JP2009202306A - Falling prevention holder of screw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a falling prevention holder of a screw capable of not only mounting screw and washer into a screw hole in a work by one hand holding a screwdriver but also removing the screw, etc. without dropping or scattering the screw, etc., only if the screwdriver is operated by one hand without pressing the screw, etc. by a hand, also when removing the screw and washer. <P>SOLUTION: This falling prevention holder is provided with: a holder body 2 provided with a screwdriver insertion hole 3 having a first opening 4 for inserting the screwdriver in one end face and a second opening 5 communicated with a screw hole 32 in the other end face; and a holding member 10 slidably supported by the holder body 2 so that a distal end part 11 may be freely projected and plunged into the second opening 5 and supporting a male screw part of the screw by the distal end part 11 when the distal end part 11 is projected into the second opening 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, when a screw is attached to or detached from a screw hole provided in a terminal block or the like by a screwdriver, it is possible to eliminate a problem that a screw or a washer drops and contacts a peripheral electrode to cause a short circuit or dissipate. The present invention relates to a screw drop-off prevention holder.

The conductor part of the cable is connected by screwing the screw through the washer to the screw hole provided in the terminal block provided on the printed wiring board and the terminal block provided in various devices, and the screw and washer are removed from the screw hole. When removing, manual work using a driver is performed. When attaching the screw, hold the screw with the fingertip of one hand and keep the tip of the male screw in contact with the screw hole. Perform wearing work. On the other hand, when removing the screw, the screw is loosened with a screwdriver and pulled out from the screw hole, and then the screw is picked up by the fingertip of the other hand.
When attaching and detaching screws using a screwdriver, screws and washers often fall and come into contact with surrounding electrodes or dissipate.
There are also known drivers that prevent the screw from falling by magnetizing the tip and adhering the screw head, but there are individual differences in ease of use and the screw head can be adsorbed sufficiently. There are many cases of falling. In particular, when a washer is used in combination, even the washer cannot be adsorbed by the tip of the driver. Therefore, it has been necessary to keep the washer held with a finger of one hand so as not to fall off from the screw. Even when removing the screw and washer, the washer is likely to fall off from the screw, so that sufficient care must be taken.
In particular, the smaller the size of the screw, the more difficult it is to manually attach and remove the screw and washer, and the screw and washer are dissipated, or the dissipated screw and washer are in contact with the conductor portion of the electrical circuit nearby. In many cases, short-circuiting occurs.

In Japanese Patent Application Laid-Open No. 07-1352 “Screw with tube”, a cylindrical tube having a cut at the tip is attached so as to surround the metal rod portion of the driver, and the screw is attached to the tip of the driver by the elasticity of the tip of the tube. It is disclosed that, by pressing, it is possible to attach and detach the screw without pressing the screw by hand.
However, in this conventional example, the tube tip protruding beyond the driver tip becomes an obstacle, and it is difficult to screw the screw into the screw hole. Moreover, when using a washer together, it is unclear whether or not the washer can be held by the tube. Further, when removing a screw in a screwed state, there is a problem that dissipation cannot be prevented unless the screw and the washer are kept pressed with one hand.
Japanese Laid-Open Patent Publication No. 2001-1275 discloses a screwdriver set in which a screw or washer is held in a distal end opening of a cylindrical screw holder made of a soft resin that is slidably fitted to an outer surface of a metal rod portion of a driver. On the other hand, it is disclosed that the screw can be screwed only by operating the driver held by one hand by bringing the screw head into contact with the driver tip.
However, even in this conventional example, when removing the screw in the screwed state, there is a problem that dissipation cannot be prevented unless the screw and the washer are continuously pressed with one hand.
Japanese Patent Application Laid-Open No. 07-1352 JP 2001-1275 A

In order to improve the workability of screwing the screw into the screw hole by the driver, means for holding the screw head in contact with the tip of the driver has been proposed, but there is a problem in workability at the time of screwing. In addition, when removing screws and washers using a screwdriver, there is a problem that screws and the like are easily dissipated unless they are pressed with other hands.
The present invention has been made in view of the above circumstances, and not only can a screw and a washer be attached to a screw hole by one hand holding a driver, but also a screw or the like can be removed by hand when removing the screw and washer. An object of the present invention is to provide a screw drop-off prevention holder that can be removed without dropping and dissipating a screw or the like by operating the driver with one hand without pressing.

