CN115039562A - Hand-push type power tool - Google Patents

Abstract

The invention provides a hand-push type power tool, comprising: a main body; a traveling wheel rotatably mounted to the main body and supporting the main body; a working element mounted to the main body; the walking motor is used for driving the walking wheels to rotate; the working motor is used for driving the working element to operate; the armrest frame is connected to the main body, and a handle is arranged at the end part of the armrest frame; a control trigger including a traveling trigger for opening and closing the traveling motor and a working trigger for opening and closing the working motor; the walking trigger with in the work trigger one set up in the front side or the rear side of handle, another set up in the left side or the right side of handle, the walking trigger is to being close to the motion of handle direction starts the walking motor, the work trigger is to being close to the motion of handle direction starts the work motor.

Description

Hand-push type power tool

Technical Field

The invention relates to the field of power tools, in particular to a mower.

Background

At present, power tools such as lawn mowers have been widely used in life. Lawn mowers generally comprise a main body portion, which generally mounts wheels and a working cutter, and a handle portion, which mounts a walking trigger for controlling the rotation of the wheels and a working trigger for controlling the operation of the working cutter, respectively. The user can selectively start the trigger according to needs while holding the handle to push the mower to walk to control the mower to run. In order to ensure the safety of a user and avoid accidental injury to the user in the using process of the mower, the walking trigger and the working trigger of the mower are usually required to be pressed for a long time in the using process, but the existing mower is inconvenient for the user to operate the walking trigger and start the trigger while holding the handle.

Disclosure of Invention

In order to solve the above problems, the present invention provides a hand-push type power tool, which is convenient for a user to hold a handle and operate a control trigger with one hand.

In order to achieve one of the above objects, an embodiment of the present invention provides a hand-push type power tool, including:

a main body;

a traveling wheel rotatably mounted to the main body and supporting the main body;

a working element mounted to the main body;

the walking motor is used for driving the walking wheels to rotate;

the working motor is used for driving the working element to operate;

the armrest frame is connected to the main body, and a handle is arranged at the end part of the armrest frame;

a control trigger including a traveling trigger for opening and closing the traveling motor and a working trigger for opening and closing the working motor;

the walking trigger with in the work trigger one set up in the front side or the rear side of handle, another set up in the left side or the right side of handle, the walking trigger is to being close to the motion of handle direction starts the walking motor, the work trigger is to being close to the motion of handle direction starts the work motor.

As a further improvement of an embodiment of the present invention, a control trigger provided on the front or rear side of the handle is pivotally provided about a first axis, and a control trigger provided on the left or right side of the handle is movably provided along the first axis, which is parallel to the left-right direction.

As a further improvement of an embodiment of the present invention, a distance between a control trigger provided on the left or right side of the handle and the handle is less than 10 cm.

As a further improvement of an embodiment of the invention, the curved shapes of the travel trigger and the working trigger are the same as the curved shape of the handle at the corresponding positions.

As a further improvement of an embodiment of the present invention, the present invention further includes a control switch box disposed on the armrest frame, a control switch is mounted in the control switch box, the control switch includes a travel switch electrically connected to the travel motor to control the opening and closing of the travel motor, and a work switch electrically connected to the work motor to control the opening and closing of the work motor, a control trigger disposed on the front side or the rear side of the handle is pivotally connected to the control switch box through a connecting rod, a control trigger disposed on the left side or the right side of the handle is slidably connected to the control switch box through a sliding rod, and the connecting rod and the sliding rod are used for triggering the corresponding control switch.

As a further improvement of an embodiment of the present invention, the handle includes a left handle and a right handle, the travel trigger includes a left travel trigger and a right travel trigger, the travel switch is triggered by pressing any one of the travel trigger and the right travel trigger, the work trigger includes a left work trigger and a right work trigger, the work switch is triggered by pressing any one of the left work trigger and the right work trigger, and the left handle and the right handle, the left travel trigger and the right travel trigger, and the left work trigger and the right work trigger are all symmetrical with respect to the same plane.

As a further improvement of an embodiment of the present invention, the handle and the armrest frame are disposed at an angle, the left travel trigger is disposed on the right side of the left handle, the right travel trigger is disposed on the left side of the right handle, the left working trigger is disposed on the front side of the left handle, the right working trigger is disposed on the front side of the right handle, the left travel trigger moves towards one side of the left handle or the right travel trigger moves towards one side of the right handle to trigger the travel switch, and the left working trigger or the right working trigger rotates towards one side of the handle along the first axis to trigger the working switch.

As a further improvement of an embodiment of the present invention, the armrest frame includes a left push rod and a right push rod, the left handle is connected to the left push rod and is disposed at an angle to the left push rod, the right handle is connected to the right push rod and is disposed at an angle to the right push rod, the connecting rod is located above the left push rod and the right push rod, a curved shape of the left working trigger is the same as a curved shape of the left handle at a corresponding position, and a curved shape of the right working trigger is the same as a curved shape of the right handle at a corresponding position.

