Quick-mounting blade cutter disc mechanism and grass cutter using same

Abstract

The application relates to the technical field of lawn mowers, in particular to a quick-assembly blade cutter disc mechanism and a lawn mower applying the same. The quick-assembly blade cutter disc mechanism comprises a cutter disc, at least one blade mounting area is arranged on the cutter disc, a chuck mounting sliding groove and a fixed column abutting surface are arranged on the blade mounting area; a chuck is arranged on the cutter disc, a sliding connection part which is detachably and slidably connected with the chuck mounting sliding groove is arranged on the chuck, and a blade fixing column is arranged on the lower surface of the chuck; a blade is arranged on the cutter disc, and a mounting through hole which can be sleeved on the outer periphery of the blade fixing column is arranged on the blade; when the chuck is connected on the blade mounting area of the cutter disc, the bottom of the blade fixing column abuts against the fixed column abutting surface. The technical problems that the existing lawn mower cutter disc is inconvenient to disassemble and replace and the time cost is high are solved, and the effective use area and use effect of the blade are improved.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, and more particularly to a quick-release blade disc mechanism and a lawnmower using the same. Background Technology

[0002] Because the blades on the lawnmower's blade disc need to be frequently disassembled and replaced, but the blades on the existing common lawnmower blade discs require special screwdriver tools to disassemble and install, which is not only very inconvenient, but also increases the time cost of blade disassembly and replacement. Utility Model Content

[0003] The purpose of this application is to provide a blade disc mechanism for tool-free blade removal and replacement, and a lawnmower using the same, to solve the technical problems of inconvenient blade removal and replacement and high time cost of existing lawnmower blade discs.

[0004] In a first aspect, this application provides a quick-release blade disc mechanism, comprising: A cutter head having at least one blade mounting area, wherein the blade mounting area has a chuck mounting groove and a fixing post abutment surface; A chuck, which has a sliding connection part that is detachably and slidably connected to the chuck mounting groove, and a blade fixing post protruding from the lower surface of the chuck; The blade has a mounting through hole that can be fitted onto the outer periphery of the blade fixing post; When the chuck is connected to the blade mounting area of ​​the cutter head, the bottom of the blade fixing post abuts against the fixing post abutting surface.

[0005] Furthermore, the chuck mounting groove includes a first mounting groove and a second mounting groove located on opposite sides of the blade mounting area, corresponding to... The chuck has a first slide plate and a second slide plate on opposite sides, which are slidably connected to the first mounting slide and the second mounting slide, respectively, and the first mounting slide and the second mounting slide extend along the length extension direction of the first slide plate and the second slide plate, respectively.

[0006] Furthermore, the blade mounting area includes a first side and a second side opposite to each other, as well as a third side and a fourth side opposite to each other. The first side is located at the edge of the cutter head, the second side is close to the center of the cutter head, and the third side and the fourth side are respectively provided with the first mounting groove and the second mounting groove.

[0007] Furthermore, the chuck includes a first connecting horizontal plate and a first sliding plate and a second sliding plate connected to opposite sides of the first connecting horizontal plate, and both the first sliding plate and the second sliding plate are arranged perpendicularly to the first connecting horizontal plate. The first connecting cross plate is provided with the blade fixing post.

[0008] Furthermore, a protective baffle is provided on the first connecting horizontal plate at the position corresponding to the top of the blade fixing post, and the width of the protective baffle is greater than the width of the blade; and / or When the chuck is in place, the distance from the blade fixing post to the first side of the blade mounting area is 0.2 to 0.8 times the length of the blade; and / or The distance from the blade fixing post to the first slide plate and / or the second slide plate is greater than the length of the blade.

[0009] Furthermore, the blade mounting area is provided with a fixing post groove extending along the sliding connection and movement direction of the chuck. The concave surface of the fixing post groove is the fixing post abutment surface. The first end of the fixing post groove extends through the second side and is open, while the other second end is a plug. When the chuck is connected in place, the bottom of the blade fixing post slides into the fixing post groove from the first end and is abutted by the first end; and / or The diameter of the blade fixing post is 1-2 mm smaller than the diameter of the mounting through hole of the blade, and the height of the blade fixing post protruding from the lower surface of the first connecting cross plate is 2-3 mm higher than the thickness of the blade.

