Cutting disc assembly and robotic lawn mower

Abstract

The present application provides a cutting disc assembly and a robotic lawn mower. The cutting disc assembly comprises a main body, a mounting member, a clamping member, and an unlocking member; the mounting member is used for mounting a blade, and the mounting member is movably arranged on the main body; the clamping member is arranged on the main body, the clamping member comprises two clamping arms, and the two clamping arms clamp the mounting member to lock the mounting member on the main body; and the unlocking member enables the two clamping arms to release the mounting member under the action of an external force. The cutting disc assembly of the present application can enable relatively quick blade replacement.

Description

A blade assembly and a lawn mowing robot

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese patent applications No. 202510105494.8 and 202520155331.6, both filed on January 22, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of lawn mowing robot technology, and in particular to a blade assembly and a lawn mowing robot. Background Technology

[0004] In related technologies, lawnmower robots typically use blades to trim lawns or vegetation. Blades have a limited lifespan; when their cutting effectiveness decreases or they become damaged, they need to be replaced. However, in these technologies, the blade installation method is relatively complex, and the blade replacement process is also complicated and time-consuming. Summary of the Invention

[0005] In view of this, the embodiments of this application aim to provide a blade assembly and a lawnmower robot that can replace blades relatively quickly.

[0006] To achieve the above objectives, one embodiment of this application provides a cutter head assembly, including:

[0007] main body;

[0008] A mounting component for mounting a blade, the mounting component being movably disposed on the body;

[0009] A clamping member disposed on the main body, the clamping member including two clamping arms, the two clamping arms clamping the mounting member to lock the mounting member to the main body;

[0010] An unlocking component that, under the action of an external force, causes the two clamping arms to release the mounting component.

[0011] In one embodiment, the clamping arm includes two clamping sections and two unlocking sections arranged opposite to each other. The two clamping sections clamp the mounting member, and a portion of the unlocking member extends between the two unlocking sections under external force. By abutting against the two unlocking sections, the two clamping sections are moved away from each other to release the mounting member.

[0012] In one embodiment, the distance between the two clamping segments is greater than the distance between the two unlocking segments.

[0013] In one embodiment, the unlocking member includes a pressing portion and a first pushing portion facing the clamping member. The outer dimensions of the first pushing portion gradually decrease from the end of the first pushing portion away from the clamping member to the end closer to the clamping member. Under the action of external force, the pressing portion drives the first pushing portion to extend between the two unlocking segments and abut against the two unlocking segments.

[0014] In one embodiment, the main body has a first clearance space located on the side of the two unlocking segments opposite to the unlocking member, to avoid the first pushing portion extending between the two unlocking segments; and / or,

[0015] The unlocking member includes a second pushing portion toward the mounting member. During the process of the clamping member releasing the mounting member, the second pushing portion applies a pushing force to the mounting member, causing the mounting member to move away from the clamping member, thereby disengaging from the clamping member.

[0016] In one embodiment, the main body has a fixing part, and the clamping member further includes a fixing section;

[0017] The two opposite ends of the fixing segment are respectively connected to the two clamping arms, and the fixing segment is sleeved on the fixing part; and / or,

[0018] The clamping member further includes two opening segments arranged opposite to each other. The two opening segments are located at the ends of the two clamping arms opposite to the fixed segment, and the ends of the two opening segments away from the fixed segment are spaced apart to form openings.

[0019] In one embodiment, the body has a clearance hole to avoid the mounting member, through which the mounting member, released by the two clamping arms, disengages from the body; and / or,

[0020] The outer wall of the mounting component has a mounting groove, and the two clamping arms clamp the mounting component by engaging with the mounting groove.

[0021] In one embodiment, the mounting member has a third pushing portion facing the clamping arm, and the outer dimensions of the third pushing portion gradually decrease from one end away from the clamping arm to one end close to the clamping arm; the third pushing portion extends between the two clamping arms under the action of external force, and by abutting against the two clamping arms, the two clamping arms clamp the mounting member by moving away from each other.

