An electric start lawnmower

Abstract

This utility model discloses an electrically started lawnmower, including a pole assembly with a mowing head at one end and an engine at the other. The electric starting device includes an electric starter assembly and an electronic control assembly. The electric starter assembly is connected to the engine via a transmission connection, and the electronic control assembly is mounted on the pole assembly and connected to the electric starter assembly via a first wire. The electronic control assembly has a battery holder with a start button and a battery pack on it. The electric starter assembly includes a motor and a gear set. The battery pack is electrically connected to the motor via the start button and the first wire. The motor output engages with the gear set, and the gear set output is connected to the engine input. This lawnmower reduces the reliance on physical force for starting by using an electric starting device, solving the drawbacks of manual starting, improving the convenience for different user groups, and also features safety protection and shock absorption structures.

Description

Technical Field

[0001] This utility model relates to the field of garden tool technology, specifically to an electric start lawnmower. Background Technology

[0002] Portable gasoline engines, due to their lightweight and powerful characteristics, are widely used in garden tools. Traditional small portable gasoline engines generally use a pull-type starter (such as a cord starter) as the starting method. However, this starting method has significant drawbacks; pulling the starter requires the operator to exert considerable instantaneous arm strength to overcome the engine's compression resistance, especially when starting a cold engine. This is difficult for users with less arm strength (such as women, the elderly, or teenagers), and may even result in failure to start the engine. For increasingly popular household users, starting difficulties have become a major factor leading to user dissatisfaction and negative product reviews, thus affecting the product's market reputation and sales. This starting difficulty limits the widespread adoption and application of portable gasoline-powered tools among a broader user base.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide an electric start lawnmower. By setting up an electric starter assembly consisting of a motor and a gear set, and cooperating with an electronic control assembly including a battery pack and a start button, the battery pack powers the motor, which in turn drives the engine to start via the gear set. This reduces the dependence on the operator's physical strength for starting the lawnmower, solves the problems of high strength requirements for users and difficulty in starting the cold machine in existing hand-operated lawnmowers, and improves the convenience of use for different user groups.

[0005] Technical Solution: This utility model provides an electrically started lawnmower including a pole assembly, one end of which is connected to a mowing head, and the other end to an engine, the engine driving the mowing head to perform mowing work; an electric starting device, the electric starting device including an electric starter assembly and an electronic control assembly, the electric starter assembly being drivenly connected to the engine, the electronic control assembly being mounted on the pole assembly and connected to the electric starter assembly via a first wire, the electronic control assembly including a battery holder, the battery holder having a start button, and a battery pack being mounted on the battery holder, the electric starter assembly including a motor and a gear set, the battery pack being electrically connected to the motor via the start button and the first wire, the output end of the motor being meshed with the gear set, and the output end of the gear set being drivenly connected to the input end of the engine. With the electronic control assembly mounted on the pole assembly, the operator only needs to press the start button on the battery holder, and the battery pack will supply power to the motor in the electric starter assembly through the first wire. The motor will run and drive the engine to start through the gear set, realizing the electric start of the lawnmower. This eliminates the cumbersome traditional manual start method and greatly simplifies the start-up operation process.

[0006] Furthermore, in this application, an electrically started lawnmower includes an electric starter assembly that also includes a starter base. The gear set includes a pinion, a double gear, a large gear, and a ratchet. The engine includes a starter dial mounted on the engine. The ratchet is coaxially connected to the large gear and mounted on a central column on the starter base. The double gear and the motor are also mounted on the starter base. The pinion is interference-fitted with the motor's output shaft, meshing with the double gear, and meshing with the large gear. When the start button is pressed, the battery pack connects to the motor via a first wire. The motor rotates, and the pinion on the motor's output shaft drives the double gear, which in turn drives the large gear. The large gear, via the ratchet, drives the starter dial, which is fixed to the engine crankshaft. Thus, the engine is driven, achieving the electric start process of the machine.

