JPH07241778A - Claw seat locking lever and ratchet spanner with claw seat locking lever - Google Patents

Abstract

PURPOSE:To provide a ratchet spanner having a claw seat locking lever enabling the easy fitting and removal of the ploughing claw of a rotary hoe or the like. CONSTITUTION:An arm part 2 is extended from a U-shape part 1, and the tip part of this arm part 2 is formed into a grip part 3. The nearly center part of the center face part 1a of the U-shape part 1 is provided with a through hole with a diameter related to a nut screwed with a claw fixing bolt, and the intermediate part of the arm part 2 is appropriately bent onto the same side as the bent side of the side face part 1b of the U-shape part 1, thus forming a claw seat locking lever. This claw seat locking lever is engagedly fixed to one side projecting part of a ring member 5, rotatory-fed by ratchet mechanism, in such a way as to be oscillated around the ring member 5 through the through hole of the U-shape part, and the tip side place of a spanner body part 4a is provided with a rotating handle 7 for rotating the ring member 5 interlockingly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pawl seat locking lever and a ratchet spanner with a pawl seat locking lever, which is used when attaching and detaching a plowing pawl of a pawl shaft.

[0002]

2. Description of the Related Art Conventionally, when exchanging a tiller claw of a rotary mounted on a tractor, the rotary mechanism is raised by a hydraulic mechanism, and the tiller clutch is made neutral so that the tiller shaft is idle, and then the tiller shaft is rotated. A wrench or the like is used to loosen or tighten the bolt B nut N to which the plowing claw A is fastened, as shown in FIG. 6, while manually rotating as necessary.

[0003]

When the wrench (including the ratchet wrench) is simply used as described above, when the wrench hung on the nut is oscillated, the tiller shaft also rotates together. Therefore, in order to prevent this, it is necessary to operate the spanner after supporting the tilling claws with legs etc. and keeping the rotation of the tilling shaft blocked.
Such handling is extremely troublesome due to the large number of nails.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pawl seat locking lever and a ratchet spanner with a pawl seat locking lever that can solve such problems.

[0005]

In order to achieve the above object, the pawl seat locking lever of the present invention has an arm portion extending from a U-shaped portion which is engaged with the pawl seat of the pawl shaft, and the arm. The tip part of the part is used as a grip part, and this U-shaped part is provided with a through hole having a diameter related to the nut screwed with the pawl fixing bolt at approximately the center part of the central surface part, and the arm part. Is characterized in that the middle thereof is appropriately bent to the same side as the bending side of the side surface of the U-shaped part.

In the use of the product of the present invention, the through hole is externally fitted to the nut for fastening the tilling claw, the central surface portion and the side surface portion of the U-shaped portion are positioned so as to hold the periphery of the nail seat, and the arm portion is By rotating the cultivating shaft and moving the nail seat,
The gripping portion is held in a fixed position by being grasped by the operator's hand and oriented in a direction around the claw shaft that is easy to operate. As a result, the pawl seat of the cultivating shaft is held at a proper fixed position, which facilitates the use of the spanner.

Further, the ratchet spanner with a pawl seat locking lever of the present invention is provided on a protruding portion on one side of a ring member which is engaged with a nut for fastening a pawl shaft and is rotationally fed in a fixed direction by a ratchet mechanism. It is characterized in that the above-mentioned pawl seat locking lever is swingably attached around the ring member through a through hole of a U-shaped portion.

Also in this invention, the pawl seat locking lever is used in accordance with the above. Then, when the lever is in use, the ring member is inevitably engaged with the nut for fastening the pawl shaft, which makes it easier to attach and detach the tilling pawl.

Further, in the ratchet spanner with the pawl seat locking lever, it is preferable to provide a rotating handle for interlocking rotation of the ring member at a position near the tip of the wrench body.

According to this, when the rotary handle is released from the tightened state on the claw fixing bolt and the loosened nut is removed from the bolt, the rotating operation of the nut is facilitated and the nut is used as the claw fixing bolt. The nut can be easily rotated when screwed into a tightened state.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below with reference to FIGS. In this case, substantially the same parts are denoted by the same reference numerals in all the drawings.

