JP7238246B2 - Drawer tool for sheet metal - Google Patents

Description

Detailed description of the invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing tool for sheet metal that draws out recesses on a sheet metal surface during sheet metal work.

Conventionally, the inventor of the present application has proposed a sheet metal extractor (Patent Document 1) in which the extraction work is performed while applying delicate force to the tip of a bit welded to the sheet metal surface as a sheet metal extractor for extracting the concave portion of the sheet metal surface during sheet metal processing. ing.

Japanese Patent No. 5716889

Description of the invention

Problems to be Solved by the Invention

The drawing tool for sheet metal shown in Patent Document 1 includes a center shaft, a first operating means having a bit that is disposed at the tip of the center shaft and can be welded to the sheet metal surface, and a second operating means that pulls up the first operating means. a supporting member for supporting the first operating means; an energizing mechanism for energizing the bit; a leg for supporting the second operating means; and a power cord for supplying electricity to the energizing mechanism, It is used by connecting the other end of the power cord to the welding machine, energizing the bit, welding the tip of this bit to the sheet metal correction surface, pulling up the concave portion of the sheet metal correction surface, and then pulling up the bit after pulling up the concave portion. It is possible to perform a series of sheet metal work such as releasing welding.

By the way, in the sheet metal workshop where the sheet metal drawer is used, there is a considerable amount of dust, metal dust, dust, and the like. (2) It is required that troubles such as poor contact in the electrical system do not occur.

In general, sufficient lighting is not guaranteed in workplaces for sheet metal work. (2) the operator can clearly grasp the unevenness of the sheet metal surface by visual inspection;

In this regard, the sheet metal drawing tool disclosed in Patent Document 1 does not necessarily provide sufficient protection for the electrical system of the energizing mechanism that energizes the bit. (1) Dirt, metal dust, and dirt may enter or adhere to the electrical system of the energizing mechanism that energizes the bit, causing problems with the electrical system (for example, dust from the first through hole formed in the energizing mechanism). , metal dust, and dirt are mixed in, and dust, metal dust, and dirt adhere to the contact portion between the center shaft inserted through the first through hole and the current-carrying chip, which is a member of the current-carrying mechanism. (2) If the work area is dark, it is difficult to see the irregularities on the sheet metal surface, making it difficult to perform the sheet metal work efficiently. Even when illuminated, shadows from the center shaft and bit tend to appear on the sheet metal surface (see, for example, Fig. 23). Especially when the shadow overlaps with the unevenness of the sheet metal surface, small undulations on the sheet metal surface become difficult to see, making the sheet metal work smoothly. There is a risk that it will be difficult to do so and that it will adversely affect the sheet metal work (for example, see FIG. 24).

Accordingly, an object of the present invention is to prevent dust, metal dust, earth dust, etc. from entering and adhering to the electrical system, avoid troubles in the electrical system, reduce failures, excel in durability, and be easy to use. To provide a sheet metal drawer with good

Another object of the present invention is to ensure sufficient brightness during sheet metal work, to clearly see the unevenness of the sheet metal surface near the bit that requires sheet metal, and to prevent unevenness that requires sheet metal even in a dark work area. To provide a sheet metal drawer capable of efficiently performing sheet metal work while illuminating a part.

Another object of the present invention is to avoid shadows caused by the center shaft and the bit on the sheet metal part even when the sheet metal surface is illuminated, and to ensure sufficient brightness when performing sheet metal work, thereby ensuring welding. To provide a drawer for sheet metal working while illuminating the vicinity of a bit without shading.

Still another object of the present invention is to provide a drawer for sheet metal, which is capable of constructing a compact illumination unit by consolidating illumination members into a housing, freely adjusting the amount of light, and capable of accurately illuminating areas requiring sheet metal. to do.

ADVANTAGE OF THE INVENTION According to this invention, there exist the following effects.
(1) The housing is provided with a space (first space) and a power source accommodation space (second space) separated from the space by a partition wall. , The power source for the light source is housed in the second space, and the electrical system is blocked from being mixed with or adhered to by dust, metal powder, and dust, thereby avoiding troubles in the electrical system and reducing failures. To obtain a drawer for sheet metal which is excellent in durability and convenient to use.
(2) Sufficient brightness is guaranteed during sheet metal work, and the undulations of the sheet metal surface near the bits that require sheet metal can be clearly grasped. It is possible to obtain a drawing tool for sheet metal that can efficiently perform sheet metal work.
(3) Even if the sheet metal surface is illuminated, shadows caused by the center shaft and bit can be avoided, ensuring sufficient brightness when performing sheet metal work, and a state in which there is no shadow in the vicinity of the welding bit. It is possible to obtain a drawing tool for sheet metal that can be illuminated with light to perform sheet metal work.
(4) It is possible to obtain a drawing tool for sheet metal that can be compactly formed by integrating the illumination members constituting the illumination unit into a housing, and can freely adjust the amount of light to accurately irradiate a place that requires a sheet metal.

