JP2004087560A - Power supply apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply apparatus that can efficiently be subjected to parameter setting work to bring efficiency to the parameter setting work. <P>SOLUTION: At least part of both sides of a cover 14 is almost in contact with a case 2 in a state of covering a panel 12 having a plurality of controllers to set characteristics of a power supply circuit. The cover 14 at its contact part is fitted to the case freely turnably around an axial line nearly perpendicular to both the sides. A plurality of round holes 26 are formed at a circumference around the axial line of the case 2 and the round holes 26 are formed in such a way that each of projections 22 can be intruded to each of the holes 26. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a power supply device, for example, to a power supply device for welding.
[0002]
[Prior art]
There are various types of welding, such as manual welding and TIG welding. Power supply devices for welding machines corresponding to these types are used. The basic configuration is as follows. The commercial AC voltage is converted into a DC voltage by the input side rectifier and the smoothing capacitor. This DC voltage is converted into a high-frequency voltage by the inverter. This high frequency voltage is transformed into a predetermined voltage by the transformer. The transformed high-frequency voltage is converted into a DC voltage by an output rectifier and supplied to a load. If necessary, the DC voltage is converted to a low-frequency AC voltage and supplied to a load. In this power supply device, since the DC voltage is converted into the high-frequency voltage by the inverter, a small transformer can be used, and the whole power supply device can be downsized.
[0003]
As described above, the types of welding include manual welding, DC TIG welding, and AC TIG welding.
[0004]
When performing manual welding, the welding power supply device has a constant current output characteristic in which the output current is constant even when the output voltage fluctuates. An output current setting device for setting the output current value is provided on a panel of the power supply device for manual welding. In the case of manual welding, at the start of welding, or when, for example, the load formed by the torch and the base material is short-circuited, a current larger than the output current is supplied to perform a hot start that favorably generates an arc. Sometimes. A hot start setting device for setting a current flowing at the time of the hot start is provided on the panel. The panel is also provided with a display for displaying output voltage and output current.
[0005]
DC TIG welding is suitable for welding stainless steel, for example, and has constant current output characteristics. Also, hot start may be required as in manual welding. In DC TIG welding, when welding a flat base material, the output current is set to a constant value. However, when welding a base material such as a pipe, particularly when welding the bottom of a pipe, if a constant output current is supplied, the melt from the pipe falls from the base material and performs re-welding. Or the melt may adhere to the TIG welding electrode of the torch and damage the welding electrode. Therefore, the output current is changed to a pulse current, and when the base current IB of the pulse current is flowing, for example, a molten pool formed at the bottom of the pipe is cooled, a molten material falls from the molten pool, or a torch is welded. It prevents the melt from adhering to the electrodes.
[0006]
In TIG welding, as a method of generating an arc, a touch start method in which a welding electrode and a base material are short-circuited, a low current is applied to them, and then the welding electrode is separated from the base material to generate an arc between the two. And a high-frequency start method in which a welding electrode is separated from a base material in advance and a high frequency and a high voltage of 5 to 20 kV are applied between the two at 1 to 3 MHz, for example, to generate an arc.
[0007]
An output current setting device for setting an output current and a hot start setting device are provided on a panel of the DC TIG welding power supply device. Furthermore, an up-slope time for starting from a starting current when supplying a pulse current as an output current to a maximum pulse current (set output current), and a down-slope time for decreasing from the maximum pulse current to a crater current flowing at the end of welding. , And an up slope and a down slope time setting device for respectively setting are also provided on the panel. Further, a pulse frequency setting device for setting the frequency of the pulse current and a pulse switching device for switching between supplying the pulse current and supplying the DC current are provided on the panel. Further, an arc start switch for switching between touch start and high frequency start is also provided on the panel. In addition, a display for displaying the output voltage and the output current is also provided on the panel.
