 generates elastic pressure to the locking groove 201 under the action of the elastic cantilever portion 302. That is, the locking portion 303 always generates a pressing force to the projection tray assembly 20 to prevent the projection tray assembly 20 from being detached. As shown in the drawing, the lower end of the locking groove 201 of the projection tray assembly 20 is always in contact with the locking portion 303. In this way, the spring force generated by the spring cantilever portion 302 will always load on the projection tray assembly 20, which plays a role in enhancing the assembly stability.

As shown in fig. 5, the longitudinal section of the locking portion 303 is semicircular in this embodiment. The semi-circular shape facilitates easy disengagement of the locking portion 303 from the locking groove 201 when the projection ferrule assembly 302 is pulled out of force. Of course, the locking portion 303 is not limited to a circular shape, and may have other circular arc structures.

Specifically, in this embodiment, the assembly 301 includes two assembly parts 3011 disposed at intervals, each assembly part 3011 has an assembly through hole 3012, and each assembly through hole 3012 is sleeved with the positioning post 102 provided on the housing 10 to fix the assembly 301 and the housing 10 during assembly. Namely, the assembly through holes 3012 of the two assembly parts 3011 of the bronze drum are sleeved with the two positioning posts 102 fixed on the shell 10, so that the positioning assembly effect is achieved. So that the entire fitting 301 is not displaced to achieve fitting fixation. And the sleeving manner is adopted, so that the assembly is simpler and more convenient.

In detail, the housing 10 is configured to have a first card plate portion 103 and a second card plate portion 104, wherein the positioning post 102 is provided at the first card plate portion 103, and the fitting portion 3011 is stably limited at the positioning post 102 when the first card plate portion 103 and the second card plate portion 104 are abutted. That is, in the assembly, the pair of second clips 104 is joined to the first clip 103 after the assembly through holes 3012 of the two assembly parts 3011 of the assembly 301 are fitted to the two positioning posts 102 of the first clip 103. The positioning post 102 thus defines the lateral movement of the fitting 301, and the clamping action of the first 103 and second 104 clamping plates restrains the fitting 301 at the positioning post 102. Thus the whole assembly process is very convenient.

In detail, the resilient cantilever portions 302 are disposed perpendicular to the fitting 301. Thus, the processing and the assembly are convenient, and each assembly structure is not too crowded.

As shown in fig. 7, the projection tray assembly 20 has a front panel 202 and a back panel 203, and the front panel 202 and the back panel 203 are butt-jointed and fixed to form a clamping space 204 for clamping the pattern turntable; wherein the locking groove 201 is provided at a side of the front panel 202 and/or the back panel 203. Preferably, as shown in fig. 7, the locking groove 201 is a square groove, and the locking groove 201 is provided on both sides of the front panel 202 and the back panel 203, and penetrates through both sides of the whole body formed by the front panel 202 and the back panel 203, which is convenient for manufacturing and matching the locking portion 301 with the locking groove 201 during assembling.

In addition, the outer side of the elastic cantilever portion 302 has a stopper 105 for limiting the distance that it moves outwardly away from the socket 101 as shown in fig. 5. The stopper 105 is provided at the housing 10 and is integrally formed with the housing 10. Specifically, the limiting portion 105 is disposed in parallel with the elastic cantilever portion 302 at a distance. The elastic cantilever portion 302 is restrained by the restraining portion 105, and the elastic cantilever portion 302 is prevented from being excessively bent, so that breakage is prevented.

In summary, the technical scheme of the utility model realizes a stable locking effect on the projection inserting disc assembly 20 through the two locking mechanisms 30, and ensures the normal use of the whole projection story machine.

In addition, the story projector of the utility model also realizes the optimal design of the internal structure. In the technical scheme, the story projector further comprises a control circuit board 60 and a key circuit board 70, wherein the control circuit board 60 and the key circuit board 70 are arranged inside the shell 10. The control circuit board 60 is connected by a connecting wire. The complicated process of realizing the plug-in connection of the traditional electric control structure in a welding mode is avoided. Of course, the electronic control circuit board 70 is also connected to the drive mechanism 50 and the light projection mechanism 40 in a plug-in manner by plug-in connection. Thus, the problem that the traditional welding operation is inconvenient can be solved.

