CN212371310U - Electric tool - Google Patents

Abstract

The utility model discloses an electric tool, belonging to the technical field of tools, comprising a casing, wherein the casing comprises a handheld part for a user to hold; a cutter extending out of the housing in a first direction; the power tool further comprises an illumination assembly, and when the illumination direction of the illumination assembly faces the user, the illumination assembly turns over or is weakened in brightness or is turned off. This electric tool can overturn or weaken luminance or extinguish according to electric tool operating condition's difference when the illumination direction is towards the user to avoid light directly to shoot into people's eye or weaken the light intensity, thereby avoid operating personnel dizzy, improve operating personnel's travelling comfort and operation security.

Description

Electric tool

Technical Field

The utility model relates to an instrument technical field especially relates to an electric tool.

Background

A jigsaw is a tool for cutting a workpiece by reciprocating a saw blade, typically with an illumination device, such as an LED light, which is constantly illuminated during operation to illuminate the working area of the tool. According to the difference of cutting positions, the curve saw generally has two working states of tangent and reverse cutting, and when the curve saw is tangent, the irradiation direction of the lighting device is consistent with the sight line direction of an operator, so that discomfort can not be caused to eyes; when the lighting device is reversely cut, the irradiation direction of the lighting device is upward and is opposite to the sight direction of an operator, at the moment, the light of the lighting device directly irradiates human eyes, and the operator can feel dazzling and dazzling even dizziness when directly watching the lighting device, so that the processing fault is caused, the operator is injured by an electric tool, even an operation accident is caused, and personal and property safety is endangered.

To solve this technical problem, the prior art discloses a way of manually turning off the lighting device, i.e. providing an LED switch on the power tool for manual operation, but such operation is inconvenient when the power tool is in some states and may also result in incorrect operation. For example, the operator may not be able to turn off the lighting device, thereby blinding it. The prior art also discloses an automatic lighting control system for an electric tool, wherein a light control device sets different working modes of an LED lamp according to a position signal acquired by a position sensor, but the lighting device needs to be controlled by the light control device according to acquired position information, the structure is complex, and the control process is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric tool, lighting assembly can overturn or weaken luminance or extinguish according to electric tool operating condition's difference to avoid light directly to jet into people's eye or weaken the light intensity, improve operating personnel's travelling comfort and operation security.

As the conception, the utility model adopts the technical proposal that:

a power tool, comprising:

a housing including a hand-held portion for a user to hold;

a cutter extending out of the housing in a first direction;

the power tool further comprises an illumination assembly, and when the illumination direction of the illumination assembly faces the user, the illumination assembly turns over or is weakened in brightness or is turned off.

As a preferable aspect of the above electric power tool, the illumination unit includes:

the LED lamp is arranged on the shell;

and the sensor is connected with the LED lamp and used for detecting that the illumination direction faces the user.

As a preferable technical solution of the above electric power tool, the lighting assembly has a gravity adaptability, and when the illumination direction is upward toward the user, the lighting assembly can turn over or decrease or extinguish under the action of gravity.

In a preferred embodiment of the power tool, the sensor is a pressure sensor or a photo resistor provided in the hand-held portion.

In a preferred embodiment of the electric power tool, the sensor is a mercury switch connected in series to an electric circuit of the LED lamp.

In a preferred embodiment of the power tool, the sensor is an acoustic sensor or an image sensor disposed inside the housing.

As a preferable aspect of the above electric power tool, the illumination unit includes:

the LED lamp is rotationally connected with the shell, and when the illumination direction upwards faces the user, the LED lamp can turn over under the action of gravity.

As a preferable aspect of the above electric power tool, the illumination assembly further includes:

the support is fixedly connected with the machine shell, and the LED lamp is rotatably connected with the support.

