Driving force transmission components, rotating parts, toner cartridges and electronic imaging equipment

Abstract

The present invention provides a driving force transmission component, a rotating member, a toner cartridge and an electronic imaging device. The driving force transmission component includes a driving force receiving member and a driving gear. The driving force receiving member includes a rod body and a driving force receiving portion located at one end of the rod body. The rod body is inserted into the driving gear and drives the driving gear to rotate. A mounting frame is provided in the driving gear, and the body of the mounting frame is provided at one end of the driving gear close to the driving force receiving portion. An abutment member is provided on the rod body, and a reset member is provided between the abutment member and the body of the mounting frame. The driving force receiving portion is meshed with a driving shaft, and at least one of the driving force receiving portion and the driving shaft contains a magnetic material. The rotating member includes a barrel and a driving force transmission component. The toner cartridge includes the above-mentioned rotating member. The electronic imaging device is equipped with the above-mentioned toner cartridge. The present invention can ensure smooth installation of the toner cartridge.

Description

Technical Field

[0001] The present invention relates to the technical field of printing consumables used in laser printers, and in particular to a driving force transmission component, a rotating part and a toner cartridge having the driving force transmission component, and also to an electronic imaging device having the toner cartridge. Background Art

[0002] In electronic imaging devices, such as electrostatic copiers or digital copiers and integrated printers, a toner cartridge containing toner is provided. Usually, the toner cartridge includes a toner containing chamber for containing toner, and a photosensitive drum, a developing roller and other rotating parts are provided in the toner cartridge. Usually, the photosensitive drum, the developing roller and other rotating parts are rotatably supported between the two end walls of the toner cartridge body, and the rotating parts include a cylinder and a driving force transmission assembly installed at the axial end of the cylinder.

[0003] The electronic imaging device is provided with a driving force output component, see Figure 1 and Figure 2 The driving force output assembly includes a driving shaft 18, and a pin 19 extending outside the peripheral wall of the driving shaft 18 is provided at the end of the driving shaft 18. When the electronic imaging device is imaging, the driving shaft 18 rotates around its own axis and drives the pin 19 to rotate. The driving force transmission assembly on the rotating parts such as the photosensitive drum cooperates with the driving force output assembly. Under the drive of the driving force output assembly, the driving force transmission assembly follows the rotation, thereby driving the rotating parts such as the photosensitive drum to rotate.

[0004] The Chinese invention patent with the announcement number CN105807585B discloses a rotational force transmission assembly applied to a photosensitive drum. The rotational force transmission assembly cooperates with the driving force output assembly of the electronic imaging device and is a driving force transmission assembly. The rotational force transmission assembly includes a drum gear, a rotational force transmission head (i.e., a driving force receiving member), an axial reset member, a tooth reset member, and a rotational force receiving tooth hinged to the rotational force transmission head through a hinge shaft, wherein the rotational force receiving tooth can reciprocate between a connection position and a disengagement position around the hinge shaft, and the tooth reset member is a torsion spring, the spring coil of the torsion spring is sleeved on the hinge shaft, one torsion arm of the torsion spring abuts against the rotational force transmission head, and the other torsion arm abuts against the rotational force receiving tooth. In addition, a limiting portion is provided on the rotational force transmission head to limit the rotation of the rotational force receiving tooth from the connection position to the disengagement position, and the elastic restoring force of the torsion spring forces the rotational force receiving tooth to abut against the limiting portion. When the electronic imaging device is working, the pin 19 of the driving force output assembly can abut against the rotational force receiving tooth, and drive the rotational force receiving tooth to rotate, thereby driving the rotational force transmission assembly to rotate. When the rotational force transmission assembly rotates, it will drive the photosensitive drum to rotate, and at the same time drive the driving gear of the developing roller to rotate.

[0005] The electronic imaging device is provided with a toner cartridge installation cavity. The toner cartridge needs to be installed in the toner cartridge installation cavity before the driving force transmission component can cooperate with the driving force output component. In order to facilitate the installation of the toner cartridge, the electronic imaging device is often provided with a guide groove, such as Figure 1 and Figure 2 As shown, a guide groove 11 is formed on the side wall of the toner cartridge installation cavity of the electronic imaging device 10, and the guide groove 11 has two side walls 12 and 13. When the toner cartridge is installed into the toner cartridge installation cavity, the driving force transmission assembly will slide to the bottom along the guide groove 11 and cooperate with the driving force output assembly arranged at the bottom of the guide groove 11.

[0006] However, the driving force receiving member of the existing driving force transmission assembly is very small in size, and a gap 14 is formed at the bottom of the guide groove 11, for example, the gap 14 is formed between the driving gear 16 and the protrusion 17 of the electronic imaging device 10. Since the driving force receiving member is relatively small in size, it is easy to slide into the gap 14, which makes it difficult for the driving force receiving member to slide to a position that matches the driving shaft 18, resulting in the inability to install the toner cartridge, affecting the installation and use of the toner cartridge.

