Linkage device for printer, printer, and medical device

Abstract

The embodiment of the invention provides a linkage device for a printer, the printer and a medical device, the linkage device comprises a paper cabin assembly, the paper cabin assembly is provided with a side opening, a base, a paper disc located in the base and a paper pushing piece arranged opposite to the side opening, and the end, opposite to the side opening, of the paper pushing piece is provided with a pushing plate extending upwards; the door assembly is movably connected with the paper cabin assembly and can close or open the side opening; one side of the transmission mechanism is connected with the door assembly, and along with opening of the door assembly, the transmission mechanism drives the paper pushing piece to move in the direction close to the side opening, so that the paper pushing piece pushes paper in the paper tray to move in the direction of the door assembly through the pushing plate. Therefore, the use convenience of the printer can be improved.

Description

Technical Field

[0001] The present application relates to the field of printers, and in particular to a linkage device for a printer, a printer, and a medical device. Background Art

[0002] In daily life, when people handle various types of business, their terminal devices are equipped with printers to print relevant documents and files for customers to keep and use. In addition, since many usage scenarios require portability and miniaturization, the size of printers is gradually decreasing.

[0003] Some medical equipment terminals are also equipped with printers, such as electrocardiogram detection equipment. When printing an electrocardiogram report, the user needs to take out paper from the printer's paper tray. Moreover, when the paper runs out or the printer fails and needs repair, the user needs to put the paper back into the paper tray.

[0004] It should be noted that the above introduction to the technical background is only intended to provide a clear and complete description of the technical solution of the present application and to facilitate understanding by those skilled in the art. Summary of the invention

[0005] The inventors have found that the door opening area of some existing printers used to print documents and reports is too narrow, which makes it difficult for users to take paper from the paper tray. In addition, sharp metal or plastic parts are provided at the opening of, for example, an electrocardiogram report printer, and users can easily scratch their fingers when taking paper in a small space.

[0006] In order to solve the above problems, some existing printers use a method of placing a flexible gasket under the paper to pull the paper out of the paper tray. However, since the flexible gasket is complicated to install and use, and is easily damaged and easily rolled into the printer to cause paper jams, it will also affect the convenience of using the printer.

[0007] In order to solve the above problems or other similar problems, an embodiment of the present application provides a linkage device for a printer, which makes paper output and paper replacement of the printer more convenient.

[0008] According to a first aspect of an embodiment of the present application, a linkage device for a printer is provided, the linkage device comprising:

[0009] A paper compartment assembly, comprising a side opening, a base, a paper tray located in the base, and a paper pusher disposed opposite to the side opening, wherein one end of the paper pusher relative to the side opening has a push plate extending upward;

[0010] a door assembly, which is movably connected to the paper compartment assembly and can close or open the side opening; and

[0011] A transmission mechanism, one side of which is connected to the door assembly. As the door assembly is opened, the transmission mechanism drives the paper pusher to move in a direction close to the side opening, so that the paper pusher pushes the paper in the paper tray towards the door assembly through the push plate.

[0012] According to the second aspect of the embodiments of the present application, the transmission mechanism includes:

[0013] A gear transmission part, which is arranged in the base, and has a gear set, a transmission shaft, and a rack linked with the gear set by the transmission shaft;

[0014] Wherein, at least one gear in the gear set is connected to the door assembly. As the door assembly moves between open and closed states, the gear set drives the transmission shaft to rotate, and then drives the rack to move in the base. The rack is linked with the paper pusher. When the rack moves in the base, the paper pusher also moves in the base accordingly.

[0015] According to the third aspect of the embodiments of the present application, a first gear and a second gear are respectively arranged at one end and the other end of the transmission shaft, and the first gear is connected to the gear set, and the second gear is connected to the rack.

[0016] According to the fourth aspect of the embodiments of the present application, the rack has a stepped part, an extension part, and a connecting part;

[0017] Wherein, the stepped part engages with the transmission shaft, the extension part extends from one end of the stepped part towards the paper pusher, the connecting part extends from one end of the extension part towards the paper pusher and connects the paper pusher, and the width of the connecting part is smaller than the width of the extension part.

[0018] According to the fifth aspect of the embodiments of the present application, the linkage device further includes a rotary lock part, which is arranged in the base, one end of which is connected to the transmission mechanism, and the other end is connected to the paper pusher in an openable and closable manner. The transmission mechanism drives the paper pusher to move through the rotary lock part.

[0019] According to the sixth aspect of the embodiments of the present application, the rotary lock part has: a shaft, a rotary arm, a torsion spring, and a rotary lock;

[0020] The rotary arm, the torsion spring, and the rotary lock are fixed to the other side of the transmission mechanism through the shaft and can rotate around the shaft to realize a rotatable connection with the transmission mechanism.

[0021] According to the seventh aspect of the embodiments of the present application, the paper pusher further has a locking part and a paper bearing part connected to the locking part, and the push plate protrudes upward from the paper bearing part;

[0022] The rotary lock engages with the locking portion to connect the rotary lock portion to the paper pushing member.

[0023] According to the eighth aspect of the embodiments of the present application, the rotary lock has an engaging portion protruding downward from the extending end.

[0024] The locking portion has a recessed portion recessed downward, and the engaging portion engages with the recessed portion.

[0025] The extending ends of the locking portion and the engaging portion of the rotary lock respectively have shape - mating ramps.