In order to achieve the above object, the invention of claim 1 is a screw drop-off prevention holder used when a screw is attached to and detached from a screw hole provided on a mounting surface using a screwdriver, A holder body having a driver insertion hole having an opening on one end surface and a second opening on the other end surface communicating with the screw hole in a state of being attached to the mounting surface, A holding member that is slidably supported by the holder body so as to be able to protrude into the opening of the two and supports the male screw portion of the screw by the tip when protruding into the second opening. , Provided.
Since the holding member protruding into the opening of the driver insertion hole for inserting the metal rod portion of the driver is provided, the screw head can be held by the holding member. For this reason, the screw does not fall off during the screw attaching / detaching operation.
According to a second aspect of the present invention, in the first aspect of the present invention, the holding member distal end portion is provided with a recess for fitting the male screw portion of the screw.
Since the recess is provided at the tip of the holding member, the screw head can be stably supported on the tip. Moreover, it becomes easy to insert the front-end | tip part of a holding member in the screw head lower surface.

According to a third aspect of the present invention, in the first or second aspect of the present invention, an elastic member that urges the front end portion of the holding member in a direction to project into the second opening is provided.
The operability can be improved by using an elastic member as a means for projecting the holding member tip from the second opening into the second opening.
The invention of claim 4 is characterized in that in claim 3, a stopper is provided for locking the holding member in a state in which the tip portion is retracted from the opening.
By providing a stopper that holds the holding member in the retracted position, the tip of the holding member can be protruded into the second opening by a one-touch operation by releasing the stopper.

According to a fifth aspect of the present invention, in the first or second aspect of the present invention, an elastic member that urges the front end portion of the holding member in a direction to retract from the second opening is provided.
The operability can be improved by using an elastic member as a means for retracting the holding member tip from the second opening from the state in which it protrudes into the second opening.
The invention of claim 6 is characterized in that in claim 5, a stopper is provided for locking the holding member in a state in which the tip end portion projects into the opening.
By providing the stopper that holds the holding member in the protruding position, the tip of the holding member can be retracted out of the second opening by a one-touch operation by releasing the stopper.

A seventh aspect of the present invention provides the method according to any one of the first to sixth aspects, wherein the holding member is made of a flexible plate material and has a substantially L-shaped locus by a guide portion provided on the holder body. It is supported so that it can move along.
The degree of freedom in layout can be increased by advancing and retracting the holding member along the movement path of the holding member along the substantially L-shaped path from the side surface of the holder body to the second opening while elastically deforming the holding member.
The invention of claim 8 is the structure according to any one of claims 1 to 6, wherein the holding member is configured to be movable along a linear locus parallel to the opening surface of the second opening. It is characterized by.
The moving path of the holding member can be set to the shortest distance.

The invention of claim 9 is configured to enable manual operation in any one of claims 1 to 8 by exposing or projecting an operation portion provided on the rear end side of the holding member from the side surface of the holder body. It is characterized by that.
A tenth aspect of the present invention is that in any one of the first to ninth aspects, a transparent portion or an open portion is provided on at least a part of the holder body so that the contact state between the driver tip and the screw can be visually observed. It is characterized by that.
The operability can be enhanced by observing the state of the driver tip with the screw head.

The invention of claim 11 is characterized in that, in any one of claims 1 to 10, at least the tip of the holding member is made of a permanent magnet material.
If the screws and washers are magnetic, they can be adsorbed and held by the holding member tip.
A twelfth aspect of the present invention provides the holder body according to any one of the first to eleventh aspects, wherein the holder main body includes a regulating member that contacts the driver outer peripheral surface inserted into the driver insertion hole and regulates driver blurring. It is characterized by being.
The operational stability of the driver can be improved.

As described above, according to the present invention, the holder main body having the driver insertion hole having the first opening for inserting the driver on one end face and the second opening communicating with the screw hole on the other end face; The tip of the screw is slidably supported by the holder body so that the tip can be protruded into the second opening, and the screw is supported by the tip when the tip protrudes into the second opening. The screw and washer can be attached to the screw hole by one hand holding the driver, and when removing the screw and washer, one hand can be used without holding the screw or the like. Thus, it is possible to provide a screw drop-off preventing holder that can be removed without dropping or dissipating a screw or the like simply by operating the driver.
When attaching the screw and washer to the screw hole with a screwdriver, set the screw and washer on the holding member in the holder, and then contact the screw tip with the screw hole before tightening with the screwdriver. Is prevented. Similarly, when the screw is removed, the holding member prevents the dissipation of the screw or the like.
Workability can be improved by using the elastic member and the stopper together to make the operation of the holding member a one-touch operation.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
1A to 1D are an external perspective view, a longitudinal sectional view, a perspective perspective view, and a plan lateral sectional view of a screw drop-off prevention holder according to an embodiment of the present invention.
A screw drop prevention holder (hereinafter referred to as a holder) 1 according to the present invention is screwed or screwed into a screw hole 32 provided in a mounting surface 31 of a terminal block 30 using a screwdriver 40. This means is used when the screw 20 is removed. In addition, when the washer 21 is used together with the screw 20, the holder 1 functions so that the screw can be easily attached and detached by holding the screw having the washer inserted through the male screw portion.

