Transmission mechanism and printer

Abstract

The invention discloses a transmission mechanism and a printer, and relates to the technical field of printers. The transmission mechanism comprises a shell unit, an execution piece, a driving piece, a transmission unit and at least one roller shaft. The shell unit comprises a first shell and a second shell which can be connected in a covering manner; the at least one roll shaft is rotatably mounted on the first shell, and the execution part is mounted on the second shell; the transmission unit and the driving piece are installed on the first shell, the transmission unit comprises a transmission assembly and at least one clutch assembly which are in transmission connection, and the at least one clutch assembly is in transmission connection with the driving piece; when the first shell and the second shell are connected in a covering mode, the executing piece is used for driving the transmission assembly to act so as to drive the at least one clutch assembly to be connected with the at least one roll shaft in a one-to-one correspondence mode, and the at least one clutch assembly is in transmission connection between the roll shaft connected with the clutch assembly and the driving piece. According to the transmission mechanism provided by the invention, the problem that the clutch assembly and the roll shaft are stuck can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of printers, and particularly to a transmission mechanism and a printer. Background Art

[0002] In existing thermal transfer printers, usually, a structure in the upper cover directly pushes a transmission block in the lower case to connect with a carbon ribbon shaft. However, during this process, when the structure in the upper cover and the transmission block are not completely coaxially aligned, it is very easy to have problems such as the transmission block tilting, resulting in jamming or jamming during operation, which is not convenient for customers to operate. Summary of the Invention

[0003] The present application provides a transmission mechanism and a printer to reduce the probability of jamming and jamming of the clutch assembly.

[0004] The present application provides a transmission mechanism, including a housing unit, an actuator, a drive member, a transmission unit, and at least one roller shaft;

[0005] The housing unit includes a first housing and a second housing that can be covered and connected;

[0006] The at least one roller shaft is rotatably installed in the first housing, and the actuator is installed in the second housing;

[0007] The transmission unit and the drive member are installed in the first housing. The transmission unit includes a transmission assembly and at least one clutch assembly that are transmission-connected. At least one of the clutch assemblies is transmission-connected to the drive member;

[0008] When the first housing and the second housing are covered and connected, the actuator is used to drive the transmission assembly to act, so as to drive the at least one clutch assembly to be connected to the at least one roller shaft one by one, and make at least one of the clutch assemblies be transmission-connected between the roller shaft it is connected to and the drive member.

[0009] Based on the above technical solutions, when the second housing is covered on the first housing, the actuator can act on the clutch assembly through the transmission assembly, without the need to coaxially align the actuator and the clutch assembly. On the one hand, it is convenient for the user to cover the second housing on the first housing. On the other hand, it can also reduce the jamming and jamming problems caused by inaccurate alignment between the actuator and the clutch assembly, and improve the user experience.

[0010] In some possible implementation manners, the transmission mechanism includes two of the roller shafts, the transmission unit includes two of the clutch assemblies, and the transmission assembly is transmission-connected to the two clutch assemblies;

[0011] When the first housing is covered and connected to the second housing, the actuator is used to drive the transmission assembly to act, so as to drive the two clutch assemblies to be correspondingly connected to the two roller shafts one by one, and make at least one of the clutch assemblies be in transmission connection between the roller shaft and the drive member connected thereto.

[0012] In some possible implementation manners, the transmission assembly includes a rotating wheel and a sliding block that are in transmission connection;

[0013] The rotating wheel is rotatably installed on the first housing, and the rotation axis of the rotating wheel is parallel to the rotation axis of the roller shaft;

[0014] The sliding block is slidably installed in the first housing and has a forward sliding direction. The roller shaft is arranged at the end of the sliding block. The end of the sliding block is provided with a driving portion. The clutch assembly is in inclined surface fit with the driving portion. The driving portion is located on the upstream side of the corresponding clutch assembly in the forward sliding direction;

[0015] When the first housing is covered and connected to the second housing, the actuator is used to drive the rotating wheel to rotate in the forward rotation direction and drive the sliding block to slide in the forward sliding direction, so that the driving portion drives the clutch assembly to be connected to the corresponding roller shaft.

