CN223529623U - Mask for welder - Google Patents

Abstract

The application relates to an electric welding mask which comprises a mask shell, goggles, a searchlight and a control system, wherein the goggles are arranged on the mask shell, the goggles can be switched to a transparent state or a non-transparent state, and the searchlight is provided with an LED lamp group. The LED power supply unit supplies power to the LED lamp group through the LED driving unit, the arc light detection unit is used for detecting electric welding arc light, the ambient light detection unit can detect ambient light intensity, the control processing unit is provided with a first input end connected with the arc light detection unit, a second input end connected with the ambient light detection unit, a first output end connected with the LED driving unit and a second output end connected with the electric control filter, in a normal state, the control processing unit receives an output signal of the ambient light detection unit and further adjusts the brightness of the LED lamp group, and when the electric welding arc light occurs, the control processing unit receives the output signal of the arc light detection unit, turns off the LED lamp group and switches the electric control filter from a transparent state to a non-transparent state.

Description

Mask for welder

Technical Field

The application relates to the technical field of welding protection equipment, in particular to an electric welding mask.

Background

Welding masks are capable of protecting operators from spark-overspray and vision, and conventional welding masks have goggles mounted to a mask housing with the glass lenses on the goggles maintained in a non-transparent state.

In the welding field, an operator needs to frequently remove the welding mask from the sight line to confirm the welding position, and the frequent repeated actions can cause local strain on the body, so that the operator is tired rapidly, and the working efficiency is affected. In addition, the operation is inconvenient in a narrow space.

Disclosure of utility model

Accordingly, it is desirable to provide an electric welding helmet that addresses the above-described issues.

The application provides an electric welding mask, which comprises a mask shell, goggles arranged on the mask shell, a searchlight and a control system, wherein the goggles are provided with an electric control optical filter which can be switched into a transparent state or a non-transparent state, the searchlight is provided with an LED lamp group, and the control system comprises:

An LED power supply unit;

An LED driving unit, via which the LED power supply unit supplies power to the LED lamp group;

An arc light detection unit for detecting electric welding arc light;

An ambient light detection unit for detecting an ambient light intensity;

The control processing unit is provided with a first input end connected with the arc light detection unit, a second input end connected with the ambient light detection unit, a first output end connected with the LED driving unit and a second output end connected with the electric control filter;

And when electric welding arc light occurs, the control processing unit receives the output signal of the arc light detection unit, turns off the LED lamp group and simultaneously switches the electric control optical filter from a transparent state to a non-transparent state.

The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions.

Optionally, the control system includes a manual adjustment unit and a switching unit, where the control processing unit receives an output signal of the manual adjustment unit, and outputs a control signal to adjust brightness of the LED lamp set, and the switching unit is used to switch the control processing unit to receive an output signal of the ambient light detection unit or the manual adjustment unit.

Optionally, the switching unit and the manual adjustment unit are respectively integrated with two trigger keys.

Optionally, the switching unit and the manual adjustment unit are integrated in the same trigger key. The control processing unit is configured to distinguish the switching unit from the manual adjustment unit according to the trigger duration of the trigger key.

Optionally, the ambient light detection unit is indirectly connected to the second input terminal through an optical signal processor, and the optical signal processor is used for converting an optical signal into an electrical signal.

Optionally, the control processing unit includes a microcontroller.

Optionally, the ambient light detection unit comprises an ambient light sensor.

Optionally, the control system comprises a power supply unit for providing electrical energy and being connected to the arc detection unit, the ambient light detection unit, and the control processing unit at the same time.

The electric welding mask has at least the following technical effects:

The electric welding mask can be adaptively matched with an operator to work when being worn, so that the operation convenience is improved. The electric welding arc light protective device comprises goggles which darken to protect vision and automatically extinguish searchlight when the electric welding arc light appears, and the goggles become transparent to facilitate observation and the searchlight is automatically opened when the electric welding arc light disappears. On the basis, the control processing unit correspondingly adjusts the brightness of the LED lamp group according to the ambient light intensity through the LED driving unit, so that the self-adaptive illumination of the scene is realized.

