Transmission device and photographing equipment

Abstract

The utility model discloses a transmission device, which is characterized by comprising a shaft seat, a transmission shaft and a transmission shaft, the rolling shaft group is arranged on the shaft seat and comprises a first rolling shaft and a second rolling shaft, and the first rolling shaft and the second rolling shaft are connected through a transmission assembly and are arranged in parallel; the ratchet wheel is in transmission connection with the transmission assembly; the ratchet wheel is a one-way rotation driving device and can not rotate reversely, so that the rolling shaft group driven by the ratchet wheel only drives the photographic paper to move forwards in one direction and can not return to the photographing equipment, and the situation that the photographic paper is discarded due to the fact that the photographic paper reversely moves back to the photographing equipment after misoperation is avoided.

Description

Technical Field

[0001] The utility model relates to the field of photographing equipment, in particular to a transmission device and photographing equipment. Background Art

[0002] The English name of the instant camera is Polaroid, which is often translated as "Pola", "LaLiDe" or "Polaroid" in my country. Polaroid film has a variety of imaging principles. The films sold in my country are mainly those that use the diffusion transfer method. There are photosensitive emulsion and dye layers on the pages of this film. After exposure, the negative film and the positive film are superimposed and pulled out from between a pair of rollers in the camera. The rollers squeeze the medicine bag and apply the medicine slurry between the negative film and the positive film. The emulsion is developed at the exposed part, and the dye or silver halide at the unexposed part is transferred to the receiving layer of the positive film through the diffusion of the medicine slurry to form an image. After about 1 minute, the positive and negative films are separated, and a positive image identical to the scene is obtained on the positive film, and the opaque negative film is discarded.

[0003] Roller drive extrusion is a widely used structure in instant cameras. It can squeeze the ink in the photo paper to form an image after the instant camera takes a photo. The existing roller drive method is mostly gear drive, which realizes the synchronous rotation of two rollers to squeeze the photo paper through multi-gear connection, so that the photo paper rotates between the two rollers as the rollers rotate, achieving the effect of roller film output.

[0004] Currently, the roller uses a gear transmission method. As the gear rotates forward and reverse, the roller will also rotate forward and reverse. During the photo paper extrusion process, it can only rotate in one direction. Reverse rotation will make the photo paper invalid. Utility Model Content

[0005] In order to overcome the disadvantage of the prior art that the roller may rotate and cause the photographic paper to be scrapped.

[0006] First aspect:

[0007] A transmission device, comprising:

[0008] Axle seat;

[0009] The roller group is installed on the shaft seat, and includes a first roller and a second roller. The first roller and the second roller are connected through a transmission assembly and are arranged in parallel.

[0010] The ratchet is in transmission connection with the transmission assembly.

[0011] Optionally, the transmission assembly includes:

[0012] A first transmission gear is mounted on the first roller;

[0013] The second transmission gear is mounted on the second roller and meshes with the first transmission gear.

[0014] Optionally, a gear shaft is provided at one end of the first transmission gear, a clamping hole is provided on the ratchet, and the gear shaft is installed in the clamping hole of the ratchet.

[0015] Optionally, the ratchet comprises:

[0016] A wheel body, which is transmission-connected to the transmission assembly;

[0017] The elastic resistance component is mounted on the wheel body.

[0018] Optionally, the wheel body comprises:

[0019] A base, fixed on the transmission assembly;

[0020] The shell is rotatably sleeved on the base, the driving assembly is mounted on the shell, and the base and the shell are in transmission contact through the elastic resistance assembly.

[0021] Optionally, the shell has a handle.

[0022] Optionally, the spring-loaded component comprises:

[0023] A plurality of gear teeth are arranged around the inner surface of the housing, and a tooth groove is provided between every two gear teeth;

[0024] A pawl is mounted on the base and abuts against the tooth groove;

[0025] The elastic member is mounted on the base and connected to the ratchet.

[0026] Optionally, the elastic member includes a spring sheet.

[0027] Second aspect:

[0028] A photographing device is provided, comprising the transmission device of the first aspect.

