JPH0427105Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a jack that is attached to electrical equipment such as various audio equipment.

[Conventional technology]

The corners of printed wiring boards used in audio equipment and other electrical equipment are dead spaces where no components are mounted. The components are soldered to conductive patterns formed in areas other than the corners of the printed wiring board.

A conventional jack has a body having a plug insertion hole and a terminal protruding from the body. Therefore, when the terminal is soldered to the conductive pattern formed in the above-mentioned area of the printed wiring board, the body must be attached to a flat surface such as the front, rear, or side surface of the outer case of the device.

However, there is a noticeable trend in modern electrical equipment to become lighter, thinner, shorter, and smaller. Of course, it is necessary to take measures such as There were difficulties in securing space. Therefore, consideration has been given to reducing the number of parts and operating members to be arranged on flat surfaces such as the front, rear, and side surfaces by disposing some of the parts and operating members in the corners of the outer case of the device.

[Problem that the invention attempts to solve]

However, as mentioned above, conventional jacks are configured to be soldered to conductive patterns formed in areas other than the corners of the printed wiring board, so it is difficult to place this jack in the corners of the outer case. The problem was that it was difficult.

In addition, in conventional jacks, electrical contact was obtained by soldering the terminals to the conductive patterns on the printed wiring board, so the soldering process not only complicated the manufacturing process of the device, but also There was also the problem that the outer case of the device had to be removed each time it was needed for maintenance or repair, making the work cumbersome.

This idea allows the terminals of the jack to be connected to conductive patterns formed in the corners of the printed wiring board, thereby making it possible to install the jack in the corners of the outer case of the device, while also making it possible to place the jack in the corner of the outer case of the device, which would otherwise require a dead space. To provide a jack which makes effective use of corners of a printed wiring board that are not used as a board and which can be quickly and easily mounted and removed.

[Means for solving problems]

The means taken to achieve the above object is that the body is provided with two inclined surfaces that come into contact with the end surfaces on both sides sandwiching the corner of the printed wiring board. A contact piece is extended to be pressed into contact with a conductive pattern formed near a corner of the printed wiring board.

[Effect]

According to the jack constructed as described above, by bringing the two inclined surfaces of the body into contact with the end surfaces on both sides sandwiching the corner portion of the printed wiring board,
The body is positioned at the corner of the printed wiring board, and contact pieces extending from the terminals are pressed against conductive patterns formed near the corners of the printed wiring board to establish electrical connection. Therefore, if you make a mounting hole facing the corner of the printed wiring board in the corner of the outer case of the device that houses the printed wiring board, you can easily position the body and connect the terminals by simply fitting the body into the mounting hole. An electrical connection is made with the conductive pattern.

〔Example〕

FIG. 1 shows a jack J according to a first embodiment of this invention. Reference numeral 1 has a box-shaped body, and the front end thereof is provided with a flange portion 2 that protrudes from side to side.A pedestal portion 3 for a printed wiring board P, which will be described later, is protruded from the rear end. An inclined guide surface 4 is formed at the tip. Further, stepped portions 5 and 6 are provided between the rear end portion of the body 1 and the pedestal portion 3, and sloped surfaces 7 that are perpendicular to each other are provided at the ends of these stepped portions 5 and 6. , 8 are formed. body 1
Three grooves 9, 10, and 11 are provided on the upper and lower wall surfaces of the terminal accommodating space provided in the terminal housing space. 1
Reference numeral 2 denotes a mounting screw insertion hole formed in the flange 2, and 13 a plug insertion hole provided in the flange 2, which communicates with the terminal accommodating space. Next, 20 is a terminal forming a normally closed contact, which has a recess 21 formed at its front end and a contact piece 22 extending from its rear end. The contact piece 22 has a generally triangular wide portion 23 at its tip, and a through hole 24 is provided in the wide portion 23 . Reference numeral 30 denotes a terminal forming a movable contact, with a folded movable contact 31 formed at its front end and a contact piece 32 extending from its rear end. 40 is a terminal forming a ground contact, and contact pieces 41 and 4 are provided at the front and rear ends of the terminal, respectively.
2 has been extended. Note that the contact pieces 32, 42
is configured to have the same shape as the contact piece 22 extending from the terminal 20 forming a normally closed contact. 33 and 43 are wide parts, and 34 and 44 are through holes. Of the three terminals 20, 30, and 40 described above, the terminal 20 is fitted into the groove 10 of the body 1, the terminal 30 is fitted into the groove 11, and the terminal 40 is fitted into the groove 9.

