CN216298143U - Cutting tool - Google Patents

Abstract

There is provided a cutting tool comprising: a power plug and a cable connected to the power plug; a handle having a connecting end pivotally connected to the body of the cutting tool and a free end capable of receiving an operator's grip and pivoting about the pivot; the handle switch is arranged on the handle and used for triggering or stopping the cutting operation of the cutting tool; and an attachment interface provided at the connection end of the handle for receiving an extension rod of an attachment as a cutting tool, the extension rod being supported at the free end of the handle in a state where the extension rod is coupled to the attachment interface and receives a pressing force.

Description

Cutting tool

Technical Field

The utility model relates to a cutting tool, in particular a dicing Saw (Cut Off Saw), capable of receiving accessories.

Background

The cutting tool can be adapted to various types of saw blades so as to be capable of cutting materials of various materials such as metal, wood, fiberboard, plastic, etc., and thus the cutting tool is widely applied to various fields and enters a large number of households. In the related art, many studies and improvements have been made on safety, energy efficiency, and weight reduction of cutting tools. However, there is still room for improvement in the operational friendliness of cutting tools. For example, when using a cutting tool at a construction site, the cutting tool is generally placed on the ground to cut a construction material such as a steel pipe placed on a bottom surface. Thus, the operator has to operate the cutting tool in a crouched or stooped posture. Operating the tool in such a posture for a long time is very hard. Accordingly, it is desirable to improve the operational friendliness of existing cutting tools.

SUMMERY OF THE UTILITY MODEL

Against this background, the present invention is directed to a cutting tool capable of receiving an accessory to improve its operational friendliness.

To this end, a cutting tool is provided, comprising: a power plug and a cable connected to the power plug; a handle having a connecting end pivotally connected to the body of the cutting tool and a free end capable of receiving an operator's grip and pivoting about the pivot; the handle switch is arranged on the handle and used for triggering or stopping the cutting operation of the cutting tool; and an attachment interface provided at the connection end of the handle for receiving an extension rod of an attachment as a cutting tool, the extension rod being supported at the free end of the handle in a state where the extension rod is coupled to the attachment interface and receives a pressing force.

In one embodiment, the accessory interface comprises a first portion extending perpendicular to the pivot axis and having a recess in an inner peripheral wall thereof for engaging with a catch on the extension pole and for electrically connecting to a power supply circuit of the cutting tool.

In an embodiment, the recess comprises a groove discretely, or continuously, around an axial centerline of the first portion; and/or the profile of the groove is approximately rectangular or square or circular or elliptical.

In one embodiment, the accessory interface further comprises a second portion including a card slot portion, the cable being capable of wrapping around a peripheral wall of the second portion and capturing an end thereof coupled to the power plug in the card slot portion.

In one embodiment, the slot is located at an end of the second portion that is not connected to the first portion and/or on a peripheral wall of the second portion.

In one embodiment, the first and second portions are hollow and communicate with each other, the power plug and the cable connected thereto being receivable in the accessory interface without the accessory interface receiving any accessory; and the end of the first portion not connected to the second portion is fixed at the connecting end of the handle.

In one embodiment, the cutting tool further comprises the elongate shaft having a head portion, a tail portion and a telescoping shaft portion between the head portion and the tail portion; the outer peripheral wall of the head portion is provided with a buckling portion, the outer peripheral wall of the tail portion is provided with an accessory switch, and the length of the rod portion comprises a plurality of adjustable lengths or a length capable of being adjusted in a stepless mode.

In one embodiment, the locking portion comprises a protrusion that discretely, or continuously, encircles an axial centerline of the extension rod; and/or the profile of the protrusion is approximately rectangular or square or circular or elliptical.

In an embodiment, the handle switch is disabled and the accessory switch is enabled with the head of the extension pole inserted into the accessory interface and electrically connected to the power circuit of the cutting tool.

In one embodiment, a fixing is provided at the free end of the handle to restrain the extension rod.

Drawings

Fig. 1 schematically illustrates a cutting tool according to an embodiment of the present invention, in a state where no accessory is received.

Fig. 2 shows a state in which the cutting tool in fig. 1 receives the attachment.

FIG. 3 schematically illustrates an expanded view of an inner circumferential surface of a first portion of an accessory interface in accordance with an embodiment of the present invention.

Fig. 4 schematically illustrates a schematic view of an accessory interface of the cutting tool of fig. 1.

Figure 5 schematically shows a schematic view of an extension rod as an attachment for a cutting tool.

Detailed Description

Embodiments of the present invention relate to a cutting tool including an accessory interface. The accessory interface is capable of receiving an extension pole as a tool accessory. After the cutting tool has attached the extension pole, the extension pole serves as an "extended" operating handle. Thus, the operator can stand to operate the cutting tool without squatting or stooping, and the operation friendliness is improved.