[0029] The beneficial effects of the utility model are as follows: the roller assembly is arranged on the shaft seat, and the first roller and the second roller are arranged to be parallel, and a transmission component is installed on the first roller and the second roller, and then the ratchet is connected to the transmission component in a transmission manner. When people use the photographing device to take pictures, they manually adjust the rotation of the ratchet, and the ratchet drives the transmission component, and the transmission component drives the first roller and the second roller to rotate at the same time, and the photographic paper is transmitted from the device and squeezed between the first roller and the second roller to form an image, and is pushed out under the rotation of the first roller and the second roller, so that people can finally obtain the imaged photos immediately. Since the ratchet is a unidirectional rotating drive device and cannot be reversed, the roller assembly driven by the ratchet will only drive the photographic paper forward in one direction and will not be reversed back into the photographing device, thereby avoiding the reverse movement of the photographic paper back into the photographing device after an operation error, resulting in the waste of the photographic paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 It is an assembly diagram of the utility model applied to a photographing device;

[0032] Figure 2 is an assembly diagram of a roller assembly, a ratchet, and a transmission assembly in some embodiments;

[0033] Figure 3 is an exploded view of a ratchet in some embodiments;

[0034] Figure 4 is a front view of a ratchet hidden base in some embodiments.

[0035] Explanation of the reference numerals: 1. shaft seat; 2. roller assembly; 201. first roller; 202. second roller; 3. ratchet; 301. base; 302. housing; 303. handle; 305. gear teeth; 306. pawl; 307. spring; 4. transmission assembly; 401. first transmission gear; 402. second transmission gear; 403. gear shaft; 5. camera body. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0037] This embodiment provides a transmission device, wherein the photographing device is mainly an instant camera, also commonly called a Polaroid camera, and the transmission mechanism plays the role of squeezing the imaging paper and pushing the paper out in the instant camera.

[0038] A transmission device comprises:

[0039] Axle seat, used to carry the roller;

[0040] The roller assembly 2 is mounted on the shaft seat, and includes a first roller 201 and a second roller 202. The first roller 201 and the second roller 202 are connected via a transmission assembly 4 and are arranged in parallel, and are used to squeeze and push out the photo paper;

[0041] The ratchet wheel 3 is in transmission connection with the transmission assembly 4 and is used for driving the roller to rotate.

[0042] During implementation, the roller group 2 is installed on the shaft seat, and the first roller 201 and the second roller 202 are set to be parallel and parallel, and the transmission component 4 is installed on the first roller 201 and the second roller 202, and then the ratchet 3 is connected to the transmission component 4. When people use the photographing device to take pictures, they manually adjust the ratchet 3 to rotate, and the ratchet 3 drives the transmission component 4, and the transmission component 4 drives the first roller 201 and the second roller 202 to rotate at the same time. The photo paper is transmitted from the device and passes between the first roller 201 and the second roller 202 to be squeezed and imaged, and is pushed out under the rotation of the first roller 201 and the second roller 202, so that people can finally obtain the imaged photos immediately. Since the ratchet 3 is a unidirectional rotating drive device and cannot be reversed, the roller group 2 driven by the ratchet 3 will only drive the photo paper forward in one direction and will not go back into the photographing device, thereby avoiding the reverse movement of the photo paper back into the photographing device after an operation error, resulting in the photo paper being invalidated.

[0043] In some embodiments, the transmission assembly 4 includes:

[0044] The first transmission gear 401 is mounted on the first roller 201;

[0045] The second transmission gear 402 is mounted on the second roller 202 and meshes with the first transmission gear 401 .

[0046] During implementation, the first transmission gear 401 is installed on the first roller 201, and then the first transmission gear 401 is connected to the ratchet 3, and then the second transmission gear 402 is installed on the second roller 202, and the first transmission gear 401 and the second transmission gear 402 are meshed with each other. When the ratchet 3 drives the first transmission gear 401 to rotate, the first transmission gear 401 will drive the first roller 201 to rotate, and the first transmission gear 401 rotates to cooperate with the second transmission gear 402, and the second transmission gear 402 follows the second transmission gear 402 to rotate, and the second transmission gear 402 drives the second roller 202, so that the first roller 201 and the second roller 202 rotate synchronously.

