JP2009238706A - Electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an erroneous contact between connection terminals having no correlation at the time of electrical connection regarding a portable communication apparatus comprising a communication set body and a cable connector. <P>SOLUTION: The communication apparatus body 10 has a body side connection section 11 comprising a body side connection terminal 11a arranged in parallel on a side face at a zigzag state and a projected ridge 11b extending along both sides of the connection terminal 11a in the parallel direction. The cable connector 20 has a connector side mating section 23 comprising a connector side connection terminal 23a arranged in parallel on its peripheral surface by corresponding to the connection terminal 11a at one-to-one and a recessed ridge 23b extending along both sides of the connection terminal 23a. When the communication apparatus body 10 and the cable connector 20 are connected, the projected ridge 11b is fitted into the recessed ridge 23b at a position only where both connection terminals 11a, 23a are faced each other at one-to-one. Therefore, both connection terminals are permitted to keep in contact with each other at a position only where they are corresponded each other at one-to-one, and the erroneous contact can be prevented at a simple structure. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an electronic device such as a portable wireless communication device.
More specifically, the present invention relates to an electronic device characterized by an electrical connection between an electronic device main body and an external device that can be attached to the electronic device main body.

  Regarding a conventional electrical connection structure of an electronic device including an electronic device main body and an external device that can be attached to the electronic device main body, a portable wireless communication device main body (hereinafter abbreviated as a communication device main body) is used as the electronic device main body. ) And an example of a cable connector connected to a speaker microphone as an external device will be described with reference to FIG.

As shown in FIG. 6, in the conventional wireless communication device 2, a plurality of main body side connection terminals 11 a are exposed in a staggered manner on the outer surface of the communication device main body 10. It is electrically connected to an electronic component built in the machine body 10.
Moreover, the screw hole 12 is provided on the upper end side extension line of the main body side connection terminal 11a in the parallel direction, and the locking hole 13 is provided on the lower end side extension line.

The cable connector 20 includes a cable 22 electrically connected to a speaker microphone (not shown), and a hollow connector 21 that holds an end of the cable 22.
On the outer surface of the connector 21, a plurality of connector side connection terminals 23a corresponding to the main body side connection terminals 11a are arranged and exposed in a zigzag manner. The cable 22 and the connector side connection terminals 23a are connected to each other. 21 is electrically connected.
A fixing screw 24 is rotatably mounted on the upper end side extension line in the parallel direction of the connector side connection terminal 23a, and a tongue piece 25 is provided on the lower end side extension line.

In order to attach the cable connector 20 to the communication device main body 10, first, the connector side connection terminal 23 a of the connector 21 is opposed to the main body side connection terminal 11 a of the communication device main body 10 in an inclined state, and the tongue piece 25 of the connector 21 is attached. Insert into the locking hole 13 of the communication device body 10.
Next, the connector 21 is rotated from the tilted state until the connector side connection terminal 23a and the main body side connection terminal 11a of the communication device main body 10 overlap each other.

In this state, the fixing screw 24 of the connector 21 and the screw hole 12 of the communication device main body 10 face each other. Therefore, when the fixing screw 24 is screwed into the screw hole 12 using a screwdriver, the cable connector 20 is attached to the communication device main body 10. Is completed.
In this attached state, the main body side connection terminal 11a and the cable side connection terminal 23a exposed on the outer surface overlap and come into contact with each other, so that the communication device main body 10 and the cable connector 20 are electrically connected.

With this connection, audio output from the communication device main body 10 can be output to the speaker microphone via the cable connector 20, and audio input from the speaker microphone can be input to the communication device main body 10 via the cable connector 20.
JP 2007-28250 A

  However, the connection terminals 11a and 23a on the main body side and the cable side correspond one-to-one as described above. However, if the positions of the connection terminals 11a and 23a are shifted when they are overlapped, they are inherently compatible. The connecting terminals 11a, 23a and the other connecting terminals 11a, 23a, for example, the connecting terminals 11a, 23a that are adjacent to each other in the vertical and horizontal directions may be in contact with each other.

If such an erroneous contact occurs while the power of the communication device main body 10 is turned on, a short circuit may occur, and an unexpected voltage may be applied to the communication device main body 10 or the speaker microphone, resulting in damage.
Here, in the conventional wireless communication device 2, it is not assumed that the connection work with the cable connector 20 is performed while the communication device main body 10 is turned on, and the communication device main body 10 is always turned off. It was assumed that.
However, during the actual connection work, it is troublesome to turn off the power one by one, so the work with the power on is often performed.