In such a jack J, when the pin-shaped terminal of the plug is inserted into the plug insertion hole 13, the pin-shaped contact piece of the plug fits into the recess 21 of the terminal 20.
A pin-shaped terminal is electrically connected to the movable contact piece 31 and the ground contact piece 41.

2 and 3 show a state in which the jack J is placed at a corner C of a printed wiring board P. In this state, the two inclined surfaces 7 and 8 of the jack J are in contact with the end faces on both sides of the printed wiring board P that sandwich the corner C, thereby positioning the body with respect to the printed wiring board P. Further, the printed wiring board P is supported by the pedestal part 3, and the contact pieces 22, 32, 42 are pressure-contacted with the conductive patterns P ₁ , P ₂ , P ₃ formed on the corner part C of the printed wiring board P. are doing. This press-contact state is shown in Fig. 4.
2, the wide portion 43 of the contact piece 42 is maintained by elastically deforming from the position of the imaginary line to the position of the solid line. Other contact pieces 22, 32
The same applies to

A jack J is attached to the corner C of the printed wiring board P.
When deploying, it is sufficient to simply insert the pedestal part 3 of the body 1 into the back side of the printed wiring board P. In this way, the two inclined surfaces 7 and 8 come into contact with the end surfaces on both sides of the printed wiring board P that sandwich the corner C, and the contact pieces 22, 32, and 42 contact the conductive patterns P ₁ and P of the printed wiring board P. ₂ , climb onto P ₃ and press them together as described above.

FIG. 4 shows an example in which a jack J is attached to a corner portion 51 of an outer case 50 of an audio device or the like. For installation, after fitting the body 1 into the mounting hole (not shown) made in the corner portion 51,
This is done by screwing a mounting screw inserted into the mounting screw insertion hole 12 shown in FIG. 1 into a mounting seat (not shown) provided in the corner portion 51. When the jack J is attached to the corner portion 51 of the outer case 50 in this way, there is no need to secure an attachment space for the jack J on the front surface 52 of the outer case 50. Not only can you secure a wide space for installing things such as the display window, but also the plug can be inserted and removed from the jack without any inconvenience even when other equipment is placed side by side, such as a mini-component.

By the way, there are two types of plugs that can be inserted into and removed from a jack: a so-called straight type plug and a so-called L-type plug. A straight plug has a pin-shaped terminal equipped with a straight gripping portion, and when the plug is inserted into a jack, the protruding width of the gripping portion is relatively large. When the jack is attached to a flat surface such as the front or side of the outer case of the device, the lead wire of the plug should not be drawn out in the front or near the front of the jack mounting surface. It is extremely bent at the beginning. Therefore, if such usage conditions are repeated, the lead wires are likely to break. but,
If the jack is attached to the corner portion 51 of the outer case 50 as described above, there is less risk of the lead wire breaking. This is because the person wearing earphones etc. is rarely located directly in front of the front 52 or side 53 of the outer case 50 of the device, and in most cases is located close to the front of the corner 51 of the outer case 50. This is probably because the lead wire is difficult to bend. Also, the L-shaped plug has the fifth
As shown in the figure, a pin-shaped terminal 61 is provided with a grip portion 62 at a substantially right angle. When using such an L-shaped plug by inserting it into the jack J, if the jack J is attached to the corner part 51 of the outer case 50 as shown in Figs. 4 and 5, the starting end of the lead wire will be While the lead wire is pulled out diagonally to the front surface 52 and side surface 53 of the outer case 50, when the jack is attached to the front surface and side surface of the outer case, the starting end of the lead wire is parallel to the front surface and side surface of the outer case. drawn out. Therefore, the possibility of the lead wire breaking is greater when the jack is attached to the front or side of the outer case. Further, since the grip portion 62 of the plug 60 used particularly in micro-sized devices is very small, it is difficult to insert or remove the plug into the jack J. For example, if the jack is attached to a flat surface of the outer case of a micro-compact device, when the pin terminal of the plug is inserted into the jack, the entire gripping part of the plug will hit the flat surface. It has been found that it becomes difficult to extract. On the other hand, when the jack J is attached to the corner portion 51 of the outer case 50 as shown in FIG. This has the advantage that it can be easily pulled out by grasping the raised portion, and moreover, it is difficult to apply excessive force to the plug 60 at this time.

