JPS636862Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical contact mechanism for electrically connecting a pair of electronic devices that are coupled and separated from each other in the coupled state.
Conventionally, this type of electrical contact mechanism has a function of mechanically and automatically cleaning the terminals that electrically connect a pair of electronic devices when they are connected to each other. The target contact mechanism has drawbacks such as a large number of parts and a large number of assembly steps, a complicated structure and high cost, and an inability to achieve a very high cleaning effect.

The present invention was devised to correct the above-mentioned defects, and each time a pair of electronic devices is connected or separated, it is possible to mechanically and automatically clean the terminals that electrically connect them. It is an object of the present invention to provide such an electrical contact mechanism which can particularly provide a high cleaning effect.

An embodiment of a stereo system to which the present invention is applied will be described below with reference to the drawings.

First, as shown in Figure 1, this stereo can be inserted into, for example, the chest pocket of clothes.
A pocketable tuner (hereinafter simply referred to as tuner) 1 that allows you to listen to received broadcasts through earphones or headphones, and a pair of speakers 2 on the left and right sides.
The stereo system main body (hereinafter simply referred to as the main body) 3 is provided with a stereo system main body (hereinafter simply referred to as the main body). In the center of the front of the cabinet 4 of the main body 3, there is provided a tuner storage section 5 consisting of a recess with two open surfaces, the top and front surfaces, and the tuner 1 can be detachably stored in the tuner storage section 5. It is configured so that it can be done. The tuner 1 is locked and mechanically connected to the main body 3 by an electric contact mechanism (described later) within the tuner housing 5 by a lock part of a pop-up mechanism (described later).
is configured to be electrically connected to. In addition, a power battery is inserted inside tuner 1,
It also has a built-in preamp. A power supply battery is also inserted into the main body 3, and a main amplifier is built-in. Then, change the tuner 1 to the main body 3.
When the tuner 1 is connected to the main body 3, the tuner 1 can be operated using the power supply on the main body 3 side. The top surface of the cabinet 6 of the tuner 1 is provided with a dial operation knob 7, a volume adjustment knob 8, a plug jack 9 that can be used commonly for earphones and headphone, and a power switch switch on the front. A knob 10, a band switching knob 11, etc. are provided. Further, on the upper surface of the cabinet 4 of the main body 3, there are provided a tone adjustment knob 12, a timer set push button 13, a timer reset push button 14, a pop-up push button 15 for the tuner 1, and the like.

Next, the pop-up mechanism will be explained with reference to FIGS. 2 to 6.

First, a pair of guide rails 18 are provided on both left and right side surfaces 17 of the cabinet 6 of the tuner 1 along the center thereof. On the other hand, a pair of guide grooves 19 are provided on both left and right side surfaces 19 in the tuner storage section 5 of the cabinet 4 of the main body 3, and are biased toward the upper end side and for guiding the guide rails 18 along the center portion. ing. In addition, both the left and right sides 1
A pair of sliding plates 2 are located at a position biased toward the lower end of 9.
1 is fitted so as to be able to freely slide upwardly and downwardly, and both of these sliding plates 21 are urged to slide upwardly by coil springs 22, respectively. A pair of guide grooves 23 with closed lower ends 23a are provided in the center of the opposing surfaces of both sliding plates 21 to guide both guide rails 18 and to be brought into contact with lower end surfaces 18a of both guide rails 18. is provided. In addition, a half-clever 26 is rotatably attached to the back of the back plate 25 in the tuner storage section 5 via a fulcrum shaft 27, and a locking pawl 28 provided at the lower end of the half-clever 26 is inserted into the back plate 25 provided on the back plate 25. It is inserted through the hole 29 and projected to the front of the back plate 25. The lock lever 26 is molded from synthetic resin, and is biased to rotate counterclockwise in FIG. 5 by the spring action of a spring action piece 30 that is integrally provided at its upper end and has a substantially inverted L shape. has been done. Further, the pop-up push button 15 is attached to the upper end of a sliding rod 32 provided in the cabinet 4 so as to be able to slide up and down, and the sliding rod 32 and the lock lever 26
There is a conversion lever 3 on the back of the back plate 25 between the
3 is rotatably attached via a fulcrum shaft 34. One end 33a of the conversion lever 33 is brought into contact with the lower end surface of a protrusion 35 provided on the lower end side of the sliding rod 32, and the other end 33b of the conversion lever 33 is placed under the protrusion 36 provided on the back side of the lock lever 26. It is in contact with the end face. The spring acting force of the spring acting piece 30 of the lock lever 26 is transmitted to the sliding rod 32 via the conversion lever 33, thereby pushing the pop-up push button 15 upwardly. Further, an engagement hole 38 for the lock pawl 28 is provided in the back surface 37 of the cabinet 6 of the tuner 1.