  The erroneous contact between the connection terminals 11a and 23a as described above is not limited to the connection between the illustrated communication device main body 10 and the cable connector 20, but the electronic device main body and an external device electrically connected to the electronic device main body. This is a common problem that can occur in general.

  Accordingly, the problem to be solved by the present invention is that, with respect to an electronic device comprising an electronic device main body and an external device electrically connected to the electronic device main body, connection terminals having no corresponding relationship are erroneously contacted at the time of connection. Is to prevent.

  In order to solve the above-described problems, in the electronic device of the present invention, fitting portions are provided around the connection terminal of the electronic device main body and the connection terminal of the external device, respectively, and the connection terminals are in a one-to-one relationship. These fitting portions fit into each other only at a position opposite to the connection terminals so that the connection terminals can come into contact with each other.

  Specifically, for an electronic device comprising an electronic device main body and an external device that can be electrically connected to the electronic device main body, a plurality of main body sides on which the electronic device main body is arranged in parallel on the outer surface A main body side connection uneven portion including a connection terminal and a main body side fitting uneven portion disposed around the parallel main body side connection terminal, and the external device is provided on the outer surface of each main body side. A plurality of external connection terminals parallel to the connection terminal in a one-to-one correspondence, and disposed around the plurality of external connection terminals parallel to each other, the main body connection terminal and the external connection terminal Adopting a configuration including an external side connection portion that includes an external side fitting uneven portion that fits into the main body side fitting uneven portion only at a position facing the one-to-one and allows contact between the connection terminals. It is.

Due to the fitting structure of the main body side fitting uneven part and the external side fitting uneven part, contact between the connection terminals is allowed only at a position where the main body side connecting terminal and the external side connecting terminal face each other one-on-one. , It is possible to prevent erroneous contact between other connection terminals having no corresponding relationship.
Therefore, a short circuit and damage of the electronic device due to erroneous contact are prevented.

  As a more specific configuration, the body-side fitting uneven portion is a ridge or a groove extending along both sides in the parallel direction of the body-side connection terminal, and the external-side fitting uneven portion is the It is preferable that the concave or convex ridges extending in the parallel direction of the external connection terminals and having the concavo-convex portions that are fitted to the main body side fitting concavo-convex portion are reversed and have a simple structure.

  Here, the electronic device main body is formed on a screw hole formed on one extension line in the parallel direction of the connection terminal of the main body side connection portion and on the other extension line in the parallel direction of the connection terminal of the main body side connection portion. A fixing screw that can be screwed into the screw hole that is attached to one extension line in the parallel direction of the connection terminal of the external connection portion, and the external side This fitting structure is particularly effective in the case of a configuration further comprising a tongue piece formed on the other extension line in the parallel direction of the connection terminal of the connection portion and insertable into the locking hole.

  In this case, the main body side fitting uneven portion further includes a protrusion or a concave line extending in a direction perpendicular to the parallel direction of the main body side connection terminal between the main body side connection terminal and the screw hole, Concavity and convexity that fits with the main body side fitting concavity and convexity, wherein the external fitting concavity and convexity extends between the external connection terminal and the fixing screw in a direction perpendicular to the parallel direction of the external connection terminals. Inverted concaves or ridges may be further provided.

  The electronic device is preferably a wireless communication device including a portable wireless communication device main body as the electronic device main body and a cable connector as the external device.

  The fitting uneven parts can be fitted around the connection terminals of the electronic device main body and the connection terminals of the external devices, and the fitting uneven parts fit only when the connection terminals correspond one-on-one. Since the connection terminals can be brought into contact with each other, erroneous contact is prevented.

  The portable wireless communication device 1 according to the embodiment shown in FIGS. 1 and 2 includes a communication device main body 10 and a cable connector 20 that can be attached to and detached from the right side surface of the communication device main body 10.

As shown in FIG. 1, a speaker grill 15a, a display 15b, a plurality of push buttons 15c, and the like are provided on the front surface of the communication device main body 10 in order from the top.
An antenna 16a, a channel switching knob 16b (selector), a volume adjusting knob 16c, and the like are provided on the top surface of the communication device main body 10.
Further, although not shown in the figure, a PTT (push to talk) switch for switching the transmission / reception state by pressing or releasing is provided on the left side surface of the communication device main body 10.
These speaker grille 15a, display 15b, push button 15c, antenna 16a, channel switching knob 16b, volume adjusting knob 16c, PTT switch, and the like can be electrically connected to the inside of the communication device main body 10.