[0010] Furthermore, the upper part of the inner end of the first and second mounting grooves near the second side is provided with a latch, namely a first latch and a second latch. The first latch and the second latch are respectively higher than the first groove plate and the second groove plate. Correspondingly, The first slide plate and the second slide plate are provided with slots that run vertically through the tail end and face the buckle opening from the side. These are the first slot and the second slot, respectively. The buckle can be engaged and disengaged from the slots.

[0011] Furthermore, the tail portions of the first and second sliding plates extend beyond the first and second mounting grooves respectively, and the tail portions are provided with upward-curving tail edges, namely the first tail edge and the second tail edge; and / or The first slide plate and the second slide plate have downwardly protruding semi-circular convex surfaces on their surfaces, namely the first semi-circular convex surface and the second semi-circular convex surface, respectively; and / or The extension length of the first mounting slide and the second mounting slide is 0.2 to 1 times the radius of the cutter head, and the extension length of the first slide plate and the second slide plate is 1 to 5 mm greater than the extension length of the first mounting slide and the second mounting slide, respectively.

[0012] Furthermore, the cutter head is provided with a plurality of blade mounting areas at intervals along its circumference, and each blade mounting area is set below the top surface of the cutter head, and the depth of the blade mounting area is greater than the height of the first slide plate and the second slide plate of the chuck.

[0013] Secondly, this application provides a lawnmower that includes the quick-release blade disc mechanism described in any of the preceding descriptions. The blade disc of the quick-release blade disc mechanism is mounted on the motor shaft of the lawnmower and is fixedly connected to the motor shaft flange.

[0014] Compared with the prior art, the quick-release blade disc mechanism and the lawnmower using the same provided in this application can be installed on the motor shaft of the lawnmower. The quick-release blade disc mechanism includes a disc, a chuck, and blades. The disc has at least one blade mounting area. The blade mounting area has a chuck mounting groove for mounting and connecting the chuck and a fixing post abutment surface for fixing the blade fixing post. The chuck has a sliding connection part that is detachably and slidably connected to the chuck mounting groove, and a blade fixing post protruding from its lower surface. The blade has a mounting through hole that can be fitted onto the outer periphery of the blade fixing post.

[0015] When installing the blade, the blade is first fitted onto the blade fixing post of the chuck through the mounting through hole. Then, the chuck is slidably fixed to the blade mounting area of ​​the cutter head through the sliding connection part. At the same time, the bottom of the blade fixing post abuts against the fixing post abutting surface of the blade mounting area, further securing the blade to prevent it from coming off the cutter head. When removing the blade, simply slide the chuck directly out of the chuck mounting groove on the cutter head through its sliding connection part.

[0016] On the one hand, the installation and removal of the blades require no tools, making the operation convenient and direct, and saving replacement time and costs. On the other hand, the quick-installation blade disc mechanism provided in this application only requires one mounting through hole for fixing the blade to the blade fixing post, eliminating the need for other structural holes and limiting structures for installation and removal. These functional structures that are specifically connected to the blade disc for installation and removal are completed by the mounting connection part on the chuck. The blade and the blade disc in this application are indirectly connected by the chuck. This design does not occupy too much of the blade's usable area, nor does it significantly affect the blade's functionality, simplifying the blade design, increasing the effective usable area of ​​the blade, and improving the performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a front structural diagram of the quick-release blade disc mechanism provided in the embodiments of this application; Figure 2 A perspective view of the quick-release blade disc mechanism provided in the embodiments of this application; Figure 3 This is a schematic diagram of the quick-release blade disc mechanism provided in the embodiments of this application; Figure 4 This is an exploded view of the quick-release blade disc mechanism provided in an embodiment of this application; Figure 5 This is a schematic diagram of the cutter head structure provided in an embodiment of this application; Figure 6 for Figure 5 A schematic diagram of the axial section; Figure 7 This is a schematic diagram of the front structure of the chuck provided in an embodiment of this application; Figure 8 This is a side view of the chuck provided in an embodiment of this application; Figure 9 This is a schematic diagram of the other side of the chuck provided in an embodiment of this application.