[0047] In some cases, the first transmission gear 401 in the transmission assembly 4 can be replaced by a driving roller, and the second transmission gear 402 can be replaced by a driven roller. The driving roller is connected to the ratchet 3 in transmission, and the driven roller and the driving roller are in contact with each other. When the driving roller rotates under the drive of the ratchet 3, it also pushes the driven roller to rotate, thereby achieving synchronous rotation of the first roller 201 and the second roller 202.

[0048] In some cases, the second transmission gear 402 may be connected to the ratchet 3, the ratchet 3 drives the second transmission gear 402, and the second transmission gear 402 drives the first transmission gear 401. The present invention does not limit the first transmission gear 401 or the second transmission gear 402 as the active transmission component.

[0049] In some embodiments, a gear shaft 403 is disposed at one end of the first transmission gear 401 , a locking hole is disposed on the ratchet 3 , and the gear shaft 403 is installed in the locking hole of the ratchet 3 .

[0050] During implementation, the gear shaft 403 is passed through the clamping hole and then fixed in the clamping hole of the ratchet 3 , and the ratchet 3 drives the first transmission gear 401 to rotate through the gear shaft 403 .

[0051] Specifically, a mounting head is provided on the side of the first transmission gear 401 away from the gear shaft 403, a slot is provided at one end of the first roller 201, and the first transmission gear 401 is fixed in the slot of the first roller 201 by the mounting head to be mounted on the first roller 201, a slot is also provided at one end of the second roller 202, and a mounting head is also provided on the second transmission gear 402, and the second transmission gear 402 is fixed in the slot of the second roller 202 by the mounting head to be mounted on the second roller 202.

[0052] In some embodiments, the ratchet 3 comprises:

[0053] Wheel body;

[0054] A driving assembly is mounted on the wheel body;

[0055] The elastic resistance component is mounted on the wheel body.

[0056] During implementation, the driving assembly is manually held, and then the wheel body is rotated by the driving assembly, and the wheel body drives the transmission assembly 4, and the elastic resistance assembly prevents the wheel body from reversing when the wheel body rotates.

[0057] In some embodiments, the wheel body comprises:

[0058] A base 301 is fixed on the transmission assembly 4;

[0059] The housing 302 is rotatably mounted on the base 301 . The driving assembly is mounted on the housing 302 . The base 301 and the housing 302 are in transmission contact via a spring-loaded assembly.

[0060] During implementation, the housing 302 is rotated on the base 301 through the driving component, and the base 301 is driven to rotate through the elastic resistance component during rotation. The base 301 drives the transmission component 4. When the housing 302 is driven to reverse, the elastic resistance component will also prevent the base 301 from being driven by the housing 302 to reverse.

[0061] Specifically, the housing 302 has a cavity inside and a cavity opening identical to the cavity at one end;

[0062] The base 301 is installed at the cavity mouth, and a through hole is provided on the base 301. The shell 302 is also provided with a through hole, and the through hole on the shell 302 is in the same axial direction as the through hole on the base 301. The through hole on the base 301 and the through hole on the shell 302 together constitute a clamping hole on the ratchet 3. The gear shaft 403 on the first transmission gear 401 first passes through the through hole of the base 301, and the base 301 is fixed on the gear shaft 403, and then one end of the gear shaft 403 reaches the through hole of the shell 302. The gear shaft 403 is provided with a screw hole with an internal thread at one end of the shell 302, and a bolt can be screwed into the screw hole at one end of the gear shaft 403 through the through hole on the shell 302, so as to limit the position of the shell 302, prevent the shell 302 from detaching, and facilitate the disassembly of the shell 302. The detachable shell 302 facilitates the inspection of the internal structure or the replacement of the shell 302.