[0008]
AC TIG welding is used, for example, when welding aluminum. Aluminum has a high entry point film with a high melting point, so when a DC power supply is used to apply a current to the base material as the positive electrode and the welding electrode as the negative electrode (in the case of positive polarity), the base material will become hot. In addition, welding cannot be performed. Therefore, when an electric current is applied with the base material as the negative electrode and the electrode as the positive electrode (negative polarity), thermoelectrons are emitted from the base material, the oxide film is removed (cleaning effect), and welding becomes possible. However, when the polarity is positive, there is a cooling effect of cooling the electrode. Thus, in the case of AC TIG welding, both a cleaning effect and a cooling effect can be obtained. By adjusting the time of the positive polarity and the time of the negative polarity, both effects can be brought into a desired state.
[0009]
There are AC / DC TIG welders that can be used for both AC TIG welding and DC TIG welding. On the panel of the power supply unit for AC / DC TIG welding machine, for DC TIG welding, output current setting device, hot start setting device, up slope time and down slope time setting device, pulse frequency setting device, and presence / absence of pulse current are switched. A pulse switch, an arc start switch for switching between touch start and high frequency start, an output voltage and output current indicator are provided on the panel, and for AC TIG welding, the frequency of AC welding voltage And a waveform balance setting device for setting the ratio between the positive polarity and the negative polarity are also provided on the panel.
[0010]
When these various power supply devices for welding are manufactured individually, the manufacturing is troublesome. Since various settings are required in the various weldings described above, if one power supply device that can be used for various weldings is to be manufactured, a large number of setting devices are required on the panel, and the configuration is complicated. In addition, the setting of each setting device becomes troublesome.
[0011]
Therefore, the present applicant has proposed a power supply device as disclosed in Japanese Patent Application Laid-Open No. 10-3079. This power supply device has a welding process setting push button for setting a welding process such as manual welding or DC TIG welding on a panel, a parameter setting push button for selecting parameters of each welding process after selecting a welding process, and one The output current, the output voltage and the like are adjusted by this setter to cope with various types of welding. The panel is further provided with a process display, a parameter display, an up / down push button, an output voltmeter, and an output ammeter.
[0012]
By the way, the power supply device for a welding machine is used not only indoors but also outdoors, so it is necessary to take measures against drip and dust. Therefore, a drip-proof and dust-proof cover is provided on the panel.
[0013]
[Problems to be solved by the invention]
However, in such a power supply device for a welding machine, when setting the welding process, parameters, and output, the cover must be opened one by one, and the setting operation cannot be performed efficiently.
[0014]
SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply device capable of performing a setting operation efficiently.
[0015]
[Means for Solving the Problems]
The power supply according to the present invention has a case. A panel is arranged in a part of this case. This panel is provided with a plurality of operators for setting characteristics of a power supply circuit arranged in the case. A cover covers this panel. When the cover covers the panel, at least a part of the both sides substantially contacts the case, and the cover is attached to the case so as to be rotatable around an axis substantially perpendicular to the both sides at the contact portion. For example, a shaft may be protruded from both sides of the cover along the axis, and bearing portions for rotatably supporting the shaft may be provided on the case side. Conversely, both sides of the cover may be provided along the axis from the case. The shaft may be protruded toward the surface, and shaft holes into which these shafts are inserted may be formed on both side surfaces of the cover. On one of the side surface of the case and the cover, at least one projection is located on a circumference centered on the axis. A plurality of convex portions may be provided on the circumference at equal intervals, for example. On one of the side surface of the case and the cover, a plurality of concave portions into which the convex portions can enter are located on the circumference. The convex portion enters one concave portion while the cover covers the panel, and as the cover moves in a direction to open the panel, the convex portion sequentially enters the concave portion at a position where the concave portion changes. , Each of the concave portions is provided.
[0016]
In the power supply device configured as described above, for example, when the cover is opened in order to operate the operation element, the concave portions into which the convex portions enter are sequentially changed. When the cover is opened to a predetermined angle, the cover is stopped at the position of the predetermined angle because the convex portion has entered the concave portion, and the cover naturally closes even if the hand is released from the cover. There is no. Therefore, since it is not necessary to hold the cover by hand, the setting of the operation device can be easily performed.