[0026] According to the ninth aspect of the embodiments of the present application, the linkage device further includes a boss provided on the base; after the rotary arm of the rotary lock portion moves a certain distance in the direction of the side opening, it can abut against the boss and rotate, thereby releasing the engagement between the rotary lock and the locking portion.

[0027] According to the tenth aspect of the embodiments of the present application, there is a hollow structure between the transmission mechanism and the base, and the boss is accommodated in the hollow structure.

[0028] According to the eleventh aspect of the embodiments of the present application, the linkage device further includes a limiting portion, and the limiting portion is provided at the side - opening end of the base. When the door assembly is opened to a certain extent, the limiting portion can prevent the door assembly from being further opened.

[0029] According to the twelfth aspect of the embodiments of the present application, the paper tray includes: an upper cover and a bottom cover;

[0030] The bottom cover is provided on the base, and a space for accommodating the paper is formed between the upper cover and the bottom cover.

[0031] According to the thirteenth aspect of the embodiments of the present application, the bottom cover is provided with an opening, and the shape of the opening matches the pushing plate of the paper pushing member, so that the pushing plate of the paper pushing member can move within the opening.

[0032] According to the fourteenth aspect of the embodiments of the present application, a printer is provided, and the printer has the linkage device as described in the first aspect to the twelfth aspect.

[0033] According to the fifteenth aspect of the embodiments of the present application, a medical device is provided, and the medical device has the printer as described in the thirteenth aspect.

[0034] According to the sixteenth aspect of the embodiments of the present application, the medical device includes an electrocardiograph.

[0035] One of the beneficial effects of the embodiments of the present application lies in that: according to the linkage device of the printer provided by the embodiments of the present application, when a user uses a printer installed with the linkage device provided by the embodiments of the present application, only by rotating the rotatable door assembly, the movement of the door assembly can be transmitted to the paper. When the user opens the door assembly, the paper is also pushed by the paper pusher to a position close to the side opening. Thus, the user can conveniently take or load paper into the paper tray, improving the convenience of using the printer.

[0036] Reference is made to the following description and the drawings, which disclose in detail specific embodiments of the present application and indicate the ways in which the principles of the present application can be employed. It should be understood that the embodiments of the present application are not limited in scope thereby. Within the spirit and terms of the appended claims, the embodiments of the present application include many variations, modifications and equivalents.

[0037] Features described and / or illustrated for one embodiment can be used in the same or similar way in one or more other embodiments, combined with features in other embodiments, or replace features in other embodiments.

[0038] It should be emphasized that the term "comprising / including" when used herein refers to the presence of features, whole, steps or components, but does not exclude the presence or addition of one or more other features, whole, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings included are used to provide a further understanding of the embodiments of the present application, which form a part of the specification, illustrate the embodiments of the present application, and together with the written description explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. In the drawings:

[0040] Figure 1 is a cross-sectional view of a linkage device for a printer according to an embodiment of the present application;

[0041] Figure 2 is a cross-sectional view of a transmission mechanism of the linkage device according to an embodiment of the present application;

[0042] Figure 3 is a top view from the upper side of the linkage device according to an embodiment of the present application;

[0043] Figure 4 is a schematic diagram of a rack of a transmission mechanism of the linkage device according to an embodiment of the present application;

[0044] Figure 5 is a schematic diagram of the linkage device according to an embodiment of the present application;

[0045] Figure 6 Schematic diagram of the structure of the rotary lock of the linkage device according to an embodiment of the present application;

[0046] Figure 7 Cross-sectional view of the connection between the rotary lock part of the linkage device according to an embodiment of the present application and the rack;

[0047] Figure 8 Schematic diagram of the rotary lock of the linkage device according to an embodiment of the present application engaging with the paper pusher;

[0048] Figure 9 Schematic diagram of the state of the rotary lock of the linkage device according to an embodiment of the present application;

[0049] Figure 10 Schematic diagram of the structure of the linkage device for a printer according to an embodiment of the present application;

[0050] Figure 11 Another schematic diagram of the structure of the linkage device for a printer according to an embodiment of the present application;

[0051] Figure 12 Paper pickup flowchart of a printer installed with the linkage device according to an embodiment of the present application;

[0052] Figure 13 Paper feeding flowchart of a printer installed with the linkage device according to an embodiment of the present application;

[0053] Figure 14 Door closing flowchart of a printer installed with the linkage device according to an embodiment of the present application;

[0054] Figure 15 Schematic diagram of an electrocardiograph installed with the linkage device according to an embodiment of the present application. Detailed implementation manners

[0055] Referring to the accompanying drawings, through the following description, the foregoing and other features of the present application will become apparent. In the description and drawings, specific embodiments of the present application are disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0056] In the embodiments of the present application, the term "and / or" includes any one and all combinations of one or more of the related listed terms. The terms "comprising", "including", "having", etc. mean the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0057] In the embodiments of the present application, singular forms such as "a" and "the" may include plural forms and should be broadly understood as "a kind of" or "a class of" rather than being limited to the meaning of "one"; in addition, the term "the" should be understood to include both singular and plural forms unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least partially according to...", and the term "based on" should be understood as "at least partially based on...", unless the context clearly indicates otherwise.

[0058] The implementation manners of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0059] The embodiments of the present application provide a linkage device for a printer.