[0019] Figure label: 100-Quick-install blade disc mechanism; 10-Cutterhead; 11- Blade mounting area; 111 - First mounting groove; 1111 - First buckle; 112 - Second mounting groove; 113 - Fixed column groove; 1131 - First end; 1132 - Second end; 1133 - Fixed column contact surface; 1141 - First side; 1142 - Second side; 1143 - Third side; 1144 - Fourth side; 12-Top surface of the plate; 13-Mounting surface; 131 - First mounting hole; 132 - Second mounting hole; 20-Chuck; 21-First slide plate; 211 - First card slot; 212 - First tail edge; 213 - First semi-circular convex surface; 22-Second slide plate; 221 - Second card slot; 222 - Second tail edge; 223 - Second semi-circular convex surface; 23-First connecting horizontal plate; 231-Blade fixing post; 232-Protective baffle; 30-blade; 31 - Mounting through hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] like Figures 1 to 9 As shown, this application embodiment provides a quick-release blade disc mechanism 100 and a lawnmower using the quick-release blade disc mechanism 100. Specifically, the disc 10 of the quick-release blade disc mechanism 100 can be installed on the motor shaft of the lawnmower and fixed by a flange.

[0028] like Figures 1 to 9 As shown, the quick-release blade disc mechanism 100 provided in this application embodiment includes a blade disc 10, a chuck 20, and a blade 30. The blade disc 10 is provided with at least one blade mounting area 11, which is used to mount the chuck 20 and the blade 30. The blade mounting area 11 is provided with a chuck mounting groove for mounting and connecting the chuck 20 and a fixing post abutment surface 1133 for fixing the blade fixing post 231.

[0029] The chuck 20 is provided with a sliding connection part that is detachably and slidably connected to the chuck mounting groove, and a blade fixing post 231 protruding from its lower surface for limiting the mounting of the blade 30. The blade 30 is provided with a mounting through hole 31, which can be fitted onto the outer periphery of the blade fixing post 231.

[0030] When the chuck 20 is slidably fixed to the blade mounting area 11 of the cutter head 10, the bottom of the blade fixing post 231 abuts against the fixing post abutting surface 1133 on the blade mounting area 11, thereby further effectively preventing the blade 30 from coming out.

[0031] With this configuration, when the blade 30 is installed, it can first be fitted onto the blade fixing post 231 of the chuck 20 through the mounting through hole 31. Then, the chuck 20 is slidably fixed to the blade mounting area 11 of the cutter head 10 through the sliding connection part provided thereon. At the same time, the bottom of the blade fixing post 231 abuts against the fixing post abutment surface 1133 of the blade mounting area 11, further fixing the blade 30 so that it does not fall out of the cutter head 10.

[0032] When disassembling the blade 30, simply slide the chuck 20 directly out of the chuck mounting groove on the cutter head 10 through its sliding connection.

[0033] Compared with the prior art, the quick-install blade disc mechanism 100 provided in this application embodiment has the following advantages: First, the installation and disassembly of the blade 30 do not require tool assistance, making the operation convenient and direct, and saving replacement time and costs. Second, the quick-install blade disc mechanism 100 provided in this application embodiment only requires one mounting through hole 31 for limiting and fixing with the blade fixing post 231. There is no need to set other structural holes and limiting structures for installation and disassembly. These functional structural parts that are specifically connected to the disc 10 for installation and disassembly are completed by the mounting connection part on the chuck 20. The blade 30 and the disc 10 are indirectly installed and connected through the chuck 20. This setting will not occupy too much of the usable area of ​​the blade 30, nor will it affect the function of the blade 30 too much. It simplifies the design of the blade 30, increases the effective usable area of ​​the blade 30, and improves the use effect.