[0022] In one embodiment, the main body has a mounting hole, the mounting member passes through the mounting hole, and the clamping member is located on one side of the mounting hole along the through direction.

[0023] In one embodiment, the mounting component includes a first segment, a second segment, and a third segment connected in sequence. The second segment is located in the mounting hole, and the first segment and the second segment are located on opposite sides of the mounting hole. The first segment is held by two clamping arms, and the third segment is used to mount the blade.

[0024] In one embodiment, the third segment abuts against the area of ​​the body located around the mounting hole.

[0025] In one embodiment, the main body includes a cutter head and a cover plate disposed on one side of the cutter head, the clamping member is disposed between the cover plate and the cutter head, the unlocking member is disposed on the cover plate, and the mounting member is movably disposed on the cutter head.

[0026] In one embodiment, the main body includes a limiting block disposed on at least one of the cover plate and the cutter head, the limiting block being located between the cover plate and the cutter head and facing the clamping member; and / or,

[0027] The cover plate has a second clearance space to avoid the unlocking member and a spring arm disposed in the second clearance space, the spring arm being connected to the unlocking member.

[0028] Another embodiment of this application provides a lawnmower robot, including blades and the aforementioned blade disc structure, wherein the blades are detachably connected to the mounting component.

[0029] In one embodiment, the mounting member passes through the blade to rotatably connect the blade to the mounting member.

[0030] This application provides a blade assembly and a lawnmower robot. The blade assembly includes a mounting member for attaching blades. The mounting member is locked to the main body by two clamping arms of a clamping member. When blade replacement is needed, the user applies force to an unlocking member, causing the two clamping arms to release the mounting member. This allows the blade to be removed from the mounting member by moving it relative to the main body. Therefore, the blade assembly 10 of this application enables relatively quick blade replacement. Attached Figure Description

[0031] Figure 1 is a cross-sectional view of a lawnmower robot according to an embodiment of this application;

[0032] Figure 2 is a cross-sectional view of the lawnmower robot shown in Figure 1 from another angle;

[0033] Figure 3 is a schematic diagram of the structure of the lawnmower robot shown in Figure 1. The clamping component in the figure is in the state of clamping the mounting component.

[0034] Figure 4 is a structural schematic diagram of the lawnmower robot shown in Figure 1, with the clamping component in the figure in the state of releasing the mounting component;

[0035] Figure 5 is a schematic diagram of the cutter head shown in Figure 1;

[0036] Figure 6 is a partial structural schematic diagram of the cutter head shown in Figure 5;

[0037] Figure 7 is a structural schematic diagram of the cover plate and unlocking component shown in Figure 1;

[0038] Figure 8 is a structural schematic diagram of the cover plate and unlocking component shown in Figure 7 from another angle;

[0039] Figure 9 is a schematic diagram of the clamping component shown in Figure 1;

[0040] Figure 10 is a structural schematic diagram of the mounting component shown in Figure 1. Detailed Implementation

[0041] This application provides a lawn mowing robot, which includes a blade assembly 10 and blades 20.

[0042] Please refer to Figures 1 to 10. The cutter head assembly 10 of this application embodiment includes a main body 11, a mounting member 12, a clamping member 13, and an unlocking member 14.

[0043] Mounting member 12 is used to mount the blade 20, and mounting member 12 is movably disposed on the main body 11.

[0044] The main body 11 is used to connect to the drive source. The main body 11 rotates under the drive source so that the blade 20 can cut grass.

[0045] Mounting member 12 is used to mount blade 20 onto body 11. Blade 20 can be movably connected to mounting member 12, that is, when body 11 rotates, blade 20 rotates relative to mounting member 12. In another embodiment, blade 20 can also be fixedly connected to mounting member 12, that is, there is no relative rotation between blade 20 and mounting member 12.

[0046] The blade 20 is disposed on the mounting member 12 in any way. For example, the mounting member 12 passes through the blade 20 so that the blade 20 is rotatably connected to the mounting member 12.