As a further improvement of an embodiment of the present invention, the sliding rod includes a left sliding rod connected to the left travel trigger and a right sliding rod connected to the right travel trigger, a travel trigger device is disposed in the control switch mounting box, the left sliding rod moves to the left or the right sliding rod moves to the right to drive the travel trigger device to trigger the travel switch, the left sliding rod and the right sliding rod are both located between the left push rod and the right push rod, the left travel trigger has a shape identical to that of a left handle at a corresponding position, and the right travel trigger has a shape identical to that of a right handle at a corresponding position.

As a further improvement of an embodiment of the present invention, the walking trigger device includes a swinging trigger block, the swinging trigger block is pivotally mounted in the control switch box along a second axis, the second axis is perpendicular to the first axis, the swinging trigger block is provided with a trigger protrusion for triggering the walking switch, a left connecting portion engaged with the left sliding rod, and a right connecting portion engaged with the right sliding rod, the left connecting portion and the right connecting portion are located at two opposite sides of the second axis, the left sliding rod moves to the left side or the right sliding rod moves to the right side, and the swinging trigger block is driven to rotate around the second axis in the same direction, so that the trigger protrusion presses against and triggers the walking switch.

As a further improvement of an embodiment of the present invention, a torsion spring is mounted on the pivot shaft of the swing trigger block.

As a further improvement of an embodiment of the present invention, the left working trigger and the right working trigger are both connected to the connecting rod, the hand-push power tool further includes a safety button slidably mounted in the control switch box along a direction perpendicular to the first axis, a slider is mounted in the control switch box, a radially extending shift lever is disposed on a circumferential surface of the connecting rod, the safety button is used to drive the slider to move to an unlocking position where the slider contacts with the shift lever, and the connecting rod rotates to drive the shift lever to press so as to drive the slider to move to the pressing position and trigger the working switch.

As a further improvement of an embodiment of the present invention, a spring is further installed in the control switch box, the working switch and the spring are arranged in parallel from left to right, the slider has an inclined surface, the connecting rod drives the slider to slide, the slider compresses the spring, and the inclined surface presses the working switch to trigger the working switch.

As a further improvement of an embodiment of the present invention, the safety button is equally distant from the left handle and the right handle.

According to the hand-push type power tool provided by the invention, the walking trigger for controlling the walking wheel to run and the working trigger for controlling the working element to run are respectively arranged at two adjacent sides of the handle, and can be controlled to move towards the handle direction to open the corresponding motor by applying force towards the handle direction, so that the hand-push type power tool is convenient for a user to operate with one hand.

Drawings

FIG. 1 is a schematic view of a hand-propelled power tool according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of a handle of the hand propelled power tool of FIG. 1;

FIG. 3 is another schematic view of the handle portion shown in FIG. 2;

FIG. 4 is a partial schematic view of the handle portion shown in FIG. 3;

FIG. 5 is a further schematic view of the handle portion shown in FIG. 3;

fig. 6 is a partial cross-sectional view of the handle shown in fig. 5.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides a walk behind power tool 10, and the walk behind power tool 10 may be a lawn mower. The hand-push type power tool 10 includes a main body 11, road wheels 12 and working elements, the road wheels 12 are mounted on the main body 11 and are used for supporting the main body 11, and the working elements may be functional accessories such as cutters for completing the work of the power tool 10. The hand-push type power tool 10 further includes a handle frame 40, the handle frame 40 is connected to the main body 11, and a handle 50 may be disposed at an end of the handle frame 40, and the handle 50 may be held by a user to push the hand-push type power tool 10 to operate.

The walk behind power tool 10 may also include a motor and a battery pack for supplying power to the motor. The motors may include a travel motor that may be used to drive the travel wheels 12 to rotate and a work motor that may be used to drive the work elements to operate. The hand-push type power tool 10 further includes a control trigger, which may be used to turn on and off the motor, and may include a travel trigger 30 for turning on and off the travel motor and a work trigger 20 for turning on and off the work motor.

In an embodiment of the present invention, the walking trigger 30 and the working trigger 20 are respectively disposed at two adjacent sides of the handle 50, one of the walking trigger 30 and the working trigger 20 may be disposed at the front side or the rear side of the handle 50, and the other may be disposed at the left side or the right side of the handle 50, and when the user presses the walking trigger 30, the walking motor may be activated to drive the walking trigger 30 to move toward the handle 50, so as to drive the walking wheel 12 to rotate. The user presses the working trigger 20, and the working trigger 20 is driven to move toward the handle 50 to start the working motor, so as to drive the working element to operate, and perform mowing and other tasks.