[0060] Figure 1 It is a cross-sectional view of the linkage device 10 for a printer according to the embodiments of the present application. As Figure 1 shown, the linkage device 10 provided by the embodiments of the present application includes: a paper cassette assembly 11, a door assembly 12, and a transmission mechanism 13.

[0061] Among them, the paper cassette assembly 11 has a side opening 111, a base 112, a paper tray 113 located in the base 112, and a paper pusher 114 disposed opposite to the side opening 111. At one end of the paper pusher 114 relative to the side opening 111 ( Figure 1 the right end shown in the figure), there is a push plate 118 extending upward, and the paper cassette assembly 11 contains papers 115.

[0062] The door assembly 12 is movably connected to the paper cassette assembly 11 and is used to open or close the side opening 111.

[0063] The transmission mechanism 13 is disposed at a position in the base 112 close to the side opening 111. One side thereof facing the side opening 111 is connected to the door assembly 12. As the door assembly 12 is opened, the transmission mechanism 13 can drive the paper pusher 114 to move in a direction close to the side opening 111, so that the paper pusher 114 can push the papers 115 in the paper tray 113 in the direction of the door assembly 12 through the push plate 118.

[0064] With the above structure, when a user uses a printer installed with the linkage device 10 provided by the embodiments of the present application, only by operating the rotatable door assembly 12, for example, pressing the door assembly 12, the movement of the door assembly 12 can be transmitted to the papers 115 in the paper tray 113. When the user opens the door assembly 12, the papers 115 are also pushed by the push plate 118 of the paper pusher 114 to a position close to the side opening 111. Thus, the user can conveniently take or load papers into the paper tray, improving the convenience of using the printer.

[0065] In the embodiments of the present application, the manner in which the door assembly 12 is movably connected to the paper cassette assembly 11 can be diverse. In some embodiments, the door assembly 12 is mounted on the base 112 and is configured to be rotatable within a certain range about the connection point with the base 112 as the central axis. When in use, when the user applies an external force to rotate the door assembly 12 until it contacts the paper cassette assembly 11, it can be engaged with the paper cassette assembly 11 through an engaging device such as a door lock, thereby closing the side opening 111. The door assembly 12 can also be separated from the paper cassette assembly 11 by the external force applied by the user, thereby opening the side opening 111.

[0066] In some embodiments, the door assembly 12 can be engaged and locked with the paper cassette assembly 11 through a door lock. In addition, the door assembly 12 can also be locked with the paper cassette assembly 11 through other structures, such as torsion springs, interference fits, etc. The present application does not limit this, and specific references can be made to the related technologies in this field, which will not be elaborated here.

[0067] In some embodiments, in order to limit the movement range of the transmission mechanism 13 and the paper pushing member 114 within the base 112, a limiting portion 1122 is further provided on the base 112 of the linkage device 10 in the embodiments of the present application. The limiting portion 1122 can be provided at the side opening 111 end of the base 112. When the door assembly 12 is opened to a certain extent, the limiting portion 1122 can prevent the door assembly 12 from being further opened, thereby preventing the transmission mechanism 13 from moving further out of the side opening 111, which can prevent the transmission mechanism 13 from being pulled out of the base 112.

[0068] In some embodiments, the transmission mechanism is achieved through gear transmission. The present application is not limited to this, and the transmission mechanism can also be achieved through known technologies in this field such as link transmission and / or belt transmission, unless otherwise specified in the present application, as long as the opening and closing actions of the door assembly 12 can be transmitted to the paper pushing member 114. In the following description, the case where the transmission mechanism is achieved through gear transmission will be taken as an example for illustration.

[0069] Figure 2 is a cross-sectional view of the transmission mechanism 13 of the linkage device 10 in the embodiments of the present application; as Figure 1 and Figure 2 shown, the transmission mechanism 13 includes a gear transmission portion provided within the base 112, and the gear transmission portion has a gear set 131, a transmission shaft 132, and a rack 133 linked to the gear set 131 by the transmission shaft 132.

[0070] Figure 3 is a top view from the upper side of the linkage device 10 in the embodiments of the present application. As Figure 2 and Figure 3As shown, at least one gear in the gear set 131 is connected to the door assembly 12. As the door assembly 12 moves between open and closed positions, the gear set 131 further drives the transmission shaft 132 to rotate, and the transmission shaft 132 can then drive the rack 133 to move within the base 112. Specifically, as Figure 3 shown, a first gear 134-1 and a second gear 134-2 are respectively provided at one end and the other end of the transmission shaft 132. Moreover, one end of the transmission shaft 132 is engaged with the gear set 131 through the first gear 134-1, and the other end of the transmission shaft 132 is engaged with the rack 133 through the second gear 134-2. Thus, when the gear set 131 rotates as the door assembly 12 moves between open and closed positions, the transmission shaft 132 rotates together with the gear set 131 through the first gear 134-1, and further transmits this rotation to the rack 133 through the second gear 134-2, thereby driving the rack 133 to move within the base 112.

[0071] With the above structure, the rack 133 can be linked with the paper pusher 114. When the rack 133 moves within the base, the paper pusher 114 also moves within the base 112 accordingly. Thus, the paper pusher 114 can push the paper 115 out of the side opening 111 by means of the push plate 118.

[0072] In addition, as Figure 3 shown, the gear set 131 is provided at the edge of the base 112, while the rack 133 and the paper pusher 114 are provided at a position closer to the middle inside the base 112. The gear set 131 and the rack 133 are connected and driven through the transmission shaft 132, thereby making the structure of the transmission mechanism 13 more flexible and enabling the push plate 118 of the paper pusher 114 to push the paper more stably at the middle position.