[0034] Furthermore, one or more blade mounting areas 11 can be provided, and multiple blade mounting areas 11 can be sequentially arranged along the circumference of the cutter head 10. Simultaneously, such as... Figure 5As shown, the mounting surface 13 of the cutter head 10 can be located in the middle, and the mounting areas 11 of each blade can be arranged around the outer periphery of the mounting surface 13. The mounting surface 13 can be centrally provided with a first mounting hole 131 for drive connection with the motor shaft of the lawnmower. At the same time, the mounting surface 13 can also be provided with at least one second mounting hole 132 for connection with the flange, which can be arranged around the first mounting hole 131 to improve the uniformity of connection force.

[0035] An alternative embodiment is, as follows: Figure 3 and Figure 4 As shown, the aforementioned chuck mounting groove may specifically include a first mounting groove 111 and a second mounting groove 112 located on opposite sides of the aforementioned blade mounting area 11. Correspondingly, the aforementioned chuck 20 may have a first slide plate 21 and a second slide plate 22 respectively provided on opposite sides, which are slidably connected to the first mounting groove 111 and the second mounting groove 112. The first mounting groove 111 and the second mounting groove 112 extend along the length extension direction of the first slide plate 21 and the second slide plate 22, respectively. Specifically, the chuck 20 and the blade mounting area 11 are slidably connected and fixed by the sliding connection of the grooves and slide plates, which facilitates sliding in and out, is convenient to operate, and has strong connection reliability.

[0036] Based on the foregoing embodiments, a specific embodiment is as follows: Figure 5 As shown, the blade mounting area 11 may specifically include opposing first side 1141 and second side 1142, as well as opposing third side 1143 and fourth side 1144. The first side 1141 is located at the edge of the cutter head 10, the second side 1142 is close to the center of the cutter head 10, and the third side 1143 and fourth side 1144 are respectively provided with the aforementioned first mounting groove 111 and second mounting groove 112. In this way, the chuck 20 can slide in and out from the first side 1141 or the second side 1142. Furthermore, the blade 30 can also rotate about the blade fixing post 231 as a rotation axis and be unscrewed from the edge of the cutter head 10 for use.

[0037] Preferably, the first mounting slide 111 and the second mounting slide 112 are arranged in parallel. Correspondingly, the aforementioned first slide plate 21 and second slide plate 22 are arranged in parallel with each other. This makes it easier to control the sliding angle and reduces the likelihood of errors. Of course, an angle setting is also possible, as long as the first mounting slide 111 and the first slide plate 21 extend in the same direction, and the second mounting slide 112 and the second slide plate 22 extend in the same direction.

[0038] like Figures 7 to 9As shown, in a specific embodiment, the chuck 20 may include a first connecting horizontal plate 23 and a first sliding plate 21 and a second sliding plate 22 connected to opposite sides of the first connecting horizontal plate 23. Preferably, both the first sliding plate 21 and the second sliding plate 22 are perpendicular to the first connecting horizontal plate 23. The first connecting horizontal plate 23 is provided with the aforementioned blade fixing post 231, and preferably, the blade fixing post 231 is connected to the middle of the first connecting horizontal plate 23. This configuration facilitates sliding connection of the chuck 20, allows for quick installation and disassembly, improves the convenience of blade replacement, and saves time and costs.

[0039] Furthermore, an alternative embodiment is, as follows: Figures 1 to 3 , Figures 7 to 9 As shown, a protective baffle 232 may be provided on the first connecting horizontal plate 23 at the position corresponding to the top of the blade fixing post 231. The width of the protective baffle 232 is greater than the width of the blade 30, so that when the blade 30 is installed on the blade fixing post 231 of the chuck 20, the protective baffle 232 can block the blade 30 and prevent it from getting tangled in grass.

[0040] In one optional embodiment, when the chuck 20 is installed in place, preferably the distance from the blade fixing post 231 to the first side 1141 of the blade mounting area 11 is 0.2 to 0.8 times the length of the blade 30, thereby ensuring that the blade 30 can be unscrewed from the cutter head 10. Furthermore, as... Figure 3 and Figure 4 As shown, the mounting hole 31 of the preferred blade 30 is opened at its tail, that is, on the side away from its blade edge, so that when it is screwed out, more of the sharp surface of the blade 30 is exposed, thus improving its functional performance.

