Rotating shaft device, printer outer cover, display screen assembly and three-dimensional printer

Abstract

The utility model discloses a rotating shaft device, a printer outer cover, a display screen assembly and a three-dimensional printer, the rotating shaft device is connected with a display screen, when the rotating shaft device is used, the angle of the display screen can be adjusted as required, so that the display screen can be stabilized at any required angle, the adjustment is convenient, and the use is flexible. According to the main technical scheme, the rotating shaft device is applied to the three-dimensional printer and comprises a connecting shaft, the first connecting piece is connected with the connecting shaft; the at least one second connecting piece is rotationally connected to the connecting shaft in a sleeving manner; the gasket assembly comprises an elastic piece, and the elastic piece is movably connected with the connecting shaft; and the locking piece is connected with the connecting shaft, the locking piece is matched with the connecting shaft, and the first connecting piece, the second connecting piece and the elastic piece are extruded in the axial direction of the connecting shaft. The utility model is mainly used for damping rotation connection.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a rotating shaft device, a printer housing, a display screen assembly and a three-dimensional printer. Background Art

[0002] The three-dimensional printer uses filament feeding. The filament is transported from the extruder to the print head, and the molten filament is sprayed according to the contour of the first layer of the model by the relative movement of the print head and the printing platform. After the filament is solidified, the first layer of the model is formed. Then the print head rises by the thickness of one layer of the model, and continues to spray the next layer of the model, layer by layer stacking to achieve three-dimensional forming.

[0003] In a three-dimensional printer, some components need to rotate. There is no damping rotation structure in the existing three-dimensional printers, so the relevant components are still fixedly connected, resulting in the components that need to rotate in the three-dimensional printer being unable to flexibly adjust the rotation angle. For example, the operation screen of the three-dimensional printer is usually fixedly arranged on the base of the three-dimensional printer, resulting in the operation screen being unable to rotate to a suitable angle according to the user's needs, or the operation screen needs to be disassembled from the base, rotated to a suitable angle and then fixed, resulting in inconvenient adjustment of the operation screen. Summary of the Utility Model

[0004] In view of this, to solve at least one of the above technical problems, embodiments of the present utility model provide a rotating shaft device, a printer housing, a display screen assembly and a three-dimensional printer.

[0005] To achieve the above object, the present utility model mainly provides the following technical solutions:

[0006] On the one hand, the present utility model provides a rotating shaft device applied to a three-dimensional printer. The rotating shaft device includes:

[0007] A connecting shaft;

[0008] A first connecting member, the first connecting member is connected to the connecting shaft, and the first connecting member is circumferentially limited to the connecting shaft.

[0009] At least one second connecting member, the second connecting member is rotatably sleeved on the connecting shaft;

[0010] A gasket assembly, the gasket assembly includes an elastic member, and the elastic member is connected to the connecting shaft;

[0011] A locking member, the locking member is connected to the connecting shaft, and the locking member cooperates with the connecting shaft to axially press the second connecting member and the elastic member.

[0012] On the other hand, the present utility model also provides a printer housing, including the rotating shaft device as described in any one of the above, and

[0013] A frame and an opening and closing door, a first connecting member is connected to the frame, a second connecting member is connected to the opening and closing door, and the opening and closing door rotates relative to the frame through a rotating shaft device.

[0014] On the other hand, the present utility model also provides a display screen assembly, including the rotating shaft device of any one of the above, and

[0015] a display screen and a fixing base, the first connecting member is connected to the fixing base, the second connecting member is connected to the display screen, and the display screen rotates relative to the fixing base through the rotating shaft device.

[0016] On another hand, the present utility model also provides a 3D printer, the 3D printer includes the rotating shaft device of any one of the above, or, the printer housing of any one of the above, or, the 3D printer includes the display screen assembly of any one of the above.

[0017] A rotating shaft device, a printer housing, a display screen assembly and a 3D printer proposed by the present utility model mainly realize the angle adjustment of the component to be rotated in the 3D printer by setting the rotating shaft device to connect the component to be rotated. For example, when the component to be rotated is a display screen, during use, the angle of the display screen can be adjusted as needed, so that the display screen can be stably fixed at any required angle, with convenient adjustment and flexible use. At the same time, the rotating shaft device adjusts the extrusion force on the second connecting member through an elastic member, so that the extrusion force received by the second connecting member is appropriate, and it will not have too large a friction force due to excessive extrusion force, thereby avoiding the problem of difficult rotation of the rotating member connected to the second connecting member. At the same time, it will not have insufficient friction force due to too small an extrusion force caused by wear, thereby avoiding the loosening of the second connecting member, ensuring that the rotating member connected to the second connecting member can be stably fixed at the specified position, and the rotating shaft structure of the present application is simple, easy to implement, and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional structure schematic diagram of a rotating shaft device provided by an embodiment of the present utility model;

[0019] Figure 2 A structural schematic diagram of a rotating shaft device provided by an embodiment of the present utility model from a first perspective;

[0020] Figure 3 A structural schematic diagram of a rotating shaft device provided by an embodiment of the present utility model from a second perspective;

[0021] Figure 4 A structural schematic diagram of a rotating shaft device provided by an embodiment of the present utility model from a third perspective;

[0022] Figure 5 A structural schematic diagram of a rotating shaft device provided by an embodiment of the present utility model from a fourth perspective;

[0023] Figure 6 Exploded structural schematic diagram of a rotating shaft device provided by an embodiment of the present utility model;

[0024] Figure 7 Stereoscopic structural schematic diagram of another rotating shaft device provided by an embodiment of the present utility model;

[0025] Figure 8 Exploded structural schematic diagram of another rotating shaft device provided by an embodiment of the present utility model;

[0026] Figure 9 Structural schematic diagram of a display screen assembly in a first perspective when the display screen is in a middle position provided by an embodiment of the present utility model;

[0027] Figure 10 Schematic diagram of an adjustable position of a display screen in a display screen assembly provided by an embodiment of the present utility model;

[0028] Figure 11 Structural schematic diagram of a display screen assembly in a second perspective when the display screen is in a middle position provided by an embodiment of the present utility model;

[0029] Figure 12 Structural schematic diagram of a display screen assembly in a first perspective when the display screen is in a horizontal position provided by an embodiment of the present utility model;