[0017]
Further, a cable can be introduced from the outside of the case to the inside through an introduction port provided in the case. In this case, a first clamp portion is formed near the inlet and integrally with the case. The first clamp portion is formed in a shape surrounding substantially half of the cable in the circumferential direction. A second clamp surrounding the other half of the cable is attached to the first clamp so as to surround the entire circumference of the cable together with the first clamp.
[0018]
With this configuration, since the first clamp portion is formed integrally with the case, the second clamp portion is brought into contact with the cable so as to press the cable against the first clamp portion, and the second clamp portion is connected to the first clamp portion. By attaching to the cable, the cable can be clamped. Therefore, the clamping operation can be easily performed.
[0019]
The case is a front part and a back part arranged to face each other at an interval, and is located between the front part and the back part, and the front part and the front part so as to connect the front part and the back part. And an intermediate portion that is in contact with the back surface portion. A sheet is disposed in the intermediate portion so as to cover a power supply circuit component in the intermediate portion. The sheet has a first tongue extending from the upper portion thereof into the front portion beyond the contact surface between the front portion and the middle portion, and from the upper portion of the sheet exceeding the contact surface between the middle portion and the rear portion. And a second tongue piece extending into the back surface portion.
[0020]
With this configuration, for example, even if rainwater enters from the contact surface between the front portion and the intermediate portion, the rainwater flows to the sheet side via the first tongue piece, so that the rainwater flows to the power supply circuit components surrounded by the sheet. There is no contact. The same applies to the case where rainwater enters from the contact surface between the back part and the middle part.
[0021]
Further, similarly to the above, when the case includes a front portion, a back portion, and an intermediate portion, one of the contact surfaces between the front portion and the intermediate portion includes a contact surface between the front portion and the intermediate portion. The first protruding portion can be made to protrude toward the other side. In this case, the other of the contact surfaces between the front part and the intermediate part is provided with a first recess into which the first protrusion enters. A second protruding portion protrudes from one of the contact surfaces between the rear portion and the intermediate portion toward the other contact surface between the rear portion and the intermediate portion. A second concave portion into which the second protrusion enters is provided on the other of the contact surfaces between the rear portion and the intermediate portion.
[0022]
With this configuration, the first projection is engaged with the first recess, and the second projection is engaged with the second recess. Similarly, the joining between the rear portion and the intermediate portion does not shift.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
The power supply device according to one embodiment of the present invention is, for example, a power supply device for welding, and has a case 2 as shown in FIG. The case 2 includes a front part 4, a back part 6, and an intermediate part 8, and is made of synthetic resin.
[0024]
The front part 4 and the back part 6 are formed in a substantially flat rectangular parallelepiped shape having the same outer dimensions. The front part 4 and the back part 6 are arranged so as to face each other at a predetermined interval.
[0025]
An intermediate portion 8 is arranged so as to contact the back of the front portion 4 and the front of the back portion 6. The intermediate portion 8 is formed in a substantially rectangular parallelepiped shape, and includes a right intermediate portion 8a and a left intermediate portion 8b as shown in FIGS. As shown in FIG. 3, the right and left middle portions 8a and 8b are approximately U-shaped with a vertical cross-section turned sideways, and their front ends are abutted. A power supply circuit (not shown) of the power supply device for welding is arranged in the intermediate portion 8. The handle 9 is formed so as to be located at the center of the upper portion of the intermediate portion 8 in a state where the right and left intermediate portions 8a and 8b are abutted.
[0026]
As shown in FIG. 4, the upper part of the front part 2 is formed with a recess 10 which is directed slightly obliquely downward. In this recess 10, a panel 12 is arranged as shown in FIG. The panel 12 is provided with operators for setting various parameters for adjusting the characteristics of the power supply device, for example, switches and a volume (not shown).
