JP2013123791A - Adapter for head exchange type torque wrench - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter for utilizing a head exchange type torque wrench and enabling the use of existing various types of wrenches.SOLUTION: The adapter AD applied to the head exchange type torque wrench including a torque wrench body to which a head is detachably set includes: a connection part 20 detachably connected to a body side connection part provided at the torque wrench body part side for setting the head; a base 10 formed to be integrated to the connection part; and a moving part 30 provided to be movable with respect to the base. The base 10 and the moving part 30 are provided with first/second clipping surfaces 11, 31, respectively, arranged to face each other and work together for clipping handles of the existing various wrenches. The base and the moving part are connected through a screw moving mechanism in which a male screw 40 is engaged with a female screw 45. An interval L between the first/second clipping surfaces can be expanded and reduced by rotating the male screw or the female screw.

Description

  The present invention relates to an adapter applied to a so-called head replaceable torque wrench. More specifically, the present invention relates to an adapter that can be used in place of a head portion prepared in advance for a head replaceable torque wrench so that various existing wrench can be mounted.

  In various product manufacturing factories, work sites, and the like, torque wrenches are widely used because there is a demand to set the tightening state (torque value) of screws to a predetermined value. However, since there are various types of screws to be tightened, the tightening jig portion (wrench head portion) also needs to have various forms such as a spanner wrench, a spectacle wrench, a hexagon wrench, and the like. . Furthermore, because there are multiple sizes, it is necessary to have a large number of head-integrated torque wrenches, so there are inconveniences not only in terms of purchase costs but also in terms of storage and management. is there. Therefore, conventionally, there has been provided a head exchange type torque wrench in which a torque wrench main body (rod-shaped main body) is shared and a head such as a spanner wrench, a spectacle wrench, a hexagon wrench, etc. can be exchanged. Such a head replaceable torque wrench is convenient because the head portion may be replaced as appropriate according to the screws to be tightened, and the torque wrench main body portion can be shared.

However, in the head exchange type torque wrench as described above, the head part to be exchanged is generally a dedicated product, and it is necessary to prepare a plurality of head parts to be used in advance. In addition, head-replaceable torque wrenches provided by multiple manufacturers are usually proprietary standards, so there is no compatibility between the head parts, and such special head parts themselves can be used for other purposes. There is nothing.
Therefore, Patent Document 1 discloses a universal torque wrench provided with a clamp mechanism for holding a handle portion of various existing wrench in a head portion of a torque wrench body. This universal torque wrench is preferable because it can clamp existing wrench of various shapes by a clamp mechanism, and can tighten screws using the existing wrench.

Japanese Patent No. 2679943

However, the above-described head replaceable torque wrench has been supplied for a long period of time, and is still a widely used tightening tool. There are very many manufacturing factories and manufacturing sites that already own this. And it is expected that head-changeable torque wrenches will be used in many fields.
However, the universal torque wrench disclosed in Patent Document 1 is a torque wrench that is completely incompatible with a conventional head exchangeable torque wrench. Therefore, even if a person who already owns a head replaceable torque wrench wants to utilize the existing various wrench, a universal torque wrench according to Patent Document 1 must be purchased separately. This not only requires the cost of purchasing a tightening tool, but also increases the number of torque wrenches as pointed out above, which is also inconvenient in terms of storage and management.

  Therefore, the object of the present invention is to solve the conventional problems as described above, and to effectively use the main body of the head exchange type torque wrench that has been widely used so far, various existing wrench can be used. To provide an adapter.

The above object is an adapter applied to a head replaceable torque wrench having a head portion on which a jig for tightening screws is formed and a torque wrench main body portion on which the head portion is detachably set. There,
A connection part detachably connected to a main body side connecting part provided on the torque wrench main body side for setting the head part, a base part formed integrally with the connection part, and the base part And a movable part provided so as to be movable,
Each of the base part and the moving part is provided with first and second clamping surfaces that are arranged to face each other and cooperate to sandwich a handle part of various existing wrench,
The base portion and the moving portion are connected via a screw moving mechanism in which a male screw and a female screw mesh with each other, and by rotating the male screw or the female screw, the first and second clamping surfaces This can be achieved by an adapter for a head replaceable torque wrench characterized in that the interval can be enlarged or reduced (claim 1).