[0047] Mounting member 12 moves relative to body 11 to detach or install blade 20. Mounting member 12 may be detachably connected to body 11 or inseparably connected to body 11. That is, mounting member 12 may be removed from body 11 to detach or install blade 20, or mounting member 12 may be moved only relative to body 11 to detach or install blade 20 (i.e., during the removal or installation of blade 20, mounting member 12 remains on body 11 and is not removed from body 11).

[0048] Please refer to Figures 1 to 4. The clamping member 13 is disposed on the main body 11. The clamping member 13 includes two clamping arms 131. The two clamping arms 131 clamp the mounting member 12, thereby locking the mounting member 12 to the main body 11. The unlocking member 14 releases the mounting member 12 under the action of external force by the two clamping arms 131.

[0049] The clamping member 13 is used to lock the mounting member 12 to the body 11. The unlocking member 14 is used for the user to apply external force to release the mounting member 12 by the clamping member 13.

[0050] By way of example, the clamping member 13 can be an elastic member. Under the action of an external force, the unlocking member 14 can cause the clamping member 13 to elastically deform, thereby causing the two clamping arms 131 to move away from each other and release the mounting member 12. After the two clamping arms 131 release the mounting member 12, the mounting member 12 can move relative to the body 11 to replace the blade 20. In another embodiment, the clamping member 13 can also be a non-elastic member.

[0051] The clamping member 13 clamps the mounting member 12 in any way. For example, please refer to Figures 1, 3 and 10. The outer wall of the mounting member 12 may have a mounting groove 12a. The two clamping arms 131 clamp the mounting member 12 by snapping into the mounting groove 12a.

[0052] The mounting slot 12a can limit the displacement of the clamping member 13 to ensure the stability of the clamping member 13 when clamping the mounting member 12.

[0053] The way the clamping member 13 is disposed on the main body 11 is not limited. For example, please refer to Figures 3 to 6 and Figure 9. The main body 11 may have a fixing part 111. The clamping member 13 also includes a fixing section 132. The two opposite ends of the fixing section 132 are respectively connected to two clamping arms 131. The fixing section 132 is sleeved on the fixing part 111.

[0054] The fixing part 111 is used to fix the clamping member 13, which can increase the stability of the clamping member 13 when clamping the mounting member 12, and prevent the clamping member 13 from falling off the main body 11.

[0055] More preferably, the fixing section 132 and the fixing part 111 can be an interference fit.

[0056] Referring to Figures 3, 4, and 9, the clamping member 13 may further include two opposing open sections 133. The two open sections 133 are located at the ends of the two clamping arms 131 opposite to the fixed section 132, and are spaced apart at the ends of the two open sections 133 away from the fixed section 132 to form an opening 133a. By providing the opening 133a, it is easier for the fixed section 132 to be fitted onto the fixed part 111, and it also achieves a labor-saving effect, making it convenient for the user.

[0057] The cutter head assembly 10 of this application embodiment is provided with a mounting member 12 for mounting the blade 20. The mounting member 12 is locked to the main body 11 by clamping the two clamping arms 131 of the clamping member 13. When it is necessary to replace the blade 20, the user applies force to the unlocking member 14 to release the two clamping arms 131, thereby allowing the blade 20 to be removed from the mounting member 12 by moving it relative to the main body 11. Therefore, the cutter head assembly 10 of this application embodiment can achieve relatively quick blade 20 replacement.

[0058] In one embodiment, referring to FIG9, the clamping arm 131 may include two clamping sections 1311 and two unlocking sections 1312 arranged opposite to each other. The two clamping sections 1311 clamp the mounting member 12. A portion of the structure of the unlocking member 14 extends between the two unlocking sections 1312 under the action of external force, and by abutting against the two unlocking sections 1312, the two clamping sections 1311 are moved away from each other to release the mounting member 12.

[0059] The clamping section 1311 is used to clamp the mounting member 12. The unlocking section 1312 is used to cooperate with the unlocking member 14 to release the mounting member 12 by the two clamping sections 1311.

[0060] When the unlocking member 14 extends between the two unlocking segments 1312 and spreads the two unlocking segments 1312 apart, that is, by extending between the two unlocking segments 1312, the unlocking member 14 increases the distance between the two clamping segments 1311 as the two unlocking segments 1312 increase, thereby releasing the mounting member 12.

