JP4275197B2 - socket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a socket through mounting of electrical related mechanical parts.
[0002]
[Prior art]
Today's mounting of electronic components is mostly automated by using a wave soldering tank (hereinafter referred to as “automatic soldering”) from the viewpoint of reducing man-hours and productivity. In the case of mechanical elements having mechanical structures that are inferior to semiconductor elements and electronic parts, an operator must perform soldering after undergoing an automatic soldering process for rough electronic parts in order to avoid problems caused by heat of those elements. Soldering is performed manually with a scissors (hereinafter referred to as “hand solder”), and dedicated sockets are automatically used for mounting expensive semiconductor elements such as LSI (large scale integration) and relays with high replacement frequency. It was customary to mount with solder and mount in a later process.
[0003]
[Problems to be solved by the invention]
However, there is no mechanism component, that is, a switch or a variable variable element (variable resistor, variable capacitor, etc.) that can be combined with a socket that can withstand an automatic soldering process, except for a relay, and it can only rely on manual soldering. Even if there is a structure in which automatic soldering itself is impossible, even if it is in a dedicated socket for mechanical parts such as semiconductor elements and relays, the terminal of the socket that contacts the terminal of the mechanical part in the flux application process in the automatic soldering process The flux adhered to the surface, which was a cause of problems due to poor contact between the terminals.
[0004]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a socket for a mechanical component and a mechanical component as means for enduring an automatic soldering process and maintaining a suitable operation.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the socket according to the present invention includes a socket body made of an insulating material provided with a support hole in which a mechanical component body containing an electric circuit can be loaded in a fixed direction, and is external to the mechanical component body. Attach a pressure contact terminal that elastically contacts the terminal and a connection terminal that extends from each pressure contact terminal and is fixed to the circuit pattern of the circuit board by soldering, and a stopper for preventing slippage that fits on the circuit board. It is characterized by a pair of protrusions sandwiched therebetween.
[0006]
In some cases, a covering piece that refracts downward when the mechanical component main body is mounted extends from the lower portion of the socket main body below the press contact terminal so as to cover at least a part of the support hole.
[0007]
Further, a mechanical component according to the present invention, which has been made to solve the above-mentioned problems, is configured by mounting a mechanical component main body containing an electric circuit in the support hole of the socket in a non-rotatable manner. It is characterized by comprising operating means for urging changes in the operating state of the circuit, external terminals connected to the electric circuit and contacting the pressure contact terminals of the socket, and latching means for preventing separation from the circuit board. To do.
[0008]
The included electric circuit may include a variable resistance circuit including a resistor and a slider in contact with the resistor, or may include a contact that opens and closes by operation of the operation means.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described by taking as an example a mechanism component for an operation panel that is a combination of the mechanism component main body 2 and the socket 16.
[0010]
FIG. 1 shows an embodiment of the mechanism component main body 2. This mechanical component body 2 includes a resistance box 20 including a variable resistance circuit including a resistor 21 and a slider 22 in contact with the resistor 21 and a switch box including a switch circuit including contacts 31 and 31 and a contact opening / closing member 32 from the front. 30 is connected to the resistance box 20 and the switch box 30 with a rivet 41 and a bottomed cylindrical cylinder portion 40 having a hollow portion for accommodating a biasing member and earning a stroke of the operation rod. The operation rod 15 is configured to support the slider 22 and the contact opening / closing member 32 so that the slider 22 and the contact opening / closing member 32 are not pivotable with respect to the slider 22 and the contact opening / closing member 32. It is provided. The operating bar 15 is projected and retracted in such a manner that the pressed operating bar 15 is locked in a state where it is immersed in the mechanical component main body 2 and the operating bar 15 is pushed again to release the lock. Hereinafter, this is referred to as a push-lock type operating rod 15.
[0011]
The slider 22 of the variable resistance circuit is always in contact with the resistor 21 regardless of whether the operating rod 15 appears or disappears, and the slider 22 moves on the resistor 21 by rotating the operating rod 15. . Further, the contact opening / closing member 32 always rotates according to the operation bar 15 regardless of the operation bar 15 and is turned counterclockwise until it reaches the limit, so that the contacts 31 and 31 in the switch box 30 are accompanied with a click feeling. At the same time, the slider 22 reaches the end of the resistor 21. As described above, the operation bar 15 appears and disappears in this embodiment mainly due to design considerations such that the operation knob of the electric device is always stored below the surface of the operation panel 17 as shown in FIG. .
