JPH0675671U - Ratchet ring spanner - Google Patents

Abstract

(57) [Summary] [Purpose] Providing a ratchet type spanner that enables simple and quick tightening and fixing or loosening and removal of bolts and nuts used even in narrow and deep places To do. [Structure] A ring-shaped mouthpiece portion 3 is provided at the tip of an elongated body member 1 via a ratchet mechanism 4 so as to be able to rotate and feed little by little in a certain direction, and a rotation operation is performed at a position near the base portion of the body member. An input member 8 to which a force is applied is provided so as to be rotatable and displaceable around a fixed axis, and an interlocking device 10 is provided for interlocking with the input member to rotationally displace the ring-shaped mouthpiece portion toward the feed side. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ratchet type ring spanner used for fastening and fixing bolts and nuts used in narrow and recessed places and for loosening and removing.

[0002]

[Prior art]

 There is already a ratchet-type wrench provided with a ring-shaped mouthpiece member which is capable of small-sized incremental transfer in a certain direction through a ratchet mechanism at the tip of an elongated body member.

This spanner is capable of quickly tightening or loosening the bolt and nut by a continuous forward and backward swinging operation without changing the cap member to the bolt head or the nut.

[0004]

[Problems to be solved by the device]

 The above-mentioned conventional ratchet type spanner is useful for further tightening the bolt / nut while holding the object to be fastened with an appropriate force, or for loosening the bolt / nut in the tightened state. However, when mounting the bolt and nut before it reaches the state where the object to be fastened has been fastened with the required force, or when the bolt and nut has been removed from the fastened state and is completely loosened, the screw The resistance against the rotational displacement of the bolts and nuts screwed into the part becomes insufficient, and the ring-shaped mouthpiece cannot be rotated and fed to the main body member. In order to rotate the bolts and nuts in this state, they are turned directly with fingers. However, if the bolts and nuts are in a narrow and recessed area, or if the bolts and nuts are rusted or dirty, it is difficult or impossible to perform such manual operation. For this reason, in the past, in such a case, the ring-shaped mouthpiece of the wrench was unavoidably changed in small increments to rotate the bolts and nuts in the required direction.However, such work is inefficient and complicated. Can not stand.

The present invention solves such a problem, and provides a ratchet type spanner capable of simply and quickly fastening and fixing and loosening and removing even a bolt and nut used in a narrow and deep place. The purpose is to do.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a ring-shaped mouthpiece member is provided at the tip of an elongated body member, which is capable of rotating and feeding little by little in a certain direction via a ratchet mechanism. An input member to which a rotational operation force is applied is provided at a position near the base of the ring so as to be rotatable and displaceable around a fixed axis, and the ring-shaped mouthpiece member is interlocked with the input member to rotationally displace it toward the feed side. We will come to have means.

[0007]

[Action]

 When the present invention is used, the ring-shaped mouthpiece is adapted to the rotational feed direction thereof and directly or indirectly fitted to the bolt head or the nut, and the body member is grasped at the base by hand to form the ring-shaped mouthpiece. It is rocked around the mouthpiece. Further, when the rotational resistance of the bolt or nut to be rotationally displaced is small, the input member is rotationally displaced by being given the rotational operation force by the handwheel handle or the rotational force by the power of the motor, etc. As a result, the ring-shaped mouthpiece is rotated toward the feed side.

[0008]

【Example】

 1A and 1B show an embodiment of a spanner according to the present invention, FIG. 1A is a front view in which a part of a main body member is omitted, and FIG. 1B is a sectional view showing an xx section.

In the figure, reference numeral 1 denotes an elongated main body member, which comprises a pair of side plates 1a and 1b and two interposing plates 1c and 1d. Reference numerals 2a and 2b are bolts and nuts that integrally fasten the side plates 1a and 1b and the interposition plates 1c and 1d. The length and width of the member 1 are arbitrarily determined depending on the purpose of use, but for example, the length is about 500 mm and the width is about 35 mm.

Reference numeral 3 denotes a ring-shaped mouthpiece portion rotatably provided at the tip of the main body member 1 so that the ratchet mechanism 4 can feed the rotation in small increments in the arrow direction f1.

The inner hole 3a of the ring-shaped base 3 may be directly fitted to the bolt head or the nut, or may be separately fitted to the bolt head or the nut. It is also possible to form an unsealed base body and fit and fix the fitting portion of the base body.

The ratchet mechanism 4 has pawl teeth 3b ... Formed on the outer peripheral surface of the ring-shaped mouthpiece portion 3 so that the mouthpiece portion 3 serves as a ratchet wheel, while the main body member 1 serves as a bearing shaft. 5, a claw body 6 is swingably displaced on the support shaft 5, and a compression spring 7 is interposed between the claw body 6 and the recess s of the intervention plate 1d. The tip of the pawl 6 is pressed by the compression spring 7 against the pawl tooth 3b.