[0061] For example, referring to Figure 9, the distance between the two clamping segments 1311 can be greater than the distance between the two unlocking segments 1312, so that when a portion of the structure of the unlocking member 14 extends into the two unlocking segments 1312, the expandable distance between the two clamping segments 1311 increases, thereby improving the ease of releasing the mounting member 12.

[0062] In one embodiment, referring to Figures 2, 7 and 9, the unlocking member 14 may include a pressing part 141 and a first pushing part 142 toward the clamping member 13. From the end of the first pushing part 142 away from the clamping member 13 to the end closer to the clamping member 13, the outer dimensions of the first pushing part 142 gradually decrease, so that the first pushing part 142 can easily extend between the two unlocking sections 1312.

[0063] The pressing part 141 is used for the user to apply external force. Under the action of external force, the pressing part 141 drives the first pushing part 142 to extend between the two unlocking sections 1312 and abut against the two unlocking sections 1312. That is, under the action of external force, the first pushing part 142 slides relative to the two unlocking sections 1312, so that the area where the first pushing part 142 abuts against the two unlocking sections 1312 gradually slides from the end near the clamping member 13 to the end away from the clamping member 13. As the outer dimensions of the first pushing part 142 gradually decrease, the distance between the two unlocking sections 1312 can gradually increase, thereby moving the two clamping sections 1311 away from each other and away from the release mounting member 12.

[0064] The shape of the first pushing part 142 is not limited. For example, please refer to FIG8. The first pushing part 142 has a first pushing surface 142a and a second pushing surface 142b that are disposed opposite to each other. From the end of the first pushing part 142 away from the clamping member 13 to the end near the clamping member 13, the first pushing surface 142a and the second pushing surface 142b are inclined in a direction that approaches each other. During the process of the first pushing part 142 extending into the two unlocking sections 1312, the first pushing surface 142a and the second pushing surface 142b respectively abut against the unlocking section 1312, and the first pushing surface 142a and the second pushing surface 142b slide relative to the corresponding unlocking section 1312.

[0065] In another embodiment, the first pushing portion 142 may also be frustum-shaped or conical.

[0066] For example, please refer to Figures 2 to 4 and Figure 6. The main body 11 may have a first clearance space 11a, which is located on the side of the two unlocking segments 1312 away from the unlocking member 14, so as to avoid the first pushing part 142 extending between the two unlocking segments 1312.

[0067] The first clearance space 11a is used to avoid the first jacking part 142.

[0068] When the first pushing part 142 is subjected to external force, the end of the first pushing part 142 away from the pressing part 141 extends into the first clearance space 11a, so that the area where the first pushing part 142 abuts against the two unlocking sections 1312 gradually slides from the end away from the pressing part 141 to the end close to the pressing part 141. This can maximize the distance between the two unlocking sections 1312, so that the various clamping sections 1311 of the chain are far away from each other from the release mounting member 12.

[0069] For example, referring to Figures 1, 2, 7 and 8, the unlocking member 14 may include a second pushing portion 143 toward the mounting member 12. During the process of the clamping member 13 releasing the mounting member 12, the second pushing portion 143 applies a pushing force to the mounting member 12, causing the mounting member 12 to move away from the clamping member 13, so as to disengage from the clamping member 13.

[0070] The second jacking part 143 is used for jacking the mounting part 12.

[0071] During the process of the pressing part 141 driving the first pushing part 142 to extend between the two unlocking sections 1312 under the action of external force, the second pushing part 143 can abut against the mounting part 12 to push the mounting part 12 away from the clamping part 13 so as to perform the disassembly and assembly of the blade 20, thereby improving the speed of blade disassembly and assembly.