[0007] In addition, in the existing driving force transmission assembly, a spring is provided in the driving gear, and the driving force receiving member extends outward under the action of the spring. Before the toner cartridge is installed in the electronic imaging device, the distance between the outer end surface of the driving force receiving member and the outer end surface of the driving gear is large. During the process of installing the toner cartridge in the electronic imaging device, that is, before the toner cartridge is installed in the toner cartridge installation cavity, the driving force receiving member is compressed by the guide groove 11 and will be retracted into the driving gear, and the spring is compressed at this time. When the toner cartridge is installed in the toner cartridge installation cavity, the driving force receiving member is no longer compressed by the guide groove 11, and extends outward under the action of the spring and engages with the driving shaft 18.

[0008] However, during the installation of the toner cartridge, the driving force receiving member and the guide groove 11 are squeezed against each other, which brings certain difficulties to the installation of the toner cartridge. In addition, under the action of the spring, the driving force receiving member is more likely to slide into the gap 14, which is not conducive to the installation of the toner cartridge. Summary of the invention

[0009] A first object of the present invention is to provide a driving force transmission assembly that prevents a driving force receiving member from sliding into a gap at the bottom of a guide groove of an electronic imaging device.

[0010] A second object of the present invention is to provide a rotating member having the above-mentioned driving force transmission assembly.

[0011] A third object of the present invention is to provide a carbon powder cartridge that is easy to install.

[0012] A fourth object of the present invention is to provide an electronic imaging device using the above-mentioned toner cartridge.

[0013] In order to achieve the first purpose of the present invention, the driving force transmission assembly provided by the present invention includes a driving force receiving member and a driving gear, the driving force receiving member has a rod body and a driving force receiving part located at one end of the rod body, the rod body is inserted into the driving gear and drives the driving gear to rotate; wherein, a mounting frame is arranged in the driving gear, and the main body of the mounting frame is arranged at one end of the driving gear close to the driving force receiving part; an abutment member is arranged on the rod body, and a reset member is arranged between the abutment member and the main body of the mounting frame; the driving force receiving part is meshed with the driving shaft, and at least one of the driving force receiving part and the driving shaft contains magnetic material.

[0014] It can be seen from the above scheme that the reset member abuts between the abutment member and the mounting frame body. Before the toner cartridge is installed into the toner cartridge mounting cavity, the reset member forces the abutment member to move in a direction away from the mounting frame, so that the driving force receiving member is in a retracted state. Therefore, during the installation of the toner cartridge, the driving force receiving member will not be affected by the guide groove, thereby facilitating the installation of the toner cartridge.

[0015] When the toner cartridge is installed in the toner cartridge installation cavity, the driving force receiving part is attracted to the driving shaft through the action of the magnetic material, which is beneficial to the engagement of the driving shaft and the driving force receiving part and can effectively prevent the driving force receiving part from slipping into the gap.

[0016] A preferred solution is that the abutment member includes a pin shaft penetrating through the rod body, or the abutment member and the rod body are integrally formed; in the radial direction of the driving gear, the size of the abutment member is larger than the size of the rod body.

[0017] It can be seen from this that the radial dimension of the abutment member is relatively large, which is conducive to the abutment of a return member such as a spring on the abutment member.

[0018] A further solution is that the reset member is a spring, a first end of the spring abuts against the body, and a second end of the spring abuts against the abutment member.

[0019] It can be seen that the action of the spring is conducive to driving the driving force receiving member to a direction away from the mounting bracket, ensuring that the driving force receiving part is in a retracted state.

[0020] A further solution is that a positioning groove is provided at the outer end surface, and a magnetic material is installed in the positioning groove.

[0021] It can be seen that since the driving force output component is usually made of metal material, a magnetic material, such as a permanent magnet, is arranged in the positioning groove of the driving force receiving member. The magnetic force of the magnet guides the driving force receiving member to be close to the driving shaft, which is beneficial to the cooperation between the driving force receiving member and the driving shaft.

[0022] A further solution is that the magnetic material is a magnet, the number of the magnets is more than two, and the multiple magnets are stacked in the positioning groove.

[0023] It can be seen that the stacking of multiple magnets can improve the attraction to the driving force output assembly, which is more conducive to the engagement between the driving force receiving member and the driving force output assembly.

[0024] A further solution is that the outer surface of the magnet does not exceed the outer end surface of the driving force receiving part. In this way, it is possible to avoid affecting the fit between the driving force receiving part and the driving shaft due to the magnet exceeding the outer end surface of the driving force receiving part, and ensure that the end of the driving shaft can extend into the positioning groove of the driving force receiving part.