[0073] In the above embodiment, as Figure 1 and Figure 2 shown, taking the gear set 131 including three gears as an example, the present application is not limited thereto. The connection structure of the gear set 131 is only an example. In specific applications, different gear set connection structures can be adopted according to printers of different sizes. For example, a gear set 131 can be composed of one gear, or a gear set 131 can be composed of more than three gears, etc. Moreover, in the above embodiment, the length of the transmission shaft 132 is set according to the position of the rack 133. In specific implementations, it can also be adjusted according to the size of the printer and / or the position of the rack 133. The present application does not limit this, and specific details can refer to the relevant technologies in the art and will not be elaborated here.

[0074] In the above embodiment, as Figure 3As shown, taking the drive shaft 132 engaging with the gear set 131 and the rack 133 through two gears (the first gear 134-1 and the second gear 134-2) respectively as an example, the present application is not limited thereto. The drive shaft 132 can also be connected to the gear set 131 and the rack 133 through other structures, such as being connected through a connecting rod and / or a transmission belt, as long as the rotation of the gear set 131 can be transmitted to the rack 133 to cause the rack 133 to drive the paper pusher 114 to move.

[0075] Figure 4 is a schematic diagram of the rack 133 of the transmission mechanism 13 of the linkage device 10 in an embodiment of the present application; as Figure 4 shown, in some embodiments, the rack 133 has a stepped portion 135, an extension portion 136, and a connecting portion 137.

[0076] In the above embodiment, the stepped portion 135 engages with the second gear 134-2 of the drive shaft 132, and the extension portion 136 extends from one end of the stepped portion 135 ( Figure 4 the right end of the stepped portion 135 shown) in the direction close to the paper pusher 114. The connecting portion 137 extends from one end of the extension portion 136 ( Figure 4 the right end of the extension portion 136 shown) in the direction close to the paper pusher 114 and connects to the paper pusher 114. Moreover, the width of the connecting portion 137 is smaller than the width of the extension portion 136. This setting is to ensure that when the connecting portion 137 connects to the paper pusher 114, the parts arranged at the width position of the connecting portion 137 will not interfere with some positioning structures arranged inside the base 112, such as baffles, etc., so that the rack 133 can drive the paper pusher 114 to slide inside the base 112 more smoothly.

[0077] In the above embodiment, taking the example that the components connecting the paper pusher 114 are connected on the left and right sides in the width direction of the connecting portion 137, in other embodiments, the components connecting the paper pusher 114 are connected to the connecting portion 137 in other ways. Thus, the width of the connecting portion 137 can also be the same as the width of the extension portion 136, as long as it does not affect the connection between the connecting portion 137 and the paper pusher 114.

[0078] Figure 5 is a schematic diagram of the linkage device 10 in an embodiment of the present application; as Figure 5 shown, in some embodiments, a rotation lock portion 14 is further provided at the connection position between the rack 133 and the paper pusher 114. The rotation lock portion 14 is arranged such that one end is connected to the transmission mechanism 13, for example, connected to the connecting portion 137 of the rack 133 of the transmission mechanism 13, and the other end is connected to the paper pusher 114 in an openable and closable manner.

[0079] In the above embodiment, the transmission mechanism 13 drives the paper pusher 114 to move through the rotation lock portion 14.

[0080] Specifically, the transmission mechanism 13 transmits the opening and closing movement of the door assembly 12 to the rotary lock portion 14, causing the rotary lock portion 14 to be connected to or separated from the paper pusher 114, thereby realizing the movement of the paper pusher 114. Figure 5 The figure shows the case where the rack 133 is connected to the paper pusher 114. The process of connection and separation between the rotary lock portion 14 and the paper pusher 114 will be described in the following content.

[0081] Figure 6 It is a schematic structural diagram of the rotary lock portion 14 of the linkage device 10 according to an embodiment of the present application. As Figure 6 shown, in some embodiments, the rotary lock portion 14 includes: a shaft 141, a rotary arm 142, a torsion spring 143, and a rotary lock 144.

[0082] In the above embodiment, the rotary arm 142, the torsion spring 143, and the rotary lock 144 are fixed to the other side of the transmission mechanism 13 through the shaft 141 and can rotate around the shaft 141, thereby realizing the rotatable connection with the transmission mechanism 13.

[0083] Figure 7 It is a cross-sectional view of the rotary lock portion 14 of the linkage device 10 according to an embodiment of the present application connected to the rack 133; as Figure 6 and Figure 7 shown, in some embodiments, a through hole penetrating the connecting portion 137 is provided in the width direction of the connecting portion 137 of the rack 133, and the rotary lock 144 has an opening, the width of which is slightly larger than the width of the connecting portion 137. Thus, the connecting portion 137 can be snapped into the opening of the rotary lock 144, and the shaft 141 penetrates the through holes of the rotary lock 144 and the connecting portion 137 to fix the two.

[0084] In the above embodiment, as Figure 7 shown, a torsion spring 143 and a rotary arm 142 are further provided on the shaft 141 within the opening of the rotary lock 144, and E-shaped rings E are provided on both sides of the shaft 141 (outside the opening of the rotary lock 144), fixing the rotary lock portion 14 to the connecting portion 137 of the rack 133 in a manner that can rotate around the shaft 141.

