JPS5925891B2 - Tooth feed mechanism and its applied equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tooth feeding mechanism and equipment applied thereto.

In the conventional tooth feeding mechanism, especially its switching mechanism, a switching actuation piece with a pawl that engages with the teeth is installed in a through hole drilled in the neck of the handle body, and a ball is inserted from the rear side of the actuation piece by a spring. There are many things that need to be pressed, but not only does the neck of the handle body become weak due to the through hole, but the long hole to accommodate the ball spring must be drilled from the head of the handle body with a long drill, making it difficult to find the correct position. It takes a lot of effort to open the
There were also many broken drills.

To improve the latter point, a pivot with a triangular surface on the rear side is provided in an oval hole in the center of the actuating piece, similar to the tooth feed mechanism of a ratchet wrench, and the ball is held against this triangular surface by a spring. It is known that the ball spring is housed in a housing hole drilled horizontally in the actuating piece for pressure contact, but since the actuating piece is installed in a through hole drilled in the head of the handle body,
The strength of the handle body is still low, and the gear feeding direction must be changed by rotating the actuating piece itself left and right, which is easily contaminated with oil, and furthermore, the claw portion of the actuating piece cannot be completely removed from the teeth.

The present invention has been devised in view of the above, and has a rotating fulcrum at the center of an operating member having claws formed on both wings, and an operating hole on the opposite side of the claw from the fulcrum on the center line of the member passing through the center. A tooth feeding mechanism in which a switching bundle is rotatably raised in the hole and a ball is pressed against the inner wall of the operating hole by a spring fitted to the bundle, and a ratchet incorporating the tooth feeding mechanism. With a wrench, a cylindrical member with a flange with a screw hole in the center and a tooth row formed on the outer periphery is rotatably supported on the base, a lead screw is screwed into the screw hole, and the tooth row is formed on the outer periphery. and a jack in which the tooth feeding mechanism is built into a bundle body that is fitted so as to surround the gear.

To explain this in detail with the drawings, Fig. 1 is a plan view showing the tooth feeding mechanism of the present invention, and numeral 1 is an actuating member with pawls 2 and 3 formed on both wings, and on its center line Drill a circular hole 4 in the center, insert the shaft (bolt described below) 5 to center the rotation, and insert the circular hole 4 from the circular hole 4 on the opposite side of the pawl 2°3 on the center line XX. An operating hole 6, which is slightly larger than the hole 4, is drilled, and the switching bundle 7 is rotatably erected therein so as to be on the center line XX.

A horizontal hole 8 is bored in the switching bundle 7 within the operating hole 6, into which a spring 10 is fitted so as to press the ball 9 against the inner wall of the operating hole 6.

Reference numeral 11 denotes a tooth member having a tooth row 12 formed on its outer periphery, and when the actuating member 1 is tilted to the right or left in FIG.
Although the claws 2 and 3 mesh with one of the rows of teeth 12 of the tooth member 11, the claws 2 and 3 are disposed in such a position that neither of the claws 2, 3 mesh with any of the rows of teeth 12 at the horizontal end.

In such a tooth feeding mechanism of the present invention, when the switching bundle 7 is rotated to the left and placed at the position A shown by the solid line in FIG. Therefore, the actuating member 1 rotates to the right about the shaft 5, and the pawl 2 engages one tooth row 12 of the tooth member 11 as shown by the solid line.

Therefore, as will be described later, the actuating member 1,
If the shaft 5, the switching bundle 7, etc. are rotated integrally to the right, the tooth member 11 can be rotated clockwise by the pawl 2 of the actuating member 1.

Also, when rotating the switching bundle 7 to the right to position B indicated by the two-dot chain line, the ball 9 is rotated by the spring 10 in the same manner as described above.
The inner wall of the operating hole 6 is pushed to the right through the actuating member 1, so the operating member 1 rotates to the left about the shaft 5, and the pawl 3 meshes with one of the tooth rows 12 of the tooth member 11 as shown by the dashed line. .

Therefore, if the actuating member 1 etc. are integrally rotated in the opposite direction as described above, the tooth member 11 can be rotated in the same direction via the pawl 3.

Furthermore, before setting the switching bundle 7 to the position C indicated by the dotted line,
Since the force pushing the actuating member 1 by the spring 10 is directed on the center line X-X, the actuating member 1 is not tilted and neither of the pawls 2, 3 engages with the tooth row 12 of the tooth member 11, so that the tooth feed Both the mechanism and tooth members are free.

Figures 2 to 5 show a cable jack to which the tooth feed mechanism of the present invention is applied. In these figures, reference numeral 21 is a base having a bearing 22 at its upper end, and on this base there is a screw hole 23 in the center. A cylindrical member 26 having a flange 25 with a tooth row 24 formed on its upper outer periphery is supported.