The holder 1 is slidably supported by the holder main body 2 having a driver insertion hole 3 penetrating in the vertical direction and the holder main body 2 so that the tip portion can protrude into the second opening 5 from the lateral direction. And a holding member 10 that supports the male screw portion of the screw by the tip portion 11 when protruding into the second opening. The driver insertion hole 3 has a first opening 4 into which the metal rod portion 41 of the driver 40 is inserted at one end, and communicates with the screw hole 32 in a state where the tip end surface of the holder body 2 is attached to the mounting surface 31. A second opening 5 is provided at the other end.
When the metal rod portion 41 of the driver 40 is inserted into the driver insertion hole 3, the grip portion 42 of the driver 40 is positioned outside the holder body 2, so that the grip portion 42 can be gripped by hand. . The screw tip 32 is positioned in the screw hole 32 in a state where the second opening 5 side of the holder body 2 is attached to the mounting surface 31 of the terminal block and the screw hole 32 is positioned in the second opening 5; The screw can be screwed by rotating the head of the screw 20 held by the holding member 10 in contact with the tip of the driver.
By providing a recess 11a into which the male screw portion of the screw 20 is fitted at the distal end portion 11 of the holding member 10, it becomes easy to stably hold the lower surface of the screw head. When the screw 20 and the washer 21 are used in combination, the lower surface of the washer 21 is supported by the upper surface of the distal end portion 11.

In the holder according to this embodiment, the holding member 10 is made of a flexible plate material such as metal or resin, and a substantially L-shaped trajectory by a guide portion (guide groove or the like) 6 provided in the holder body 2. It is supported so that it can move along. The holding member 10 serving as a plate member is provided on the side surface of the holder main body 2 on the side of the holder body 2, a tip portion 11 protruding and retracting from the lateral direction in the second opening 5, a portion extending rearward from the tip portion 11 and guided by the guide portion 6. And an operating portion 12 protruding (or exposed) from the formed opening 2a. The operation portion 12 has a protruding shape that can be easily pressed by a finger, and when the operation portion 12 is pushed down, the distal end portion 11 protrudes into the second opening 5 so that the screw can be held and pulled back. As a result, the tip 11 is retracted from the second opening 5 and does not hold the screw.
The path along which the tip 11 of the holding member 10 moves along the opening surface of the second opening 5 may be a position along the second opening 5 (the lower surface of the holder body 2) as shown in the figure, It may be a position retracted slightly upward. In any case, the lower end of the head of the screw or the lower surface of the washer is set so as to be held by the upper surface of the tip when the tip 11 projects into the second opening 5 from the lateral direction.
The holding member 10 may be pushed down or pulled back by a manual operation, or may be configured to be constantly urged by the elastic member 13 in a direction in which the tip 11 of the holding member protrudes into the second opening 5. On the contrary, you may comprise so that the front-end | tip part 11 may be urged | biased by the elastic member 13 in the direction retracted | saved from 2nd opening.

For example, as shown in FIGS. 1A and 1B, the elastic member 13 is disposed between a spring support portion 14 provided at an appropriate position inside the holding member 10 and the upper portion of the holder body 2.
By using a tension spring that biases the elastic member 13 in the compression direction, the distal end portion 11 of the holding member 10 can be constantly biased in the retracting direction. In this case, a stopper (locking and locking) that locks or unlocks the holding member in a state where the tip of the holding member protrudes into the second opening 5 (a state in which the elastic member is expanded). It is preferable that a release means is provided at an appropriate position so that when the stopper is released, the distal end portion of the holding member is retracted from the second opening by the compressive force of the elastic member 13.
Conversely, by using a compression spring that urges the elastic member in the expanding direction, the tip end of the holding member 10 can be constantly urged in the protruding direction. In this case, a stopper that locks the holding member in a state in which the tip of the holding member is retracted from the second opening (a state in which the elastic member is compressed) is provided at an appropriate position, and the elastic member is released when the stopper is released. It is preferable that the holding member tip end portion protrudes into the second opening 5 by the expanding force.
The stopper may be a locking member that protrudes into the annular operation portion 12 provided at the rear end portion of the holding member, for example.