[0030] Figure 13 Structural schematic diagram of a display screen assembly in a second perspective when the display screen is in a horizontal position provided by an embodiment of the present utility model;

[0031] Figure 14 Structural schematic diagram of a display screen assembly in a third perspective when the display screen is in a horizontal position provided by an embodiment of the present utility model;

[0032] Figure 15 Structural schematic diagram of a display screen assembly in a first perspective when the display screen is in a vertical position provided by an embodiment of the present utility model;

[0033] Figure 16 Structural schematic diagram of a display screen assembly in a second perspective when the display screen is in a vertical position provided by an embodiment of the present utility model;

[0034] Figure 17 Structural schematic diagram of a display screen assembly in a third perspective when the display screen is in a vertical position provided by an embodiment of the present utility model;

[0035] Figure 18 First exploded structural schematic diagram of a display screen assembly provided by an embodiment of the present utility model;

[0036] Figure 19 The second exploded structural schematic diagram of a display screen assembly provided by an embodiment of the present invention;

[0037] Figure 20 The third exploded structural schematic diagram of a display screen assembly provided by an embodiment of the present invention;

[0038] Figure 21 The structural schematic diagram of a part of a display screen assembly provided by an embodiment of the present invention from a first perspective;

[0039] Figure 22 The structural schematic diagram of a part of a display screen assembly provided by an embodiment of the present invention from a second perspective;

[0040] Figure 23 The exploded structural schematic diagram of a blockage detection device for a three - dimensional printer provided by an embodiment of the present invention. Detailed implementation manners

[0041] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and effects of the rotating shaft device proposed according to the present invention as follows.

[0042] On the one hand, as Figure 1-8 shown, an embodiment of the present invention provides a rotating shaft device, including:

[0043] A connecting shaft 100;

[0044] A first connecting member 200, the first connecting member 200 is connected to the connecting shaft 100;

[0045] At least one second connecting member 300, the second connecting member 300 is rotatably sleeved on the connecting shaft 100;

[0046] A gasket assembly, the gasket assembly includes an elastic member 400, and the elastic member 400 is connected to the connecting shaft 100;

[0047] A locking member 500, the locking member 500 is connected to the connecting shaft 100, and the locking member 500 cooperates with the connecting shaft 100 to axially squeeze the first connecting member 200, the second connecting member 300, and the elastic member 400.

[0048] The rotating shaft device is used for the connection between a rotating part and a supporting part, which can enable the rotating part to rotate relative to the supporting part and stay at any position within the rotation range. The rotating shaft device has a wide range of application scenarios. For example, it can be used in a 3D printer. The display screen of the 3D printer serves as the rotating part, and positions such as the base of the 3D printer serve as the supporting part, enabling the display screen to rotate relative to the base, etc., and the display screen can optionally stay at any rotating position. When the 3D printer includes an outer cover, the opening and closing door of the outer cover serves as the rotating part, and the frame of the outer cover serves as the supporting part, enabling the opening and closing door to rotate relative to the frame to open and seal the printing space inside the outer cover, and the opening and closing door can optionally stay at any rotating position. In a filament feeding printer, the material tray support can serve as the rotating part, and the gantry or base of the 3D printer serves as the supporting part, enabling the material tray support to rotate relative to the gantry or base to adjust the direction of the material tray. In addition, it can also be applied to other scenarios as needed, which will not be listed one by one.

[0049] The connecting shaft 100 has an approximately cylindrical structure, and the connecting shaft 100 provides support for the first connecting member 200, the second connecting member 300, the gasket assembly, and the locking member 500. The first connecting member 200 can be fixed in the circumferential direction of the connecting shaft 100 relative to the connecting shaft 100, that is, the first connecting member 200 cannot rotate relative to the connecting shaft 100 during use. The first connecting member 200 is used to connect the supporting part, such as connecting the base of the 3D printer or the frame of the outer cover. Alternatively, it can also be that the first connecting member 200 is rotatably connected to the connecting shaft 100. During use, both the first connecting member 200 and the second connecting member 300 rotate relative to the connecting shaft 100 with damping. When the first connecting member 200 and the connecting shaft 100 are fixed in the circumferential direction of the connecting shaft 100, for example, it can be limited by eccentric insertion. Or, in some embodiments, the first connecting member 200 and the connecting shaft 100 can be fixedly connected, such as by welding. Or, in some embodiments, the first connecting member 200 and the connecting shaft 100 can be integrally formed. Or, in some embodiments, the first connecting member 200 and the connecting shaft 100 can be detachably connected, such as detachable sleeving, clamping connection, etc. The second connecting member 300 is rotatably connected to the connecting shaft 100. The second connecting member 300 is used to connect the rotating part, and the axis of the connecting shaft 100 is the rotation axis of the second connecting member 300 or the rotating part. The number of the second connecting members 300 can be only one, and then a single rotating shaft device is used to connect a single rotating part. Or, the number of the second connecting members 300 can be only multiple, and then multiple rotating parts can be connected to a single rotating shaft device. For example, multiple opening and closing doors can be connected to the frame of the outer cover through the same rotating shaft device.

[0050] The elastic member 400 has elasticity in part or all of its area. The locking member 500 presses against the elastic member 400 and the second connecting member 300. The elastic member 400 directly or indirectly applies pressure to the second connecting member 300. Since the elastic member 400 has elasticity, it can then change its shape according to the pressing force of the locking member 500. When the locking degree of the locking member 500 is too large, the elastic member 400 releases part of the pressure through its own deformation. When the second connecting member 300 is worn, the elastic member 400 continuously provides pressure by restoring its shape. The elastic member 400 can provide elastic force by changing its own shape or through material properties. For example, the elastic member 400 can be a spring, foam, rubber, silicone, etc. The elastic member 400 can rotate relative to the connecting shaft 100 following the second connecting member 300, or can be circumferentially limited relative to the connecting shaft 100. However, it can be understood that the elastic member 400 can move axially along the connecting shaft 100, and then the axial pressure can be adjusted.

