JP4343394B2 - PCB holder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printed circuit board holder that holds a printed circuit board having copper foil surfaces on both sides and is immersed in a plating tank.
[0002]
[Prior art]
In a printed circuit board such as an electronic circuit, there is a plating process in which through holes for connecting component terminals are formed on a printed circuit board having copper foil surfaces on both sides, and copper is adhered to the side surfaces of the through holes. In order to hold the printed circuit board in this step and immerse it in the plating tank, a printed circuit board holder is used.
[0003]
FIG. 3 is a view showing a conventional printed board holder. The printed circuit board holder 300 has the printed circuit board 290 sandwiched between the vertical plate 310a and the vertical plate 310b, and the expansion and contraction adjustment screw 313 attached to the horizontal plate 311a and the horizontal plate 311b and the horizontal plate 312a and the horizontal plate 312b. In addition, the expansion adjustment thumbscrew 314 is tightened to hold the printed circuit board 290.
[0004]
The printed circuit board holder 300 includes vertical plates 310a and 310b, horizontal plates 311a, 311b, 312a and 312b, and expansion and contraction adjusting thumb screws 313 and 314. The horizontal plate 311a and the horizontal plate 311a are arranged above the vertical plates 310a and 310b, respectively. On the lower side of the plate 311b, the horizontal plate 312a and the horizontal plate 312b are fixed by bolts and nuts, respectively. The printed circuit board holder 300 is fixed to the suspension bar 180 by fixing thumb screws 340. The horizontal plate 311a and the horizontal plate 312a are respectively provided with a long long hole 315 and a long long hole 316. The long long hole 315 and the long long hole 316 are respectively provided with expansion and contraction adjustment screws. 313 and an expansion / contraction adjustment thumb screw 314 are attached. The space between the vertical plate 311a and the vertical plate 311b is changed by loosening the expansion / contraction adjustment screw 313 and the expansion / contraction adjustment screw 314 and shifting the horizontal plate 311a and the horizontal plate 311b and the horizontal plate 312a and the horizontal plate 312b.
[0005]
Next, a procedure for holding the printed circuit board 290 on the printed circuit board holder 300 will be described. The printed board holder 300 is removed from the suspension bar 180. The expansion adjustment thumbscrew 313 and the extension adjustment thumbscrew 314 are loosened, and the horizontal plate 311a, the horizontal plate 311b, the horizontal plate 312a, and the horizontal plate. 312b is shifted, the interval between the vertical board 310a and the vertical board 310b is made wider than the width of the printed board 290, and the left end surface of the printed board 290 is sandwiched and held by the printed board holding device 320 provided on the vertical board 310a. . In this printed circuit board holder 300, the holding apparatus 320, 321 of the printed circuit board uses the holding system shown in FIG. The horizontal plate 311a and the horizontal plate 311b and the horizontal plate 312a and the horizontal plate 312b are shifted to bring the vertical plate 310b closer to the vertical plate 310a, and the right end of the printed circuit board is held by the printed circuit board holding device 321 provided on the vertical plate 310b. After the surfaces are sandwiched and held, the expansion adjustment thumbscrew 313 and the extension adjustment thumbscrew 314 are tightened to fix the vertical plate 310a and the vertical plate 310b. Finally, after attaching the printed board holder 300 to the suspension bar 180, the fixing thumbscrew 340 is tightened to fix the printed board holder 300 to the suspension bar 180. After being immersed in a plating tank (not shown) in this state, the printed circuit board 290 is plated by energizing the suspension bar 180 and an electrode (not shown) provided in the plating tank.
[0006]
After the plating is completed, the fixing thumbscrew 340 is loosened to remove the printed board holder 300 from the suspension bar 180, the expansion and contraction adjusting thumbscrews 313 and 314 are loosened, and the vertical plate. The distance between 310a and vertical plate 310b is made wider than the width of printed circuit board 290, and the left and right end surfaces of printed circuit board 290 are removed from printed circuit board holding devices 320 and 321.
[0007]
The printed board holding devices 320 and 321 provided in the printed board holding tool 300 and other printed board holding devices are shown below.
[0008]
FIG. 4 is a cross-sectional view of a conventional printed circuit board holding device (clamping method). A printed circuit board holding device 400 shown in FIG. 4 has a pair of sandwiching portions 410a and 410b formed at the front ends of a pair of metal frames, and the end surface of the printed circuit board 290 is placed between the sandwiching portion 410a and the sandwiching portion 410b. It is a device that inserts and holds the printed circuit board 290 in between.
