Driving force receiving member and toner cartridge

Abstract

This utility model provides a driving force receiving component and a toner cartridge. The driving force receiving component includes a body with a coupling portion and a gear portion disposed on the outer periphery of the coupling portion. The coupling portion has a plug-in position, within which are two first limiting blocks and two slots, which are alternately distributed along the circumference of the plug-in position. The driving force receiving component also includes two sets of switching components, each corresponding to one of the two slots. Each switching component includes a second limiting block and an elastic element. The second limiting block is slidably installed in the slot, and the elastic element forces the second limiting block to move towards the inlet / outlet of the plug-in position. Along the driving direction of the driving force receiving component, the upstream end of the first limiting block has a first engagement surface, and the upstream end of the second limiting block has a second engagement surface, located in the inner region enclosed by the two first limiting blocks. The toner cartridge includes this driving force receiving component, which is compatible with different models of electrophotographic imaging equipment.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging technology, specifically to a driving force receiving component and a toner cartridge equipped with the driving force receiving component. Background Technology

[0002] In existing electrophotographic imaging equipment, the supply of toner (such as toner) is usually accomplished by a toner cartridge, which is detachably installed in the toner cartridge mounting cavity of the electrophotographic imaging equipment. The photosensitive drum, developing roller, toner delivery roller, and stirring frame of the toner cartridge are linked by a gear set, and the driving force receiving component in the gear set receives the driving force transmitted by the drive head in the electrophotographic imaging equipment, so that the photosensitive drum, developing roller, toner delivery roller, and stirring frame can rotate relative to each other at a set speed and direction.

[0003] However, due to structural design issues, the drive force receiving components of most toner cartridges currently on the market are only compatible with one type of electrophotographic imaging device. This results in poor compatibility with different brands or models of electrophotographic imaging devices, and increases the user's operating costs. Utility Model Content

[0004] To address the aforementioned problems, the primary objective of this invention is to provide a driving force receiving component that is compatible with different models of electrophotographic imaging devices and helps reduce user operating costs.

[0005] The second objective of this invention is to provide a toner cartridge that is compatible with different models of electrophotographic imaging devices, thereby helping to reduce user costs.

[0006] To achieve the first objective of this utility model, a driving force receiving component is provided, comprising a body having a coupling portion and a gear portion disposed on the outer periphery of the coupling portion. The coupling portion has a plug-in position, wherein the plug-in position has two first limiting blocks and two slots, which are alternately distributed along the circumference of the plug-in position. The driving force receiving component also includes two sets of switching components, which correspond one-to-one with the two slots. Each switching component includes a second limiting block and an elastic element. The second limiting block is slidably installed in the slot, and the elastic element forces the second limiting block to move toward the entrance / exit of the plug-in position. Along the driving direction of the driving force receiving component, the upstream end of the first limiting block has a first engagement surface, and the upstream end of the second limiting block has a second engagement surface, which is located in the inner region enclosed by the two first limiting blocks.

[0007] As can be seen from the above, through the structural design of the driving force receiving component, when the driving force receiving component is coupled with a larger driving head, the driving block of the driving head pushes the second limiting block to move towards the bottom of the slot, thereby exposing the first engagement surface of the first limiting block. Subsequently, when the driving head drives the driving force receiving component, the driving block of the driving head couples with the first engagement surface to achieve driving force transmission. When the driving force receiving component is coupled with a smaller driving head, due to the smaller size of the driving head, the driving block of the driving head cannot push the second limiting block into the slot. Subsequently, when the driving head drives the driving force receiving component, the driving block of the driving head couples with the second engagement surface to achieve driving force transmission. Thus, the driving force receiving component can achieve driving force transmission by coupling with driving heads of different sizes through the first limiting block and the second limiting block, which has good compatibility, greater practicality, and helps to reduce user operating costs.