According to the pop-up mechanism configured as described above, the tuner 1 is first inserted into the tuner storage section 5 of the main body 3.
When storing the tuner 1 into the tuner storage section 5, insert the tuner 1 into the tuner storage section 5 from above as shown in FIG. At this time, both guide rails 18 are guided by both guide grooves 20, and tuner 1 is correctly inserted vertically. When the tuner 1 is inserted to a certain extent, both guide rails 18 are inserted into both guide grooves 23 of both sliding plates 21 as shown in FIG. 18 is brought into contact with the lower end 23a. With the subsequent insertion of the tuner 1, both sliding plates 21 are pushed down by the tuner 1 against the both helical springs 22, as shown by the imaginary lines in FIG. 1 pop-up power is accumulated. When the tuner 1 is completely inserted into the tuner housing 5 as shown in FIG.
is automatically engaged in the engagement hole 38 of the tuner 1 by the spring action force of the spring action piece 30, and the tuner 1 is locked in that position.

Next, when removing tuner 1 from main body 3,
Push the pop-up push button 15 downward. Then, the sliding rod 32 is pushed down, and the protrusion 35 pushes one end 33a of the conversion lever 33, and the conversion lever 33 is rotated counterclockwise in FIG. The protrusion 36 of the lock lever 26 is pushed by the end 33b, and the lock lever 26 resists the spring action force of the spring action piece 30 and moves to the fifth position.
The lock pawl 28 is removed from the engagement hole 38 of the tuner 1 by being rotated clockwise as shown by the imaginary line in the figure.

As a result, the lock state of tuner 1 is released,
At the next moment, both sliding plates 21 are pushed upward by the pop-up force accumulated in both coiled springs 22, and the tuner 1 is moved upward by the two sliding plates 21 as shown in the imaginary line in FIG. As shown, it is automatically popped up to a predetermined height above the main body 3. Note that after this, the tuner 1 can be easily removed upward from the tuner storage section 5.

Next, the electrical contact mechanism will be explained with reference to FIG. 2 and FIGS. 7 to 11.

First, on the bottom surface 41 of the cabinet 6 of the tuner 1, a large number of wire terminals 42, each made of, for example, a metal wire formed into a substantially U-shape, are attached in a state substantially parallel to each other. Both ends of these wire terminals 42 are respectively inserted into the cabinet 6 and soldered 44 to a printed circuit board 43 incorporated within the cabinet 6. On the other hand, a large number of insertion holes 46 are provided in the bottom plate 45 in the tuner storage section 5 of the main body 3 so as to face the wire terminals 42, respectively, and a large number of insertion holes 46 are provided in the bottom plate 45 in the tuner storage section 5 of the main body 3. The distal end portions 47a of the base plate 47a are inserted through the respective insertion holes 46 and protrude above the bottom plate 45. However, in this case, these plate terminals 47 are made of, for example, a plate spring, and the intermediate part 47b is inclined to the same side as the tip part 47a which is approximately vertical, and the intermediate part 47b is tilted in the same direction as the tip part 47a. The base portion 47c, which is biased laterally, has a substantially U-shaped shape. and these terminals 47
are each soldered 4 to a printed circuit board 47 incorporated in the cabinet 4 by its base 47c.
9 has been done. Each plate terminal 4 is also made of a plate spring.
7 is arranged at a substantially right angle (θ ₁ in FIG. 10) with respect to each wire terminal 42 made of a metal wire, and the tip end 47a of each plate terminal 47 is inserted into each insertion hole 46.
in the longitudinal direction of each wire terminal 42 (9th,
It is configured to be movable in the direction of arrow A in Fig. 10).

According to the electrical contact mechanism configured as above,
As described above, by inserting and locking the tuner 1 into the tuner housing 5, each wire terminal 42 is connected to the tip surface 47d of the tip end 47a of the corresponding plate terminal 47, as shown by the imaginary line in FIG. The tuner 1 and the main body 3 are electrically connected to a predetermined circuit through these terminals 42 and 47, which are crimped and contacted from above at a substantially right angle (θ ₂ in FIG. 9). .

However, as shown in Figures 8 to 11,
After the wire terminal 42 contacts the tip surface 47d of the tip 47a of the plate terminal 47, as the tuner 1 is pressed down, the plate terminal 47 bends around the base 47c as shown by the dotted line against the spring force. At that time, the distal end surface 47d of the distal end portion 47a maintains contact with the wire terminal 42, and the distal end surface 47d of the distal end portion 47a
2 in the direction of the longitudinal arrow A. However, at this time, the tip portion 47a is slid while maintaining the above-described substantially perpendicular state (θ ₁ and θ ₂ in FIGS. 9 and 10) with respect to the wire terminal 42.

