JP2003344494A - Emulator probe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress noise generation, miniaturize a connection mechanism for a directional change, facilitate usage and reduce cost by enabling a selection of an insertion direction of a cable in an emulator probe. <P>SOLUTION: The emulator probe has a printed circuit board 3 mounted with a connector 2 and connected with the cable 1; a housing 5 comprising a side plate 11 and a top plate for covering the cable connection side, and having dents 8 and arc window 4 in the top plate; and a screwlike protrusion 7 for holding the cable 1 via the dents 8 and the arc window 4. The protrusion 7 is engaged at a threaded portion with a protrusion receiving part 6 fixed by a clamp 9 for the cable 1, and is fixed in place in the dent 8. A range for a degree of freedom in the insertion direction of the cable 1 corresponds to the length of the arc window 4, and is formed by a cutout in the side plate 11. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emulator probe, and more particularly to an emulator probe for changing a cable introducing direction or a connecting direction.

[0002]

2. Description of the Related Art Such a conventional emulator probe is disclosed in, for example, Japanese Unexamined Patent Publication No. 8-146092.

FIG. 10 is an exploded perspective view of an emulator probe for explaining such a conventional example. As shown in FIG. 10, in the conventional emulator probe, when connecting the emulator cable 23 to the user target board 21, in order to select the direction of introduction of the cable, in order to solder to the foot pattern 22 of the board 21, A semi-circular through-hole board 26 having a relay connector 31 is mounted, and a connector 29 on the rear surface and a connector 30 on the front surface are orthogonally arranged via a direction conversion board 27, and a cable mounting board for an emulator cable 23 in which a connector 25 is formed. It is realized by mounting 24 on it.

Alternatively, instead of the direction changing board 27, a microcomputer mounting board 28 having a connector 29 formed in the same direction as the connector 31 on the back surface and a connector 32 for the microcomputer formed on the front surface is used, and the connecting direction of the cable 23 is used. You can change.

As described above, the conventional emulator probe can select the cable 2 by selecting whether the direction change board 10 or the microcomputer mounting board 28 is provided between the user target board 21 and the emulator cable 23.
The introduction direction of 3 can be selected.

[0006]

The above-mentioned conventional emulator probe has the following drawbacks.

That is, the first drawback is that since the direction conversion board and the two-stage connector are inserted between the target board and the emulator cable, deterioration of analog signals, that is, noise is likely to occur.

The second drawback is that since the positions of signals are exchanged on the direction conversion board, the larger the number of signals to be handled, the larger the size of the direction conversion board, which hinders downsizing in the vicinity of the connection portion. Is.

The third drawback is that the number of parts required for connection increases, which causes confusion for the user.

Further, the fourth drawback is that the direction change board has to be developed separately from the emulator probe, resulting in a large development cost.

An object of the present invention is to solve the above-mentioned drawbacks, and particularly to solve the problems such as suppression of noise generation, downsizing of a connecting portion mechanism for direction change, ease of use, and cost reduction. The purpose is to provide an emulator probe that can.

[0012]

The emulator probe of the present invention covers a printed circuit board having a connector mounted on one surface and a cable connected to the other surface and a side of the printed circuit board to which the cable is connected. A side plate and a top plate, and a housing having a recess and an arc-shaped window formed in the top plate, and a cable holding mechanism for holding the cable through the recess and the arc-shaped window, The housing is formed by notching the side plate of the housing so as to form a region having a degree of freedom in the introduction direction of the cable.

Also, the emulator probe of the present invention is
A printed circuit board having a connector mounted on one surface and a cable connected to the other surface, a side plate and a top plate for covering the side of the printed circuit board to which the cable is connected are provided, and 2 are provided inside the top plate. And a cable holding mechanism for holding the cable by the two arc-shaped rails and a housing having a recess formed by connecting the two arc-shaped rails. It is constructed by notching the side plate of the housing to form a region having directional freedom.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The emulator probe of the present invention has a mechanism for selecting the introduction direction of a cable and solves the above-mentioned problems. And explain.

FIG. 1 is an exploded perspective view of an emulator probe for explaining the first embodiment of the present invention. As shown in FIG. 1, in this embodiment, a side plate (wall) is provided for a printed circuit board 3 on which a coaxial cable 1 and a connector 2 are mounted.
A part of 11 is covered with a notched box-shaped housing 5, and a top plate of the housing 5 is provided with an arcuate window 4 and a recess 8 for engaging with a projection receiving portion 6 fixed to the coaxial cable 1. The projection 7 is attached through the arcuate window 4 and the recess 8.

