JPH0585553U - Rotary connection wrench - Google Patents

Abstract

(57) [Abstract] [Purpose] Since a large number of nut inserts with different inner diameters are attached to a single wrench, the optimum nut insert that matches the size of the nut can be easily selected for workability. In addition to being excellent, it is easy to carry and store because it is not bulky, and especially the one having the ratchet structure for the nut insertion portion can further improve the workability. [Configuration] Adjacent tops 1a, 1b ... 1f are connected to a connecting pin 4
A plurality of tops 1a, 1b ...
1f is connected endlessly, and each top 1a is connected endlessly,
1f have circular nut insertion portions 6a, 6b, ... 6f into which nuts 9 are inserted, at one end on the outer surface side of the adjacent pieces 1.
1f are provided so as to come into contact with the outer surface of a, 1b, ...
It is characterized in that the inner diameters of a, 6b ... 6f are changed respectively.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lench having a rotating structure by connecting a plurality of nut insertion portions having different inner diameters.

[0002]

[Prior Art]

 Generally, a wrench is used to tighten the nut. This wrench has a structure in which a ring-shaped nut insertion part is attached to the tip of a rod-shaped grip part, and various types are prepared according to the external shape of the nut, and the wrench suitable for the size of the nut is replaced and tightened. .. As a result, the number of grippers increases, so there is a box wrench with nut inserts with different inner diameters at both ends of the grip, but this is also a set of 5 to 10 so that it can be applied to many types of nuts. It has been put in the tool box.

However, since each box wrench is also provided with two nut insertion parts per one, it is necessary to select an optimum box wrench suitable for the size of the nut. When it is not stored, it is troublesome to look for it, and I had to carry the tool box to the place where I worked. If even one is lost, it cannot be used as a set, which is inconvenient for the work.

[0004]

[Problems to be solved by the device]

 The present invention eliminates the above-mentioned drawbacks, and compared to the conventional wrench used as a set by combining a large number of nuts, a single wrench is equipped with a large number of nut insertion parts with different inner diameters, so that the size of the nut is large. It is possible to easily select the optimum nut insertion part that suits the requirements, which is excellent in workability, and because it is not bulky, it provides a rotary coupling type linch that is easy to carry and store.

[0005]

[Means for Solving the Problems]

 The present invention has a circular shape in which nuts are inserted into one end on the outer surface side of each of the endlessly connected tops by endlessly connecting a plurality of tops that are rotatably connected to each other via connecting pins. This is characterized in that the nut insertion portions of the above are projected so as to come into contact with the outer surface of the adjacent tops, and the inner diameters of the nut insertion portions projected at the respective tops are changed. Further, in the present invention, the nut insertion portion may have a ratchet structure.

[0006]

[Action]

 When tightening the nut with the rotary connection type wrench of the present invention, the endlessly connected top is unfolded and rotated in the connecting direction to position the nut insertion part having the desired inner diameter at the tip side. After that, when the top pieces are folded, the top pieces and the bottom pieces come into close contact with each other, and the nut insertion portion that serves as a stopper comes into contact with the outer surface of the adjacent piece to form a rod-shaped grip portion.

As described above, when the required nut insertion portion is positioned at the tip, the grip portion is grasped by hand, the nut is inserted into the nut insertion portion and rotated, and the nut is tightened to the bolt. Fixed.

Further, in the case where the nut insertion part has a ratchet structure, continuous tightening can be performed by selecting the tightening rotating direction of the gripping part by switching the rotating direction and repeating the rotating operation. it can.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to FIGS. In the figure, reference numerals 1a, 1b ... Represent a rectangular frame, and as shown in FIG. 3, this frame has recesses 2 formed at both ends in the longitudinal direction. The connecting piece 3 is inserted into the two recesses 2 formed as described above, and is rotatably connected by the pins 4 ... In this manner, the tops 1a, 1b ... 1f are sequentially arranged as shown in FIG. It is connected endlessly.

Further, a protrusion 5 is provided at one end on the outer surface side of the tops 1a, 1b ... 1f connected endlessly, as shown in FIG. 4, and circular nut insertion portions 6b, 6c. 1b ... 1f are provided in parallel with each other. The lower surfaces of the nut insertion portions 6b, 6c ... Are provided so as to abut the outer surfaces of the adjacent tops 1a, 1b. Further, the inner diameter and the height of each nut insertion portion 6a, 6b ... 6f are respectively changed so as to be gradually decreased, and since the height is changed, the height of the protruding portion 5 which supports the nut insertion portion 6a, 6b, ... The lower surfaces of the portions 6a, 6b ... 6f are adapted to contact the outer surfaces of the adjacent tops 1b. Further, continuous chevron-shaped detents 7 are formed on the inner surfaces of the nut insertion portions 6a, 6b ... 6f.