In the present embodiment, when the user uses the hand-push type power tool 10, the left-hand side of the user is the left side, the right-hand side of the user is the right side, and the front-rear direction of the handle 50 is perpendicular to the left-right direction, and based on the difference in the structure of the handle 50, if the handle 50 is disposed in the vertical direction during use, the side of the handle 50 away from the user may be the front side, the side of the handle 50 facing the user may be the rear side, and of course, the side of the handle 50 facing the ground may be the rear side, and the side of the handle 50 away from the ground may be the front side.

One of the walking trigger 30 and the working trigger 20 is arranged at the front side or the rear side of the handle 50, and the other is arranged at the left side or the right side of the handle 50, it can be understood that the walking trigger 30 and the working trigger 20 are arranged at two adjacent sides of the handle 50, in the using process, a user can hold the handle 50 with one hand to apply force to the walking trigger 30 or the working trigger 20, and drive the walking trigger 30 or the working trigger 20 to move towards the handle 50 to control the walking motor or the working motor to be started, the moving directions of the walking trigger 30 and the working trigger 20 are basically vertical, the user can easily apply force to the walking trigger 30 and the working trigger 20 with one hand at the same time, and any control trigger can be released selectively to close the corresponding motor.

Further, in an embodiment of the present invention, the control trigger provided on the front or rear side of the handle 50 is pivotally provided about a first axis, and the control trigger provided on the left or right side of the handle 50 is movably provided along the first axis, which is parallel to the left-right direction.

Referring to fig. 2, in the present embodiment, the extension direction of the control trigger disposed at the front side or the rear side of the handle 50 may be perpendicular to the first axis, the control trigger disposed at the left side or the right side of the handle 50 may be disposed substantially parallel to the handle 50, and a user may hold the handle 50 with one hand and apply force to the control trigger disposed at the left side or the right side of the handle 50 to move the control trigger toward the handle 50 along the first axis. In this manner, a user can easily grip the handle with one hand, using the thumb to control the left or right hand control trigger of the grip 50, and using the palm or other four finger control trigger on the front or back side of the grip 50.

Further, in one embodiment of the present invention, the distance between the control trigger disposed on the left or right side of the handle 50 and the handle 50 is less than 10 cm.

In the embodiment, the distance between the middle part of the control trigger arranged at the front side or the rear side of the handle 50 and the handle 50 can be less than 20cm, so that the control trigger can be operated by a single hand of a user, and in the using process, the user can operate the control trigger while holding the handle 50 without pressing the trigger after releasing the handle 50 or assisting to press the trigger by another hand.

Further, referring to fig. 2, in an embodiment of the present invention, the curved shapes of the walking trigger 30 and the working trigger 20 are the same as the curved shape of the handle 50 at the corresponding position, and the top end of the control trigger at the left side or the right side of the handle 50 is lower than the top end of the control trigger at the front side or the rear side of the handle 50, so that when the user does not need to activate the motor corresponding to the control trigger at the left side or the right side of the handle 50, the control trigger at the left side or the right side of the handle 50 does not obstruct the hand of the user, and the user can conveniently and flexibly manipulate the handle 50 and other control triggers.

In the present embodiment, the curved shapes of the travel trigger 30, the work trigger 20, and the handle 50 may be extension curves of the travel trigger 30, the work trigger 20, and the handle 50, and the extension lengths of the travel trigger 30 and the work trigger 20 may be shorter than the handle 50 corresponding to only partial positions of the handle 50.

The control trigger provided on the left or right side of the handle 50 may be provided in parallel with the handle 50, the control trigger provided on the front or rear side of the handle 50 may have the same curved shape as the handle 50, and the user may press the control trigger to be approximately parallel with the handle 50. So, can promote the pleasing to the eye degree of outward appearance, and the user of being more convenient for operates the control trigger when holding the handle.

In this embodiment, the cross section of the control trigger may be designed according to the curve shape of the handle 50, the cross section of the control trigger may be matched with the cross section of the handle 50 at the corresponding position, and when the control motor is started, the control trigger may be pressed to be attached to the handle 50. If the cross-section of the handle 50 is circular or rounded, the cross-section of the control trigger may be curved to match the shape of the handle 50, so that the control trigger may be engaged with the handle 50 even if the user presses the control trigger for a long time during use, thereby reducing the user's fatigue.

