CN213784251U

CN213784251U - Hand-push type electric tool

Info

Publication number: CN213784251U
Application number: CN202022783953.3U
Authority: CN
Inventors: 丁敏; 韦群力; 朱飞
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-27
Anticipated expiration: 2030-11-27

Abstract

The utility model provides a hand-push type electric tool, which comprises a frame, a walking wheel used for supporting the frame, a motor used for driving the walking wheel, a transmission device used for transmitting the driving force of the motor to the walking wheel and a brake device used for braking the walking wheel, wherein the frame is provided with a handle; the self-locking device comprises a locking element which is rotatably connected to the rack and a limiting element used for limiting the locking element, and the locking element is provided with a control part which can support the handle. The beneficial effects of the utility model are that through setting up self-lock device in the parking is stopped the mechanism for parking easy operation, comfortable, control are accurate, have improved the experience degree when the user uses.

Description

Hand-push type electric tool

Technical Field

The utility model relates to an electric tool especially relates to hand propelled electric tool.

Background

Hand-push electric tools such as lawn mowers and snow throwers are commonly used garden tools, and the hand-push electric tools are generally driven by a motor and drive an output shaft provided with a blade to operate through a belt or gear transmission and the like. Hand propelled electric tool in the existing market generally adopts the pull rod to loosen take-up pulley mechanism and parks. However, such a standing mechanism is complex and not easy to assemble and debug; meanwhile, because of many parts, the production cost and the later maintenance cost are expensive. In addition, when parking and parking, the operator is required to hold the handle to keep the parking state, which is very inconvenient to operate and poor in user experience.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an easy operation, comfortable, control more accurate hand propelled electric tool.

In order to achieve the purpose, the utility model provides a hand-push type electric tool, which comprises a frame, a walking wheel for supporting the frame, a motor for driving the walking wheel, a transmission device for transmitting the driving force of the motor to the walking wheel and a brake device for braking the walking wheel, wherein the frame is provided with a handle, the brake device comprises a pull wire connected with the handle so as to drive the brake device to act under the action of the handle, and the hand-push type electric tool also comprises a self-locking device for locking the handle; the self-locking device comprises a locking element which is rotatably connected to the rack and a limiting element used for limiting the locking element, and the locking element is provided with a control part which can support the handle.

As a further improvement of the present invention, in the parking and parking state, the locking element cooperates with the position-limiting element at the first position to limit the movement of the handle, and the release of the hand is realized; when the parking and parking state is changed into the starting state, the locking element returns to the second position under the pulling force of the return elastic piece, and is limited by the limiting element at the second position.

As a further improvement, the latch element is provided with a latch portion, the self-locking device locks the handle, the latch portion cooperates with the limiting element, and the position control portion cooperates with the handle.

As a further improvement of the utility model, the limiting element comprises a first limiting block and a second limiting block, and the limiting element is arranged on the same side of the frame.

As a further improvement, a step part is formed on the locking part, the self-locking device locks the handle, and the step part is matched with the first limiting block.

As a further improvement of the present invention, the return elastic member is interposed between the locking member and the handle.

As a further improvement of the present invention, the locking element further includes a head, the locking portion further includes a sector rotating portion, the sector rotating portion is formed at the top of the head and can be matched with the second stopper to limit the reset movement of the locking element.

As a further improvement of the utility model, the return elastic member is a torsion spring.

As a further improvement of the utility model, the controller and the switch that can be triggered by the hand (hold) are still included, the controller with switch, motor are connected to correspond the control motor action.

As a further improvement of the utility model, the hand-push type electric tool is a mower.

The beneficial effects of the utility model are that park through at hand propelled electric tool and park and set up self-lock device in the mechanism for parking easy operation, comfortable, control are accurate, have improved the experience degree when the user uses.

Drawings

Fig. 1 is a schematic view of the hand-push type electric tool of the present invention.

Fig. 2 is another schematic view of the hand-push type electric tool of the present invention.

Fig. 3 is a partial schematic view of the brake handle and the self-locking device.

Fig. 4 is a partially enlarged view of fig. 3.

Fig. 5 is an exploded perspective view of the brake handle and the self-locking device.

Fig. 6 is another perspective view of the brake handle and the self-locking device.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

The hand-push type electric tool shown in fig. 1 may be an electric machine for performing work indoors or outdoors, and in the present embodiment, the hand-push type electric tool is exemplified by a lawn mower 100. It is understood that the hand-push type electric tool can also be other types of tools, such as a snow sweeper, a scarifier and the like, but the invention is not limited thereto.