[0016] In some possible implementation manners, a first inclined surface is arranged on one side of the driving portion close to the corresponding clutch assembly, and a second inclined surface parallel and fitting to the first inclined surface is arranged on the clutch assembly;

[0017] The first inclined surface is inclined gradually in the direction close to the corresponding roller shaft from one end close to the corresponding clutch assembly to the end far from the corresponding clutch assembly.

[0018] In some possible implementation manners, a first abutting block protrudes from one side of the sliding block close to the rotating wheel;

[0019] A second abutting block is arranged on one side of the rotating wheel close to the sliding block;

[0020] When the rotating wheel rotates in the forward rotation direction, the second abutting block abuts against the first abutting block and pushes the sliding block to move in the forward sliding direction.

[0021] In some possible implementation manners, the transmission assembly further includes a first reset elastic member, the first reset elastic member is connected between the sliding block and the first housing, and the sliding block includes a first state position and a second state position;

[0022] When the sliding block is in the second state position, the clutch assembly is connected to the roller shaft under the action of the sliding block, and elastic potential energy for driving the sliding block to switch from the second state position to the first state position is stored in the first reset elastic member.

[0023] In some possible implementation manners, a driving block for receiving the actuator is further disposed on the rotating wheel;

[0024] A limiting groove for clamping the actuator is disposed on the first housing;

[0025] When the first housing and the second housing are covered and connected, the actuator is clamped in the limiting groove and abuts against the upstream side of the driving block.

[0026] In some possible implementation manners, the clutch assembly includes a rotating shaft and a transfer sleeve. The rotating shaft is rotatably installed on the first housing and is coaxially opposite to the corresponding roller shaft. The transfer sleeve is slidably sleeved on the rotating shaft and is circumferentially phased with the rotating shaft. The rotating shaft of at least one clutch assembly is in transmission connection with the driving member;

[0027] When the actuator drives the transmission assembly to act, the transmission assembly drives the transfer sleeve to slide along the rotating shaft and connect with the corresponding roller shaft.

[0028] In some possible implementation manners, the clutch assembly further includes a second reset elastic member. The second reset elastic member is connected to the transfer sleeve and is used to drive the transfer sleeve to move away from the corresponding roller shaft.

[0029] In addition, the present application further provides a printer, including the transmission mechanism provided in each of the above implementation manners. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 The side view structural schematic diagram of the printer in some embodiments is shown;

[0032] Figure 2 The partial structural schematic diagram of the printer in some embodiments is shown;

[0033] Figure 3Shows a schematic diagram of another part of the printer in some embodiments;

[0034] Figure 4 Shows a schematic diagram of the structure of the transmission unit in some embodiments;

[0035] Figure 5 Shows an exploded schematic diagram of the transmission unit in some embodiments;

[0036] Figure 6 Shows a schematic cross-sectional structure diagram of the clutch assembly in some embodiments.

[0037] Description of main element symbols:

[0038] 1000 - Printer;

[0039] 100 - Housing unit; 110 - First housing; 111 - Guide block; 112 - Limit groove; 120 - Second housing;

[0040] 200 - Executing member;

[0041] 310 - Driving member; 320 - Gear set;

[0042] 400 - Transmission unit; 410 - Transmission assembly; 411 - Rotating wheel; 4111 - Second abutting block; 4112 - Driving block; 412 - Sliding block; 4121 - First abutting block; 4122 - Driving part; 41221 - First inclined surface; 413 - First reset elastic member; 420 - Clutch assembly; 421 - Rotating shaft; 4211 - First limiting edge; 422 - Adapter sleeve; 4221 - Second inclined surface; 4222 - Second limiting edge; 423 - Second reset elastic member;

[0043] 500 - Roller shaft. Detailed description of the specific implementation

[0044] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0045] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0047] In the present application, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0049] As Figure 1 and Figure 2 shown, a Cartesian coordinate system is established, and it is defined that the length direction of the printer 1000 is parallel to the direction shown by the x-axis, the width direction of the printer 1000 is parallel to the direction shown by the y-axis, and the height direction of the printer 1000 is parallel to the direction shown by the z-axis. It can be understood that the above definitions are only for the convenience of understanding the relative positional relationship of each part structure in the printer 1000 and should not be construed as a limitation to the present application.