[0041] To ensure that the blade 30 can rotate smoothly within the chuck 20 after it is installed, it is preferable that the distance from the blade fixing post 231 to the first slide plate 21 or the second slide plate 22 is greater than the length of the blade 30, so that the blade 30 can rotate in and out from at least one side. Alternatively, it is preferable that the blade fixing post 231 is located near the middle of the first connecting cross plate 23, and that the distance from the blade fixing post 231 to both the first slide plate 21 and the second slide plate 22 is greater than the length of the blade 30, so that the blade 30 can rotate in and out from both sides of the blade fixing post 231. Specifically, the width of the first connecting cross plate 23 can be 1 to 2 times the length of the blade 30 to ensure that the blade 30 can rotate smoothly within the chuck 20.

[0042] Preferably, the diameter of the blade fixing post 231 is 1-2 mm smaller than the diameter of the mounting through hole 31 of the blade 30, so that the blade fixing post 231 can be inserted into the mounting through hole 31 while maintaining a certain gap between them, allowing the blade 30 to be fitted onto the blade fixing post 231 and rotate around it. Preferably, the outer surface of the blade fixing post 231 is smooth to facilitate the rotation of the blade 30. More preferably, the height of the blade fixing post 231 protruding from the lower surface of the first connecting cross plate 23 is 2-3 mm higher than the thickness of the blade 30, to facilitate the screwing in and out of the blade 30.

[0043] like Figure 5 As shown, in a specific embodiment, the blade mounting area 11 of the aforementioned cutter head 10 may be provided with a fixing post groove 113 extending along the sliding connection moving direction of the chuck 20 (that is, the moving direction of its blade fixing post 231 when the chuck 20 slides in and out). Specifically, the concave surface of the fixing post groove 113 can be the aforementioned fixing post abutment surface 1133.

[0044] Specifically, the two opposite ends of the fixing post groove 113 are a first end 1131 and a second end 1132, respectively. The first end 1131 extends directly to the second side 1142 near the center of the cutter head 10 and has an opening. The chuck 20 can slide in from this side. Specifically, the blade fixing post 231 can slide in from the first end 1131 of the opening. Preferably, the second end 1132 of the fixing post groove 113 is set as a plug to seal the blade. When the chuck 20 slides in and is connected, the bottom of the blade fixing post 231 slides into the fixing post groove 113 from the first end 1131 and is held in place by the first end 1131 of the plug, so as to further ensure the connection and limit stability and further ensure that the blade 30 will not fall out of the cutter head 10 when the blade fixing post 231 is inserted into the cutter head 10.

[0045] More preferably, the width of the aforementioned fixing post groove 113 is 0.5~1mm greater than the diameter of the blade fixing post 231, and preferably the depth of the fixing post groove 113 is 1~2mm, so as to further ensure that the blade 30 will not fall out of the blade disc 10 when the blade fixing post 231 is inserted into the blade disc 10.

[0046] In another preferred embodiment, the extension length of the first mounting slide 111 and the second mounting slide 112 is 0.2 to 1 times the radius of the cutter head 10, which facilitates reasonable setting; preferably, the extension length of the first slide plate 21 and the second slide plate 22 can be 1 to 5 mm longer than the extension length of the first mounting slide 111 and the second mounting slide 112, that is, the slide plate is longer than the slide, so that the tail of the slide plate protrudes a little, which facilitates pressing and pulling operations and facilitates disassembly; it is also preferred that the width of the slide plate (i.e., the first slide plate 21 and the second slide plate 22) can be 3 to 5 mm.