As shown in fig. 1-3, the present invention provides a lawn mower 100. The mower 100 comprises a frame 8, a travelling wheel 7 for supporting the frame, a motor for driving the travelling wheel 7, a transmission device 3 for transmitting the driving force of the motor to the travelling wheel 7, and a brake device for braking the travelling wheel 7. The frame 8 is provided with a handle 6, specifically, the frame 8 comprises a brake handrail 1, and the handle 6 is connected to the brake handrail 1. The brake device comprises a stay wire 2 connected with a handle 6, and when an operator operates the handle 6, the handle drives the stay wire 2 to move, so that the brake device is driven to brake the travelling wheel 7. In this embodiment, the transmission device 3 includes a driving axle 30 disposed between the motor and the traveling wheel 7, the pull wire 2 connects the handle 6 and the driving axle 30, and the brake device further includes a drum brake, and since the driving axle and the drum brake are known to those skilled in the art, the structure and the working principle thereof will not be described herein again.

In addition, in this embodiment, the lawn mower 100 further includes a controller and a switch 4, preferably, the switch 4 is disposed on the handle 6 and can be triggered by the handle 6, the controller is connected to the switch 4 and the motor, and the handle 6 triggers the switch 4 to enable the switch 4 to send a signal to the controller, so as to control the motor to be locked, and realize parking of the lawn mower 100. When the mower 100 of the present embodiment is used for parking, it is preferable that the controller controls the motor to lock to park, and then the brake device brakes the travelling wheels 7 to park. Of course, the mower 100 can also brake the road wheels 7 directly through the brake device to realize parking.

The lawn mower 100 of the embodiment further comprises a self-locking device 5 for locking the handle 6, wherein the self-locking device 5 is rotatably connected to the frame 8, and specifically, the self-locking device 5 is installed on one side of the brake handrail 1 of the frame 8. The design and the arrangement of the self-locking device 5 enable the hand of an operator to leave the handle 6 without holding for a long time, and the operation is simpler, more convenient and more effective. In the present embodiment, the self-locking devices 5 are respectively disposed at the left and right braking handrails 1 of the lawn mower 100, and the self-locking devices 5 at the left and right braking handrails 1 have the same structure, so the present embodiment will be described by taking the self-locking device 5 disposed at one side as an example. This will be described and illustrated in detail below with reference to fig. 4-6.

As shown in fig. 4 to 6, the self-locking device 5 includes a return elastic member 51, a locking element 52 and a limiting element 53. Wherein, the return elastic member 51 and the locking element 52 together form a limit return mechanism. In the preferred embodiment, the return elastic member 51 is a torsion spring. The return elastic member 51 and the locking member 52 are fixed to the brake handle 1 by bolts 54. More specifically, the return elastic member 51 is fixed on the handle 6, the handle 6 is provided with a protrusion 61, the return elastic member 51 is connected to the handle 6 through the protrusion 61, that is, the return elastic member 51 is sleeved on the protrusion 61, then the locking element 52 is sleeved on the torsion spring 51, and finally the set of limit return mechanisms is fixed on the handle 1 by the bolt 54.

The locking element 52 is a thin sheet-shaped integrated structure, and includes a head 521, a locking portion 522 and a position control portion 523. A round hole 524 is formed in the head 521 for the bolt 54 to pass through, and the return elastic member 51 is clamped between the head 521 and the brake armrest 1. The locking portion 522 includes a stepped portion 525 formed at an edge thereof and a sector-shaped rotating portion 526 formed above the head 521. The position control portion 523 is disposed below the locking element 52 and is substantially perpendicular to the step portion 525. Meanwhile, the position of the position control portion 523 is located below the handlebar 6, and is used for abutting against the handlebar 6 in a parking and parking state to realize the release of the hand.

The limiting element 53 includes a first limiting block 531 and a second limiting block 532, the first limiting block 531 is disposed on a side of the handle 6 of the brake armrest 1 away from the switch 4 compared to the second limiting block 532, and the first limiting block 531 is configured to cooperate with the locking portion 522 of the locking element 52 to limit the locking portion 522. The second stopper 532 is disposed beside the head 521 of the locking member 52 and cooperates with the fan-shaped rotating portion 526 of the locking member 52 to limit the rotating range of the fan-shaped rotating portion 526, so as to prevent the locking member 52 from over-rotating when returning to the original position. The return rotation tendency of the sector-shaped rotation portion 526 is provided by the return elastic member 51, and when the locking member 52 is disengaged from the first stopper 531, the locking member 52 is automatically returned under the action of the return elastic member 51.