Drawings

FIG. 1 is a schematic view of a welding mask according to an embodiment of the present application;

FIG. 2 is an assembled schematic view of FIG. 1;

FIG. 3 is a schematic block diagram of a control system in a welding helmet according to an embodiment of the present application;

FIG. 4 is a schematic block diagram of a control system of an electric welding mask according to an embodiment of the present application;

FIG. 5 is a schematic block diagram of a control system of an electric welding mask according to an embodiment of the present application;

FIG. 6 is a schematic circuit diagram of the switching unit and/or manual adjustment unit of FIG. 4;

FIG. 7 is a schematic circuit diagram of the ambient light detection unit of FIG. 3;

Reference numerals in the drawings are described as follows:

10. The mask shell, 11, the searchlight, 12, the goggles, 21, the LED driving unit, 22, the electric control filter, 23, the arc light detecting unit, 24, the ambient light detecting unit, 31, the LED lamp group, 32, the LED power supply unit and 40, the control processing unit;

51. Manual regulation unit, 52, switching unit, 54, power supply unit.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

In the present disclosure, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implicitly indicating the number, order of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present disclosure, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements expressly listed but may include other elements not expressly listed or inherent to such article or apparatus.

In the present application, the terms "corresponding", "matched", "compatible", such as "B corresponding to a", "a corresponding to B", or "B corresponding to a", mean that B has a correspondence with the shape, position, or function of a, from which B can be determined. Determining B from a does not mean determining B from a alone, but may also be based on a and/or other information.

Referring to fig. 1-3, an embodiment of the application provides an electric welding mask, which comprises a mask housing 10, goggles 12 mounted on the mask housing 10, a searchlight 11, and a control system, wherein the goggles 12 have an electric control filter 22 capable of being switched to a transparent state or a non-transparent state, and the searchlight 11 has an LED lamp set 31.

The control system comprises an LED driving unit 21, an LED power supply unit 32 for supplying power to the LED lamp set 31 via the LED driving unit 21, an arc detection unit 23 for detecting an arc of an electric welding, an ambient light detection unit 24 for detecting an ambient light intensity, and a control processing unit 40.

The control processing unit 40 has a first input terminal connected to the arc detection unit 23, a second input terminal connected to the ambient light detection unit 24, a first output terminal connected to the LED driving unit 21, and a second output terminal connected to the electrically controlled filter 22.

In a normal state, the control processing unit 40 receives the output signal of the ambient light detecting unit 24, and then outputs a control signal to adjust the brightness of the LED lamp set 31, and when electric welding arc light occurs, the control processing unit 40 receives the output signal of the arc light detecting unit 23, turns off the LED lamp set 31, and simultaneously switches the electric control filter 22 from a transparent state to a non-transparent state.

In this embodiment, the LED lamp set 31 is used as a lighting element of the searchlight 11, and the LED driving unit 21 may be implemented based on an LED power adjustment driving circuit in the prior art, for example, the LED power adjustment driving circuit may be enabled to input PWM signals with different duty ratios, so as to implement brightness adjustment (including turning off) of the LED lamp set 31. The electrically controlled filter 22 may be implemented based on a liquid crystal display element, the arc detection unit 23 may be implemented by adjusting the sensitivity of a light sensor, the ambient light detection unit 24 may be implemented based on an ambient light sensor, and the control processing unit 40 may be implemented based on a microcontroller (Microcontroller Unit, MCU).

In this embodiment, the welding mask can be adapted to work with the operator when the operator wears the welding mask. When the arc light is generated, the goggles 12 darken to protect the sight and the searchlight 11 is automatically extinguished, and when the arc light is disappeared, the goggles 12 become transparent to be convenient for observation and the searchlight 11 is automatically turned on. On the basis, the control processing unit 40 correspondingly adjusts the brightness of the LED lamp group 31 according to the ambient light intensity through the LED driving unit 21, so as to realize the self-adaptive illumination of the scene.