[0027]
A dustproof cover 14 is attached to the recess 10 so as to cover the panel 12 as shown in FIG. Although the cover 14 is transparent and is not shown in FIG. 4, the setting state of the panel 12 can be checked from the outside even when the cover 14 covers the panel 12. In FIG. 4, reference numeral 16 denotes a knob of one operation element, which protrudes outward from the cover 14 so as to be operable from the outside even when the cover 14 covers the panel 12.
[0028]
As shown in FIG. 6, discs 18 are formed on upper portions of both sides of the cover 14. The shafts 20, 20 project outward from the centers of the disks 18, 18 substantially perpendicularly to both sides. As shown in FIG. 7, a plurality of projections 22 project outward at an equal angle on a circumference centered on the centers of the shafts 20, 20.
[0029]
On the other hand, in the recess 10, when the cover 14 covers the panel 12, the shafts 20, 20 are rotatable at positions on both side surfaces corresponding to the shafts 20, 20 of the cover 14 as shown in FIG. 5. Bearings to be supported, for example, shaft holes 24, 24 are formed. Around the shaft holes 24, 24, concave portions, such as circular holes 26, into which the respective convex portions 22 can enter and engage, are formed so as to correspond to the respective convex portions 22. The angle formed by the circular holes 26 is equal to the angle formed by the protrusions 22.
[0030]
Since the shafts 20 and 20 of the cover 14 are inserted into the shaft holes 24 and 24, the cover 14 rotates around the shafts 20 and 20 and the cover 14 can open and close the panel 12 as shown by a dotted line in FIG. It is. In addition, during this rotation, the circular holes 26 with which the respective convex portions 22 engage are sequentially changed, so that the cover 14 can be fixed at predetermined angles. Therefore, as shown in FIG. 1, the cover 14 can be fixed at a desired rotation position. Therefore, when operating the operator of the panel 12, it is not necessary to hold the cover 14 by hand, and parameters can be easily set.
[0031]
In FIG. 4, reference numeral 28 denotes a positive output terminal, reference numeral 30 denotes a negative output terminal, and reference numeral 32 denotes an inert gas output terminal. Reference numeral 34 denotes a window for introducing air into the case 2. Reference numeral 36 denotes a connection terminal of the torch switch.
[0032]
As shown in FIG. 8, a cable, for example, a power cable 38 is introduced into the rear part 6. This is for supplying commercial AC power to the power supply circuit in the case 2. The power cable 38 is clamped by a clamper 40 to prevent the power cable 38 from coming off the case 2. As shown in FIG. 9, the clamper 40 includes a first clamp 40a and a second clamp 40b. These are both made of synthetic resin, and the first clamp portion 40a is formed integrally with the back surface portion 6. The first clamp portion 40a has a concave portion 44 surrounding the outer periphery of about 3/4 of the circular inlet 42 of the power cable 38 formed on the back surface portion 6. The second clamp portion 40b is formed separately from the back surface portion 6 and has a concave portion 46 that can surround the remaining outer periphery of the circular introduction port 42.
[0033]
The power cable 38 is brought into contact with the concave portion 44 of the first clamp portion 40a, and the power cable 38 is pressed into the concave portion 46 of the second clamp portion 40b so as to press the power cable 38 toward the first clamp portion 40a. And fixing means, for example, bolts 48, 48 are inserted from the second clamp portion 40b side and screwed into the first clamp portion 40a, and the second clamp portion 40b is Then, the power cable 38 is clamped.
[0034]
In the clamper 40, the first clamp portion 40a is formed integrally with the back surface portion 6. Conventionally, in the clamper used, the one equivalent to the first clamp portions 40a and 40b is formed separately from the case, so that the one equivalent to the first clamp portion 40a must be attached to the case. Workability was low. However, in this clamper 40, since the first clamp part 40a is formed integrally with the back part 6, the work of attaching the first clamp part 40a to the back part 6 is unnecessary, and the clamping work is made more efficient. Can be. Moreover, since the first and second clamp portions 40a and 40b are made of synthetic resin, they do not rust.