[0085] In the above embodiment, the shaft 141 uses a D-shaped shaft to connect the components, but the present application is not limited thereto. For example, the shaft 141 can also use other non-conventional cylindrical shafts, or a cylindrical shaft can be fixed by welding.

[0086] Figure 8 It is a schematic diagram of the rotary lock portion 14 of the linkage device 10 according to an embodiment of the present application being engaged with the paper pusher 114; as Figure 8As shown, in some embodiments, the paper pusher 114 further has a locking portion 116 and a paper supporting portion 117 connected to one end of the locking portion 116. The push plate 118 protrudes upward from the other end of the paper supporting portion 117 ( Figure 8 the right end shown).

[0087] In the above embodiments, the rotary lock 144 is engaged with the locking portion 116 to connect the rotary lock portion 14 to the paper pusher 114.

[0088] In a possible implementation, as Figure 7 and Figure 8 shown, the rotary lock 144 has an engaging portion 145 protruding downward from the extending end. The locking portion 116 has a recessed portion 119 recessed downward. With the above structure, when the rotary lock 144 is connected to the locking portion 116, the engaging portion 145 is engaged with the recessed portion 119. Thus, the locking and separation between the two are achieved.

[0089] Figure 9 is a state schematic diagram of the rotary lock 144 of the linkage device 10 according to an embodiment of the present application; as Figure 9 shown, the rotary lock 144 and the locking portion 116 have a separated state A and a locked state B.

[0090] In a possible implementation, as Figure 9 shown, the extending ends of the extending end of the locking portion 116 and the engaging portion 145 of the rotary lock 144 respectively have shape-matching slopes S1 and S2.

[0091] In the above embodiments, as Figure 9 shown, since the rotary lock portion 14 is fixed to the rack 133, during the movement of the rotary lock 144 of the rotary lock portion 14 along with the rack 133, the rotary lock 144 will approach or move away from the paper pusher 114. When the rotary lock 144 contacts the paper pusher 114, the slope S2 at the end of the engaging portion 145 contacts the slope S1 at the end of the locking portion 116. By the force of the movement of the rack 133, the engaging portion 145 slides along the slope in the direction towards the paper pusher 114, and then the engaging portion 145 slides past the slope S1 of the locking portion 116 and is engaged with the recessed portion 119. Thus, the locked state B of the rotary lock 144 and the locking portion 116 is achieved.

[0092] In the above embodiments, as Figure 9 shown, the linkage device 10 further includes a boss 1121 provided on the base 112. After the rotary arm 142 of the rotary lock portion 14 moves a certain distance in the direction of the side opening 111, it can abut against the boss 1121 and rotate, thereby releasing the engagement between the rotary lock 144 and the locking portion 116. Thus, the separated state A of the rotary lock 144 and the locking portion 116 is achieved.

[0093] In the above embodiments, as Figure 9 shown, the boss 1121 is provided as a slope protruding in a direction away from the paper pushing member 114. However, the present application is not limited thereto, and the boss 1121 may also be, for example, a protrusion having an inclined angle.

[0094] In the above embodiments, as Figure 1 and Figure 9 shown, in a possible implementation, there is a hollow structure between the transmission mechanism 13 and the base 112, and the boss 1121 is accommodated in the hollow structure. The present application is not limited thereto, and the boss 1121 may also be provided on the base 112 in other ways.

[0095] In the above embodiments, when the rack 133 moves in the direction of the side opening 111, when one end of the rotating arm 142 abuts against the boss 1121, the inclination angle of the rotating arm 142 changes, thereby providing a force for the torsion spring 143 to deform. The torsion spring 143 further provides a force for the rotary lock 144 to lift the end connected to the paper pushing member 114. Thus, the engaging portion 145 is separated from the recessed portion 119, thereby releasing the engagement between the rotary lock 144 and the locking portion 116.

[0096] In some embodiments, as Figure 1 and Figure 9 shown, a boss 1123 is further provided on the base 112. The boss 1123 can clamp the extending portion 136 of the rack 133, especially clamp the extending portion 136 of the rack 133 between the boss 1121 of the base 112 and the paper tray 113, so that the rack 133 can move stably within the base 112.

[0097] Thus, by means of the force provided by the opening and closing movement of the door assembly 12, the separation and connection of the transmission mechanism 13 and the paper pushing member 114 can be achieved, and further, the paper pushing member 114 can be driven to move through the transmission mechanism 13, thereby pushing the paper 115 to move back and forth, realizing paper pickup and paper delivery. The structure is simple, and the paper pickup when using the printer can be made more convenient.

[0098] Figure 10 is a schematic structural diagram of the linkage device 10 for a printer according to an embodiment of the present application. As Figure 10 shown, in some embodiments, the paper tray 113 includes: an upper cover 1131 and a bottom cover 1132; wherein, the upper cover 1131 is fixed on the base 112 to form an accommodation space with the base 112, and the bottom cover 1132 is arranged within the base 112, and the paper pushing member 114 is located between the base 112 and the bottom cover 1132 of the paper tray 113.

[0099] Figure 11 is another schematic structural diagram of the linkage device 10 for a printer according to an embodiment of the present application; as Figure 10 and11 As shown, in some embodiments, the bottom cover 1132 of the paper tray 113 is provided with an opening H, and the shape of the opening H matches that of the pushing plate 118 of the paper pusher 114. For example, the width of the opening H matches the width of the pushing plate 118, so that the pushing plate 118 can move within the opening H.