[0025] A further solution is that a buffer is provided between the driving force receiving portion and the mounting frame, so that when the toner cartridge is taken out of the toner cartridge mounting cavity, the buffer can buffer the impact force of the driving force receiving portion on the driving gear, thereby preventing the driving gear and the mounting frame from being damaged.

[0026] A further solution is that before the driving force receiving part is engaged with the driving shaft, the distance between the outer end surface of the driving force receiving part and the outer end surface of the driving gear is a first distance; after the driving force receiving part is engaged with the driving shaft, the distance between the outer end surface of the driving force receiving part and the outer end surface of the driving gear is a second distance; the first distance is smaller than the second distance.

[0027] It can be seen that before the driving force receiving part engages with the driving shaft, the distance between the outer end surface of the driving force receiving part and the outer end surface of the driving gear is small, which can avoid the influence of the guide groove on the driving force receiving part and prevent the driving force receiving part from slipping into the gap, thereby ensuring that the driving force receiving part and the driving shaft can engage smoothly.

[0028] In order to achieve the second objective of the present invention, the rotating member provided by the present invention comprises a cylinder, and the axial end of the cylinder is provided with the above-mentioned driving force transmission assembly.

[0029] In order to achieve the third objective of the present invention, the present invention provides a toner cartridge comprising a cartridge body, a toner containing chamber is formed in the cartridge body, and the above-mentioned rotating member is disposed on one side of the toner containing chamber.

[0030] To achieve the fourth objective of the present invention, the electronic imaging device provided by the present invention includes a shell, a toner cartridge installation cavity is provided in the shell, the side wall of the toner cartridge installation cavity has a guide groove, and the above-mentioned toner cartridge is installed in the toner cartridge installation cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the partial structure inside the electronic imaging device.

[0032] Figure 2 It is a schematic diagram showing the local structure inside the electronic imaging device from another perspective.

[0033] Figure 3It is a structural diagram of the first embodiment of the toner cartridge of the present invention and the partial structure inside the electronic imaging device.

[0034] Figure 4 It is a structural diagram of a part of the first embodiment of the toner cartridge of the present invention and the drive shaft.

[0035] Figure 5 It is a structural exploded view of a part of the first embodiment of the toner cartridge of the present invention and the drive shaft.

[0036] Figure 6 It is a structural diagram of the first embodiment of the driving force transmission assembly of the present invention from a first perspective.

[0037] Figure 7 It is a structural diagram of the first embodiment of the driving force transmission assembly of the present invention from a second viewing angle.

[0038] Figure 8 It is a structural diagram of the first embodiment of the driving force transmission assembly of the present invention from a third viewing angle.

[0039] Fig. 9 It is a structural exploded view of the first embodiment of the driving force transmission assembly of the present invention.

[0040] Fig.10 It is an exploded view of the partial structure of the first embodiment of the driving force transmission assembly of the present invention.

[0041] Fig.11 It is an exploded view of the first embodiment of the driving force transmission component of the present invention and the partial structure inside the electronic imaging device.

[0042] Fig.12 It is a structural diagram of a driving force receiving member and a driving force receiving tooth of a second embodiment of a driving force transmission assembly of the present invention.

[0043] Fig.13 It is a structural exploded view of a driving force receiving member and a driving force receiving tooth of a second embodiment of a driving force transmission assembly of the present invention.

[0044] Fig.14 1 is a structural diagram of a third embodiment of a toner cartridge of the present invention.

[0045] Fig.15 It is an enlarged view of the local structure of the third embodiment of the toner cartridge of the present invention.

[0046] Fig.16 It is a structural diagram of the third embodiment of the driving force transmission assembly of the present invention.

[0047] Fig.17 It is a structural exploded view of the third embodiment of the driving force transmission assembly of the present invention.

[0048] Fig.18It is a structural exploded view of the driving gear, the mounting frame and the spring in the third embodiment of the driving force transmission assembly of the present invention.

[0049] Fig.19 It is a structural exploded view of the mounting frame and the spring in the third embodiment of the driving force transmission assembly of the present invention.

[0050] Fig. 20 It is a structural diagram of the third embodiment of the driving force transmission assembly of the present invention after being engaged with the driving shaft.

[0051] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0052] The electronic imaging device of this embodiment may be a laser printer, wherein a toner cartridge installation cavity is provided in the electronic imaging device, and a guide groove is provided on the side wall of the toner cartridge installation cavity, and a gap is provided at the bottom of the guide groove. The toner cartridge of this embodiment may be installed in the toner cartridge installation cavity, and the toner cartridge includes rotating parts such as a photosensitive drum and a developing roller, and a driving force transmission component is provided at the axial end of the rotating part.

