JP4528754B2 - Substrate insertion / extraction tool - Google Patents

Description

  The present invention relates to a board insertion / extraction tool used when a board on which various electrical components are mounted is inserted / extracted at a predetermined position inside a control panel or the like.

Patent Document 1 has a finger hooking portion, a pressing portion, and a supporting portion. The supporting portion is swingably supported by a corner portion of the substrate. When a force is applied to the finger hanging portion, the pressing portion is mounted on the substrate. A substrate puller that can be pressed against a portion and pulled out of the substrate mounting portion, and a plurality of support portions are provided along the swing axis, so that a plurality of substrates can be simultaneously removed from the substrate mounting portion. A substrate puller that allows pulling out is disclosed.
JP-A-8-250876 (Claim 1, paragraph 0037, FIG. 8)

  According to the substrate pulling tool of Patent Document 1, since two printed boards can be simultaneously mounted on and detached from the board mounting portion, jumper wires and spacers are obtained by pulling out the two printed boards separately at the time of removal. Destruction of the printed circuit board accompanying it can be prevented.

  However, even if the substrate pulling tool disclosed in Patent Document 1 is used, there is a possibility that the substrate is pulled out by mistake and an unexpected trouble is caused. Moreover, there is a possibility that the inserted substrate may be loosened due to vibration or the like.

  SUMMARY OF THE INVENTION In order to solve such problems of the prior art, it is an object of the present invention to provide a substrate insertion / extraction tool that can prevent loosening of a substrate, can easily perform the mounting operation, and can reduce extraction of the substrate due to erroneous operation. And

  The present invention for solving the above-described problems includes a fixing member fixed to a substrate, and a lever member that is pivotably attached to the fixing member via a rotation shaft, and is used for insertion / extraction of a substrate. Assuming

The feature of the first invention in this premise is that the lever member includes a screw that crosses the extending direction and can be advanced and retracted in a direction toward the fixing member, and the fixing member has a screwing hole in which a screw groove is formed. The nut member is arranged at a position where the screw can enter, and the nut member is divided into two in a direction parallel to the axis of the screw fixing hole, and the screw fixing hole is contracted by a torsion coil spring sandwiched between them. The spring is biased in the radial direction and connected by a connecting pin extending in a direction perpendicular to the axis of the screwing hole, and the connecting pin is attached to the fixing member in the accommodation hole formed in the fixing member, In this state, the lever member can be screwed to the fixing member by pressing the screw to enter the screwing hole.
The feature of the second invention in this premise is that the lever member is provided with a screw that can advance and retreat in a direction crossing the extending direction toward the fixing member, and the fixing member has a screwing hole in which a screw groove is formed. The nut member is arranged at a position where the screw can enter, the screw fixing hole is spring-biased and the hole diameter is variable, and the screw is provided with a protrusion for regulating the depth of entry into the nut member. In the inserted state, the screw can be pressed to enter the screwing hole so that the lever member can be screwed to the fixing member.
The feature of the third invention in this premise is that the lever member is provided with a screw that can advance and retreat in a direction crossing the extending direction toward the fixing member, and the fixing member has a screwing hole in which a screw groove is formed. The nut member having the screw is disposed at a position where the screw can enter, the screw fixing hole is spring-biased and the hole diameter is variable, and includes a spring biasing means for biasing the screw in a direction away from the lever member, In this state, the lever can be screwed to the fixing member by pressing the screw to enter the screwing hole.

  In one embodiment of the present invention, when the board is inserted, the screw is inserted into a screw insertion hole that penetrates the lever member in a direction toward the fixing member, and the screw fixing hole of the nut member has an axis thereof. It is provided so as to be arranged on the same axis as the axis of the screw insertion hole.

In another embodiment, the nut member is divided into a plurality of parts in a direction parallel to the axis of the screwing hole, and is spring-biased in a direction in which the screwing hole is reduced in diameter. a possible expanded against the energized, is attached to yield capacity hole.

  In another embodiment, an introduction portion whose diameter increases in the direction opposite to the screw entry direction is formed on the entrance side where the screw enters the screw fixing hole.

  The board insertion / extraction tool of the present invention includes a screw that can advance and retreat in a direction toward the fixing member so as to intersect the extending direction of the lever member, and the fixing member includes a nut member that is formed with a screw groove and has a screwing hole. Since the screw hole is spring-biased and the hole diameter is variable, the lever member is screwed into the fixed member by attaching the board to the control panel and pushing the screw into the nut member. Can be stopped. That is, the lever member can be screwed to the fixing member by an easy operation to prevent the board from loosening.