[0100] In the above embodiments, there is no limitation on the length of the opening H, which can be set according to the distance of the paper 115 to be pushed out as needed. In addition, in the above embodiments, there is no limitation on the height of the pushing plate 118 either, as long as it is lower than the height of the base 112, thus avoiding interference with the upper cover 1131.

[0101] Through the linkage device 10 provided by the above embodiments of the present application, only by rotating the rotatable door assembly 12, the movement of the door assembly 12 can be transmitted to the paper 115 in the paper tray 113. When the user opens the door assembly 12, the paper 115 is also pushed out by the paper pusher 114 to a position close to the side opening 111. Thus, the user can conveniently take or load paper into the paper tray, improving the convenience of using the printer.

[0102] In addition, through the linkage device 10 provided by the above embodiments of the present application, when the user takes paper, since the paper 115 is partially pushed out of the side opening 111 by the paper pusher 114, the user does not need to put his hand into the side opening 111 to take paper, thus avoiding the risk of being scratched by the sharp metal or plastic parts provided in the paper outlet cabin assembly of the side opening 111.

[0103] In addition, most of the transmission mechanisms of the linkage device 10 provided by the present application are hidden between the bottom cover 1132 of the paper tray 113 and the base 112. The structure is simple, and the processes of paper loading and paper taking can be completed without additional replacement of parts. The operation is simpler and the use is more convenient.

[0104] Next, the usage process of the linkage device provided by the embodiments of the present application will be described.

[0105] Figure 12 is the paper taking flow chart of the printer installed with the linkage device 10 of the embodiments of the present application; as Figure 12 shown, in the paper taking process:

[0106] In the state of S1, the door assembly is initially in a fully closed state, and the door assembly is engaged with the paper cabin assembly. At this time, the linkage device is in a static state, the rotation lock is engaged with the paper pusher, and the rotation lock part is in a connected state with the paper pusher;

[0107] In the state of S2, the linkage device is in the process of opening the door. When opening the door, the gear of the door assembly will drive the gear set of the transmission mechanism to rotate, and the gear of the gear set engaged with the transmission shaft will drive the transmission shaft to rotate, and then drive the rack to move as shown inFigure 12 In the direction indicated by the arrow in the figure, i.e., moving in the direction of the door assembly. The rack further drives the shaft of the rotary lock portion and the rotary lock connecting the shafts to move together in the direction of the door assembly. During this process, since the rotary lock is connected to the paper pusher, and the rotary lock is engaged with the locking portion, therefore, the paper pusher also moves in the direction of the rack door assembly, and the push plate of the paper pusher pushes the paper to move together. At this time, the paper pusher can push out the paper.

[0108] In the state of S3, the door assembly is opened to the maximum.

[0109] As Figure 12 shown, a limiting portion is further provided on the base. The limiting portion can be provided at the side opening end of the base. When the door assembly is opened to a certain extent, the limiting portion can prevent the door assembly from being further opened, thereby preventing the transmission mechanism from moving further outside the side opening. This can prevent the excessive rotation of the door and the pulling out of the transmission mechanism outside the base.

[0110] That is to say, the maximum position where the door assembly is opened is the position where the rack abuts against the limiting portion. At this time, the rotating arm abuts against the boss provided on the base, and the rotating arm rotates. And since the rotating arm and the rotary lock are fixed by the D shaft and the two remain relatively stationary and rotate together, therefore, the rotary lock rotates as the rack moves. At this time, the rotary lock rotates in the direction of the arrow shown in the figure, and then separates from the paper pusher, and both the paper pusher and the paper stop moving outwards.

[0111] However, since one end of the paper near the side opening is in the C position as Figure 12 shown, that is to say, the paper has been pushed out of the side opening at this time, and the user can take the paper from this C position without putting the hand into the side opening.

[0112] Through the above paper-taking process, when the user uses the printer equipped with the linkage device of the embodiment of the present application, the user can take the paper more conveniently, and also avoids the risk of finger scratching.

[0113] When using the printer, when the paper in the paper tray is used up and it is necessary to put the paper into the paper tray of the printer, through the linkage device provided by the embodiment of the present application, the paper can also be loaded into the paper tray more conveniently. Next, the paper loading process will be described.

[0114] Figure 13 is the paper loading flowchart of the printer equipped with the linkage device 10 of the embodiment of the present application; as Figure 13 shown, in the paper loading process:

[0115] In the state of S4, the printer and the linkage device are in the state when the user is ready to put the paper into the paper tray.

[0116] As Figure 13As shown, the initial state of the printer is that the door assembly is opened to the maximum. And since the rotary lock and the paper pusher plate are in an unlocked and separated state at this time, when the user puts paper into the paper tray, only the paper pusher can be used to push the paper, that is, the paper and the paper pusher are pushed back to the state where the push plate of the paper pusher abuts against the base, and the door assembly will not be driven to close.

[0117] In the state of S5, when the user completely puts in the paper, as Figure 13 shown, both the paper and the paper pusher are pushed back to the innermost side of the base, but at this time the door assembly is still in the state of being opened to the maximum.

[0118] It should be noted that at this time the rotary arm still remains in the state of abutting against the boss of the base, so the rotary lock also remains in the raised state.

[0119] In the state of S6, after loading the paper, prepare to close the door assembly.