[0051] There can be various ways for the locking member 500 to cooperate with the connecting shaft 100, as long as the second connecting member 300 and the elastic member 400 are respectively pressed axially in the opposite direction by the connecting shaft 100. The number of the locking members 500 can be one or more. For example, the locking members 500 can be two, respectively connected to the axial two ends of the connecting shaft 100, and then press the second connecting member 300 and the elastic member 400 located between the two locking members 500. Or, the connecting shaft 100 can include a nut and a screw rod, the locking member 500 is a nut, the locking member 500 is screwed onto the screw rod, the locking member 500 and the nut are respectively located at the two ends of the screw rod axially, and the locking member 500 cooperates with the nut to press the second connecting member 300 and the elastic member 400. The locking member 500 and the connecting shaft 100 can also be in an interference fit.

[0052] A rotating shaft device, a printer housing, a display screen assembly and a 3D printer proposed by an embodiment of the present utility model mainly realize the angle adjustment of a to-be-rotated component in the 3D printer by arranging the rotating shaft device to connect the to-be-rotated component. For example, when the to-be-rotated component is a display screen, during use, the angle of the display screen can be adjusted as needed, so that the display screen can be stably fixed at any required angle, with convenient adjustment and flexible use. At the same time, the rotating shaft device adjusts the pressing force on the second connecting member through the elastic member, so that the pressing force received by the second connecting member is appropriate, and it will not have too large a frictional force due to too large a pressing force, thus avoiding the problem of difficult rotation of the rotating member connected to the second connecting member. At the same time, it will not have insufficient frictional force due to too small a pressing force caused by wear, thus avoiding the looseness of the second connecting member, ensuring that the rotating member connected to the second connecting member can be stably fixed at a specified position, and the rotating shaft structure of the present application is simple, easy to implement and has a low cost.

[0053] The relative positions of the elastic member 400 and the second connecting member 300 can be various. For example, in one implementation, the elastic member 400 is located on the side of the second connecting member 300 opposite to the first connecting member 200, ensuring the accurate relative position of the first connecting member 200 and the second connecting member 300 in the axial direction of the connecting shaft 100. For example, it ensures the accurate vertical position of the opening and closing door, and will not cause height changes due to the deformation of the elastic member 400, avoiding the inability to close the opening and closing door. In some implementations, when the connecting shaft 100 includes a nut and a screw rod as described above, in the direction from the nut to the screw rod, they are the first connecting member 200, the second connecting member 300, the elastic member 400, and the locking member 500 in sequence. Or, it can also be the elastic member 400, the first connecting member 200, the second connecting member 300, and the locking member 500 in sequence in the direction from the nut to the screw rod.

[0054] In another implementation, the gasket assembly includes at least two elastic members 400, and at least one elastic member 400 is respectively arranged on the opposite sides of the second connecting member 300, which can increase the pressure adjustment performance of the elastic member 400. And when the second connecting member 300 moves, the elasticity in two directions along the axis of the connecting shaft 100 can relieve the rigid collision received by the rotating member. For example, in the implementation where the second connecting member 300 is connected to the display screen, when the display screen is impacted by an external force, the external force can be released through the elastic member 400 in any direction along the axis of the connecting shaft 100.

[0055] In one implementation, the gasket assembly includes at least two elastic members 400. The elastic member 400 includes opposite concave and convex surfaces. At least two elastic members 400 are arranged adjacent to each other, and the convex surfaces of two adjacent elastic members 400 face each other, or the concave surfaces of two adjacent elastic members 400 face each other.

[0056] The elastic member 400 is a butterfly gasket, and it can be a rubber gasket. Compared with only relying on the deformation of the material itself to provide elastic force, the butterfly gasket can increase the deformation amount and the elastic force adjustment range through the shape setting. The convex surfaces or concave surfaces of two adjacent elastic members 400 face each other, thus reserving space for deformation. The elastic members 400 are arranged adjacent to each other, which can reduce the frictional damage to the elastic member 400 by the structure in the rotating shaft device that is in direct contact with the elastic member 400.

[0057] In one implementation, the gasket assembly further includes a first fixing gasket 600 and a second fixing gasket 700. The first fixing gasket 600 and the second fixing gasket 700 are sleeved on the connecting shaft 100, and the elastic member 400 is located between the first fixing gasket 600 and the second fixing gasket 700.

[0058] The first fixing gasket 600 and the second fixing gasket 700 sandwich the elastic member 400 therebetween, serving to protect the elastic member 400. Taking the example where the elastic member 400 is located between the first connecting member 200 and the locking member 500, in one embodiment, the first fixing gasket 600 and the second fixing gasket 700 are respectively and limitedly connected to the connecting shaft 100 to restrict the rotation of the first fixing gasket 600 and the second fixing gasket 700 in the circumferential direction of the connecting shaft 100, that is, the relative positions of the first fixing gasket 600 and the second fixing gasket 700 in the circumferential direction of the connecting shaft 100 are fixed. On the one hand, it avoids the direct contact between the elastic member 400 and the first connecting member 200 and being worn by the first connecting member 200, and avoids the direct contact between the elastic member 400 and the locking member 500 and being worn by the locking member 500; on the other hand, it avoids the elastic member 400 rotating following the first connecting member 200, avoids the distortion of the shape of the elastic member 400 under force and affecting the elastic force adjustment range, and avoids the wear caused by the relative rotation of the elastic member 400 with respect to the connecting shaft 100. The outer diameter of the first fixing gasket 600 and the outer diameter of the second fixing gasket 700 may be the same as the outer diameter of the elastic member 400, or the outer diameter of the first fixing gasket 600 and the outer diameter of the second fixing gasket 700 may be slightly larger than the outer diameter of the elastic member 400.

[0059] In one embodiment, in the embodiment where the relative positions of the first connecting member 200 and the connecting shaft 100 are fixed in the circumferential direction of the connecting shaft 100, it may be that the first connecting member 200 and the connecting shaft 100 are integrally formed, and it can be regarded as the connecting shaft 100 being directly connected to the support member. Or, a through hole is provided on the first connecting member 200, and at least one first limiting surface is provided on the side wall of the through hole. At least one second limiting surface is provided on the connecting shaft 100. The connecting shaft 100 is inserted through the through hole, and the first connecting member 200 acts through the first limiting surface and the second limiting surface to be limitedly connected to the connecting shaft 100 to restrict the rotation of the first connecting member 200 in the circumferential direction of the connecting shaft 100. For example, the through hole may be a square hole or a waist-shaped hole, and a partial area of the connecting shaft 100 is a square column or includes two opposite limiting planes, and then the first connecting member 200 cannot rotate in the circumferential direction of the connecting shaft 100 through insertion. The first connecting member 200 is detachable, enabling the replacement of the first connecting member 200 according to needs and the wear degree of the first connecting member 200.