[0009]
FIG. 5 is a cross-sectional view of a conventional printed board holding device (clip method (1)). A printed circuit board holding device 500 shown in FIG. 5 is an apparatus that sandwiches and holds a printed circuit board 290 between a metal plate 510 and a pressing portion 520 of an arc-shaped metal plate having one end attached to the metal plate 510. is there.
[0010]
FIG. 6 is a cross-sectional view of a conventional printed board holding device (clip system (2)) used in the printed board holder 300 shown in FIG. A printed circuit board holding device 600 shown in FIG. 6 is an apparatus for holding the printed circuit board 290 by holding the end surface of the printed circuit board 290 with a metal clip 610.
[0011]
[Problems to be solved by the invention]
In the conventional printed circuit board holder, when attaching or removing the printed circuit board, first, the fixing thumbscrew for fixing to the suspension bar is loosened to remove the printed circuit board holder from the suspension bar, Loosen the two expansion adjustment thumbscrews provided on the horizontal plate of the printed board holder and slide the two vertical boards with the printed board holding device to set the distance between the two vertical boards. Since the work of extending the width is performed, it takes time to attach and remove the printed circuit board, which causes a serious problem when processing a plurality of printed circuit boards or automating the plating process.
[0012]
The present invention has been made to solve the above-mentioned problems, and improves the workability of the conventional method so that the printed board can be attached and removed more easily and in a shorter time than the conventional printed board holder. It is an object of the present invention to provide a low-cost printed circuit board holder that is improved and can reliably hold the printed circuit board and facilitates automation of operations.
[0013]
[Means for Solving the Problems]
The present invention provides a printed circuit board holder in which a printed circuit board having copper foil surfaces on both sides is held and suspended on a suspension bar, and the printed circuit board is immersed in a plating tank. A fixed frame having a hook suspended from a suspension bar; and a movable frame that engages with the fixed frame and forms a region in which the printed circuit board is disposed between the fixed frame and the movable frame, Each of the horizontal plate members has a vertical plate member and two horizontal plate members, and each of the horizontal plate members is rotatably attached to a different location of the vertical plate member, and the horizontal plate is installed at a different location of the fixed frame. Each of the shaped members is rotatably attached, and is provided with a device for holding the printed circuit board on the opposing end surfaces of the fixed frame and the vertical plate-like member. The movable frame may be provided with an elastic member for forcibly displacing the movable frame in the direction of holding the printed circuit board, and the elastic member may be a wiring member.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a first embodiment of a printed board holder according to the present invention. FIG. 2 is a view showing a second embodiment of a printed board holder according to the present invention.
[0015]
A printed circuit board holder 100 shown in FIG. 1 includes a printed circuit board (not shown) between a fixed frame vertical plate 111 and a movable frame 150 that can move in the vertical direction to change the distance between the fixed frame vertical plate 111. ) Is sandwiched and held. The printed circuit board holder 100 includes a fixed frame 110, a movable frame 150, and an auxiliary fixed frame 170. A hook (not shown) is hung on a suspension bar 180 on the upper end of the fixed frame 110 and the upper end of the auxiliary fixed frame 170. And is suspended from a suspension bar 180 by the hook (not shown) and fixed by a bolt 181. The fixed frame 110 is formed of a fixed frame vertical plate 111 and fixed frame horizontal plates 112 and 113 formed in the middle and the other end of the fixed frame vertical plate 111. The movable frame 150 includes a vertical plate member 151 and two horizontal plate members 152 and 153. Note that the printed circuit board holder may not have the hook, and may be fixed to the suspension bar 180 only by a bolt.
[0016]
Near the both ends of the vertical plate-shaped member 151, a substantially central portion of the horizontal plate-shaped member 152 is rotatably attached by a pin 114, and one end of the horizontal plate-shaped member 153 is rotatably attached by a pin 115. One end of the plate-like member 152 is rotatably attached by a pin 116 near the end of the fixed frame horizontal plate 112 and the other end of the horizontal plate-like member 153 is rotatably attached by a pin 117 near the end of the fixed frame horizontal plate 113. ing. As described above, an area where a printed circuit board (not shown) can be disposed is formed on the inner side surrounded by the fixed frame 110 and the movable frame 150. Further, the other end portion of the horizontal plate-like member 152 is movably attached by a pin 172 to an elongated hole 171 which is provided in the vicinity of the other end portion of the auxiliary fixing frame 170 and is substantially vertically long. The elongated hole 171 and the pin 172 serve as a stopper for the movable frame 150.
