JP2008041357A - Printed circuit board mounting socket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed circuit board mounting socket which is protected so that an unexpected force will not be applied to the tip sides of terminal pins 14 from the outside during the transportation or the like. <P>SOLUTION: In the printed circuit board mounting socket for mounting a printed circuit board in which numerous terminal holes are bored on the socket body 10 where numerous terminal pins 14 are planted and installed, corresponding to the numerous terminal holes by inserting the terminal pins 14 into the terminal holes, respectively, a movable guide plate 30 made of an insulating material into which numerous insertion holes 32 are bored corresponding to the numerous terminal pins 14 are arranged and installed at the socket body 10 freely movably in the axial direction of the terminal pins 14, by inserting the terminal pins 14 into the insertion holes 32 respectively from a position of tight adherence to the socket body 10, up to the position where the tip of the terminal pins 14 is not protruded. Spring coils 40 are installed which elastically energize the movable guide plate 30 in the tip direction of the terminal pins 14. The movable guide plate 30 receives a force from the outside, and the tip of the terminal pins 4 will not be bent. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a printed circuit board mounting socket for mounting a printed circuit board having a large number of terminal holes to a socket body in which a large number of terminal pins are implanted.

  For the purpose of deriving signals from the semiconductor inspection device, a printed circuit board in which a large number of terminal pins are implanted in the socket body provided in the semiconductor inspection device, and a large number of terminal holes are formed corresponding to these terminal pins, There is a printed circuit board mounting socket in which terminal pins are inserted into terminal holes, a printed circuit board is mounted on a socket body, and terminal pins are soldered to lands provided on the circuit board. In such a socket, the number of terminal pins is as many as 400, for example, and the spacing between them is as narrow as 1 mm or less.

An example of a conventional printed circuit board mounting socket will be briefly described with reference to FIGS. FIG. 12 is a longitudinal sectional view of an example of a conventional printed circuit board mounting socket. FIG. 13 is a diagram for explaining a problem that becomes a problem when a printed board is attached. In FIG. 12 and FIG. 13, the number of terminal pins is shown to be significantly smaller than actual. In FIG. 12, a large number of mounting holes 12, 12... Are drilled in a socket body 10 made of an insulating material. Since these mounting holes 12, 12... Are thin and long, the socket body 10 is composed of two laminated members. The terminal pins 14, 14... Are inserted into the mounting holes 12, 12. Further, guide pins 16 and 16 for the printed circuit board 20 are erected on the socket body 10. An example of the prior art in which a large number of terminal pins are inserted into a socket body of this type is described in Japanese Patent Application Laid-Open No. 2002-367748.
JP 2002-367748 A

  In the conventional printed circuit board mounting socket described above, the distal ends of the terminal pins 14, 14. Therefore, if an unexpected force is applied from the outside to the distal end side of the terminal pins 14, 14... During transportation of the printed circuit board mounting socket, the distal end portion may be bent. If even one of the terminal pins 14, 14... Is bent, the guide holes 24, 24 drilled in the printed circuit board 20 are inserted into the guide pins 16, 16 of the socket body 10, as shown in FIG. Even if the printed circuit board 20 is accurately positioned in the socket body 10, the bent tip of the terminal pin 14 is in one of the terminal holes 22, 22. The position does not match, making it impossible to install as a whole.

  The present invention has been made in view of the circumstances of the prior art, and can be attached to a printed circuit board so that an unexpected force is not applied to the front end side of the terminal pin from the outside during transportation or the like. The purpose is to provide a socket for the use.

  In order to achieve this object, a printed circuit board mounting socket according to the present invention is a socket in which a large number of terminal pins are implanted in a printed circuit board having a large number of terminal holes. In a printed circuit board mounting socket for inserting and attaching the terminal pins to the terminal holes, respectively, in the main body, a movable guide plate made of an insulating material having a large number of insertion holes corresponding to the numerous terminal pins. The terminal pins are respectively inserted into the insertion holes, and are arranged on the socket body so as to be movable in the axial direction of the terminal pins from a position where the terminal pins are in close contact with a position where a tip of the terminal pin does not protrude. A spring coil is provided to elastically urge the movable guide plate toward the tip of the terminal pin.

  A spacer that can fix the movable guide plate at a position where the tip of the terminal pin does not protrude may be detachably disposed between the movable guide plate and the socket body.