[0053] First and second embodiments of the toner cartridge:

[0054] See also Figure 3 The toner cartridge 20 of this embodiment has a cartridge body 21, a toner containing chamber is provided in the cartridge body 21, toner is contained in the toner containing chamber, and a developing roller is provided on one side of the toner containing chamber, the developing roller includes a cylindrical barrel, and a driving force transmission assembly 30 is provided at one axial end of the barrel. Figure 4 and Figure 5 The driving force transmission assembly 30 includes a driving force receiving member 31, which can cooperate with the driving shaft 18 of the electronic imaging device 10, and the pin shaft 19 can drive the driving force receiving member 31 to rotate. The driving force transmission assembly 30 is also provided with a driving gear 40, which is meshed with a plurality of gears 61 and 62. The gears 61 and 62 include a developing roller gear, a stirring frame gear, etc. The driving gear 40 drives the gears 61 and 62 to rotate, thereby driving the powder feeding roller, the stirring frame, etc. to rotate synchronously with the developing roller.

[0055] The first embodiment of the driving force transmission assembly:

[0056] See also Figures 6 to 10The driving force transmission assembly 30 has a driving force receiving member 31 and a driving gear 40. The driving force receiving member 31 has a rod body 32 and a driving force receiving portion 34 located at one end of the rod body 32. The rod body 32 is a cylindrical rod body. A pin 33 is inserted into the middle of the rod body 32. Preferably, the rod body 32 is provided with a through hole extending perpendicular to the axis of the rod body 32. The pin 33 is inserted into the through hole, and the pin 33 is interference fit with the through hole. Therefore, the extension direction of the pin 33 is perpendicular to the axis of the rod body 32. The driving gear 40 has a cavity 42 with an open upper end. The rod body 32 is inserted into the driving gear 40, that is, extends into the cavity 42 of the driving gear 40.

[0057] The driving force receiving portion 34 is exposed to the driving gear 40. Specifically, the driving force receiving portion 34 is located on the side of the driving gear 40 closer to the driving shaft 18. The driving force receiving portion 34 is generally truncated cone-shaped, wherein the end surface of the driving force receiving portion 34 close to the driving gear 40 is the inner end surface 35, and the end surface away from the driving gear 40 is the outer end surface 36. Figure 7 It can be seen that the diameter of the inner end surface 35 is greater than the diameter of the outer end surface 36, and a guide surface 38 is formed between the inner end surface 35 and the outer end surface 36. Since the driving force receiving portion 34 is roughly truncated cone-shaped, the guide surface 38 is a truncated cone surface. In addition, on the cross-sectional surface along the axis of the driving force receiving portion 34, that is, Figure 7 Of course, in other embodiments, the guide surface 38 can also be a convex arc surface, that is, the outer contour line of the guide surface 38 is a convex arc line, which is also conducive to the cooperation between the driving force receiving member 31 and the driving shaft 18.

[0058] In this embodiment, the inner end surface 35 and the outer end surface 36 are both planes, and the diameter of the inner end surface 35 is between 10 cm and 24 cm. In addition, along the axis of the driving force receiving member 31, the diameter of the driving force receiving portion 34 gradually increases from the outer end surface 36 to the inner end surface 35, so the inner end surface 35 is the largest diameter of the driving force receiving portion 34.

[0059] Two driving force receiving teeth 37 are formed on the outer end surface 36 of the driving force receiving portion 34. The two driving force receiving teeth 37 extend outward from the outer end surface 36, that is, extend in the direction of the driving shaft 18. When the toner cartridge 20 is installed in the toner cartridge installation cavity, the pin shaft 19 abuts against the two driving force receiving teeth 37. When the driving shaft 18 rotates, the pin shaft 19 drives the driving force receiving teeth 37 to rotate, thereby driving the driving force receiving member 31 to rotate.

[0060] There is a concave positioning groove 39 at the center of the outer end face 36 of the driving force receiving part 34, and the end of the driving shaft 18 can slide into the positioning groove 39, so as to realize the positioning of the driving shaft 18 and the driving force receiving part 34. Furthermore, a magnet can be installed in the positioning groove 39. Since the driving shaft 18 is usually made of metal material, the driving shaft 18 can be better attracted to the positioning groove 39 by the magnet, and the cooperation between the driving force receiving part 31 and the driving shaft 18 is smoother. Of course, the outer end face of the magnet cannot exceed the outer end face 36 of the driving force receiving part 34, that is, the magnet will not exceed the positioning groove 39, so as to avoid affecting the cooperation between the driving shaft 18 and the driving force receiving part 34.

[0061] See also Fig. 9 and Fig.10 A spring 48 as a reset member of this embodiment is provided in the driving gear 40, and a mounting frame 50 is also provided. The mounting frame 50 has a ring-shaped body 51, and two mounting feet 52 are provided on one side of the body 51 close to the bottom of the driving gear 40, and a buckling portion 53 is provided at the end of each mounting foot 52. Two buckling members 43 are provided in the driving gear 40, and each buckling member 43 is provided with a buckling groove 45, and the buckling portion 53 can be buckled in the buckling groove 45, thereby achieving the fixing of the mounting frame 50 and the driving gear 40.