As shown in FIG. 2, a part of the right side surface of the communication device main body 10 is recessed in a rectangular shape in plan view, and a main body side connection portion 11 to which the cable connector 20 can be connected is provided.
The main body side connection portion 11 includes a plurality of main body side connection terminals 11a exposed in parallel in a staggered manner, and two main body side connection uneven portions extending along both sides in the parallel direction of the main body side connection terminals 11a. Ridges 11b.

As illustrated, the main body side connection terminals 11 a are arranged in parallel in the vertical direction of the communication device main body 10, and each connection terminal 11 a is electrically connected to an electronic component built in the communication device main body 10.
In addition, the tip (outer end) of each connection terminal 11 a is substantially flush with the recessed right side surface of the communication device main body 10.
Each protrusion 11b is integrally formed with the outer surface cover of the communication device main body 10, and the top portion protrudes to a position higher than the tip of the main body side connection terminal 11a.
Moreover, the length of each protrusion 11b is substantially equal to the parallel length of the connection terminal 11a.

Furthermore, a female screw is embedded on the upper end extension line in the parallel direction of the main body side connection terminal 11a to form a screw hole 12, and the parallel direction of the connection terminal is provided on the lower end extension line in the parallel direction of the main body side connection terminal 11a. A locking hole 13 extending in the direction is provided.
An annular elastic member 14 is fitted between the screw hole 12 and the locking hole 13 so as to surround the main body side connecting portion 11.
Incidentally, when the cable connector 20 is not connected to the communication device main body 10, a terminal protection cover that is screwed into the screw hole 12 is attached in order to protect the main body side connection portion 11.

  As shown in FIGS. 1 and 2, the cable connector 20 includes a hollow connector 21 and a cable 22, and the lower end portion of the cable 22 is accommodated and held in the connector 21, and the upper end portion is a speaker (not shown). It is electrically connected to the microphone.

The peripheral surface of the connector 21 is provided with pin-shaped connector-side connection terminals 23a that protrude in parallel in a staggered manner.
Furthermore, two concave strips 23b are provided as connector-side fitting concave-convex portions extending along both sides of the connector-side connection terminal 23a in the parallel direction, and these constitute the connector-side connection portion 23.
The arrangement of the connector side connection terminals 23a is in one-to-one correspondence with the main body side connection terminals 11a, and the arrangement of the ridges 11b with respect to the main body side connection terminals 11a and the arrangement of the ridges 23b with respect to the connector side connection terminals 23a. Is almost similar.
The width, depth, and length of the concave stripes 23b are substantially equal to or slightly larger than the width, height, and length of the convex stripes 11b.
Therefore, the ridges 11b can fit into the ridges 23b with almost no excess or deficiency.
Here, the protruding height of the connector side connection terminal 23a is such that when the protrusion 11b fits into the recess 23b, the tip of the protrusion 11b can come into contact with the main body side connection portion 11, and the protrusion 11b and the recess 23b. When the two do not fit, the tip is adjusted to a height at which the tip cannot contact the main body side connecting portion 11.
The connector side connection terminal 23 a and the cable 22 are electrically connected in the connector 21.

Further, a fixing screw 24 is rotatably attached on the upper end extension line in the parallel direction of the connector side connection terminal 23a, and a tongue piece 25 is integrally provided on the lower end extension line in the parallel direction of the connector side connection terminal 23a. ing.
The arrangement of the fixing screw 24 and the tongue piece 25 with respect to the connector side connecting portion 23 and the arrangement of the screw hole 12 and the locking hole 13 with respect to the main body side connecting portion 11 are substantially similar, and the fixing screw 24 is screwed into the screw hole 12. Each tongue piece 25 is configured to be able to be inserted into the locking hole 13.

  The configuration of the portable wireless communication device 1 according to the embodiment is as described above. Next, a procedure for connecting the cable connector 20 to the communication device main body 10 will be described with reference to FIGS. 3 and 4.