1 is a perspective view of a drawing tool for sheet metal according to the present invention, and is a perspective view showing a left hand gripping a handle that constitutes a first operating means and a right hand gripping a second operating means by imaginary lines (one-dot chain lines). FIG. It is the perspective view which looked up at the back surface of the drawing tool for sheet metals shown in FIG. 1 from the bottom face side. 2 is a rear view of the drawing tool for sheet metal shown in FIG. 1. FIG. Fig. 2 is a right side view of the drawing tool for sheet metal shown in Fig. 1; 2 is a bottom view of the drawing tool for sheet metal shown in FIG. 1. FIG. FIG. 4 is a cross-sectional view taken along the line XX of FIG. 3 with the flow of current during energization. FIG. 2 is a perspective view of the sheet metal drawer shown in FIG. 1 in a state in which the main body and legs are separated; FIG. 2 is an exploded perspective view showing constituent parts of a main body of the drawing tool for sheet metal shown in FIG. 1 ; 2 is a bottom view of the drawing tool for sheet metal shown in FIG. 1 with a light diffusion plate removed; FIG. It is a surface view of a printed circuit board in which an LED light source and the like are embedded. It is a back view of the printed circuit board in which the LED light source etc. were embedded. 11 is a right side view of FIG. 10; FIG. It is a schematic diagram showing wiring to an LED light source or the like. FIG. 4 is a circuit diagram of a lighting section that constitutes the lighting unit and includes an LED light source. It is a surface view of a light diffusion plate. It is a back view of a light-diffusion plate. 16 is a right side view of FIG. 15; FIG. Fig. 2 is a perspective view showing a main part of a sheet metal drawing tool incorporating an energization mechanism; FIG. 2 is an exploded perspective view showing a main part of a sheet metal drawing tool incorporating an energization mechanism, and showing components of the energization mechanism in an exploded manner. FIG. 19 is an enlarged schematic view of the YY section of FIG. 18; 1. It is a perspective view which shows the state which made the lighting unit of the drawer for sheet metals shown in FIG. 1 light. FIG. 2 is a perspective view of a main part of a sheet metal surface showing a state in which the illumination unit of the sheet metal drawer shown in FIG. FIG. 2 is a perspective view of a main part of the sheet metal surface showing a state in which the light diffusion plate is removed from the sheet metal drawer shown in FIG. be. The light diffusion plate is removed from the sheet metal drawer shown in Fig. 1, and the illumination unit is turned on. The shadows of the center shaft and the bit overlap the unevenness of the sheet metal surface, making it difficult to see the unevenness of the surface that requires the sheet metal. It is a principal part perspective view of the sheet-metal surface which shows the state which has become. FIG. 2 is a perspective view showing a usage state of the drawing tool for sheet metal shown in FIG. 1 ;

A drawing tool for sheet metal according to the present invention comprises a center shaft,
a first operating means having a bit disposed at the tip of the center shaft and capable of being welded to the sheet metal surface;
a second operating means for pulling up the first operating means;
an energization mechanism that energizes the bit;
A sheet metal drawer comprising legs for supporting the second operating means,
a housing that houses the lighting unit;
The sheet metal drawer is provided with the illumination unit that is housed in the housing and illuminates the sheet metal surface.

The housing is
a cavity accommodating the energization mechanism;
It is preferable that the lighting unit includes a power supply accommodating section that accommodates a power supply for a light source that constitutes the illumination unit.

The illumination unit is
a light source contained in the housing;
the light source power supply for supplying power to the light source;
A light diffusion plate that diffuses the light supplied from the light source,
fixing the light source to a printed circuit board;
It is preferable that the printed circuit board and the light diffusion plate are spaced apart from each other.