[0008] A further embodiment is that the inner side of the first limiting block has a first limiting arc surface, which is located between the upstream and downstream ends of the first limiting block along the driving direction; the inner side of the second limiting block has a second limiting arc surface, which is located between the upstream and downstream ends of the second limiting block along the driving direction, and both the second mating surface and the second limiting arc surface are located inside the first limiting arc surface.

[0009] As can be seen above, the first limiting arc surface cooperates with the column of the larger drive head to provide radial support and limit the drive head, preventing positional displacement when the drive head transmits driving force and improving driving stability. The second limiting arc surface cooperates with the column of the smaller drive head to provide radial support and limit the drive head, preventing positional displacement when the drive head transmits driving force and improving driving stability. By setting different limiting arc surfaces, targeted support and limiting can be achieved for drive heads of different sizes, avoiding situations where small-sized drive heads cannot be effectively supported and limited during driving.

[0010] A further alternative is that the upstream end of the second limiting block has a protrusion, and a portion of the second mating surface is formed on the protrusion.

[0011] As can be seen from the above, based on the structural characteristics of the column part of the small-sized drive head, by setting the protrusion, after the drive head is coupled with the second joint surface, the second joint surface can expand the coupling area with the drive block of the drive head through the protrusion, and at the same time have a certain axial limiting effect, preventing the drive head from jumping in the axial direction during the driving process, thereby ensuring the stability and reliability of the driving force transmission.

[0012] A further proposed solution is that the first mating surface is a plane; the second mating surface is a group of surfaces, which includes planes and curved surfaces.

[0013] As can be seen from the above, setting the first mating surface as a plane can ensure the coupling strength and coupling effect on the one hand, and facilitate the smooth separation of the drive head and the drive force receiving component on the other hand; while setting the second mating surface as a group of surfaces can ensure the coupling strength and coupling effect, and will not hinder the separation of the drive head and the drive force receiving component.

[0014] A further solution is that the top of the first limiting block is provided with a first guide surface, which gradually extends into the insertion position along the driving direction; the top of the second limiting block is provided with a second guide surface, which gradually extends into the insertion position along the driving direction.

[0015] As can be seen from the above, the first guide surface can quickly and accurately guide the drive block of the larger drive head to rotate to couple with the first engagement surface; similarly, the second guide surface can quickly and accurately guide the drive block of the smaller drive head to rotate to couple with the second engagement surface.

[0016] A further solution is to have a third limiting block inside the slot, with the second limiting block located between the third limiting block and the bottom of the slot.

[0017] As can be seen from the above, the second limit block is limited by the third limit block to prevent the second limit block from coming off the body under the action of the elastic element.

[0018] A further improvement is that the slot is also equipped with a guide bar that extends along the depth of the slot; the second limiting block is equipped with a guide groove that extends along the depth, and the guide bar is slidably connected to the guide groove.

[0019] As can be seen from the above, this design helps to ensure the reliability of the slot's positioning and guiding of the second limiting block, while reducing the friction between the two, thereby improving the convenience and reliability of coupling and docking between the large-sized drive head and the drive force receiving component.

[0020] A further improvement is that the guide groove is provided with a first arc-shaped protrusion, the arc surface of which can contact the guide bar; along the driving direction, the two ends of the second limiting block are provided with second arc-shaped protrusions, the arc surface of which contacts the first limiting block.

[0021] As can be seen from the above, the design helps to further reduce the friction between the slot and the second limiting block.

[0022] A further design includes a guide post extending along the depth of the slot, with a compression spring as the elastic element. The compression spring is fitted onto the guide post, and the second limiting block has a clearance position. The guide post and the compression spring extend into the clearance position. The guide post is in the shape of a stepped shaft, and the second limiting block also has a through hole that penetrates the second limiting block in the depth direction and communicates with the clearance position. The small-diameter shaft section of the guide post can be inserted into the through hole.

[0023] As can be seen from the above, setting guide posts to support and limit the spring can prevent the compression spring from bending laterally during compression, thereby ensuring the reliable reset of the compression spring and the second limiting block; while setting the guide posts as stepped shafts and setting through holes on the second limiting block can reduce the clearance distance of the second limiting block, thereby reducing the depth of the slot.

