JP2003305662A - Driving position guide adapter for screw driving apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving position guide adapter for a screw driving apparatus capable of easily and rapidly driving a screw into a prescribed position even when a screw fastened part of a driven member is in a limited space such as an inner bottom face of a groove. <P>SOLUTION: The screw driving apparatus for driving the screw S held to a screw holding belt 70 and fed into a driving position, into the driven member by a driver bit 7 mounted to a driver tool, is provided with a cylindrical casing 1 mounted to the tip part of the driver tool; a sliding member 2 fittingly inserted in a slidable manner into the casing 1 through a return spring 5; and a screw holding belt feed mechanism 20 provided at the sliding member 2. The screw fastened part of the driven member is in an inner part of a groove part of prescribed depth. A position adjusting adapter 40 provided projecting from a front end face 11a of the sliding member 2 is formed of a metal plate into flat plate shape, and the projecting length from the front end face 11a is set corresponding to the prescribed depth. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw driving device which is mounted on a driver tool and continuously drives the screws held in a row by a screw holding belt one by one,
In particular, the present invention relates to a driving position guide adapter for a screw driving device, which is suitable for a case where the screwed portion of the driven member is on the inner bottom surface of the groove.

[0002]

2. Description of the Related Art A screw driving device of this type includes a cylindrical casing attached to the tip of an electric screwdriver tool,
A sliding member slidably fitted into the casing via a return spring; and a screw holding belt feeding mechanism provided on the sliding member for feeding the screw holding belt by one pitch of a screw holding interval, A screw held by the screw holding belt and sent to the driving position is driven and screwed to the driven member by a driver bit mounted on the electric screwdriver tool.

In such a screw driving device, a screw length adjusting adapter is usually provided at the front end portion of the sliding member so that the protrusion amount can be adjusted according to the length of the screw to be applied (for example, Japanese Patent No. 3086438, Japanese Patent Application Laid-Open No. H04-4
-289081, Japanese Patent Laid-Open No. 6-114751).

[0004]

The screw length adjusting adapter is, for example, an L-shaped metal plate or a nut-shaped tubular body. When the screwing portion of the driving member is in a limited space such as when the inner bottom surface of the deep groove portion or the width of the groove portion is narrow, the adjusting adapter interferes with the driven member and drives the screw. You may not be able to For example, as shown in FIG. 13, in a housing by a steel frame construction method (commonly called a steel house), C-shaped steels 71, 71 of a relatively thin galvanized steel plate having a thickness of about 1 mm are joined back to back with a drill screw S. A large amount of frame material is used, but the opening 7 between the bent edges 72, 72 of the C-shaped steel 71
When the tip of the screw driving device is inserted through 3 and the screw S is driven into the inner bottom surface 74, the central portion A of the bottom surface 74
Although the drill screw S can be driven into the drill screw S, the screw length adjusting adapter interferes with the bend end edge 72, and the drill screw S is inserted into the inner portion B near the bend end edge 72.
The current situation is that they cannot be driven and are manually screwed.

Further, as shown in FIG. 14, when the screw S is driven into the inner bottom surface 78 of the groove 77 having a narrow groove width in the special shape steel 76, the screw length adjusting adapter is used for the groove 77.
Since it interferes with the opening 79, the screwing is impossible.

The present invention has been made in view of the above circumstances, and even if the screwed portion of the driven member is in a limited space such as the inner bottom surface of the groove portion, it can be positioned at a predetermined position. An object of the present invention is to provide a driving position guide adapter for a screw driving device that can easily and quickly drive a screw.

[0007]

In order to achieve the above object, the present invention has a cylindrical casing attached to the tip of a driver tool, and slidably fitted in the casing via a return spring. And a screw holding belt feeding mechanism which is provided on the sliding member and which feeds the screw holding belt by one pitch of the screw holding interval. The screw holding belt is provided by a driver bit attached to the driver tool. In the screw driving device for driving the screw held at the driving position and driven to the driven member into the driven member, the screwing portion of the driven member is located inside the groove portion of a predetermined depth and protrudes to the front end surface of the sliding member. The position adjustment adapter provided as a flat plate is formed of a metal plate, and the protruding length from the front end face is set to correspond to the predetermined depth. To.

It is preferable that the driving position guide adapter has an inner side surface (a surface facing the driver bit) disposed in proximity to the screw driven into engagement with the driver bit.