A drawing tool for sheet metal according to the present invention comprises a center shaft,
a first operating means having a bit disposed at the tip of the center shaft and capable of being welded to the sheet metal surface;
a second operating means for pulling up the first operating means;
an energization mechanism that energizes the bit;
A sheet metal drawer comprising legs for supporting the second operating means,
a housing that houses the lighting unit;
comprising the illumination unit that is housed in the housing and illuminates the sheet metal surface;
The housing is
a cavity accommodating the energization mechanism;
comprising a power source accommodating portion that accommodates a power source for a light source that constitutes the lighting unit;
The lighting unit is
a light source contained in the housing;
the light source power supply for supplying power to the light source;
A light diffusion plate that diffuses the light supplied from the light source,
fixing the light source to a printed circuit board;
disposing the printed circuit board and the light diffusion plate so as to correspond to each other;
a drawing tool for sheet metal that can supply the light supplied from the light source as diffused light obtained by transmitting (passing) through the light diffusion plate and supplying the diffused light as diffused light for irradiating a limited area in the vicinity of the bit; You can also

Further, the drawing tool for sheet metal according to the present invention comprises a center shaft,
a first operating means having a bit disposed at the tip of the center shaft and capable of being welded to the sheet metal surface;
a second operating means for pulling up the first operating means;
a support member that supports the first operating means;
an energization mechanism that energizes the bit;
A sheet metal drawer comprising legs for supporting the second operating means,
a housing that houses the lighting unit;
comprising the illumination unit that is housed in the housing and illuminates the sheet metal surface;
The housing is
a cavity accommodating the energization mechanism;
comprising a power source accommodating portion that accommodates a power source for a light source that constitutes the lighting unit;
The lighting unit is
a light source contained in the housing;
the light source power supply for supplying power to the light source;
A light diffusion plate that diffuses the light supplied from the light source,
fixing the light source to a printed circuit board;
disposing the printed circuit board and the light diffusion plate so as to correspond to each other;
The light supplied from the light source is diffused light obtained by passing through the light diffusion plate, and the diffused light can be supplied as diffused light that does not cause shadows in a limited area near the bit. can also

Furthermore, the drawing tool for sheet metal according to the present invention comprises a center shaft,
a first operating means having a bit disposed at the tip of the center shaft and capable of being welded to the sheet metal surface;
a second operating means for pulling up the first operating means;
a support member that supports the first operating means;
an energization mechanism that energizes the bit;
a leg supporting the second operating means;
A drawing tool for sheet metal comprising a power cord for supplying electricity to the energizing mechanism,
a housing that houses the lighting unit;
comprising the illumination unit that is housed in the housing and illuminates the sheet metal surface;
The housing is
a cavity accommodating the energization mechanism;
comprising a power source accommodating portion that accommodates a power source for a light source that constitutes the lighting unit;
The lighting unit is
a light source contained in the housing;
the light source power supply for supplying power to the light source;
A light diffusion plate that diffuses the light supplied from the light source,
fixing the light source to a printed circuit board;
disposing the printed circuit board and the light diffusion plate so as to correspond to each other;
The light supplied from the light source is diffused light obtained by passing through the light diffusion plate , the diffused light can be irradiated onto the sheet metal surface near the bit, and the diffused light is applied to the limited small area near the bit. It is also possible to provide a drawing tool for sheet metal that can be supplied as diffused light that is not shaded by the center shaft and the bit.

A partition may be formed in the housing, and the partition may separate the space from the power supply housing.

The power source accommodating portion may have an opening through which the light source power source can be inserted and removed, and the opening may be closed by a cover member.

Preferably, the proximal end of the second operating means is housed in the cavity of the housing.

An LED light source group in which the light sources are composed of LED light sources, the LED light sources are fixed to the printed circuit board arranged in the housing, and a plurality of the LED light sources are arranged on the printed circuit board at equal intervals. Good to configure.

It is preferable that the illumination unit includes an illuminance adjusting volume section, and the illuminance adjusting volume section can adjust the amount of light emitted from the LED light source.

It is preferable that the housing is supported by the second operation means supported by the leg, and the housing housing the lighting unit is moved by the leg via the second operation means. By supporting, the illumination unit is held at a predetermined distance from the sheet metal surface.

The housing includes the space for accommodating the current-carrying portion main body, a first insertion hole through which the center shaft is inserted, a second insertion hole through which a support screw for supporting the housing is inserted, and the second insertion hole. a third insertion hole through which a support shaft that supports a second lever that constitutes the operation means of is inserted; a through hole that exposes one end of the illuminance adjustment volume; a power supply housing; It can be formed with a step.

The second operating means includes a pair of arms extending to the left and right, the arms and the energizing portion main body being integrally formed, the arms being supported by the legs, and the energizing portion In a state in which the main body is accommodated in the space of the housing, the tip of the support screw inserted through the second insertion hole formed in the housing is screwed into the screw hole formed in the current-carrying section main body. In this state, the other end of the support screw remains in the second insertion hole, and the housing can be supported by the current-carrying portion main body.

