JPH04372373A - Screw band of automatic screw driving device - Google Patents

Abstract

PURPOSE:To provide a screw band with which a screw head is easily removed from a band material, and which can be used for various types of screws of different screw head diameters when screws held in the band material are to be continuously supplied to an automatic screw driving device. CONSTITUTION:Sending grooves 2 for having tooth of a ratchet gear for sending the screw band of an automatic screw driving device engaged with each other, are notched at a certain pitch on both sides of an elastic band material 1, and screw inserting holes 4 are formed at equal interval in the longitudinal direction of the surface part of the band material 1. In a screw band on the under surface of the band maternal, where a cylindrical lip 5 for holding a head part 3b of a screw 3 inserted in the screw inserting hole 4 is provided protrusively in a concentric manner with the screw inserting hole 4, a fan-shaped notch hole 6 of wider rim, whose starting end is the screw inserting hole 4, and which is extended outside is radially provided on the peripheral part of the screw inserting hole 4 of a band material surface part, while a slit 9, which is continued from the notch hoele 6, and which divides the cylindrical lip 5 at least into two parts, is notched on the cylindrical rip 5 in the screw inserting direction.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a screw band for continuously supplying screws held in a band material to an automatic screwdriver. This invention relates to a screw band for an automatic screwdriver that can be applied to multiple types of screws.

0002

[Prior Art] In order to enable continuous driving of screws, automatic screwdrivers load a screwband holding a plurality of screws at equal intervals into the screwdriver. This makes it possible to continuously supply screws.

[0003] In conventional threaded bands, screw insertion holes are drilled at regular intervals in a flexible band, and a cylindrical lip for holding screws is provided on the bottom surface of the band to protrude continuously from the screw insertion holes. has been done. Further, slits are radially carved on the peripheral edge of the screw insertion hole.

0004

[Problem to be Solved by the Invention] In such a conventional screw band, slits are formed radially in order to facilitate the removal of the screw held in the screw insertion hole when driving the screw with an automatic screwdriver. However, there was a problem in that the screw neck was held down by the cylindrical lip, making it difficult for the screw to come out. In particular, if the screw head is a large diameter screw, the screw may become more difficult to pull out, resulting in poor driving of the screw.

The present invention has been proposed in order to solve the problems of the conventional technology, and provides an automatic screw that can be easily driven out even when the screw head has a large diameter, and can drive screws well. The purpose of the present invention is to provide a screw band for a hammer.

[0006]

[Means for Solving the Problems] In order to achieve this object, the present invention provides predetermined feed grooves on both sides of a flexible band material, in which the teeth of a ratchet wheel for feeding a screw band of an automatic screw driver engage. Screw insertion holes are drilled at equal intervals in the longitudinal direction of the surface of this strip material, radial slits are cut out on the periphery of the screw insertion holes, and slits are cut out in a radial manner on the periphery of the screw insertion holes. , in a screw band in which a cylindrical lip that holds the head of a screw inserted into the screw insertion hole protrudes concentrically with the screw insertion hole, the cylindrical lip has a cylindrical lip that is continuous with the slit and has a cylindrical lip that holds the head of a screw inserted into the screw insertion hole; It has a structure in which a slit is cut out in the screw insertion direction to divide the shaped lip into at least two parts.

Further, the threaded band of the present invention has radially extending fan-shaped notches extending outward from the screw insertion hole at the peripheral edge of the screw insertion hole in the surface of the band material. The cylindrical lip has a slit cut out in the screw insertion direction, which is continuous with the notch hole and divides the cylindrical lip into at least two halves.

[0008]

[Operation] According to the structure corresponding to claim 1, since the slit is formed in the cylindrical lip, when the screw is separated from the screw band, uneven clamping force is not applied to the screw, and the screw is inserted into the screw band. It becomes easy to come out from the hole.

[0009] According to the structure corresponding to claim 2, fan-shaped notch holes are radially bored at the peripheral edge of the screw insertion hole, and slits continuous with the notch holes are formed in the cylindrical lip. Therefore, the screw can be pulled out from the screw insertion hole even more easily, and the screw head can be applied to a screw having a large diameter.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of a screw band for an automatic screwdriver according to the present invention will be described in detail below with reference to the drawings. The perspective view of FIG. 1 shows an embodiment of this threaded band.