When the member to be driven is C-shaped steel and the screwed portion is the inner bottom surface near the bent edge of the C-shaped steel, the outer surface of the driving position guide adapter (opposing the driver bit). When the rear surface of the surface is brought into contact with the bent edge to guide the positioning, the screw driving operation can be performed easily and accurately.

When the driven member is a shaped steel having a narrow groove portion and the screwed portion is on the inner bottom surface of the groove portion, the driving position guide adapter is slightly smaller than the groove width of the groove portion. The width is formed. At this time, it is desirable to provide a reinforcing rib on the outer surface of the adapter (the back surface of the surface facing the driver bit).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a screw driving device having a driving position guide adapter according to the present invention. The screw driving device includes a tubular casing 1 and
A sliding member 2 slidably fitted in the casing 1, and the sliding member 2 has a spring receiving hole 3 provided at a rear portion thereof.
(Refer to FIG. 2) and the lid 4 fitted in the rear end opening of the casing 1 are always biased forward by a return spring 5 interposed. When using, casing 1
The cylindrical body 6 connected to the lid body 4 of FIG. 1 is coupled to an electric screwdriver tool (not shown), and the driver bit 7 of the electric screwdriver tool penetrates the lid body 4 and the spring receiving hole 3 as shown in the drawing. The guide passage 9 of the screw holding belt 70 (see FIG. 5) provided at the tip of the sliding member 2 is inserted into the small-diameter insertion hole 8 (see FIG. 2) that is continuously provided inside the spring receiving hole 3. It extends to the vicinity.

The screw holding belt 70, as shown in FIG. 5, is an elongated belt-shaped body 7 made of a soft synthetic resin material.
1 are provided with holding cylinders 72 for holding the drill screws S in a row at a constant pitch, and notches 73 are provided at the same pitch as the holding cylinders 72 along both side edges of the belt-shaped body. And is provided at an intermediate position of each holding cylinder 72. Then, the belt holding belt 70 is guided in the vertical direction of the sliding member 2 through the vertically extending guide passage 9 provided at the upper end of the sliding member 2, and the screw holding belt fed in the sliding member 2 is fed. The mechanism 20 intermittently transfers the screw holding belt 70 by one pitch, and the screws S are sequentially sent to the driving position opposite to the tip of the driver bit 7. The screw holding belt feeding mechanism 2
Details of 0 will be described later.

The sliding member 2 is composed of a main body 11 to which a screw holding belt feeding mechanism 20 described later is assembled, and a cover body 12 fixed to one side surface portion 13 of the main body 11. The body 11 has an elongated vertical groove 10 that forms the spring receiving hole 3, the bit insertion hole 8 and the belt guide passage 9 described above.
On the other hand, the side surface portion 13 to which the cover body 12 is attached is provided with a recessed portion 14 for accommodating the screw holding belt feeding mechanism 20, and the outer surface 15 on the opposite side of the side surface portion 13 is driven in later. An engagement groove 16 (see FIGS. 5 and 6) for engaging the support portion 41 of the position guide adapter 40 is provided. On the other hand, on the outer side surface 17 of the cover body 12,
As shown in FIG. 3, a guide groove 18 extending in the longitudinal direction is provided, and a locking pin 19 fixed to the casing 1 engages with the guide groove 18 to slide within the guide groove 18. The member 2 is slidable with respect to the casing 1. The other end of the cover body 12 is provided with another vertical groove 10 (see FIG. 2) that cooperates with the main body 11 to form the belt guide passage 9 when fixed to the main body 11.