As a result, each wire terminal 42 is strongly scratched in the longitudinal direction by the sharp edges 47e and 47f of the distal end surface 47d of the distal end portion 47a of each plate terminal 47. Due to this scratching action, the contact points between the wire terminals 42 and the plate terminals 47 are reliably automatically cleaned, and dirt, dust, oil, and other substances adhering to the contact points are removed from each other. will be automatically scraped off.
Note that this cleaning action is similarly performed when the tuner 1 is removed from the main body 3.

Therefore, according to this electrical contact mechanism, when the tuner 1 is attached to or detached from the main body 3, the contact points of the terminals 42 and 47 are automatically cleaned from each other, and the contact between these terminals 42 and 47 is always maintained. It is possible to maintain a good conduction state.

Although the embodiments of the present invention have been described above, further modifications can be made based on the technical idea of the present invention.

For example, in the embodiment, a tuner and a stereo system body are used as a pair of electronic devices, but the present invention is not limited to these, and other types of electronic devices may be coupled or separated.

Furthermore, the arrangement and shapes of the fixed terminals and movable terminals are not limited to those shown in the embodiments, and various other effective arrangements and shapes can be used.

Further, in the embodiment, a terminal made of a plate spring is used as a movable terminal, but the spring member is not limited to a plate spring, and various other effective spring members can be used.

As described above, the present invention provides a fixed terminal on one of a pair of electronic devices (for example, the pocketable tuner 1 and the stereo system main body 3 in the embodiment) which are configured to be coupled and separated from each other. terminal 42], and the other is provided with a movable terminal (for example, terminal 47 in the embodiment) made of a spring member, and when the above-mentioned high-quality electronic device is connected, the above-mentioned fixed terminal is connected to the above-mentioned movable terminal by the spring action. In an electrical contact mechanism configured to be crimped against force, one of the fixed terminal and the movable terminal is configured as a wire terminal made of wire, and the other is configured as a plate terminal made of plate material. The plate terminal is arranged substantially perpendicular to the longitudinal direction of the wire terminal, and the plate terminal is crimped to the wire terminal at a substantially right angle at its tip surface, When both terminals are crimped, the sharp edges on the tip surfaces of the plate terminals are slid relative to each other in the longitudinal direction of the wire terminals while maintaining the contact state between the terminals, and the wire terminals are pulled in the longitudinal direction by the sharp edges of the plate terminals. Since this is an electrical contact mechanism configured to clean the contact points of both terminals by scratching, each time a pair of electronic devices is connected or separated, the terminals that electrically connect them are mechanically cleaned. In particular, the wire terminal can be strongly scratched in the longitudinal direction by the sharp edge at the tip of the plate terminal.
A very high cleaning effect can be achieved. Therefore, the cleaning action can always reliably scrape off dirt, dust, oil, and other deposits adhering to the contact point portion, and the contact point portion can always be maintained in a good conductive state.

[Brief explanation of the drawing]

The drawings show an embodiment in which the present invention is applied to a stereo system, in which Fig. 1 is an overall perspective view, Fig. 2 is a partially cutaway perspective view of the main part explaining the pop-up mechanism, and Fig. 3 is a perspective view of the main part. The figure is a perspective view showing the relationship between the lock lever and the push button, FIG. 4 is a rear view of the same as above, FIG. Figure 7 is an enlarged cross-sectional view of the main parts to explain the electrical contact mechanism, and Figure 8 is the automatic terminal cleaning of the same as above. Cross-sectional view explaining the operation, No. 9
The figure is an enlarged view of the main part explaining the terminal automatic cleaning operation same as above, Figure 10 is a plan view of same as above, and Figure 11 is
The figure is a cross-sectional view taken along line XI-XI. In addition, in the symbols used in the drawings, 1... pocketable tuner (one electronic device), 3... stereo system body (other electronic device), 42...
Fixed terminal (wire terminal), 47... Movable terminal (plate terminal) 47d... Tip surface, 47e, 47f
...sharp edge, A...longitudinal direction, θ ₁ ... right angle, θ ₂ ... right angle.

Claims (1)

[Claims for Utility Model Registration] Of a pair of electronic devices that are configured to be coupled and separated from each other, one is provided with a fixed terminal and the other is provided with a movable terminal constituted by a spring member. In an electrical contact mechanism configured such that the fixed terminal is crimped to the movable terminal against the spring action force by coupling both electronic devices, one of the fixed terminal and the movable terminal is connected to the movable terminal. The wire terminal is configured as a wire terminal made of a wire rod, and the other is configured as a plate terminal made of a plate material. The plate terminal is configured to be crimped at a substantially right angle with its tip surface, and the shear edge of the tip surface of the plate terminal is relative to the longitudinal direction of the wire terminal while maintaining the contact state of both terminals when crimping the terminals. An electrical contact mechanism constructed so that the wire terminal is slid in the longitudinal direction with the sharp edge of the plate terminal to clean the contact point between the two terminals.