As a preferable aspect of the above electric power tool, the illumination unit includes:

the LED lamp is fixedly connected to the shell;

the optical filter rotates connect in the casing, the one side of optical filter is the condensing surface, and the another side is the scattering surface, works as the illumination direction upwards moves towards during the user, the optical filter can overturn so that the scattering surface is located under the action of gravity the light-emitting side of LED lamp.

As a preferable aspect of the above electric power tool, the illumination unit includes:

the LED lamp is fixedly connected to the shell;

the ball switch is connected in series in the circuit of the LED lamp, and when the illumination direction faces upwards to the user, the ball switch can control the LED lamp to be turned off under the action of gravity.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides an electric tool, cutter stretch out the casing along the first direction, and lighting assembly can overturn or weaken luminance or extinguish according to electric tool operating condition's difference when the illumination direction is towards the user to avoid light directly to jet into people's eye or weaken the light intensity, thereby avoid operating personnel to vertigo, improve operating personnel's travelling comfort and operational safety nature.

Drawings

Fig. 1 is a schematic structural view of the jig saw provided by the present invention in a tangent state;

fig. 2 is a schematic structural view of the jig saw provided by the present invention in a reverse cutting state;

FIG. 3 is a bottom view of FIG. 1;

fig. 4 is a schematic partial structural diagram of a jigsaw when the sensor provided by the first embodiment of the present invention is a pressure sensor or a photo resistor;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

fig. 6 is a schematic view of a partial structure of a jig saw according to an embodiment of the present invention, in which the sensor is a ball switch or a mercury switch;

FIG. 7 is a schematic view of the structure of FIG. 6 from another perspective;

fig. 8 is a schematic view of a part of the structure of the jig saw provided by the second embodiment of the present invention in a tangential state;

fig. 9 is a schematic view of a portion of the jig saw provided in the second embodiment of the present invention in a backward cutting state.

In the figure:

100. a sweep-saw; 101. a first straight line;

11. a housing; 111. a hand-held portion; 12. a reciprocating lever; 13. a saw blade;

2. a clamping device;

3. a lighting assembly; 31. an LED lamp; 32. a pressure sensor; 33. a ball switch; 34. a fixed seat; 35. a connection terminal; 36. and (4) a bracket.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

The power tool shown in fig. 1 achieves its tool function by connecting a working attachment, and further includes an output member for outputting power and a holding device 2 for connecting the working attachment to the output member. In the present embodiment, the power tool is specifically a jigsaw 100, and for the jigsaw 100 of the present embodiment, the working accessory is a tool, specifically, a saw blade 13.

As shown in fig. 1, the jig saw 100 includes: the saw comprises a machine shell 11, a motor, a transmission assembly and a clamping device 2, wherein the motor is arranged in the machine shell 11, and the clamping device 2 is used for clamping a saw blade 13. The housing 11 includes a hand-held portion 111 for holding a user, and the saw blade 13 extends out of the housing 11 along a first direction, which in this embodiment is the direction a shown in fig. 1.

It is understood that in the present embodiment, the power tool is exemplified by the jigsaw 100, and in fact, the protection scope of the present invention is only if the power tool needs to use a clamping device 2 substantially the same as the present invention to clamp a working accessory.

The motor can be specifically a motor, the transmission assembly is in driving connection with the motor to output power, the transmission assembly comprises an eccentric structure and a reciprocating rod 12, and the motor drives the reciprocating rod 12 to reciprocate by driving the eccentric structure. The reciprocating lever 12 extends along a first straight line 101, which is parallel to the first direction. The gripping device 2 is connected to the reciprocating rod 12.

The jigsaw 100 in this embodiment further comprises an illumination assembly 3, the illumination assembly 3 being arranged on the housing 11 for illuminating a working area, i.e. an area of a location to be processed. The lighting assembly 3 is configured such that when the illumination direction is towards the user, the lighting assembly 3 is flipped over or dimmed or extinguished.