  A through hole is provided in the moving part, and one end part side of the male screw is rotatably inserted into the through hole, and a front end part of the male screw protruding to the opposite side through the through hole A rotation operation member is fixed, and the other end of the male screw can be engaged with the female screw provided on the base (claim 2).

  The female screw is biased by a biasing spring in a direction to mesh with the male screw, and further, when operated, an operation lever that separates the female screw from the male screw against the biasing spring. Is preferably provided (Claim 3).

  By adopting the adapter of the present invention, the existing wrench can be set by diverting the torque wrench main body of the head exchange type torque wrench that has been widely used so far, and tightening work using the existing wrench is also possible. Yes. Thereby, compared with the case where the torque wrench for using the existing wrench is newly purchased, the problem that cost reduction and the same kind of tool increase can also be eliminated.

It is the perspective view shown about the adapter for head exchange type torque wrenches concerning one embodiment of the present invention. FIG. 2 is a configuration diagram of an arrow AR in FIG. It is the figure which showed a mode when this adapter was applied to the torque wrench main-body part of a head exchange type torque wrench.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an adapter AD for a head replaceable torque wrench according to an embodiment of the present invention. This adapter AD is a tool applied to a rod-shaped torque wrench main body in a head interchangeable torque wrench that has been widely used in the past. It was devised to make effective use of
A conventional head replaceable torque wrench includes a head portion on which a jig for tightening screws is formed, and a torque wrench main body portion on which the head portion is detachably set. The adapter AD is a new tool that is set in the torque wrench main body instead of the head and enables the use of various existing wrench. In other words, the adapter AD can be regarded as a deformable head when compared with the head (dedicated head) used in the head replaceable torque wrench. The deformable head can be replaced with the dedicated head. Can be used to share the torque wrench body and use existing wrench.

The configuration of the adapter AD according to the present invention will be described in detail with reference to FIG. 1A shows a state when the distance L between first and second clamping surfaces described later of the adapter AD is widened, and FIG. 1B shows when the distance between the first and second clamping surfaces is narrowed. The state of is shown.
In FIG. 1, the adapter AD includes a base 10, a connection unit 20, and a moving unit 30.
The connecting portion 20 is a structural portion for detachably connecting to a main body side connecting portion (CN) provided on the torque wrench main body portion side for setting the head portion. In FIG. 1, the head replaceable torque wrench is not shown. However, if the cross-sectional shape of the main body side connecting portion on the torque wrench main body side is a circular or elliptical convex portion, for example, the connection on the adapter AD side The part 20 has a concave part structure that receives and fits the part 20. Since the adapter AD is set in the main body side connecting portion (CN) of the torque wrench main body instead of the predetermined head (dedicated head) as described above, the connecting portion 20 is the head portion. It may be formed in the same manner as the connection structure. The connection part 20 is integrally fixed to the base part 10 which becomes the base structure of the adapter AD. Therefore, the action (tightening force) from the connected torque wrench main body side is transmitted to the base 10.

In general, a plate-like moving unit 30 is movably disposed with respect to the base 10. Each of the base 10 and the moving unit 30 is opposed to each other and cooperates so as to sandwich the handle portions (not shown here) of existing various wrench. A second clamping surface 31 is provided on the surface 11 and the moving unit 30 side. FIG. 1A shows a state in which a handle portion of an existing various wrench (not shown) is received by widening the distance L between the first clamping surface 11 and the second clamping surface 31, and FIG. Shows a state in which the interval L between the first clamping surface 11 and the second clamping surface 31 is narrowed to hold the handle portions of various wrench.
The clamping surfaces 11 and 31 may be formed on a completely flat surface as long as the handle of the wrench can be securely clamped and held when approached (distance L) is reduced. Thus, it is preferable to provide the long groove-like recesses 11a and 31a so as to face each other. If it does in this way, if the handle part of a wrench is accommodated between the recessed parts 11a and 31a which oppose, it can clamp more reliably.

