Quick locking structure of mower

Abstract

The problems that in the prior art, a rapid locking structure is complex in installation, and the reliability of a locking screw joint is low are solved. The utility model provides a quick locking structure of a mower. The quick locking structure comprises a base part, a push rod part and a locking part, wherein the base part comprises a base plate and a nut fixing plate, a first connecting hole is formed in the base plate, a first rib plate is arranged along one side of the first connecting hole, a first groove is formed in the back face of a first connecting tooth, and the nut fixing plate is arranged in the first groove and fixedly connected with the base plate through a screw; the push rod part comprises a push rod and a rotary fixing plate which are connected with each other, and a second connecting hole is formed in the rotary fixing plate; the locking part comprises a wrench and a locking bolt which are hinged to each other, and the locking bolt sequentially penetrates through the second connecting hole and the first connecting hole and then is connected with the nut fixing plate. The utility model has the following beneficial effects: firstly, the installation efficiency is improved; and secondly, the reliability and durability of the connection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a quick locking structure for lawn mowers. Background Art

[0002] Existing garden tools, such as four-wheel power tools, lawn mowers, scarifiers or grass combers, play an indispensable role in gardening maintenance operations. These tools often need to adjust or replace the push rods according to different operating environments and needs to adapt to changing gardening scenes. In order to meet this demand for rapid adjustment, a structure that can quickly fix and lock the push rod on the chassis is particularly important.

[0003] Chinese utility model patent CN202222984928 discloses a lawn mower, which includes a novel locking structure. The core of this structure is to pass the rotating rod through the second rotating hole, then penetrate into the first rotating hole, and finally connect with the limit nut. This design ensures the stability of the connection between the rotating rod and the casing. In order to further enhance the convenience and flexibility of this structure, the limit nut is cleverly installed in the limit groove. When the limit nut is partially deformed due to long-term use, the user can easily replace it.

[0004] However, although the locking structure described in the patent can achieve a quick fixation and locking effect, it also exposes some potential problems in actual application. Specifically, since the limit nut adopts a square nut, the assembly process needs to rely on the operator's experience or special tooling to ensure the alignment of the rotating rod and the square nut. This requirement not only increases the complexity of installation, but may also affect the overall connection quality due to inaccurate alignment.

[0005] In addition, the coordination between the square nut and the limit slot also has certain design limitations. In order to maintain the overall structural strength, the opening size of the limit slot is limited to a relatively small range. This design further increases the difficulty of installation and may reduce the reliability of the connection between the square nut and the rotating rod. Under long-term use or high-intensity operating conditions, this structure is more prone to quality problems such as loosening and breaking. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a quick locking structure for a lawn mower, which solves the problems in the prior art of complex installation of the quick locking structure and low reliability of the locking screw joint.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a quick locking structure of a lawn mower, comprising a base part, a push rod part and a locking part; wherein the base part comprises a chassis and a nut fixing plate, a first connecting hole is arranged on the chassis, a first rib plate is arranged along one side of the first connecting hole, a first groove is arranged on the back side of the first connecting tooth, the nut fixing plate is arranged in the first groove and is fixedly connected to the chassis by screws; the push rod part comprises a push rod and a rotating fixing plate connected to each other, wherein a second connecting hole is arranged in the rotating fixing plate; the locking part comprises a wrench and a locking bolt hinged to each other, wherein the locking bolt passes through the second connecting hole and the first connecting hole in sequence and then is connected to the nut fixing plate.

[0008] Furthermore, a second rib plate is provided along one side of the second connection hole, wherein the first rib plate corresponds to the second rib plate.

[0009] Furthermore, a second groove is provided on the back side of the second rib plate; and the wrench is provided with a cam portion, which matches the second groove.

[0010] Furthermore, one end of the wrench is an operating handle, and the other end of the wrench is connected to a locking bolt via a pin shaft; the cam portion includes a first profile and a second profile, and the first profile is farther from the pin shaft than the second profile; the first profile is closer to the operating handle end than the second profile.

[0011] Furthermore, the first profile surface is an arc surface.