[0062] The spring 48 is abutted between the bottom wall of the driving gear 40 and the body 51 of the mounting frame 50. Preferably, a spring coil 49 is provided at one end of the spring 48 close to the body 51, and the spring coil 49 can be sleeved on the end of the pin 33. In addition, a through hole is provided in the middle of the body 51, and the rod body 32 of the driving force receiving member 31 passes through the through hole and extends into the driving gear 40. In addition, the pin 33 is located between the body 51 and the bottom wall of the driving gear 40, and the pin 33 can abut on the buckle 43. When the driving force receiving member 31 rotates, the pin 33 rotates with the rod body 32 and drives the driving gear 40 to rotate. The outer peripheral wall of the driving gear 40 is provided with teeth 41, and the teeth 41 are engaged with the teeth of the gears 61 and 62, thereby driving the gears 61 and 62 to rotate.

[0063] See also Fig.11 When the toner cartridge 20 is installed in the toner cartridge installation cavity of the electronic imaging device 10, the driving force receiving portion 34 will slide along the guide groove 11 to the bottom of the guide groove 11. In this embodiment, the diameter of the inner end surface 35 of the driving force receiving portion 34 is larger than the size of the gap 14 at the bottom of the guide groove 11 of the electronic imaging device 20. In this way, when the driving force receiving portion 34 slides along the guide groove 11 to the bottom, due to the larger size of the inner end surface 35, the driving force receiving portion 34 will not be stuck in the gap 14. In addition, due to the existence of the guide surface 38, the driving force receiving portion 34 will smoothly pass over the protrusion 17.

[0064] During the sliding process of the driving force receiving member 31 in the guide groove 11, the driving force receiving member 31 is actually squeezed and moves toward the driving gear 40, and the spring 48 is compressed at this time. Since the driving force receiving portion 34 is a structure with a smaller outer end surface 36 and a larger inner end surface 35, it is beneficial for the driving force receiving member 31 to move toward the driving gear 40, so that the driving force transmission assembly 30 can slide smoothly to a position matched with the driving shaft 18.

[0065] When the driving force transmission assembly 30 slides to the position that cooperates with the driving shaft 18, the driving force receiving member 31 is no longer squeezed, and under the action of the elastic restoring force of the spring 48, the driving force receiving member 31 moves in the direction away from the driving gear 40, that is, moves in the direction close to the driving shaft 18, and under the action of the magnet, the end of the driving shaft 18 enters the positioning groove 39. In order to limit the distance that the driving force receiving member 31 moves along the axis toward the driving shaft 18, the pin 33 can also abut against the inner end surface of the body 51 of the mounting frame 50, and the movement distance of the driving force receiving member 31 is limited by the cooperation between the body 51 and the pin 33, so the pin 33 constitutes a limiter of this embodiment.

[0066] When the drive shaft 18 rotates, the pin 19 rotates accordingly, and the pin 19 abuts against the two driving force receiving teeth 37, thereby driving the driving force receiving teeth 37 to rotate. In this embodiment, the two driving force receiving teeth 37 are integrally formed with the driving force receiving member 31, so the drive shaft 18 can drive the driving force receiving member 31 to rotate, and then drive the entire driving force transmission assembly 30 to rotate. Since the driving force receiving teeth 37 are integrally formed with the driving force receiving member 31, the production cost of the driving force transmission assembly 30 can be reduced, and its assembly process is simple.

[0067] The second embodiment of the driving force transmission assembly:

[0068] The driving force transmission assembly of this embodiment has a driving force receiving member and a driving gear, and is also provided with a mounting frame and a spring. Different from the first embodiment, the two driving force receiving teeth on the driving force receiving member of this embodiment are not integrally formed with the driving force receiving member. Fig.12 and Fig.13 The driving force receiving member 70 has a rod body 71 and a driving force receiving portion 72 located at one end of the rod body 71 . A through hole 90 is provided in the middle of the rod body 71 . The pin shaft can be inserted into the through hole 90 , and the pin shaft and the through hole 90 are interference fit.

[0069] The driving force receiving portion 72 is substantially in the shape of a truncated cone, wherein the end surface of the driving force receiving portion 72 close to the driving gear is an inner end surface 74, and the end surface away from the driving gear is an outer end surface 73. Fig.11It can be seen that the diameter of the inner end surface 74 is greater than the diameter of the outer end surface 73, and a guide surface 75 is formed between the inner end surface 74 and the outer end surface 73, and the guide surface 75 is a truncated cone surface. On the cross-sectional surface along the axis of the driving force receiving portion 72, the guide surface 75 is a plane. Of course, the guide surface 75 can also be an outer convex arc surface.