As shown in fig. 1 to 3, in practical applications, due to the difference of the areas of the positions to be processed, the jigsaw 100 has a tangent state located above the working area and a reverse tangent state located below the working area, when the jigsaw 100 is in the tangent state, i.e., the illumination direction is away from the user, the illumination assembly 3 is turned on downward, i.e., toward the working area, and at this time, the illumination direction of the illumination assembly 3 is consistent with the visual line direction of the operator, and the light of the illumination assembly 3 does not illuminate the human eyes to cause discomfort; when the jigsaw 100 is in the reverse cutting state, that is, the illumination direction faces upward to the user, the illumination direction of the illumination assembly 3 is opposite to the sight direction of the operator, and at the moment, the illumination assembly 3 is turned off upward, that is, turned off toward the working area, and in this way, the light can be prevented from directly entering the eyes of the operator, so that the operator can be prevented from dizziness, and the comfort and the operation safety of the operator can be improved.

The lighting assembly 3 comprises an LED lamp 31 and a sensor, the LED lamp 31 is fixedly disposed on the housing 11, and the sensor is electrically connected to the LED lamp 31 for detecting whether the illumination direction faces the user. When the jigsaw 100 is in the tangent state, the sensor trigger LED lamp 31 is lit, and when the jigsaw 100 is in the reverse state, the sensor trigger LED lamp 31 is extinguished. Alternatively, as shown in fig. 3, the LED lamp 31 is provided on the lower surface of the front of the cabinet 11, and is generally provided in two or more, ensuring optimal lighting and certain redundancy.

Specifically, as shown in fig. 4 and 5, the sensor is a pressure sensor 32 or a photo resistor, and the pressure sensor 32 or the photo resistor is provided on the hand-held portion 111.

When the sensor is a pressure sensor 32: the user has a high probability of pressing the hand-held portion 111 with a hand during tangent operation due to the operation habit, and does not press the hand-held portion 111 with a hand during reverse operation. Therefore, the pressure sensor 32 is provided on the side or top of the hand-held portion 111 instead of the LED switch, and the LED lamp 31 is turned on when the user presses the hand-held portion 111 in a tangential manner, and the LED lamp 31 is turned off when the user does not press the hand-held portion 111 in a reverse manner. Through setting up pressure sensor 32, combine user's operation custom, need not the user and operate LED lamp 31 deliberately, alright realize that LED lamp 31 tangent is automatic to be lighted, the automatic purpose of going out of turn-over, is showing the improvement and controls the convenience.

When the sensor is a photoresistor: during tangent, the top of the handheld portion 111 faces upward and has a high probability of facing a light source in a processing environment, and during reverse tangent, the top of the handheld portion 111 faces downward and has a high probability of facing away from the light source. Therefore, the light sensitive resistor replaces an LED switch and is arranged at the top of the handheld portion 111, when the light sensitive resistor is tangent, the light sensitive resistor is in contact with the light source, the LED can be lightened, when the light sensitive resistor is reversely cut, the light sensitive resistor faces away from the light source, and the LED can be extinguished. Through setting up the photo resistance, along with the difference of scroll saw 100 user state, need not the user and operate LED lamp 31 wantonly, alright realize that LED lamp 31 tangent is automatic to be lighted, the automatic purpose of going out of surely, is showing to improve and controls the convenience.

In another embodiment, as shown in fig. 6 and 7, the sensor is a ball switch 33 or mercury switch connected in series in the circuit of the LED lamp 31. The ball switch 33 or the mercury switch is disposed near the connection terminal 35, and the connection terminal 35 is used to connect the motor line and the PCB.

In order to better realize the fixation of the ball switch 33 or the mercury switch in the casing 11, the lighting assembly 3 in this embodiment further includes a fixing seat 34 disposed in the casing 11, and the ball switch 33 or the mercury switch and the connection terminal 35 are fixed inside the casing 11 through the fixing seat 34.

