Detachable cutter head flange structure

Abstract

The utility model discloses a detachable cutter head flange and anti -blocking disc structure for mower. Including motor, cutter head flange, cutter, bearing assembly, anti -blocking disc and locking element. The flat position and the screw are equipped on motor shaft, the cutter head flange is installed on motor shaft through the flat position spacing, the cutter is fixed in cutter head flange, bearing assembly includes bearing seat and bearing, is installed on cutter head flange shaft portion outer diameter, anti -blocking disc is fixed in bearing seat, locking element will cutter head flange and bearing assembly fixed in motor shaft. The utility model has realized the convenient dismounting of motor and cutter head flange, prevents the blocking of foreign matter through the free rotation of anti -blocking disc simultaneously, has improved equipment reliability and maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, specifically to a detachable blade flange and anti-clogging disc structure. Background Technology

[0002] A lawnmower is a common mechanical tool used for mowing and maintaining lawns and vegetation, widely applied in areas such as lawn trimming and urban greening. Traditional lawnmowers typically use a direct connection between the motor and the cutter head, with a flange press-fitted onto the motor shaft, and the cutter head fixed by the flange. This structure has the following disadvantages: First, the press-fit connection between the motor and the flange makes disassembly difficult, making maintenance and replacement of the motor inconvenient; second, the cutter head is prone to encountering foreign objects (such as stones and branches) during operation, causing it to stall, which in turn damages the cutter head and motor, affecting the equipment's lifespan and safety.

[0003] While some improvements exist in existing technologies, most fail to simultaneously address the issues of ease of assembly and disassembly and prevention of jamming. Therefore, there is an urgent need for a simple, reliable, and easy-to-maintain cutterhead flange and anti-clogging disc structure. Summary of the Invention

[0004] The purpose of this utility model is to provide a detachable cutter head flange and anti-clogging disc structure to solve the problems of difficulty in disassembling the motor and cutter head flange and easy jamming of the cutter head in existing lawnmowers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A detachable blade flange structure for a lawnmower includes:

[0007] The motor has a flat section and a thread on its shaft;

[0008] The cutter head flange is mounted on the motor shaft and is circumferentially limited by the flat part;

[0009] The cutter head is fixedly connected to the cutter head flange;

[0010] A bearing assembly, including a bearing housing and a bearing, is mounted on the outer diameter of the shaft portion of the cutterhead flange;

[0011] An anti-clogging disc is fixedly connected to the bearing housing; and a locking element is used to fix the cutter head flange and bearing assembly to the motor shaft.

[0012] Furthermore, the cutterhead flange has a hollow structure.

[0013] Furthermore, the cutter head is fixed to the end face of the cutter head flange by screws.

[0014] Furthermore, the anti-clogging disc is fixed to the end face of the bearing housing by screws.

[0015] Furthermore, the bearing is mounted on the outer diameter of the lower part of the cutter head flange shaft, and the bearing housing supports the bearing.

[0016] Furthermore, the locking element is a nut, which is threaded onto the threaded portion of the motor shaft and tightens to press and fix the cutter head flange and bearing seat.

[0017] Furthermore, it also includes a motor bracket, on which the motor is mounted by screws.

[0018] Furthermore, the anti-clogging disc is rotatably connected to the cutter head flange via the bearing assembly. When a foreign object comes into contact with the anti-clogging disc, the anti-clogging disc can rotate freely without hindering the rotation of the cutter head and the motor.

[0019] Furthermore, the cutter head flange allows for convenient disassembly and installation from the motor shaft via the flat and locking elements.

[0020] This utility model also provides a lawnmower, including the detachable blade flange structure described in any of the above claims.

[0021] The purpose of this invention is to provide a detachable cutter disc flange structure to solve the problems of difficulty in disassembling the motor and cutter disc flange in existing lawnmowers and the easy jamming of the cutter disc. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0023] Figure 1 This is an exploded structural diagram of a detachable cutter head flange structure according to this utility model;

[0024] Figure 2 This is a cross-sectional view of a detachable cutter head flange structure according to this utility model.

[0025] Figure 3 This is a three-dimensional schematic diagram of a detachable cutter head flange structure according to this utility model;

[0026] Figure 4 This is a top view schematic diagram of a detachable cutter head flange structure according to this utility model;

[0027] Figure 5This is a bottom view schematic diagram of a detachable cutter head flange structure according to this utility model;

[0028] Figure 6 This is a three-dimensional schematic diagram of another detachable cutter head flange structure of this utility model.

[0029] In the diagram: 100 - Detachable cutter head flange structure, 110 - Motor, 120 - Motor bracket, 130 - Cutter head flange, 140 - Bearing assembly, 141 - Bearing housing, 142 - Bearing, 150 - Anti-clogging disc, 160 - Cutter head, 170 - Nut. Specific Implementation

[0030] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0033] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. This embodiment provides a detachable cutter head flange and an anti-clogging disc structure. This structure not only enables convenient assembly and disassembly of the cutter head flange and the motor shaft, but also effectively prevents stalling during operation through a unique anti-clogging disc design.

[0034] like Figure 1The exploded structural diagram shown illustrates the disassembled state of each component of this utility model. The detachable cutter head flange structure 100 mainly includes a motor 110, a motor bracket 120, a cutter head flange 130, a bearing assembly 140, an anti-clogging disc 150, a cutter head 160, and a nut 170.

[0035] See Figure 2 The cross-sectional view shows that the motor 110 is fixedly mounted on the motor bracket 120 with screws. The output shaft of the motor 110 has a special structure, with a flat section and a threaded section machined on it. The flat section has a polygonal cross-section structure and is used to transmit torque and achieve circumferential limiting; the threaded section is located at the end of the shaft and is used to install a lock nut.