[0017]
Further, an end face of the fixed frame vertical plate 111 and an end face of the vertical plate member 151 facing each other between the two horizontal plate members 152 and 153 are for holding a printed circuit board (not shown). Printed circuit board holding devices 161 and 162 are provided.
[0018]
Next, a procedure for attaching a printed circuit board (not shown) to the printed circuit board holder 100 will be described. In a state in which the printed circuit board is not held by the printed circuit board holder 100, the movable frame 150 coupled to the fixed frame 110 by the pins 116 and 117 has a substantially vertically long length where the pin 172 is provided on the auxiliary fixed frame 170. The position of the printed board holding device 161 and the printed board holding device 162 is narrower than the width of the printed board (not shown).
[0019]
When the printed circuit board is attached, the vertical plate member 151 is pushed upward until the pin 172 reaches the vicinity of the uppermost portion of the elongated hole 171 that is substantially vertically long. That is, the horizontal plate member 152 and the horizontal plate member 153 are moved to positions indicated by two-dot chain lines, respectively. Then, since the interval between the printed board holding device 161 and the printed board holding device 162 is wider than the width of the printed board (not shown), the left end surface of the printed board (not shown) is used as the fixed frame vertical plate 111. The printed board holding device 161 is provided and held. Then, the vertical plate member 151 is lowered, and the left end surface of the printed board (not shown) is sandwiched and held by the printed board holding device 162 provided in the vertical plate member 151.
[0020]
While holding the printed circuit board as described above, the printed circuit board holder 100 is moved together with the suspension bar 180 to the plating tank (not shown), and the printed circuit board (not shown) is moved to the plating tank (not shown). Then, the printed circuit board (not shown) is plated by energizing an electrode (not shown) provided on the printed board holder 100 and a plating tank electrode (not shown).
[0021]
Next, a procedure for removing a printed circuit board (not shown) from the printed circuit board holder 100 after plating is described. The vertical plate member 151 of the printed board holder 100 fixed to the suspension bar 180 is pushed upward, and the printed board (not shown) is printed from the printed board holding device 162 provided in the vertical plate member 151. Remove the right edge of. Then, the left end surface of the printed circuit board (not shown) is removed from the printed circuit board holding device 161 provided in the fixed frame vertical plate 111.
[0022]
As described above, the printed circuit board (not shown) can be attached or removed by slightly pressing or pushing up the movable frame 150 that is a part of the printed circuit board holder 100, so that the conventional structure can be removed. A printed circuit board can be attached or removed easily and in a short time. The printed circuit board holding devices 161 and 162 shown in the present embodiment are of the clip type (2) shown in FIG. 6, but those shown in FIGS. 4 and 5 can also be used. A printed circuit board holding device can also be used.
[0023]
Next, a second embodiment of the present invention will be described with reference to FIG. 2 is a direction in which the vertical board member 251 of the movable frame 250 that holds the printed board 290 is forcibly held by the printed board holder 100 shown in FIG. A spring 280 which is an elastic member to be displaced is provided.
[0024]
One end of the spring 280 is fixed to the side surface of the auxiliary fixing frame 270 with a bolt 281, and the other end of the spring 280 is fixed to one end of the vertical plate member 251 with a bolt 282. Therefore, as shown in FIG. 2, the spring 280 always pushes down the vertical plate member 251 so as to hold the printed board, so that the printed board 290 is not easily detached from the printed board holder 200. The spring 280 may be a wiring material such as a spring-shaped wiring cable, or may be another elastic member.
[0025]
Next, a procedure for removing the printed circuit board from the printed circuit board holder 200 shown in FIG. 2 will be described. FIG. 2 shows a printed board holder 200 to which the printed board 290 is attached. In order to remove the printed board 290 from this state, the vertical board member 251 is pushed upward while holding the printed board 290 so that the vertical board member 251 does not fall until the vertical plate member 251 reaches the board placement position 256. The right end surface of 290 is removed from the printed circuit board holding device 262. Then, the left end surface of the printed board 290 is removed from the printed board holding device 261 provided on the fixed frame vertical plate 211.