[0012]
The front edge of the resistance box 20 protrudes sideways and is formed as a front support portion 42 that supports the front surface of the circuit board 8 to be mounted, and key portions 43 and 43 that indicate the mounting direction on a pair of opposite sides. Is provided. In addition, a rectangular frame-shaped support ring 44 made of, for example, metal is interposed between the resistance box 20 and the switch box 30, and the side of the support ring 44 on which the key portions 43 and 43 are formed. Rear support portions 45, 45 for supporting the circuit board 8 to be mounted from the rear are integrally extended from the outer edge facing the surface. Each of the rear support portions 45, 45 bends the strip extending from the outer edge of the support ring 44 toward the front from each base portion, and the separation length between the side surface of the mechanical component main body 2 and the strip goes forward. The tip of the strip is bent toward the side surface of the mechanical component main body 2. In the mechanical component body 2, the front support part 42 and the rear support part 45 form a body as a latching means for preventing the circuit board 8 from being detached.
[0013]
Among the side surfaces of the mechanical component main body 2 where the rear support portion 45 does not exist, one side surface includes both ends of the resistor 21 of the variable resistance circuit and the external terminals 4 drawn from the slider 22 to the side surface of the resistance box 20. 4, 4 are arranged side by side along one piece of the front support portion 42 in a state of being bent forward at their base portions, and the other side of the switch box 30 is connected to both terminals of the contacts 31, 31 on the other side surface. Each of the external terminals 5 and 5 drawn out to the side surface is provided in parallel along one piece of the front support portion 42 in a state where the external terminals 5 and 5 are bent forward at the base portion thereof, and these are arranged on the circuit board via the socket 16. 8 is connected to the circuit pattern 9.
[0014]
In the case of this mechanical component, the variable resistance circuit and the switch circuit are not electrically connected, and a desired circuit may be configured by appropriately connecting the external terminals 4, 4, 4, 5, and 5. Further, it is also possible to configure the mechanism component body 2 that functions as a simple variable resistor as shown in FIG. 7 simply by removing the switch box 30 from the above configuration (see FIG. 6) and using the short operation rod 15.
[0015]
The socket 16 shown in FIG. 1 shows an embodiment of the socket according to the present invention. The socket 16 is formed of a rectangular frame-shaped socket body 1 having a support hole 3 into which the front end portion of the mechanical component body 2 is fitted using an insulating synthetic resin, and the socket body 1 is formed in the molding process. Are connected to the external terminals 4 and 5 of the mechanical component body 2 on the two opposite sides thereof, and are electrically connected to the press contact terminals 6 and 7 and soldered to the circuit pattern 9 of the circuit board 8. The connecting terminals 10 and 11 to be fixed are arranged as a pair. The pair of press contact terminals 6 and 7 and the connection terminals 10 and 11 are integrally formed of a conductive metal as a raw material, and each penetrates from the support hole 3 side to the side of the socket 16 at the front part of the two sides of the socket body 1. In addition, the socket body 1 is supported in a state where an intermediate portion as a conductive portion is inserted. The press contact terminals 6 and 7 are bent backward so that the external terminals 5 and 6 disposed on the side of the mechanical component body 2 can be elastically received, while the connection terminals 10 and 11 are The socket body 1 faces the side and is bent rearward, and its tip is shaped like a pin so that it can be inserted into the through hole of the circuit board 8.
[0016]
Further, the socket body 1 is provided with main stoppers 12 and 12 projecting downward from the diagonal of the back surface, and sub-stoppers 13 and 13 projecting from the back surfaces of the two opposite sides. And we are sure of preventing vertical and horizontal shifts. The socket body 1 is further provided with covering pieces 14 and 14 that extend from the lower inner edge of the side where the terminals 6, 7, 10, and 11 are provided along the opening surface and respectively cover almost half of the support hole 3. On the front inner edge of the socket body 1, the key parts 43, 43 of the mechanism component body 2 are fitted so as to face the support hole 3 so as not to be fitted in a different direction when the mechanism component body 2 is mounted. The notches 46 and 46 are provided at positions deviated from the centers of both sides.