[0050] An embodiment provides a transmission mechanism that can be applied to a printer 1000.

[0051] As Figures 1 to 3 and Figure 5 shown, the transmission mechanism may include a housing unit 100, an actuator 200, a driving member 310, a transmission unit 400, and at least one roller shaft 500.

[0052] Among them, the housing unit 100 may be a housing structure in the printer 1000. In the embodiment, the housing unit 100 may include a first housing 110 and a second housing 120, and the first housing 110 may be cover-connected to the second housing 120. It can be understood that the second housing 120 can also be opened relative to the first housing 110.

[0053] The at least one roller shaft 500 is rotatably installed in the first housing 110. In some embodiments, the rotation axis of the roller shaft 500 may be parallel to the length direction of the printer 1000. During use, the at least one roller shaft 500 can be used to drive the carbon ribbon in the printer 1000 to move.

[0054] Combined with Figure 4 again, in the embodiment, both the transmission unit 400 and the driving member 310 are installed in the first housing 110 and are located at the same end of the roller shaft 500. The transmission unit 400 may include a transmission assembly 410 and at least one clutch assembly 420 that are transmission-connected. The at least one clutch assembly 420 corresponds to and is coaxially arranged with the at least one roller shaft 500. And at least one of the clutch assemblies 420 is transmission-connected to the driving member 310.

[0055] In addition, the actuator 200 may be arranged in the second housing 120.

[0056] When the second housing 120 is cover-connected to the first housing 110, the actuator 200 can act on the transmission assembly 410 and drive the transmission assembly 410 to act, so as to drive the at least one clutch assembly 420 to be connected to the at least one roller shaft 500 correspondingly. It can be understood that the clutch assembly 420 transmission-connected to the driving member 310 can realize the transmission connection between the corresponding roller shaft 500 and the driving member 310.

[0057] During use, the driving member 310 can drive the corresponding roller shaft 500 to rotate through the clutch assembly 420 connected thereto, and then drive the carbon ribbon to move.

[0058] In the present application, when the second housing 120 is covered on the first housing 110, the actuator 200 can act on the clutch assembly 420 through the transmission assembly 410, and there is no need to align the actuator 200 and the clutch assembly 420 coaxially. On the one hand, it is convenient for the user to cover the second housing 120 on the first housing 110. On the other hand, it can also reduce the jamming and stuck problems caused by the inaccurate alignment of the actuator 200 and the clutch assembly 420, and improve the user experience.

[0059] like Figures 1 to 3 As shown, further, in some embodiments, one end of the first housing 110 may be hinged to one end of the second housing 120. The other end of the first housing 110 away from its own hinge may be detachably connected to the other end of the second housing 120 away from its own hinge through a buckle.

[0060] In other embodiments, when the second shell 120 is opened relative to the first shell 110, the second shell 120 can also be completely separated from the first shell 110. When the second shell 120 is closed and connected with the first shell 110, the second shell 120 and the first shell 110 can be fixedly connected by buckles.

[0061] like Figure 2 and Figure 4 As shown, in some embodiments, the transmission mechanism may include two rollers 500. The two rollers 500 may be installed in parallel in the first housing 110 in the positive sliding direction, and the two rollers 500 are arranged at intervals. The positive sliding direction may be parallel to the width direction of the printer 1000. That is, in the width direction of the printer 1000, the two rollers 500 are arranged on both sides of the first housing 110.