[0012] Furthermore, bent portions are provided on both sides of the nut fixing plate.

[0013] The principle of the utility model is as follows: the base part includes a chassis and a nut fixing plate, wherein the chassis, i.e., the housing of the lawn mower, is integrally provided with a first connecting hole on the side of the housing. In order to enhance the structural strength, a first rib plate is provided along the outer side of the housing and around the periphery of the first connecting hole, which can not only increase the rigidity of the chassis, but also effectively disperse the stress and vibration generated by the lawn mower during use. A first groove is provided on the inner side of the housing, which saves materials and reduces the overall weight; and the first connecting hole is located in the first groove, which provides convenience for the subsequent connection with the nut fixing plate. The nut fixing plate is a plate-shaped structure as a whole, and a protruding nut is provided on the nut fixing plate. When the nut fixing plate is installed in the first groove and fixedly connected with the chassis by screws, the nut on the nut fixing plate just corresponds to the first connecting hole. The push rod part includes a push rod and a rotating fixing plate connected to each other by screws, wherein the rotating fixing plate is provided with a second connecting hole. The locking part includes a wrench and a locking bolt hinged to each other, and a pin shaft hole is provided on the wrench for installing the pin shaft. The tail of the locking bolt is hinged to the wrench through a pin shaft, and the threaded end of the locking bolt passes through the second connecting hole and the first connecting hole in sequence and is connected to the nut fixing plate.

[0014] Compared with the prior art, the utility model has the following beneficial effects: First, the installation efficiency is improved: by increasing the fixed connection between the nut fixing plate and the chassis, the movement of the nut fixing plate when the locking bolt is installed is avoided, thereby significantly improving the installation efficiency. Second, the connection reliability is enhanced: the raised nut design on the nut fixing plate increases the length of the threaded engagement between the locking bolt and the nut fixing plate, thereby improving the reliability and durability of the connection. Third, the structure is optimized: the overall structural design is compact, taking into account both structural strength and lightweight and easy operability, making the lawn mower more stable, efficient and safe during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the application of the utility model to a lawn mower;

[0016] Figure 2 This is a cross-sectional schematic diagram of the locking structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the chassis of the utility model from the first perspective;

[0018] Figure 4 for Figure 3 A partial enlarged schematic diagram;

[0019] Figure 5 This is a schematic diagram of the first perspective of the rotating fixed plate of the utility model;

[0020] Figure 6 This is a schematic diagram of the second viewing angle of the rotating fixing plate of the utility model;

[0021] Figure 7 This is a schematic diagram of the wrench of the utility model from the first perspective;

[0022] Figure 8 This is a schematic diagram of the nut fixing plate of the utility model from the first perspective.

[0023] In the figure: 100 lawn mower, 200 locking structure, 210 chassis, 211 first connecting hole, 212 first rib plate, 213 first groove, 220 nut fixing plate, 221 bent portion, 230 push rod, 240 rotation fixing plate, 241 second connecting hole, 242 second rib plate, 243 second groove, 250 wrench, 251 operating handle, 252 first profile, 253 second profile, 254 pin shaft hole, 260 locking bolt. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] As attached Figures 1 to 4 As shown, the quick locking structure 200 of the lawn mower 100 includes a base part, a push rod part and a locking part; wherein the base part includes a chassis 210 and a nut fixing plate 220, a first connecting hole 211 is provided on the chassis 210, a first rib plate 212 is provided along one side of the first connecting hole 211, a first groove 213 is provided on the back side of the first connecting tooth, the nut fixing plate 220 is provided in the first groove 213 and is fixedly connected to the chassis 210 by screws; the push rod part includes a push rod 230 and a rotating fixing plate 240 connected to each other, wherein the rotating fixing plate 240 is provided with a second connecting hole 241; the locking part includes a wrench 250 and a locking bolt 260 which are hinged to each other, wherein the locking bolt 260 passes through the second connecting hole 241 and the first connecting hole 211 in sequence and then is connected to the nut fixing plate 220.

