JP3092873U - Short-circuit structure of the wiring part on the substrate of the pickup and short-circuit structure of the wiring part on the substrate - Google Patents

Abstract

(57) [Problem] To easily and promptly short-circuit a printed wiring pattern without using solder for soldering. SOLUTION: An iron plate 2 having a hole 2a through which terminals 1a, 1b, 1c of a laser diode 1 attached to an optical pickup are provided, and a short land 3 attached to an upper surface of the iron plate 2
A, 3B, 3C, a flexible printed circuit board 8 provided with printed wirings 5, 6, 7 provided from the short lands to the flexible flat cable 4, and terminals 1a, 1b, 1c of the laser diode 1 and the printed wirings are connected by soldering. Conductive members 9A, 9 which are pressed by short lands of flexible printed circuit board 8 and short circuit printed wiring.
B, 9C, a short-circuit comprising a cylindrical portion 11A, 11B, 11C of a magnet in which a conductive member is inserted via an internal spring 10 and a resin cover 13 in which a short-circuit electrode wire 12 connected to the spring is embedded. And a member 14.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention is directed to a short-circuit structure of the wiring part on the substrate of the pickup and a short circuit of the wiring part on the substrate. Concerning the tangle structure.

[0002]

[Prior art]

  As a conventional short-circuit structure of this kind of wiring part, for example, an optical disc pickup substrate There is a short circuit structure of the board. This is a board The tips of the multiple rows of patterns formed on the body are short-circuited by soldering during assembly. Had removed this soldering solder. In this way, soldering during assembly There was a problem that it took a lot of work to remove the solder, which was troublesome. .

[0003]   The first conventional technique is shown in FIG. 115 is a microphone circuit board, The microphone circuit board 115 for processing the signal from the connector 116 C117 is provided, and the signal from the connector 116 is amplified and taken out. I'm told. In addition, the microphone circuit board 115 includes the circuit board Fixing means (screw 118) for fixing 115 to the microphone cabinet 111 Insertion holes 119 and 120 are formed to be inserted. And a microphone cap Short circuit land 1 of circuit pattern as means for adjusting sensitivity of cell (not shown) 42 is provided in association with one of the insertion holes 120, and the insertion of the screw 118 causes The short land 142 is electrically connected (short-circuited) to adjust the sensitivity. (For example, refer to Patent Document 1).   However, in this case, the fixing means including the screw 118 is used.

[0004]   The second conventional technique is shown in FIG. On the component insertion surface of the printed board 201, the first and the first The second test point 203 is formed, and the first and second test points are formed. The ports 203 are configured to be adjacent to each other at a predetermined distance. This first and second And the second test point 203 have first and second jumper wires 204 respectively. Are arranged so as to extend parallel to each other. Tip of flathead screwdriver 205 And the like by short-circuiting between the first and second jumper wires 204 adjacent to each other. The printed circuit board 201 can be adjusted and inspected (for example, See Patent Document 2).   However, in this case, do not hold the minus driver 205 by hand. Don't be afraid, I picked up one hand when installing the pickup, There was a problem that this work was difficult to do.

[0005]

[Patent Document 1]   JP 7-236079 A

[Patent Document 2]   JP, 11-298107, A

[0006]

[Problems to be solved by the device]

  The present invention makes it possible to easily and quickly perform pattern short-circuiting without using the above solder. The task is to

[0007]

[Means for Solving the Problems]

  The present invention has been proposed to solve the above problems, and is described in claim 1. The idea of the mounting is that the laser diode of the optical pickup is attached to the bottom An iron plate with holes for passing multiple terminals from the diode to the top side , Affixed to the upper surface of this iron plate, and a plurality of short lands and this From the land to the flexible flat cable mounting position A flexible printed circuit board provided with printed wiring, A plurality of terminals of the ion and each of the plurality of printed wirings are connected by solder, A pick that protects the laser diode by shorting the short land. In the short-circuit structure of the wiring portion on the board of the up A conductive portion pressed by the short land to short-circuit the printed wiring. Material and a plurality of magnets in which the conductive member is inserted through an internal spring. The tubular portion and the plurality of tubular portions are attached to the lower surface side, and each of the splines inside the plurality of tubular portions is attached. A resin cover that is connected to the ring and has all the short-circuit electrode wiring embedded inside. A short-circuiting member comprising a bar and the plurality of conductive members of the short-circuiting member. The tubular body is pressed by pressing on each short land on the flexible printed circuit board. Due to its magnetism, it is attracted to the short land and removably fixed to the conductive member. The urging force of each spring constantly presses against the short land to cause each show. The feature is that it is configured to short-circuit the land.

