CN107988983B

CN107988983B - Handle assembly and electric tool with same

Info

Publication number: CN107988983B
Application number: CN201711487462.0A
Authority: CN
Inventors: 王朝仪
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2024-01-02
Anticipated expiration: 2037-12-29
Also published as: CN107988983A

Abstract

The invention provides a handle assembly and a power tool with the same. The handle assembly comprises a push rod, a shell arranged on the push rod, a pull rod arranged on the shell, a starting switch and a triggering assembly, wherein the starting switch and the triggering assembly are accommodated in the shell; the pull rod is provided with a handle and a supporting arm; the trigger component comprises a button, a main rack matched with the button, a gear matched with the main rack and a secondary rack matched with the gear; when the button is pressed, the main rack is displaced under the action of the button, so that the gear is driven to rotate, and the auxiliary rack is driven to displace, so that the auxiliary rack moves to a position opposite to the starting switch; and then the pull rod is pulled up, so that the supporting arm rotates and supports the auxiliary rack, and the auxiliary rack supports the starting switch. According to the invention, the handle assembly starts the motor through the button and the pull rod to form a double-trigger structure, so that the motor can be effectively prevented from being started by a user due to misoperation, and further the occurrence of safety accidents is effectively avoided.

Description

Handle assembly and electric tool with same

Technical Field

The present invention relates to a handle assembly and an electric tool having the same, and more particularly, to a snowplow or a grass pusher having the same.

Background

The existing garden electric tool is usually provided with an operating handle assembly, so that the control device of the control button is installed on the operating handle assembly to further facilitate the opening and closing of the garden electric tool when the garden electric tool is convenient to move.

The existing garden electric tools adopt a general control switch to control the opening and closing of the garden electric tools, and meanwhile, because the control switch is fixedly arranged on the handle, when an operator pushes the garden electric tools to move, if the control switch is touched carelessly, the garden electric tools can be closed or started abnormally, particularly in the garden electric tools with wider application ranges such as grass pushing machines, snowplows and the like, safety accidents are easy to occur due to abnormal closing and starting. Therefore, how to improve the use safety of the garden power tool by providing the operation handle assembly becomes an important design point of the garden power tool/power tool.

In view of the above, it is desirable to provide a new handle assembly that solves the above-described problems.

Disclosure of Invention

The invention aims to provide a handle assembly and an electric tool with the same, wherein the handle assembly starts a motor through a double-trigger structure of a button and a pull rod, so that the motor can be effectively prevented from being started by a user due to misoperation, and further safety accidents are effectively avoided.

To achieve the above object, the present invention provides a handle assembly comprising: the push rod is provided with a handle and an installation arm which is formed by bending and extending from one end of the handle; the shell is arranged on the push rod and provided with a plurality of side walls, and the side walls are surrounded to form a containing cavity; the pull rod is pivotally mounted on the shell and comprises a handle positioned outside the accommodating cavity and a supporting arm positioned inside the accommodating cavity; the starting switch is positioned in the accommodating cavity and used for starting the motor; the triggering component comprises a button, a main rack matched with the button, a gear matched with the main rack and a secondary rack matched with the gear; when the button is pressed, the main rack is displaced under the action of the button, so that the gear is driven to rotate, and the auxiliary rack is driven to displace, so that the auxiliary rack moves to the position opposite to the starting switch; and then pulling the handle to enable the abutting arm to rotate and abut against the auxiliary rack, so that the auxiliary rack abuts against the starting switch, and the motor is started.

As a further improvement of the invention, the button and the main rack are integrally formed.

As a further development of the invention, the push button is further provided with a secondary elastic element and a positioning member defining the secondary elastic element; when the button is pressed, the auxiliary elastic element is elastically deformed; when the button is released, the button is reset under the action of the auxiliary elastic element, so that the main rack is driven to reset.

As a further improvement of the invention, the button and the main rack are separately arranged.

As a further development of the invention, the trigger assembly also has a main elastic element cooperating with the main rack; when the button is pressed, the button pushes the main rack to move, so that the main elastic element is elastically deformed under the action of the main rack; when the button is released, the main toothed bar is reset under the action of the main elastic element, so that the button is driven to reset.