Further, in an embodiment of the present invention, the hand-push type power tool 10 further includes a control switch box 80 disposed on the armrest frame 40, a control switch is installed in the control switch box 80, the control switch may be a micro-control switch, the control switch may be electrically connected to a motor, and a mechanical movement of the control trigger may trigger the control switch to turn on the corresponding motor. The control switch can include a walking switch 33 electrically connected with the walking motor, the walking switch 33 is used for controlling the on-off of the walking motor, the control switch can also include a working switch 23 electrically connected with the working motor, the working switch 23 is used for controlling the on-off of the working motor, a user can trigger the walking switch 33 to turn on the walking motor by pulling the walking trigger 30 towards the handle 50, and can trigger the working switch 23 to turn on the working motor by pulling the working trigger 20 towards the handle 50.

The control trigger provided on the front or rear side of the handle 50 may be slidably connected to the control switch box 80 through a sliding rod, and the control trigger provided on the left or right side of the handle 50 may be slidably connected to the control switch box 80 through a sliding rod. In this embodiment, one end of the connecting rod 60 is connected to the control trigger, and a part of the connecting rod is disposed in the control switch box 80 for triggering the corresponding control switch, and the corresponding control trigger is driven to rotate to drive the connecting rod 60 to rotate, and the connecting rod 60 rotates to trigger the corresponding control switch. One end of the sliding rod 70 is connected with the control trigger, and part of the sliding rod is arranged in the control switch box 80, and the sliding rod 70 can be driven to move relative to the control switch box 80 and trigger the corresponding control switch by moving the corresponding control trigger along the left-right direction.

In the present embodiment, the length directions of the connecting rod 60 and the sliding rod 70 are both parallel to the left-right direction, and the control trigger may be bent and extended from the end of the connecting rod 60 or the sliding rod along the curved shape of the handle 50 at the corresponding position. The connecting rod 60 and the sliding rod 70 can both be placed above the armrest frame 40 and the curved shape of the control trigger can partially correspond to the shape of the armrest frame 40. In the design process, the shape of the handle 50 can be designed according to human engineering, and then the shape of the control trigger can be designed according to the shape of the handle 50, so that the shape and the structure of the control trigger can meet the requirement of human engineering, and the control trigger is more suitable for the use and operation of a user.

Further, in an embodiment of the present invention, the handle 50 may include a left handle 51 and a right handle 52, the control trigger may include a left control trigger and a right control trigger, the left control trigger may include a left travel trigger 31 and a left work trigger 21, the left control trigger may be installed at the left handle 51, the right control trigger may include a right travel trigger 32 and a right work trigger 22, the right control trigger may be installed at the right handle 52, and any one of the left control trigger and the right control trigger may independently turn on the corresponding motor while releasing the left control trigger and the right control trigger may turn off the corresponding motor.

During use, the user can hold the left handle 51 and the right handle 52 with both hands to push the hand-push type power tool 10, and the user can selectively use the left hand to operate the left control trigger or the right hand to operate the right control trigger to drive the motor to operate according to the use habit of the user.

In this embodiment, the travel trigger 30 may include a left travel trigger 31 and a right travel trigger 32, and the work trigger 20 may include a left work trigger 21 and a right work trigger 22, where any one of the left travel trigger 31 and the right travel trigger 32 may independently control the corresponding travel motor to be turned on, and any one of the left work trigger 21 and the right work trigger 22 may independently control the corresponding work motor to be turned on. One of the left travel trigger 31 and the left working trigger 21 may be disposed at a front or rear side of the handle 50 and the other may be disposed at a left or right side of the handle 50, and one of the right travel trigger 32 and the right working trigger 22 may be disposed at a front or rear side of the handle 50 and the other may be disposed at a left or right side of the handle 50.

Here, the left and right grips 51 and 52 may be symmetrically disposed with respect to a plane between the left and right grips 51 and 52, the left and right travel triggers 31 and 32 may be symmetrically disposed with respect to the plane, and the same left and right working triggers 21 and 22 may be symmetrically disposed with respect to the plane.

Thus, the user can use any habit to independently operate the control trigger by hands to control the walking motor and the working motor.

Further, in an embodiment of the present invention, the handle 50 is disposed at an angle to the handle frame 40, the handle 50 may extend upward from an end of the handle frame 40, one of the left travel trigger 31 and the left working trigger 21 may be disposed at a right side of the left handle 51, one of the right travel trigger 32 and the right working trigger 22 may be disposed at a left side of the right handle 52, the other of the left travel trigger 31 and the left working trigger 21 may be disposed at a front side of the left handle 51, and the other of the right travel trigger 32 and the right working trigger 22 may be disposed at a front side of the right handle 52.

In the present embodiment, the handle frame 40 may include a left push rod 41 and a right push rod 42 connected to both sides of the body, a left handle 51 may be connected to the left push rod 41 and extend upward from an end of the left push rod 41, and a right handle 52 may be connected to the right push rod 42 and extend upward from an end of the right push rod 42.

