JPH073968U - T type wrench - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a T-type wrench that is easy to store and carry by making the handle rod slidable and removable. [Structure] A bolt head insertion hole 12 is provided at a lower end of a central shaft 11 of a T-shaped body 10, and a pair of branch portions 13 _R and 13 _L extend from the upper end of the central shaft 11 at right angles in opposite directions. The handle rods 20 _R and 20 _L are slidably fitted into the respective branch portions 13 _R and 13 _L. Handle rod 20 _R , 20 _L
Is a stopper 3 fixed to the tips of the branch portions 13 _R and 13 _L.
It can be stopped with 0 _R and 30 _L. Handle rod 20 _R , 20
_L having a length corresponding to the required rotational moment is selected and fitted into the branch portions 13 _R and 13 _L. [Effect] By adjusting the effective length of the handle, the rotational moment required for tightening or removing the bolt can be easily obtained. Also, by shortening the effective length of the handle or removing the handle rods 20 _R and 20 _L , the space occupied by the wrench when not in use is reduced so that it can be stored in a small tool box, and storage and transportation are simplified.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a T-type wrench with a variable effective length of a handle portion.

[0002]

[Prior art]

 The T-type wrench has the shape shown in FIG. 1, which is integrally manufactured from tool steel or the like. That is, the bolt head insertion hole 2 is formed in the lower end of the central shaft 1, and the branch portions 3 and 4 extending in opposite directions are projected from the upper end of the central shaft 1. When rotating the central shaft 1 by gripping the branches 3 and 4 with both hands, the branches 3 and 4 are provided with handle portions 5 and 6 having knurls or the like to make the branches 3 and 4 uneven so as not to slip the hands. It is provided.

In this T-type wrench, the head of the bolt to be screwed in or removed is inserted into the insertion hole 2 and the bolt is rotated by the force applied to the handle portions 5 and 6. At this time, a large rotational moment is obtained by the lever principle, and the bolt can be firmly fastened. Further, even a bolt that is tightly screwed in can be easily removed.

[0004]

[Problems to be solved by the device]

 The conventional T-type wrench is integrally molded as shown in FIG. Therefore, it requires a large storage space when not in use. Also, it is inconvenient to carry. In particular, maintenance work for agricultural machinery, which often uses this type of wrench, is often performed outside the repair shop. When considering this type of usage, there is a problem in storage and carrying with an integrated wrench.

Further, the required rotational moment differs depending on the bolt to be tightened or to be removed. For example, when tightening a bolt with a large tightening force, a T-wrench with a long branch is used so that a large rotation moment can be obtained. Therefore, it is necessary to prepare multiple wrenches of different sizes, which makes storage and carrying even more difficult.

The present invention has been devised to solve such a problem, and by providing the handle rod in a detachable and slidable manner, a large storage space is not required and various bolts are required. An object of the present invention is to provide a T-type wrench that can be applied to.

[0007]

[Means for Solving the Problems]

 In order to achieve the object, the T-shaped wrench of the present invention comprises a T-shaped body having a pair of branch portions extending at right angles in opposite directions from an upper end of a central shaft having a bolt head insertion hole at a lower end, and the branch portion. A handlebar that is slidably fitted in each of the two, and a removable stopper that is attached to the front end of the branch part and that prevents the handlebar from falling off from the branch part. It is characterized in that one having a length according to the rotation moment is selected and fitted into the branch portion.

[0008]

【Example】

In the T-shaped wrench of this embodiment, as shown in FIG. 2, a pair of handle rods 20 _R and 20 _L are slidably and detachably provided on a T-shaped main body 10. A bolt head insertion hole 12 is formed in the central shaft 11 of the T-shaped body 10. In addition, branch rods 13 _R and 13 _L extend in opposite directions from the upper end of the central shaft 11.

[0009] Eda杆13 _R, 13 handle rod is inserted into the _L 20 _R, 20 _L are concave convex, non-slip grooves or the like are formed 21 _R, 21 _L are applied to its surface. Handle lever 2 0 _R, 20 _L is, for example, inserted into the Eda杆13 _R, 13 _L as shown in FIG. 3 (a). The handle rod 20 _R has an end wall 22 _R having an inner diameter slightly larger than the outer diameter of the branch rod 13 _R formed at the tip end on the fitting side, and the end wall 22 _R to the cylindrical portion 23 _R have the same wall thickness. It is extended. The other handle rod 20 _L has a similar structure.