FIG. 1 shows an embodiment of a pawl seat locking lever according to the present invention. In FIG. 1 (a), 1 is a central surface portion 1a.
And a side surface portion 1b, 1b, which is a U-shaped portion, and a through hole n having an appropriate diameter is provided at a substantially central portion of the central surface portion 1a.

An arm portion 2 extends from the U-shaped portion 1 to an appropriate length, and a tip portion of the arm portion 2 is a grip portion 3. In consideration of the convenience of use, the arm portion 2 has a side portion 1 of the U-shaped portion 1 in the middle thereof.
b, 1b are appropriately bent to the same side as the bent side. Further, although the grip portion 3 is formed as a member different from the arm portion 2, the arm portion 2 may be simply extended.

The relationship between the U-shaped portion 1 and the arm portion 2 can be appropriately changed. For example, as shown in FIG. 2B, the arm portion 2 is provided from the outer surface side of the side surface portion 1b of the U-shaped portion 1. May be extended.

FIG. 2 shows an embodiment of a ratchet spanner with a pawl seat locking lever according to the present invention, which comprises a ratchet spanner 4 and a pawl seat locking lever shown in FIG. 1 (a). .

The ratchet spanner 4 may be any suitable one, but in the present embodiment, a ring member 5 mounted on the base end of the spanner body 4a and rotated and fed in a fixed direction by a ratchet mechanism (not shown). A switching lever (which may be similar to an existing one) 6 for switching the rotational feed direction of the member 5 between forward and reverse, and a ring member 5
Is provided with a rotary handle 7 for rotating the gear through a suitable transmission mechanism such as a toothed belt b (see FIG. 3) (the application of the present application is proposed by the applicant as a matter equivalent thereto). There is No. 5-25209). At this time, g is the central axis of rotation of the rotary handle 7.

As shown in FIG. 3, the ring member 5 is formed such that the protruding portion 5a on one side thereof is formed in a small diameter portion, and the pawl seat locking lever has a U-shaped portion in this small diameter portion. The through hole n of No. 1 is externally fitted and the snap ring 8 is elastically fitted in the ring groove formed in the same small diameter portion so that the ring member 5 can be swingably fitted around the ring member 5. is there.

The ratchet spanner with a pawl seat locking lever according to the present invention is replaced with the ratchet spanner shown in FIG. 4, and the ratchet spanner 4 shown in FIG. 4 is equipped with the pawl seat locking lever shown in FIG. 1 (b). There is no problem even if it becomes a thing. At this time
The structure around the ring member 5 is as shown in FIG.

Explaining an example of use of the ratchet spanner with the pawl seat locking lever constructed as described above, the operator holds the ring member 5 to the pawl fixing bolt B by holding the spanner main body 4a as shown in FIG. 3 and 5, the U-shaped portion 1 of the pawl seat locking lever is fitted to the pawl seat C as shown in FIG. 3 or 5, and then the grip portion 3 is held by one hand. The position of the seat locking lever is held at an appropriate angle position, and the other hand holds and holds the gripping portion forming the tip end side of the wrench body 4a. At this time, since the pawl seat locking lever blocks the rotational movement of the pawl shaft D, the nut N can be loosened relatively easily by the effective swinging action of the ratchet spanner 4. Nut N loosened in this way
Is efficiently rotated by rotating the rotary handle 7 and quickly removed from the pawl fixing bolt B.

On the other hand, the removed nut N is attached to the nail fixing bolt B.
When the bolt N is fastened, the ring member 5 whose rotation feed direction is switched by the switching operation of the switching lever 6 is fitted onto the nut N after the nut B is hung on the bolt B, and the rotary handle 7 is rotated. Efficiently and initially tighten the nut N, and thereafter, the U-shaped portion 1 of the pawl seat locking lever is fitted to the pawl seat C as shown in FIG. 3 or 5, and the grip portion 3 is held by one hand. By holding it, the position of the pawl seat locking lever is held at an appropriate fixed angle position, and the other hand holds the grip portion of the spanner main body portion 4a and swings it. At this time, the pawl seat locking lever blocks the rotational movement of the pawl shaft D as described above, so that the nut N is relatively easily fastened by the effective swinging action of the ratchet spanner 4.