  Further, since the lever member is screwed to the fixing member, when pulling out the substrate, it is essential for the operator to bring the screwdriver and loosen the screw. That is, the work of pulling out the substrate is made redundant, and the operator can have an opportunity to reconfirm the work contents. As a result, the probability of the operator performing an erroneous operation can be reduced.

A substrate insertion / extraction tool according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the board insertion / extraction tool 1, and shows a state before the board B to which two board insertion / extraction tools 1 are attached is set on the sub-rack 20 such as a control panel and inserted. The fixing member 2 of the substrate insertion / extraction tool 1 is fixed to a corner portion of the side edge 21 of the substrate B, and a lever member 4 is attached to the fixing member 2 via a rotary shaft 3 so as to be rotatable. A screw 5 is inserted into the lever member 4 through a screw insertion hole 9 formed in a direction intersecting the lever member 4 so as to be able to advance and retract.

  Further, the fixing member 2 is spring-biased so that the diameter of the hole is variable, and a nut member 8 having a screwing hole 7 in which a screw groove (not shown in FIG. 1) is formed can enter the screw 5. It is arranged at various positions. The fixing member 2 is attached to the side edge 21 of the substrate B. The lever member 4 is provided so as to be substantially parallel to the side edge 21 when the substrate B is inserted. The approach direction of the screw 5 is a direction substantially orthogonal to the side edge 21 of the substrate B.

  The screw 5 is provided with a protrusion 14 that regulates the depth of entry of the screw 5 into the nut member 8. A coil spring 22, which is a spring urging unit that urges the screw 5 in a direction away from the lever member 4, is sandwiched between the protrusion 14 and the lever member 4. By this spring urging means, the tip 23 of the screw can be protruded toward the screwing hole 7 of the fixing member 2. When the screw tip 23 is pushed against the coil spring 22, the screw head 24 protrudes from the lever member 4.

  Further, the lever member 4 is formed with a first claw portion 26 and a second claw portion 27 that can come into contact with the mounting bracket 25 of the sub-rack 20, and by turning the lever member 4 to act as a lever. The substrate B can be inserted and extracted.

  The fixing member 2 is formed with an accommodation hole 10 for accommodating the nut member 8. The nut member 8 is divided into two in a direction parallel to the axis N of the screwing hole 7, and a torsion coil spring 11 is sandwiched between the nut member 8 and connected by a connecting pin 12. The nut member 8 has a screwing hole 7, and the screwing hole 7 is urged by a torsion coil spring 11 in a direction in which the diameter is reduced. Furthermore, an introduction portion 13 is formed on the entrance side of the screw fixing hole 7 where the screw 5 enters, and the diameter of the introduction portion 13 increases in the direction opposite to the direction in which the screw 5 enters.

  The nut member 8 and the torsion coil spring 11 divided into two parts are accommodated in the accommodation hole 10. Further, the nut member 8 and the torsion coil spring 11 press the connection pin 12 into the mounting hole 28 provided in the accommodation hole 10, and further pass the connection pin 12 through the coil portion of the coil spring 11 and the nut member 8 to fix the fixing member 2. Is attached.

  With reference to FIG. 2 (a)-(c), the insertion process of the board | substrate B by the board | substrate insertion / extraction tool 1 is demonstrated. 2A shows the state before insertion of the substrate B, FIG. 2B shows the state during insertion, and FIG. 2C shows the state when the substrate B is inserted. The lever member 4 is shown broken.

  As shown in FIGS. 2A and 2C, the screw insertion hole 9 of the lever member 4 has the lever member 4 in a direction toward the fixing member 2 when the substrate B is inserted (FIG. 2C). Further, when the board B is inserted, the screw insertion holes 9 and the axis M, N of the screwing hole 7 are formed to coincide with each other. In addition, the axis N of the screwing hole 7 and the direction in which the screw 5 enters substantially coincide.

  When the lever member 4 is turned in the direction of the arrow X, the second claw portion 27 comes into contact with the mounting bracket 25 instead of the first claw portion 26 (FIG. 2B), and when the lever member 4 is further turned, the substrate B Is inserted (FIG. 2 (c)). In this insertion process, the tip 23 of the screw protruding from the lever member 4 draws a turning track and approaches the screwing hole 7 of the nut member 8, and the entrance side of the screwing hole 7 as shown in FIG. To touch.