[0060] In one embodiment, as Figure 7-8 shown, both the first connecting member 200 and the second connecting member 300 are perpendicular to the axial direction of the connecting shaft 100. The first connecting member 200 and the second connecting member 300 may both be approximate plate-like structures extending only in a single direction. The connecting surface of the rotating member for connecting to the first connecting member 200 may be perpendicular to the connecting shaft 100, and the connecting surface of the support member for connecting to the second connecting member 300 may be perpendicular to the connecting shaft 100, which can be achieved through the structural settings of the rotating member and the support member.

[0061] In addition, the shapes of the first connecting member 200 and the second connecting member 300 can be changed to adapt to rotating members and supporting members with a variety of different structures or positional relationships. In another embodiment, the first connecting member 200 at least includes a first region 210 and a second region 220. The first region 210 is connected to the connecting shaft 100, the first region 210 is perpendicular to the axial direction of the connecting shaft 100, the second region 220 is directly connected to the first region 210, or indirectly connected through an intermediate transfer plate, and the second region 220 is parallel to the axial direction of the connecting shaft 100. The second connecting member 300 includes a third region 310 and a fourth region 320. The third region 310 is connected to the connecting shaft 100, the third region 310 is perpendicular to the axial direction of the connecting shaft 100, the fourth region 320 is directly connected to the third region 310, or indirectly connected through an intermediate transfer plate, and the fourth region 320 is parallel to the axial direction of the connecting shaft 100.

[0062] By making the first region 210 perpendicular to the axial direction of the connecting shaft 100, it is realized that the first connecting member 200 can rotate around the connecting shaft 100. The first region 210 and the third region 310 are perpendicular to the axial direction of the connecting shaft 100, making the structure arrangement on the connecting shaft regular. The second region 220 and the fourth region 320 are parallel to the connecting shaft 100, realizing adaptation to the original structures of the rotating member and the supporting member. For example, in an embodiment where the rotating member and the supporting member are the opening and closing door of an outer cover and a frame respectively, the opening and closing door is a plate-like structure, the opening and closing door is parallel to the outer surface of the frame relative to the opening and closing door, the rotating shaft device is arranged between the opening and closing door and the frame, the second region 220 is connected to the opening and closing door, and the fourth region 320 is connected to the outer surface of the frame, thus eliminating the need to change the original shapes of the opening and closing door and the frame.

[0063] In one embodiment, the gasket assembly further includes a third fixing gasket 800. The third fixing gasket 800 is sleeved on the connecting shaft 100, and the third fixing gasket 800 is located between the first connecting member 200 and the second connecting member 300.

[0064] The third fixing gasket 800 is used to prevent the direct contact between the first connecting member 200 and the second connecting member 300 from causing wear on the contact surface of the first connecting member 200. The third fixing gasket 800 can be made of a more wear-resistant material or can be replaced as needed. The third fixing gasket 800 can rotate relative to the connecting shaft 100, or can be fixed in a relative position with the connecting shaft 100 in the circumferential direction of the connecting shaft 100. The implementation methods for the third fixing gasket 800 and the above-mentioned first fixing gasket 600 and second fixing gasket 700 to be fixed in a relative position with the connecting shaft 100 in the circumferential direction of the connecting shaft 100 can all be achieved by means of passing through an eccentric hole. An eccentric hole is a non-circular hole. For example, perforations are provided on the first fixing gasket 600, the second fixing gasket 700, and the third fixing gasket 800. The perforations can be square holes or waist-shaped holes. The shape of the cross-section of the connecting shaft 100 corresponds to the shape of the perforations. For example, a partial area of the connecting shaft 100 is a square column or includes two opposite limiting planes, and then the relative positions of the first fixing gasket 600, the second fixing gasket 700, and the third fixing gasket 800 in the circumferential direction of the connecting shaft 100 can be fixed by passing through. Anti-slip depressions or protrusions can be provided on the first fixing gasket 600, the second fixing gasket 700, and the third fixing gasket 800, thereby increasing the frictional force to increase the damping force of the damped rotation.

[0065] In one implementation, as Figure 7-8 shown, the rotating shaft device further includes an extension column 900. The extension column 900 is sleeved on the connecting shaft 100, and the extension column 900 is located between the first connecting member 200 and the second connecting member 300.

[0066] The extension column 900 can rotate relative to the connecting shaft 100, or can be fixed in a relative position with the connecting shaft 100 in the circumferential direction of the connecting shaft 100. The extension column 900 is used to increase the distance between the first connecting member 200 and the second connecting member 300, so that the distance between the first connecting member 200 and the second connecting member 300 can be changed as needed to adapt to different usage scenarios, making the rotating shaft device have better versatility.

[0067] On the other hand, the present utility model further provides a printer outer cover, including the rotating shaft device as described in any one of the above, as well as a frame and an opening and closing door. The first connecting member 200 is connected to the frame, the second connecting member 300 is connected to the opening and closing door, and the opening and closing door rotates relative to the frame through the rotating shaft device.

[0068] The rotating shaft device of the printer outer cover can select the implementation method in which the second area 220 and the fourth area 320 of the aforementioned rotating shaft device are parallel to the connecting shaft 100. The printer outer cover includes the rotating shaft device as described in any one of the above, and includes the advantages of the rotating shaft device as described in any one of the above, which will not be elaborated here.

[0069] In one embodiment, either a positioning groove or a positioning head 230 is provided on the frame, and the other of the positioning groove or the positioning head 230 is provided on the first connecting member 200. The positioning head 230 is inserted into the positioning groove, thereby making the installation of the first connecting member 200 and the frame more convenient and the relative position more accurate, and reducing the risk of loosening of the connecting bolts between the first connecting member 200 and the frame. It can be understood that the frame can be the frame of a 3D printer or connected to the frame of a 3D printer.