In addition, the accessory interface can also be used to receive a power plug of the cutting tool and a cable attached to the plug. Like this, at the in-process that removes cutting means, power plug and cable can not be dragged like "monkey tail" and damaged, have promoted convenience and security.

According to an embodiment of the utility model, the cutting tool may be a circular saw machine, but also a jigsaw machine or a saber saw.

The following describes embodiments of the present invention with reference to the drawings. In the drawings and the description with reference to the drawings, a circular saw machine is described as an example.

Referring to fig. 1, a cutting tool 100 according to an embodiment of the present invention includes: the power plug comprises a body 1, a power plug 2, a cable 3 connected with the power plug 2, a tool switch 4, a handle 5, a cutting blade 6 and an accessory interface 7. The cutting tool 100 of fig. 1 is shown in a state where the accessory interface 7 does not receive an optional accessory.

Referring to fig. 2, the cutting tool 100 may also include an extension pole 8 as an optional accessory to the tool 100. The cutting tool 100 in fig. 2 is in a state where the extension bar 8 is attached in the attachment interface 7.

The power plug 2 may be connected to an external power source, e.g., an electrical grid, to supply power to the cutting tool 100. The power plug 2 is connected to a cable 3. The length of the cable 3 may define the radius of use of the cutting tool 100. The length of the cable 3 is, for example, between 1 and 10 meters. One end of the cable 3 is connected to the power plug 2 and the other end is connected to the power supply circuit of the cutting tool 100.

The tool switch 4 is provided on the body 1 of the cutting tool 100 at a position convenient for an operator to operate. For example, the tool switch 4 is provided on an upper surface of the handle 5 (when the tool is horizontally placed on the ground, the "upper surface" refers to a face of the handle opposite to the face facing the ground). The tool switch 4 is connected in series in the power supply circuit of the tool 100, and has two states of "ON (ON)" and "OFF (OFF)". The tool switch 4 may be implemented as a rocker switch, a rotary switch or a slide switch, etc.

The handle 5 has a connecting end 51 and a free end 52. The connecting end 51 is pivotally connected to the body 1 of the cutting tool 100. The free end 52 is capable of receiving the grip of the operator and is capable of pivoting about the pivot axis. The free end portion 52 has a grip portion 53 to be gripped by an operator, and a handle switch 54 is provided on the grip portion 53. The handle switch 54 is connected in series in the power supply circuit of the tool 100. In addition, a fixing piece (not shown) may be provided at the free end 52 of the handle 5 for restraining the extension pole 8 in case the accessory interface 7 is attached to the extension pole. Thus, the extension pole 8 does not move or rattle when pressed by the operator. The fixing piece can be realized by various types of pull buttons, binding bands, sleeve buttons and the like or combinations thereof.

The cutting blade 6 serves as a cutting member which is replaceable, for example, depending on the material to be cut, to fit the tool 100 with a suitable cutting blade 6. The cutting blade 5 is, for example, a circular saw blade or a jigsaw bar.

An accessory interface 7 is provided at the connection end of the handle. For example, fixed to the body 1 of the tool 100 and located near the connecting end 51 of the handle 5. The attachment interface 7 is for receiving an extension rod 8 as an attachment for a cutting tool, and the extension rod 8 is supported at the free end 52 of the handle 5 in the case where the extension rod 8 is coupled to the attachment interface 7 and is subjected to a pressing force.

In one embodiment, the accessory interface 7 is secured to the connection end 51. The accessory interface 7 comprises two cylindrical parts, i.e. a first part 71 and a second part 72, see fig. 1. Both parts are hollow and communicate with each other. The first portion 71 and the second portion 72 both extend perpendicular to the pivot axis. The inner diameter of the first part 71 matches the outer diameter of the cylindrical extension rod 8, i.e. in case the extension rod 8 is inserted into the first part 71, there is no situation that the extension rod is too thick to be inserted, nor is there a situation that the extension rod is too thin to have a large clearance inside the first part 71.

The position and pattern of the accessory interface 7 is such that after the extension pole 8 is attached to the accessory interface 7 (inserted into the accessory interface 7), the extension pole 8 can be supported at the free end 52 of the handle 5 so that the extension pole 8 is always carried by the handle 5 during the process of the operator pressing on the extension pole 8 so that the extension pole 8 does not easily break.