[0035]
Reference numeral 50 in FIG. 8 denotes an inert gas input terminal. Similarly, reference numeral 51 denotes a window for exhausting the air flowing in the case 2.
[0036]
As shown by a dotted line in FIG. 1, an internal cover 52 is arranged in the intermediate portion 8 so as to cover the power supply circuit. The inner cover 52 is coated on both sides of a conductive material, for example, a metal foil, specifically, an aluminum foil or a copper foil, with a material having rust resistance and heat resistance, for example, a resin such as heat-resistant vinyl chloride or heat-resistant polyester. Things. A carbon resin having conductivity can be used instead of the metal foil. The metal foil coated on both sides with the above-mentioned material is relatively flexible, and can be formed into a desired shape by cutting an appropriate cut in a single plate and bending it.
[0037]
The inner cover 52 has an upper wall 52U as shown in FIG. 10, and has both side walls 52R and 52L extending downward from the longitudinal edge of the upper wall 52U. As shown in FIG. 1, the upper wall 52U is located at a position close to the upper wall of the intermediate portion 8 and has a size substantially matching the upper wall of the intermediate portion 8. Both ends of the upper wall 52U are located in the intermediate portion 8, which is near the contact surface between the intermediate portion 8 and the front portion 4 and the contact surface between the intermediate portion 8 and the back portion 6. The side walls 52R and 52L are in contact with the bottom wall of the intermediate portion 8. The inner cover 52 connects a suitable portion thereof to a reference potential point of the power supply circuit. Therefore, the inner cover 52 functions as a shield case.
[0038]
Further, a tongue piece 52a is formed from the end of the upper wall 52U on the front part 4 side toward the inside of the front part 4. The tongue piece 52a has a first inclined portion 52a-1 inclined obliquely upward from an end of the upper wall 52U on the front surface 4 side, and subsequently the first inclined portion 52a-1. Also has a second inclined portion 52a-2 having a gentle inclination. Similarly, a second tongue piece 52b is formed from an end of the upper wall 52U on the back surface 6 side. The tongue piece 52b also has first and second inclined portions 52b-1 and 52b-2 similar to the first and second inclined portions 52a-1 and 52a-2.
[0039]
Further, tongue pieces 52c, 52c are formed so as to enter the front part 4 from the ends of the side walls 52R, 52L on the front part 4 side. Similarly, tongue pieces 52d, 52d are formed to penetrate into the back part 6 from the ends of the side walls 52R, 52L on the back part 6 side. These tongue pieces 52 c, 52 c, 52 d, 52 d also extend to near the bottom walls of the front part 4 and the back part 6.
[0040]
Since the inner cover 52 contains a conductive material inside, the inner cover 52 functions as a shield case, and a high-frequency signal or the like from a noise source near the power supply unit is covered by the power supply covered by the inner cover 52. This prevents the power supply circuit from arriving at the circuit and causing the power supply circuit to malfunction. Further, the upper wall 52U receives water that has entered from the mating surface 54 above the right middle portion 8a and the left middle portion 8b of the middle portion 8 shown in FIG. Therefore, it is possible to prevent the power supply circuit in the inner cover 52 from getting wet with water that has entered from the mating surface 54. Water that has entered from the mating surface 56 between the front portion 4 and the intermediate portion 8 or from the mating surface 58 between the rear portion 6 and the intermediate portion 8 travels along the tongue pieces 52a and 52b and flows toward the upper wall 52U. Therefore, it is possible to prevent the power circuit in the inner cover 52 from getting wet with water that has entered through the mating surfaces 56 or 58.
[0041]
For example, Japanese Patent No. 3235777 discloses a cover having an upper wall 52U and side walls 52R and 52L. In this case, since there is no portion corresponding to the tongue pieces 52a, 52b, it is impossible to cope with water that has entered from the mating surfaces 56, 58.