For a specific workflow, the arc detection unit 23 outputs a first signal when detecting an arc of electric welding, and the ambient light detection unit 24 outputs a second signal representing the intensity of ambient light from the intensity of ambient light when detecting the ambient light. The control processing unit 40 is configured to control the electrically controlled filter 22 to enter the non-transparent state and control the LED driving unit 21 to turn off the LED lamp group 31 at the same time when the first input terminal receives the first signal, control the electrically controlled filter 22 to enter the transparent state and control the LED driving unit 21 to turn on the LED lamp group 31 at the same time when the first input terminal does not receive the first signal, and adjust the brightness of the floodlight 11 according to the magnitude of the second signal when the second input terminal receives the second signal.

In particular, the LED lamp set 31 of the searchlight 11 may be turned on by an ambient light intensity detection configuration, for example, when the photoelectric signal received by the second input terminal is less than 0.125V. The signal of the ambient light sensor changes linearly with the ambient light intensity, and in the initial configuration, the control processing unit 40 may store the integrated signal of the ambient light and the reflected light as a current reference ambient light signal, where the reference ambient light signal is used as a threshold value for whether to turn on the LED lamp set 31 in the subsequent control process.

The shift position for adjusting the brightness of the LED lamp group 31 may be set to multiple shift positions, for example, three shift positions, according to the need. In the on state of the LED lamp set 31, the control processing unit 40 utilizes the integrated ambient light signal to dynamically adjust, for example, output PWM signals with different duty ratios, and the LED driving unit 21 controls the LED lamp set 31 to display different expected brightness, so as to automatically adjust the brightness shift of the searchlight 11 according to the environmental intensity. It will be appreciated that the stronger the ambient light intensity, the lower the illuminance of the LED light set 31. When the ambient light is brighter or even when no illumination is needed, the control processing unit 40 adjusts the brightness of the LED lamp set 31 to be darker or off accordingly.

Referring to fig. 4, in some embodiments, the control system includes a manual adjustment unit 51 and a switching unit 52, where the control processing unit 40 receives an output signal of the manual adjustment unit 51, and outputs a control signal to adjust the brightness of the LED lamp set 31, and the switching unit 52 is configured to switch the control processing unit 40 to receive an output signal of the ambient light detection unit 24 or the manual adjustment unit 51.

On the basis of automatically controlling the on-off of the searchlight 11, the embodiment provides a technical scheme for manually adjusting different illumination of the searchlight 11. When in use, the control processing unit 40 can receive the output signal of the manual adjustment unit 51 through the control switching unit 52, so as to drive the manual adjustment unit 51 to adjust the brightness of the LED lamp set 31 circularly according to the preset gear (for example, two gears).

In some embodiments, the switching unit 52 and the manual adjustment unit 51 are respectively integrated with two triggering keys, namely a first triggering key and a second triggering key, for switching two working states of the control system. The two working states of the control system can be summarized into a manual state, i.e. the illuminance of the LED lamp set 31 is manually and cyclically adjusted according to a preset gear by the manual adjusting unit 51 integrated with the second trigger key, and an automatic state, i.e. the foregoing embodiment. In the manual state, the illuminance shift where the LED lamp group 31 is dark or extinguished may also be set as required.

Referring to fig. 4-6, in some embodiments, the switching unit 52 and the manual adjustment unit 51 are integrated into the same trigger key. The control processing unit 40 is configured to distinguish the switching unit 52 from the manual adjustment unit 51 according to the trigger time period of the trigger key. For example, the long-time triggering of the triggering key is the switching unit 52, the short-time triggering is the manual adjusting unit 51, and the long-time and short-time threshold dividing can be set as required.