[0063] In some embodiments, a handle 303 is provided on the housing.

[0064] During implementation, the handle 303 is fixed to the housing 302 via a fixing structure, and the housing 302 is rotated by manually holding the handle 303 .

[0065] In some embodiments, the spring assembly includes:

[0066] A plurality of gear teeth 305 are arranged around the inner surface of the housing 302;

[0067] A ratchet 306 is mounted on the base 301;

[0068] The elastic member is mounted on the base 301 and connected to the pawl 306 .

[0069] During implementation, the pawl 306 remains in contact with the tooth groove under the elastic force of the elastic member. When the shell 302 rotates, the pawl 306 is in contact with a fixed tooth groove, and the pawl 306 rotates with the tooth groove. The pawl 306 drives the base 301 to rotate. The base 301 is fixed on the transmission component 4. Finally, the rotation of the base 301 drives the transmission component 4 to rotate. When the shell 302 is reversed, the pawl 306 is no longer fixed in a tooth groove, and will continue to stay in different tooth grooves. At this time, the pawl 306 is stationary relative to the shell 302, and the pawl 306 cannot drive the base 301 to rotate, and finally cannot drive the transmission component 4, thereby realizing unidirectional drive of the transmission component 4.

[0070] Specifically, two ratchet pawls 306 are provided, each ratchet pawl 306 is connected to a corresponding elastic member, and different ratchet pawls 306 are abutted in different tooth grooves.

[0071] In some embodiments, the elastic member includes a spring sheet 307 .

[0072] During implementation, the spring piece 307 is fixed on the base 301 and connected to the pawl 306 .

[0073] In some cases, the elastic member may also be an elastic structure such as a spring.

[0074] In some embodiments, film outlets are provided on opposite sides of the shaft seat.

[0075] During implementation, the film outlet on one side of the shaft seat is connected to the camera body 5, and the film outlet on the other side of the shaft seat is connected to the outside. After shooting, the photo paper flows out from the film outlet on one side, passes between the first roller 201 and the second roller 202, and flows out from the film outlet on the other side of the shaft seat under the drive of the first roller 201 and the second roller 202, and finally a finished photo is obtained.

[0076] This embodiment further provides a photographing device, including the transmission device in the above embodiment. Since the transmission device has been described in detail in the above embodiment, it will not be repeated here.

[0077] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A transmission device, characterized in that: include: Axle seat; The roller group is installed on the shaft seat, and includes a first roller and a second roller. The first roller and the second roller are connected through a transmission assembly and are arranged in parallel. The ratchet is in transmission connection with the transmission assembly.

2. The transmission device according to claim 1, characterized in that: The transmission assembly comprises: A first transmission gear is mounted on the first roller; The second transmission gear is mounted on the second roller and meshes with the first transmission gear.

3. The transmission device according to claim 1, characterized in that: One end of the first transmission gear is provided with a gear shaft, the ratchet is provided with a clamping hole, and the gear shaft is installed in the clamping hole of the ratchet.

4. The transmission device according to claim 1, characterized in that: The ratchet comprises: A wheel body, which is transmission-connected to the transmission assembly; A driving assembly is mounted on the wheel body; The elastic resistance component is mounted on the wheel body.

5. The transmission device according to claim 4, characterized in that: The wheel body includes: A base, fixed on the transmission assembly; The shell is rotatably sleeved on the base, the driving assembly is mounted on the shell, and the base and the shell are in transmission contact through the elastic resistance assembly.

6. The transmission device according to claim 5, characterized in that: The shell is provided with a handle.

7. The transmission device according to claim 5, characterized in that: The spring-loaded components include: A plurality of gear teeth are arranged around the inner surface of the housing, and a tooth groove is provided between every two gear teeth; A pawl is mounted on the base and abuts against the tooth groove; The elastic member is mounted on the base and connected to the ratchet.

8. The transmission device according to claim 7, characterized in that: The elastic member includes a spring sheet.

9. A photographing device, characterized in that: A transmission device comprising any one of claims 1-8.

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