[0026] In specific use, the base part includes a chassis 210 and a nut fixing plate 220, wherein the chassis 210, i.e., the housing of the lawn mower 100, is provided with a first connecting hole 211 integrally on the side of the housing. In order to enhance the structural strength, a first rib plate 212 is provided along the outer side of the housing around the first connecting hole 211, which can not only increase the rigidity of the chassis 210, but also effectively disperse the stress and vibration generated by the lawn mower 100 during use. A first groove 213 is provided on the inner side of the housing, which saves materials and reduces the overall weight; and the first connecting hole 211 is located in the first groove 213, which facilitates the subsequent connection with the nut fixing plate 220. The nut fixing plate 220 is a plate-like structure as a whole, and a protruding nut is provided on the nut fixing plate 220. When the nut fixing plate 220 is inserted into the first groove 213 and fixedly connected with the chassis 210 by screws, the nut on the nut fixing plate 220 just corresponds to the first connecting hole 211. The push rod portion includes a push rod 230 and a rotating fixed plate 240 connected to each other by screws, wherein a second connecting hole 241 is provided in the rotating fixed plate 240. The locking portion includes a wrench 250 and a locking bolt 260 hinged to each other, and a pin hole 254 is provided on the wrench 250 for installing a pin. The tail of the locking bolt 260 is hinged to the wrench 250 through the pin, and the threaded end of the locking bolt 260 passes through the second connecting hole 241 and the first connecting hole 211 in sequence and is connected to the nut fixing plate 220.

[0027] The adoption of this technical solution has the following technical advantages. First, the installation efficiency is improved: by increasing the fixed connection between the nut fixing plate 220 and the chassis 210, the movement of the nut fixing plate 220 when the locking bolt 260 is installed is avoided, thereby significantly improving the installation efficiency. Second, the connection reliability is enhanced: the raised nut design on the nut fixing plate 220 increases the length of the threaded engagement between the locking bolt 260 and the nut fixing plate 220, thereby improving the reliability and durability of the connection. Third, structural optimization: the overall structural design is compact, which takes into account both structural strength and lightweight and easy operability, making the lawn mower 100 more stable, efficient and safe during use.

[0028] Further, refer to Figures 5 and 6 , a second rib plate 242 is provided along one side of the second connection hole 241; this feature is not only to enhance the structural strength, but also to form a correspondence and synergy with the first rib plate 212 on the chassis 210. When the first rib plate 212 corresponds to the second rib plate 242, they together constitute a more stable connection system, which can significantly improve the strength and rigidity of the entire locking structure 200. Such a design is of great significance in practical applications. During the operation of the lawn mower 100, especially in a complex and changeable working environment, the locking structure 200 may be subjected to impacts and vibrations from different directions. By providing the first rib plate 212 and the second rib plate 242 corresponding to each other, we can effectively disperse and resist these external forces, thereby protecting the locking structure 200 from damage and ensuring the normal operation and safe use of the lawn mower 100.

[0029] Furthermore, the back of the second rib plate 242 is also provided with a second groove 243; the wrench 250 is provided with a cam portion, and the cam portion matches the second groove 243. By providing the cam portion and the second groove 243 that match each other, the wrench 250 can be quickly positioned during installation, saving installation time, and the operator can easily complete the installation without spending too much time and energy on adjustment and calibration, thereby greatly improving the installation efficiency. In order to further improve the reliability of locking, a countersink is also provided in the second groove 243. When the wrench 250 is locked, the cam portion will apply a certain pressure to the countersink. Under the action of this pressure, the material around the countersink will undergo a slight deformation, thereby tightly locking the cam portion. This method of achieving locking by deformation is not only simple and effective, but also can significantly improve the reliability and stability of locking. Even in the case of long-term use or external impact, the locking state can be maintained unchanged, ensuring the normal operation and safety of the lawn mower 100.