[0062] Combined with Figure 5 Correspondingly, the transmission unit 400 may include two clutch assemblies 420, which are arranged one by one with the two roller shafts 500. The two clutch assemblies 420 may be located at the same end of the two roller shafts 500. The transmission assembly 410 and the driving member 310 may be arranged at one end of the roller shaft 500 close to the clutch assembly 420. And the transmission assembly 410 is respectively connected to the two clutch assemblies 420 in a transmission manner.

[0063] In other embodiments, the transmission mechanism may further include one, three, five, or other equal number of rollers 500 , and the number of clutch assemblies 420 may be equal to the number of rollers 500 .

[0064] When the first shell 110 is connected with the second shell 120, the actuator 200 can drive the transmission component 410 to operate, so as to drive the two clutch components 420 to be connected to the two rollers 500 one by one, and make at least one clutch component 420 transmission-connected between the roller 500 to which it is connected and the driving component 310.

[0065] As Figure 4 and Figure 5 shown, the transmission assembly 410 may include a rotating wheel 411 and a sliding block 412 that are transmission-connected.

[0066] Among them, the rotating wheel 411 is rotatably installed on the first housing 110, and the rotation axis of the rotating wheel 411 may be parallel to the rotation axis of the roller shaft 500. And the rotating wheel 411 may have a forward rotation direction. In addition, a driving block 4112 is also provided on the rotating wheel 411. When the second housing 120 is covered on the first housing 110, the actuator 200 may abut against the upstream side of the driving block 4112 to push the rotating wheel 411 to rotate in the forward rotation direction. That is, in the forward rotation direction, the actuator 200 is located on the upstream side of the driving block 4112.

[0067] The sliding block 412 is slidably installed on the first housing 110 and is located on the side of the rotating wheel 411 close to the roller shaft 500. Among them, the sliding direction of the sliding block 412 may be parallel to the width direction of the printer 1000. And the sliding block 412 may be generally located between the two clutch assemblies 420. In addition, the sliding block 412 may have a forward sliding direction.

[0068] In the embodiment, when the second housing 120 is covered and connected to the first housing 110, the actuator 200 may drive the rotating wheel 411 to rotate in the forward rotation direction. When the rotating wheel 411 rotates in the forward rotation direction, it may drive the sliding block 412 to slide in the forward sliding direction and drive the two clutch assemblies 420 to be respectively connected to the corresponding roller shafts 500.

[0069] In some embodiments, a first abutting block 4121 protrudes from the side of the sliding block 412 close to the rotating wheel 411. A second abutting block 4111 is provided on the side of the rotating wheel 411 close to the sliding block 412. Along the forward rotation direction of the rotating wheel 411, the second abutting block 4111 may abut against the upstream side of the first abutting block 4121. When the actuator 200 drives the rotating wheel 411 to rotate in the forward rotation direction, the second abutting block 4111 may push the first abutting block 4121 to move, thereby driving the sliding block 412 to move in the forward sliding direction.

[0070] In other embodiments, the rotating wheel 411 may also be slidably installed in the first housing 110 and may be in inclined surface cooperation with the sliding block 412. When the actuator 200 acts on the rotating wheel 411, it may drive the rotating wheel 411 to move in the reverse direction of the forward sliding direction and at the same time move away from the second housing 120. During the movement of the rotating wheel 411, it may push the sliding block 412 to move in the forward sliding direction to drive the two clutch assemblies 420 to be respectively connected to the corresponding roller shafts 500.

[0071] In an embodiment, the sliding block 412 may include a first state bit and a second state bit. Along the forward sliding direction, the first state bit may be located on the upstream side of the second state bit. When the sliding block 412 is in the first state bit, the two clutch assemblies 420 may be allowed to separate from the corresponding roller shafts 500. When the sliding block 412 is in the second state bit, the two clutch assemblies 420 may be respectively connected to the corresponding roller shafts 500.