[0017]
In the case of a mechanical component that is a combination of the mechanical component main body 2 and the socket 16, first, only the socket 16 is mounted on the circuit board 8, and automatic soldering is performed. Since the socket 16 is provided with the covering piece 14, the flux 48 adheres to the pressure contact terminals 6 and 7 of the socket 16 even when the flux 48 is applied as a pre-process to pass through the wave solder tank as shown in FIG. 9. As a result of the main stopper 12 and the sub-stopper 13 being provided as described above in addition to the connection terminals 10 being inserted into the through-holes of the circuit board 8, as a result of shaking during transfer and jets in the wave solder tank, There is no fear that the mounting position of the socket 16 is shifted before soldering. In addition, if, for example, a hook-shaped hooking portion 18 (see FIG. 1) that is hooked on the back surface of the circuit board by mounting is formed at the tip of the main stopper 12 or the sub-stopper 13, the vertical displacement of the socket 16 is prevented. It is suppressed and the fixation to the circuit board 8 can be made more reliable.
[0018]
The mechanical component body 2 is fitted into the socket 16 as shown in FIG. Therefore, even in the mechanical component main body 2 mainly made of synthetic resin, there is no possibility of being deformed in a thermal atmosphere in the automatic soldering process or causing a functional failure. It is extremely easy, and as a result of sandwiching the front and back surfaces of the circuit board 8 between the front support part 42 and the rear support part 45 even after mounting, there is no fear that the mechanical component 2 itself is detached during operation. A mounting hole 47 into which the stoppers 12 and 13 of the socket 16 and the mechanism component main body 2 can be inserted is provided in advance at the mounting position of the socket 16 on the circuit board 8, but the rotation and displacement of the mechanism components are more reliably suppressed. For this purpose, it is desirable to provide a mounting hole 47 having a shape substantially equal to the upper cross section of the mechanical component body 2.
[0019]
The covering piece 14 is bent downward as shown in FIG. 8 along with the insertion of the mechanical component main body 2 into the support hole 3, and the support hole 3 is fully opened. If, for example, a polyamide-based resin, such as a polyamide resin, that is difficult to break is selected as the material of the socket body 1 that is integral with the covering piece 14, the covering piece 14 breaks off from the base even when the mechanical component body 2 is mounted. Never do.
[0020]
Conventionally, a relatively large mechanical component having an operation rod or an operation means capable of holding the operation rod regardless of whether or not it is a push-lock type is mounted in a state of being laid down on a circuit board, or an electric device. However, in the former case, it is necessary to erect a circuit board with respect to the operation panel. For example, an LED (light-emitting diode) or the like is required. In addition to the need for a separate circuit board for fixing the display element, etc., the internal space of the electrical equipment is often partitioned by the circuit board, which hinders the layout of the internal space. There have been problems such as the necessity of wiring using lead wires and connectors from the external electrodes of the main body to the circuit board.
[0021]
On the other hand, since the mechanical component 2 according to the present invention can be fixed in a standing state with respect to the circuit board 8 as shown in FIG. 4, the circuit board 8 can be fixed almost in parallel with the operation panel 17, and In addition to effectively using the internal space, the display element 49 and the mechanical component 50 can be arranged in parallel on the common circuit board 8. When the mechanical component 50 is erected on the circuit board 8 fixed in parallel with the operation panel 17 in this way, a light leakage prevention material (rubber or the like) 19 is attached between the front surface of the variable resistor and the operation panel 17. It is possible to intervene easily with close contact. In addition, in the mechanical parts mounted in the above-described lying state, the light leakage preventive material is in an extremely unstable contact state, so that light may leak from the gap of the hole where the mechanical parts of the operation panel are exposed. There were many.
[0022]
The above is one example of the present invention, and the mechanical parts to be selected may be, for example, a toggle switch, a push switch, a rotary switch, or a push button. Further, the structure of the mechanical component main body 2 and the socket 16 is not limited to the above structure, and the number of the connection terminals 10 and 11 and the pressure contact terminals 6 and 7 of the socket 16 can be appropriately changed. Sometimes, as shown in FIG. 16 may be provided with a ground terminal 51 for connection from the conductive portion of the chassis of the mechanical component body 2 to the ground of the circuit board 8.