In this figure, a flexible strip 1 is made of a synthetic resin material such as polyproethylene, and on both sides of the strip 1 there are screws that engage ratchet wheels of an automatic screwdriver.
Feed grooves 2 for intermittently feeding the strip material 1 one pitch at a time are cut out in the longitudinal direction at predetermined pitches. Screw insertion holes 4 for inserting and holding screws 3 are bored at equal intervals between the front and rear feed grooves 2 in the longitudinal direction. This screw insertion hole 4 is bored as a round hole in the center of the width direction of the strip material 1 as shown in FIG. A cylindrical lip 5 concentrically continuous with the hole 4 is integrally protruded. The neck 3b of the screw 3 inserted into the screw insertion hole 4 is held by this cylindrical lip 5.

[0012] On the upper surface of the band material 1, cut-out holes 6 that are continuous with the screw insertion holes 4 are provided radially protruding from the peripheral edge of the screw insertion holes 4. As shown in an enlarged view in FIG. 3, this notch hole 6 is cut out in an outwardly expanding fan shape that extends outward from the screw insertion hole 4 as the starting end. The outer end has a semicircular notch 8. In this embodiment, four notch holes 6 are formed in an X-shape at approximately equal angles with the screw insertion hole 4 as the center.

As shown in FIGS. 4 and 5, a slit 9 is cut out in the wall of the cylindrical lip 5 and is continuous with the X-shaped cutout hole 6. In this example, the slit 9
is formed into an X-shape by dividing the cylindrical lip 5 into four, but it may also be formed by dividing the cylindrical lip 5 into two so as to be continuous with the diagonally opposing notch holes 6. . Moreover, each slit 9 is an inverted V-shaped notch extending from the lower edge of the cylindrical lip 5 toward the upper base.

The screw band A with the screws 3 inserted into the respective screw insertion holes 4 is loaded so that the feed grooves 2 are engaged with the feed teeth 12 of the ratchet wheel 11 of the automatic screwdriver 10, as shown in FIG. . During this pushing operation of the screwdriver 10, the screw band A is fed one pitch at a time, the screw 3 is fed under the rotating driver bit 13, and then the screw band A is fed under the rotating driver bit 13.
3 is pushed in, the tip of the driver bit 13 engages with the head 3a of the screw 3, and the screw 3 separated from the screw band A is driven into the member to be fastened.

In this thread band A, a slit 9 is formed in the cylindrical lip 5, and this slit 9 has an inverted V shape.
Since the cutout is in the shape of a letter, and the notch hole 6 is formed radially around the periphery of the screw insertion hole 4, the head 3a of the screw 3 driven into the fastened member is aligned with the screw insertion hole 4 in a cylindrical shape. When passing through the shaped lip 5, the screw 3 is not subjected to an unbalanced load, and the screw 3 can be easily separated from the thread band A and driven into the member to be fastened. Therefore, there is no problem even if the screw head 3a has a large diameter.

Next, other embodiments of threaded bands shown in FIGS. 7 to 21 will be explained. The configuration of these threaded bands is similar to the threaded band shown in FIG. 1 except that the planar shape is different. First, in the threaded band shown in FIG. 7, the outer end of the notch hole 14 having the fan-shaped notch part 7 is not provided with a semicircular notch part.
An arcuate notch 15 with a somewhat large radius is formed. As shown in FIGS. 8 and 9, the cylindrical lip 5 includes
A slit 9 continuous to the notch hole 14 is formed.

In the threaded band shown in FIG.
A protruding notch 17 is formed at the outer end of the cylindrical lip 5, and a slit 9 continuous to the notch hole 16 is formed in the cylindrical lip 5, as shown in FIGS. 11 and 12.

In the threaded band shown in FIG. 13, the notch hole 18
has only a sector-shaped notch 7. As shown in FIGS. 14 and 15, the cylindrical lip 5 includes
A slit 9 continuous to the notch hole 18 is formed.

Furthermore, in the threaded band shown in FIG. 16, an X-shaped slit 19 is cut in the periphery of the screw insertion hole 4 instead of making a cutout hole, and a screw thread is formed in the width direction of the threaded band. A slit 20 continuous to the insertion hole 4 is formed. A slit 9 is formed in the cylindrical lip 5, as shown in FIGS. 17 and 18, which is continuous with a slit 19 in the plane portion.