Further, a ball switch 33 or a mercury switch is obliquely arranged in the housing 11 to realize automatic on/off of a circuit of the LED lamp 31 to trigger on/off of the LED lamp 31 when the jigsaw 100 is tilted by changing a use angle.

Specifically, the ball switch 33 is an angle tilt trigger switch, and has gravity adaptability, and when the illumination direction is upward toward the user, the ball switch can control the LED lamp to be turned on or off under the action of gravity. The working principle is that when the ball switch 33 is inclined, the ball in the switch rolls, contacts or leaves the guide pin to control the on or off of the circuit, and therefore the LED lamp 31 is turned on or off.

Through setting up ball switch 33, the position through the ball changes the break-make that just can realize the circuit to automatically, light LED lamp 31 when 100 tangents of jig saw, automatically extinguish LED lamp 31 when the backstepping, compare with prior art and need not to set up position sensor and acquire positional information, also need not to control LED lamp 31 through the controller, simple structure does not need complicated control process.

The mercury switch is also called a tilt switch, which is a kind of circuit switch, and generally comprises a glass tube, mercury, a fixed electrode, a lead wire, etc. in view of the fact that the surface tension and specific gravity of mercury in the tube are large and the mercury is rich in fluidity, so as long as the glass tube is slightly tilted, the position of mercury immediately changes due to the gravity and flows to a lower position in the glass tube, and contacts with the electrode in a surface contact manner, the switch closes a circuit, and the switch is opened.

By arranging the mercury switch, when the jig saw 100 inclines, the mercury switch outputs an accurate position signal to the controller after filtering, and the on-off of the LED lamp is controlled by the controller.

Example two

The present embodiment provides a jigsaw 100, the jigsaw 100 includes an illumination assembly 3, and the difference between the first embodiment and the second embodiment is that: when the jigsaw 100 is in the reverse cutting state, the lighting assembly 3 keeps being turned on downwards, namely, the back working area keeps being turned on, light can be prevented from directly entering human eyes, accordingly, the dizziness of operators can be avoided, and the comfort and the operation safety of the operators can be improved.

Specifically, as shown in fig. 8 and 9, the lighting assembly 3 includes an LED lamp 31, the LED lamp 31 is rotatably connected to the housing 11, and the LED lamp 31 is directed downward when in a tangential state. Under this structure, the LED lamp 31 has gravity adaptability, and when the illumination direction is upward toward the user, the LED lamp 31 can be turned over under the action of gravity. Therefore, when the jigsaw 100 is in the tangent state, the LED lamp 31 is turned on downward, and when the jigsaw 100 is in the reverse state, the LED lamp 31 is still turned on downward, so that light is prevented from entering human eyes.

In order to realize the rotatable connection between the LED lamp 31 and the housing 11, the lighting assembly 3 further includes a bracket 36, the bracket 36 is fixedly connected to the housing 11, and the LED lamp 31 is rotatably connected to the bracket 36. Preferably, a weight unit may be further disposed on the LED lamp 31 to shift the center of gravity of the LED lamp 31, so as to better ensure the downward irradiation state.

EXAMPLE III

The present embodiment provides a jigsaw 100, the jigsaw 100 includes an illumination assembly 3, and the difference between the first embodiment and the second embodiment is that: when the jigsaw 100 is in the reverse cutting state, the illumination assembly 3 irradiates upwards and has reduced brightness, namely irradiates towards a working area and has reduced brightness, and the mode can reduce the light intensity of the incident light to human eyes, thereby avoiding the dizziness of operators and improving the comfort and the operation safety of the operators.