Next, FIG. 2 is a diagram illustrating a procedure for screwing screws and washers into the screw holes of the terminal block using the holder 1 of the present invention.
First, prior to the screwing operation, as shown in FIGS. 2 (a) and 2 (b), the holding member 10 is lowered so that the tip 11 protrudes into the second opening 5, and from the first opening 4. The male screw portion of the inserted screw 20 is fitted in the recess 11a. When the washer 21 is used together, the male screw portion is fitted in the recess 11 a of the tip portion 11 with the central hole of the washer inserted into the male screw portion of the screw.
In this state, as shown in FIG. 1B, the holder 1 is seated on the mounting surface 31 of the terminal block 30, and then the screwdriver 40 is inserted through the first opening 4 with the screw tip corresponding to the screw hole 32. Is inserted into the groove of the screw head, and then screwing is started by rotating the driver (FIG. 2 (c)). Thereafter, the holding member 10 is pulled up to sufficiently retract the tip 11 from the second opening, and then the screwing is completed, and the holder 1 and the driver 40 are removed from the terminal base surface. In such a process, the screw and washer are held by the tip of the holding member, and therefore do not fall off or dissipate.
It should be noted that the holder 1 may be removed from the terminal block when the screw is screwed to some extent by the tightening by the driver, and the tightening may be performed only by the driver.

Next, FIG. 3 is a diagram for explaining a procedure for removing screws and washers screwed into the screw holes of the terminal block using the holder 1 of the present invention.
First, prior to the removal work, the tip 11 is retracted from the second opening 5 by raising the holding member 10. In this state, as shown in FIG. 3 (a), the holder 1 is seated on the mounting surface 31 of the terminal block, and then the tip of the driver inserted through the first opening 4 is inserted into the groove on the screw head, and then the screw is removed. The screw removal is started by rotating in the direction (FIG. 3B). When the screw 20 and the washer 21 are slightly lifted from the mounting surface 31, the holding member 10 is lowered to fit the male screw portion of the screw into the recess 11a at the tip. At this time, the lower surface of the washer is also supported on the tip. Subsequently, the operation by the driver is continued, and the removal is completed by removing the screw from the screw hole (FIG. 3C). In this detaching process, the screw and washer are held by the holding member, and therefore do not fall off or dissipate.
It should be noted that the holder may be removed from the terminal block when the screw has been removed to some extent by the work by the driver, and the removal may be performed only by the driver.

According to the present invention, not only can the screw and washer be attached to the screw hole by one hand holding the driver, but also the driver can be operated with one hand without pressing the screw or the like when removing the screw and washer. You can remove the screws without dropping or dissipating them.
Further, by using a plate material that can be elastically deformed as the holding member, it is possible to increase the degree of layout freedom related to the movement path of the holding member in the holder body.
In addition, the shape of the holder main body 2 may be a polygonal column shape other than the quadrangular column shape as shown in FIG. 1, or a part or the whole may be a tapered shape as shown in FIG.

Next, FIGS. 5A and 5B are an external perspective view and a longitudinal sectional view showing a modification of the holder of the present invention, and the holding member 10 according to this embodiment is an opening of the second opening 5. It is characteristic that it is configured to be movable along a linear locus (shortest movement path) parallel to the surface. That is, the holding member 10 is a plate member having a recess (not shown) at the tip end portion 11, and is inserted into a slit 2 b formed at the lower side of the side surface of the holder body 2, and is parallel to the opening surface of the second opening 5. It is configured to be able to advance and retreat on the route. In the holder body 2, a guide portion that stably guides the holding member 10 along the path is provided.
An operation portion 12 is provided at an outer end portion of the holding member 10, and the holding member distal end portion 11 can be brought into and out of the second opening 5 by pushing or pulling out the operation portion 12 with a finger. Further, the elastic member 13 (torsion spring) may be used to bias the holding member in a direction in which the holding member protrudes into the second opening, or may be biased in a direction in which the holding member is retracted from the second opening. Moreover, you may arrange | position the stopper (locking | engagement and latch release means) which stops the holding member elastically biased in the position which resisted the biasing force of the elastic member.

In each of the above-described embodiments, if at least the tip portion 11 of the holding member 10 is made of a permanent magnet material so that a screw or a washer made of a magnetic material can be attracted and held, the fall of the screw or the like , Can effectively prevent dissipation.
Moreover, you may provide the control member which contacts the driver outer peripheral surface inserted in the driver insertion hole 3 of the holder main body 2, and controls a driver's lateral movement and prevents a driver's shake. This restricting member is, for example, a cylindrical member disposed in the driver insertion hole 3.
Furthermore, you may comprise so that the contact state of a driver front-end | tip part and a screw | thread can be visually observed by providing a transparent part or an open part in at least one part of the holder main body 2. FIG.