Embodiments according to the present invention will be described below with reference to the drawings, together with a drawing tool for sheet metal, which is configured by housing the current-carrying part main body of the current-carrying mechanism in a housing and incorporating a lighting unit into the housing. Here, an example is shown in which an LED (Light Emitting Diode) light source is used as the light source, and a rechargeable battery is used as the power source for the light source.

[Illumination unit 70]
1 to 17, the illumination unit 70 illuminates the sheet metal surface and is accommodated in the housing 10. As shown in FIG.

The illumination unit 70 includes an illumination section main body 71 and a light diffusion plate 90 . Among them, the illumination unit main body 71 includes an LED light source 74 built in the housing 10 and a battery 80 for supplying power to the LED light source. The printed circuit board 72 to which the LED light sources are fixed and the light diffusion plate 90 are arranged in the housing so as to be separated from each other.

The lighting unit 70 includes an illuminance adjusting volume section 78, and the amount of light emitted from the LED light source 74 can be adjusted by the illuminance adjusting volume section.

The LED light source 74 is composed of six LED light sources, which are connected in parallel and arranged at equal intervals in the circumferential direction of the printed circuit board 72 arranged in the housing (Fig. 11, see FIG. 14). Thus, the LED light sources 74 constitute an LED light source group. Reference numeral 70A denotes two lead wires (power supply wires), and 70B denotes three lead wires (volume wires) (see FIG. 13). One end of the lead wire 70A is connected to the printed circuit board 72, and the other end (tip) is led to a guide hole (not shown) drilled in the end of the lateral wall 10D partitioning the housing 10. It is connected to the battery via a charging plug 85 . One end of the lead wire 70B is connected to the printed circuit board 72, and the other end (tip) is connected to the illuminance adjusting volume portion 78. As shown in FIG.

The printed circuit board 72 has a circular outer shape and is formed with an insertion hole in the center through which the center shaft 22 is inserted.

The printed circuit board 72 includes two capacitors 75A and 75B, a drive IC (FET) 76, and a variable resistor 77. As shown in FIG. The voltage applied to the drive IC (FET) 76 is adjusted by the variable resistor 77 to adjust the amount of light (brightness) of the LED light source 74 . That is, it is possible to adjust the light amount of the LED light source 74 by operating a knob (knob nut for operation) 79 for turning the illuminance adjusting volume portion 78 to adjust the voltage applied to the driving IC (FET) 76 . The capacitors 75A and 75B absorb noise.

Diffused light 300 obtained by transmitting (passing) the light supplied from the LED light source through the light diffusion plate is irradiated to the sheet metal surface near the bit 25 . The diffused light 300 is supplied as diffused light that does not cause shadows caused by the center shaft 22 of the sheet metal drawing tool and the bit 25 in a limited small area near the bit.

The light diffusing plate 90 is made of a translucent resin member and has an insertion hole in the center through which the center shaft 22 is inserted.

The printed circuit board 72 and the light diffusion plate 90 are formed with screw insertion holes at the same positions corresponding to each other, and the printed circuit board and the light diffusion plate are separated from each other by a set screw 94 inserted through the screw insertion hole to hold the housing. to be stopped.

[Housing 10]
1 to 8, the housing 10 accommodates the illumination unit 70 for illuminating the sheet metal surface. The housing 10 has partition walls (10C, 10D) formed from the vertical wall 10C and the horizontal wall (bottom wall) 10D that partition the housing. The partition partitions the housing into a space 10A and a power supply housing portion 17. As shown in FIG.

The housing 10 includes a space 10A capable of accommodating the main body 101 and the spring 24, a first insertion hole 11 through which the center shaft 22 is inserted, and a first insertion hole 11 through which a support screw 69 for supporting the housing is inserted. a first through hole 13 exposing one end of the charging plug 85; a hole 14, a second through hole 15 exposing one end of the illumination adjustment volume portion 78, a recess 16 accommodating shoulder portions of the arm rods 43A and 43B formed in the second operating means 30, A power source accommodating portion 17 for accommodating a battery 80 and a downward stepped portion 19 for accommodating the light diffusion plate 90 are formed.

The arm rods 43A and 43B and the current-carrying portion main body 101 are integrally formed, and the arm rods are supported by the legs 130. As shown in FIG. A threaded hole 104 formed in the current-carrying part main body at a tip end of the supporting screw inserted through the second insertion hole formed in the housing while the current-carrying part main body is housed in the space of the housing. In this state, the other end of the support screw stays in the second insertion hole, and the housing is supported by the current-carrying part main body.