When the nut 9 is tightened with the rotary connecting wrench having the above-mentioned structure, the end pieces 1a, 1b, ... 1f connected endlessly as shown in FIG. 5 are spread like a crawler belt and rotated in the connecting direction. 1f which are rotatably connected by means of a pin 4 rotate in the direction of the arrow to position the nut insertion portion 6a having a desired inner diameter on the tip side. After that, when the tops 1a, 1b, ... 1f are folded, as shown in FIG. 2, the tops 1a, 1b, 1c are located on the upper side and the tops 1d, 1e, 1f are located on the lower side, and the inner peripheral side is closely attached to form a rod-like shape. A grip 10 is formed.

At this time, the lower surfaces of the nut insertion portions 6b, 6c, 6e, 6f are adapted to contact the outer surfaces of the adjacent tops 1a, 1b, 1d, 1e, and the nut insertion portions 6b, 6C, 6e. , 6f serve as stoppers and do not rotate further inward, and the upper tops 1a, 1b, 1c and the lower tops 1d, 1e, 1f are in a straight shape and are in close contact with each other and stick to each other in a rod shape. Becomes

For this reason, the grip portion 10 does not move in the state of being in close contact with and sticking into a rod shape, and is in a state similar to a box wrench in which the nut insertion portion 6a and the nut insertion portion 6d are projected at both ends thereof as shown in FIG. become. In this way, when the required nut insertion portion 6a is positioned at the tip, the grip portion 10 is grasped by hand as shown in FIG. 2, and the nut 9 is inserted into the nut insertion portion 6a and rotated. The nut 9 is tightened and fixed to the bolt 11.

When the small nut 9 is tightened, it is unfolded and rotated again as shown in FIG. 5, the desired nut insertion portions 6b ... 6f are positioned on the tip side, and then folded to form the grip portion 10. .. When removing the nut 9, the grip 10 may be rotated in the opposite direction.

FIG. 6 shows another embodiment of the invention, in which the nut insertion portions 6a, 6b ... 6f have a ratchet structure provided with a claw wheel for preventing reverse rotation, and a rotation preventing projection 7 is formed on the inner circumference. The inner ring 12 is rotatably attached to the inner side of the outer ring 13, and the rotation direction switching rod 14 is switched to the left or right so that the tightening rotation direction of the grip portion 10 can be selected. 6F of the ratchet structure can be continuously tightened without removing the nut insertion parts 6a, 6b, ... Can be improved.

In the above-mentioned embodiment, the wrench in which the six pieces 1a, 1b, ... 1f are connected is shown. However, as long as it is 4 or more, any number of the wrenches may be connected. If there are nut insertion parts with different diameters, there is no problem in normal work.

[0017]

[Effect of the device]

 As described above, according to the rotary connection type wrench of the present invention, since a large number of nut insertion parts having different inner diameters are attached to one wrench, an optimum nut insertion part suitable for the size of the nut can be obtained. It is easy to select and has excellent workability, and since it is not bulky, it is easy to carry and store. Especially, in the case where the nut insertion part has a ratchet structure, continuous tightening is possible by repeating the rotating motion of the grip part. The workability can be further improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a rotary wrench according to an embodiment of the present invention.

FIG. 2 is a front view showing the rotary wrench of FIG.

FIG. 3 is a bottom view showing the main parts of the rotary connection type wrench of FIG.

4 is a vertical cross-sectional front view showing a main part of the rotary connection type wrench of FIG.

FIG. 5 is a front view showing a state in which the rotary connection wrench of FIG. 1 is rotated.

FIG. 6 is a plan view showing a ratchet type rotary connection type wrench according to another embodiment of the present invention.

[Explanation of sign]

 1a Top 1b Top 1f Top 2 Recess 3 Connection piece 4 Pin 5 Projection 6a Nut insertion 6b Nut insertion 6f Nut insertion 7 Rotation stop 9 Nut 10 Grip 11 Bolt 12 Inner ring 13 Outer ring 14 Rotation direction change rod

Claims (2)

[Scope of utility model registration request] 1. A plurality of tops in which adjacent tops are rotatably connected via a connecting pin are connected endlessly, and a nut is inserted into one end on the outer surface side of each endlessly connected top. A rotary connection type wrench characterized in that a circular nut insertion portion is provided so as to abut an outer surface of an adjacent piece, and an inner diameter of the nut insertion portion provided on each piece is changed. 2. The rotary coupling type wrench according to claim 1, wherein the nut insertion portion has a ratchet structure.