[0042]
As shown in FIG. 11B, a plurality of, for example, two convex portions 60 protruding toward the front portion 4 are formed on the upper surface of the contact portion of the intermediate portion 8 with the front portion 4. These convex portions 60 are provided at the right end portions of the right middle portion 8a and the left middle portion 8b, as shown in FIG. In a state where the intermediate portion 8 and the front portion 4 are in contact with each other without any deviation in the vertical direction, the upper portion of the surface of the front portion 4 on the intermediate portion 8 side so that the convex portions 60 and 60 enter and come into contact with each other. As shown in FIG. 12, concave portions 62, 62 are formed at both outer ends in correspondence with the convex portions 60, 60. Similarly, convex portions 64, 64 protruding toward the rear portion 6 are formed at upper outer ends of a contact surface of the intermediate portion 8 with the rear portion 6. Further, although not shown in the drawing, in a state where the intermediate portion 8 and the back portion 6 are brought into contact with each other without any deviation in the vertical direction, the rear portion 6 Are formed on the surface on the intermediate portion 8 side.
[0043]
As described above, the protrusions 60, 60 are brought into contact with the recesses 62, 62 on the front part 4 side, and the protrusions 64, 64 are brought into contact with the two recesses on the back part 6 side. Even when the case 2 is gripped and the case 2 is lifted, the front portion 4 and the intermediate portion 8 do not shift in the vertical direction, and similarly, the intermediate portion 8 and the rear portion 6 do not shift in the vertical direction.
[0044]
If such a convex portion or a concave portion is not provided, when the handle 9 is grasped by a person and the case 2 is lifted, a relatively heavy object such as a power supply circuit is present in the intermediate portion 8. On the other hand, since there is no heavy object in the front part 4 and the rear part 6, a vertical displacement occurs between the front part 4 and the intermediate part 8 and between the rear part 6 and the intermediate part 8, respectively. . However, by providing the convex portions 60, 60, the concave portions 62, 62, etc., such a shift can be prevented.
[0045]
In the above embodiment, the cover 14 is provided with the shaft 20 and the projection 22, and the recess 10 is provided with the shaft hole 24 and the circular hole 26. However, the cover 14 is provided with the shaft hole 24 and the circular hole 26. The shaft 20 and the projection 22 can be provided on the side of the recess 10. Further, a plurality of convex portions 22 are provided, but at least one convex portion 22 may be provided at least. Further, in the above-described embodiment, the first clamp portion 40a and the second clamp portion 40b are fixed by bolts. However, the present invention is not limited to this. For example, a fixture having hooks at both ends may be formed. Holes for engaging these hooks may be provided in the first and second clamp portions 40a and 40b. In the above embodiment, the inner cover 52 is provided with the tongue pieces 52c and 52d, but may not be necessary in some cases. Further, in the above embodiment, the convex portions 60 and 64 are provided on the intermediate portion 8 side, and the concave portions are provided on the front portion 4 and the rear portion 6 side. Conversely, the concave portions are provided on the intermediate portion 8 side, Protrusions may be provided on the front part 4 and the back part 6 side. Further, in the above-described embodiment, the intermediate portion 8 is constituted by the right and left intermediate portions 8a and 8b. However, the intermediate portion may be constituted by a rectangular parallelepiped having a hollow interior and open front and rear surfaces.
[0046]
【The invention's effect】
As described above, according to the present invention, since the cover can be fixed at a desired angle with respect to the panel, the operator on the panel can be operated without holding the cover by hand. be able to. Therefore, the setting operation of the operator can be efficiently performed. Further, if the first clamp portion is provided integrally with the case, the cable can be easily clamped. Also, if the inner cover in the middle is provided with a tongue piece that extends beyond the mating surface of the front and back, if the tongue extends from the mating surface of the front and middle, or the mating surface of the middle and back, If water enters, the power circuit will not get wet. Also, if a convex portion is provided on one of the contact surfaces between the front portion and the intermediate portion, a concave portion is provided on the other, a convex portion is provided on one of the contact surfaces between the rear portion and the intermediate portion, and a concave portion is provided on the other. When the case is lifted, no displacement occurs between the front portion and the intermediate portion, and no displacement occurs between the intermediate portion and the rear portion.