[0030] Furthermore, refer to Figure 7As shown, the design of the wrench 250 fully considers practicality and ergonomic principles. One end of the wrench 250 is an operating handle 251, which is convenient for users to hold and operate; the other end of the wrench 250 is connected to the locking bolt 260 through a pin shaft, realizing a flexible rotation function. This structure not only makes the wrench 250 more convenient in use, but also effectively improves its locking reliability. The cam portion includes a first profile 252 and a second profile 253, and the first profile 252 is farther from the pin shaft than the second profile 253; the first profile 252 is closer to the end of the operating handle 251 than the second profile 253; this layout enables the first profile 252 to contact the rotating fixed plate 240 earlier and more tightly during the rotation of the wrench 250, thereby achieving a more reliable clamping effect. Furthermore, the first profile 252 is an arc surface, which not only makes the contact between the wrench 250 and the rotating fixed plate 240 smoother, reduces wear and friction, but also realizes line contact between the wrench 250 and the rotating fixed plate 240, increases the contact area, and improves the stability and reliability of locking. In addition, when the wrench 250 and the rotating fixed plate 240 are in the tightest contact with each other, the angle between the extension direction of the pin hole 254 of the wrench 250 toward the operating handle 251 and the axis of the locking bolt 260 is less than 90°, which can reduce the wrench 250 from loosening due to vibration or other external forces during the use of the lawn mower 100, thereby further improving the reliability of locking.

[0031] Further, refer to Figure 8 As shown, the nut fixing plate 220 is provided with a curved portion 221 on both sides, which not only effectively enhances the overall strength of the nut fixing plate 220, but also improves its ability to resist external shock and vibration to a certain extent. When the lawn mower 100 is running in a complex working environment, this enhanced structural strength can ensure that the nut fixing plate 220 remains stable and avoids deformation or damage due to external forces. In addition to enhancing the structural strength, the curved portion 221 also brings great convenience to the installation process. During the installation process, the operator can use the curved portion 221 to abut against the first groove 213 on the chassis 210. This abutment not only achieves rapid positioning, but also ensures accurate alignment between the nut fixing plate 220 and the chassis 210. In this way, the operator can easily load the nut fixing plate 220 into the first groove 213 without complicated adjustments and calibrations, and fix it with the chassis 210 by screws. This design not only greatly saves installation time, but also reduces the difficulty of operation, making the installation process more efficient and smooth.

Claims

1. The lawn mower quick locking structure is characterized by: The invention comprises a base part, a push rod part and a locking part; wherein the base part comprises a chassis (210) and a nut fixing plate (220); a first connecting hole (211) is arranged on the chassis (210); a first rib plate (212) is arranged along one side of the first connecting hole (211); a first groove (213) is arranged on the back side of the first connecting tooth; the nut fixing plate (220) is arranged in the first groove (213) and is fixedly connected to the chassis (210) by screws; the push rod part comprises a push rod (230) and a rotating fixing plate (240) which are connected to each other; wherein a second connecting hole (241) is arranged in the rotating fixing plate (240); and the locking part comprises a wrench (250) and a locking bolt (260) which are hinged to each other; wherein the locking bolt (260) passes through the second connecting hole (241) and the first connecting hole (211) in sequence and is connected to the nut fixing plate (220).

2. The lawn mower quick locking structure according to claim 1, characterized in that: A second rib plate (242) is provided along one side of the second connection hole (241); wherein the first rib plate (212) corresponds to the second rib plate (242).

3. The lawn mower quick locking structure according to claim 2, characterized in that: The back side of the second rib plate (242) is also provided with a second groove (243); the wrench (250) is provided with a cam portion, and the cam portion matches the second groove (243).

4. The lawn mower quick locking structure according to claim 3, characterized in that: One end of the wrench (250) is an operating handle (251), and the other end of the wrench (250) is connected to a locking bolt (260) via a pin shaft; the cam portion comprises a first profile (252) and a second profile (253), and the first profile (252) is farther from the pin shaft than the second profile (253); the first profile (252) is closer to the end of the operating handle (251) than the second profile (253).

5. The lawn mower quick locking structure according to claim 4, characterized in that: The first profile surface (252) is an arc surface.

6. The lawn mower quick locking structure according to any one of claims 1 to 5, characterized in that: Bending portions (221) are provided on both sides of the nut fixing plate (220).

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