  When the lever member 4 is further swung from the state of FIG. 2B and the screw head 24 protrudes from the lever member 4 as shown in FIG. 2C, when the screw head 24 is pressed toward the fixing member 2, As will be described below, the screw 5 enters the screwing hole 7 and the lever member 4 is screwed to the fixing member 2.

A process in which the screw 5 enters the nut member 8 will be described with reference to FIGS. 3A to 3C in which the screw 5 and the nut member 8 on the right side in FIG. 2C are enlarged.
As shown in FIG. 3A, the nut member 8 is attached to the receiving hole 10 formed in the fixing member 2 in a direction substantially parallel to the axis N of the screwing hole 7 by the connecting pin 12. The nut member 8 is divided into two in a direction parallel to the axis N of the screwing hole 7 and is urged by a torsion coil spring 11 in a direction in which the screwing hole 7 is reduced in diameter.

  The nut member 8 is rotatable around the connecting pin 12, the screw 5 inserted through the screw insertion hole 9 is swingable, and the entrance direction of the screw 5 is defined on the entrance side of the screw fixing hole 7. An introduction portion 13 is formed that expands in the opposite direction. For this reason, as shown in FIG. 3A, the tip 23 of the screw moves along the inclined surface of the introducing portion 13 and is positioned near the center of the screwing hole 7. When the screw 5 is pressed in the direction indicated by the arrow Y in FIG. 3B, the nut member 8 divided into two rotates in opposite directions around the connecting pin 12 as a rotation axis, and is biased by the torsion coil spring 11. The screw 5 enters the screwing hole 7 by expanding the diameter of the screwing hole 7 against the above. At this time, the tip 23 of the screw is preferably pointed or hemispherical.

  When the screw 5 is continuously pressed and the protrusion 14 of the screw 5 comes into contact with the nut member 8 (FIG. 3C), the screw 5 cannot enter further. At this time, since the screwing hole 7 is biased in the direction of reducing the diameter by the torsion coil spring 11, the screw groove 6 meshes with the screw 5, and the lever member 4 is fixed to the fixing member 2. Thereby, loosening of the inserted substrate B is prevented. In addition, if the screw groove 6 is formed in the screwing hole 7 at least once, the object of the present invention can be achieved, and it is preferable that the screw groove 6 is formed two or more times in order to ensure the strength of screwing.

  Thus, the board insertion / extraction tool 1 according to the present invention can easily perform the operation of mounting the board B while preventing the board B from loosening by simply turning the lever member 4 and then pressing the screw 5.

  On the other hand, the substrate B is extracted from the subrack 20 by unscrewing the screw 5 from the nut member 8 and turning the lever member 4 in the direction opposite to the arrow X in FIG. This is performed by contacting the metal fitting 25 and acting as a lever. At this time, by requiring the operator to bring the screwdriver and loosen the screw, the opportunity for the operator to reconfirm the work content is generated, thereby reducing the probability of the operator performing an erroneous operation. it can.

  In general, the board B is inserted in the depth direction of the control board or the like, and when the board insertion / extraction tool 1 is attached to the board B, it is necessary to increase the length of the control board or the like in the depth direction. The nut member 8 according to the present invention is rotated about the connecting pin 12 to expand its diameter, and does not move in the direction in which the screw 5 enters. Accordingly, if the entry direction of the screw 5 is made to coincide with the depth direction of the control panel or the like, the nut member 8 expands only in the width direction of the control panel or the like, so that it is necessary to increase the length in the depth direction of the control panel or the like. Absent. That is, an increase in the size of the control panel or the like can be suppressed.

As mentioned above, although demonstrated based on embodiment, the board | substrate insertion / extraction tool 1 which concerns on this invention is not limited to this, It can implement in various changes.
For example, the protrusion 14 of the screw 5 can be configured to also serve as a stopper for removing the screw 5 from the lever member 4. The protrusion 14 can be formed by inserting a screw 5 into the screw insertion hole 9 and then press-fitting a pin into the screw 5. However, the present invention is not limited to this, and for example, the diameter of the screw 5 may be increased. it can.