[Brief description of the drawings]
FIG. 1 is a side view of a power supply device according to an embodiment of the present invention.
FIG. 2 is a plan view of the power supply device of FIG.
FIG. 3 is a vertical sectional front view of an intermediate portion of a case of the power supply device of FIG. 1;
FIG. 4 is a front view of the power supply device of FIG.
5 is a partially omitted vertical side view of a front portion of a case of the power supply device of FIG. 1;
FIG. 6 is a partially omitted plan view of a cover of a case of the power supply device of FIG. 1;
FIG. 7 is a partially cutaway side view of the cover of FIG. 7;
FIG. 8 is a rear view of the power supply device of FIG. 1;
FIG. 9 is a partially cutaway enlarged view of a rear portion of the power supply device of FIG. 1;
FIG. 10 is a partially omitted perspective view of an internal cover used in the power supply device of FIG. 1;
FIG. 11 is a plan view and a side view of an intermediate portion of the case of the power supply device of FIG. 1;
12 is a partially omitted rear view of a front part of a case of the power supply device of FIG. 1;
[Explanation of symbols]
2 cases
4 Front
6 Back
8 Middle part
20 axes
22 convex
26 circular hole

Claims (4)

Case and
A panel arranged on a part of the case and having a plurality of operators for setting characteristics of the power supply circuit;
A cover attached to the case such that at least a part of both sides substantially contact the case in a state where the panel is covered, and which is rotatable around an axis substantially perpendicular to the both sides at the contact portion.
In the power supply device provided,
At least one convex portion located on a circumference around the axis on one of the side surface of the case and the cover;
On one of the side surface of the case and the cover, a plurality of recesses that are located on the circumference and into which the protrusions can enter,
The convex portion includes one concave portion when the cover covers the panel, and the concave portion into which the convex portion enters is sequentially changed as the cover moves in a direction in which the panel is opened. As described above, a power supply device provided with each of the concave portions. The power supply device according to claim 1, wherein a cable introduced from outside of the case to an inside thereof through an introduction port provided in the case,
A first clamp portion formed integrally with the case near the introduction port and surrounding substantially half of the cable in a circumferential direction;
A second clamp portion surrounding the other half of the cable and attached to the first clamp portion so as to surround the entire circumference of the cable together with the first clamp portion;
Power supply device. The power supply device according to claim 1, wherein the case includes a front part and a rear part arranged to face each other at an interval;
An intermediate portion that is located between the front portion and the back portion and is in contact with the front portion and the back portion so as to connect the front portion and the back portion.
Comprising, a sheet disposed in the intermediate portion so as to cover components for a power supply circuit in the intermediate portion,
A first tongue extending from the upper portion of the sheet beyond the contact surface between the front portion and the intermediate portion and into the front portion, and contact between the intermediate portion and the rear portion from the upper portion of the sheet. A second tongue extending beyond the surface into the rear portion. The power supply device according to claim 1, wherein the case includes a front part and a rear part arranged to face each other at an interval;
An intermediate portion that is located between the front portion and the back portion and is in contact with the front portion and the back portion so as to connect the front portion and the back portion.
Equipped,
A first protruding portion protruding toward one of the contact surfaces of the front portion and the intermediate portion toward the other of the contact surfaces of the front portion and the intermediate portion,
A first recess provided on the other of the contact surface between the front portion and the intermediate portion, and into which the first protrusion enters;
A second protruding portion that protrudes toward one of the contact surfaces between the rear portion and the intermediate portion toward the other of the contact surfaces between the rear portion and the intermediate portion;
A second recess provided on the other of the contact surfaces of the rear portion and the intermediate portion, and into which the second protrusion enters.
Power supply device.

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