The threaded band shown in FIG. 19 is different from the threaded band shown in FIG. 16 in that a slit 21 continuous with the screw insertion hole 4 is also formed in the longitudinal direction of the threaded band. The cylindrical lip 5 is formed with a slit 9 that is continuous with the slit 19, as shown in FIGS. 20 and 21. In addition, Fig. 16 and Fig. 1
9, insert the slits 20 and 21 into the screw insertion hole 4.
It does not have to be consecutive.

[0021]

As explained above, according to the present invention, notched holes continuous to the screw insertion hole are radially bored around the screw insertion hole, and a cylindrical lip portion for holding the neck of the screw is formed. Since a slit is formed that is continuous with the notch hole, the head of the screw can easily come out from the screw band, and the screw can be driven into the fastened member using an automatic screw driver. It can also be used to hold multiple types of screws with different diameters.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of a threaded band according to the present invention.

[Fig. 2] (a) is a plan view of the threaded band in Fig. 1, and (b)
is its side view.

FIG. 3 is an enlarged plan view of the threaded band in FIG. 1;

FIG. 4 is a sectional view taken along line AA in FIG. 3;

FIG. 5 is a sectional view taken along line BB in FIG. 3;

FIG. 6 is a sectional view showing a state in which a screw band is loaded into an automatic screw driver.

FIG. 7 is a plan view showing an enlarged screw band of another embodiment.

8 is a sectional view taken along line CC in FIG. 8. FIG.

9 is a sectional view taken along line DD in FIG. 8. FIG.

FIG. 10 is a plan view showing an enlarged screw band of still another embodiment.

FIG. 11 is a sectional view taken along line E-E in FIG. 10;

FIG. 12 is a sectional view taken along line FF in FIG. 10;

FIG. 13 is a plan view showing an enlarged screw band of still another embodiment.

14 is a sectional view taken along line GG in FIG. 13. FIG.

15 is a cross-sectional view taken along line H-H in FIG. 13. FIG.

FIG. 16 is a plan view showing an enlarged screw band of still another embodiment.

FIG. 17 is a sectional view taken along the line II in FIG. 16;

18 is a sectional view taken along line JJ in FIG. 16. FIG.

FIG. 19 is a plan view showing an enlarged screw band of still another embodiment.

20 is a sectional view taken along the line K-K in FIG. 19;

FIG. 21 is a sectional view taken along line LL in FIG. 19;

[Explanation of symbols]

A Screw band 1 Band material 2 Feed groove 3 Screw 3a Screw head 3b Screw neck 4 Screw insertion hole 5 Cylindrical lip 6, 14, 16, 18 Notch hole 9 Slit 10 Automatic screwdriver 11 Ratchet wheel 12 Feed dog 13 Driver bit 19 Slit 20, 21 slit

Claims (2)

[Claims] [Claim 1] Feed grooves are cut out at a predetermined pitch on both sides of a flexible strip material, in which the teeth of a ratchet wheel for feeding the screw strip of an automatic screwdriver engage, and the feed grooves are cut out at a predetermined pitch on both sides of the flexible strip material, and the feed grooves are cut out at a predetermined pitch on both sides of the flexible strip material. Screw insertion holes are drilled at equal intervals, slits are cut radially around the periphery of the screw insertion holes, and a cylindrical shape is provided on the lower surface of the band material to hold the screws inserted into the screw insertion holes. In the threaded band in which the lip protrudes concentrically with the screw insertion hole, the cylindrical lip has a slit cut out in the screw insertion direction that is continuous with the slit and divides the cylindrical lip into at least two parts. Features a screw band for an automatic screwdriver. [Claim 2] Feed grooves are cut out at a predetermined pitch on both sides of the flexible strip material, in which the teeth of a ratchet wheel for feeding the screw strip of an automatic screwdriver engage, and the feed grooves are cut out at a predetermined pitch on both sides of the flexible strip material, and the feed grooves are cut out at a predetermined pitch on both sides of the flexible strip material. Screw insertion holes are drilled at equal intervals in the screw band, and a cylindrical lip for holding screws inserted into the screw insertion holes protrudes concentrically with the screw insertion holes on the lower surface of the band. ,
A sector-shaped notch hole extending outward from the screw insertion hole as a starting end is radially bored at the peripheral edge of the screw insertion hole in the band member, and the cylindrical lip is A screw band for an automatic screwdriver, characterized in that a slit is cut out in the screw insertion direction, continuous with the notch hole and dividing the cylindrical lip into at least two halves.