That is, in this emulator probe, there is no wall on the periphery of the cable introduction direction,
Housing 5 with an arcuate window 4 of approximately 90 degrees formed on the top
And the screw-shaped protrusion 7 is attached to the screw hole of the protrusion receiving portion 6 fixed to the stopper 9 of the cable 1 through the arcuate window 4. Both ends of the arcuate window 4 form a recess 8 extending outward of the housing 5. Also, the projection receiving portion 6
Although is shown here as a cylindrical shape and has a screw hole formed in the center, it may be formed in a rectangular parallelepiped shape in view of the relationship with the fastener 9. The coaxial cable 1 has wiring (core wire) 10 connected on the back surface of the printed circuit board 3, and a connector 2 for mounting various devices such as microcomputers or ICs on the front surface side of the printed circuit board 3. It

As described above, in the present embodiment, 90 measured from the center of the housing 5 in the introduction direction of the coaxial cable 1.
The screw-shaped projection 7 and the depression 8 allow the cable 1 to be fixed in two directions in which the cable 1 is introduced at right angles to the housing 5.

FIG. 2 is an enlarged perspective view of the holding mechanism for the coaxial cable shown in FIG. As shown in FIG. 2, this cable holding mechanism uses a rectangular parallelepiped-shaped projection receiving portion 6, and with respect to the shield layer 12 of the coaxial cable 1, a metal fitting 9 surrounding the shield layer 12 and a top surface and side surfaces are provided. Screw hole 1
5 is attached to the metal fitting 6 with screws 13 and nuts 14. This stopper 6 has a screw hole 1 on its upper surface.
A screw-shaped protrusion 7 can be attached to the device 5.

FIGS. 3 (a) to 3 (c) are perspective views for explaining the usage state of the first embodiment of the emulator probe shown in FIG. This emulator probe is used with the housing 5 engaged with the printed circuit board 3, and is configured so that the cable 1 can move in a space without the side plate 11.

First, as shown in FIG. 3 (a), in this emulator probe, the screw-shaped protrusion 7 has a recess 8A and a recess 8A.
It shows a state in which it is not fitted to any of B. Therefore, the cable 1 is in a state where it can freely move laterally in the space without the side plate 11, as shown by the arrow.

As shown in FIG. 3 (b), the emulator probe has the projection 7 fitted in the recess 8A, and the introduction direction of the cable 1 is fixed to the right side of the probe. . By applying a force to the cable 1 in the direction of approaching the housing, (a)
The state shown in the figure can be entered.

Further, as shown in FIG. 3 (c), the emulator probe has the projection 7 fitted in the recess 8B, and the introduction direction of the cable 1 is fixed to the left side of the probe. . Also in this case, as in the case of FIG. 2B, by applying a force to the cable 1 in the direction of approaching the housing, the state of FIG.

In any of these states (a) to (c), the support mechanism formed by the projection 7 and the housing 5 acts against the force applied to the cable 1 toward the housing 5 and the force applied to the cable 5 away from the housing 5. There is no risk of damaging the connection portion between the cable inside the housing and the printed circuit board 2 due to the resistance due to.

As described above, according to this embodiment, since a connector for changing the direction is not required, it is resistant to noise and can be downsized even if the connecting mechanism is used. Moreover, since the components required for connection can be minimized, the user's confusion is not caused and the development cost can be minimized. Further, since the introduction direction of the cable can be fixed, the work after connection becomes easy, there is no fear of breaking the connection part between the cable inside the housing and the printed circuit board, and it becomes easy to make the shield layer of the cable the ground level. .

Hereinafter, second to fifth examples of the first embodiment of the present invention will be referred to with reference to FIGS. 4 to 7, and further implementations of the second and third embodiments will be described. An example will be described with reference to FIGS. 8 and 9.

FIG. 4 is a perspective view showing a second embodiment of the emulator probe shown in FIG. As shown in FIG. 4, this emulator probe is an example in which three recesses 8A to 8C are formed in the arcuate window 4 formed in the top plate of the housing 5. By increasing the number of the depressions 8A to 8C, it is possible to increase the number of positions where the introduction direction of the cable 1 is fixed. For example, since the protrusion 7 can be fixed to the central depression 8C, the cable 1 can be used widely. Further, the position for fixing the introduction direction of the cable 1 does not have to be at a right angle to the side plate (wall) 11 of the housing 5, and can be set at an arbitrary angle as in this case. Also in this case, the same advantages as those of the first embodiment described above can be obtained.