First, as shown in FIG. 3A, the communication device main body 10 and the cable connector 20 are brought close to each other so that the main body side connection portion 11 and the connector side connection portion 23 face each other.
Next, as shown in FIG. 3B, the connector 21 of the cable connector 20 is tilted and the tongue piece 25 is inserted into the locking hole 13 of the communication device main body 10.
In this state, since the ridge 11b of the main body side connection portion 11 contacts the peripheral surface of the connector 21, further communication between the communication device main body 10 and the cable connector 20 is prevented.
Therefore, the main body side connection terminal 11a and the connector side connection terminal 23a do not come in contact during the connection work.

From the inserted state, as shown in FIG. 3C, the main body side connection terminals 11a and the connector side connection terminals 23a face each other one to one, and the connector 21 is rotated to the communication device main body 10 side.
From the positional relationship and the dimensional relationship of the connection terminals 11a and 23a and the protrusions 11b and the recesses 23b described above, the protrusions 11b of the main body side connection part 11 are formed only when the connection terminals 11a and 23a face each other one to one. The connector side connection portion 23 is adapted to fit into the recess 23b.

When the protrusion 11b fits into the recess 23b, each main body side connection terminal 11a and each connector side connection terminal 23a correspond one-to-one, and in this state, the connection terminals 11a and 23a come into contact with each other.
Incidentally, in this contact state, since the elastic member 14 of the communication device main body 10 is in close contact with the outer periphery of the connector-side connection portion 23, the adhesion between the connection portions 11 and 23 is increased.

In this state, since the fixing screw 24 of the connector 21 and the screw hole 12 of the communication device main body 10 face each other, as shown in FIGS. 3D and 4, the fixing screw 24 is inserted into the screw hole 12 using a screwdriver. Screw in.
In this way, the attachment of the cable connector 20 to the communication device body 10 is completed, and at the same time, the electrical connection is completed.
With this connection, audio output from the communication device main body 10 can be output to the speaker microphone via the cable connector 20, and audio input from the speaker microphone can be input to the communication device main body 10 via the cable connector 20.

As described above, the protrusion 11b as the main body side fitting uneven portion and the concave line 23b as the connector side fitting uneven portion are such that each main body side connection terminal 11a and each connector side connection terminal 23a face each other one to one. The connection terminals 11a and 23a are allowed to contact each other only when they are connected.
Accordingly, it is possible to prevent erroneous contact between the connection terminals 11a and 23a having no corresponding relationship, for example, the connection terminals 11a and 23a adjacent to each other in the vertical and horizontal directions, with a simple structure only by providing the protrusions 11b and the recesses 23b. ing.
Thus, the communication device main body 10 and the speaker microphone are prevented from being short-circuited or damaged.

The shape of the ridge 11b as the main body side fitting uneven part and the shape of the concave line 23b as the connector side fitting uneven part is not limited to this embodiment.
For example, as shown in FIGS. 5 (a) and 5 (b), a ridge 11b extending in a direction perpendicular to the parallel direction of the main body side connection terminals 11a is further provided between the main body side connection terminals 11a and the screw holes 12. Correspondingly, a recess 23b extending in a direction orthogonal to the parallel direction of the connector side connection terminal 23a may be provided between the connector side connection terminal 23a and the fixing screw 24.
At this time, as shown in FIG. 5A, the ridges 11b extending in the direction orthogonal to the parallel direction of the main body side connection terminals 11a are continuous with the ridges 11b extending in the parallel direction of the main body side connection terminals 11a. As shown in FIG. 5B, it may be U-shaped or separated.
Incidentally, it is better not to provide a ridge or a groove between the main body side connection terminal 11a and the locking hole 13, and between the connector side connection terminal 23a and the tongue piece 25.
This is because the tongue piece 25 is inserted into the locking hole 13 and hinders the work of rotating the connector 21 toward the communication device main body 10.

Further, intermittent protrusions 11b as shown in FIG. 5C may be provided as long as they fit into the recesses 23b instead of the continuous protrusions 11b.
Of course, the connector 21 may also be an intermittent recess corresponding to the protrusion 11b shown in FIG.

Further, the concave and convex portions may be reversed, the main body side fitting concave and convex portion may be formed into a concave strip, and the connector side fitting concave and convex portion may be formed into a convex strip.
Furthermore, it is good also as a shape in which the unevenness | corrugation which a main part side fitting uneven | corrugated part continues alternately is uneven | corrugated, and the unevenness | corrugation which a connector side fitting uneven | corrugated | grooved part fits in a complementary shape with this alternately.