[0024] To achieve another objective of this utility model, this utility model provides a toner cartridge, including a gear set, wherein the gear set includes the aforementioned driving force receiving component.

[0025] As can be seen from the above, by incorporating the aforementioned driving force receiving component, the toner cartridge becomes compatible with different models of electronic photographic imaging equipment, thereby enhancing the practicality of the toner cartridge and helping to reduce user operating costs. Attached Figure Description

[0026] Figure 1 This is a structural diagram of an embodiment of the driving force receiving component of this utility model.

[0027] Figure 2 This is an exploded view of an embodiment of the driving force receiving component of this utility model.

[0028] Figure 3 This is a structural diagram of the second limiting block from a first-view perspective of an embodiment of the driving force receiving component of this utility model.

[0029] Figure 4 This is a structural diagram of the second limiting block from a second perspective in an embodiment of the driving force receiving component of this utility model.

[0030] Figure 5 This is a structural diagram showing the coupling connection between the driving force receiving component and a small-sized driving head (first driving head) in an embodiment of the driving force receiving component of this utility model.

[0031] Figure 6 This is a structural diagram of the small-sized drive head (first drive head).

[0032] Figure 7 This is a cross-sectional view of the driving force receiving component of this utility model coupled to a small-sized driving head (first driving head) in an embodiment of the driving force receiving component.

[0033] Figure 8 This is a structural diagram of the drive force receiving component of this utility model, after the drive force receiving component is coupled to a large-sized drive head (first drive head) with some components omitted.

[0034] Figure 9 This is a structural diagram of the large-sized drive head (second drive head).

[0035] Figure 10 This is a cross-sectional view of the driving force receiving component of this utility model coupled to a large-sized driving head (second driving head) in an embodiment of the driving force receiving component.

[0036] Figure 11 This is a state diagram of the driving force receiving component of this utility model when it is coupled to a large-sized driving head (second driving head).

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0038] Example of a driving force receiving component Reference Figure 1 and Figure 2 The driving force receiving component 100 includes a main body 1 and a switching component 2. The switching component 2 is mounted on the main body 1. By switching the position of the switching component 2, the driving force receiving component 100 can be compatible with driving heads of different sizes, thereby being compatible with different models of electronic photographic imaging equipment.

[0039] The main body 1 has a coupling part 11 and a gear part 12. The gear part 12 surrounds the outer periphery of the coupling part 11 and is located at one end of the coupling part 11. The coupling part 11 is used for coupling and docking between the drive block and the drive column of the drive head, so as to transmit the driving force of the drive head to the drive force receiving component 100, and then transmit it to the developing roller, photosensitive drum, powder feeding roller, stirring frame and other components of the toner cartridge through the gear set, so as to control the developing roller, photosensitive drum, powder feeding roller, stirring frame and other components to rotate according to the set speed and direction; the gear part 12 is used to mesh with other gears in the gear set to realize the transmission of power.

[0040] The coupling part 11 is provided with a plug-in position 111, which is recessed into the coupling part 11 from the end face away from the gear part 12. The plug-in position 111 is provided with two first limiting blocks 112 and two slots 113, wherein the two first limiting blocks 112 and the two slots 113 are alternately distributed along the circumference of the plug-in position 111, and the first limiting blocks 112 and the slots 113 are adjacent to each other.

[0041] Along the driving direction R of the driving force receiving component 100, the upstream end of the first limiting block 112 has a first engagement surface 1121. The first engagement surface 1121 is used for coupling and docking with the second driving block 41 of the larger driving head (second driving head 4), so that the second driving head 4 can drive the driving force receiving component 100 to rotate through the second driving block 41 and the first engagement surface 1121. It can be understood that the first engagement surface 1121 is located at the junction of the first limiting block 112 and the slot 113. Preferably, the first engagement surface 1121 is a plane. This design can ensure the coupling strength and coupling effect between the first engagement surface 1121 and the second driving block 41 on the one hand, and facilitate the smooth separation of the second driving head 4 from the driving force receiving component 100 on the other hand.