The inner peripheral wall 711 of the first portion 71 has a recess for engaging with a latch on the extension rod 8. In addition, the recess also serves to make an electrical connection between the extension pole 8 and the power supply circuit of the tool 100. For example, the recess on the inner peripheral wall of the first portion 71 and the latch on the extension rod 8 are both made of metal, and when the recess and the latch are engaged with each other, the accessory switch on the extension rod is connected to the power supply circuit of the tool 100, and the handle switch is disconnected from the power supply circuit of the tool 100. In this regard, further description will be provided below.

The recess may comprise a groove discretely, or continuously, around the axial centre line of the first portion. The profile of the groove is approximately rectangular or square or circular or oval. Some implementations of the recess are described below with reference to fig. 3.

Fig. 3 schematically shows an expanded view of the inner circumferential surface 711 of the first portion 71 of the accessory interface 7 according to an embodiment of the present invention. Referring to fig. 3, the recesses include one or more of the following on the peripheral wall 711 of the first part 71: a continuous extending recessed portion 711B, and a discrete recessed portion 711A. For example, the depressions include at least one discrete ring of depressions formed in the inner peripheral wall 711. For example, the recesses include one or more recesses continuously extending in the axial direction X on the inner peripheral wall 711. For example, the recesses include one or more rows of recesses discretely distributed along the axial direction X on the inner peripheral wall 711.

It should be understood that while fig. 3 and the description thereof above describe some implementations of the recess by way of example, the recess may also include other suitable implementations, not limited to those illustrated and described.

The second portion 72 of the accessory interface 7 includes a catch portion 721 that can catch the cable 3, for example, by an interference fit. Referring to fig. 4, a bayonet portion 721 is shown at the end of the second portion 72 not connected to the first portion 71. In addition, the bayonet part 721 may also be located on the outer peripheral wall of the second part 72 (not shown). The cable 3 may be wound around the outer peripheral wall of the second member and then the end thereof is caught in the catching groove portion 721, thus achieving the housing of the power plug and the cable. Slot portion 721 may include one or more. In the case where there are a plurality of card slot portions, the cable 3 may be wound partially and then be caught in one card slot portion, then wound partially and caught in the other card slot portion, thereby completing the storage of the power plug and the cable.

In addition, the power plug 2, with the cable 3 connected, may be received through the hollow first and second portions 71, 72 without any accessory being received in the accessory interface 7.

Referring to fig. 5, the extension pole 8 includes a head portion 81, a telescoping pole portion 82, and a tail portion 83. A plurality of engaging portions 811A, 811B, and 811C are provided on the outer peripheral wall 811 of the head portion 81. With the extension pole 8 inserted into the accessory interface 7, the head 81 or the head 81 and a portion of the stem 82 that is continuous with the head 81 are inserted into the first portion 71. The length of the rod portion can be adjusted, for example, the operator can adjust the comfortable length according to the height and the operation scene of the operator. The stem portion 82 may include multiple segments (see 821 encircled in phantom in fig. 5) that are capable of telescoping. The segments may extend all the way out or may be retracted into the stem portion. In one embodiment, the stem portion 82 includes 3 segments, each segment having a length between 10cm and 30 cm. The operator may choose to pull the extension pole 8 up to 1 or 2 or 3 ends. The rod 82 can also be designed to be adjustable in length. For example, to extend or retract its length in a rotational manner. Rotation in one direction extends the rod portion and rotation in the opposite direction shortens the rod portion. An accessory switch 831 is provided on the tail 83. The function of the accessory switch is similar to that of the handle switch. Also, when the extension pole 8 is inserted into the accessory interface 7, the handle switch is "disabled" while the accessory switch is "enabled". That is, once the extension pole 8 is inserted into the accessory interface and electrically connected to the power supply circuit of the tool 100, the function of the handle 5 and its handle switch is transferred to the extension pole 8 and accessory switch as an accessory. This can be achieved by providing a gating switch on the supply loop. For example, when an accessory is detected to be inserted, the gating switch gates a power supply loop accessed by the accessory; when the accessory is not detected to be inserted, the gating switch gates the power supply loop accessed by the handle switch.

The shape, number and location of the snap features on the extension pole should be configured to match the recessed features in the accessory interface. Accordingly, the catch comprises a projection that discretely, or continuously, encircles the axial centre line of the extension rod. The profile of the projections is approximately rectangular or square or circular or oval. The embodiment of the snapping portion is similar to the embodiment of the groove portion described above with reference to fig. 3, and is not described herein again.

Operation without receiving accessories

In the case where the accessory interface 7 does not receive an accessory, the cutting tool 100 operates by: the power plug 1 is connected to an external power source (e.g., an electric grid), and the operator sets the state of the tool switch 4 to an ON (ON) state, for example, the operator presses the tool switch 4 so that it is in the ON state. The operator grips the grip portion of the handle 5, and then the operator presses down the handle 5 while the operator presses the handle switch on the grip portion all the time. At this point, the tool 100 performs a cutting operation, i.e. the cutting blade 6 cuts the material to be cut. In the event that the operator releases the handle switch, the tool 100 will cease the cutting operation.