[0072] As Figure 4 and Figure 5 shown, in some embodiments, the transmission assembly 410 further includes a first reset elastic member 413, which can be used to drive the sliding block 412 to switch from the second state bit to the first state bit for resetting. In the embodiment, one end of the first reset elastic member 413 may be fixedly connected to the first housing 110, and the other end of the first reset elastic member 413 may be fixedly connected to the sliding block 412. Along the forward sliding direction, the connection point of the first reset elastic member 413 and the sliding block 412 is located on the downstream side of the connection point of the first reset elastic member 413 and the first housing 110. When the sliding block 412 is in the first state bit, the first reset elastic member 413 may be in a stretched or natural elongation state.

[0073] When the sliding block 412 slides from the first state bit to the second state bit along the forward sliding direction, the first reset elastic member 413 may be stretched and the first reset elastic member 413 stores the corresponding elastic potential energy. When the extrusion action of the actuator 200 on the rotating wheel 411 is withdrawn, the first reset elastic member 413 may release the elastic potential energy and drive the sliding block 412 to slide in the reverse direction of the forward sliding direction for resetting. At the same time, the sliding block 412 may drive the rotating wheel 411 to rotate in the reverse direction of the forward rotation direction for resetting.

[0074] In some embodiments, the first reset elastic member 413 may be a tension spring.

[0075] In some other embodiments, the first reset elastic member 413 may be a structure such as a leaf spring, a flexible column or an elastic rope.

[0076] In some other embodiments, one end of the first reset elastic member 413 may abut against the sliding block 412, and the other end may abut against the first housing 110. Along the forward sliding direction, the abutting point of the first reset elastic member 413 and the first housing 110 may be located on the downstream side of the abutting point of the first reset elastic member 413 and the sliding block 412. When the sliding block 412 is in the first state bit, the first reset elastic member 413 is in a compressed or natural elongation state.

[0077] As Figure 4 and Figure 5As shown, a limiting groove 112 for clamping the actuator 200 is further formed on the first housing 110. When the first housing 110 is covered and connected to the second housing 120, the actuator 200 can be limited in the limiting groove 112, which can prevent the actuator 200 from moving randomly, thereby avoiding the random reset of the rotating wheel 411 and the sliding block 412 under the action of the first reset elastic member 413.

[0078] In addition, a guiding block 111 connected to the opening structure of the limiting groove 112 is further arranged on the first housing 110, and the guiding block 111 faces the driving block 4112. Along the forward rotation direction, the guiding block 111 can be located on the upstream side of the driving block 4112. On the one hand, when the first housing 110 is covered and connected to the second housing 120, the guiding block 111 can provide a guiding function for the actuator 200 so that the actuator 200 can smoothly enter the limiting groove 112. On the other hand, when the first reset elastic member 413 drives the sliding block 412 to reset from the second state position to the first state position, the guiding block 111 can limit the reverse rotation stroke of the driving block 4112 to prevent the rotating wheel 411 from rotating excessively. When the second housing 120 is covered and connected to the first housing 110, the actuator 200 can be inserted into the limiting groove 112 between the driving block 4112 and the guiding block 111, and gradually push the driving block 4112 to drive the rotating wheel 411 to rotate along the forward rotation direction.

[0079] As Figures 4 to 6 shown, the clutch assembly 420 includes a rotating shaft 421 and a transfer sleeve 422. Among them, the rotating shaft 421 can be arranged parallel to the roller shaft 500, and the rotating shaft 421 is rotatably installed on the first housing 110. The transfer sleeve 422 can be slidably installed on the rotating shaft 421 along the axial direction of the rotating shaft 421 to approach or separate from the corresponding roller shaft 500.