In the ratchet spanner with the pawl seat locking lever, the ratchet spanner 4 is the same as in Japanese Patent Application No. 5-25209, that is, the ring member 5 is rotated and fed only in a fixed direction in which the forward / reverse switching is not possible. It does not matter if there is,
In this case, it is necessary to separately prepare one for fastening the nut N and one for loosening the nut, and its use must use different spanners for the fastening operation and the loosening operation. Except for the above, it is carried out according to the above.

In the ratchet spanner with the pawl seat locking lever according to the present invention, the ratchet spanner 4 is an existing one (the rotary handle 7 does not exist) whose rotation feed direction of the ring member 5 can be switched between forward and reverse. None, it may be one in which a pawl seat locking lever is attached, and in this case, the nut N is efficiently removed from the bolt B by the rotation operation of the rotary handle 7 or is hung on the bolt B. The procedure is similar to the above except that the initial tightening of the nut N cannot be efficiently performed.

Next, a description will be given of an example of use when the pawl seat locking lever is used as an independent component (not attached to a spanner). As described above, the through hole n is formed in the nut N of the pawl fixing bolt B. The U-shaped portion 1 is externally fitted to fit the claw seat C, and the grip portion 3 is held by one hand so that the position of the claw seat locking lever is held at a constant angle position, and the other hand is held. Then, the hanging portion of the conventional spanner having a single structure is externally fitted to the nut N so that the spanner can be rocked. Also by this, the rotation of the pawl shaft D is easily blocked, and the fastening and loosening operation of the nut N can be easily performed.

In the present invention, the fact that the arm portion 2 of the pawl seat locking lever is bent to a specific side means that the hand holding the grip portion 3 grips the ratchet spanner 4 when used together with the ratchet spanner 4. Prevents interference with hands and makes work easier.

According to the present invention constructed as described above, the fastening or loosening operation of the claw fixing bolt and nut for fixing the tilling claw can be performed easily and easily, and the removal of the tilling claw such as the rotary can be efficiently performed. Can be implemented in a specific way.

[Brief description of drawings]

FIG. 1 shows an embodiment of a pawl seat locking lever according to the present invention, in which (a) is a diagram showing a basic form and (b) is a diagram showing a modification thereof.

FIG. 2 is a view showing an embodiment of a ratchet spanner with a pawl seat locking lever according to the present invention.

FIG. 3 is a partial view showing a usage state of the ratchet spanner, wherein (a) is a front view and (b) is a plan view with a part in section.

FIG. 4 is a view showing another embodiment of the ratchet spanner with a pawl seat locking lever according to the present invention.

FIG. 5 is a partial view of the ratchet spanner, (a) is a front view and (b) is a side view showing a central longitudinal section.

FIG. 6 is a view showing an example of use of a ratchet spanner with a pawl seat locking lever according to the present invention.

[Explanation of symbols]

 n through hole B claw fixing bolt C claw seat D claw shaft N nut 1 U-shaped part 1a central surface part 1b side part 2 arm part 3 gripping part 4a spanner body part 5 ring member 5a overhanging part 7 rotation handle

Claims (3)

[Claims] 1. An arm portion is extended from a U-shaped portion that is engaged with a claw seat of a pawl shaft, and a tip portion of the arm portion serves as a grip portion, and the U-shaped portion is a substantially central portion of a central surface portion. It does not have a through hole with a diameter related to the nut screwed to the claw fixing bolt, and the arm part was bent appropriately to the same side as the bending side of the side part of the U-shaped part Claw seat locking lever characterized by being made. 2. The pawl seat locking lever according to claim 1, wherein a protruding portion of one side of the ring member engaged with the nut and rotated and fed in a certain direction by a ratchet mechanism is provided with a through hole of a U-shaped portion. A ratchet spanner with a pawl seat locking lever, which is swingably attached around the ring member via the claw seat locking lever. 3. A pawl seat locking lever according to claim 1, wherein a protruding portion on one side of a ring member that is engaged with a nut and is rotated and fed in a constant direction by a ratchet mechanism is provided with a U-shaped through hole. The ratchet with a pawl seat locking lever is characterized in that it is swingably attached to the ring member through the ring member, and a rotary handle for interlocking rotation of the ring member is provided near the tip of the wrench body. spanner.