[0072] In one embodiment, referring to Figures 1 and 10, the mounting member 12 may have a third pushing portion 121 facing the clamping arm 131. From the end of the third pushing portion 121 away from the clamping arm 131 to the end near the clamping arm 131, the outer dimensions of the pushing portion gradually decrease. Under the action of external force, the third pushing portion 121 extends between the two clamping arms 131 and abuts against the two clamping arms 131, causing the two clamping arms 131 to move away from each other so that a portion of the mounting member 12 enters between the two clamping arms 131.

[0073] The third pushing part 121 is used to push the two clamping arms 131, so that the two clamping arms 131 are far apart from each other.

[0074] Under the action of external force, the third pushing part 121 slides relative to the two clamping arms 131, so that the area where the third pushing part 121 abuts against the two clamping arms 131 gradually slides from the end near the clamping member 13 to the end away from the clamping member 13. As the outer dimensions of the third pushing part 121 gradually decrease, the distance between the two clamping arms 131 can gradually increase, so that a part of the mounting member 12 can easily enter between the two clamping arms 131, thereby realizing that the clamping arms 131 clamp the mounting member 12 and fix the mounting member 12 to the main body 11.

[0075] In one embodiment, referring to Figures 1, 2, and 5, the main body 11 may have a clearance hole 11b for the mounting member 12, through which the mounting member 12, released by the two clamping arms 131, detaches from the main body 11. That is, the mounting member 12 can be removed from the main body 11 through the clearance hole 11b, thereby facilitating replacement of the mounting member 12.

[0076] In one embodiment, referring to Figures 1 to 6, the main body 11 may have a mounting hole 11c, the mounting member 12 passes through the mounting hole 11c, and the clamping member 13 is located on one side of the mounting hole 11c along the through direction. That is, the clamping member 13 clamps the part of the mounting member 12 located outside the mounting hole 11c, so that the mounting member 12 is mounted in the mounting hole 11c.

[0077] Please refer to Figures 1 and 10. The mounting member 12 may include a first segment 122, a second segment 123 and a third segment 124 connected in sequence. The second segment 123 is located in the mounting hole 11c. The first segment 122 and the second segment 123 are located on opposite sides of the mounting hole 11c. Two clamping arms 131 clamp the first segment 122. The third segment 124 is used to mount the blade 20. That is, the clamping member 13 and the blade 20 are located on opposite sides of the mounting hole 11c along the through direction.

[0078] For example, the third segment 124 can abut against the area of ​​the body 11 located on the periphery of the mounting hole 11c. That is, the radial dimension of the third segment 124 is larger than the radial dimension of the second segment 123. For example, referring to Figures 1 and 10, both the second segment 123 and the third segment 124 are cylindrical, and the diameter of the third segment 124 is larger than the diameter of the second segment 123. When the second segment 123 passes through the mounting hole 11c and the clamping arm 131 clamps the first segment 122, the end face of the third segment 124 abuts against the area on the periphery of the mounting hole 11c, so that the clamping member 13 and the third segment 124 jointly restrict the radial displacement of the mounting member 12, thereby further improving the installation stability of the mounting member 12.

[0079] Please refer to Figure 10. The third segment 124 may include a first sub-segment 1241 and a second sub-segment 1242. The first sub-segment 1241 is connected to the second segment 123. The second sub-segment 1242 is located on the side of the first sub-segment 1241 away from the second segment 123, and the radial dimension of the second sub-segment 1242 is greater than the radial dimension of the first sub-segment 1241. The first sub-segment 1241 passes through the blade 20, and the second sub-segment 1242 is used to prevent the blade 20 from falling off the first sub-segment 1241.

[0080] Preferably, the length of the first segment 1241 is greater than the thickness of the blade 20, so as to leave room for the blade 20 to move on the first segment 1241, so that the blade 20 can rotate relative to the mounting member 12.

[0081] For example, referring to Figures 1, 2 and 5, the body 11 has a receiving cavity 11d for accommodating the blade 20, that is, the mounting hole 11c communicates with the receiving cavity 11d, and at least a portion of the structure of the third segment 124 is located in the receiving cavity 11d. When the lawnmower is working, at least a portion of the structure of the blade 20 extends out of the receiving cavity 11d to mow the lawn, and when the lawnmower stops working, the blade 20 can retract into the receiving cavity 11d.