[0042] The inner side of the first limiting block 112 (i.e., the side facing the second drive column 42 of the second drive head 4) forms a first limiting arc surface 1122; along the driven direction R, the first limiting arc surface 1122 is located between the upstream end and the downstream end of the first limiting block 112. It can be seen that the first limiting arc surface 1122 is used to independently cooperate with the second drive column 42 of the larger drive head, so that the first limiting arc surface 1122 can fit against the circumferential surface of the second drive column 42, thereby achieving radial support and limiting of the second drive head 4, preventing positional displacement when the second drive head 4 transmits power, and improving the stability of the drive.

[0043] The top surface of the first limiting block 112 is provided with a first guide surface 1123. Along the driving direction R, the first guide surface 1123 gradually extends into the insertion position 111 at an angle. That is, along the driving direction R, the distance between the upstream end of the first guide surface 1123 and the inlet / outlet 1111 of the insertion position 111 is smaller than the distance between the downstream end of the first guide surface 1123 and the inlet / outlet 1111 of the insertion position 111. The first guide surface 1123 is used to quickly and accurately guide the second driving block 41 of the larger driving head to rotate into the insertion position 111, and to ensure that the second driving block 41 presses down on the switching component 2, thereby causing the second driving block 41 to rotate into the slot 113, until the second driving block 41 rotates to couple and engage with the first mating surface 1121.

[0044] Combination Figure 3 and Figure 4 There are two sets of switching components 2, each corresponding to one of the two slots 113, such that one set of switching components 2 is fitted into the corresponding first slot 113. The switching component 2 includes a second limiting block 21 and an elastic member. The second limiting block 21 is slidably mounted in the slot 113 in the depth direction, and the elastic member is used to force the second limiting block 21 to move toward the inlet / outlet 1111 of the insertion position 111.

[0045] Along the driving direction R, the upstream end of the second limiting block 21 has a second engagement surface 211, and the second engagement surface 211 is located in the inner region enclosed by the two first limiting blocks 112, that is, the second engagement surface 211 is located in the region enclosed by the first limiting arc surface 1122, so that the second engagement surface 211 is located inside the first limiting arc surface 1122. The second engagement surface 211 is used for coupling and docking with the first driving block 31 of the smaller driving head (first driving head 3), so that the first driving head 3 can drive the driving force receiving component 100 to rotate through the first driving block 31 and the second engagement surface 211.

[0046] Preferably, the upstream end of the second limiting block 21 has a protrusion 213, which protrudes inward toward the second limiting block 21, and a portion of the second mating surface 211 is formed on the protrusion 213; wherein, the second mating surface 211 is a surface assembly (such as... Figure 1 , Figure 3 (As shown by the red lines in the middle), the surface group includes flat and curved surfaces. Based on the structural characteristics of the columnar part of the small-sized drive head, by setting the protrusion 213, after the first drive head 3 is coupled with the second mating surface 211, the second mating surface 211 can expand the coupling area with the first drive block 31 of the first drive head 3 through the protrusion 213, and at the same time have a certain axial limiting effect to prevent the first drive head 3 from jumping axially during the driving process, thereby ensuring the stability and reliability of the driving force transmission; and by setting the second mating surface 211 as a surface group, the coupling strength and coupling effect can be ensured, and at the same time, it will not hinder the separation of the drive head and the driving force receiving component 100.

[0047] The inner side of the second limiting block 21 (i.e., the side facing the first drive column 32 of the first drive head 3) has a second limiting arc surface 212. Along the driven direction R, the second limiting arc surface 212 is located between the upstream and downstream ends of the second limiting block 21. It can be understood that the second limiting arc surface 212 is also located inside the first limiting arc surface 1122. The second limiting arc surface 212 is used to independently cooperate with the first drive column 32 of the smaller drive head, so that the second limiting arc surface 212 can fit against the circumferential surface of the first drive column 32, thereby achieving radial support and limiting of the first drive head 3, preventing positional deviation when the first drive head 3 transmits power, and improving the stability of the drive. It can be seen that by setting different limiting arc surfaces to cooperate with drive heads of different sizes, the driving force receiving component 100 can provide targeted support and limiting for drive heads of different sizes, avoiding the inability of small-sized drive heads to obtain effective support and limiting during the driving process.