[0070] In this embodiment, the inner end surface 74 and the outer end surface 73 are both planes, and the diameter of the inner end surface 74 is between 10 cm and 24 cm. In addition, along the axis of the driving force receiving member 70, the diameter of the driving force receiving portion 72 gradually increases from the outer end surface 73 to the inner end surface 74, so the inner end surface 74 is the largest diameter of the driving force receiving portion 72. In addition, the diameter of the inner end surface 74 is larger than the size of the gap at the bottom of the guide groove of the electronic imaging device.

[0071] A concave positioning groove 76 is formed at the center of the outer end surface 73 of the driving force receiving portion 72, and a magnet is optionally placed in the positioning groove 76. In addition, two driving force receiving teeth 81, 85 are formed on the outer end surface 73 of the driving force receiving portion 72, and the two driving force receiving teeth 81, 85 both extend outward from the outer end surface 36. In this embodiment, the two driving force receiving teeth 81, 85 are movably mounted on the driving force receiving member 70, that is, the driving force receiving teeth 81, 85 are not integrally formed with the driving force receiving member 70.

[0072] Specifically, a mounting groove 77 is provided on the driving force receiving portion 72, and shaft holes 78 are provided on the two side walls of the mounting groove 77. A through hole 82 is provided in the middle of the driving force receiving tooth 81, and the pin shaft 83 can pass through the through hole 82, and the two ends of the pin shaft 83 are respectively inserted into the shaft hole 78. In addition, a torsion spring 84 is provided outside the pin shaft 83, and the two ends of the torsion spring 84 are respectively abutted against the bottom wall of the mounting groove 77 and the inner wall of the driving force receiving tooth 81.

[0073] Similarly, another mounting groove 79 is provided on the driving force receiving portion 72, and axial holes are provided on the two side walls of the mounting groove 79. A through hole 86 is provided in the middle of the driving force receiving tooth 85, and the pin shaft 87 can pass through the through hole 86, and the two ends of the pin shaft 87 are respectively inserted into the axial holes of the mounting groove 79. In addition, a torsion spring 88 is provided outside the pin shaft 87, and the two ends of the torsion spring 88 are respectively abutted against the bottom wall of the mounting groove 79 and the inner wall of the driving force receiving tooth 85.

[0074] In this way, the driving force receiving teeth 81 and 85 can rotate around the pin shaft 83 relative to the driving force receiving portion 72. During the engagement process between the driving shaft 18 and the driving force transmission assembly 70, the driving force receiving teeth 81 and 85 can rotate, which is beneficial to the smooth installation of the toner cartridge.

[0075] Since the inner end surface 74 of the driving force receiving portion 72 is relatively large, when the driving force receiving portion 72 slides to the bottom along the guide groove during installation of the toner cartridge, it will not be stuck in the gap, which is beneficial to the installation of the toner cartridge.

[0076] Toner cartridge third embodiment:

[0077] See also Fig.14 and Fig.15 The toner cartridge of this embodiment has a cartridge body 100, a toner containing chamber is provided in the cartridge body 100, and at least one rotating member is provided, for example, a developing roller 101 is provided, and the developing roller 101 is driven by a driving gear 102. A driving force transmission assembly 110 is provided at one end of the toner cartridge, see Fig.16 The driving force transmission assembly 110 has a driving gear 111 , and the outer peripheral wall of the driving gear 111 is provided with teeth 112 . The driving gear 111 meshes with the driving gear 102 and drives the developing roller 101 to rotate.

[0078] The third embodiment of the driving force transmission assembly:

[0079] See also Fig.16 and Fig.17 The driving force transmission assembly 100 also has a driving force receiving member 130, which has a rod body 131 and a driving force receiving portion 133 located at one end of the rod body 131. The rod body 133 is a cylindrical rod body, and a pin 132 is inserted into the middle of the rod body 131. Preferably, the rod body 131 is provided with a through hole extending perpendicular to the axis of the rod body 131, and the pin 132 is inserted into the through hole, and the pin 132 is interference fit with the through hole. Therefore, the extension direction of the pin 132 is perpendicular to the axis of the rod body 131. In this embodiment, the pin 132 serves as an abutment member and is detachably connected to the rod body 131. In other embodiments, the pin 132 can be integrally formed with the rod body 131. In addition, in the radial direction of the rod body 131, the size of the pin 132 is larger than the size of the rod body 131, so that the spring 127 as a reset member can reliably abut on the pin 132.

[0080] The driving gear 111 has a cavity 113 with an open upper end. The rod 131 is inserted into the driving gear 111 , that is, extends into the cavity 113 of the driving gear 111 .