[0080] It can be understood that when the transfer sleeve 422 approaches the corresponding roller shaft 500, it can be connected to the corresponding roller shaft 500 and achieve circumferential limitation, that is, prevent the relative rotation between the transfer sleeve 422 and the roller shaft 500. When the transfer sleeve 422 moves away from the corresponding roller shaft 500, it can be separated from the roller shaft 500. In addition, the transfer sleeve 422 and the rotating shaft 421 are in non-circular fit, which can achieve circumferential limitation and prevent the relative rotation between the transfer sleeve 422 and the rotating shaft 421. When the rotating shaft 421 rotates relative to the first housing 110, the corresponding roller shaft 500 can be driven to rotate synchronously through the transfer sleeve 422.

[0081] In some embodiments, a driving portion 4122 is arranged at both ends of the sliding block 412. Along the forward sliding direction, the two driving portions 4122 are correspondingly arranged on the upstream sides of the two clutch assemblies 420.

[0082] In some embodiments, the driving part 4122 is in inclined surface fit with the adapter sleeve 422 in the corresponding clutch assembly 420. When the sliding block 412 slides along the forward sliding direction, the adapter sleeve 422 in the two clutch assemblies 420 can be driven to slide along the rotating shaft 421 towards the direction close to the corresponding roller shaft 500.

[0083] Specifically, on one side of the driving part 4122 close to the corresponding clutch assembly 420, a first inclined surface 41221 is configured, and the first inclined surface 41221 is located on the side of the sliding block 412 away from the rotating wheel 411. The first inclined surface 41221 can be inclined gradually towards the direction away from the rotating wheel 411 (i.e., gradually towards the direction close to the corresponding roller shaft 500) from one end close to the corresponding clutch assembly 420 to the end away from the corresponding clutch assembly 420. A second inclined surface 4221 that cooperates with the first inclined surface 41221 can be provided at one end of the adapter sleeve 422 away from the corresponding roller shaft 500, and the second inclined surface 4221 is parallel to the first inclined surface 41221.

[0084] When the sliding block 412 slides along the forward sliding direction, through the cooperation of the first inclined surface 41221 and the second inclined surface 4221, the adapter sleeve 422 can be extruded to move towards the direction close to the corresponding roller shaft 500 so as to be connected to the roller shaft 500.

[0085] As Figure 5 and Figure 6 shown, the clutch assembly 420 further includes a second reset elastic member 423. The second reset elastic member 423 can be used to drive the adapter sleeve 422 to move towards the end away from the corresponding roller shaft 500.

[0086] Specifically, in some embodiments, a first limiting edge 4211 can protrude from one end of the rotating shaft 421 close to the corresponding roller shaft 500, and the first limiting edge 4211 can extend radially along the rotating shaft 421. A second limiting edge 4222 can protrude from one side of the adapter sleeve 422 close to the rotating shaft 421, and the second limiting edge 4222 can be opposite to the side of the first limiting edge 4211 away from the corresponding roller shaft 500.

[0087] The second reset elastic member 423 can be sleeved on the rotating shaft 421. And both ends of the second reset elastic member 423 can respectively abut against the first limiting edge 4211 and the second limiting edge 4222. When the adapter sleeve 422 is separated from the corresponding roller shaft 500, the second reset elastic member 423 can be in a natural elongation state or a compressed state. When the adapter sleeve 422 is connected to the corresponding roller shaft 500, the second reset elastic member 423 can be in a compressed state and store corresponding elastic potential energy. In some embodiments, the second reset elastic member 423 can be a spring.

[0088] In some other embodiments, the second reset elastic member 423 can also be a structure such as a spring piece or a flexible column.

[0089] In some other embodiments, one end of the second reset elastic member 423 may be fixedly connected to one end of the adapter sleeve 422 away from the corresponding roller shaft 500. The other end of the second reset elastic member 423 may be fixedly connected to the first housing 110 and located on the side of the adapter sleeve 422 away from the corresponding roller shaft 500. When the adapter sleeve 422 is connected to the corresponding roller shaft 500, the second reset elastic member 423 may be in a stretched state and store corresponding elastic potential energy.