[0008]   According to a second aspect of the present invention, in the short-circuit structure of the wiring portion on the board, the upper surface of the iron plate is Affixed to the surface of multiple short lands and The printed wiring is wired up to the mounting position of the flexible flat cable. Flexible printed circuit board and the short circuit of the flexible printed circuit board It has conductivity and magnetism to press the land to short-circuit the printed wiring. A plurality of boss-like bodies and a plurality of these boss-like bodies are attached to the lower surface side. Is connected to the boss-like body of the And a plurality of boss-shaped members of the short-circuiting member, the short-circuiting member including a fat cover. Is pressed against each short land on the flexible printed circuit board, The short land is attached to the short land so that it can be detachably fixed and the conductivity of the short The feature is that the land is short-circuited.

[0009]   According to a third aspect of the invention, a positioning recess is formed in each of the short lands. At the tip of the magnetic boss, a recess for positioning each of the short lands is provided. Provided with a protrusion for fitting into the portion to position the short-circuit member Is characterized by.   According to a fourth aspect of the present invention, the main body of the boss has a cylindrical shape made of synthetic resin. Part, and the end is exposed to the outside from the tubular part by being hung from this tubular part via wiring. It is characterized in that a bar-shaped body having magnetism is arranged.   According to a fifth aspect of the present invention, the main body of the boss has a cylindrical shape made of synthetic resin. It is suspended from the inside of this tubular part via a spring and the tip is outside the tubular part. It is characterized in that a bar-shaped body having magnetism exposed to the inside is arranged.

[0010]

[Embodiment of device]

  Hereinafter, the short circuit structure of the wiring portion on the substrate of the pickup according to the present invention and the arrangement on the substrate will be described. An embodiment of a short-circuit structure of a wire portion will be described with reference to the drawings.   FIG. 1 shows a short-circuit structure of a wiring portion on a substrate of a pickup of this embodiment, (a) Is a perspective view showing the state of the short land before the short circuit, (b) is the laser die Fig. 2 is a perspective view of the iron plate to which the ode is attached, and Fig. 2 shows the short-circuit member in the same structure. , (A) is its plan view, (b) is its front view, (c) is its side view, and FIG. It is an expanded sectional view of the member for short circuits in manufacture.

[0011]   The short circuit structure of the wiring portion on the substrate of the pickup of the first embodiment is The laser diode 1 from the laser Circular holes 2a for passing a number of terminals 1a, 1b, 1c on the upper surface side [see FIG. 1 (b)] And an iron plate 2 having one end bent upward, and this iron Affixed over the entire upper surface of the plate 2, and on the surface near the bent end Three short lands 3A, 3B, 3C provided and these short lands 3A, 3B, 3C to a flexible flat casing disposed near the other end The three printed wirings 5, 6, and 7 wired up to the mounting position of the cable 4 are provided. The flexible printed circuit board 8 is provided.

[0012]   Here, the three printed wiring lines 5, 6, and 7 are connected to each short wiring line as shown in FIG. Each of the terminals 1 of the laser diode 1 is located at a substantially central portion extending from the hands 3A, 3B, 3C. The wires are bent and wired so as to gather toward the positions a, 1b, and 1c. Almost parallel from the center position to the mounting position of the flexible flat cable 4. It is wired.   Then, the three terminals 1a, 1b, 1c on the upper surface of the laser diode 1 [FIG. )]] And each of the three central portions of the printed wirings 5, 6, 7 described above are made of solder. It is connected.   Then, as described later, short-circuiting the short lands 3A, 3B, 3C. Thus, the laser diode 1 is protected.