The housing 10 is thus supported by the second operating means supported by the legs. Thus, the housing 10 containing the lighting unit 70 is supported by the leg 130 via the second operating means 30, and the lighting unit 70 is held at a predetermined distance from the metal plate surface. .

The power source accommodating portion 17 is formed with an opening 17A that allows insertion and removal of the battery (light source power source). The opening is closed by fixing the cover member 18 with a set screw 18A.

Reference numeral 59 denotes an E-ring that holds the support shaft 58 in a bearing portion 54 that supports the support shaft 58 in a state where the second lever 50 is pivotally supported, thereby preventing the support shaft from coming off (FIGS. 1 and 2). 2, 4, 6 and 8).

The charging plug 85 is a charging plug into which a charger cord is inserted for charging the battery 80 when it is exhausted.

[Energizing mechanism 100]
Further, the sheet metal drawer 1 incorporates an energization mechanism 100 .

8 and 18 to 20, the energization mechanism 100 is formed as an energization mechanism that is arranged at the tip of the center shaft 22 and energizes the bit 25 that can be welded to the sheet metal surface.

The energization mechanism 100 includes the energization portion main body 101 formed of a conductive member, and the energization portion main body has a first through hole 102 formed as a vertical hole in the center thereof, through which the center shaft 22 is inserted. Further, a pair of left and right second through holes 103A and 103B communicating with the first through holes are formed as horizontal holes in a direction perpendicular to the formation direction of the first through holes.

Conductive electrodes 105 are arranged in the second through holes 103A and 103B. A recess 101A for accommodating and holding the upper end of the spring 24 is formed in the lower portion of the main body 101 of the conducting portion. Reference numeral 104 denotes a screw hole formed below the second through hole 103 . The support screw 69 supports the conducting portion main body 101 within the housing 10 . The threaded hole 104 is screwed with the support screw 69 (the tip thereof) inserted through the insertion hole 12 formed in the housing 10 in a state in which the main body 101 of the current-carrying part is accommodated in the space 10A of the housing. do. In this state, the other end of the support screw 69 remains in the insertion hole 12, and the housing supports the current-carrying portion main body.

The conducting pin 105 includes a conducting tip 106 that contacts the center shaft 22 and a coil spring 107 that biases the conducting tip in the direction of the center shaft. is supplied to energize the bit (see FIGS. 6 and 20).

The conducting tip 106 has an elliptical cut surface formed by obliquely cutting a cylindrical member. are in contact with each other (see FIG. 20).

As described above, the second through-holes 103 are formed as lateral holes in the left-right direction of the current-carrying portion main body (see FIGS. 8, 18, and 19), and the center shaft 22 is connected to the first through-holes. The energizing pin 105 is disposed in each lateral hole while being inserted into the through hole 102 of the , and the energizing tip 106 opposed to the center shaft abuts the center shaft 22 with a uniform pressing force.

A spacer 108 made of an insulating material is interposed between the conducting tip and the coil spring so that the conducting tip 106 and the coil spring 107 are placed in a non-conducting state. Thus, no current flows through the coil spring 107 and the coil spring 107 is prevented from being burnt out by the current (no electricity flows through the coil spring 109 via the current-carrying tip 106).

The conducting pin 105 is inserted into the second through-hole 103, and with the conducting tip in contact with the center shaft, a screw 109 is screwed into the opening of the second through-hole to close the opening. are doing.

[Sheet metal drawer 1 incorporating illumination unit 70]
1 to 7 show a sheet metal drawer 1 in which the illumination unit 70 is incorporated. In this drawing tool 1 for sheet metal, the illumination unit 70 is incorporated in the housing 10 arranged in the center of the drawing tool 1 for sheet metal.

This drawing tool 1 for sheet metal can be manually operated with the center shaft 22 and the first operation means 20 having the bit 25 disposed at the tip of the center shaft and weldable to the sheet metal surface. Said second operating means 30 formed for lifting said first operating means 20, a support member 60 formed for supporting said first operating means 20, and said second operating means 30 , the housing 10, the lighting unit 70, the energizing mechanism 100 for energizing the bit 25, and a power cord for supplying electricity to the energizing mechanism 100 3. The first operating means 20 comprises the center shaft 22 and a handle 21 provided at one end of the center shaft 22 for rotating the center shaft.

As described above, the sheet metal drawer 1 includes the housing 10 that accommodates the illumination unit 70 that illuminates the sheet metal surface.

