CN-121988798-A - Hand-held cutting saw

CN121988798ACN 121988798 ACN121988798 ACN 121988798ACN-121988798-A

Abstract

A hand held cutting saw includes a base plate having an upper surface and an opposite lower surface for guiding the hand held cutting saw in a work direction over a work piece or guide rail, a sawing mechanism including a circular saw blade and a motor for driving the circular saw blade to rotate about a first axis, the sawing mechanism being pivotally coupled to the base plate about a second axis between a first position in which the circular saw blade does not protrude from the lower surface of the base plate and a second position in which the circular saw blade protrudes from the lower surface of the base plate, a grip for a user to cause the circular saw blade to cut into the second position relative to the base plate in the first position, a biasing member disposed between the sawing mechanism and the base plate to bias the sawing mechanism toward the first position, the first axis being rearward of the second axis in a front-to-rear direction. By adopting the technical scheme, the handheld cutting saw convenient for users to use can be provided.

Inventors

Slobodan Jivanovic
Greg Mangalaldi
Peter Lago
Matt Rybka
Justin Spaulding
Harris Mansur
LU BING

Assignees

南京泉峰科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250924
Priority Date: 20241107

Claims (15)

1. A hand held dicing saw comprising: a base plate including an upper surface and an opposite lower surface for guiding the hand held cutting saw in a work direction on a work piece or guide rail; A sawing mechanism comprising a circular saw blade and a motor for driving the circular saw blade to rotate about a first axis, the sawing mechanism being pivotally coupled to the base plate about a second axis between a first position and a second position, wherein the circular saw blade does not protrude from a lower surface of the base plate in the first position and protrudes from a lower surface of the base plate in the second position; a grip portion for a user to operate to cut the circular saw blade into the second position relative to the base plate at the first position; A biasing member disposed between the sawing mechanism and the base plate to bias the sawing mechanism toward the first position; It is characterized in that the method comprises the steps of, The first axis is positioned behind the second axis in the front-rear direction, wherein the cutting advancing direction of the handheld cutting saw is defined as the front direction.
2. The hand-held dicing saw of claim 1 including a plunge depth assembly for permitting movement of the circular saw blade between a non-plunge position and a plunge position, the plunge depth assembly including a pivot member connected to the base plate, the sawing mechanism being pivotably connected to the base plate by the pivot member.
3. The hand held dicing saw of claim 2 wherein the pivot is located on the front side of the motor in the front-to-back direction.
4. The hand held dicing saw of claim 2 wherein the pivot member is provided at a front end of the base plate.
5. The hand-held dicing saw of claim 1 including a power supply assembly for providing a discharge current to power the motor, the power supply assembly including a battery pack removably mounted to the hand-held dicing saw.
6. The hand-held dicing saw of claim 5 wherein the battery pack is disposed on the front side of the grip in the front-rear direction.
7. The hand held dicing saw of claim 5 wherein the battery pack does not protrude from the width of the bottom plate in the left-right direction.
8. The hand held dicing saw of claim 1 wherein the biasing member comprises a resilient element.
9. The hand held dicing saw of claim 1 wherein the base plate is adapted to operate with a dicing rail.
10. The hand-held dicing saw of claim 1, wherein at least part of the grip portion is located on the right side of the circular saw blade in the left-right direction, wherein the right side defining the direction of progress of the dicing is right.
11. A hand held dicing saw comprising: a base plate including an upper surface and an opposite lower surface for guiding the hand held cutting saw in a work direction on a work piece or guide rail; the sawing mechanism comprises a circular saw blade and a motor for driving the circular saw blade to rotate, and further comprises a pivoting piece, wherein the sawing mechanism is pivotably coupled to the bottom plate between a first position and a second position based on the pivoting piece, and the circular saw blade does not protrude from the lower surface of the bottom plate in the first position and protrudes from the lower surface of the bottom plate in the second position; a grip portion for a user to operate to cut the circular saw blade into the second position relative to the base plate at the first position; At least one battery pack for providing a discharge current to power the motor; A biasing member disposed between the sawing mechanism and the base plate to bias the sawing mechanism toward the first position; It is characterized in that the method comprises the steps of, At least part of the at least one battery pack is located at a front side of the grip part in a front-rear direction, and the pivot member is located at a front side of the motor; The distance between the gravity center G of the battery pack and the rotating pivot B of the pivoting piece is more than or equal to 10mm, wherein the cutting advancing direction of the handheld cutting saw is defined as the front direction.
12. A hand held dicing saw comprising: a base plate including an upper surface and an opposite lower surface for guiding the hand held cutting saw in a work direction on a work piece or guide rail; A sawing mechanism including a circular saw blade and a motor for driving the circular saw blade to rotate, the sawing mechanism being movably coupled to the base plate between a first position in which the circular saw blade does not protrude from a lower surface of the base plate and a second position in which the circular saw blade protrudes from the lower surface of the base plate; characterized by further comprising: A connecting mechanism movably arranged between the sawing mechanism and the bottom plate so that the circular saw blade can cut into the second position relative to the bottom plate at the first position; A biasing member coupled to the sawing mechanism or the connecting mechanism to bias the sawing mechanism toward the first position; the connecting mechanism is provided with a first end connected with the bottom plate, and the first end is arranged on the front side of the bottom plate; Wherein, define the cutting direction of advance of handheld dicing saw as the forward direction.
13. The hand held dicing saw of claim 12 wherein the attachment means has a second end attached to the sawing means, the first end being movable relative to the base plate and the second end being movable relative to the sawing means.
14. The hand held dicing saw of claim 13 wherein the attachment means is a link and the biasing member is a torsion spring acting on the attachment means.
15. The hand held dicing saw of claim 12 wherein the attachment means has a second end attached to the sawing means, the first end being movable relative to the base plate, the second end being fixed to the sawing means.