In the case where the accessory interface 7 does not receive an accessory, when the tool 100 does not perform a cutting operation, the cable 3 may be folded back and forth and received into the accessory interface 7 together with the power plug 2. In addition, the cable 3 may be wound around the outer circumferential wall of the accessory interface 7 and be caught in the catching groove, so as to receive the cable 3.

Receive the working process of the accessory

An operator inserts the extension rod 8 into the accessory interface 7, and the buckling part on the extension rod 8 is buckled with the groove part on the inner wall of the accessory interface 7, so that the electric connection is realized. At this point, the accessory switch on the extension pole is connected to the power supply circuit of the tool 100, while the handle switch on the handle 5 is disconnected from the power supply circuit of the tool 100. The operator may then secure the extension pole using the fastener at the free end of the handle. In this way, the extension rod is supported and fixed at the free end. The operator presses the extension pole 8 down while holding the accessory switch and the tool 100 performs a cutting operation. At this time, the extension pole is supported by the handle 5 and moves downward together with the handle 5, and the extension pole is not easily broken.

When the tool 100 does not perform a cutting operation, the cable 3 may be wound around the peripheral wall of the accessory interface 7 and caught in the catch recess to enable storage of the cable 3.

It will be appreciated that whether a handle switch or an accessory switch, the operator is required to hold the switch so that it is in the "ON" state all the time, before the tool 100 will perform a cutting operation. Once the operator releases the handle switch or accessory switch, the tool 100 stops the cutting operation. This has the advantage that a high level of safety is met and the tool 100 does not perform a cutting operation by an operator or other object accidentally touching the switch.

While the foregoing describes certain embodiments, these embodiments are presented by way of example only, and are not intended to limit the scope of the present application. The appended claims and their equivalents are intended to cover all modifications, substitutions and changes made within the scope and spirit of this application.

Claims (10)

1. A cutting tool, comprising:

a power plug and a cable connected to the power plug;

a handle having a connecting end pivotally connected to the body of the cutting tool and a free end capable of receiving an operator's grip and pivoting about the pivot;

the handle switch is arranged on the handle and used for triggering or stopping the cutting operation of the cutting tool; and

an accessory interface disposed at the connection end of the handle for receiving an extension rod of an accessory as a cutting tool, the extension rod supported at the free end of the handle in a condition where the extension rod is coupled to the accessory interface and subjected to a pressing force.

2. The cutting tool of claim 1, wherein the accessory interface includes a first portion extending perpendicular to the pivot axis and having a recess in an inner peripheral wall thereof for engaging a catch on the extension pole and for electrically connecting to a power supply circuit of the cutting tool.

3. The cutting tool of claim 2, wherein the recess comprises a groove discretely, or continuously, about an axial centerline of the first portion; and/or

The profile of the groove is approximately rectangular or square or circular or oval.

4. The cutting tool of claim 2, wherein the accessory interface further comprises a second portion including a card slot portion, the cable being capable of being wrapped around a peripheral wall of the second portion and capturing an end thereof coupled to the power plug in the card slot portion.

5. A cutting tool according to claim 4, wherein the bayonet portion is located at an end of the second portion which is not connected to the first portion and/or on a peripheral wall of the second portion.

6. The cutting tool of claim 4 or 5, wherein the first portion and the second portion are hollow and communicate with each other, the power plug and the cable connected thereto being receivable in the accessory interface without the accessory interface receiving any accessory; and is

The end of the first portion not connected to the second portion is fixed at the connecting end of the handle.

7. The cutting tool of claim 1, further comprising said elongated shank having a head portion, a tail portion, and a telescoping shank portion between said head portion and said tail portion;

the outer peripheral wall of the head part is provided with a buckling part, the outer peripheral wall of the tail part is provided with an accessory switch, and the length of the rod part comprises a plurality of adjustable lengths or a length capable of being adjusted in a stepless mode.

8. The cutting tool of claim 7, wherein the snap feature comprises a protrusion that discretely, or continuously, encircles an axial centerline of the extension rod; and/or

The profile of the protrusion is approximately rectangular or square or circular or oval.

9. The cutting tool of claim 7, wherein the handle switch is disabled and the accessory switch is enabled when the head of the extension pole is inserted into the accessory interface and electrically connected to the power circuit of the cutting tool.

10. A cutting tool according to claim 1, wherein a securing member is provided at the free end of the handle to restrain the elongate rod.

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