As a further improvement of the invention, the gear comprises a wheel axle and a main gear and a secondary gear which are arranged on the wheel axle; the main gear is matched with the main rack, and the auxiliary gear is matched with the auxiliary rack.

As a further improvement of the present invention, the number of teeth of the main gear is smaller than the number of teeth of the sub gear.

As a further improvement of the invention, the handle assembly is also provided with an indicator light to alert the user to the current status.

To achieve the above object, the present invention provides a power tool including the aforementioned handle assembly.

As a further improvement of the invention, the electric tool is a snowplow or a grass pusher.

The beneficial effects of the invention are as follows: the handle component of the invention forms a double trigger structure to start the motor by arranging the button and the pull rod corresponding to the button; the safety of the electric tool is improved, so that the motor can be effectively prevented from being started by a user due to misoperation, and further safety accidents are effectively avoided.

Drawings

Fig. 1 is a schematic perspective view of a handle assembly of the present invention.

Fig. 2 is a schematic view of the internal structure of the handle assembly of fig. 1.

Fig. 3 is an enlarged partial schematic view of fig. 2.

Fig. 4 is an enlarged partial schematic view of another angle of fig. 2.

Fig. 5 is a schematic view of another angle of fig. 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. Examples of these preferred embodiments are illustrated in the accompanying drawings, the embodiments of the invention shown in the drawings and described in accordance with the drawings are merely exemplary, and the invention is not limited to these embodiments.

Referring to fig. 1 and 2, the handle assembly 100 of the present invention includes a push rod 10, a housing 20 mounted on the push rod 10, a pull rod 30 mounted on the housing 20, a start switch 40 accommodated in the housing 20, a trigger assembly 50 and an indicator lamp 60, wherein the indicator lamp 60 is used for reminding a user of the current state.

The push rod 10 includes a handle 11 and a mounting arm 12 bent and extended from one end of the handle 11. The housing 20 is mounted on the mounting arm 12, and includes a plurality of side walls 21, and the side walls 21 define a housing cavity 22. Referring to fig. 2, the pull rod 30 is pivotally mounted on the housing 20, and includes a handle 31 located outside the accommodating cavity 22 and a holding arm 32 located inside the accommodating cavity 22. When the handle 31 is pulled up, the holding arm 32 is not in contact with the start switch 40.

Referring to fig. 3 to 5 in combination with fig. 1, the start switch 40 is located in the accommodating cavity 22 for starting the motor. The trigger assembly 50 includes a button 51, a main rack 52 engaged with the button 51, a gear 53 engaged with the main rack 52, a sub-rack 54 engaged with the gear 53, a main elastic member 55 engaged with the main rack 52, and a fixing member 56 for fixing the gear 53 in the receiving chamber 22. A mounting groove 211 and a sliding groove 212 are formed in one side of the side wall 21 facing the accommodating cavity 22, and the main rack 52 and the main elastic element 55 are mounted in the mounting groove 211; the secondary rack 54 is slidably mounted within the chute 212. The button 51 is located partially within the receiving chamber 22 and partially outside the receiving chamber 22. In the present embodiment, the button 51 and the main rack 52 are integrally formed, but in other embodiments, the button 51 and the main rack 52 may be separately provided. The button 51 is provided with a secondary elastic element 511 and a positioning member 512 defining the secondary elastic element 511.

When the button 51 is pressed, the sub elastic member 511 is elastically deformed by the button 51; when the button 51 is released, the button 51 is reset under the action of the auxiliary elastic element 511, so as to drive the main rack 52 to reset.

The gear 53 includes an axle 531, and a main gear 532 and a sub gear 533 mounted on the axle 531; the gear 53 is fixedly connected to the housing cavity 22 by a fixing member 56, specifically, the fixing member 56 is provided with 2 fixing members along the extending direction of the axle 531, and includes a supporting portion 561 formed by protruding from the side wall 21 into the housing cavity 22, and a holding portion 562 provided corresponding to the supporting portion 561, and a through hole is formed between the supporting portion 561 and the holding portion 562; the wheel axle 531 is received at both ends thereof in the through hole and is rotatable therein.