Reference numeral 8 denotes an input member to which a rotational operation force is applied from the outside, which is provided at a position near the base of the body member 1 so as to be rotatable and displaceable at a fixed position, and a shaft portion supported by a pair of side plates 1a and 1b. 8a, 8b and a toothed pulley having teeth 8c on the outer peripheral surface. Although the position of the input member 1 is also determined by the purpose of use, it is set to about 370 mm from the tip of the main body member 1, for example. Square holes h are provided in the shaft portions 8a and 8b, and a fitting portion 9a of a separately formed operation handle 9 is fitted therein, or a tip portion of an output shaft such as a rotation operation motor is fitted therein. I am able to do things. In addition, 9b is an arm part and 9c is a grasping part.

Reference numeral 10 is an interlocking means for interlocking the input member 8 and the ring-shaped mouthpiece portion 3, and between the input member 8 and the outer periphery of the ring-shaped mouthpiece portion 3, teeth 8 c, ... -The endless toothed belt 11 is wound around via and. At this time, 12 is a belt path formed by the recessed portion s1 of the interposing plate 1c and the outer periphery of the other interposing plate 1d.

A usage example and an operation of the product of the present invention configured as described above will be described. In recent years, the work equipment attached to the tractor has become extremely complicated to perform complex work.Especially when replacing the rotary plowing jaws, tighten and fix the bolts and nuts in the deep and tight places. Or vice versa, it is necessary to remove the loosening.

When tightening and fixing the bolt fixing the tilling claw in the rotary, the tip of the fixing bolt b is slightly screwed into the screw hole of the claw fixing metal fitting m shown in FIG. As shown in the figure, the head of the bolt b is fitted into the inner hole 3a of the ring-shaped base 3. The front and back sides of the side plates 1a, 1b of the main body member 1 are selected so that the ratchet mechanism 4 can feed the ring-shaped mouthpiece 3 by tightening the bolt b in a freely rotating direction.

Next, the base portion of the main body member 1 is grasped with one hand and the operation handle 9 fitted into the square hole h is rotated with the other hand in a desired direction, whereby the ring-shaped mouthpiece portion 3 is moved. The rotation of the input member 8 is transmitted by the toothed belt 11 so that the input member 8 is continuously rotated, and the bolt b is quickly screwed into a state in which the plowing claw is fastened with an appropriate holding force. At this time, since it is possible to apply a relatively large rotational force to the input member 8, even if the screw holes of the bolt b and the fixing bracket m are slightly rusted or dirty, the bolt b can be smoothed. In addition, it is quickly screwed in, and the operation handle 9 is rotated and operated in the absence of obstacles around it.

Next, the base portion of the main body member 1 is manually reciprocally rocked, whereby the ring-shaped mouthpiece portion 3 is tightened via the ratchet mechanism 4 to give a small rotational feed in the arbitrary direction, and the bolt b is compared. It is fast and strong.

On the other hand, when loosening and removing the fastened bolt b, the body member 1 is turned upside down in the posture of the tightening operation, and the ring-shaped mouthpiece portion 3 is fitted to the head portion of the bolt b. At the same time, the main body member 1 is reciprocally rocked by its base. As a result, the ratchet mechanism 4 now loosens the ring-shaped mouthpiece 3 to give a small rotational feed in the arbitrary direction, and the bolt b is relatively quickly and loosened with a strong force.

After the bolt b is completely loosened and the loosening process by the action of the ratchet mechanism 4 is no longer possible, the operation handle 9 is attached to the square hole h and moved in the required direction in the same manner as described above. Rotate. In this connection, the ring-shaped mouth part 3 is continuously rotated in the same manner as described above, the bolt b is smoothly and quickly pulled out to enable the replacement of the tillage claw and, if necessary, the fixing bracket m. It is pulled out from the screw hole of.

In the above-mentioned embodiment, the interlocking means 10 is the endless toothed belt 11, but the invention is not limited to this, and it may be a chain or a gear. Good.

[0022]

[Effect of device]

 According to the present invention configured as described above, it is possible to easily and quickly tighten and fix the bolts and nuts even if they are used in a narrow and recessed place, or remove them by loosening them. Is.

[Brief description of drawings]

1 shows an embodiment of a spanner according to the present invention, (a)
Is a front view in which a part of the main body member is omitted, and (b) is a cross-sectional view showing a section xx.

FIG. 2 is a view showing a situation in which the same wrench is used to fasten or loosen a bolt to which a rotary claw is fixed.

[Explanation of symbols]

 1 main body member 3 ring-shaped mouthpiece part 4 ratchet mechanism 8 input member 10 interlocking means

Claims (1)

[Scope of utility model registration request] 1. A slender main body member (1) provided with a ring-shaped mouthpiece (3) capable of rotatively feeding in a certain direction through a ratchet mechanism (4) at a tip end thereof. Therefore, an input member (8) to which a rotational operation force is applied is provided at a position near the base of the main body member (1) so as to be rotatable and displaceable around a certain axis, and the ring-shaped mouthpiece is interlocked with the input member (8). A ratchet ring wrench provided with interlocking means (10) for rotationally displacing the portion (3) to the feed side.