[0013]   In addition, as shown in FIG. For short-circuiting the printed wirings 5, 6, 7 by being pressed by the wires 3A, 3B, 3C. Three rod-shaped conductive members 9A, 9B, 9C and these conductive members 9A, 9B, 9 It consists of magnets inserted through springs 10 connected to the upper end of C respectively. Three tubular portions 11A, 11B, 11C and these three tubular portions 11A, 11B, 11 C is attached to the lower surface side and each of the spouts inside the three tubular portions 11A, 11B, and 11C is An electrode wiring 12 for short circuit, which is connected to the ring 10 and is entirely connected to the inside, is buried. The resin cover 13 and the short-circuit member 14 are provided.

[0014]   Then, the three conductive members 9A, 9B, and 9C of the short-circuit member 14 are flexibly attached. Simultaneously press on the three short lands 3A, 3B, 3C on the bull printed circuit board 8. Attach the tubular portions 11A, 11B, 11C to the short lands 3A, 3 due to their magnetism. Adsorbed to B and 3C and detachably fixed, each conductive member 9A, 9B and 9C is attached to each sp The urging force of the ring 10 constantly presses against the short lands 3A, 3B, 3C and The shortlands 3A, 3B and 3C are short-circuited.   Furthermore, each cylindrical portion 11A, 11B, 11C made of magnet is formed in each short land 3A. When it contacts 3B, 3C, its magnetism causes it to be absorbed by the short lands 3A, 3B, 3C. Then, the short-circuit member 14 is fixed.

[0015]   Therefore, according to the present embodiment, the three conductive members 9A and 9B of the short-circuit member 14 are provided. , 9C are short lands 3A, 3B, 3C on the upper surface of the flexible printed circuit board 8. The printed wiring 5 through the short lands 3A, 3B and 3C. Since 6 and 7 are short-circuited, there is no need to use soldering solder as in the past. In addition, it is possible to easily and quickly short-circuit the patterns of the printed wiring 5, 6, and 7. It   In addition, each cylindrical portion 11A, 11B, 11C made of a magnet is connected to each short land 3A. Since it is made to adsorb to 3B and 3C, even if the hand is removed from the short-circuit member 14, it is short. Since the connecting member 14 is in the fixed state, it is possible to use the minus dry as in the past. Use one hand when mounting the pickup without holding the bar by hand. You can install this pickup with both hands without having to remove it, This has the advantage of being easy to perform.

[0016] FIG. 4 shows a short-circuit structure of a wiring portion on the substrate of the pickup of the second embodiment, (a) Is a partial perspective view showing a state of the short land before the short circuit, and FIG. It is a figure.   In the second embodiment, as shown in FIGS. 4A and 4B, each short land 3A is Positioning recesses 3a, 3b, 3c are formed in 3B, 3C, and the short-circuit member 14 is formed. Is provided with three magnetic bosses 15A, 15B, 15C on its lower surface. , At their tips, positioning recesses 3a, 3b for the respective short lands 3A, 3B, 3C. 3c, and projections 15a, 15 for fitting and positioning the short-circuit member 14 b and 15c are provided.   The bosses 15A, 15B and 15C are preferably formed of magnets.

[0017]   Then, while holding the short-circuit member 14 in each hand, each boss-shaped body 15A, 15B, 15C Bring the protrusions 15a, 15b, 15c close to the short lands 3A, 3B, 3C. Fit into the positioning recesses 3a, 3b, 3c of each short land 3A, 3B, 3C The bosses 15A, 15B, 15C by their magnetism. The short lands 3A, 3B and 3C are made to adsorb.   Therefore, in the short-circuit structure of the wiring portion on the substrate of the pickup of the second embodiment According to this, the protrusions 15a, 15 of the bosses 15A, 15B, 15C of the short-circuit member are b and 15c are positioning recesses 3a, 3b for positioning the short lands 3A, 3B, 3C, 3c can be fitted and positioned.   Moreover, the magnetic properties of the bosses 15A, 15B, and 15C make them short-runs. Since it can be fixed by adsorbing to the drivers 3A, 3B, 3C, it can be Without having to hold the handle with your hand when installing the pickup. This pick-up work can be done with both hands without being picked up. Has the advantage of being easy to perform.