Description

Hand-held cutting saw Technical Field The application relates to the field of electric tools, in particular to a handheld cutting saw. Background Hand held cutting saws, such as orbital saws, have a grip portion that is generally fixedly attached to the rear end of the base plate and the grip portion is rotated about the rear end of the base plate to vary the depth of cut of the cutting blade. However, the operation mode does not conform to the cutting habit of the user, and when the user cuts for a long distance or a long time, the operation is inconvenient for the user, and the user experience is poor. This section provides background information related to the application, which is not necessarily prior art. Disclosure of Invention It is an object of the present application to solve or at least mitigate some or all of the above problems. Therefore, an object of the present application is to provide a handheld dicing saw that is convenient for a user to use, and improves the experience of the user. In order to achieve the above object, the present application adopts the following technical scheme: A hand-held cutting saw includes a base plate including an upper surface and an opposite lower surface for guiding the hand-held cutting saw in a work direction on a workpiece or guide rail, a sawing mechanism including a circular saw blade and a motor for driving the circular saw blade to rotate about a first axis, the sawing mechanism being pivotally coupled to the base plate about a second axis between a first position in which the circular saw blade does not protrude from the lower surface of the base plate and a second position in which the circular saw blade protrudes from the lower surface of the base plate, a grip portion for a user to operate to cut the circular saw blade into the second position relative to the base plate in the first position, a biasing member disposed between the sawing mechanism and the base plate to bias the sawing mechanism toward the first position, the first axis being located rearward of the second axis in a front-to-rear direction, wherein a cutting advancement direction of the hand-held cutting saw is defined as a front direction. In some embodiments, the hand held cutting saw includes a plunge depth assembly for permitting movement of the circular saw blade between a non-plunge position and a plunge position, the plunge depth assembly including a pivot member coupled to the base plate, the sawing mechanism being pivotably coupled to the base plate by the pivot member. In some embodiments, the pivot is located on the front side of the motor in the front-to-rear direction. In some embodiments, the pivot member is provided at a front end portion of the base plate. In some embodiments, the handheld dicing saw includes a power supply assembly for providing a discharge current to power the motor, the power supply assembly including a battery pack removably mounted to the handheld dicing saw. In some embodiments, the battery pack is disposed on the front side of the grip portion in the front-rear direction. In some embodiments, the battery pack does not protrude from the width of the base plate in the left-right direction. In some embodiments, the biasing member comprises a resilient element. In some embodiments, the base plate is capable of adapting to the cutting rail operation. In some embodiments, at least a portion of the grip is located on the right side of the circular saw blade, wherein the right side defining the direction of cut advance is the right. In some embodiments, a handheld cutting saw includes a base plate including an upper surface and an opposite lower surface for guiding the handheld cutting saw in operation on a workpiece or guide rail along an operational direction, a sawing mechanism including a circular saw blade and a motor for driving the circular saw blade to rotate, the sawing mechanism further including a pivot member pivotally coupled to the base plate based on the pivot member between a first position in which the circular saw blade does not protrude from the lower surface of the base plate and a second position in which the circular saw blade protrudes from the lower surface of the base plate, a grip portion operable by a user to cause the circular saw blade to cut into the base plate relative to the base plate to a second position in the first position, at least one battery pack for providing a discharge current to power the motor, a biasing member disposed between the sawing mechanism and the base plate to bias the sawing mechanism toward the first position, at least a portion of the at least one battery pack located on a front side of the grip portion, the pivot member located on a front side of the motor, a distance between G of the battery pack and a rotation pivot point B of the pivot member being equal to or greater than 10mm in a forward direction, wherein the forward direction of the cutting direction is defined as a forward direction of t