A circumferential groove 27 is provided below the flange 25 of the cylindrical member 26.
A bolt 28 is screwed into the side wall of the base 21 to prevent it from being removed, and a lead screw 30 with a support plate 29 cut at the upper end is screwed into the screw hole 23. A key 3 welded inside the base 21 in a key groove 31 formed in the
Fit 2 to prevent rotation.

33 is a bundle body, the head 34 of which has the above-mentioned cylindrical member 2.
A window hole 35 surrounding the tooth row 24 of No. 6 is made and fitted into the tooth row 24, and the ring member 36 is attached to the cylindrical member 2 with a bolt 37.
It is tightened to the upper end of 6 to prevent it from coming out.

Note that 38 is a seal ring.

As shown in the figure, the tooth feeding mechanism according to the present invention has a bundle body 3.
The shaft 5 shown in FIG. 1 passes through the bundle body 33 vertically as a bolt 41, and a nut 42 is screwed into the lower end. It is inserted and fixed.

Further, the switching bundle 7 also vertically penetrates the bundle body 33, and a nut 43 is screwed into the lower end thereof, so that the switching bundle 7 is rotatably prevented from being removed.

In use, for example, when a cable is placed on the support plate 29 and raised, or when the support plate 29 is
9 is raised to bring it closer to the cable, if the switching bundle 7 is placed in the position shown in FIG. When pushed downward, the actuating member 1 rotates clockwise around the bolt 41, and the pawl 2 engages with the tooth row 24 of the cylindrical member 26. Therefore, the connecting rod ( (not shown) is screwed in and rotated in the direction of the arrow, the cylindrical member 26 is rotated clockwise.

When the bundle body 33 is returned in the direction opposite to the arrow after being rotated by an appropriate angle, the pawl 2 of the actuating member 1 returns while contacting the tips and bottoms of the teeth in the returning direction one after another, and the rollers are returned to the desired extent. When the bundle body 33 is rotated again in the direction of the arrow, the cylindrical member 26 is rotated clockwise again.

Since this cylindrical member 26 has a lock against removal, the lead screw 30 that is threaded into this screw hole 23 is raised by rotation in the clockwise direction.

Incidentally, when returning the bundle body 33, the spring 10 only expands and contracts, and the switching bundle 7 is not moved.

Conversely, when lowering the cable, move the switching bundle 7 to the fourth
By positioning the spring 10 as shown, the force of the spring 10 is reduced to the ball 9.
The actuating member 1 is tilted counterclockwise around the bolt 41 through the screw 41, and the pawl 3 is engaged with the tooth row 24 of the cylindrical member 26.

Therefore, if the bundle body 33 is rotated in the direction of the arrow via the connecting rod, returned once, and then rotated again in the direction of the arrow as described above, the cylindrical member 26 will be rotated counterclockwise, and the screw hole will be rotated. This is when the lead screw 30 which is threadedly engaged with the screw 23 is lowered.

When there is nothing on the support plate 29, if you want to quickly raise or lower the lead screw 30, set the switching bundle 7 so that it is parallel to the axis of the bundle body 33.
3 separates from the tooth row 24 and becomes free, so the cylindrical member 2
6 can be rotated freely by hand, and the lead screw 30 can be moved up and down quickly.

FIG. 6 shows a ratchet wrench to which the tooth feeding mechanism of the present invention is applied. This ratchet wrench has a bolt head fitting hole 54 on the inner periphery in a window hole 53 made in the head 52 of the bundle body 51, and a bolt head fitting hole 54 on the outer periphery. A rotary tooth wheel 56 having a row of teeth 55 engraved thereon is attached with an appropriate stopper, and in order to rotate the rotary tooth wheel 56, the head 52 and body portion 57 of the bundle body 51 are attached. Both of the above-mentioned feeding mechanisms are housed in a chamber 58 formed in the middle.

In use, with the switching bundle 7 in the position shown in FIG. 1C or in the position shown in FIG. When the switching bundle 7 is placed in the position shown in FIG. 6, the actuating member 1 is rotated to the right by the action described above, and the pawls 2 engage with the tooth row 55.

Therefore, by holding the body 57 of the bundle body 51 and rotating it clockwise, the bolt or nut is tightened.

At this time, as described above, the bolts and the like can be tightened by repeating the operation of returning the bundle body 51 counterclockwise and rotating it clockwise again.

As described above, in the tooth feeding mechanism of the present invention, the pawls 2 and 3 are provided on both wings.
The center of the actuating member 1 formed with the above-mentioned fulcrum is used as a pivot point, and an actuating hole 6 is bored on the opposite side of the pawl from the above-mentioned fulcrum on the center line of the member passing through the center line, and the switching bundle 7 can be freely rotated within the hole. The ball 9 is pressed against the inner wall of the operating hole by the spring 10 fitted to the bundle, so that the actuating piece with the claw and the triangular part of the actuating piece behind the actuating piece The actuating piece, whose flat rear side is pressed by a ball via a spring, has a simpler and more compact structure than one with a separate pressing mechanism, so it only takes up a small space. It can also be used for mechanical parts that cannot be completely removed.