[0081] The driving force receiving portion 133 is exposed on the driving gear 111. Specifically, the driving force receiving portion 133 is located on the side of the driving gear 111 closer to the driving shaft. The driving force receiving portion 133 is roughly truncated cone-shaped, wherein the end surface of the driving force receiving portion 133 close to the driving gear 111 is the inner end surface, and the end surface away from the driving gear 111 is the outer end surface 134. Fig.17It can be seen that the diameter of the inner end face is larger than the diameter of the outer end face 134, and a guide surface is formed between the inner end face and the outer end face 134. In this embodiment, the guide surface is a plane on the cross-sectional surface along the axis of the driving force receiving portion 134. Of course, in other embodiments, the guide surface may also be an outer convex arc surface. Preferably, the inner end face and the outer end face 134 of the driving force receiving portion 133 are both planes, and along the axis of the driving force receiving member 130, the diameter of the driving force receiving portion 133 gradually increases from the outer end face 134 to the inner end face, and therefore, the inner end face is the largest diameter of the driving force receiving portion 133. Furthermore, the diameter of the inner end face of the driving force receiving portion 133 is larger than the size of the gap at the bottom of the guide groove of the electronic imaging device.

[0082] Two driving force receiving teeth 137 are formed on the outer end surface 134 of the driving force receiving portion 133, and the two driving force receiving teeth 137 both extend outward from the outer end surface 136. The two driving force receiving teeth 137 of this embodiment are both detachably mounted on the driving force receiving portion 133, that is, the structure of the driving force receiving teeth of the second embodiment of the driving force transmission assembly is the same, and no further description is given here. Of course, the driving force receiving teeth can also be integrally formed with the driving force receiving portion.

[0083] There is a concave positioning groove 135 at the center of the outer end surface 134 of the driving force receiving part 133, and the end of the driving shaft of the electronic imaging device can slide into the positioning groove 135, so as to realize the positioning of the driving shaft and the driving force receiving part 133. In this embodiment, two magnets 136 can be installed in the positioning groove 135, and the two magnets 136 are both cylindrical and of the same size. The two magnets 136 are installed in the positioning groove 135 in a stacked manner. Since the driving shaft is usually made of metal material, the driving shaft can be better attracted to the positioning groove 135 by the magnet 136, and the cooperation between the driving force receiving part 130 and the driving shaft is smoother. Of course, the outer end surface of the magnet 136 cannot exceed the outer end surface 134 of the driving force receiving part 133 to avoid affecting the cooperation between the driving shaft and the driving force receiving part 133.

[0084] The driving gear 111 is further provided with a mounting frame 120, which has a body 121, and two mounting feet 122 are provided on one side of the body 121 close to the bottom of the driving gear 111, see Fig.18 and Fig.19 , a buckling portion 123 is provided at the end of each mounting foot 122. Two buckling members 114 are provided in the driving gear 11, and each buckling member 114 is provided with a buckling groove 116, and the buckling portion 123 can be buckled in the buckling groove 116, thereby achieving the fixing of the mounting frame 120 and the driving gear 111.

[0085] In addition, a limiting groove 115 is also provided in the driving gear 111, and the end of the pin shaft 132 is limited in the limiting groove 115, so that when the driving force receiving member 130 rotates, the pin shaft 132 follows the rotation and drives, and pushes the side wall of the limiting groove 115 to drive the driving gear 111 to rotate.

[0086] A spring 127 as a reset member is installed in the driving gear 111, and the spring 127 is sleeved outside the rod body 131. In addition, the spring 127 abuts between the pin shaft 132 and the bottom wall 124 of the body 121 of the mounting frame 120. In this way, when the driving force receiving member 130 is not subjected to external force, the spring 127 applies a force to the pin shaft 132, and the driving force receiving portion 133 moves in a direction close to the driving gear 111 under the action of the spring 127. Fig.16 As shown, when the driving force receiving member 130 is not subjected to external force, for example, the toner cartridge is not installed in the toner cartridge installation cavity, that is, before the power receiving portion 133 is not engaged with the driving shaft, the distance between the outer end surface 134 of the driving force receiving portion 130 and the outer end surface 118 of the driving gear is a first distance D1. The outer end surface 118 of the driving gear is the end surface of the driving gear 111 close to the driving force receiving portion 130.

[0087] When the toner cartridge is installed in the toner cartridge installation cavity, under the action of the magnet 136, the driving force receiving portion 133 approaches the driving shaft and meshes with the driving shaft. Fig. 20 As shown, at this time, the distance between the outer end surface 134 of the driving force receiving part 130 and the outer end surface 118 of the driving gear is the second distance D2, and the first distance D1 is smaller than the second distance D2, that is, after the driving force receiving part 133 is engaged with the driving shaft, the driving force receiving member 130 extends outward, that is, extends in the direction of the driving shaft. At this time, the spring 127 is compressed.