[0047] One specific embodiment, such as Figures 5 to 7 As shown, both the first mounting groove 111 and the second mounting groove 112 have a latch at the upper part of the end near the second side 1142, which can be the first latch 1111 (e.g., Figure 6 (As shown in the figure) and a second buckle (not shown in the figure), the first buckle 1111 is set higher than the first slide plate 21, and the second buckle is set higher than the second slide plate 22; correspondingly, the first slide plate 21 and the second slide plate 22 are provided with slots that extend vertically through the first slide plate 21 and face the buckle opening from the side, which can be the first slot 211 and the second slot 221, respectively. Figure 7 As shown, the buckle can engage and disengage from the slot. Specifically, the slot can be a semi-open square slot, preferably with the width of the slot equal to the width of the buckle and the length equal to the length of the buckle.

[0048] Furthermore, the tails of the first sliding plate 21 and the second sliding plate 22 can extend out of the first mounting groove 111 and the second mounting groove 112, respectively, and preferably, the tails can be provided with upward-curving tail edges, which can be the first tail edge 212 and the second tail edge 222, respectively. Figure 9 As shown. Specifically, the tail edge can be set 1~2mm higher than the cutter head, and preferably the distance between the first slot 211 and the first tail edge 212 can be 2~3mm, and the distance between the second slot 221 and the second tail edge 222 can be 2~3mm.

[0049] With this design, when the chuck 20 is installed, the aforementioned latches engage with the corresponding slots. To remove the chuck 20, press down on the tail edge (such as the first tail edge 212 and the second tail edge 222), and the slot will disengage from the latches, allowing it to slide out. The latches and slots provide a more secure connection, while the tail edge design makes the chuck 20 easier to remove.

[0050] Furthermore, such as Figure 7 and Figure 9 As shown, the surfaces of the aforementioned first slide plate 21 and second slide plate 22 may also have downwardly protruding semi-circular convex surfaces, which can be the first semi-circular convex surface 213 and the second semi-circular convex surface 223, respectively. This arrangement can increase damping, increase thickness space, increase elasticity, and increase fixing strength.

[0051] A preferred embodiment is, as follows: Figure 2As shown, the cutter head 10 has multiple blade mounting areas 11 spaced apart along its circumference, and each of these spaces can be the top surface 12 of the head. Preferably, each blade mounting area 11 is set lower than the top surface 12 of the head, and the depth of each blade mounting area 11 is 1-5mm greater than the height of the first slide plate 21 and the second slide plate 22 of the chuck 20. This further ensures that when the slide plate is inserted into the slide, the entire chuck 20 and the blade 30 are located within the recessed blade mounting area 11. The recessed blade mounting area 11 and the chuck 20 can surround the blade 30, reducing the contact between the blade 30 and the broken grass, and effectively preventing grass entanglement.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A quick-install blade disc mechanism, characterized in that, include: The cutter head (10) has at least one blade mounting area (11) thereon, and the blade mounting area (11) has a chuck mounting groove and a fixing post abutment surface (1133). The chuck (20) is provided with a sliding connection part that is detachably and slidably connected to the chuck mounting groove, and a blade fixing post (231) protruding from the lower surface of the chuck (20). The blade (30) has a mounting through hole (31) that can be fitted onto the outer periphery of the blade fixing post (231). When the chuck (20) is connected to the blade mounting area (11) of the cutter head (10), the bottom of the blade fixing post (231) abuts against the fixing post abutting surface (1133).

2. The quick-release blade disc mechanism according to claim 1, characterized in that, The chuck mounting groove includes a first mounting groove (111) and a second mounting groove (112) located on opposite sides of the blade mounting area (11), corresponding to... The chuck (20) has a first slide plate (21) and a second slide plate (22) on opposite sides, which are slidably connected to the first mounting slide (111) and the second mounting slide (112), respectively. The first mounting slide (111) and the second mounting slide (112) extend along the length extension direction of the first slide plate (21) and the second slide plate (22), respectively.

3. The quick-release blade disc mechanism according to claim 2, characterized in that, The blade mounting area (11) includes a first side (1141) and a second side (1142) opposite to each other, as well as a third side (1143) and a fourth side (1144) opposite to each other. The first side (1141) is located at the edge of the cutter head (10), and the second side (1142) is close to the center of the cutter head (10). The third side (1143) and the fourth side (1144) are respectively provided with the first mounting groove (111) and the second mounting groove (112).