In other words, the main body side fitting uneven portion and the connector side fitting uneven portion are fitted only at a position where the main body side connecting terminal 11a and the connector side connecting terminal 23a face each other one to one, and the connecting terminals 11a and 23a are connected to each other. It is only necessary to have a fitting structure that allows the contact.
The main body side fitting uneven portion and the connector side fitting uneven portion do not necessarily have a complementary shape as shown in the example of FIG.

The attachment structure of the cable connector 20 to the communication device main body 10 is not limited to the fixing screw 24 and the screw hole 12, and the tongue piece 25 and the locking hole 13, and a well-known attachment structure can be adopted.
Moreover, the member for attachment may be replaced | exchanged, a tongue piece may be provided in the communication apparatus main body 10 side, and the locking hole may be provided in the connector 21. FIG.
The cable connector 20 and the communication device main body 10 may be attached via separate fixing tools.
The parallel pattern of the connection terminals 11a and 23a is not limited to a staggered pattern, and it only needs to correspond one to one.
Of course, the elastic member 14 can be omitted, and the cable connector 20 may be electrically connected to a device other than the speaker microphone.

In this embodiment, the wireless communication device 1 including the communication device body 10 and the cable connector 20 has been described. However, the present invention can be widely applied to an electronic device body and an external device that can be electrically connected thereto. .
Of course, the present invention can be applied even when the communication device body 10 is not a portable type but a stationary type.

Whole perspective view which shows the connection state of the communication apparatus main body and cable connector of embodiment The principal part perspective view which shows the isolation | separation state of the communication apparatus main body and cable connector of embodiment Cross-sectional view of the main part showing the procedure for connecting the communication device body and cable connector of the embodiment Plan view of a connection part of a wireless communication device of an embodiment The top view which shows the other example of the main body side connection part of embodiment Main part perspective view showing separation state of conventional communication device main body and cable connector

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radio communication apparatus 2 Conventional radio communication apparatus 10 Communication apparatus main body 11 Main body side connection part 11a Connection terminal 11b Convex strip 12 Screw hole 13 Locking hole 14 Elastic member 15a Speaker grill 15b Display 15c Push button 16a Antenna 16b Channel Switching knob 16c Volume adjusting knob 20 Cable connector 21 Connector 22 Cable 23 Connector side connection portion 23a Connection terminal 23b Concave strip 24 Fixing screw 25 Tongue piece

Claims (5)

An electronic device body,
An external device that can be electrically connected to the electronic device body, and an electronic device comprising:
The electronic device body is
A plurality of main body side connection terminals arranged in parallel on the outer surface;
A main body side connection portion comprising a main body side fitting uneven portion disposed around the parallel main body side connection terminals,
The external device is
On the outer surface, a plurality of external connection terminals parallel to each main body side connection terminal in a one-to-one correspondence;
Arranged around the plurality of external connection terminals arranged in parallel, the main body side connection terminals and the external connection terminals are fitted to the main body side fitting uneven parts only at a position facing the one to one. An electronic apparatus comprising: an external side connection portion including an external side fitting uneven portion allowing contact between the connection terminals. The main body side fitting uneven part is a ridge or a concave line extending along both sides in the parallel direction of the main body side connection terminals,
The external attachment-side fitting irregularities are concave or convex ridges having inverted irregularities that extend along both sides of the external-side connection terminals in the parallel direction and can be fitted to the main-body-side fitting irregularities. Item 3. The electronic device according to Item 2. The electronic device body is
A screw hole formed on one extension line in the parallel direction of the connection terminal of the main body side connection portion;
A locking hole formed on the other extension line in the parallel direction of the connection terminal of the main body side connection portion, and
The external device is
A fixing screw that can be screwed into the screw hole attached on one extension line in the parallel direction of the connection terminal of the external connection portion;
The electronic device according to claim 2, further comprising a tongue piece that is formed on the other extension line in the parallel direction of the connection terminal of the external connection portion and that can be inserted into the locking hole. The main body side fitting uneven part further includes a ridge or a concave line extending between the main body side connection terminal and the screw hole in a direction perpendicular to the parallel direction of the main body side connection terminal,
The external fitting concavo-convex portion is fitted with the main fitting fitting concavo-convex portion that extends between the external connection terminal and the fixing screw in a direction orthogonal to the parallel direction of the external connection terminal. The electronic device according to claim 3, further comprising a concave or convex ridge having inverted possible irregularities. The electronic device body is a portable wireless communication device body,
The electronic device according to claim 1, wherein the external device is a cable connector that can be electrically connected to the wireless communication device main body.

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