[0090] When the action of the actuator 200 on the rotating wheel 411 is withdrawn, the adapter sleeve 422 may move away from the corresponding roller shaft 500 and reset under the action of the elastic potential energy of the second reset elastic member 423. At the same time, the adapter sleeve 422 may also act on the sliding block 412 and cooperate with the first reset elastic member 413 to push the sliding block 412 to reset. Thus, the separation of the clutch assembly 420 from the corresponding roller shaft 500 can be achieved.

[0091] Of course, in some other embodiments, the adapter sleeve 422, the sliding block 412 and the rotating wheel 411 can also be reset manually.

[0092] As Figure 5 shown, in some embodiments, the rotating shaft 421 of one of the clutch assemblies 420 can be drivingly connected to the driving member 310 through the gear set 320. Correspondingly, the roller shaft 500 connected to this clutch assembly 420 can be used as the driving roller, and the other roller shaft 500 can be used as the driven roller. When the driving member 310 drives the gear set 320 to operate, the gear set 320 and the corresponding clutch assembly 420 can drive the roller shaft 500 serving as the driving roller to rotate, thereby driving the carbon tape to move. The roller shaft 500 serving as the driven roller can rotate driven by the carbon tape. In some embodiments, the driving member 310 can be selected as a motor.

[0093] In some other embodiments, it is not excluded that the rotating shafts 421 of both clutch assemblies 420 are drivingly connected to the driving member 310 through the gear set 320.

[0094] As Figure 2 shown, in some embodiments, the actuator 200 can be the rubber roller shaft sleeve at the end of the rubber roller in the printer 1000. In the embodiment, by using the rubber roller shaft sleeve as the actuator 200 for driving the transmission assembly 410 to act, the internal structure of the printer 1000 can be simplified, the space utilization rate can be improved, and the material cost of the printer 1000 can also be saved.

[0095] In some other embodiments, the actuator 200 can also be structures such as the rubber roller or the bump in the printer 1000.

[0096] In summary, for the transmission mechanism provided in the embodiment, the transmission assembly 410 can be used to push the clutch assembly 420 to be connected to the corresponding alignment roller shaft 500, which facilitates the operation of the user and reduces the problems of jamming and seizure of the clutch assembly 420. At the same time, the transmission mechanism has a simple structure and can optimize the internal structure of the printer 1000.

[0097] As Figure 1 shown, an embodiment also provides a printer 1000, which may include the transmission mechanism provided in the embodiment.

[0098] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0099] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A transmission mechanism, characterized in that, it includes a housing unit (100), an actuator (200), a driving member (310), a transmission unit (400) and at least one roller shaft (500); The housing unit (100) includes a first housing (110) and a second housing (120) that can be connected in a covering manner; The at least one roller shaft (500) is rotatably installed on the first housing (110), and the actuator (200) is installed on the second housing (120); The transmission unit (400) and the driving member (310) are installed on the first housing (110), the transmission unit (400) includes a transmission assembly (410) and at least one clutch assembly (420) that are transmission-connected, and at least one of the clutch assemblies (420) is transmission-connected to the driving member (310); When the first housing (110) and the second housing (120) are connected in a covering manner, the actuator (200) is used to drive the transmission assembly (410) to act, so as to drive the at least one clutch assembly (420) to be connected to the at least one roller shaft (500) one by one, and make at least one of the clutch assemblies (420) be transmission-connected between the roller shaft (500) it is connected to and the driving member (310).

2. The transmission mechanism according to claim 1, characterized in that, the transmission mechanism includes two of the roller shafts (500), the transmission unit (400) includes two of the clutch assemblies (420), and the transmission assembly (410) is transmission-connected to the two clutch assemblies (420); When the first housing (110) and the second housing (120) are connected in a covering manner, the actuator (200) is used to drive the transmission assembly (410) to act, so as to drive the two clutch assemblies (420) to be connected to the two roller shafts (500) one by one, and make at least one of the clutch assemblies (420) be transmission-connected between the roller shaft (500) it is connected to and the driving member (310).