  In order to prevent the lever member 4 from turning carelessly, as shown in FIGS. 2A to 2C, a spring-biased ball 30 is provided on the fixed member 2 side, and the lever member 4 Locking holes 31 each having a size into which a part of the ball 30 is fitted can be provided at positions corresponding to when the substrate B is extracted and inserted.

The perspective view of a board | substrate insertion / extraction tool. It is a figure showing the insertion process of the board | substrate by a board | substrate insertion / extraction tool, Fig.2 (a) represents before insertion of the board | substrate B, FIG.2 (b) is in the middle of insertion, FIG.2 (c) represents the state after insertion. It is a figure explaining the process in which a screw | thread enters a nut member, Fig.3 (a) shows before entry, FIG.3 (b) is entering, FIG.3 (c) represents the state after entry.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Board | substrate insertion / extraction tool 2 Fixing member 3 Rotating shaft 4 Lever member 5 Screw 6 Screw groove 7 Screwing hole 8 Nut member 9 Screw insertion hole 10 Accommodating hole 11 Torsion coil spring 12 Connecting pin 13 Introducing part 14 Protrusion B Substrate M Screwing hole Axis N Axis of screw insertion hole

Claims (7)

In a substrate insertion / extraction tool used for insertion / extraction of a substrate, comprising a fixing member fixed to the substrate, and a lever member that is pivotably attached to the fixing member via a rotation shaft,
The lever member includes a screw that can be advanced and retracted in a direction toward the fixing member across the extending direction;
In the fixing member, a nut member having a screwing hole in which a thread groove is formed is disposed at a position where the screw can enter,
The nut member is divided into two in a direction parallel to the axis of the screwing hole, and is spring-biased in a direction in which the screwing hole is reduced in diameter by a torsion coil spring sandwiched therebetween. It is connected with a connecting pin extending in a direction perpendicular to the axis of the screw hole,
The connecting pin is attached to the fixing member in an accommodation hole formed in the fixing member;
A board insertion / extraction tool, wherein, when the board is inserted, the screw can be pressed to enter the screwing hole, and the lever member can be screwed to the fixing member. In a substrate insertion / extraction tool used for insertion / extraction of a substrate, comprising a fixing member fixed to the substrate, and a lever member that is pivotably attached to the fixing member via a rotation shaft,
The lever member includes a screw that can be advanced and retracted in a direction toward the fixing member across the extending direction;
In the fixing member, a nut member having a screwing hole in which a thread groove is formed is disposed at a position where the screw can enter,
The screw hole is spring-biased and the hole diameter is variable,
The screw is provided with a protrusion that regulates the depth of entry into the nut member,
A board insertion / extraction tool, wherein, when the board is inserted, the screw can be pressed to enter the screwing hole, and the lever member can be screwed to the fixing member. In a substrate insertion / extraction tool used for insertion / extraction of a substrate, comprising a fixing member fixed to the substrate, and a lever member that is pivotably attached to the fixing member via a rotation shaft,
The lever member includes a screw that can be advanced and retracted in a direction toward the fixing member across the extending direction;
In the fixing member, a nut member having a screwing hole in which a thread groove is formed is disposed at a position where the screw can enter,
The screw hole is spring-biased and the hole diameter is variable,
Spring urging means for urging the screw in a direction away from the lever member;
A board insertion / extraction tool, wherein, when the board is inserted, the screw can be pressed to enter the screwing hole, and the lever member can be screwed to the fixing member. The nut member, the torsion expandable der the against the spring bias of the coil spring is, the substrate insertion device of claim 1, wherein attached to the housing hole when the screw enters. The nut member is divided into a plurality of parts in a direction parallel to the axis of the screw hole, and is spring-biased in a direction in which the screw hole is reduced in diameter, and resists the spring force when the screw enters. Can be expanded,
The board | substrate insertion / extraction tool of Claim 2 or Claim 3 attached to the accommodation hole formed in the said fixing member. The screw is inserted into a screw insertion hole that penetrates the lever member in a direction toward the fixing member when the substrate is inserted.
The board insertion / extraction according to any one of claims 1 to 5, wherein the screw hole of the nut member is provided so that an axis thereof is disposed on substantially the same axis as the axis of the screw insertion hole. Ingredients.   7. The introduction portion according to claim 1, wherein an introduction portion whose diameter increases in a direction opposite to an entry direction of the screw is formed on an entrance side where the screw enters the screw hole. PCB insertion and removal tool.

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