Next, the screw holding belt feeding mechanism 20 will be described. The feed mechanism 20 includes a feed gear 21 that intermittently feeds the screw holding belt 70 by one pitch, a pawl wheel 22 that is provided coaxially with the feed gear 21 and that intermittently feeds and rotates only in one direction, and the pawl. It is provided with a crank lever 23 and a feed pawl 24 for operating the vehicle 22. The feed gear 21 and the ratchet wheel 22 are integrally manufactured, and eight teeth 21a and eight nails 22a are provided on the outer peripheral portion at equal pitches, respectively, and the outer surface of the ratchet wheel 22 is a fixed position stopping sphere. 29 (Fig. 5
Eight recesses 25, which are engaged with each other, are provided at equal pitches. On the other hand, the feed gear 2 is provided on the inner surface of the cover body 12.
1 and a support shaft 26 that pivotally supports the ratchet wheel 22 are fixedly provided in a protruding manner, and a pair of fitting holes 27, 2 corresponding to the recess 25 are provided.
7 (see FIG. 5) is provided, and both fitting holes 27, 2 are provided.
7 through the pressing springs 28, 28 to the fixed position stopping sphere 2
9, 29 are fitted in a state in which they are urged by pushing. Then, the feed gear 21 and the ratchet wheel 22 are attached to the support shaft 26.
Rotatably supported on the main body 11 with the protruding portion of the support shaft 26.
The cover body 12 is inserted into the mounting hole 26a provided in
1, the feed gear 21 and the ratchet wheel 22 are housed in the recessed portion 14 provided in the side surface portion 13, and the spherical bodies 29, 29 are engaged with the corresponding recessed portions 25, 25. Then, the feed gear 21 is stopped at a predetermined position. At this time, the support shaft 26 is arranged at right angles to the driver bit 7 penetrating the sliding member 2 in a plan view. Further, in the feed gear 21 stopped at the predetermined position, one tooth 21 a projects from the notch 14 into one vertical groove 10 of the guide passage 9, that is, the vertical groove 10 provided in the cover body 12, and is guided into the guide passage 9. It is inserted and engages with one notch 73 of the screw holding belt 70 guided by the both vertical grooves 10, 10.

On the other hand, the crank lever 23 and the feed pawl 24
Before the cover body 12 is fixed to the main body 11, it is housed and assembled in the recessed portion 14 of the side surface portion 13 in advance. The crank lever 23 is swingably attached to the side surface portion 13 at a position close to the feed gear 21 by a support shaft 30. One end of the crank lever 23 protrudes above the sliding member main body 11 and a roller 31 attached to the protruding end portion is provided. The end surface of a step portion 35 provided on the upper portion of the casing 1 described later is brought into contact with and engaged with the end surface. On the other hand, the feed claw 24 is provided on the other end of the crank lever 23.
The base end portion of is connected pivotally via a pivot pin 32.
The feed claw 24 is a spring 33 wound around a pivot pin 32.
The hook portion 24a at the tip is caused by the spring pressure of
Is urged to maintain the engaged state with. Casing 1
As shown in FIG. 2, a notch 34 having a step 35 is provided in the upper part of the. When the sliding member 2 is pushed into the casing 1 against the return spring 5, the notch portion 34 and the step portion 35 are provided with the feed gear 21 and the feeding pawl 24 that project above the main body 11 of the sliding member 2. The roller 31 is provided to abut on the end surface of the step portion 35 to press the crank lever 23 and rotate in the counterclockwise direction while avoiding the interference with 1. When the crank lever 23 operates counterclockwise in FIG. 1 with the support shaft 30 as a fulcrum, the feed pawl 24 is pulled in conjunction with this, and the pawl wheel 22 and the gear 21 are rotated by ⅛ rotation. By the intermittent rotation of the feed gear 21, the screw holding belt 70 is fed by one pitch. Then, when the sliding member 2 again projects from the casing 1 by the action of the return spring 5,
The crank lever 23 and the feed pawl 24 return to the posture of FIG. 1 by the spring pressure of the spring 33, and the hook portion 24a of the feed pawl 24 engages with the next pawl 22a of the ratchet wheel 22.

Next, the sliding member 2 is attached to the rear end of the main body 11, and the projection length of the sliding member 2 adjusts the pushing depth of the sliding member 2 into the casing 1, that is, the screwing depth of the driver bit 7. The rod 50 will be described. As shown in FIGS. 6 to 8, the adjusting rod 50 is provided with a short rod 52 at one end of an intermediate mounting shaft 51 and a long rod 53 at the other end, and two rods are provided on the outer peripheral surface of the mounting shaft 51. It has a structure in which locking ring grooves 54 and 55 are provided, and the short rod 52 and the long rod 53 can be switched and used by reversing the direction. In the illustrated example, the short rod 52 is used. That is, the long rod 52 is inserted into the mounting hole 56 extending from the rear end to the front end of the main body 11 of the sliding member 2,
A short rod 52 is projected rearward from the main body 1 by engaging and holding and fixing an elastically displacing spring wire 57 disposed in the opening of the mounting hole 56 with the locking ring groove 54. The spring wire 57 is formed by bending a piano wire into a U shape, and is fixed to the rear end of the main body 11 with a set screw 58, and elastically deforms when the adjusting rod 50 is inserted or pulled out.