As shown in fig. 6, the switching unit 52 and the manual adjustment unit 51 may be implemented based on a trigger circuit including a trigger KEY, the trigger circuit including a first resistor R1, a first capacitor C1, and the trigger KEY, all having opposite first and second ends. Wherein the first terminal of the first resistor R1 is connected to a high level (e.g., +3.6v). The first end of the first capacitor C1 is connected with the second end of the first resistor R1, the second end of the first capacitor C1 is grounded (signal ground), and the first end and the second end of the trigger KEY are respectively connected with the first end and the second end of the first capacitor C1. The second end of the first resistor R1 is simultaneously connected to the input port PA01 of the control processing unit 40, and is used for transmitting an output signal to the control processing unit 40 after the trigger KEY is triggered by a user.

In some embodiments, the control processing unit 40 is configured to enter the auto-sleep state if no arc occurs (no received signal at the first input) and the ambient light intensity is unchanged (no received signal at the second input) for an expected time (e.g., 10 minutes). And either of the switching unit 52 and the manual adjustment unit 51 is triggered to exit the sleep state. It will be appreciated that if no ambient light remains during the expected time, the spatial position is unchanged, and no arc light appears, indicating that no welding operation is performed, at this time, the control system is put into an automatic sleep state, the control of the electronic control filter 22 is finished, and the searchlight 11 is turned off, so that the power consumption is reduced. The configuration of the control processing unit 40 can be realized according to the control logic read-write related to the singlechip in the prior art.

Referring to fig. 5, the control system includes a power supply unit 54, and the power supply unit 54 is configured to supply power and is connected to the arc detection unit 23, the ambient light detection unit 24, and the control processing unit 40 at the same time.

Referring to fig. 7, the ambient light detection unit 24 is implemented based on including an ambient light detection circuit including an ambient light sensor P5, a second resistor R2, and a second capacitor C2. The positive electrode of the ambient light sensor P5 is connected to a high level (e.g., +3.6v), the negative electrode of the ambient light sensor P5 is grounded via the second resistor R2, and the second capacitor C2 is connected in parallel with the second resistor R2. The negative electrode of the ambient light sensor P5 is connected to the second input PA02 of the control processing unit 40.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.

Claims (8)

1. A welding mask, comprising a mask housing, goggles mounted on the mask housing, a searchlight, and a control system, wherein the goggles have an electrically controlled filter switchable between a transparent and a non-transparent state, and the searchlight has an LED light assembly, characterized in that the control system comprises: LED power supply unit; LED driving unit, the LED power supply unit supplies power to the LED lamp group through the LED driving unit; Arc light detection unit, used to detect welding arc light; Ambient light detection unit, used to detect ambient light intensity; The control processing unit has a first input terminal connected to the arc light detection unit, a second input terminal connected to the ambient light detection unit, a first output terminal connected to the LED driving unit, and a second output terminal connected to the electronically controlled filter. Under normal conditions, the control processing unit receives the output signal from the ambient light detection unit and then outputs a control signal to adjust the brightness of the LED light group. When welding arc light occurs, the control processing unit receives the output signal from the arc light detection unit, turns off the LED light group, and simultaneously switches the electronically controlled filter from a transparent state to a non-transparent state. 2. The welding mask as described in claim 1, characterized in that the control system includes a manual adjustment unit and a switching unit, the control processing unit receives the output signal of the manual adjustment unit and then outputs a control signal to adjust the brightness of the LED light group; the switching unit is used to switch the control processing unit to receive the output signal of the ambient light detection unit or the manual adjustment unit. 3. The welding mask as described in claim 2, wherein the switching unit and the manual adjustment unit are respectively integrated into two trigger keys. 4. The welding mask as described in claim 2, wherein the switching unit and the manual adjustment unit are integrated into the same trigger key. 5. The welding mask as described in claim 1, wherein the ambient light detection unit is indirectly connected to the second input terminal via an optical signal processor, the optical signal processor being used to convert the optical signal into an electrical signal. 6. The welding mask as claimed in claim 1, wherein the control processing unit includes a microcontroller. 7. The welding mask as described in claim 1, wherein the ambient light detection unit includes an ambient light sensor. 8. The welding mask as claimed in claim 1, wherein the control system includes a power supply unit, the power supply unit being used to provide electrical energy and simultaneously connected to the arc light detection unit, the ambient light detection unit, and the control processing unit.