  Further, a fixing means that can fix the movable guide plate at a position in close contact with the socket body may be provided.

  Further, a floating pin is disposed in a predetermined range with respect to the socket body in parallel with the terminal pin across the movable guide plate and the socket body, and the floating pin is connected to the socket body with respect to the terminal pin. The movable guide plate is restricted to a position where the tip of the terminal pin does not protrude in a state of being biased toward the tip side, and the floating pin is offset to the opposite side to the tip side of the terminal pin with respect to the socket body The movable guide plate can be configured to be fixed at a position in close contact with the socket body.

  Further, the movable guide plate is disposed by the floating pin so as to be movable in the axial direction with respect to the socket body, and the movable guide plate is restricted from moving in the axial direction with respect to the socket body. You may comprise so that it can do.

  In the printed circuit board mounting socket according to claim 1, the movable guide plate is positioned so that the tip of the terminal pin does not protrude so that the movable guide plate receives the unexpected force from the outside. Thus, no force acts on the tip side of each terminal pin. Therefore, the trouble that the front end side of one terminal pin is bent is not caused.

  In the printed circuit board mounting socket according to claim 2, the movable guide plate can be fixed at a position where the tip of the terminal pin does not protrude by the spacer. By fixing the guide plate, there is no problem that the terminal pin is bent.

  The printed circuit board mounting socket according to claim 3, wherein the movable guide plate is brought into close contact with the socket body by the fixing means, so that the terminal pin is inserted into the socket body and the movable guide plate. It can be smoothly inserted from the main body into the movable guide plate.

  Furthermore, in the printed circuit board mounting socket according to claim 4, since the floating pin is disposed so as to be movable within a predetermined range with respect to the socket body across the socket body and the movable guide plate, the position of the floating pin depends on the position of the floating pin. The position of the movable guide plate can be easily regulated with respect to the socket body.

  Further, in the printed circuit board mounting socket according to claim 5, the movable guide plate is movably disposed in the axial direction within a predetermined range with respect to the socket body by the floating pin, and is attached to the socket body. Since movement other than in the axial direction can be restricted, the floating pin can prevent lateral displacement of the movable guide plate with respect to the socket body, and the socket body can receive unexpected force from the outside that acts on the movable guide plate. The terminal pin is not subject to unexpected force from the outside. And it can comprise with few components.

  An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view of an embodiment of a printed circuit board mounting socket according to the present invention. 2 is a cross-sectional view taken along the line AA in FIG. 3 is a cross-sectional view taken along the line BB in FIG. FIG. 4 is a diagram showing an initial procedure for attaching the printed circuit board to the printed circuit board mounting socket of the present invention. FIG. 5 is a diagram showing a second procedure for attaching the printed circuit board. FIG. 6 is a diagram showing a third procedure for attaching the printed circuit board. FIG. 7 is a diagram showing a final procedure for attaching the printed circuit board. FIG. 8 is a diagram for explaining the work of inserting and arranging the terminal pins on the socket body and the movable guide plate. FIG. 9 is a plan view in which the printed circuit board mounting socket of the present invention is set in a state suitable for transportation and the like. 10 is a cross-sectional view taken along the line CC of FIG. FIG. 11 is a diagram illustrating an operation for removing a member that is set to a state suitable for conveyance and setting the state to be used. 1 to 11, members that are the same as or equivalent to those shown in FIGS. 12 and 13 are assigned the same reference numerals, and duplicate descriptions are omitted.