Specifically, the lighting assembly 3 includes an LED lamp 31 and an optical filter, the LED lamp 31 is fixedly disposed on the housing 11, the optical filter is rotatably connected to the housing 11, the optical filter has a gravity adaptivity, and when the illumination direction is upward toward the user, the optical filter can be turned over under the action of gravity. One surface of the optical filter is a light-gathering surface, and the other surface of the optical filter is a scattering surface, when the jig saw 100 is in a tangent state, the light-gathering surface of the optical filter is positioned on the light-emitting side of the LED lamp 31, and has a focusing function; when the jigsaw 100 is in the reverse cutting state, the optical filter is turned over under the action of gravity, so that the scattering surface of the optical filter rotates to the light emitting side of the LED lamp 31, the light emitted by the LED lamp 31 is changed into hazy scattered light, and the injury of light intensity to human eyes is reduced. Optionally, in a specific structural arrangement, the light-gathering surface is an aspheric surface, and the scattering surface is a frosted surface.

Further, in order to realize the rotation of the optical filter, the structure of the optical filter is an eccentric structure, and the gravity center of the optical filter is deviated to one side of the light-gathering surface. Therefore, the light-gathering surface can rotate to the lower part and the scattering surface can rotate to the upper part during the reverse cutting.

Example four

The present embodiment provides a jigsaw 100, the jigsaw 100 includes an illumination assembly 3, and the difference between the first embodiment and the second embodiment is that: the sensor is a biometric unit.

Specifically, the biometric unit is a sound sensor or an image sensor provided inside the housing 11.

When the biometric unit is a sound sensor, the user may issue a "turn on" or "turn off" sound command to control the turning on or off of the LED lamp 31.

When the biometric unit is an image sensor, a camera may be mounted on the housing 11, the camera is electrically connected to the image sensor, and the LED lamp 31 may be automatically turned off when the camera recognizes human eyes.

No matter be sound sensor or image sensor, its concrete structure and theory of operation are comparatively ripe technique among the prior art, do not regard as the utility model discloses a protection is important, and here is no longer repeated.

It should be noted that the technical solutions of the above embodiments can also be used for other electric tools, such as an electric circular saw, a reciprocating saw, and the like.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. An electric power tool, characterized by comprising:

a housing including a hand-held portion for a user to hold;

a cutter extending out of the housing in a first direction;

the power tool further comprises an illumination assembly, and when the illumination direction of the illumination assembly faces the user, the illumination assembly turns over or is weakened in brightness or is turned off.

2. The power tool of claim 1, wherein the illumination assembly comprises:

the LED lamp is arranged on the shell;

and the sensor is connected with the LED lamp and used for detecting that the illumination direction faces the user.

3. The power tool of claim 1, wherein the light assembly is gravity-adaptive, such that the light assembly can flip or fade or extinguish under gravity when the illumination direction is upward toward the user.

4. The power tool of claim 2, wherein the sensor is a pressure sensor or a light sensitive resistor disposed on the hand-held portion.

5. The power tool of claim 2, wherein the sensor is a mercury switch connected in series in the circuit of the LED lamp.

6. The power tool of claim 2, wherein the sensor is an acoustic sensor or an image sensor disposed inside the housing.

7. The power tool of claim 3, wherein the illumination assembly comprises:

the LED lamp is rotationally connected with the shell, and when the illumination direction upwards faces the user, the LED lamp can turn over under the action of gravity.

8. The power tool of claim 7, wherein the illumination assembly further comprises:

the support is fixedly connected with the machine shell, and the LED lamp is rotatably connected with the support.

9. The power tool of claim 3, wherein the illumination assembly comprises:

the LED lamp is fixedly connected to the shell;

the optical filter rotates connect in the casing, the one side of optical filter is the condensing surface, and the another side is the scattering surface, works as the illumination direction upwards moves towards during the user, the optical filter can overturn so that the scattering surface is located under the action of gravity the light-emitting side of LED lamp.

10. The power tool of claim 3, wherein the illumination assembly comprises:

the LED lamp is fixedly connected to the shell;

the ball switch is connected in series in the circuit of the LED lamp, and when the illumination direction faces upwards to the user, the ball switch can control the LED lamp to be turned off under the action of gravity.

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