When the sliding member 2 is pushed into the casing 1, the adjusting rod 52 penetrates the through hole 59 (see FIG. 1) provided in the rear lid 4 of the casing 1 and the cylindrical body 6 The sliding member 2 is pushed into the casing 1 to a position where the sliding member 2 comes into contact with the adjustment ring 60 that is screwed into the casing 1. And
By changing and adjusting the position of the adjusting ring 60, the pushing depth of the sliding member 2, that is, the screwing depth of the driver bit 7 is adjusted according to the length of the screw S held by the screw holding belt 70. It is like this. Also,
By simply pulling out the adjusting rod 50 against the elastic holding force of the spring wire 57, reversing the direction, and inserting the adjusting rod 50 into the mounting hole 56, it is possible to easily switch to the long rod 53 for use. Therefore, the adjustment amount of the adjustment ring 60 is reduced by using both the large length adjustment by switching the short rod 52 and the long rod 53 of the adjustment rod 50 and the fine adjustment by the adjustment ring 60, and the sliding member with respect to the casing 1. The pushing depth of 2, that is, the screwing depth of the driver bit 7 can be easily adjusted over a wide range. The adjustment ring 60 is provided with a locking metal fitting 61.

Next, the driving position guide adapter 40 provided so as to project from the front end surface of the main body 11 of the sliding member 2 will be described. As shown in FIG. 9, the adapter 40 is formed by bending a metal plate, and the engaging groove 16 of the main body 11 is formed.
Is bent and bent at a right angle from the front end edge of the support portion 41 which is engaged with and fixed to, and is formed continuously in a flat plate shape. Length L of the adapter 40
Is a predetermined depth M of a screwed portion of a driven member to be described later.
Is set according to the above, and both side edges of the tip end portion 43 are chamfered. The support portion 41 is provided with a mounting hole 44,
The support portion 41 is engaged with the engagement groove 16, and the intermediate step portion 42 is fixed to the main body 11 by a set screw 46 inserted into the mounting hole 44 in a posture in which the intermediate step portion 42 is locked to the front end surface 11a of the main body 11. -Shaped driving position guide adapter 40 is provided on the front end face 1 of the main body.
It is provided so as to project a predetermined length L from 1a. In such a protruding adapter 40, the inner side surface 40a facing the driver bit 7 is arranged in proximity to the drill screw S engaged with the driver bit 7 and driven as shown in phantom in FIG. It

FIG. 10 shows an example of use of the screw driving device having the driving position guiding adapter 40 constructed as described above. The driven member is a pair of C-shaped steels 71, 71, similar to the one shown in FIG. 13, and both C-shaped steels 71, 71 are back-to-back and connected by a drill screw S to form a frame member. The length L of the adapter 40 is set to be slightly longer than the depth M from the opening 73 of the C-shaped steel 71 to the bottom surface 74. First, the outer surface 40b of the adapter 40 is attached to the C-shaped steel 7
When the adapter 40 is inserted inward from the opening 73 while being guided by being applied to the bent edge 72 of No. 1 and the tip 43 is pressed against the bottom surface 74, the screw driving operation is performed.
A drill screw S is driven and screwed to the screwing portion B of the inner bottom surface 74 in the vicinity of the bent edge 72. Similarly, the drill screw S is also driven and screwed in the screw fastening portion B of the inner bottom surface 74 in the vicinity of the bending edge 72 on the opposite side. If necessary, drill screw S on the central portion A of the bottom surface 74
It is also possible to type in.

FIG. 11 shows another driving position guide adapter 40 'according to the present invention. The adapter 40 'is
Like the adapter 40, it is formed of a metal plate into a flat plate shape, and has a special shape steel 76 shown in FIG.
Is used to drive the drill screw S into the inner bottom surface 78 of the narrow groove 77. The lateral width V of the adapter 40 'is the groove 7
7 is formed to be slightly smaller than the groove width W of the opening 79, and the length thereof is set to be slightly longer than the depth from the opening 79 of the groove 77 to the inner bottom surface 78, and is formed in an elongated plate piece. The adapter 40 ′ is fixed to a mounting plate piece 47 that is bent at a right angle from the leading edge of the support portion 41 ′ that engages with the engagement groove 16 of the main body 11 of the sliding member 2 and extends to the front end surface 11 a of the main body 11. It is projected. The support portion 41 ′ has the same shape as the support portion 40 of the adapter 40 and has a mounting hole 44 ′. A driver bit 7 and a drill screw S are provided in the center of the mounting plate piece 47.
A through hole 48 through which the mounting plate piece 4 passes.
The inner surface 40a 'of the adapter 40' fixed to 7 is disposed adjacent to the through hole 48, and is close to the drill screw S which engages with the driver bit 7 and passes through the through hole 48. Also,
A rib 49 for reinforcing the narrow adapter 40 'is fixed to the outer surface 40b' of the adapter 40 '.