[0007] Furthermore, in one electric-start lawnmower of this application, the battery pack is 18V, and the battery holder is equipped with a current protector (not shown). The current protector can automatically reset in the circuit to prevent user error from causing the motor to overheat. The motor draws a relatively large current during startup, placing it under significant overload and preventing prolonged operation.

[0008] Furthermore, in an electrically started lawnmower of this application, the electronic control assembly further includes a mounting slot, in which the battery pack is detachably snapped into place, and the battery pack contacts the electrodes within the mounting slot. The mounting slot design of the electronic control assembly allows for easy detachable snap-in of the battery pack. Users simply align the battery pack with the mounting slot and, through simple pressing or sliding, securely snap the battery pack into the slot to complete the installation. When it is necessary to replace or charge the battery pack, it can also be quickly disassembled, making the operation simple and convenient, greatly improving the efficiency of battery pack replacement and maintenance.

[0009] Furthermore, in an electric start lawnmower of this application, the pole assembly includes a main pole and a handle. The two ends of the main pole are respectively connected to an engine and a mowing head. The handle is U-shaped and perpendicularly connected to the main pole. One end of the U-shaped handle is fitted with a handle sleeve, and the other end is equipped with a control handle. The control handle is electrically connected to the engine through a second wire.

[0010] Furthermore, in an electrically started lawnmower of this application, a shock-absorbing sleeve is provided between the main body rod and the battery holder. The shock-absorbing sleeve is fitted onto the main body rod and adapted to the battery holder. During the operation of the lawnmower, the shock-absorbing sleeve effectively absorbs vibrations generated by engine operation and the cutting of the lawn by the mower head, reducing the transmission of vibration from the main body rod to the battery holder and preventing the battery holder from becoming loose or damaged due to vibration.

[0011] Furthermore, in one electric-start lawnmower of this application, the shock-absorbing sleeve is made of rubber. Rubber has excellent elasticity and toughness; when the lawnmower vibrates during operation, the rubber shock-absorbing sleeve can absorb and buffer most of the vibration energy through its own deformation.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0013] 1. The electric start lawnmower of this utility model uses an electric starter assembly and an electronic control assembly to power a motor via a battery pack, which in turn drives the engine through a gear set. This reduces the dependence on the operator's physical strength during starting and solves the problems of existing hand-pulled start lawnmowers that require high strength from the user and are difficult to start when cold. It enables different user groups, including women, the elderly, or teenagers with less arm strength, to easily start the lawnmower, improving the convenience of use and helping to expand the application of portable gasoline-powered tools among a wider range of users.

[0014] 2. The electric start lawnmower of this utility model effectively prevents the risk of motor overload and overheating caused by misoperation or excessive start-up time by setting an automatically resettable current protector in the battery holder, thereby improving the safety and reliability of the system. At the same time, the use of rubber shock-absorbing sleeves to connect the battery holder and the main body effectively absorbs and buffers working vibrations, protecting the battery holder, battery pack and internal circuits from vibration damage and extending the service life of the electronic control components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an electrically started lawnmower according to the present invention;

[0016] Figure 2 This is an exploded schematic diagram of the electric starting device in an electric-start lawnmower according to the present invention;

[0017] Figure 3 This is a schematic diagram of the battery holder and battery pack structure in an electrically started lawnmower according to the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the engine in an electric start lawnmower after the protective shell has been removed.

[0019] Figure 5 This is a schematic diagram of the pole assembly structure in an electrically started lawnmower according to the present invention;

[0020] Figure 6 This is a schematic diagram of the shock-absorbing sleeve structure in an electrically started lawnmower according to the present invention.