[0070] On the other hand, as Figure 9-22 shown, the present invention also provides a display screen assembly, including the rotating shaft device 10 of any one of the above, as well as a display screen 20 and a fixed seat 30. The first connecting member 200 is connected to the fixed seat 30, the second connecting member 300 is connected to the display screen 20, and the display screen 20 rotates relative to the fixed seat 30 through the rotating shaft device 10.

[0071] The fixed seat 30 can be connected to the base of the 3D printer, or can be directly fixed on the operating table or the frame of the 3D printer. The display screen 20 is electrically connected to the main controller of the 3D printer through an electrical connection line. A through hole can be opened on the fixed seat 30, and the electrical connection line passes through the through hole and is introduced into the interior of the base to connect to the main controller. The display screen assembly includes the rotating shaft device 10 of any one of the above, and the advantages of including the rotating shaft device 10 of any one of the above will not be elaborated here.

[0072] In one embodiment, the fixed seat 30 includes a bottom plate 31 and a first connection disk 32, and the first connection disk 32 is connected to the bottom plate 31. The display screen 20 includes a screen 21, a frame 22, and a second connection disk 23. The frame 22 includes a support area 221 and a covering area 222. The screen 21 is connected to the support area 221. The first end of the covering area 222 is connected to the support area 221, and the other end of the covering area 222 bends and extends towards the back of the screen 21 to form a lead space. The second connection disk 23 is located in the lead space and is connected to the covering area 222. The first connection disk 32 and the second connection disk 23 are coaxially arranged. The first connecting member 200 is connected to the first connection disk 32, and the second connecting member 300 is connected to the second connection disk 23.

[0073] The first connection disk 32 is approximately circular disk-shaped, and the axis of the first connection disk 32 is parallel to the bottom plate 31. The support area 221 is an approximately planar frame, and the covering area 222 is an arc-shaped plate structure, and the covering area 222 forms an approximately cylindrical lead space. The display screen assembly further includes a flexible circuit board 26 and a back plate 27. The flexible circuit board 26 is located on the side of the support area 221 opposite to the screen 21 for fixing the electrical connection line, and the back plate 27 covers the side of the flexible circuit board 26 opposite to the screen 21 for shielding internal components such as the flexible circuit board 26. As Figure 19-20As shown, a notch 271 is provided on the backplane 27. After the backplane 27 is installed, after the electrical connection line passes through the lead space, it is led out between the notch 271 and the covering area 222. During the rotation of the display screen 20, the covering area 222 is used to block the electrical connection line to prevent the electrical connection line from leaking out and affecting the appearance. The range of the rotation angle of the display screen 20 can be set as required, such as Figure 9-11 As shown, the display screen 20 can rotate within a range of 90 degrees in the horizontal and vertical directions, and due to the damping characteristics of the rotating shaft device, the display screen 20 can stay at any intermediate angle. Such as Figure 12-14 is a schematic diagram of the display screen 20 in the horizontal position, Figure 15-17 is a schematic diagram of the display screen 20 in the vertical position. It can be seen that no matter what position the display screen 20 is in, the electrical connection line is blocked by the covering area 222 and will not be exposed on the front of the display screen 20.

[0074] In one embodiment, the number of the first connection disks 32 and the second connection disks 23 is two each. The two first connection disks 32 are arranged at intervals in the axial direction of the first connection disk 32. The two second connection disks 23 are arranged close to the edge of the covering area 222. The two first connection disks 32 can be connected to the second connection disks 23 from the outside of the two second connection disks 23. The number of the first connection disks 32 and the second connection disks 23 is two each, which ensures that the position of the display screen 20 is more stable and avoids the easy loosening of the connection between a single first connection disk 32 and the second connection disk 23 and the easy shaking of the display screen 20.

[0075] In one embodiment, the display screen 20 further includes a retaining ring 24. The retaining ring 24 is connected to the supporting area 221, and there is an interval between the retaining ring 24 and the covering area 222. The first connection disk 32 passes through the space between the retaining ring 24 and the covering area 222 to be coaxial with the second connection disk 23. The retaining ring 24 includes a relief opening 241. A first bolt through-hole is provided on the first connection disk 32, and a second bolt through-hole is provided on the second connection disk 23. The projections of the first bolt through-hole and the second bolt through-hole in the axial direction of the second connection disk 23 are located within the relief opening 241.

[0076] A third bolt through-hole corresponding to the first bolt through-hole is provided on the first connecting member 200, and a fourth bolt through-hole corresponding to the second bolt through-hole is provided on the second connecting member 300. During installation, such as Figure 21-22As shown in the figure, first, align the fourth bolt through-hole of the second connecting member 300 with the second bolt through-hole on the second connecting plate 23. Then, through the relief opening 241 of the retaining ring 24, insert a bolt from the outer side of the retaining ring 24 opposite to the rotating shaft device into the fourth bolt through-hole and the second bolt through-hole, and then tighten with a nut to complete the locking of the second connecting member 300 and the second connecting plate 23. Then, insert the first connecting plate 32 between the retaining ring 24 and the covering area 222, and align the third bolt through-hole of the first connecting member 200 with the first bolt through-hole of the first connecting plate 32. Then, through the relief opening 241 of the retaining ring 24, insert a bolt from the outer side of the retaining ring 24 opposite to the rotating shaft device into the third bolt through-hole and the first bolt through-hole, and then tighten with a nut to complete the installation of the rotating shaft device 10. The relief opening 241 is used to provide space for the bolt, facilitating installation. The relief opening 241 can be in various forms. For example, the relief opening 241 can be a whole circular opening, coaxially arranged with the second connecting plate 23. Or, the relief opening 241 can be multiple openings set according to the positions of the bolt through-holes, such as four openings respectively corresponding to two first bolt through-holes and two second bolt through-holes.

[0077] In one implementation, the display screen 20 further includes a shielding disc 25. The shielding disc 25 is connected to the retaining ring 24 and covers the relief opening 241, thereby preventing the bolt from being exposed and affecting the appearance. The shielding disc 25 can be connected to the retaining ring 24 in a plug-in manner. In the implementation where the number of the aforementioned first connecting plates 32 and second connecting plates 23 is both two, the number of the shielding discs 25 and the retaining rings 24 is also both two.