And the said base 10 and the high-order moving part 30 are connected via the screw | thread moving mechanism with which the external thread 40 and an internal thread mesh, and it is 1st by rotating the said external thread with respect to an internal thread. The interval between the second clamping surfaces 11 and 31 is configured to be enlarged / reduced. The female screw is disposed inside the base 10 and is not shown in FIG.
Furthermore, the relationship between the male screw 40 and the female screw 45 will be described with reference to FIG. FIG. 2 is a view schematically showing the arrow AR in FIG. 1A and is a diagram schematically showing the internal configuration of the base 10. In addition, the same code | symbol is attached | subjected to the same site | part as FIG. Further, a part of the thread 40t of the male screw 40 is omitted.

  A through hole 32 is provided in the moving portion 30, and one end of the male screw 40 is rotatably inserted into the through hole 32, and the male screw protrudes to the opposite side (left side in the figure) through the through hole 32. A wing nut 41 serving as a rotation operation member is fixed to the tip of 40. A washer 42 is provided between the wing nut 41 and the moving unit 30. An O-ring 43 formed of an elastic material such as rubber is provided on the side opposite to the washer 42 with the moving unit 30 therebetween, and the moving unit 30 moves (moves the male screw 40 in the axial direction). Is regulated. As a result, when the wing nut 41 is rotated, the male screw 40 fixed to the wing nut 41 idles at the same position with respect to the moving unit 30.

  The other end of the male screw 40 meshes with the female screw 45 provided in the base 10. The female screw 42 is biased by the biasing spring 12 in a direction to engage with the male screw 40. An operation lever 14 is provided that is rotatable about a rotation point 13 provided on the base 10, and a female screw 42 is connected to one end thereof. Therefore, the female screw can be separated from the male screw 40 against the biasing spring 12 when the other end of the operation lever 14 is pushed in as indicated by the arrow TR. In the drawing, the urging spring 12 is disposed so as to push the gap between the inner wall of the base 10 and the female screw 45, and the thread 45 t of the female screw 45 is not connected to the male screw 40 when the operation lever 14 is not operated. It is pushed toward the screw thread 40t.

  When the structure in which the female screw 45 can be separated from the male screw 40 as described above is provided, the operation lever 14 determines whether the female screw 45 is engaged with the male screw 40 or not. Can be switched. When the operation lever 14 is not operated, it is in a meshing state. Then, when the operation lever is pushed in and tilted to the arrow TR side in FIG. 2, the engagement of the female screw 45 with the male screw 40 is released and the free state is established. Therefore, the movement part 30 side can be moved in the free state in which the operation lever 14 is tilted, and the interval L between the clamping surfaces 11 and 31 can be widened without the need for screwing. And after arrange | positioning the handle part of the existing various wrench between the clamping surfaces 11 and 31, if it remove | releases the hand from the operation lever 14 in the state which narrowed the space | interval of a clamping surface and just pinched the handle part, it will be in a temporarily fixed state it can. When the wing nut 41 is rotated and tightened from the temporarily fixed state, the handle portion of the wrench can be securely held.

As shown in FIG. 2, in this adapter AD, a rod-shaped slide member 35 extends from the moving portion 30 in parallel with the male screw 40. The slide member 35 is fitted so as to slide on the inner wall of the through passage 15 formed on the base 10 side. That is, since the slide member 35 is set so as to fit into the through passage 15 and slide, the movable member 30 can be stably moved with respect to the base portion 10.
And it is preferable that the cross-sectional shape of the slide member 35 is a rectangular (rectangular) shape, and the penetration path 15 is also a rectangle according to this. Thereby, while the moving member 30 is stably slid with respect to the base 10, an unnecessary rotation operation (an operation in which the moving member 30 rotates around the slide member 35) can also be suppressed. It is possible to move more stably with a constant posture.