The first stopper 531 is located on the right side and the second stopper 532 is located on the left side as viewed from the side of the lawnmower 100, while the first stopper 531 is located higher than the second stopper 532 as viewed in the height direction. When the vehicle needs to be parked and stopped, an operator firstly presses the handle 6 to lock the motor, secondly, the operator can upwards stir the locking element 52 by hands, the step portion 525 on the locking element 52 rotates around the center line of the circular hole 524, after the step portion 525 rotates to a certain position, the step portion 525 is matched with the first limiting block 531, the matching position is a first position, in the first position, the control portion 523 abuts against the handle 6, preferably, the upper end face of the control portion 523 is matched with the lower surface of the handle 6, the locking element 52 is interlocked with the handle 6, at this moment, the operator loosens the handle 6, and the handle 6 can be always fixed at the position, so that the locking of the handle 6 is realized.

Preferably, the latch element 52 may be provided with a plurality of steps 525, so that the latch element 52 can be interlocked with the handle 6 when the handle 6 is pressed to different positions. Also preferably, the surface of the stepped portion 525 cooperating with the first limiting block 531 in this embodiment is an inclined surface, and the side of the first limiting block 531 contacting with the stepped portion 525 is also an inclined surface, so that the limitation of the first limiting block 531 on the locking element 52 is more reliable. When the parking and parking state needs to be restored to the starting state, the handle 6 is lightly grasped, the interlocking between the locking element 52 and the handle 6 can be released, and at the moment, under the action of the return elastic member 51, the step portion 525 of the locking element 52 is disengaged from the first limiting block 531, and the locking element returns to the second position from the first position. In the second position, the sector shaped turning portion 526 and the second stopper 532 are engaged with each other.

In the preferred embodiment, the switch 4 is a microswitch. The microswitch 4 is always in a pressed/disconnected state, and when the brake handle 6 moves, the switch 4 gives a parking and parking signal to the controller. As can be seen from the above description, the locking element 52 of the present invention can rotate relative to the limiting element 53. In parking and parking state, the locking element 52 cooperates in a first position with the limit element 53 to limit the movement of the handle 6 so as to keep the switch 4 engaged, with the release of the hand being obtained; when the parking and parking state is changed into the starting state, the locking element 52 returns to the second position under the pulling force of the return elastic member 51 and is limited by the limiting element 53 at the second position, and the locking element 52 releases the locking of the handle 6.

The utility model discloses a hand propelled electric tool makes operator's hand can leave hand (hold) 6 through setting up self-lock device 5, does not need to grip for a long time, and the operation is simpler, convenient, effective.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a hand propelled electric tool, includes the frame, be used for supporting the walking wheel of frame, be used for the motor of road wheel of driving, be used for with the drive power transmission of motor to the transmission of walking wheel and be used for the brake equipment of road wheel of braking, the frame is equipped with the hand (hold), brake equipment include with act as go-between that the hand (hold) is connected, in order to drive brake equipment action under the action of hand (hold), its characterized in that: the handle is characterized by also comprising a self-locking device for locking the handle; the self-locking device comprises a locking element which is rotatably connected to the rack, a limiting element used for limiting the locking element and a return elastic piece driving the locking element to automatically reset, and the locking element is provided with a position control part capable of abutting against the handle.

2. The hand propelled power tool of claim 1, wherein: in the parking and parking state, the locking element is matched with the limiting element at the first position to limit the movement of the handle, and the release of the hand is realized; when the parking and parking state is changed into the starting state, the locking element returns to the second position under the pulling force of the return elastic piece, and is limited by the limiting element at the second position.

3. The hand propelled power tool of claim 2, wherein: the lock catch element is provided with a lock catch part, when the self-locking device locks the handle, the lock catch part is matched with the limiting element, and the position control part is matched with the handle.

4. The hand propelled power tool of claim 3, wherein: the limiting element comprises a first limiting block and a second limiting block, and the limiting element is arranged on the same side of the rack.

5. The hand propelled power tool of claim 4, wherein: a step part is formed on the lock catch part, and when the handle is locked by the self-locking device, the step part is matched with the first limiting block.

6. The hand propelled power tool of claim 5, wherein: the return elastic piece is clamped between the locking element and the handle.

7. The hand propelled power tool of claim 6, wherein: the locking element further comprises a head, the locking part further comprises a sector rotating part, and the sector rotating part is formed at the top of the head and can be matched with the second limiting block to limit the resetting movement of the locking element.

8. The hand propelled power tool of claim 6, wherein: the return elastic piece is a torsion spring.

9. The hand propelled power tool of claim 1, wherein: the electric bicycle further comprises a controller and a switch which can be triggered by the handle, wherein the controller is connected with the switch and the motor to correspondingly control the motor to act.

10. The hand propelled power tool of claim 1, wherein: the hand-push type electric tool is a mower.