[0082] In the embodiment where the main body 11 has a clearance hole 11b, the clearance hole 11b can be located on the side opposite to the mounting hole 11c in the receiving cavity 11d and communicate with the receiving cavity 11d. After the clamping member 13 releases the mounting member 12 and the mounting member 12 is detached from the mounting hole 11c, the mounting member 12 can be detached from the main body 11 from the clearance hole 11b, thereby realizing the quick disassembly of the mounting member 12.

[0083] In one embodiment, please refer to Figures 1 to 8. The main body 11 may include a cutter head 112 and a cover plate 113 covering one side of the cutter head 112. A clamping member 13 is disposed between the cover plate 113 and the cutter head 112. An unlocking member 14 is disposed on the cover plate 113. An mounting member 12 is movably disposed on the cutter head 112.

[0084] The unlocking member 14 can move relative to the cover plate 113 so that the unlocking member 14 can be displaced under the action of external force, thereby causing the clamping member 13 to be displaced.

[0085] The way the unlocking member 14 is disposed on the cover plate 113 is not limited. For example, please refer to Figures 1, 2, 7 and 8. The cover plate 113 may have a second clearance space 113a to avoid the unlocking member 14 and a spring arm 1131 disposed in the second clearance space 113a. The spring arm 1131 is connected to the unlocking member 14.

[0086] The elastic arm 1131 is used to connect the unlocking member 14 to the cover plate 113. Understandably, when the user applies external force to the unlocking member 14, the elastic arm 1131 undergoes elastic deformation, allowing the unlocking member 14 to move closer to the clamping member 13. When the external force disappears, the elastic arm 1131 returns to its original shape, thus actuating the unlocking member 14. In other words, the elastic arm 1131 can apply force to the unlocking member 14, ensuring that the protective cover always tends to return to its original position, thereby facilitating user operation.

[0087] Please refer to Figure 8. The main body 11 may include a limiting block 114 disposed on the cover plate 113. The limiting block 114 is located between the cover plate 113 and the cutter head 112 and faces the clamping member 13.

[0088] The limiting block 114 is used to limit the displacement of the clamping member 13 to prevent the clamping member 13 from falling off.

[0089] In another embodiment, the limiting block 114 may also be provided on the cutter head 112, or the limiting block 114 may be provided on both the cover plate 113 and the cutter head 112.

[0090] For example, referring to Figures 1 to 8, the cutter head 112 has a mounting hole 11c. The clamping member 13 is located on the side of the mounting hole 11c near the cover plate 113 along the through direction. The mounting member 12 passes through the mounting hole 11c and has a third pushing part 121. During the process of the mounting member 12 being placed on the cover plate 113, the mounting member 12 passes through the mounting hole 11c from the side of the mounting hole 11c away from the cover plate 113 along the through direction, and the third pushing part 121 faces the clamping arm 131. The third pushing part 121 extends into the cover plate 113 under the action of external force. Between the two clamping arms 131, and by abutting against the two clamping arms 131, the two clamping arms 131 are moved away from each other to clamp the mounting member 12. It can be understood that during the process of the third pushing part 121 pushing into the two clamping arms 131, the third pushing part 121 applies a force toward the cover plate 113 to the clamping member 13, so that the clamping member 13 tends to move toward the cover plate 113, and the limiting block 114 can limit the clamping member 13 so that the third pushing part 121 can extend between the two clamping arms 131.

[0091] In another embodiment, the unlocking member 14 can first be used to move the two clamping arms 131 away from each other under the action of external force, and then the mounting member 12 can be inserted between the two clamping arms 131. After that, the external force is removed, and the two clamping arms 131 are brought closer to each other to clamp the mounting member 12.

[0092] In the description of this application, the terms "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A cutter head assembly, comprising: main body; A mounting component for mounting a blade, the mounting component being movably disposed on the body; A clamping member disposed on the main body, the clamping member including two clamping arms, the two clamping arms clamping the mounting member to lock the mounting member to the main body; An unlocking component that, under the action of an external force, causes the two clamping arms to release the mounting component.