4. The quick-release blade disc mechanism according to claim 3, characterized in that, The chuck (20) includes a first connecting horizontal plate (23) and a first sliding plate (21) and a second sliding plate (22) connected to opposite sides of the first connecting horizontal plate (23), and the first sliding plate (21) and the second sliding plate (22) are both arranged perpendicularly to the first connecting horizontal plate (23); The first connecting horizontal plate (23) is provided with the blade fixing post (231).

5. The quick-release blade disc mechanism according to claim 4, characterized in that, A protective baffle (232) is provided on the first connecting horizontal plate (23) at the position where it connects with the top of the blade fixing post (231). The width of the protective baffle (232) is greater than the width of the blade (30); and / or When the chuck (20) is installed in place, the distance from the blade fixing post (231) to the first side (1141) of the blade mounting area (11) is 0.2 to 0.8 times the length of the blade (30); and / or The distance from the blade fixing post (231) to the first slide plate (21) and / or the second slide plate (22) is greater than the length of the blade (30).

6. The quick-release blade disc mechanism according to claim 4, characterized in that, The blade mounting area (11) is provided with a fixing post groove (113) extending along the sliding connection movement direction of the chuck (20). The concave surface of the fixing post groove (113) is the fixing post abutment surface (1133). The first end (1131) of the fixing post groove (113) is open and extends through the second side (1142), while the other second end (1132) is a plug. When the chuck (20) is connected in place, the bottom of the blade fixing post (231) slides into the fixing post groove (113) from the first end (1131) and is abutted by the first end (1131); and / or The diameter of the blade fixing post (231) is 1-2 mm smaller than the diameter of the mounting through hole (31) of the blade (30), and the height of the blade fixing post (231) protruding from the lower surface of the first connecting cross plate (23) is 2-3 mm higher than the thickness of the blade (30).

7. The quick-release blade disc mechanism according to any one of claims 3 to 6, characterized in that, The upper part of the interior of the first mounting groove (111) and the second mounting groove (112) near the end of the second side (1142) is provided with a buckle, namely a first buckle (1111) and a second buckle. The first buckle (1111) and the second buckle are respectively higher than the first groove plate (21) and the second groove plate (22). Correspondingly, The first slide plate (21) and the second slide plate (22) are provided with slots that run vertically through the tail end and face the buckle opening, namely the first slot (211) and the second slot (221), and the buckle can be engaged and disengaged from the slots.

8. The quick-release blade disc mechanism according to claim 7, characterized in that, The tail portions of the first sliding plate (21) and the second sliding plate (22) extend out of the first mounting groove (111) and the second mounting groove (112) respectively, and the tail portions are provided with upward-curving tail edges, namely the first tail edge (212) and the second tail edge (222); and / or The first slide plate (21) and the second slide plate (22) have downwardly protruding semi-circular convex surfaces, namely a first semi-circular convex surface (213) and a second semi-circular convex surface (223); and / or The extension length of the first mounting groove (111) and the second mounting groove (112) is 0.2 to 1 times the radius of the cutter head (10), and the extension length of the first groove plate (21) and the second groove plate (22) is 1 to 5 mm longer than the extension length of the first mounting groove (111) and the second mounting groove (112).

9. The quick-release blade disc mechanism according to claim 2, characterized in that, The cutter head (10) is provided with a plurality of blade mounting areas (11) spaced apart along its circumference, and each blade mounting area (11) is set below the top surface (12) of the cutter head (10). The depth of the blade mounting area (11) is greater than the height of the first slide plate (21) and the second slide plate (22) of the chuck (20).

10. A lawnmower, characterized in that, The invention includes a quick-release blade disc mechanism (100) according to any one of claims 1 to 9, wherein the disc (10) of the quick-release blade disc mechanism (100) is mounted on the motor shaft of the lawnmower and is fixedly connected to the motor shaft flange.

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