  First, the structure of an embodiment of a printed circuit board mounting socket according to the present invention will be described with reference to FIGS. A number of mounting holes 12, 12... Are formed in the socket body 10 made of an insulating material, and terminal pins 14, 14... Are inserted into the mounting holes 12, 12. Further, the guide pins 16 and 16 are erected on the socket body 10 as in the conventional example shown in FIGS. However, the axial direction of the terminal pin 14 is within a range from the position where the movable guide plate 30 made of an insulating material is brought into close contact with the tip of the terminal pins 14, 14. It is arrange | positioned so that a movement is possible in parallel with. The movable guide plate 30 is provided with a large number of insertion holes 32, 32, corresponding to the terminal pins 14, 14,. And the front end side of terminal pin 14, 14 ... is penetrated by these insertion holes 32, 32 .... The socket body 10 is provided with a recess 18 that can accommodate the movable guide plate 30. When the movable guide plate 30 is accommodated in the recess 18, the terminal pins 14 of the socket body 10 are similar to the conventional example. A flat surface on which the printed circuit board 20 can be in close contact is formed on the surface of the front end side. Further, spring coils 40, 40... Are contracted between the socket body 10 and the movable guide plate 30 to elastically bias the movable guide plate 30 in a direction away from the socket body 10. Further, the floating pins 50, 50... Are disposed across the socket body 10 and the movable guide plate 30 in parallel with the axial direction of the terminal pins 14, and are predetermined in a direction parallel to the terminal pins 14 with respect to the socket body 10. It can be moved within the range. In a state where the movable guide plate 30 is offset from the socket body 10 due to the elasticity of the spring coils 40, 40..., The tip portions of the terminal pins 14, 14. It is assumed that there is a certain state. The adjustment of the position in a state of being offset from the socket body 10 is appropriately performed by adjusting screws 52, 52... Screwed to the floating pins 50, 50. Further, the floating pins 50 and 50 are configured so that the movable guide plate 30 is restricted from moving with respect to the socket body 10 except for the axial direction of the terminal pins 14, 14. ing.

  With the structure of the socket for mounting a printed circuit board according to the present invention shown in FIGS. 1 to 3, when the movable guide plate 30 is separated from the socket body 10, the movable guide plate 30 protects the distal ends of the terminal pins 14, 14. Even if an unexpected force from the outside is applied to the movable guide plate 30, the force does not act on the tip portions of the individual terminal pins 14, 14. There is no risk that only one tip is bent. Moreover, the movable guide plate 30 is positioned with respect to the socket body 10 by the floating pins 50, 50..., And the force in the direction of bending the terminal pins 14, 14. This prevents the movable guide plate 30 from being displaced from the socket body 10.

  The operation of attaching the printed circuit board 20 to the printed circuit board mounting socket of the present invention having such a configuration will be described with reference to FIGS. First, as shown in FIG. 4, the guide pins 16 and 16 of the socket body 10 are fitted into the guide holes 24 and 24 of the printed circuit board 20, and the printed circuit board 20 is positioned with respect to the socket body 10. Then, as shown in FIG. 5, the printed circuit board 20 is moved to the socket body 10 side so as to be in contact with the movable guide plate 30. In such a state, the terminal holes 22 of the printed circuit board 20 correspond to the insertion holes 32 of the movable guide plate 30, and the positions thereof coincide with each other. Further, as shown in FIG. 6, the movable guide plate 30 and the printed circuit board 20 are pushed into the socket body 10 side against the elasticity of the spring coils 40, 40... 10 is in a state where the tips of the terminal pins 14, 14... Protrude from the printed circuit board 20. When the state of FIG. 5 is shifted to the state of FIG. 6, the terminal holes 14, 22... Of the printed circuit board 20 are aligned with the insertion holes 32, 32. 14... Can be smoothly transferred from the movable guide plate 30 side to the printed circuit board 20 side. Then, the tips of the terminal pins 14, 14... Protruding from the printed board 20 are appropriately soldered to lands (not shown) provided on the printed board 20. Further, as shown in FIG. 7, the floating pins 50, 50... Are fixed to the socket body 10 by fixing screws 54, 54. .

  When the terminal pins 14, 14,... Are inserted and disposed in the socket body 10 and the movable guide plate 30, the floating pins 50, 50,. The movable guide plate 30 is in close contact with the socket body 10, and the insertion holes 32, 32,... Of the movable guide plate 30 are aligned with the mounting holes 12, 12,. The pins 14, 14 ... are inserted. The mounting holes 12, 12... And the insertion holes 32, 32... Are continuous, and the tips of the terminal pins 14, 14... Are inserted from the mounting holes 12, 12. It is possible to make a smooth transition to…. The inner diameters of the insertion holes 32, 32... Of the movable guide plate 30 are set to be the same as or slightly larger than the inner diameters of the mounting holes 12, 12. It is set to be the same as or slightly smaller than the inner diameter.

  As described above, by providing the movable guide plate 30 in the printed circuit board mounting socket of the present invention, the tip portions of the terminal pins 14, 14... Are not bent, but the elasticity of the spring coils 40, 40 is being conveyed. In contrast, if the movable guide plate 30 moves to the socket body 10 side and the tips of the terminal pins 14, 14... Protrude, the force of the terminals 14, 14. There is a risk that the tip may be bent. Therefore, it is desirable that the movable guide plate 30 can be set so as not to move to the socket body 10 side during conveyance. A technique for fixing the movable guide plate 30 at a position away from the socket body 10 will be described with reference to FIGS. 9 and 11.