[0026]
When the printed board is attached to the printed board holder 200 that does not hold the printed board, the vertical plate-like member 251 is located at the movable frame original position 257, which is the stopper position of the movable frame 250. The vertical plate member 251 is pushed up to move to the substrate arrangement position 256 and is held as it is. In this state, the distance between the printed circuit board holding device 261 and the printed circuit board holding device 262 is wider than the width of the printed circuit board 290, so that the left edge surface of the printed circuit board 290 is sandwiched and held by the printed circuit board holding device 261. . When the movable frame 250 is opened, the vertical plate member 251 is forcibly pushed down by the spring 280 in the direction of holding the printed circuit board 290, and the printed circuit board holding device 262 provided in the vertical plate member 251 prints. It contacts the right end surface of the substrate 290. Further, the vertical plate member 251 is pushed down and the right end surface of the printed circuit board 290 is sandwiched and held by the printed circuit board holding device 262. As described above, since the spring 280 forcibly pushes the movable frame 250 in the direction of holding the printed circuit board 290, the printed circuit board is securely held and is not easily detached.
[0027]
The holding force of the printed circuit board can be adjusted by adjusting the weight of the movable frame and the elastic force of the elastic member. In addition, plastic or metal can be used as a material for the fixed frame, the movable frame, and the auxiliary fixed frame, which are constituent members other than the electrodes in the holder of the printed circuit board. As a result, energization to the printed circuit board is stabilized, and furthermore, a plated film with little variation can be easily obtained by securely holding the printed circuit board with an elastic member.
[0028]
In the printed circuit board holder shown in the present embodiment, the left and right end surfaces of the printed circuit board are held, but the upper and lower end surfaces of the printed circuit board are held by changing the arrangement of the fixed frame and the movable frame, or You may make it hold | maintain the corner | angular part of a printed circuit board using a clip etc. as a holding apparatus of a printed circuit board.
[0029]
As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, A various deformation | transformation is possible.
[0030]
【The invention's effect】
According to the present invention, the operation of attaching and removing the printed circuit board can be performed easily and in a short time, and the printed circuit board can be reliably held by the elastic member.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of a printed circuit board holder according to the present invention.
FIG. 2 is a diagram showing a second embodiment of a printed board holder according to the present invention.
FIG. 3 is a view showing a conventional printed board holder.
FIG. 4 is a cross-sectional view of a conventional printed circuit board holding device (clamping method).
FIG. 5 is a cross-sectional view of a conventional printed board holding device (clip method (1)).
FIG. 6 is a cross-sectional view of a conventional printed board holding device (clip method (2)).
[Explanation of symbols]
100, 200, 300 Printed circuit board holder 110, 210 Fixed frame 111, 211 Fixed frame vertical plate 112, 113, 212, 213 Fixed frame horizontal plate 114, 115, 116, 117, 172, 216, 217, 254, 255 272 Pin 150, 250 Movable frame 151, 251 Vertical plate member 152, 153, 252, 253 Horizontal plate member 161, 162, 261, 262, 320, 321 Printed circuit board holding device 170, 270 Auxiliary fixed frame 171, 271 Long longitudinal hole 180 Suspension bar 181 Bolt 256 Board placement position 257 Movable frame original position 280 Spring 281, 282 Bolt 290 Printed circuit board 310a, 310b Vertical board 311a, 311b, 312a, 312b Horizontal board 313, 314 Expansion / contraction Adjustable thumbscrews 315, 316 Long elongated holes 340 Fixing thumbscrew 400 Printed circuit board holding device (clamping method)
410a, 410b Holding part 500 Printed circuit board holding device (clip method (1))
510 Metal Plate 520 Metal Plate Pressing Unit 600 Printed Circuit Board Holding Device (Clip Method (2))
610 metal clip

Claims (3)

In the state of holding a printed board having a copper foil surface on both sides, hang it on a suspension bar, and in a printed board holder that immerses the printed board in a plating tank,
The printed circuit board holder includes a fixed frame having a hook suspended from the suspension bar, and a movable frame that engages with the fixed frame and forms an area in which the printed circuit board is disposed between the fixed frame and the fixed frame. And
The movable frame has a vertical plate member and two horizontal plate members,
Each of the horizontal plate-like members is rotatably attached to different places of the vertical plate-like member,
Each of the horizontal plate-like members is rotatably attached to different places of the fixed frame,
A printed circuit board holder, comprising a device for holding the printed circuit board on opposite end faces of the fixed frame and the vertical plate member. The printed circuit board holder according to claim 1, further comprising an elastic member for forcibly displacing the movable frame in a direction of holding the printed circuit board. The printed circuit board holder according to claim 2, wherein the elastic member is a wiring member.

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