[0048] The top of the second limiting block 21 is provided with a second guide surface 214. Along the driving direction R, the second guide surface 214 gradually extends into the insertion position 111 at an angle. That is, along the driving direction R, the distance between the upstream end of the second guide surface 214 and the inlet / outlet 1111 of the insertion position 111 is smaller than the distance between the downstream end of the second guide surface 214 and the inlet / outlet 1111 of the insertion position 111. The second guide surface 214 is used to quickly and accurately guide the first driving block 31 of the smaller driving head to rotate into the insertion position 111, and to ensure that the first driving block 31 rotates to couple and engage with the second mating surface 211 of the second limiting block 21.

[0049] In addition, a limiting platform 115 is provided in the insertion position 111. The limiting platform 115 is located in the area enclosed by two first limiting blocks 112 and two slots 113. The limiting platform 115 is lower than the top of the first limiting blocks 112 and higher than the bottom of the slots 113. The limiting platform 115 is used to cooperate with the drive column of the drive head (such as the first drive column 32 of the first drive head 3 and the second drive column 42 of the second drive head 4) to support and limit the drive column.

[0050] Furthermore, a third limiting block 114 is provided in the slot 113, and the second limiting block 21 is located between the third limiting block 114 and the bottom of the slot 113, so that the third limiting block 114 limits the second limiting block 21 and prevents the second limiting block 21 from coming out of the body 1 under the action of the elastic element.

[0051] To reduce the frictional force of the second limiting block 21 sliding relative to the slot 113, a guide strip 1131 is provided inside the slot 113, extending along the depth direction of the slot 113. Simultaneously, a guide groove 215 is provided on the second limiting block 21, also extending along the depth direction of the slot 113. When the second limiting block 21 is installed in the slot 113, the guide strip 1131 is located within the guide groove 215 and slidably connected to it. Thus, through the cooperation of the guide strip 1131 and the guide groove 215, the second limiting block 21 is guided and limited during its sliding process; furthermore, the contact area between the second limiting block 21 and the slot 113 is reduced, thereby reducing the frictional force between them. This makes the coupling and docking of the large-sized drive head and the drive force receiving part more reliable and convenient.

[0052] Furthermore, the guide groove 215 is provided with a first arc-shaped protrusion 2151, and the arc surface of the first arc-shaped protrusion 2151 can contact the guide bar 1131, so that the guide bar 1131 and the guide groove 215 (first arc-shaped protrusion 2151) make line contact, thereby ensuring contact stability and reducing friction. In addition, along the driven direction R, the two ends of the second limiting block 21 are also provided with second arc-shaped protrusions 216, which contact the second limiting block 21, so that the second limiting block 21 (second arc-shaped protrusion 216) and the first limiting block 112 make line contact, thereby ensuring contact stability and reducing friction.

[0053] To ensure the reliability of the second limiting block 21's reset, a guide post 1132 is provided within the slot 113, extending along the depth direction of the slot 113. Simultaneously, a compression spring is preferably used as the elastic element, fitted onto the guide post 1132. This allows the guide post 1132 to support and limit the spring, effectively preventing lateral bending during compression and ensuring the reliability of the reset of the compression spring and the second limiting block 21. The second limiting block 21 is provided with a recess 217, which is recessed into the second limiting block 21 from the side facing the bottom of the slot 113. After the second limiting block 21 is installed in the slot 113, the guide post 1132 and the compression spring extend into the recess 217.