[0018]   FIG. 5 shows a short-circuit member in the short-circuit structure of the wiring portion on the substrate of the pickup of another example. The main part is shown, (a) is the partial perspective view seen from the lower surface side of the 1st example, (c) is the part. It is a partial perspective view seen from the lower surface side of two examples.   FIG. 5A shows a boss 15A provided on the lower surface of the short-circuit member 14, The main body portions of 15B and 15C are cylindrical portions 15d, 15e and 15f made of synthetic resin. And is suspended in the tubular portions 15d, 15e, 15f through the wiring 16. Magnetic rod-shaped body 1 whose tip is exposed to the outside from the cylindrical portions 15d, 15e, 15f 7A, 17B and 17C are arranged.

[0019]   Then, hold the short-circuit member 14 in your hand and approach the short lands 3A, 3B, 3C. On the other hand, each rod-shaped body 17A, 1A exposed from the tip of each tubular body 15d, 15e, 15f When 7B and 17C are pressed against the respective short lands 3A, 3B and 3C, the respective rod-shaped bodies 1 Magnetic attraction of 7A, 17B, 17C attracts to each short land 3A, 3B, 3C And then fixed.   Therefore, without having to hold a screwdriver by hand like before, Do not pick up one hand when installing the pickup, and use this There is an advantage that the installation work of the backup can be performed, and this work is easy to perform.

[0020]   FIG. 5B shows that the body portions of the bosses 15A, 15B and 15C are made of synthetic resin. The tubular portions 15d, 15e, and 15f formed by e and 15f are suspended via the spring 10 and the tips are cylindrical portions 15d, 15e, Magnetic rods 17A, 17B and 17C exposed to the outside from 15f are provided. Has been.   Then, hold the short-circuit member 14 in your hand and approach the short lands 3A, 3B, 3C. On the other hand, each rod-shaped body 17A, 1A exposed from the tip of each tubular body 15d, 15e, 15f When 7B and 17C are pressed against the respective short lands 3A, 3B and 3C, the respective rod-shaped bodies 1 Magnetic attraction of 7A, 17B, 17C attracts to each short land 3A, 3B, 3C And then fixed.

[0021]   Therefore, without having to hold a screwdriver by hand like before, Do not pick up one hand when installing the pickup, and use this There is an advantage that the installation work of the backup can be performed, and this work is easy to perform.   Moreover, each rod-shaped body 17A, 17B, 17C is pressed by the urging force of the spring 10. Therefore, the short lands 3A, 3B, and 3C must be securely contacted, and the short circuit must be accurately performed. It can be carried out.

[0022]

[Effect of device]

  As described above, the device according to claim 1 is the laser device for the optical pickup. Iodine is attached to the bottom side, and multiple terminals from this laser diode are attached to the top side. The iron plate provided with a hole for passing through the A plurality of short lands on the surface and a flexible flat case from these short lands. Flexible with multiple printed wirings wired to the cable mounting position Equipped with a printed circuit board, multiple terminals of laser diode and multiple printed wiring Each of them is connected by solder, and by short-circuiting the short land, the laser diode Flexible in the short circuit structure of the wiring part on the board of the pickup that protects the A conductor for pressing the short land of the printed circuit board to short-circuit the printed wiring. The electro-conductive member and the electro-conductive member consist of a magnet inserted through an internal spring. The plurality of tubular portions and the plurality of tubular portions are attached to the lower surface side of the inside of the plurality of tubular portions. Electrode wiring for short circuit, which is connected to each spring and all connected inside, is buried. A resin cover and a short-circuit member, and a plurality of conductive members of the short-circuit member. By pressing against the short lands on the flexible printed circuit board, The conductive material is attached to the short lands and removably fixed to each spring. Always press the short lands with urging force to short-circuit each short land Since it is configured, the following effects are achieved.

[0023]   That is, the plurality of conductive members of the short-circuit member are connected to the upper surface of the flexible printed circuit board. Press on the short land and short the printed wiring through this short land. Since it has been designed so that it does not use solder for soldering as in the past, Shorting of the line pattern can be done easily and quickly.   Also, since each tubular part made of a magnet is attracted to each short land, , Even if you take your hand away from the short-circuit member, the short-circuit member will remain in a fixed state. Mounting the pickup without having to hold a flat-blade screwdriver by hand You don't have to take one hand when you do the work Can be performed, and this work is easy to perform.