Handle rod 20_R Branch rod 13 into which is inserted_R At the end of the stopper 30_R Is provided. Stopper 30_R Stopper piece 31_R Is the branch rod 13_R Mounting bolt 32 that is screwed axially into the end of the_R By branch bar 13_R Fixed to the end of. Stopper piece 31_R Is the handle rod 20_R Cylindrical part 23_R It has an outer diameter that is slightly smaller than the inner diameter of the handle, and the end face on the center axis side is the handle rod 20._R End wall 22_R Stopper surface 33 that abuts_R Has become. Also, the end wall 22_R Inner surface and branch rod 13_R Between the outer surface of the and_R Is installed. The other handle rod 20 _L Also with a similar stopper mechanism 13_L Is inserted into.

With respect to one T-shaped body 10, a plurality of handle rods 20 having different lengths are provided._R , 20 _L Is prepared. A handle rod 20 with a length corresponding to the bolt to be tightened or removed._R , 20_L Pick out the branch 13_R , 13_L Insert into each. And branch 13_R , 13_L 30 at the end of_R , 30_L Secure the handle with the handle rod 20_R , 20_L To prevent slipping off.

[0012] Eda杆13 _R, 13 fitted to the _L interpolated handle rod 20 _R, 20 _L, it can be slid in the axial direction of the Eda杆13 _R, 13 _L. The axial slide is restricted by the side surface of the end wall 22 _R contacting the stopper surface 33 _R as shown in FIG. 3B, and the handle rod 20 _R has the largest effective force in the state of FIG. 3B. Take the length. By gradually sliding the handle rod 20 _R toward the central axis 11 side of the T-shaped main body 10 from the state shown in FIG. 3B, a handle having an effective length suitable for the required rotation moment is obtained. When the head of the bolt is fitted into the insertion hole 12 in this state and the central shaft 11 is rotated, the bolt can be easily tightened or removed.

In the handle rod 20 _R , the inner peripheral surface of the end wall 22 _R is in contact with the outer peripheral surface of the branch rod 13 _R via the ring 34, and the inner peripheral surface of the cylindrical portion 23 _{R is} the outer peripheral surface of the stopper piece 31 _R. Since it is supported on the surface, it does not rattle even though it is a slide type. In addition, since the ring 34 _R having a non-slip action is interposed, the handle rod 20 _R is prevented from sliding in the axial direction of the branch rod 13 _R during use. Other handle lever 2 0 _L is maintained at a predetermined position similarly Eda杆13 _L. As a result, the bolt tightening or removing work can be carried out easily, as in the case of the integrated T-type lench.

When storing or transporting, the handle rods 20 _R and 20 _L can be slid toward the central shaft 11 side to reduce the space occupied by the wrench. Alternatively, the stopper 30 removably _R, a 30 _L from Eda杆13 _R, 13 _L, the separation of the T-shaped body 10 and the handle rod 20 _R, 20 _L, footprint is further reduced, convenient coercive tube and carry become.

In the above example, the case where the bolt head insertion hole 12 is integrally provided in the T-shaped body has been described. However, the present invention is not limited to this, and other types can be adopted as long as the bolt head insertion hole 12 is provided at the lower end of the central shaft 11. For example, a bolt mounting portion provided with the bolt head insertion hole 12 may be separately prepared, and the bolt mounting portion may be detachably attached to the lower end of the central shaft 11 by screwing or the like. In this case, by preparing a plurality of bolt mounting parts, it is possible to tighten and remove various bolts having different sizes with a single wrench.

[0016]

[Effect of device]

 As described above, in the present invention, the T-shaped body and the handle rod are separately configured, and the handle rod is slidably and detachably attached to the branch portion of the T-shaped body. Therefore, by adjusting the effective length of the handle rod, the rotational moment required for tightening or removing the bolt can be easily obtained. When not in use, the effective length of the handle rod can be reduced, or the handle rod can be removed from the T-shaped body to reduce the space occupied by the wrench, and it can be stored in a small tool box for storage and transportation. Etc. becomes simple.

[Brief description of drawings]

FIG. 1 A conventional integrally molded T-wrench

FIG. 2 is a T-type wrench according to an embodiment of the present invention.

FIG. 3 is a state in which the handle rod is fitted into the branch rod.

[Explanation of symbols]

10 T-shaped main body 11 Central axis 12
Bolt head insertion hole 13 _R , 13 _L Branch rod 20 _R , 20 _L Handle rod 21 _R , 21 _L Non-slip 22 _R End wall 23 _R
Cylindrical part 30 _R , 30 _L stopper 31 _R stopper piece 32 _R mounting bolt 33 _R stopper surface 34 anti-slip ring

Claims (1)

[Scope of utility model registration request] 1. A pair of branches extending at right angles in opposite directions from an upper end of a central shaft having a bolt head insertion hole at a lower end.
A V-shaped body, a handle rod slidably inserted into each of the branch portions, and attached to the tip of the branch portion,
A detachable stopper for preventing the handle rod from falling off from the branch portion, and the handle rod having a length according to a required rotation moment is selected and inserted into the branch portion. T-type wrench featuring.