The left handle 51 may be disposed at an angle with the left push rod 41, the right handle 52 may be disposed at an angle with the right push rod 42, an included angle between the left push rod 41 and the right push rod 42 and a horizontal direction may be an acute angle, and an included angle formed by the left handle 51 and the left push rod 41 is equal to an included angle formed by the right handle 52 and the right push rod 42, which may be greater than or equal to 90 °. In this way, the left handle 51 and the right handle 52 may form a certain angle with the vertical direction, and the left handle 51 and the right handle 52 respectively extend from the end portions of the left push rod 41 and the right push rod 42 to the long direction and incline to the main body side. The hand-push type power tool 10 may be positioned at the front side of the user and inclined with respect to the front side of the user when the user uses the hand-push type power tool, thereby making it easier for the user to grip the handle 50 and apply the pushing force.

When a user holds the handle 50, the left thumb is located on the right side of the left handle 51, the right thumb is located on the left side of the right handle 52, and the rest four fingers are bent from the front side of the handle 50 to the right side or the left side of the handle 50, so that the left control trigger is arranged on the front side and the right side of the left handle 51, the right control trigger is arranged on the front side and the left side of the right handle 52, the user can easily and flexibly control the control trigger on the left side or the right side of the handle 50 through the thumb while holding the handle 50, and meanwhile, the control trigger on the front side of the handle 50 is controlled through the rest four fingers.

In an embodiment of the present invention, the left and right working triggers 21 and 22 may be disposed at front sides of the left and right grips 51 and 52, respectively, the left travel trigger 31 may be disposed at a right side of the left grip 51, the right travel trigger 32 may be disposed at a left side of the right grip 52, and moving the left travel trigger 31 to the left side or moving the right travel trigger 32 to the right side may turn on the travel motor.

During operation of the power tool 10, it is necessary to keep the working motor on by pressing the working trigger 20 for a long time, so as to keep the working element running continuously to perform the corresponding work. It will be appreciated that the use of the work trigger 20 is relatively long and the work trigger 20 drives the working element to operate, so that the user's flexibility in operating the work trigger 20 needs to be ensured in order to avoid accidental injury to the user by the working element. Therefore, the operation trigger 20 is provided on the front side of the grip 50, so that the user can operate the trigger more easily, and the user's fatigue can be reduced and the control flexibility can be improved by applying force with the palm and the four fingers.

Referring to fig. 3, in the present embodiment, the left and right working triggers 21 and 22 may be connected to the connection rod 60, the connection rod 60 may pass through the control switch box 80, both ends of the connection rod are connected to the left and right working triggers 21 and 22, respectively, and rotating any one of the left and right working triggers 21 and 22 may drive the connection rod 60 to rotate to trigger the working switch 23. The connecting rod 60 can be located above the left push rod 41 and the right push rod 42, the connecting point of the left working trigger 21 and the connecting rod 60 can be located above the left push rod 41, the connecting point of the right working trigger 22 and the connecting rod 60 can be located above the right push rod 42, the shape of the left working trigger 21 can be the same as that of the left push rod 41 and the left handle 51 at the corresponding position, and the shape of the right working trigger 22 can be the same as that of the right push rod 42 and the right handle 52 at the corresponding position, so that the bottom ends of the left working trigger 21 and the right working trigger 22 are completely located outside the left handle 51 and the right handle 52, the operation is more convenient to hold in the using process, when the motors are turned on by operating the left working trigger 21 and the right working trigger 22, the fit degree between the working trigger 20 and the handle 50 is higher, and the comfort is strong.

The sliding rod 70 may include a left sliding rod 71 connected to the left travel trigger 31 and a right sliding rod 72 connected to the right travel trigger 32, the extending directions of the left sliding rod 71 and the right sliding rod 72 may be parallel to the first axial direction, and a travel trigger device for triggering the travel switch 33 may be further provided in the control switch box 80. The user operates the left travel trigger 31 to drive the left sliding rod 71 to move to the left, the left sliding rod 71 can drive the travel trigger device to trigger the travel switch 33, or also operates the right travel trigger 32 to drive the right sliding rod 72 to move to the right, and the right sliding rod 72 can also drive the travel trigger device to trigger the travel switch 33.

The left travel trigger 31 and the left slide bar 71 may be provided independently of the right travel trigger 32 and the right slide bar 72. Both the left and right slide bars 71 and 72 may be located between the left and right push bars 41 and 42, a connection point of the left travel trigger 31 and the left slide bar 71 may be located at the right side of the left push bar 41, a connection point of the right travel trigger 32 and the right slide bar 72 may be located at the left side of the right push bar 42, the left travel trigger 31 may extend from an end of the left slide bar 71 along a curved shape of the left push bar 41 and the left grip 51 at a corresponding position, and the right travel trigger 32 may extend from an end of the right slide bar 72 along a curved shape of the right push bar 42 and the right grip 52 at a corresponding position. In a state where the travel motor is turned off, the distance between the left travel trigger 31 and the left grip 51 is equal to the distance between the right travel trigger 32 and the right grip 52, and the user can manipulate the left travel trigger 31 or the right travel trigger 32 with hands using any one of the habits.