FIG. 5 is a perspective view showing a third embodiment of the emulator probe shown in FIG. As shown in FIG. 5, this emulator probe is an example in which the arcuate window 16 on the upper part of the housing 5 is expanded to 180 degrees and the side plate 11 is expanded similarly to the arcuate window 16. If there is no problem with the flexibility of the cable 1, set the range of the arcuate window 16 to 1
It can be expanded to 80 degrees, and in that case, the introduction direction of the cable 1 has a degree of freedom of about a half circle measured from the center of the housing. Also in this case, the same advantages as those of the first embodiment described above can be obtained.

FIG. 6 is a perspective view showing a fourth embodiment of the emulator probe shown in FIG. As shown in FIG. 6, in this emulator probe, the arc-shaped window 17 on the upper portion of the housing 5 has a spread of 270 degrees, and
The side plate 11 is expanded in the same manner as the arcuate window 17, and two recesses 8C and 8C are provided between the recesses 8A and 8B at both ends of the arcuate window 17.
It is the example which formed D. In this way, if there is no problem in the flexibility of the cable 1, the range of the arcuate window 17 can be widened, and in that case, the direction of introduction of the cable 1 is measured from the center of the housing 5 and the degree of freedom of 270 degrees is realized. can do. Also in this case, the same advantages as those of the first embodiment described above can be obtained.

FIG. 7 is a perspective view showing a fifth embodiment of the emulator probe shown in FIG. As shown in FIG. 7, this emulator probe is an example in which the housing 18 and the printed circuit board 3 have a circular shape, and the side plate 11 is formed so as to match the outer circumference of the circular shape. Also in this case, the same advantages as those of the first embodiment described above can be obtained.

In the second to fifth embodiments based on FIGS. 4 to 7 described above, in fixing the cable 1, the projection 7 and the projection receiving portion 6 are fixed as in the first embodiment of FIG. It is done by fixing to.

FIG. 8 is an enlarged perspective view of an emulator probe for explaining the second embodiment of the present invention. As shown in FIG. 8, the present embodiment is different from the above-described first embodiment in that an arc-shaped window is not formed in the top plate of the housing 5. Instead of forming the arcuate window, two arcuate rails 19 are attached to the inner surface of the top plate of the housing 5, and the fixing projections 7 are arranged between the rails 19. In the present embodiment, since the protrusion 7 attached to the protrusion receiving portion 6 of the stopper 9 of the cable 1 is fitted to the arc-shaped rail 19,
The same function as the case of the arcuate window (for example, the arcuate window 4 in FIG. 1) described above is realized. The ends of the two arcuate rails are joined together with a bulge in order to achieve the same function as the recess 8. Further, also in this embodiment, an arbitrary number of recesses can be formed between the recesses 8 at both ends, as in the first embodiment.

In the present embodiment, the processing of the housing 5 becomes somewhat complicated, but the unevenness on the outside of the top plate of the housing 5 is eliminated, so that stacking is facilitated. Also in this case, the same advantages as those of the above-described first embodiment can be obtained.

FIG. 9 is an enlarged perspective view of an emulator probe for explaining the third embodiment of the present invention. As shown in FIG. 9, in the present embodiment, like the second embodiment described above, two arc-shaped rails 19 are attached to the inner surface of the top plate of the housing 5 and fixed between the rails 19. Although the projections 7A for use are arranged, the difference from the second embodiment is that the two arc-shaped rails 20 are also provided on the printed circuit board 3.
Is attached and the fixing projections 7B are arranged also between the rails 20. In short, the strength of the housing 5 can be increased because the cable 1 is held up and down, that is, the protrusions 7A and 7B fitted in the upper and lower portions of the cable 1 serve as columns for supporting the housing 5 and the printed circuit board 3. Also in this case, the same advantages as those of the first and second embodiments can be obtained.

[0034]

As described above, the emulator probe of the present invention has the following effects.

The first effect is that a connector for direction change is not required as compared with the conventional example, so that it is strong against noise and does not cause deterioration of analog signals and the like.

Unlike the conventional example, the second effect can be realized regardless of the number of signals to be handled, so that the connecting mechanism can be downsized.

The third effect is that the number of parts required for connection can be minimized, so that the user is not confused.

The fourth effect is that the development cost is minimized because the development target is only the emulator probe.

The fifth effect is that the cable introduction direction can be fixed by fitting the recesses and the protrusions on the upper part of the housing,
Does not interfere with work after connection.

The sixth effect is that there is no fear of breaking the connecting portion between the cable and the printed circuit board inside the housing by the supporting mechanism by the projection and the housing.