  FIG. 3 is a view showing a state in which the adapter AD is applied to the torque wrench main body 100 of a conventional head replaceable torque wrench. The connecting portion 20 of the adapter AD is connected to the main body side connecting portion 101 of the torque wrench main body portion 100. Then, a state in which the handle portion 201 of an existing wrench (illustration is a spanner wrench) 200 is already set and completed between the base portion 10 and the moving portion 30 is illustrated. As described above, when the adapter AD is used, the existing various wrench can be effectively utilized by sharing the torque wrench main body 100.

  According to the present invention, the head exchange type torque wrench can be used by replacing the head part as before, and further, if the adapter is set instead of the head part, the tightening work with the existing wrench can be performed. Become. Thus, since the adapter of the present invention can be used by being set (mounted) on the torque wrench body, there is no need to purchase a new torque wrench, and various existing wrench (generally used for hand tightening etc.) Tightening can be performed using a wrench, wrench, hexagon wrench, ratchet wrench, etc. Therefore, the purchase cost can be reduced, and the inconvenience of increasing the number of tools of the same type and complicated storage and management can be solved.

Although the description of the embodiment has been completed above, the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the scope of the invention.
If the structure of the connecting portion 20 described above is improved so that it can be connected not only to a torque wrench body portion of a predetermined manufacturer but also to a torque wrench body portion of another manufacturer, a more preferable adapter can be obtained.

  In the above, the male screw 40 is rotatable in the through-hole 32 provided in the moving part 30, the wing nut 41 is fixed to the end of the male screw, and the structure in the case of rotating the male screw side is exemplified. However, the screw structure is not limited to this. For example, a male screw extending toward the moving unit 30 is fixed on the base 10 side, and a wing nut is rotatably disposed in the through hole 32 of the moving unit 30. Then, the wing nut and the male screw are engaged with each other. In this case, the wing nut is rotated and moved in the same manner, but the wing nut functions as a female screw, and the screw moving mechanism moves the moving unit 30 by the rotation of the female screw.

DESCRIPTION OF SYMBOLS 10 Base part 11 1st clamping surface 12 Biasing spring 14 Operation lever 20 Connection part 30 Moving part 31 2nd clamping surface 32 Through-hole 40 Male screw 41 Wing nut (rotation operation member)
45 Female thread 100 Torque wrench main body 101 Main body side connecting part 200 Existing wrench 201 Handle part AD adapter

Claims (3)

An adapter applied to a head replaceable torque wrench comprising a head portion on which a jig for tightening screws is formed and a torque wrench main body portion on which the head portion is detachably set,
A connection part detachably connected to a main body side connecting part provided on the torque wrench main body side for setting the head part, a base part formed integrally with the connection part, and the base part And a movable part provided so as to be movable,
Each of the base part and the moving part is provided with first and second clamping surfaces that are arranged to face each other and cooperate to sandwich a handle part of various existing wrench,
The base portion and the moving portion are connected via a screw moving mechanism in which a male screw and a female screw mesh with each other, and by rotating the male screw or the female screw, the first and second clamping surfaces Adapter for head-changeable torque wrench, characterized in that the interval can be enlarged or reduced. A through hole is provided in the moving portion, and one end portion side of the male screw is rotatably inserted into the through hole, and a rotation operation is performed on a tip portion of the male screw protruding to the opposite side through the through hole. The member is fixed,
2. The adapter for a head replaceable torque wrench according to claim 1, wherein the other end portion side of the male screw meshes with the female screw provided on the base portion.   The female screw is biased by a biasing spring in a direction to mesh with the male screw, and further provided with an operation lever that separates the female screw from the male screw against the biasing spring when operated. The adapter for a head replaceable torque wrench according to claim 2, wherein the adapter is used.

Images