Further, referring to fig. 3 to 6, in an embodiment of the present invention, the walking trigger device includes a swing trigger block 73, and the swing trigger block 73 may be pivotally installed in the control switch box 80 along a second axis, which is perpendicular to the first axis. The swing trigger block 73 may be disposed at one side of the travel switch 33, and the swing trigger block 73 may be disposed with a trigger protrusion 74, where the trigger protrusion 74 is used to press against and trigger the travel switch 33. The swing trigger block 73 is further provided with a left connecting portion 75 connected with the left sliding rod 71 and a right connecting portion 76 connected with the right sliding rod 72, the left connecting portion 75 and the right connecting portion 76 are located on two opposite sides of the second axis, the left connecting portion 75 and the right connecting portion 76 can be symmetrically arranged relative to the second axis, and the left sliding rod 71 can move towards the left side or the right sliding rod 72 can move towards the right side, so that the swing trigger block 73 can be driven to rotate around the second axis in the same direction to enable the trigger bulge 74 to press and trigger the travel switch 33.

In the present embodiment, the left slide bar 71 and the right slide bar 72 are provided independently of each other, and the left travel trigger 31 or the right travel trigger 32 may be used alone to trigger the travel switch 33, or both hands may be simultaneously operated to press the left travel trigger 31 and the right travel trigger 32 to trigger travel development, and the left travel trigger 31 and the right travel trigger 32 may be operated by both hands simultaneously to reduce the force that needs to be applied by one hand.

The torsional spring can be installed on the pivot shaft of the swing trigger block 73, when the left walking trigger 31 or the right walking trigger 32 is used for driving the swing trigger block 73 to rotate, the torsional spring stores energy, when the left walking trigger 31 and the right walking trigger 32 are simultaneously released by both hands of a user, under the action of elastic force of the torsional spring, the swing trigger block 73 automatically rotates and resets, the left walking trigger 31 and the right walking trigger 32 are simultaneously driven to reset, the control walking motor is closed, the user control is not needed, the automatic swing trigger device is convenient to use, and potential safety hazards can be reduced.

In the present embodiment, the control switch box 80 may include an upper housing 81 and a lower housing 82, the travel switch 33 may be fixedly mounted on the upper housing 81, the pivot shaft 731 of the swing trigger block 73 may be connected to the lower housing 82, the swing trigger block 73 may be located at a lower side of the travel switch 33, the trigger protrusion 74 may be located at a surface of the swing trigger block 73 facing a side of the travel development, and the left and right connection portions 75 and 76 may be disposed at a surface of the swing trigger block 73 facing away from the side of the travel switch 33.

Left connecting portion 75 can be for the convex left side of the surface of self-swing trigger block 73 to connect protrudingly, right connecting portion 76 can be for the convex right side of the surface of swing trigger block 73 to connect protrudingly, the one end of left connecting rod 60 can be connected with left work trigger 21, the other end can be provided with left block arch 77, left block arch 77 can be located left and connect bellied right side, so, to left side pulling left slide bar, left block arch 77 to press left connecting arch to drive swing trigger block 73 anticlockwise rotation. One end of the right connecting rod 60 can be connected with the right working trigger 22, the other end can be provided with a right blocking protrusion 78, the right blocking protrusion 78 is arranged on the left side of the right connecting protrusion, so that the right sliding rod 72 is pulled to the right side, and the right blocking protrusion 78 is pressed against the right connecting protrusion to drive the swing trigger block 73 to rotate anticlockwise.

The trigger protrusion 74 includes a slope having a trajectory in an arc shape centered on the pivot axis of the swing trigger block 73. When the left sliding rod 71 or the right sliding rod 72 drives the swing trigger block 73 to rotate, the inclined surface gradually approaches and presses the travel switch 33 to trigger the travel switch 33.

Further, in one embodiment of the present invention, the power tool 10 further includes a safety button 24 mounted to the control switch box 80. The control switch box 80 is also provided with a slide block 62, and the slide block 62 can press and trigger the working switch 23. The safety button 24 is slidably mounted on the control switch box 80 along a direction perpendicular to the first axis, one end of the safety button 24 is disposed outside the control switch box 80 for being pressed by a user, and the other end of the safety button extends into the control switch box 80 for driving the sliding block 62 to move. A radially extending shift lever 61 may be provided on the circumferential surface of the connecting rod 60.