  In FIGS. 9 and 11, during transportation, the spacers 60, 60 are interposed between the socket body 10 and the movable guide plate 30 with spacer mounting screws 62, 62 in a state where the movable guide plate 30 is separated from the socket body 10. It is fixed with. In use, as shown in FIG. 11, the spacer mounting screws 62, 62 may be removed and the spacers 60, 60 may be removed from between the socket body 10 and the movable guide plate 30.

  In the above embodiment, the floating guides 50, 50... Allow the movable guide plate 30 to move in a predetermined range in the axial direction with respect to the socket body 10 and restricts movement in a direction other than the axial direction. However, the present invention is not limited to this structure, and a member that makes the movable guide plate 30 movable in a predetermined range in the axial direction and a member that restricts lateral movement other than the axial direction may be provided separately.

It is a top view of one Example of the socket for printed circuit board attachment of this invention. It is an AA cross-sectional arrow view of FIG. It is a BB cross-sectional arrow view of FIG. It is a figure which shows the first procedure of attaching a printed circuit board to the printed circuit board attachment socket of this invention. It is a figure which shows the 2nd procedure which attaches a printed circuit board. It is a figure which shows the 3rd procedure which attaches a printed circuit board. It is a figure which shows the last procedure which attaches a printed circuit board. It is a figure explaining the operation | work which inserts and arrange | positions a terminal pin to a socket main body and a movable guide plate. It is the top view which set the socket for printed circuit board attachment of this invention in the state suitable for conveyance. It is CC sectional view taken on the line of FIG. It is a figure explaining the operation | work which removes the member set to the state suitable for conveyance etc., and sets to the state to use. It is a longitudinal cross-sectional view of an example of the conventional socket for printed circuit board attachment. It is a figure for demonstrating the problem which becomes a malfunction when attaching a printed circuit board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Socket main body 12 Mounting hole 14 Terminal pin 16 Guide pin 18 Recessed part 20 Printed circuit board 22 Terminal hole 24 Guide hole 30 Movable guide plate 32 Insertion hole 40 Spring coil 50 Floating pin 52 Adjustment screw 54 Fixing screw 60 Spacer 62 Spacer attachment Screw

Claims (5)

A printed circuit board in which a large number of terminal holes are formed is attached to a socket body in which a large number of terminal pins are implanted corresponding to the large number of terminal holes by inserting the terminal pins into the terminal holes, respectively. In the board mounting socket, a movable guide plate made of an insulating material having a plurality of insertion holes corresponding to the plurality of terminal pins is inserted into the insertion holes, and the socket body is inserted into the socket body. A spring that is disposed in the socket body so as to be movable in the axial direction of the terminal pin from a position close to the terminal to a position where the tip of the terminal pin does not protrude, and elastically biases the movable guide plate in the tip direction of the terminal pin A printed circuit board mounting socket comprising a coil. 2. The printed circuit board mounting socket according to claim 1, wherein a spacer capable of fixing the movable guide plate at a position where a tip of the terminal pin does not protrude is detachably disposed between the movable guide plate and the socket body. A printed circuit board mounting socket characterized by comprising 2. The printed circuit board mounting socket according to claim 1, further comprising fixing means capable of fixing the movable guide plate at a position in close contact with the socket body. 2. The printed circuit board mounting socket according to claim 1, wherein a floating pin is disposed in parallel with the terminal pin across the movable guide plate and the socket body so as to be movable within a predetermined range with respect to the socket body. The movable guide plate is restricted to a position where the tip of the terminal pin does not protrude while being biased toward the tip side of the terminal pin with respect to the socket body, and the floating pin is A printed circuit board mounting socket characterized in that the movable guide plate can be fixed at a position in close contact with the socket body in a state of being biased to the side opposite to the tip side. 5. The printed circuit board mounting socket according to claim 4, wherein the movable guide plate is movably disposed in the axial direction with respect to the socket body by the floating pin, and the movable guide plate is moved with respect to the socket body. The printed circuit board mounting socket is configured so that movement in a direction other than the axial direction can be restricted.