[0021] Explanation of reference numerals on the accompanying drawings:

[0022] Explanation of reference numerals on the accompanying drawings:

[0023] 1-Bar assembly, 11-Main bar, 12-Handle bar, 13-Handle grip, 14-Control handle;

[0024] 2- Lawn mower head;

[0025] 3-Engine, 31-Starter dial;

[0026] 4-Electric starting device, 41-Electric starter assembly, 411-Motor, 4111-Output shaft, 412-Gear set, 4121-Pin gear, 4122-Double gear, 4123-Large gear, 4124-Ratchet, 413-Starter housing, 4131-Center column, 42-Electrical control assembly, 421-Battery holder, 422-Start button, 423-Battery pack, 424-Mounting slot, 425-Shock-absorbing sleeve;

[0027] 5-First conductor;

[0028] 6-Second conductor. Detailed Implementation

[0029] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figure 1-6 As shown in the figure, the electric start lawnmower of this embodiment has the following specific structure:

[0032] One end of the pole assembly 1 is fixedly connected to the mowing head 2, and the other end is connected to the engine 3. When the engine 3 is working, it outputs power to drive the mowing head 2 to rotate at high speed, thereby realizing the mowing operation.

[0033] The lawnmower is equipped with an electric starter 4, which includes an electric starter assembly 41 and an electronic control assembly 42. The electric starter assembly 41 is connected to the engine 3 for driving the engine 3 to start; the electronic control assembly 42 is mounted on the pole assembly 1 and is electrically connected to the electric starter assembly 41 through a first wire 5 to realize power transmission and control.

[0034] The electronic control assembly 42 includes a battery holder 421, on which a start button 422 is integrated, and a battery pack 423 is also mounted. The electronic control assembly 42 also has a mounting slot 424, in which the battery pack 423 is mounted in a detachable snap-fit ​​manner and contacts the electrodes within the mounting slot 424, ensuring that the battery pack 423 is in electrical connection with the electronic control assembly 42.

[0035] The electric starter assembly 41 includes a motor 411, a gear set 412, and a starter housing 413. The gear set 412 consists of a pinion 4121, a double gear 4122, a large gear 4123, and a ratchet 4124; a starter dial 31 is mounted on the engine 3 and is fixedly connected to the crankshaft of the engine 3.

[0036] Ratchet 4124 is coaxially connected to large gear 4123, and both are mounted on a central column 4131 on the starter base 413, allowing them to rotate around the central column 4131. Double gear 4122 and motor 411 are both fixedly mounted on the starter base 413. Small gear 4121 is interference-fitted with the output shaft 4111 of motor 411 and rotates synchronously with the output shaft 4111. Small gear 4121 meshes with double gear 4122, and double gear 4122 meshes with large gear 4123, forming a transmission chain.

[0037] The pole assembly 1 includes a main pole 11 and a handle 12. The main pole 11 is fixedly connected at both ends to the engine 3 and the mowing head 2, respectively, serving as the main body for power transmission and structural support. The handle 12 is U-shaped and perpendicularly connected to the main pole 11 for easy gripping. One end of the U-shaped handle 12 is fitted with a grip sleeve 13 to improve grip comfort; the other end is equipped with a control handle 14, which is electrically connected to the engine 3 via a second wire 6 to control the engine 3's operating status (such as idling, stopping, etc.).

[0038] A shock-absorbing sleeve 425 is provided between the main body rod 11 and the battery holder 421. The shock-absorbing sleeve 425 is fitted onto the main body rod 11 and is adapted to the battery holder 421. The shock-absorbing sleeve 425 is made of rubber. Utilizing the elasticity and toughness of rubber, it can effectively absorb the vibration generated when the lawnmower is working (engine 3 running, mowing head 2 cutting the lawn), reduce the transmission of vibration to the battery holder 421 and battery pack 423, and protect the electronic control components from vibration damage.

[0039] The battery pack 423 is 18V and is electrically connected to the motor 411 via the start button 422 and the first wire 5, forming a power supply circuit. The battery holder 421 is equipped with a current protector, which can automatically disconnect when the circuit is overloaded (such as when the start button 422 is accidentally pressed for a long time, causing the motor 411 to work for a long time), to prevent the motor 411 from overheating and being damaged. After the overload is removed, it will automatically reset and restore the normal circuit switching function.