When attaching and detaching a screw with a driver using the holder of the present invention, the driver 1 is operated with the other hand while holding the holder 1 with one hand and abutting it on the terminal block. Or in order to make it easy to hold the holder 1 with a finger, the length and outer shape of the holder are appropriately set.
In addition, when a plurality of screw holes are arranged at equal pitches on the terminal block side, a holder unit in which a plurality of holders corresponding to each screw hole are connected is prepared and provided in one holder unit. It is convenient if a screwdriver is inserted into each screwdriver insertion hole so that an operation for screwing or removing can be performed.
Further, the driver may be pivotally supported in advance in the driver insertion hole.

(A) thru | or (d) are the external appearance perspective view of the screw drop-off prevention holder which concerns on one Embodiment of this invention, the longitudinal cross-sectional view which shows a use state, a perspective perspective view, and a plane cross-sectional view. (A) (b) And (c) is a figure explaining the procedure of screwing a screw and a washer in the screw hole of a terminal block using the holder of this invention. (A) (b) And (c) is a figure explaining the procedure which removes the screw | thread and washer which were screwed by the screw hole of the terminal block using the holder of this invention. It is a figure which shows the modification of the holder of this invention. (A) And (b) is the external appearance perspective view which shows the modification of the holder of this invention, and a longitudinal cross-sectional view.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Holder, 2 ... Holder main body, 2a ... Opening part, 2b ... Slit, 3 ... Driver insertion hole, 4 ... 1st opening, 5 ... 2nd opening, 6 ... Guide part, 10 ... Holding member, 11 ... Tip part, 11a ... recess, 12 ... operation part, 13 ... elastic member, 14 ... spring support part, 20 ... screw, 21 ... washer, 30 ... terminal block, 31 ... mounting surface, 32 ... screw hole, 40 ... driver , 41 ... Metal rod part, 42 ... Gripping part

Claims (12)

A screw drop-off prevention holder used when attaching / detaching a screw with a screwdriver in a screw hole provided on the mounting surface,
A holder body having a driver insertion hole having a first opening on one end surface through which the driver is inserted and a second opening communicating with the screw hole in the state attached to the mounting surface on the other end surface And a male screw of the screw by the tip when the tip is protruded into the second opening and supported by the holder body so that the tip can protrude into the second opening. A screw drop-off prevention holder comprising: a holding member that supports the portion.   The screw drop-off prevention holder according to claim 1, further comprising a recess into which the male screw portion of the screw is fitted at the distal end portion of the holding member.   The screw drop-off prevention holder according to claim 1 or 2, further comprising an elastic member that urges the distal end portion of the holding member in a direction in which the tip end portion projects into the second opening.   The screw drop-off prevention holder according to claim 3, further comprising a stopper that locks the holding member in a state in which the tip portion is retracted from the opening.   The screw drop-off prevention holder according to claim 1 or 2, further comprising an elastic member that urges the distal end portion of the holding member in a direction to retract the second member from the second opening.   6. The screw drop-off prevention holder according to claim 5, further comprising a stopper that locks the holding member in a state in which the tip portion protrudes into the opening.   The said holding member consists of a board | plate material which has flexibility, and is supported by the guide part provided in the said holder main body so that a movement along a substantially L-shaped locus | trajectory is possible. The screw drop-off prevention holder according to any one of the above.   The screw according to any one of claims 1 to 6, wherein the holding member is configured to be movable along a linear locus parallel to the opening surface of the second opening. Fall-off prevention holder.   The screw according to any one of claims 1 to 8, wherein an operation portion provided on a rear end portion side of the holding member is exposed or protruded from a side surface of the holder main body so as to be manually operable. Fall-off prevention holder.   The screw according to any one of claims 1 to 9, wherein a transparent part or an open part is provided in at least a part of the holder main body so that a contact state between the driver tip part and the screw can be visually observed. Fall-off prevention holder.   The screw drop-off prevention holder according to any one of claims 1 to 10, wherein at least a tip portion of the holding member is made of a permanent magnet material.   The said holder main body is provided with the control member which contacts the said driver outer peripheral surface inserted in the driver insertion hole, and controls the blurring of a driver, The Claim 1 thru | or 11 characterized by the above-mentioned. Screw dropout prevention holder.

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