[0054] Furthermore, the guide post 1132 is in the shape of a stepped shaft, and the second limiting block 21 is also provided with a through hole 218. The hole penetrates the second limiting block 21 in the depth direction of the slot 113, so that the through hole 218 communicates with the clearance position 217. When the driving force receiving component 100 is coupled to the larger driving head (i.e., the second driving head 4), the second limiting block 21 is pressed against the bottom of the slot 113. At this time, the small-diameter shaft section of the guide post 1132 is inserted into the through hole 218. By setting the guide post 1132 in the shape of a stepped shaft and providing a through hole 218 on the second limiting block 21, the through hole 218 can avoid the guide post 1132, thereby reducing the clearance distance of the second limiting block 21, and ultimately reducing the depth of the slot 113.

[0055] The following is a brief explanation of how the driving force receiving component 100 is coupled and connected to driving heads of different sizes: Combining 5 to Figure 7 For the smaller drive head—the first drive head 3, the distance between its two first drive blocks 31 is smaller, and the diameter of the first drive column 32 is also smaller, so that the overall drive part composed of the first drive block 31 and the first drive column 32 is smaller than the distance between the two first limit blocks 112.

[0056] Therefore, when the first driving head 3 is coupled to the driving force receiving component 100, the two first driving blocks 31 first contact the two second limiting blocks 21. As the first driving head 3 drives the driving force receiving component 100 to rotate along the driven direction R, the first driving block 31 rotates with the second guide surface 214 to the space between the two first limiting blocks 112. Since the driving part composed of the first driving block 31 and the first driving column 32 is smaller than the distance between the two first limiting blocks 112, the first driving head 3 is further inserted into the insertion position 111. Then, as the first driving head 3 drives the driving force receiving component 100 to rotate along the driven direction R, the first driving block 31 is coupled to the second mating surface 211, thereby enabling the first driving head 3 to continuously drive the driving force receiving component 100 to rotate along the driven direction R.

[0057] Combination Figures 8 to 11 For the larger drive head—the second drive head 4, the distance between its two second drive blocks 41 is larger, and the diameter of the second drive column 42 is also larger, so that the overall drive part composed of the second drive block 41 and the second drive column 42 is larger than the distance between the two first limit blocks 112.

[0058] Therefore, when the second driving head 4 is coupled to the driving force receiving component 100, the two second driving blocks 41 first contact the two first limiting blocks 112. As the second driving head 4 drives the driving force receiving component 100 to rotate along the driven direction R, the second driving blocks 41 rotate with the first guide surface 1123 to above the second limiting block 21, so that the second driving head 4 penetrates into the insertion position 111 and presses the second limiting block 21 into the slot 113, thereby exposing the first mating surface 1121 of the first limiting block 112. Then, as the second driving head 4 drives the driving force receiving component 100 to rotate along the driven direction R, the second driving blocks 41 are coupled to the first mating surface 1121, thereby allowing the second driving head 4 to continuously drive the driving force receiving component 100 to rotate along the driven direction R.

[0059] In summary, the structural design of the driving force receiving component 100 allows for the following: when coupled to a larger driving head, the driving block of the driving head pushes the second limiting block 21 towards the bottom of the slot 113, exposing the first engagement surface 1121 of the first limiting block 112. Subsequently, when the driving head drives the driving force receiving component 100, the driving block of the driving head couples with the first engagement surface 1121 to achieve driving force transmission. When coupled to a smaller driving head, the driving block of the driving head cannot push the second limiting block 21 into the slot 113 due to the smaller size of the driving head. Subsequently, when the driving head drives the driving force receiving component 100, the driving block of the driving head couples with the second engagement surface 211 to achieve driving force transmission. Therefore, the driving force receiving component 100 can achieve driving force transmission by coupling with driving heads of different sizes through the first limiting block 112 and the second limiting block 21, exhibiting good compatibility and enhanced practicality, thus helping to reduce user costs.