When the safety button 24 is pressed to move to the unlocking position contacting with the shift lever 61, the left working trigger 21 or the right working trigger 22 is pressed to drive the connecting rod 60 to rotate, so that the shift lever 61 is pressed against the sliding block 62, and the sliding block 62 is driven to move to be pressed against and trigger the working switch 23.

In this embodiment, before the safety switch driving slider 62 moves to the unlocking position, even if the connecting rod 60 rotates, the shift lever 61 does not contact the slider 62, and therefore the slider 62 is not driven to move, and after the safety switch driving slider 62 moves to the unlocking position, the shift lever 61 contacts the slider 62, and when the connecting rod 60 is rotated, the shift lever 61 can abut against the slider 62 and drive the slider to move to the triggering position for triggering the working switch 23.

Therefore, in the using process, a user needs to press the safety button 24 first, and the left working trigger 21 or the right working trigger 22 is pressed to start the working motor to drive the working element to operate, so that the phenomenon that the user mistakenly presses the left working trigger 21 or the right working trigger 22 to cause the working element to operate and injure the user mistakenly can be avoided.

In the first axial direction, the left and right sides of the sliding block 62 are provided with columns 63, and when the sliding block 62 is between the unlocking position and the triggering position of the trigger working switch 23, the connecting rod 60 is rotated, and the shift lever 61 can be pressed against the columns 63 to drive the sliding block 62 to slide.

In the present embodiment, the spring 64 is further mounted in the control switch case 80, and the safety button 24, the slider 62, and the spring 64 are arranged in this order in the sliding direction of the slider. The sliding block 62 and the spring 64 can be installed in the lower shell 82, an installation groove 83 can be formed in the lower shell 82, the sliding block 62, the spring 64 and the operating switch 23 can be installed in the installation groove 83, the sliding block 62 can slide in the installation groove 83, and two ends of the spring 64 can respectively abut against one wall of the sliding block 62 and the installation groove 83. When the safety button 24 is pressed or the connecting rod 60 is rotated to drive the sliding block 62 to slide, the sliding block 62 compresses the spring 64, when the left working trigger 21 and the right working trigger 22 are released by both hands of a user, under the elastic force action of the spring 64, the sliding block 62 moves to the initial position, and simultaneously the left working trigger 21 and the right working trigger 22 are driven to move to the initial position, and the working motor is disconnected.

The tip of slider 62 can be provided with the spliced pole, the spliced pole can be located to the one end of spring 64 cover, the bottom surface of mounting groove 83 can slope the setting, be close to safety button 24 one end and can be higher than and be close to spring 64 one end, the cylinder 63 that acts on mutually with driving lever 61 can set up in slider 62 and be close to safety button 24 one side, when pressing safety button 24, slider 62 can be under the effect of spring 64, it lifts to the trigger position to be provided with cylinder 63 one end for driving lever 61 and cylinder 63 contact. The operating switch 23 may be disposed side by side with the spring 64 in the left and right direction, and the slider 62 may have a slope that presses the operating switch 23 to trigger the operating switch 23 when the slider 62 moves.

In the present embodiment, the safety button 24 may be disposed between the left and right grips 51 and 52, and the distances from the safety button 24 to the left and right grips 51 and 52 may be equal, so that the user can conveniently press the safety button 24 using either one hand.

In the present embodiment, the pivot axis of the working trigger 20, the pivot axis of the swing trigger block 73, and the moving direction of the slider 62 may be perpendicular to each other, the slide lever may be close to the safety button 24 side with respect to the connecting rod 60, the safety button 24 is provided with a long through hole, and the pivot axis 731 of the swing trigger block 73 may be pivotally connected to the lower case 82 through the long through hole of the safety button 24, so that the respective components in the control switch box 80 do not interfere with each other.

The hand-push type power tool 10 provided by the invention has the advantage that a user can operate the working trigger 20 and the walking trigger 30 by any one hand, and the ergonomic design is met.

It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The above detailed description is merely illustrative of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include all equivalent embodiments or modifications within the scope of the present invention without departing from the technical spirit of the present invention.

Claims (14)

1. A hand propelled power tool comprising:

a main body;

a traveling wheel rotatably mounted to the main body and supporting the main body;

a working element mounted to the main body;

the walking motor is used for driving the walking wheels to rotate;

the working motor is used for driving the working element to operate;

the armrest frame is connected to the main body, and a handle is arranged at the end part of the armrest frame;

a control trigger including a traveling trigger for opening and closing the traveling motor and a working trigger for opening and closing the working motor;

the electric bicycle is characterized in that one of the walking trigger and the working trigger is arranged on the front side or the rear side of the handle, the other of the walking trigger and the working trigger is arranged on the left side or the right side of the handle, the walking trigger moves and starts in the direction close to the handle, and the working trigger moves and starts in the direction close to the handle.