[0024]   According to a second aspect of the present invention, in the short-circuit structure of the wiring portion on the board, the upper surface of the iron plate is Affixed to the surface of multiple short lands and The printed wiring is wired up to the mounting position of the flexible flat cable. Flexible printed circuit board and short run of this flexible printed circuit board. Multiple conductive and magnetic pads that are pressed against the board to short-circuit the printed wiring. And a plurality of these boss-shaped bodies are attached to the lower surface side. A resin cover that is connected to the body and has the electrode wiring for short circuit embedded all inside And a plurality of boss-shaped members of the short-circuiting member. It is pressed against each short land on the printed circuit board and its magnetism creates a short land. By adsorbing and removably fixing and short-circuiting each short land due to its conductivity Since it is configured, the following effects are achieved.

[0025]   That is, the plurality of magnetic bosses of the short-circuit member are connected to the flexible printed circuit board. Press the short land on the upper surface of the Since the wires are short-circuited, there is no need to use solder for soldering as in the past. The pattern of the printed wiring can be short-circuited easily and quickly.   Also, each boss having magnetism is attracted to each short land. So, even if you release your hand from the short-circuit member, the short-circuit member will remain fixed. Without holding a flat-blade screwdriver with your hand like Do not use one hand to attach this pickup when attaching the pickup. You can do the work, and this work is easy to do.

[0026]   According to a third aspect of the invention, a positioning recess is formed in each short land, Fit into the positioning recess of each short land at the tip of the magnetic boss. Since a protrusion for positioning the short-circuit member is provided at Align the protrusions of each boss with the positioning recesses of each short land to position them. You can   Moreover, the magnetism of each boss can attract and fix them to each short land. Therefore, you can pick it up without having to hold a flat-blade screwdriver with your hand as in the past. Do not pick up one hand when installing the There is an advantage that this work can be easily performed because the work of mounting the pump can be performed.

[0027]   According to a fourth aspect of the present invention, the body portion of the boss is a tubular portion formed of synthetic resin. It was made to hang through the wiring inside this tubular part and the tip was exposed to the outside from the tubular part. Since a magnetic rod-shaped body is provided, hold the short-circuit member in your hand and The rod-shaped body exposed from the tip of each tubular body to each short land. When it is attached, the magnetism of each rod will attract and fix it to each short land. This allows you to use a flat-blade screwdriver with your hand instead of Do not pick up one hand when installing the backup and use this pick with both hands. It is easy to do this work because it is possible to perform the up-mounting work.

[0028]   According to a fifth aspect of the present invention, the body portion of the boss is a tubular portion made of synthetic resin. It is suspended inside the tubular part via a spring and the tip is exposed to the outside from the tubular part. The magnetized rod-shaped body is placed, so hold the short-circuiting member in your hand. Move the rod-shaped body exposed from the tip of each cylindrical body to each short run. When pressed against each other, the magnetism of each rod attracts and fixes it to each short land. By doing so, it is not Do not use one hand when installing the pickup The work of mounting the pickup can be done, and this work is easy.   Moreover, since each rod is pressed by the biasing force of the spring, each short run The short-circuit can be accurately made by making sure contact with the cord.

[Brief description of drawings]

FIG. 1 shows a short-circuit structure of a wiring portion on a substrate of a pickup, (a) is a perspective view showing a state of a short land before short-circuiting, and (b) is a perspective view of an iron plate to which the laser diode is attached. is there.

FIG. 2 shows a short-circuit member in the same structure, (a) is a plan view thereof, (b) is a front view thereof, and (c) is a side view thereof.

FIG. 3 is an enlarged cross-sectional view of a short circuit member having the same structure.

4A and 4B show a short-circuit structure of a wiring portion on a substrate of a pickup of a second embodiment, FIG. 4A is a partial perspective view showing a state before a short-circuit of the short land, and FIG. 4B is an enlarged sectional view thereof. .