3. The transmission mechanism according to claim 1 or 2, characterized in that, the transmission assembly (410) includes a rotating wheel (411) and a sliding block (412) that are transmission-connected; The rotating wheel (411) is rotatably installed on the first housing (110), and the rotation axis of the rotating wheel (411) is parallel to the rotation axis of the roller shaft (500); The sliding block (412) is slidably installed in the first housing (110) and has a forward sliding direction. The roller shaft (500) is arranged at the end of the sliding block (412). The end of the sliding block (412) is provided with a driving part (4122). The clutch assembly (420) is in inclined surface cooperation with the driving part (4122), and the driving part (4122) is located on the upstream side of the corresponding clutch assembly (420) in the forward sliding direction; When the first housing (110) is covered and connected to the second housing (120), the actuator (200) is configured to drive the rotating wheel (411) to rotate in the forward rotation direction, and drive the sliding block (412) to slide in the forward sliding direction, so that the driving portion (4122) drives the clutch assembly (420) to be connected to the corresponding roller shaft (500).

4. The transmission mechanism according to claim 3, wherein, a first inclined surface (41221) is disposed on a side of the driving portion (4122) close to the corresponding clutch assembly (420), and a second inclined surface (4221) parallel and fitting to the first inclined surface (41221) is disposed on the clutch assembly (420); The first inclined surface (41221) is inclined gradually in a direction approaching the corresponding roller shaft (500) from an end close to the corresponding clutch assembly (420) to an end far from the corresponding clutch assembly (420).

5. The transmission mechanism according to claim 3, wherein, a first abutting block (4121) is protrudingly disposed on a side of the sliding block (412) close to the rotating wheel (411); a second abutting block (4111) is disposed on a side of the rotating wheel (411) close to the sliding block (412); When the rotating wheel (411) rotates in the forward rotation direction, the second abutting block (4111) abuts against the first abutting block (4121) and pushes the sliding block (412) to move in the forward sliding direction.

6. The transmission mechanism according to claim 3, wherein, the transmission assembly (410) further includes a first reset elastic member (413), the first reset elastic member (413) is connected between the sliding block (412) and the first housing (110), and the sliding block (412) includes a first state position and a second state position; When the sliding block (412) is in the second state position, the clutch assembly (420) is connected to the roller shaft (500) under the action of the sliding block (412), and elastic potential energy for driving the sliding block (412) to switch from the second state position to the first state position is stored in the first reset elastic member (413).

7. The transmission mechanism according to claim 6, wherein, a driving block (4112) for receiving the actuator (200) is further disposed on the rotating wheel (411); a limiting groove (112) for clamping the actuator (200) is formed on the first housing (110); When the first housing (110) is covered and connected to the second housing (120), the actuator (200) is clamped in the limiting groove (112) and abuts against the upstream side of the driving block (4112).

8. The transmission mechanism according to claim 1, wherein, The clutch assembly (420) comprises a rotating shaft (421) and an adapter sleeve (422); the rotating shaft (421) is rotatably mounted on the first housing (110) and is coaxially opposed to the corresponding roller shaft (500); the adapter sleeve (422) is slidably sleeved on the rotating shaft (421) and is in circumferential phase with the rotating shaft (421); the rotating shaft (421) of at least one clutch assembly (420) is drivingly connected to the driving member (310); When the actuator (200) drives the transmission assembly (410) to move, the transmission assembly (410) drives the adapter sleeve (422) to slide along the rotating shaft (421) and connect with the corresponding roller shaft (500).

9. The transmission mechanism according to claim 8, It is characterized in that The clutch assembly (420) further comprises a second resetting elastic member (423), wherein the second resetting elastic member (423) is connected to the adapter sleeve (422), and the second resetting elastic member (423) is used to drive the adapter sleeve (422) to move in a direction away from the corresponding roller shaft (500).

10. A printer, It is characterized in that Comprising a transmission mechanism as claimed in any one of claims 1 to 9.

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