[0023]
On the other hand, considering the fixing strength with the circuit board 8, the connection terminals 10 and 11 of the socket 16 have a shape that can be inserted into the through holes of the circuit board 8, and the stoppers 12 and 13 as reinforcing members are provided at the four corners. Desirably, the covering piece 14 should be provided as much as possible in order to ensure prevention of adhesion of flux. At this time, the position where the covering piece 14 is provided is a position that does not hinder the rear support portion 45 of the mechanical component body 2 from being hooked to the circuit board 8 and is below the press contact terminals 6 and 7 of the socket 16. It is essential. That is, the press contact terminals 6 and 7 and the covering piece 14 of the socket 16 are provided at locations where the external terminals 4 and 5 of the mechanical component main body 2 are accommodated, the rear support portion of the mechanical component main body 2 is 45, and the region where the covering piece 14 is bent is provided. The principle is to avoid it.
[0024]
For example, when the external electrode of the mechanical component body 2 is provided facing rearward and is crimped to the press contact terminal from the front to the rear, the press contact terminal should be present upward on the front surface of the socket 16. Therefore, the possibility of flux adhering to the surface of the pressure contact terminal is naturally reduced, and the possibility is further reduced by increasing the thickness of the socket 16 to increase the distance from the circuit board surface. Become. Thus, by devising how to provide the pressure contact terminals of the socket 16, it may not be necessary to provide the covering piece 14 for preventing the adhesion of flux.
[0025]
【The invention's effect】
With Luso packet by the above as the present invention, since only the socket passes through the wave solder bath, mechanical parts heat with trouble can be avoided by the body, for strong support of the socket and mechanism component body to the circuit board In addition, even in a rough operation, the communication board and the circuit pattern are not damaged. Also , if the socket of the present invention is used, even if a wave solder tank with a heavy jet is used, the frequency of occurrence of poor contact with the external terminals of the mechanical component main body due to the adhesion of flux to the surface of the pressure contact terminals can be drastically reduced. it can.
[0026]
Furthermore, according to the present invention, the machine構部products to be able to mount combined to a circuit board including a display device and other circuits, so can only be easily removed can body, when incorporating a circuit board or the like to the chassis In addition, it can greatly reduce the man-hours required for adjustment before shipping as a product. Furthermore, mechanical parts that could not be connected to the circuit board by automatic soldering in the past have been fitted in the subsequent process. Since it can produce the same result as automatic mounting, it can greatly reduce the cost.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an example of a socket and a mechanical component according to the present invention.
FIG. 2 is a perspective view showing an example of how the socket and mechanism parts are attached according to the present invention.
FIG. 3 is a block diagram showing a circuit configuration example inside a mechanical component main body.
FIG. 4 is a cross-sectional view showing an example of how the socket and mechanism parts are attached according to the present invention.
FIG. 5 is a plan view showing an example of a socket according to the present invention.
FIG. 6 is a side view showing an example of a mechanical component body according to the present invention.
FIG. 7 is a side view showing an example of a mechanical component body according to the present invention.
FIG. 8 is a cross-sectional view showing an open / close state of a covering piece in a socket according to the present invention.
FIG. 9 is a cross-sectional view showing the action of the covering piece in the socket according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Socket main body 2 Mechanical component main body 3 Support hole 4,5 External terminal 6,7 Pressure contact terminal 8 Circuit board 9 Circuit pattern 10,11 Contact terminal 14 Covering piece 16 Socket 21 Resistor 22 Slider 31 Contact

Claims (1)

A rectangular frame made of an insulating material provided with a support hole (3) in which a mechanical component main body (2) including external terminals (4, 5) can be loaded in a fixed direction on two opposing side surfaces containing an electric circuit. and Jo of the socket body (1), provided on the two opposing sides of the support hole (3) of said socket body (1), said resilient to external terminals (4,5) of said mechanism part body (2) Pressure contact terminals (6, 7) which are in contact with each other, and connection terminals (10, 11) which are electrically connected to the respective pressure contact terminals (6, 7) and soldered to the circuit pattern (9) of the circuit board (8). ), At least a pair of displacement prevention stoppers (12, 13) that are provided on the socket body (1) and fit into the circuit board (8), and socket bodies (6, 7) provided with the press contact terminals (6, 7) 1) From the lower inner edge of the two sides along the opening surface of the support hole (3) Said support hole (3) provided integrally with the socket body in a state where a cover extending respectively along the mechanical components and refracted through downward by the mounting of the body (2) and the external terminal (4, 5) A socket characterized by comprising two covering pieces (14, 14) extending in the direction .

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