FIG. 6 shows a jack J according to a second embodiment. In this embodiment, two right-angled inclined surfaces 7 and 8 provided on the body 1 are formed in a V-shape on the rear end surface of the body 1. Also, three terminals 2
Contact pieces 22, 32, 4 extending to 0, 30, 40
2 has projecting pieces 22', 32', and 42' extending from the terminals 20, 30, and 40, respectively, facing each other at a predetermined interval. the three terminals 20, 30,
40 is fitted into the grooves 10, 11, and 9 of the body 1. According to this jack J, as shown in FIG. 7, the two inclined surfaces 7 and 8 abut against the end faces on both sides sandwiching the corner portion C of the plug wiring board P, so that the body 1 is positioned relative to the jack J, and at the same time , between the contact piece 22 and the protruding piece 22' explained in FIG.
A printed wiring board P is sandwiched between the contact piece 42 and the protruding piece 32', and between the contact piece 42 and the protruding piece 42'.
2 and 42 are pressed against conductive patterns P ₁ , P ₂ , and P ₃ formed on the corner portion C of the printed wiring board P.
FIG. 8 shows a state in which the printed wiring board P is sandwiched between the contact piece 32 and the protruding piece 32'. Such a jack J also provides the same effect as the jack J explained in the first embodiment. In addition, in order to simplify the explanation, in FIGS. 6 to 8, the first to
The same parts as those explained in FIG. 3 are given the same reference numerals.

Although the jacks described above are all attached to the outer case of the equipment using mounting screws, other means for attaching the jacks may be used. For example, an elastically deformable engaging claw is formed on the body of the jack, and the body is fitted into a mounting hole formed in the outer case of the device, so that the engaging claw is engaged with the peripheral edge of the mounting hole. May be adopted. According to this, the advantage is that the jack can be attached and removed in a one-touch manner.

The idea of this invention can be applied not only to jacks but also to other parts including terminals connected to printed wiring boards, such as switches.

[Effect of idea]

As explained above, the jack of this invention is
The body is provided with two inclined surfaces that come into contact with the end faces on both sides sandwiching the corner portion of the printed wiring board, and the terminal built into the body is provided with two inclined surfaces formed near the corner portion of the printed wiring board. Since the contact piece that is pressed into contact with the conductive pattern is extended, it is now possible to place it in the corner of the printed wiring board, which was previously impossible. Not only can the corners of the wiring board be used effectively, but also the jack can be placed in the corner of the outer case of the device. Therefore, it is no longer necessary to secure mounting space for the jack on flat surfaces such as the front, rear, and side surfaces of the external case of the device, which not only allows for a wider space for mounting other parts and operating members, but also allows for the installation of mini-components. In cases where it is difficult to arrange a jack on the side surface of the outer case, there is an advantage that the jack can be attached without securing a space for attaching the jack on the front surface of the outer case.

In addition, in the jack of this invention, an electrical connection can be obtained by press-contacting the contact piece extending from the terminal to the conductive pattern of the printed wiring board, so there is no need to solder the terminal, which was previously necessary. This not only eliminates the need for labor and reduces the manufacturing process of the equipment, but also allows the jack to be attached and removed from the outside of the outer case of the equipment, which is advantageous in maintaining and repairing the jack.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a jack according to the first embodiment of this invention, Fig. 2 is a partially cutaway plan view showing the jack installed in a corner of a printed wiring board, and Fig. 3 shows the same state. 4 is a schematic perspective view illustrating a state where the jack is attached to the corner of the outer case of the device, and FIG. 5 is a side view showing the jack attached to the corner of the outer case of the device.
A schematic partial plan view showing the state in which the shaped plug is attached;
FIG. 6 is an exploded perspective view of the jack according to the second embodiment, FIG. 7 is a plan view showing the jack placed in a corner of a printed wiring board, and FIG. 8 is a side view showing the same state. J... Jack, P... Printed wiring board, C
...Corner part of printed wiring board, P ₁ , P ₂ , P ₃
... Conductive pattern, 1 ... Body, 7, 8 ... Inclined surface, 20, 30, 40 ... Terminal, 22, 32,
42...Touch piece.

Claims (1)

[Scope of utility model registration request] The body is provided with two inclined surfaces that come into contact with the end surfaces on both sides sandwiching the corner portion of the printed wiring board,
A jack characterized in that a terminal built into the body has a contact piece extending therefrom which is pressed into contact with a conductive pattern formed near a corner of the printed wiring board.