[0078] On the other hand, an embodiment of the present invention further provides a 3D printer. The 3D printer includes a printer outer cover as described in any one of the above, and a printer main body. The printer main body is used to realize three-dimensional forming. The printer main body is located inside the printer outer cover. The printer outer cover plays roles such as shading, preventing the printing process from being contaminated, and / or heat preservation. The 3D printer includes a printer outer cover as described in any one of the above. The advantages of including a printer outer cover as described in any one of the above will not be elaborated here.

[0079] On the other hand, an embodiment of the present invention further provides a 3D printer. The 3D printer includes a display screen assembly as described in any one of the above, as well as a base, a printing platform, and a gantry unit. The printing platform and the gantry unit are both connected to the base, and the gantry unit is erected on the printing platform. The display screen assembly can be connected to the base or the gantry unit. The 3D printer includes a printer outer cover as described in any one of the above. The advantages of including a printer outer cover as described in any one of the above will not be elaborated here.

[0080] Please refer to Figure 23, wherein, the 3D printer may further include a material breakage and blockage detection device for detecting whether the consumable material of the 3D printer is broken or blocked. The material breakage and blockage detection device includes a housing 11, a passive wheel 12, a synchronous detection wheel 13, a rotating rod 14, an elastic member 15, a first sensor 16 and a second sensor 17; a consumable material channel 111 is provided on the housing 11, and a relief hole 112 is formed on the side wall of one side of the consumable material channel 111; the passive wheel 12 is rotatably connected to the rotating rod 14, the passive wheel 12 is coaxially connected to the synchronous detection wheel 13 and rotates synchronously, and a detection protrusion is provided on the edge of the synchronous detection wheel 13; the passive wheel 12 is located in the consumable material channel 111 through the relief hole 112; the rotating rod 14 is movably connected to the housing 11, such as a rotational connection or a sliding connection; the elastic member 15 is located on the side of the rotating rod 14 away from the relief hole 112 to apply a force to the rotating rod 14, the passive wheel 12 and the synchronous detection wheel 13 to approach the consumable material channel 111; the first sensor 16 and the second sensor 17 are respectively connected to the housing 11, the first sensor 16 is used for detecting the rotation state of the synchronous detection wheel 13, and the second sensor 17 is used for detecting the position of the rotating rod 14; the passive wheel 12, the synchronous detection wheel 13 and the rotating rod 14 include a material shortage position and a detection position. If there is no consumable material in the consumable material channel 111 corresponding to the relief hole 112, the passive wheel 12, the synchronous detection wheel 13 and the rotating rod 14 are located at the material shortage position under the action of the elastic member 15, the first sensor 16 cannot detect the rotation of the synchronous detection wheel 13, and the second sensor 17 cannot detect the rotating rod 14; if there is no consumable material in the consumable material channel 111 corresponding to the relief hole 112 and becomes having consumable material, the passive wheel 12 is lifted by the consumable material to be away from the consumable material channel 111, and the rotating rod 14 and the synchronous detection wheel 13 move synchronously with the passive wheel 12, so that the passive wheel 12, the synchronous detection wheel 13 and the rotating rod 14 move to the detection position, so that the first sensor 16 can be used to detect the synchronous detection wheel 13 and the second sensor 17 can be used to detect the rotating rod 14; and the movement of the consumable material can drive the passive wheel 12 and the synchronous detection wheel 13 to rotate, and a detection protrusion is provided on the edge of the synchronous detection wheel 13, so that the first sensor 16 can detect the change in the rotation of the synchronous detection wheel 13, that is, it can detect whether the consumable material is blocked; in addition, the rotating rod 14 changes from the material shortage position to the detection position, resulting in the second sensor 17 changing from not detecting the rotating rod 14 to detecting the rotating rod 14, that is, the detection signal of the second sensor 17 changes, so that the presence or absence of the consumable material can be detected.

[0081] Wherein, both the first sensor 16 and the second sensor 17 can be photoelectric sensors. When the second sensor 17 detects the rotating rod 14, it can directly or indirectly detect the rotating rod 14. For example, a protrusion is provided on the rotating rod 14, and the second sensor 17 detects the protrusion to indirectly detect the rotating rod 14.

[0082] Wherein, the elastic member 15 can be a spring.

[0083] Among them, the housing 11 can be integrally formed or can include a plurality of interconnected components. In this application, the housing 11 includes a plurality of connected components. The specific structure of the housing 11 can be set as needed, and this application will not further elaborate.

[0084] The present utility model also provides the following embodiments:

[0085] Reference numeral 1, a rotating shaft device, applied to a 3D printer, the rotating shaft device includes:

[0086] A connecting shaft 100;

[0087] A first connecting member 200, the first connecting member 200 is connected to the connecting shaft 100;

[0088] At least one second connecting member 300, the second connecting member 300 is rotatably sleeved on the connecting shaft 100;

[0089] A gasket assembly, the gasket assembly includes an elastic member 400, and the elastic member 400 is connected to the connecting shaft 100;

[0090] A locking member 500, the locking member 500 is connected to the connecting shaft 100, and the locking member 500 cooperates with the connecting shaft 100 to axially press the first connecting member 200, the second connecting member 300, and the elastic member 400 on the connecting shaft 100.

[0091] Reference numeral 2, the rotating shaft device according to reference numeral 1, wherein,

[0092] The elastic member 400 is located on a side of the second connecting member 300 opposite to the first connecting member 200;

[0093] Alternatively, the gasket assembly includes at least two elastic members 400, and at least one elastic member 400 is respectively arranged on opposite sides of the second connecting member 300.

[0094] Reference numeral 3, the rotating shaft device according to reference numeral 1, wherein,

[0095] The gasket assembly includes at least two elastic members 400, the elastic member 400 includes opposite concave and convex surfaces, at least two elastic members 400 are arranged adjacent to each other, and the convex surfaces of adjacent two elastic members 400 face each other, or the concave surfaces of adjacent two elastic members 400 face each other.