In addition, even if the switching bundle is rotated 360° in the forward and reverse directions, the suppression member (ball) may come off from the actuating piece with the pawl, or the pawl or the gears that mesh with it may be damaged. There is no possibility that the predetermined position, that is, the center line
-X and the positions A and B perpendicular to this can be rotated in either the forward or reverse direction, which provides various advantages such as easy operation and reliable operation.

When the switching bundle 7 rotates left and right, the spring 1
The force of pushing the inner wall of the working hole through the ball 9 by the ball 9 acts on the diameter of the working hole 6 and at right angles to the center line X-X of the working member 1. The operation of bringing the teeth into contact with the tooth row 12 can be performed reliably.

Of course, the point of contact between the ball 9 and the operating hole 6 is the dead center, so even if the operating member 1 is rotated in the opposite direction to some extent in addition to the operation of the switching bundle 7 (for example, if the pawls 2 and 3 pass over the tooth row 12) The pawls 2 and 3 of the actuating member 1 do not come off the tooth row 12 (before being returned, etc.).

The ratchet wrench of the present invention employing the above tooth feeding mechanism,
In the Jatsuki, the external tooth feeding mechanism with the above effect is arranged in the chambers 40, 58 inside the bundle body 33.51, so unlike the conventional Jatsuki, the bundle can be easily moved by providing holes penetrating left and right in the neck of the bundle body. There is no weakening of the strength near the neck of the body, and no staining of the operating member 1 or the like.

Further, in the jack of the present invention, since a bearing is provided at the upper end of the base, there is an effect that the rotation of the cylindrical member is extremely light.

[Brief explanation of drawings]

FIG. 1 is a plan view of the tooth feeding mechanism of the present invention, and FIGS.
The figures show the jack of the present invention, Fig. 2 is a longitudinal sectional view, Figs. 3 to 5 are cross-sectional views corresponding to the Y-Y line in Fig. 2, showing the switching state, and Fig. 6 is a ratchet wrench of the invention. And the third
FIG. 5 is a diagram corresponding to FIGS. 1... Operating member, 2; 3... Claw, 5.
...Shaft, 6...Operating hole, 7...
Switching bundle, 9...Ball, 10...
...Spring, 11...Tooth member, 12...
tooth row, 21...base, 22...bearing,
23... Screw hole, 24... Teeth row, 25
...Flange, 26...Cylindrical member, 2
7... Circumferential groove, 28... Bolt, 29
...Support plate, 30...Lead screw,
31...Keyway, 32...Key, 33
, 51... Bundle body, 34, 52...
・Head, 35,53... Alumni hole, 39.57・
...Same body, 40,58...Same room, 36
...Ring member, 37 ...Bolt, 3
8...Seal ring, 41...Bolt, 42, 43...Nut, 44...Connection screw hole, 54...Bolt head Fitting hole, 55...
...Tooth row, 56...Rotating tooth wheel.

Claims (1)

[Scope of Claims] 1. An actuating member having pawls formed on both wings is rotatably supported at its center, and an actuating hole is formed on the center line of the actuating member on the opposite side of the pawl from the rotational fulcrum. A tooth feeding mechanism characterized in that a switching handle is rotatably erected in the hole so as to be on the center line, and a ball is pressed against the inner wall of the operating hole by a spring fitted to the handle. 2 Into the window hole drilled in the head of the handle body, a bolt head fitting hole is provided on the inner periphery and a rotating gear ring with teeth cut on the outer periphery is installed to prevent removal, and the rotating gear ring is In order to rotate, the center of an operating member with claws formed on both wings is rotatably supported in a chamber formed between the head and body of the handle body, and the rotation fulcrum is located on the center line of the operating member. An operating hole is formed on the opposite side of the claw, a switching handle is rotatably erected within the hole so as to be on the center line, and a spring fitted in the handle presses the ball against the inner wall of the operating hole. A ratchet wrench characterized by being equipped with a tooth feed mechanism. 3. A bearing mechanism that rotates in the horizontal direction is provided at the upper end of the base, and supports a cylindrical member with a flange, which has a screw hole in the center and a tooth row formed on the outer periphery of the upper part, such that it can rotate freely but cannot be removed. A lead screw with a support plate cut out at the upper end is screwed into the screw hole, and a window hole is made in the head of the handle body so as to surround the lead screw, and the cylindrical member is fitted into the screw hole. In order to rotate the handle body, the center of an actuating member having claws formed on both wings is rotatably supported in a chamber formed between the head and body of the handle body, and the rotating member is rotated on the center line of the actuating member. An operating hole is formed on the opposite side of the pawl from the moving fulcrum, a switching handle is rotatably erected within the hole so as to be on the center line, and a spring fitted to the handle causes the ball to move against the inner wall of the operating hole. A jack characterized in that a tooth feeding mechanism formed by pressing the tooth is arranged so as to engage with the tooth row.