Importantly, in some embodiments, as shown in fig. 3 and 7, the projection cartridge assembly 20 includes a film turntable 205, the film turntable 205 further including a turntable body 2051 and a film 2052, the turntable body 2051 having a plurality of through holes 20511, each of the plurality of through holes 20511 being disposed directly opposite a pattern (not shown) on the film 2051. When the turntable body 2051 rotates under the driving action of the driving mechanism 50, each through hole 20511 can pass through a position opposite to the light projection mechanism 40, so as to realize that the corresponding pattern is projected outwards by receiving the light emitted by the light projection mechanism 40.

For control, the drive of the drive mechanism 50 is controlled in a conventional manner by inductive identification. During use, there is a problem that identification is insensitive using inductive identification. Thus, in this embodiment, the turntable body 2051 has a number of protrusions 2053 matching the number of through holes 20511, and the protrusions 2053 each rotate around the center of rotation of the turntable body 2051. And the plurality of protrusions 2053 are distributed in a manner consistent with the distribution of the through holes 20511. Correspondingly, a trigger switch 80 is provided in the housing 10. When the dial body 2051 is rotated, each of the protrusions 2053 may sweep over the trigger switch 80 and activate the departure switch 80. By adopting the structure, the control circuit board 60 controls the driving mechanism 50 to work so that the pattern at the through hole 20511 corresponding to the boss 2053 can be directly opposite to the lamplight projection mechanism 40 to realize projection. Namely, the mechanical starting combination of the protruding part and the trigger switch is beneficial to the effective use of the story projector.

Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.

Claims (10)

1. A story projector comprising:

a housing (10), the housing (10) having a slot (101) communicating with an external space;

a projection tray assembly (20) detachably assembled with the slot (101);

the method is characterized in that:

each side of the slot (101) is provided with a locking mechanism (30) assembled on the shell (10), the locking mechanism (30) is configured to be provided with a fitting (301) and an elastic cantilever part (302) connected with the fitting (301), the fitting (301) is assembled with the shell (10), the elastic cantilever part (302) is provided with a locking part (303), and the locking part (303) is arranged towards the slot (101); when the projection plug-in disc assembly (20) is inserted into the slot (101), the elastic cantilever part (302) swings elastically until the locking part (303) is matched with the projection plug-in disc assembly (20) to generate a restraining force for pulling out the projection plug-in disc assembly (20).

2. A story projector as claimed in claim 1, wherein:

the locking part (303) is arranged on one side of the elastic cantilever part (302) facing the slot (101); when assembled, the locking part (303) is matched and connected with a locking groove (201) arranged on the side part of the projection plug-in disc assembly (20).

3. A story projector as claimed in claim 2, wherein:

when the locking device is assembled, the locking part (303) is in contact with the lower edge of the locking groove (201), and the locking part (303) generates elastic pressure on the locking groove (201) under the action of the elastic cantilever part (302).

4. A story projector as claimed in claim 1, wherein:

the longitudinal section of the locking part (303) is semicircular.

5. A story projector as claimed in claim 1, wherein:

the assembly part (301) comprises two assembly parts (3011) which are arranged at intervals, each assembly part (3011) is provided with an assembly through hole (3012), and each assembly through hole (3012) is sleeved with a positioning column (102) arranged on the shell (10) during assembly to realize the assembly fixation of the assembly part (301) and the shell (10).

6. A story projector as claimed in claim 5, wherein:

the housing (10) is configured to have a first clamping plate portion (103) and a second clamping plate portion (104), the positioning column (102) is arranged at the first clamping plate portion (103), and the assembly portion (3011) is stably limited at the positioning column (102) when the first clamping plate portion (103) and the second clamping plate portion (104) are in butt joint.

7. A story projector as claimed in claim 5, wherein:

the resilient cantilever portions (302) are distributed perpendicularly to the fitting (301).

8. A story projector as claimed in claim 2, wherein:

the projection inserting disc assembly (20) is provided with a front panel (202) and a back panel (203), and the front panel (202) and the back panel (203) are in butt joint and fixed to form a clamping space (204) for clamping the pattern turntable;

wherein the locking groove (201) is arranged at the side surface of the front panel (202) and/or the back panel (203).

9. A story projector as claimed in claim 8, wherein:

the outer side of the elastic cantilever part (302) is provided with a limiting part (105) for limiting the outward moving distance of the elastic cantilever part away from the slot (101).

10. A story projector as claimed in claim 1, wherein:

the locking mechanism (30) is a one-piece member.