[0096] Reference numeral 4, the rotating shaft device according to reference numeral 1, wherein,

[0097] The gasket assembly further includes a first fixing gasket 600 and a second fixing gasket 700, the first fixing gasket 600 and the second fixing gasket 700 are sleeved on the connecting shaft 100, and the elastic member 400 is located between the first fixing gasket 600 and the second fixing gasket 700.

[0098] Reference numeral 5. The rotating shaft device according to reference numeral 1, wherein,

[0099] The first fixing gasket 600 and the second fixing gasket 700 are respectively and limit-connected to the connecting shaft 100 to limit the rotation of the first fixing gasket 600 and the second fixing gasket 700 in the circumferential direction of the connecting shaft 100.

[0100] Reference numeral 6. The rotating shaft device according to reference numeral 1, wherein,

[0101] The first connecting member 200 is sleeved on the connecting shaft 100;

[0102] The first connecting member 200 and the connecting shaft 100 are integrally formed;

[0103] Alternatively, a perforation is provided on the first connecting member 200, at least one first limiting surface is provided on the side wall of the perforation, at least one second limiting surface is provided on the connecting shaft 100, the connecting shaft 100 is inserted through the perforation, and the first connecting member 200 acts through the first limiting surface and the second limiting surface to be limit-connected to the connecting shaft 100 to limit the rotation of the first connecting member 200 in the circumferential direction of the connecting shaft 100.

[0104] Reference numeral 7. The rotating shaft device according to reference numeral 1, wherein,

[0105] Both the first connecting member 200 and the second connecting member 300 are perpendicular to the axial direction of the connecting shaft 100;

[0106] Alternatively, the first connecting member 200 at least includes a first region 210 and a second region 220. The first region 210 is connected to the connecting shaft 100, the first region 210 is perpendicular to the axial direction of the connecting shaft 100, the second region 220 is directly or indirectly connected to the first region 210, and the second region 220 is parallel to the axial direction of the connecting shaft 100;

[0107] The second connecting member 300 includes a third region 310 and a fourth region 320. The third region 310 is connected to the connecting shaft 100, the third region 310 is perpendicular to the axial direction of the connecting shaft 100, the fourth region 320 is directly or indirectly connected to the third region 310, and the fourth region 320 is parallel to the axial direction of the connecting shaft 100.

[0108] Reference numeral 8. The rotating shaft device according to reference numeral 1, wherein,

[0109] The gasket assembly further includes a third fixing gasket 800. The third fixing gasket 800 is sleeved on the connecting shaft 100, and the third fixing gasket 800 is located between the first connecting member 200 and the second connecting member 300.

[0110] Reference numeral 9. The rotating shaft device according to reference numeral 1, wherein the rotating shaft device further includes:

[0111] The extension column 900 is sleeved on the connecting shaft 100, and the extension column 900 is located between the first connecting member 200 and the second connecting member 300.

[0112] Reference numeral 10. A rotating shaft device according to reference numeral 1, wherein

[0113] The connecting shaft 100 includes a nut and a screw rod. The locking member 500 is screwed onto the screw rod, and the locking member 500 cooperates with the nut to squeeze the first connecting member 200, the second connecting member 300, and the elastic member 400.

[0114] Reference numeral 11. A printer housing, which includes a rotating shaft device according to any one of the above reference numerals 1-10, and

[0115] A frame and an opening / closing door. The first connecting member 200 is connected to the frame, the second connecting member 300 is connected to the opening / closing door, and the opening / closing door rotates relative to the frame through the rotating shaft device.

[0116] Reference numeral 12. A printer housing according to reference numeral 11, wherein

[0117] One of a positioning groove or a positioning head 230 is provided on the frame, and the other of the positioning groove or the positioning head 230 is provided on the first connecting member 200, and the positioning head 230 is inserted into the positioning groove.

[0118] Reference numeral 13. A display screen assembly, which includes a rotating shaft device 10 according to any one of the above reference numerals 1-10, and

[0119] A display screen 20 and a fixing base 30. The first connecting member 200 is connected to the fixing base 30, the second connecting member 300 is connected to the display screen 20, and the display screen 20 rotates relative to the fixing base 30 through the rotating shaft device 10.

[0120] Reference numeral 14. A display screen assembly according to reference numeral 13, wherein

[0121] The fixing base 30 includes a bottom plate 31 and a first connection disk 32, and the first connection disk 32 is connected to the bottom plate 31;

[0122] The display screen 20 includes a screen 21, a frame body 22, and a second connection disk 23. The frame body 22 includes a support area 221 and a covering area 222. The screen 21 is connected to the support area 221. The first end of the covering area 222 is connected to the support area 221, and the other end of the covering area 222 bends and extends towards the back of the screen 21 to form a lead space. The second connection disk 23 is located in the lead space and is connected to the covering area 222;

[0123] The first connection disk 32 and the second connection disk 23 are coaxially arranged. The first connecting member 200 is connected to the first connection disk 32, and the second connecting member 300 is connected to the second connection disk 23.

[0124] Reference numeral 15. The display screen assembly according to reference numeral 14, wherein,

[0125] The number of the first connection pads 32 and the second connection pads 23 is two each, and the two first connection pads 32 are arranged at intervals in the axial direction of the first connection pads 32.

[0126] Reference numeral 16. The display screen assembly according to reference numeral 14, wherein,

[0127] The display screen 20 further includes a retaining ring 24, the retaining ring 24 is connected to the supporting area 221, and there is an interval between the retaining ring 24 and the covering area 222;

[0128] The first connection pad 32 passes through between the retaining ring 24 and the covering area 222 to be coaxial with the second connection pad 23;

[0129] The retaining ring 24 includes a relief opening 241, a first bolt through hole is provided on the first connection pad 32, a second bolt through hole is provided on the second connection pad 23, and the projections of the first bolt through hole and the second bolt through hole in the axial direction of the second connection pad 23 are located within the relief opening 241.

[0130] Reference numeral 17. The display screen assembly according to reference numeral 16, wherein,

[0131] The display screen 20 further includes a shielding disk 25, the shielding disk 25 is connected to the retaining ring 24 and covers the relief opening 241.

[0132] Reference numeral 18. A 3D printer, wherein the 3D printer includes a rotating shaft device as described in the above reference numerals 1-10, or the 3D printer includes a printer outer cover as described in any one of the above reference numerals 11-12, or the 3D printer includes a display screen assembly as described in any one of the above reference numerals 13-17.