[0120] After the paper is placed, the door assembly is ready to close. The gear on the door assembly drives the gear set to rotate, and then drives the rack, the rotary arm and the rotary lock to move into the base. Since the rack starts to move inward, the rotary arm also starts to slide down along the slope of the boss. Due to the sudden drop in the height of the sliding track at the bottom of the rotary arm, under the action of the torsion spring, the rotary arm rotates counterclockwise, that is, in accordance with Figure 13 the arrow direction shown, and at this time, the rotary lock returns to the horizontal state.

[0121] Through the above paper loading process, when the user uses the printer equipped with the linkage device of the embodiment of the present application, there is no need to install additional parts such as paper films, and the paper can be conveniently loaded into the paper tray.

[0122] In actual operation, when the printer is not needed, such as after the paper taking and placing operations are completed, or when the printer is powered off and closed, a door closing operation needs to be performed.

[0123] Figure 14 is the door closing flow chart of the printer equipped with the linkage device 10 of the embodiment of the present application; as Figure 14 shown, in the door closing process:

[0124] In the state of S7, the door assembly is in the state of being about to close.

[0125] At this time, the door assembly, the transmission mechanism and the rotary lock continue to move to the right, that is, in the direction shown by the right arrow in Figure 14 . At this time, the paper pusher still remains at the innermost side of the base. And since the engaging part of the rotary lock and the end of the multi-locking part of the paper pusher both have pre-set slopes with a shape fit, when the rotary lock contacts the paper pusher, the rotary lock will first rotate counterclockwise, that is, towards Figure 14The rotary lock is rotated in the direction indicated by the curved arrow in the figure. At this time, the rotary lock is slightly lifted, so that the engaging portion of the rotary lock moves further inward.

[0126] In the state of S8, the door assembly is in a state when it is fully closed.

[0127] When the door assembly is fully closed, the door assembly is engaged with the paper compartment assembly, the side opening is closed, and the engaging portion of the rotary lock and the locking portion of the paper pusher further slide to the end of the slope. That is to say, in the process of the rotary lock moving inward, the slopes of the engaging portion and the locking portion will slide to a position where the two are no longer in contact. At this time, the rotary lock falls under the action of the torsion spring, whereby the engaging portion falls back into the recessed portion of the locking portion, that is, the rotary lock portion is reconnected to the paper pusher.

[0128] At this time, the linkage device for the printer provided in the embodiment of the present application is restored to the initial state.

[0129] The linkage device provided in the embodiment of the present application has a simple structure, so that the customer can conveniently complete the operations of taking and putting paper in the printer by only operating the opening and closing of the door assembly. In this process, no additional auxiliary components are required, thereby avoiding the risk of foreign objects being drawn into the printer and causing paper jams and other faults.

[0130] It is worth noting that the above only describes the structure and function of the linkage device for the printer related to the present application. The linkage device for the printer may also include other components and have other functions. For details, please refer to the relevant technology and will not be repeated here.

[0131] In daily life, there are many situations where small receipt and document printers are needed, and some miniaturized printers have very small openings. In other cases, miniaturized printers are provided with sharp parts at the opening. Through the linkage device provided in the embodiment of the present application, even when using a printer with a narrow opening, such as an electrocardiogram report printer, there is no need to put your hand into the printer opening, which is more convenient for users to operate. When using a printer with sharp parts, the risk of scratching fingers can also be avoided.

[0132] The embodiment of the present application also provides a printer having the linkage device described in the previous embodiment.

[0133] Since the structure of the linkage device has been described in detail in the above embodiment, its content is incorporated here and the description is omitted here. For other structures and functions of the printer, reference can be made to the relevant technology and no further description is given here.

[0134] The present application also provides a medical device having the printer described in the previous embodiment. The medical device includes, for example, an electrocardiograph, etc. Figure 15An exemplary description will be given.

[0135] Figure 15 FIG. 1 is a schematic diagram of an electrocardiograph 30 equipped with the linkage device of the embodiment of the present application. As Figure 15 shown, the electrocardiograph 30 includes an electrocardiogram measurement component 20 and a printer. Moreover, the electrocardiogram measurement component 20 and the printer can be integrally formed through the same housing. The printer is equipped with the linkage device provided by the embodiment of the present application. Among them, the paper cassette assembly 11, the door assembly 12, and a paper tray 113 for accommodating paper (not shown) can be installed on the printer of the electrocardiograph 30 in a manner as Figure 15 shown.

[0136] Due to the requirements of portability for some existing electrocardiographs (for example, Figure 15 the integrated electrocardiograph 30 shown in FIG. 1), they need to be small and lightweight, resulting in a reduction in the overall volume of the printer and the side opening area for paper output. By installing the linkage device provided by the embodiment of the present application, it is possible to safely and conveniently complete operation processes such as printing, paper taking, and paper placing even when the side opening area of the printer is small. Moreover, the structure of the linkage device is simple, improving the convenience of installation and use, and thus being able to improve the user experience.