The illumination unit 70 includes the LED light source 74 built in the housing 10, the battery 80 that supplies power to the LED light source, and the light diffusion plate 90 that diffuses the light supplied from the LED light source. ing. The LED light source is fixed to the printed circuit board 72 . In the housing, the printed circuit board and the light diffusion plate are spaced apart from each other.

Diffused light 300 obtained by passing the light supplied from the light source through the light diffusion plate can be irradiated onto the sheet metal surface near the bit, and the diffused light 300 can be applied to the center shaft in a limited small area near the bit. The light is supplied as diffused light that is not shaded by the bit.

The first operating means 20 includes the center shaft 22 made of brass and the handle 21 provided at one end of the center shaft 22 for rotating the center shaft. are arranged.

That is, one end portion 22A of the center shaft 22 constituting the first operating means 20 is screwed into a threaded hole of a connection portion 21B formed continuously with the handle 21, while the tip of the center shaft 22 is threaded. A female threaded portion formed on the portion 22B is screwed into a male threaded portion provided on the proximal end portion of the bit 25 (see FIG. 6).

A threaded portion 23 is formed on the center shaft 22 from approximately the center to the proximal end portion thereof, and the threaded portion 23 is screwed into the support member 60 of the second operating means 30 so that the first operating means 20 is It is rotatably supported by the second operating means 30 .

A spring 24 is wound around the center shaft 22 . Here, the spring 24 is wound around the center shaft 22 with its upper end located in the recess 101A of the conducting section main body 101 and its lower end located on the top surface of the support member 60 . The spring 24 urges the second lever 50 downward, and the second lever 50 is lifted up while resisting the elastic force of the spring to perform the sheet metal work.

The second operating means 30 includes a main lever 40 , a second lever 50 , and the spring 24 interposed between the main lever 40 and the second lever 50 .

The main lever 40 includes a handle portion 41 formed by covering an insulating member, and a pair of left and right arm rods 43A extending in a direction perpendicular to the arrangement direction of the handle portion 41 and supported by the leg 130. 43B. One end of a power cord (terminal cord) 3 is fixed to the rear end of the main lever 40 and the other end of the power cord is connected to the welding machine 5 .

Fig. 6 shows the current flow during sheet metal surface correction work. At the time of energization, current flows through welding machine 5→power cord 3→main lever 40→energization portion main body 101→energization tip 106→center shaft 22→bit 25.

The second lever 50 includes a handle portion 51 formed by covering an insulating member, a hollowed portion 52 formed on the distal end side of the handle portion 51, and the second lever 50, which are pivotally supported. A bearing portion 54 for supporting the support shaft 58 is provided.

The second lever 50 has the support member 60 that supports the first operating means 20 . A central through hole (penetration portion) 62 is formed in the support member 60. A female threaded portion is formed in the central through hole 62, and the male threaded portion 23 of the center shaft 22 is screwed into the female threaded portion. .

The support member 60 is housed in the cutout portion 52 , and both ends of the support member 60 are supported by the frames 53 on both sides of the cutout portion 52 . Thus, the female threaded portion of the through hole (through portion) 62 of the support member 60 and the male threaded portion 23 of the center shaft 22 are screwed together, and the first operating means 20 is rotated to the second operating means 30. movably supported.

The main lever 40, the arms 43A and 43B, and the main body 101 of the conducting portion are formed integrally. (See Figure 8).

Thus, the sheet metal drawing tool supports the center shaft, the first operation means provided at the tip of the center shaft and having a bit that can be welded to the sheet metal surface, and the first operation means. a supporting member formed for the purpose, a second operating means formed for lifting the first operating means, a leg formed for supporting the second operating means, and an electrifying mechanism. A power cord for supplying electricity and the energization mechanism for energizing the bit are provided, and the first operation means includes the center shaft and a handle for rotating the center shaft provided at one end of the center shaft. are doing.

Further, the sheet metal drawer includes a housing for accommodating an illumination unit for illuminating the sheet metal surface, the illumination unit comprising a light source built in the housing, a light source power supply for supplying power to the light source, and the light source. A light diffusing plate for diffusing the light supplied from the light source is provided, and the printed circuit board and the light diffusing plate are arranged in the housing so as to be separated from each other . The housing containing the lighting unit is supported by the leg via the second operating means, and the lighting unit is held at a predetermined distance from the metal plate surface. The light supplied from the light source is transmitted through the light diffusing plate , and the obtained diffused light 300 can be irradiated onto the sheet metal surface near the bit, and the diffused light 300 is directed to the center shaft in a limited small area near the bit. The light is supplied as the diffused light 300 that is not shaded by the bit.