[0133] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A rotating shaft device, characterized in that: Applied to a three-dimensional printer, the rotating shaft device comprises: Connecting shaft; a first connecting member connected to the connecting shaft; At least one second connecting member, the second connecting member is rotatably sleeved on the connecting shaft; A gasket assembly, the gasket assembly comprising an elastic member, the elastic member being connected to the connecting shaft; A locking member is connected to the connecting shaft, and the locking member cooperates with the connecting shaft to squeeze the first connecting member, the second connecting member and the elastic member in the axial direction of the connecting shaft.

2. The rotating shaft device according to claim 1, characterized in that: The elastic member is located on a side of the second connecting member that is opposite to the first connecting member; Alternatively, the gasket assembly includes at least two elastic members, and at least one elastic member is respectively disposed on two opposite sides of the second connecting member.

3. The rotating shaft device according to claim 1, characterized in that: The gasket assembly includes at least two elastic members, each of which includes a concave surface and a convex surface facing each other. At least two of the elastic members are arranged adjacent to each other, and the convex surfaces of two adjacent elastic members are opposite to each other, or the concave surfaces of two adjacent elastic members are opposite to each other.

4. The rotating shaft device according to claim 1, characterized in that: The gasket assembly further includes a first fixed gasket and a second fixed gasket, wherein the first fixed gasket and the second fixed gasket are sleeved on the connecting shaft, and the elastic member is located between the first fixed gasket and the second fixed gasket.

5. The rotating shaft device according to claim 4, characterized in that: The first fixing gasket and the second fixing gasket are respectively connected to the connecting shaft in a limiting manner to limit the rotation of the first fixing gasket and the second fixing gasket in the circumferential direction of the connecting shaft.

6. The rotating shaft device according to claim 1, characterized in that: The first connecting member is sleeved on the connecting shaft; The first connecting member and the connecting shaft are integrally formed; Alternatively, a through hole is provided on the first connecting member, at least one first limiting surface is provided on the side wall of the through hole, at least one second limiting surface is provided on the connecting shaft, the connecting shaft is connected to the through hole, and the first connecting member is connected to the connecting shaft in a limiting manner through the first limiting surface and the second limiting surface, thereby limiting the circumferential rotation of the first connecting member on the connecting shaft.

7. The rotating shaft device according to claim 1, characterized in that: The first connecting member and the second connecting member are both perpendicular to the axial direction of the connecting shaft; Alternatively, the first connecting member includes at least a first region and a second region, the first region is connected to the connecting shaft, the first region is perpendicular to the axial direction of the connecting shaft, the second region is directly or indirectly connected to the first region, and the second region is parallel to the axial direction of the connecting shaft; The second connecting member includes a third area and a fourth area, the third area is connected to the connecting shaft, the third area is perpendicular to the axial direction of the connecting shaft, the fourth area is directly or indirectly connected to the third area, and the fourth area is parallel to the axial direction of the connecting shaft.

8. The rotating shaft device according to claim 1, characterized in that: The gasket assembly also includes a third fixed gasket, which is sleeved on the connecting shaft and located between the first connecting member and the second connecting member.

9. The rotating shaft device according to claim 1, characterized in that: The rotating shaft device also includes: An extension column, wherein the extension column is sleeved on the connecting shaft and is located between the first connecting member and the second connecting member.

10. The rotating shaft device according to claim 1, characterized in that: The connecting shaft comprises a nut and a screw rod, the locking member is screwed to the screw rod, and the locking member cooperates with the nut to squeeze the first connecting member, the second connecting member and the elastic member.

11. A printer cover, characterized in that: comprising a rotating shaft device as claimed in any one of claims 1 to 10, and A frame and an opening and closing door, wherein the first connecting member is connected to the frame, the second connecting member is connected to the opening and closing door, and the opening and closing door rotates relative to the frame via the rotating shaft device.

12. The printer cover according to claim 11, characterized in that: The frame is provided with one of a positioning slot or a positioning head, the first connecting member is provided with the other of a positioning slot or a positioning head, and the positioning head is plugged into the positioning slot.

13. A display screen assembly, characterized in that: A rotating shaft device comprising any one of claims 1 to 10, and A display screen and a fixing base, wherein the first connecting member is connected to the fixing base, the second connecting member is connected to the display screen, and the display screen rotates relative to the fixing base via the rotating shaft device.

14. The display screen assembly according to claim 13, characterized in that: The fixing seat comprises a bottom plate and a first connection plate, wherein the first connection plate is connected to the bottom plate; The display screen includes a screen, a frame and a second connection plate, the frame includes a support area and a cover area, the screen is connected to the support area, a first end of the cover area is connected to the support area, the other end of the cover area is bent and extended toward the back of the screen to form a lead space, and the second connection plate is located in the lead space and connected to the cover area; The first connection disk is coaxially arranged with the second connection disk, the first connection member is connected with the first connection disk, and the second connection member is connected with the second connection disk.

15. The display screen assembly according to claim 14, characterized in that: The number of the first connection disks and the number of the second connection disks are both two, and the two first connection disks are arranged at intervals in the axial direction of the first connection disk.

16. The display screen assembly according to claim 14, characterized in that: The display screen further comprises a retaining ring, the retaining ring is connected to the supporting area, and the retaining ring is spaced apart from the covering area; The first connection disk passes through between the retaining ring and the covering area to be coaxial with the second connection disk; The retaining ring includes a clearance opening, a first bolt through hole is provided on the first connecting plate, a second bolt through hole is provided on the second connecting plate, and the axial projections of the first bolt through hole and the second bolt through hole on the second connecting plate are located in the clearance opening.

17. The display screen assembly according to claim 16, characterized in that: The display screen also includes a blocking plate, which is connected to the blocking ring and covers the yield opening.

18. A three-dimensional printer, characterized in that: The three-dimensional printer comprises a rotating shaft device as described in any one of claims 1 to 10, or the three-dimensional printer comprises a printer cover as described in any one of claims 11 to 12, or the three-dimensional printer comprises a display screen assembly as described in any one of claims 13 to 17.

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