[0137] Regarding other components and functions of the electrocardiograph and its integrated printer, reference can be made to any relevant technologies in the art. For example, the electrocardiogram measurement component 20 may include: any circuits and sensors required for electrocardiogram signal measurement, a memory storing electrocardiogram measurement algorithms, a display for displaying electrocardiogram measurement results, a battery for providing power required for measurement, calculation, and display functions, etc. In addition, in addition to including the Figure 15 linkage device shown in FIG. 1, the printer also includes any other necessary components for performing the printing function. Details are not described herein. In addition, although Figure 15 the embodiment of FIG. 1 is described by taking an electrocardiograph as an example, the present application is not limited thereto. Other types of medical devices, such as integrated medical devices, are equally applicable to any of the above embodiments of the present application. Each of the above embodiments only gives an exemplary description of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can also be made on the basis of the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0138] The embodiments of the present application have been described above in conjunction with specific implementation manners, but those skilled in the art should clearly understand that these descriptions are all exemplary and do not limit the protection scope of the embodiments of the present application. Those skilled in the art can make various modifications and variations to the embodiments of the present application according to the spirit and principle of the embodiments of the present application, and these modifications and variations are also within the scope of the embodiments of the present application.

[0139] The preferred embodiments of the embodiments of the present application have been described above with reference to the accompanying drawings. Many features and advantages of these embodiments are apparent from this detailed description, and thus the appended claims are intended to cover all such features and advantages that fall within the true spirit and scope of these embodiments. In addition, since many modifications and changes are readily envisioned by those skilled in the art, the embodiments of the embodiments of the present application are not to be limited to the exact structures and operations illustrated and described, but may cover all suitable modifications and equivalents that fall within their scope.

Claims

1. A linkage device for a printer, characterized in that, The linkage device includes: A paper bin assembly, which has a side opening, a base, a paper tray located within the base, and a paper pusher disposed opposite to the side opening. One end of the paper pusher relative to the side opening has a push plate extending upward; A door assembly, which is movably connected to the paper bin assembly and can close or open the side opening; and A transmission mechanism, one side of which is connected to the door assembly. As the door assembly opens, the transmission mechanism drives the paper pusher to move in a direction closer to the side opening, such that the paper pusher pushes the paper in the paper tray in the direction of the door assembly through the push plate.

2. The linkage device according to claim 1, wherein The transmission mechanism includes: A gear transmission part, which is disposed within the base and has a gear set, a transmission shaft, and a rack linked to the gear set by the transmission shaft; Wherein, at least one gear in the gear set is connected to the door assembly. As the door assembly moves between open and closed states, the gear set drives the transmission shaft to rotate, thereby driving the rack to move within the base. The rack is linked to the paper pusher. When the rack moves within the base, the paper pusher also moves within the base accordingly.

3. The linkage device according to claim 2, wherein, One end and the other end of the transmission shaft are respectively provided with a first gear and a second gear, and the first gear is connected to the gear set, and the second gear is connected to the rack.

4. The linkage device according to claim 3, characterized in that The rack has a step portion, an extension portion, and a connecting portion; Wherein, the step portion engages with the transmission shaft, the extension portion extends from one end of the step portion in a direction closer to the paper pusher, and the connecting portion extends from one end of the extension portion in a direction closer to the paper pusher and connects to the paper pusher. The width of the connecting portion is smaller than the width of the extension portion.

5. The linkage device according to claim 1, characterized in that, The linkage device further includes a rotary lock portion, which is disposed within the base, one end is connected to the transmission mechanism, and the other end is connected to the paper pusher in an openable and closable manner. The transmission mechanism drives the paper pusher to move through the rotary lock portion.

6. The linkage device according to claim 5, wherein The rotary lock portion has: a shaft, a rotary arm, a torsion spring, and a rotary lock; The rotary arm, the torsion spring, and the rotary lock are fixed to the other side of the transmission mechanism through the shaft and can rotate around the shaft to achieve a rotatable connection with the transmission mechanism.

7. The linkage device according to claim 6, characterized in that, The paper pusher further has a locking portion and a paper supporting portion connected to the locking portion, and the push plate protrudes upward from the paper supporting portion; The rotary lock engages with the locking portion to achieve the connection between the rotary lock portion and the paper pusher.

8. The linkage device according to claim 7, wherein The rotary lock has an engaging portion protruding downward from the extending end; The locking portion has a recessed portion recessed downward, and the engaging portion engages with the recessed portion; The extending ends of the extending end of the locking portion and the engaging portion of the rotary lock respectively have slopes with shape matching.

9. The linkage device according to claim 6, wherein The linkage device further includes a boss provided on the base; after the rotary arm of the rotary lock portion moves a certain distance in the direction of the side opening, it can abut against the boss and rotate, thereby releasing the engagement between the rotary lock and the locking portion.

10. The linkage device according to claim 9, wherein A hollow structure is provided between the transmission mechanism and the base, and the boss is received within the hollow structure.

11. The linkage device according to claim 9, characterized in that, The linkage device further includes a limiting portion disposed at the side opening end of the base. When the door assembly is opened to a certain extent, the limiting portion can prevent the door assembly from being further opened.

12. The linkage device according to claim 1, wherein The paper tray includes: an upper cover and a bottom cover; The bottom cover is disposed on the base, and a space for accommodating the paper is formed between the upper cover and the bottom cover.

13. The linkage device according to claim 12, wherein The bottom cover is provided with an opening, and the shape of the opening matches the pushing plate of the paper pusher, so that the pushing plate of the paper pusher can move within the opening.

14. A printer, characterized in that, The printer has the linkage device according to any one of claims 1 to 13.

15. A medical device, characterized in that, The medical device has the printer according to claim 14.

16. The medical device according to claim 15, characterized in that, The medical device includes an electrocardiograph.

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