FIG. 12 shows an example of use of the screw driving device having the driving position guide adapter 40 'constructed as described above. The member to be driven is a special shape steel 76 similar to that shown in FIG.
7 through the opening 79, and the front end portion 43 'into the inner bottom surface 7
Screwing work can be done easily while it is pressed against 8,
A drill screw S can be driven into the screwed-in portion C of the inner bottom surface 78 to be screwed.

[0022]

As described above, according to the driving position guide adapter of the present invention, even if the screwed portion of the driven member is in the limited space such as the inner bottom surface of the groove, the predetermined position is maintained. The screw can be driven easily and quickly. Therefore, the adapter of the present invention is most suitable for a screw driving device that screw-connects various grooved steels used for a frame material of a steel frame construction method and a prefabricated construction method.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a screw driving device including a driving position guide adapter according to the present invention.

FIG. 2 is a plan view of the screw driving device.

FIG. 3 is a front view of a tip portion of the screw driving device.

FIG. 4 is a sectional view taken along the line 4-4 of FIG.

5 is an enlarged sectional view taken along line 5-5 of FIG.

FIG. 6 is a rear view of the sliding member.

FIG. 7 is an enlarged cross-sectional view showing a mounting structure of an adjusting rod.

FIG. 8 is a view taken along line 8-8 of FIG.

FIG. 9 is a perspective view of a driving position guide adapter according to the present invention.

FIG. 10 is a cross-sectional view of essential parts showing a usage example of the screw driving device including the same adapter.

FIG. 11 is a perspective view showing another embodiment of the driving position guide adapter according to the present invention.

FIG. 12 is a cross-sectional view of essential parts showing a usage example of the screw driving device including the same adapter.

FIG. 13 is an explanatory view of a C-shaped steel to be used by the driving position guide adapter according to the present invention.

FIG. 14 is an explanatory view of a channel steel to be used by the driving position guide adapter according to the present invention.

[Explanation of symbols]

1 tubular casing 2 Sliding member 5 Return spring 7 driver bits 8-bit insertion hole 9 guidance passage 11 Sliding member body 11a front end face of main body 12 cover body 13 Sides 16 engagement groove 20 Screw holding belt feeding mechanism 40,40 'Drive position guide adapter 41, 41 'support 42 Intermediate stage 43, 43 'tip 44,44 'mounting holes 46 setscrew 47 Mounting plate piece 48 through holes 49 Reinforcing rib

Claims (5)

[Claims] 1. A tubular casing attached to a tip portion of a driver tool, a sliding member slidably inserted into the casing via a return spring, and a screw holding member provided on the sliding member. A screw holding belt feeding mechanism for feeding the belt by one pitch of the screw holding interval, and the screw held by the screw holding belt and sent to the driving position by the driver bit mounted on the driver tool is fed to the driven member. In the screw driving device for driving, the screwing portion of the driven member is inside the groove portion having a predetermined depth, and the driving position guide adapter provided so as to project to the front end surface of the sliding member is formed into a flat plate shape by a metal plate. A driving position suggestion adapter for a screw driving device, which is formed and has a protruding length from the front end face set corresponding to the predetermined depth. 2. The inner surface of the driving position guide adapter (the surface facing the driver bit) is arranged in proximity to the screw driven into engagement with the driver bit. A driving position guide adapter for a screw driving device. 3. The driven member is C-shaped steel, the screwed portion is on the inner bottom surface near the bent edge of the C-shaped steel, and the outer surface of the driving position guide adapter (opposed to the driver bit). The driving position guide adapter for the screw driving device according to claim 1 or 2, wherein a rear surface of a surface to be driven is brought into contact with the bent edge to guide the positioning. 4. The driven member is a shaped steel having a narrow groove portion, the screwed portion is on the inner bottom surface of the groove portion, and the driving position guide adapter has a lateral width slightly smaller than the groove width of the groove portion. The driving position guide adapter of the screw driving device according to claim 1 or 2, which is formed on the. 5. The driving position guide adapter for a screw driving device according to claim 4, wherein a reinforcing rib is provided on an outer surface of the driving position guide adapter (a rear surface of a surface facing the driver bit).