FIG. 5 shows a main part of a short-circuit member in a short-circuit structure of a wiring part on a substrate of a pickup of another example, (a) shows the first part thereof.
The partial perspective view seen from the lower surface side of an example, (c) is the partial perspective view seen from the lower surface side of the 2nd example.

FIG. 6 is a perspective view schematically showing the external appearance of a conventional VTR-integrated video camera.

FIG. 7 is a plan view illustrating a conventional test board having test points.

[Explanation of symbols]

1 Laser Diode 1a, 1b, 1c Terminal 2 Iron Plate 2a Holes 3A, 3B, 3C Short Lands 3a, 3b, 3c Positioning Recess 4 Flexible Flat Cable Printed Wiring 8 Flexible Printed Circuit Boards 9A, 9B, 9C Conductive Member 10 Spring 11A , 11B, 11C Cylindrical part 12 Electrode wiring 13 Resin cover 14 Shorting members 15A, 15B, 15C Bosses 15a, 15b, 15c Projections 15D, 15E, 15F Main body 15d, 15e, 15f Cylindrical part 16 Wiring 17A , 17B, 17C Rods

Claims (5)

[Scope of utility model registration request] 1. An iron plate having a laser diode of an optical pickup attached to the lower surface thereof, and an iron plate provided with holes for passing a plurality of terminals from the laser diode to the upper surface side, and the iron plate being attached to the upper surface of the iron plate. A flexible printed circuit board provided with a plurality of short lands and a plurality of printed wirings wired from the short lands to the flexible flat cable mounting position on the surface, the plurality of terminals of the laser diode and the plurality of printed wirings. In the short-circuit structure of the wiring portion on the substrate of the pickup, which is connected to each other by solder and protects the laser diode by short-circuiting the short land, the printed wiring is short-circuited by being pressed by the short land of the flexible printed board. Conductive member and the conductive member Is a plurality of cylindrical parts made of magnets inserted through internal springs, and the plurality of cylindrical parts are attached to the lower surface side and connected to the respective springs inside the plurality of cylindrical parts, all connected inside And a short-circuit member consisting of a resin cover in which the short-circuited electrode wiring is embedded,
The plurality of conductive members of the short-circuit member are pressed against the respective short lands on the flexible printed circuit board so that the tubular body is attracted to the short lands due to its magnetism and detachably fixed, and the conductive members are A short-circuit structure of a wiring portion on a substrate of a pickup, characterized in that the springs are constantly pressed against the short lands to short-circuit the short lands. 2. A short circuit structure for a wiring portion on a substrate, wherein a plurality of short lands and a printed wiring wired from the short lands to a flexible flat cable mounting position are attached to the upper surface of an iron plate. Flexible printed circuit board, a plurality of boss-shaped bodies having conductivity and magnetism for pressing the short land of the flexible printed circuit board to short-circuit the printed wiring, and the plurality of boss-shaped bodies on the lower surface side. A plurality of bosses of the short-circuiting member, which are attached and connected to the plurality of boss-like bodies, and a short-circuiting member formed of a resin cover in which all the short-circuiting electrode wirings embedded therein are embedded. The body is pressed against each of the short lands on the flexible printed circuit board and its magnetism attracts and attaches to the short lands. A short-circuit structure for a wiring portion on a substrate, which is configured to be detachably fixed and configured to short-circuit each of the short lands due to its conductivity. 3. A positioning recess is formed in each of the short lands, and the positioning recess of each of the short lands is fitted into the tip of the magnetic boss to position the shorting member. The short-circuit structure of the wiring portion on the substrate according to claim 2, wherein a protrusion is provided. 4. The body portion of the boss-like body comprises a tubular portion made of synthetic resin, and the end portion is magnetically exposed from the tubular portion by being suspended inside the tubular portion via wiring. The short-circuit structure of the wiring portion on the substrate according to claim 2, wherein a rod-shaped body is provided. 5. The body portion of the boss-like body is composed of a cylindrical portion made of synthetic resin, and has a magnetism which is suspended from the cylindrical portion via a spring and whose tip is exposed to the outside from the cylindrical portion. A rod-shaped body is provided, and the rod-shaped body is arranged.
The short-circuit structure of the wiring part on the substrate according to.