[0036] The cutter head flange 130 has a hollow structure, and its inner hole shape matches the flat section of the motor shaft, allowing it to slide onto the motor shaft. Through the flat fit, the cutter head flange 130 can rotate synchronously with the motor shaft and move freely in the axial direction, which facilitates subsequent disassembly and maintenance.

[0037] The cutter head 160 is evenly fixed to the lower end face of the cutter head flange 130 by multiple screws. The cutter head 160 can use different shaped cutting blades, which can be selected and replaced according to actual trimming needs.

[0038] The bearing assembly 140 includes a bearing housing 141 and a bearing 142. The bearing 142 is preferably a deep groove ball bearing, whose inner ring is tightly fitted onto the outer diameter of the lower part of the cutterhead flange 130 shaft. The bearing housing 141 has a cylindrical structure, with its upper end supporting and fixing the outer ring of the bearing 142, and its lower end having a mounting flange.

[0039] The anti-clogging disc 150 is fixedly connected to the mounting flange at the lower end of the bearing housing 141 by screws. The anti-clogging disc 150 is disc-shaped, and its diameter is slightly larger than the rotation range of the cutter head 160, which can effectively prevent foreign objects from the ground from entering the rotation area of ​​the cutter head.

[0040] Nut 170 serves as a locking element and is threaded onto the threaded section at the end of the motor shaft. By tightening nut 170, components such as the cutter head flange 130 and bearing assembly 140 can be pressed and fixed onto the motor shaft, forming a stable transmission system.

[0041] The working principle of this utility model is as follows:

[0042] When the motor 110 starts, the torque is transmitted to the cutter head flange 130 through the flat section on the motor shaft, driving the cutter head 160 to rotate at high speed and complete the mowing operation. During this process, the anti-clogging disc 150 is rotatably connected to the cutter head flange 130 through the bearing assembly 140. Specifically, the bearing 142 allows the anti-clogging disc 150 to rotate freely relative to the cutter head flange 130.

[0043] When the lawnmower encounters foreign objects such as stones or branches during operation, the anti-clogging disc 150 comes into contact with the object first. Because the anti-clogging disc 150 can rotate freely, the foreign object cannot generate effective resistance torque, thus not hindering the continuous rotation of the cutter head 160 and the motor 110. This design cleverly transforms the impact of the foreign object into the rotational motion of the anti-clogging disc 150, effectively avoiding the cutter head jamming phenomenon caused by foreign object obstruction in traditional structures, and protecting the motor and transmission system.

[0044] During maintenance and disassembly, simply loosen nut 170 with a regular wrench to remove the entire cutter head flange 130, bearing assembly 140, anti-clogging disc 150, and cutter head 160 from the motor shaft. No special tools are required, which greatly simplifies the maintenance process and improves repair efficiency.

[0045] Figures 3 to 5 The three-dimensional, top-down, and bottom-up views of this utility model are shown respectively, clearly displaying the external structure and relative positional relationship of each component. Figure 6 Another implementation is shown, which has the same main structure as the previous embodiment, except for the shape and arrangement of the anti-blocking disc 150, but can also achieve the functions of anti-blocking rotation and easy disassembly and assembly.

[0046] The various components of this utility model can be made of materials such as steel, aluminum alloy, or engineering plastics. Among them, key transmission components such as the cutter head flange 130 and bearing seat 141 are preferably made of engineering plastics; the anti-clogging disc 150 can be made of aluminum alloy, which is lightweight and scratch-resistant.

[0047] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A detachable blade flange structure for a lawnmower, characterized in that, include: The motor has a flat section and a thread on its shaft; The cutter head flange is mounted on the motor shaft and is circumferentially limited by the flat part; The cutter head is fixedly connected to the cutter head flange; A bearing assembly, including a bearing housing and a bearing, is mounted on the outer diameter of the shaft portion of the cutterhead flange; An anti-clogging disc is fixedly connected to the bearing housing; and a locking element is used to fix the cutter head flange and bearing assembly to the motor shaft.

2. The detachable cutterhead flange structure according to claim 1, characterized in that, The cutterhead flange has a hollow structure.

3. The detachable cutterhead flange structure according to claim 1, characterized in that, The cutter head is fixed to the end face of the cutter head flange by screws.

4. The detachable cutterhead flange structure according to claim 1, characterized in that, The anti-clogging disc is fixed to the end face of the bearing housing by screws.

5. The detachable cutterhead flange structure according to claim 1, characterized in that, The bearing is mounted on the outer diameter of the lower part of the cutter head flange shaft, and the bearing housing supports the bearing.

6. The detachable cutterhead flange structure according to claim 1, characterized in that, The locking element is a nut, which is threaded onto the threaded portion of the motor shaft and tightens to press and fix the cutter head flange and bearing seat.

7. The detachable cutterhead flange structure according to claim 1, characterized in that, It also includes a motor bracket, on which the motor is mounted by screws.

8. The detachable cutterhead flange structure according to claim 1, characterized in that, The anti-clogging disc is rotatably connected to the cutter head flange via the bearing assembly. When a foreign object comes into contact with the anti-clogging disc, the anti-clogging disc can rotate freely without preventing the rotation of the cutter head and the motor.

9. The detachable cutterhead flange structure according to claim 1, characterized in that, The cutter head flange can be easily disassembled and installed with the motor shaft through the flat and locking elements.

10. A lawnmower, characterized in that, Includes the detachable cutterhead flange structure as described in any one of claims 1 to 9.

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