The extending direction of the main rack 52 is perpendicular to the extending direction of the auxiliary rack 54; the main gear 532 is engaged with the main rack 52, and the sub gear 533 is engaged with the sub rack 54. The number of teeth of the main gear 532 is smaller than the number of teeth of the sub gear 533, so that the moving speed of the main rack 52 is smaller than the moving speed of the sub rack 54.

When the handle assembly 100 of the present invention is used, after the button 51 is pressed, the main rack 52 is displaced under the action of the button 51, so as to drive the gear 53 to rotate, and further drive the auxiliary rack 54 to displace along the extending direction of the chute 212, so that the auxiliary rack 54 moves to a position opposite to the start switch 40. The handle 31 is then pulled up, so that the holding arm 32 rotates and holds the sub-rack 54, and the sub-rack 54 holds the start switch 40, thereby starting the motor. When the button 51 and the handle 31 are released, the button 51 is reset under the action of the auxiliary elastic element 511, and the main rack 52 is reset under the action of the main elastic element 55, so as to drive the gear 53 to rotate, and further drive the auxiliary rack 54 to reset, and at this time, the start switch 40 turns off the motor. Because neither pulling the handle 31 nor pressing the button 51 alone triggers the start switch 40, the handle assembly 100 of the present invention has high safety, and can effectively avoid the user from starting the motor due to misoperation, thereby effectively avoiding accidents.

A power tool is also disclosed, including the handle assembly 100. The electric tool is a snowplow or a grass pusher.

In summary, the handle assembly 100 of the present invention forms a dual trigger structure to start the motor by providing the button 51 and the pull rod 30 corresponding to the button 51, so as to improve the use safety of the electric tool of the present invention, thereby effectively avoiding the user from starting the motor due to misoperation and further effectively avoiding the occurrence of safety accidents.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A handle assembly, comprising:

the push rod is provided with a handle and an installation arm which is formed by bending and extending from one end of the handle;

the shell is arranged on the push rod and provided with a plurality of side walls, and the side walls are surrounded to form a containing cavity;

the pull rod is pivotally mounted on the shell and comprises a handle positioned outside the accommodating cavity and a supporting arm positioned inside the accommodating cavity;

the starting switch is positioned in the accommodating cavity and used for starting the motor; and

the trigger assembly comprises a button, a main rack matched with the button, a gear matched with the main rack and a secondary rack matched with the gear;

when the button is pressed, the main rack is displaced under the action of the button, so that the gear is driven to rotate, and the auxiliary rack is driven to displace, so that the auxiliary rack moves to the position opposite to the starting switch; and then pulling the handle to enable the abutting arm to rotate and abut against the auxiliary rack, so that the auxiliary rack abuts against the starting switch, and the motor is started.

2. The handle assembly according to claim 1, wherein: the button and the main toothed bar are integrally formed.

3. The handle assembly of claim 2, wherein: the button is also provided with a secondary elastic element and a positioning piece defining the secondary elastic element; when the button is pressed, the auxiliary elastic element is elastically deformed; when the button is released, the button is reset under the action of the auxiliary elastic element, so that the main rack is driven to reset.

4. The handle assembly according to claim 1, wherein: the button and the main toothed bar are separately arranged.

5. The handle assembly of claim 1 or 4, wherein: the trigger assembly also has a primary resilient element that cooperates with the primary underwire; when the button is pressed, the button pushes the main rack to move, so that the main elastic element is elastically deformed under the action of the main rack; when the button is released, the main toothed bar is reset under the action of the main elastic element, so that the button is driven to reset.

6. The handle assembly according to claim 1, wherein: the gear comprises a wheel shaft, and a main gear and a secondary gear which are arranged on the wheel shaft; the main gear is matched with the main rack, and the auxiliary gear is matched with the auxiliary rack.

7. The handle assembly of claim 6, wherein: the number of teeth of the main gear is smaller than that of the auxiliary gear.

8. The handle assembly according to claim 1, wherein: the handle assembly is also provided with an indicator light to alert the user to the current status.

9. An electric tool, characterized in that: the power tool comprising the handle assembly of any one of claims 1 to 8.

10. The power tool of claim 9, wherein: the electric tool is a snowplow or a grass pusher.