[0040] The starting process of this electric start lawnmower is as follows:

[0041] Install the battery pack 423 in the mounting slot 424 and ensure that the circuit is connected; the operator holds the handle 12 and presses the start button 422. The power of the battery pack 423 is transmitted to the motor 411 through the start button 422 and the first wire 5, and the motor 411 starts running.

[0042] The output shaft 4111 of motor 411 drives pinion 4121 to rotate, which in turn drives a meshing double gear 4122 to rotate. The double gear 4122 then drives a meshing large gear 4123 to rotate, which in turn drives a coaxial ratchet 4124 to rotate synchronously. The ratchet 4124 cooperates with starter dial 31 to push starter dial 31 to rotate, which in turn drives the crankshaft of engine 3 to rotate, thus starting engine 3.

[0043] After the engine 3 is started, release the start button 422, the motor 411 stops working, and the lawnmower enters normal working state; at this time, the operation of the engine 3 can be adjusted by the control handle 14 to drive the mowing head 2 to perform mowing operations.

[0044] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An electrically-started lawnmower characterised in that: include: A pole assembly (1) is connected to a mowing head (2) at one end and an engine (3) at the other end. The engine (3) drives the mowing head (2) to perform mowing work. An electric starting device (4) includes an electric starter assembly (41) and an electronic control assembly (42). The electric starter assembly (41) is connected to the engine (3) via a transmission. The electronic control assembly (42) is mounted on the rod assembly (1) and connected to the electric starter assembly (41) via a first wire (5). The electronic control assembly (42) includes a battery holder (421), a start button (422) is provided on the battery holder (421), and a battery pack (423) is also installed on the battery holder (421). The electric starter assembly (41) includes a motor (411) and a gear set (412). The battery pack (423) is electrically connected to the motor (411) via the start button (422) and the first wire (5). The output end of the motor (411) is meshed with the gear set (412), and the output end of the gear set (412) is driven by the input end of the engine (3).

2. The electrically started lawnmower according to claim 1, characterized in that, The electric starter assembly (41) also includes a starter base (413). The gear set (412) includes a pinion (4121), a double gear (4122), a large gear (4123), and a ratchet (4124). The engine (3) includes a starter dial (31). The starter dial (31) is mounted on the engine (3). The ratchet (4124) is coaxially connected to the large gear (4123) and mounted on a central column (4131) on the starter base (413). The double gear (4122) and the motor (411) are also mounted on the starter base. The pinion (4121) is press-fitted to the output shaft (4111) of the motor (411). The pinion (4121) is meshed with the double gear (4122). The double gear (4122) is meshed with the large gear (4123).

3. The electrically started lawnmower according to claim 1, characterized in that, The battery pack (423) is 18V, and the battery holder (421) is equipped with a current protector. The current protector is automatically reset in the circuit to prevent the motor (411) from overheating due to user misoperation.

4. The electrically started lawnmower according to claim 1, characterized in that, The electronic control assembly (42) also includes a mounting slot (424), in which the battery pack (423) is detachably snapped into the mounting slot (424), and the battery pack (423) contacts the electrodes within the mounting slot (424).

5. An electrically started lawnmower according to claim 1, characterized in that, The pole assembly (1) includes a main pole (11) and a handle (12). The two ends of the main pole (11) are connected to the engine (3) and the mowing head (2) respectively. The handle (12) is U-shaped and is perpendicularly connected to the main pole (11). One end of the handle (12) is fitted with a handle sleeve (13), and the other end is fitted with a control handle (14). The control handle (14) is electrically connected to the engine (3) through a second wire (6).

6. An electrically started lawnmower according to claim 5, characterized in that, A shock-absorbing sleeve (425) is provided between the main body rod (11) and the battery holder (421). The shock-absorbing sleeve (425) is fitted onto the main body rod (11) and is adapted to the battery holder (421).

7. An electrically started lawnmower according to claim 6, characterized in that, The shock-absorbing sleeve (425) is made of rubber.

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