[0060] Toner cartridge examples The toner cartridge includes a cartridge body, a developing roller, a photosensitive drum, a powder delivery roller, a stirring frame, and a gear set. The developing roller, photosensitive drum, powder delivery roller, and stirring frame are all rotatably mounted on the cartridge body around their own axes. The gear set is connected to the developing roller, photosensitive drum, powder delivery roller, and stirring frame respectively, so that the gear set can drive the developing roller, photosensitive drum, powder delivery roller, and stirring frame to rotate at a preset speed and direction. The gear set includes the drive force receiving component described in the above-mentioned embodiment. The gear portion of the drive force receiving component meshes with other gears in the gear set, so that after the drive force receiving component receives the driving force transmitted from the drive head within the electrophotographic imaging device, it drives the other gears in the gear set to rotate. By incorporating the aforementioned drive force receiving component, the toner cartridge becomes compatible with different models of electrophotographic imaging devices, thereby improving the practicality of the toner cartridge and helping to reduce user operating costs.

[0061] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A driving force receiving component, comprising a body having a coupling portion and a gear portion disposed on the outer periphery of the coupling portion, the coupling portion having a insertion position, characterized in that: The insertion position is provided with two first limiting blocks and two slots, and the two first limiting blocks and the two slots are alternately distributed along the circumference of the insertion position; The driving force receiving component also includes two sets of switching components, each set of switching components corresponding to one of the two slots. Each switching component includes a second limiting block and an elastic element. The second limiting block is slidably installed in the slot, and the elastic element forces the second limiting block to move toward the inlet and outlet of the insertion position. Along the driving direction of the driving force receiving component, the upstream end of the first limiting block has a first engagement surface, and the upstream end of the second limiting block has a second engagement surface, the second engagement surface being located in the inner region enclosed by the two first limiting blocks.

2. The driving force receiving component according to claim 1, characterized in that: The inner side of the first limiting block has a first limiting arc surface, and along the driving direction, the first limiting arc surface is located between the upstream end and the downstream end of the first limiting block. The inner side of the second limiting block has a second limiting arc surface. Along the driving direction, the second limiting arc surface is located between the upstream end and the downstream end of the second limiting block. The second mating surface and the second limiting arc surface are both located inside the first limiting arc surface.

3. The driving force receiving component according to claim 2, characterized in that: The upstream end of the second limiting block has a protrusion, and a portion of the second mating surface is formed on the protrusion.

4. The driving force receiving component according to claim 3, characterized in that: The first mating surface is a plane; The second mating surface is a surface group, which includes a plane and an arc surface.

5. The driving force receiving component according to claim 2, characterized in that: The top of the first limiting block is provided with a first guide surface, which gradually extends into the insertion position along the driving direction. The top of the second limiting block is provided with a second guide surface, which gradually extends into the insertion position along the driving direction.

6. The driving force receiving component according to any one of claims 1 to 5, characterized in that: The slot is provided with a third limiting block, and the second limiting block is located between the third limiting block and the bottom of the slot.

7. The driving force receiving component according to claim 6, characterized in that: The slot is also provided with a guide bar that extends along the depth direction of the slot; The second limiting block is provided with a guide groove, which extends along the depth direction, and the guide strip is slidably connected to the guide groove.

8. The driving force receiving component according to claim 7, characterized in that: The guide groove is provided with a first arc-shaped protrusion, and the arc surface of the first arc-shaped protrusion can contact the guide strip; Along the driving direction, the second limiting block is provided with a second arc-shaped protrusion at both ends, and the arc surface of the second arc-shaped protrusion contacts the first limiting block.

9. The driving force receiving component according to claim 6, characterized in that: The slot has a guide post extending along the depth direction of the slot, the elastic element is a compression spring, the compression spring is fitted on the guide post, the second limiting block has a clearance position, and the guide post and the compression spring extend into the clearance position; The guide post is in the shape of a stepped shaft, and the second limiting block is also provided with a through hole. The through hole penetrates the second limiting block in the depth direction and communicates with the clearance position. The small diameter shaft segment of the guide post can be inserted into the through hole.

10. A toner cartridge comprising a gear set, characterized by, The gear set includes a driving force receiving component as described in any one of claims 1 to 9.

Images