[0088] When the toner cartridge is taken out from the toner cartridge installation cavity, the driving force receiving portion 133 is no longer meshed with the driving shaft, and the driving force receiving member 130 moves toward the driving gear 111 under the elastic restoring force of the spring 127. In order to prevent the driving force receiving portion 133 from impacting the driving gear 111, a buffer member 128 is provided between the driving force receiving portion 133 and the mounting frame 120. In this embodiment, the buffer member 128 is made of sponge, and a through hole 129 is provided in the middle of the buffer member 128, through which the rod body 131 of the driving force receiving member 130 can pass.

[0089] It can be seen that during the installation of the toner cartridge, before the driving force receiving portion 133 is engaged with the driving shaft, the driving force receiving portion 133 is in a retracted state, so it is not easily affected by the guide groove, which is conducive to the installation of the toner cartridge, and the driving force receiving portion 133 is not easy to slide into the gap, so the installation of the toner cartridge is smoother. After the toner cartridge is installed in the toner cartridge installation cavity, under the action of the magnet 136, the driving force receiving portion 133 is firmly engaged with the driving shaft to ensure the operation of the toner cartridge.

[0090] Of course, in this embodiment, the magnet is set on the driving force receiving member 130. In actual application, the magnet can also be set on the driving shaft of the electronic imaging device, or magnets can be set on both the driving force receiving member 130 and the driving shaft, but the polarity of the magnet of the driving force receiving member 130 is opposite to that of the magnet of the driving shaft.

[0091] It should be noted that the above-mentioned driving force transmission assembly can be used not only to drive the developing roller, but also to drive rotating parts such as the photosensitive drum or the powder feeding roller. In addition, the driving force receiving part may not be provided with a magnet, and the entire driving force receiving part may be made of magnetic material, or the driving shaft of the electronic imaging device may be made of magnetic material, and the same technical effect can be achieved.

[0092] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles of the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. Driving force transmission components, including: A driving force receiving member and a driving gear, wherein the driving force receiving member comprises a rod body and a driving force receiving portion located at one end of the rod body, and the rod body is inserted into the driving gear and drives the driving gear to rotate; Features: A mounting frame is arranged inside the driving gear, and a main body of the mounting frame is arranged at one end of the driving gear close to the driving force receiving portion; An abutment member is provided on the rod body, and a reset member is provided between the abutment member and the main body of the mounting frame; The driving force receiving portion is engaged with the driving shaft, and at least one of the driving force receiving portion and the driving shaft includes a magnetic material; Before the toner cartridge is installed in the toner cartridge installation cavity of the electronic imaging device, the reset member forces the abutment member to move in a direction away from the mounting frame, so that the driving force receiving member is in a retracted state; When the toner cartridge is installed in the toner cartridge installation cavity, the driving force receiving portion is attracted to the driving shaft under the force of the magnetic material.

2. The driving force transmission assembly according to claim 1, characterized in that: The abutment member includes a pin shaft penetrating the rod body, or the abutment member is integrally formed with the rod body; In the radial direction of the driving gear, the size of the abutment member is larger than the size of the rod body.

3. The driving force transmission assembly according to claim 2, characterized in that: The reset member is a spring, a first end of the spring abuts against the body, and a second end of the spring abuts against the abutting member.

4. The driving force transmission assembly according to any one of claims 1 to 3, characterized in that: A positioning groove is provided at the outer end surface of the driving force receiving portion, and the magnetic material is installed in the positioning groove.

5. The driving force transmission assembly according to claim 4, characterized in that: The magnetic material is a magnet, the number of the magnets is more than two, and a plurality of the magnets are stacked and arranged in the positioning groove.

6. The driving force transmission assembly according to any one of claims 1 to 3, characterized in that: A buffer is provided between the driving force receiving portion and the mounting bracket.

7. The driving force transmission assembly according to any one of claims 1 to 3, characterized in that: Before the driving force receiving portion is engaged with the driving shaft, the distance between the outer end surface of the driving force receiving portion and the outer end surface of the driving gear is a first distance; After the driving force receiving portion is meshed with the driving shaft, the distance between the outer end surface of the driving force receiving portion and the outer end surface of the driving gear is a second distance; The first distance is smaller than the second distance.

8. A rotating member, including a cylinder, characterized in that: The axial end of the cylinder is provided with a driving force transmission assembly as claimed in any one of claims 1 to 7.

9. A toner cartridge, comprising a cartridge body, wherein a toner accommodating chamber is formed in the cartridge body, wherein: The box body is also provided with a rotating member as claimed in claim 8.

10. An electronic imaging device, comprising a housing, wherein a toner cartridge installation cavity is provided in the housing, and a side wall of the toner cartridge installation cavity has a guide groove, wherein: The toner cartridge as claimed in claim 9 is installed in the toner cartridge installation cavity.

Images