A seventh effect is that the metal fitting surrounding the shield layer of the cable, the metal fitting, the screw-shaped projection, and the material of the housing are used as conductors to electrically connect the shield layer of the cable and the housing. Therefore, it becomes easy to bring the shield layer of the cable to the ground level.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an emulator probe for explaining a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a holding mechanism for the coaxial cable in FIG.

FIG. 3 is a perspective view for explaining a usage state of a first embodiment of the emulator probe shown in FIG.

FIG. 4 is a perspective view showing a second embodiment of the emulator probe shown in FIG.

5 is a perspective view showing a third embodiment of the emulator probe shown in FIG. 1. FIG.

FIG. 6 is a perspective view showing a fourth embodiment of the emulator probe shown in FIG.

FIG. 7 is a perspective view showing a fifth embodiment of the emulator probe shown in FIG.

FIG. 8 is an enlarged perspective view of an emulator probe for explaining a second embodiment of the present invention.

FIG. 9 is an enlarged perspective view of an emulator probe for explaining a third embodiment of the present invention.

FIG. 10 is an exploded perspective view of an emulator probe for explaining a conventional example.

[Explanation of symbols]

1 coaxial cable 2 connectors 3 printed circuit boards 4,16,17 arc window 5,18 housing 6,6A, 6B Projection receiving part 7,7A, 7B Screw-shaped protrusion 8,8A-8C depression 9 metal fittings 10 wiring 11 side plate 12 Shield layer 15 screw holes 19,20 circular rail

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Makoto Shiragaki             1-403 Kosugi-cho, Nakahara-ku, Kawasaki-shi, Kanagawa             53 NC Micro Systems Stock Association             In-house F-term (reference) 2G011 AC00 AE00 AF02                 2G132 AF01                 5E021 FA05 FA09 FB03 FB11 FB30                       FC03 FC21 FC29 GA01 GB06

Claims (10)

[Claims] 1. A printed circuit board having a connector mounted on one surface and a cable connected to the other surface, a side plate and a top plate for covering the side of the printed circuit board to which the cable is connected, and the top plate. A region having a housing in which a recess and an arc-shaped window are formed in a plate and a cable holding mechanism for holding the cable through the recess and the arc-shaped window, and having a degree of freedom in the introduction direction of the cable An emulator probe, wherein the side plate of the housing is cut out to form a housing. 2. The cable holding mechanism includes a screw-shaped protrusion having a head protruding outward from the recess and the arcuate window, a protrusion receiving portion for receiving a screw portion of the screw-shaped protrusion, and the protrusion receiving portion. 2. The emulator probe according to claim 1, wherein the emulator probe is formed of a stopper fitting attached to the cable. 3. The emulator probe according to claim 1, wherein the region having the degree of freedom in the introduction direction of the cable is formed by notching the side plate corresponding to the length of the arcuate window. 4. The recess formed in the housing is
The emulator probe according to claim 1, wherein the emulator probe is formed at both ends of the arcuate window. 5. The angle of the arcuate window is 90 degrees, 180 degrees.
2. The emulator probe according to claim 1, wherein the emulator probe is formed at any one of 270 degrees and 270 degrees. 6. The emulator probe according to claim 1, wherein at least one recess is formed at both ends of the arcuate window and between them. 7. The top plate of the housing and the printed circuit board are formed in a disc shape, and the side plates are arranged on the circumference of the top plate and the printed circuit board. Emulator probe. 8. A printed circuit board having a connector mounted on one surface and a cable connected to the other surface, a side plate and a top plate for covering a side of the printed circuit board to which the cable is connected, and the top plate. A housing having two arc-shaped rails and a recess formed by coupling the two arc-shaped rails inside the plate, and a cable holding mechanism for holding the cable by the two arc-shaped rails. An emulator probe, wherein the side plate of the housing is cut out to form an area having a degree of freedom in a direction of introduction of the cable. 9. The cable holding mechanism includes a screw-shaped projection whose head is held by the two arc-shaped rails, a projection receiving portion that receives a screw portion of the screw-shaped projection, and the projection receiving portion. 9. The emulator probe according to claim 8, wherein the emulator probe is formed with a stopper attached to the cable. 10. The printed circuit board comprises, on the side to which the cable is connected, two other arc-shaped rails formed inside the top plate and two other arc-shaped rails corresponding to the recesses connecting the arc-shaped rails. 9. An arc-shaped rail and a recess that connects the arc-shaped rail are formed, and a cable holding mechanism for holding the cable by the other two arc-shaped rails is provided. Emulator probe.