2. The cutter head assembly according to claim 1, wherein the clamping arm includes two clamping sections and two unlocking sections arranged opposite to each other, the two clamping sections clamp the mounting member, and a portion of the structure of the unlocking member extends between the two unlocking sections under the action of an external force, and releases the mounting member by abutting against the two unlocking sections, thereby moving the two clamping sections away from each other.

3. The cutter head assembly according to claim 2, wherein the distance between the two clamping sections is greater than the distance between the two unlocking sections.

4. The cutter head assembly according to claim 2 or 3, wherein the unlocking member includes a pressing portion and a first pushing portion toward the clamping member, the outer dimensions of the first pushing portion gradually decreasing from the end of the first pushing portion away from the clamping member to the end closer to the clamping member; the pressing portion, under the action of external force, drives the first pushing portion to extend between the two unlocking sections and abut against the two unlocking sections.

5. The cutter head assembly according to claim 4, wherein the main body has a first clearance space located on the side of the two unlocking sections opposite to the unlocking member, to avoid the first pushing portion extending between the two unlocking sections; and / or, The unlocking member includes a second pushing portion toward the mounting member. During the process of the clamping member releasing the mounting member, the second pushing portion applies a pushing force to the mounting member, causing the mounting member to move away from the clamping member, thereby disengaging from the clamping member.

6. The cutter head assembly according to any one of claims 1-3, wherein the main body has a fixing portion, and the clamping member further includes a fixing section; The two opposite ends of the fixing segment are respectively connected to the two clamping arms, and the fixing segment is sleeved on the fixing part; and / or, The clamping member further includes two opening segments arranged opposite to each other. The two opening segments are located at the ends of the two clamping arms opposite to the fixed segment, and the ends of the two opening segments away from the fixed segment are spaced apart to form openings.

7. The cutter head assembly according to any one of claims 1-3, wherein the body has a clearance hole for avoiding the mounting member, and the mounting member, released by the two clamping arms, disengages from the body through the clearance hole; and / or, The outer wall of the mounting component has a mounting groove, and the two clamping arms clamp the mounting component by engaging with the mounting groove.

8. The cutter head assembly according to any one of claims 1-3, wherein the mounting member has a third pushing portion facing the clamping arm, the outer dimensions of the third pushing portion gradually decreasing from one end away from the clamping arm to one end near the clamping arm; the third pushing portion extends between the two clamping arms under the action of an external force, and by abutting against the two clamping arms, the two clamping arms clamp the mounting member by moving away from each other.

9. The cutter head assembly according to any one of claims 1-3, wherein the main body has a mounting hole, the mounting member passes through the mounting hole, and the clamping member is located on one side of the mounting hole along the through direction.

10. The cutter head assembly according to claim 9, wherein the mounting member comprises a first segment, a second segment, and a third segment connected in sequence, the second segment being located in the mounting hole, the first segment and the second segment being located on opposite sides of the mounting hole, the two clamping arms clamping the first segment, and the third segment being used to mount the blade.

11. The cutter head assembly according to claim 10, wherein the third segment abuts against the area of ​​the body located on the periphery of the mounting hole.

12. The cutter head assembly according to any one of claims 1-3, wherein the main body includes a cutter head and a cover plate disposed on one side of the cutter head, the clamping member is disposed between the cover plate and the cutter head, the unlocking member is disposed on the cover plate, and the mounting member is movably disposed on the cutter head.

13. The cutter head assembly of claim 12, wherein the body includes a limiting block disposed on at least one of the cover plate and the cutter head, the limiting block being located between the cover plate and the cutter head and facing the clamping member; and / or, The cover plate has a second clearance space to avoid the unlocking member and a spring arm disposed in the second clearance space, the spring arm being connected to the unlocking member.

14. A lawnmower robot, comprising blades and a blade disc structure as described in any one of claims 1-13, wherein the blades are detachably connected to the mounting member.

15. The lawnmower robot of claim 14, wherein the mounting member passes through the blade to cause the blade to be rotatably connected to the mounting member.

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