2. The hand propelled power tool of claim 1, wherein the control trigger provided on the front or rear side of the handle is pivotally provided about a first axis, and the control trigger provided on the left or right side of the handle is movably provided along the first axis, the first axis being parallel to the left-right direction.

3. The hand propelled power tool of claim 2, wherein a distance between the control trigger disposed on the left or right side of the handle and the handle is less than 10 cm.

4. The hand propelled power tool of claim 3, wherein the curved shapes of the walk trigger and the work trigger are each the same as the curved shape of the handle at the corresponding position.

5. The hand-push type power tool according to claim 4, further comprising a control switch box provided in the handle frame, wherein a control switch is installed in the control switch box, the control switch comprises a travel switch electrically connected to the travel motor to control the opening and closing of the travel motor, and a work switch electrically connected to the work motor to control the opening and closing of the work motor, the control trigger provided on the front side or the rear side of the handle is pivotally connected to the control switch box through a connecting rod, the control trigger provided on the left side or the right side of the handle is slidably connected to the control switch box through a sliding rod, and the connecting rod and the sliding rod are used for triggering the corresponding control switch.

6. The hand propelled power tool of claim 5, wherein the handle comprises a left handle and a right handle, the travel trigger comprises a left travel trigger and a right travel trigger, pressing either of the travel trigger and the right travel trigger triggers the travel switch, the work trigger comprises a left work trigger and a right work trigger, pressing either of the left work trigger and the right work trigger triggers the work switch, the left handle and the right handle, the left travel trigger and the right travel trigger, the left work trigger and the right work trigger are all symmetrical with respect to a same plane.

7. The hand-push type power tool according to claim 6, wherein the handle and the armrest frame are disposed at an angle, the left walking trigger is disposed on the right side of the left handle, the right walking trigger is disposed on the left side of the right handle, the left working trigger is disposed on the front side of the left handle, the right working trigger is disposed on the front side of the right handle, the left walking trigger moves towards one side of the left handle or the right walking trigger moves towards one side of the right handle to trigger the walking switch, and the left working trigger or the right working trigger rotates towards one side of the handle along the first axis to trigger the working switch.

8. The hand propelled power tool of claim 7, wherein the armrest frame includes a left push rod and a right push rod, the left handle is connected to the left push rod and is angularly disposed to the left push rod, the right handle is connected to the right push rod and is angularly disposed to the right push rod, the connecting rod is located above the left push rod and the right push rod, the left working trigger has a curved shape that is the same as the curved shape of the left handle at a corresponding position, and the right working trigger has a curved shape that is the same as the curved shape of the right handle at a corresponding position.

9. The power tool of claim 8, wherein the sliding rod comprises a left sliding rod connected to the left walking trigger and a right sliding rod connected to the right walking trigger, a walking trigger is disposed in the control switch mounting box, the left sliding rod moves to the left or the right sliding rod moves to the right to drive the walking trigger to trigger the walking switch, the left sliding rod and the right sliding rod are both located between the left push rod and the right push rod, the left walking trigger has the same shape as the left handle at the corresponding position, and the right walking trigger has the same shape as the right handle at the corresponding position.

10. The power tool of claim 9, wherein the walking trigger device comprises a swinging trigger block, the swinging trigger block is pivotally mounted in the control switch box along a second axis, the second axis is perpendicular to the first axis, the swinging trigger block is provided with a trigger protrusion for triggering the walking switch, a left connecting portion engaged with the left sliding rod, and a right connecting portion engaged with the right sliding rod, the left connecting portion and the right connecting portion are located on two opposite sides of the second axis, the left sliding rod moves to the left side or the right sliding rod moves to the right side, and the swinging trigger block is driven to rotate around the second axis in the same direction, so that the trigger protrusion presses against and triggers the walking switch.

11. The hand propelled power tool of claim 10, wherein a torsion spring is mounted on the pivot shaft of the swing trigger block.

12. The hand-push type power tool according to claim 8, wherein the left working trigger and the right working trigger are both connected to the connecting rod, the hand-push type power tool further comprises a safety button slidably mounted in the control switch box along a direction perpendicular to the first axis, a slider is mounted in the control switch box, a radially extending shift lever is disposed on a circumferential surface of the connecting rod, the safety button is used for driving the slider to move to an unlocking position where the slider contacts with the shift lever, and the connecting rod rotates to drive the shift lever to abut against so as to drive the slider to move to abut against and trigger the working switch.

13. The hand-push type power tool according to claim 12, wherein a spring is further installed in the control switch box, the working switch is juxtaposed to the spring in a left-right direction, the slider has an inclined surface, the connecting rod drives the slider to slide, the slider compresses the spring, and the inclined surface presses the working switch to trigger the working switch.

14. The hand propelled power tool of claim 12, wherein said safety button is equidistant from said left handle and said right handle.

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