Reference numeral 21C is a lock nut for preventing loosening of the handle 21 and the shaft 22, 65 is a pulling allowance adjustment bolt for adjusting the lifting allowance when lifting the unevenness of the sheet metal surface, and 67 is for adjusting the lifting allowance when the operator grips the operating means by hand. The grip width adjusting bolt enables the grip width to be adjusted to a position where the second lever 50 is easy to hold. A wing nut 135 is used for inserting the arm rods 43A and 43B into the receiving portions of the leg 130 and connecting and fixing the arm and the leg.

1 sheet metal drawer 3 power cord 5 welding machine 10 housing 11 first through hole 12 second through hole 13 first through hole 14 third through hole 15 second through hole 16 fault 17 power supply housing REFERENCE SIGNS LIST 18 cover member 19 light diffusing plate accommodating stepped portion 20 first operating means 21 handle 22 center shaft 23 threaded portion 24 spring 25 bit 30 second operating means 40 main lever 50 second lever 52 cutout portion 53 frame 54 bearing portion 58 support Shaft 59 E-ring 60 Supporting member 62 Through hole 65 Pulling allowance adjusting bolt 67 Grip width adjusting bolt 69 Supporting screw 70 Lighting unit 71 Lighting main body 72 Printed circuit board 73 Through hole 74 LED light source 75 Chip capacitor 76 Driving IC
77 variable resistor 78 illuminance adjusting volume unit 79 knob 80 battery 85 charging plug 90 light diffusion plate 93 through hole 94 set screw 96 set screw 100 energizing mechanism 101 energizing unit body 101A recess 102 first through hole 103 second Through hole 104 Screw hole 105 Conductor 106 Conductor tip 107 Spring 108 Spacer 109 Screw 130 Leg

Claims (10)

a center shaft (22);
a first operating means (20) having a bit (25) disposed at the tip of the center shaft and weldable to the sheet metal surface;
a second operating means (30) for lifting said first operating means;
an energizing mechanism (100) for energizing the bit;
A sheet metal drawer comprising a leg (130) for supporting the second operating means,
a housing (10) supported by the second operating means supported by the leg and containing a lighting unit (70);
the illumination unit that is housed in the housing and illuminates the sheet metal surface;
The housing is
a space (10A) that accommodates the energization mechanism;
a power supply housing (17),
The lighting unit is
a light source (74) contained in said housing;
a power source (80) housed in the power housing and supplying power to the light source;
A light diffusion plate (90) that diffuses the light supplied from the light source,
The light source is composed of an LED light source, the LED light source is fixed to a printed circuit board (72) arranged in the housing, and a plurality of the LED light sources are arranged on the printed circuit board at equal intervals. configured as a group, wherein the printed circuit board and the light diffusion plate are spaced apart from each other ;
The housing containing the lighting unit is supported by the legs via the second operation means, thereby holding the lighting unit at a predetermined distance from the sheet metal surface. drawer. a center shaft (22);
a first operating means (20) having a bit (25) disposed at the tip of the center shaft and weldable to the sheet metal surface;
a second operating means (30) for lifting said first operating means;
an energizing mechanism (100) for energizing the bit;
A sheet metal drawer comprising a leg (130) for supporting the second operating means,
a housing (10) supported by the second operating means supported by the leg and containing a lighting unit (70);
the illumination unit that is housed in the housing and illuminates the sheet metal surface;
the housing
a space (10A) that accommodates the energization mechanism;
a power supply housing (17),
The lighting unit is
a light source (74) contained in said housing;
a power source (80) housed in the power housing and supplying power to the light source;
A light diffusion plate (90) that diffuses the light supplied from the light source,
The light source is composed of an LED light source, the LED light source is fixed to a printed circuit board (72) arranged in the housing, and a plurality of the LED light sources are arranged on the printed circuit board at regular intervals. configured as a group, wherein the printed circuit board and the light diffusion plate are spaced apart from each other;
holding the lighting unit at a predetermined distance from a sheet metal surface by supporting the housing containing the lighting unit by the leg via the second operation means;
A drawing tool for sheet metal, characterized in that the light supplied from the light source is passed through the light diffusing plate, and the obtained diffused light can be supplied as diffused light for irradiating a limited area near the bit. a center shaft (22);
a first operating means (20) having a bit (25) disposed at the tip of the center shaft and weldable to the sheet metal surface;
a second operating means (30) for lifting said first operating means;
a support member (60) for supporting the first operating means;
an energizing mechanism (100) for energizing the bit;
A sheet metal drawer comprising a leg (130) for supporting the second operating means,
a housing (10) supported by the second operating means supported by the leg and containing a lighting unit (70);
the illumination unit that is housed in the housing and illuminates the sheet metal surface;
The housing is
a space (10A) that accommodates the energization mechanism;
a power supply housing (17),
The lighting unit is
a light source (74) contained in said housing;
a power source (80) housed in the power housing and supplying power to the light source;
A light diffusion plate (90) that diffuses the light supplied from the light source,
The light source is composed of an LED light source, the LED light source is fixed to a printed circuit board (72) arranged in the housing, and a plurality of the LED light sources are arranged on the printed circuit board at equal intervals. configured as a group, wherein the printed circuit board and the light diffusion plate are spaced apart from each other ;
holding the lighting unit at a predetermined distance from a sheet metal surface by supporting the housing containing the lighting unit by the leg via the second operation means;
A drawing tool for sheet metal, characterized in that the light supplied from the light source is passed through the light diffusion plate, and the obtained diffused light can be supplied as diffused light that does not cause shadows in a limited area near the bit. a center shaft (22);
a first operating means (20) having a bit (25) disposed at the tip of the center shaft and weldable to the sheet metal surface;
a second operating means (30) for lifting said first operating means;
a support member (60) for supporting the first operating means;
an energizing mechanism (100) for energizing the bit;
a leg (130) supporting the second operating means;
A sheet metal drawer comprising a power cord (3) for supplying electricity to the energizing mechanism,
a housing (10) supported by the second operating means supported by the leg and containing a lighting unit (70);
the illumination unit that is housed in the housing and illuminates the sheet metal surface;
The housing is
a space (10A) that accommodates the energization mechanism;
a power supply housing (17),
The lighting unit is
a light source (74) contained in said housing;
a power source (80) housed in the power housing and supplying power to the light source;
A light diffusion plate (90) that diffuses the light supplied from the light source,
The light source is composed of an LED light source, the LED light source is fixed to a printed circuit board (72) arranged in the housing, and a plurality of the LED light sources are arranged on the printed circuit board at equal intervals. configured as a group, wherein the printed circuit board and the light diffusion plate are spaced apart from each other ;
holding the lighting unit at a predetermined distance from a sheet metal surface by supporting the housing containing the lighting unit by the leg via the second operation means;
The light supplied from the light source is allowed to pass through the light diffusion plate, and the obtained diffused light can be irradiated onto the sheet metal surface in the vicinity of the bit, and the diffused light is applied to the limited small area in the vicinity of the bit in the center shaft and the A drawer for sheet metal, characterized in that it can be supplied as diffused light that is not shaded by a bit. The housing (10) is formed with partitions (10C, 10D), and the partitions partition the space (10A) and the power source accommodating portion ( 17). The drawing tool for sheet metal according to any one of claims 1 to 3. 4. The power source accommodating portion (17) has an opening (17A) that allows insertion and removal of the power source (80), and the opening is closed by a cover member (18). 5. The drawing tool for sheet metal according to 5. 7. A sheet metal drawing tool according to claim 6, characterized in that the proximal end of said second operating means (30) is accommodated in said cavity (10A) of said housing (10). 8. The illumination unit (70) comprises an illumination adjustment volume section (78), and the illumination adjustment volume section is formed so as to be able to adjust the amount of light emitted from the light source (74). The drawer tool for sheet metal described in . The housing (10) includes the space (10A) that accommodates the power supply main body (101), a first insertion hole (11) through which the center shaft (22) is inserted, and a supporting shaft that supports the housing. A second through hole (12) through which a screw (69) is inserted, and a third through hole through which a support shaft (58) supporting a second lever (50) constituting the second operating means (30) is inserted. (14), a through hole (15) exposing one end of the illuminance adjustment volume (78), and a downward stepped portion (19) accommodating the light diffusion plate (90). Item 8. A drawing tool for sheet metal according to item 8 . The second operating means (30) comprises a pair of arms (43A, 43B) extending to the left and right, the arms and the main body (101) of the energizing section being integrally formed, and the arm The second insertion hole (12) formed in the housing (10) in a state in which the rod is supported by the leg (130) and the current-carrying part main body is housed in the space (10A) of the housing (10). The tip of the support screw (69) inserted through the wire is screwed into the screw hole (104) formed in the current-carrying part main body, and in this state, the other end of the support screw (69) is connected 10. The drawing tool for sheet metal according to claim 9 , wherein said housing is supported by said current-carrying part main body and remains in the insertion hole.

Images