JP3561306B2 - Wrench and bolts and nuts - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bolt and a nut used for fastening members and a spanner dedicated to the bolt and nut.
[0002]
[Prior art]
Conventionally, bolts and nuts of this type have been tightened and loosened by turning the bolts and nuts as hooks for spanners by providing polygons such as hexagons, grooves or notches on the outer periphery. I was
[0003]
[Problems to be solved by the invention]
However, when the bolt or the nut is provided with the hook portion of the spanner, the hook portion is crushed by repeated use. The manufacturing cost for providing the hook portion is increased. The provision of the hook reduces the strength. The outer diameter increases due to the provision of the hook. The operability is poor because the spanner fits the hook. You need a wrench of each size suitable for each size. When used for decorative articles, the appearance is impaired. When used for a rotating body, it becomes a factor of imbalance. There were many problems.
[0004]
[Means for Solving the Problems]
As a means for solving the above problems, the present invention provides a bolt having a flat tapered surface with a tapered tip on the outer periphery of the head or a flat tapered surface with one end tapered on the outer periphery. A wrench for rotating and tightening the nut, and a wrench and a bolt, wherein the tapered surface is a bolt formed on the outer peripheral portion of the head, and the inner peripheral surface is the head of the bolt. A spanner main body having a taper having an angle matching the taper surface or the taper surface of the nut; rotatably held by the spanner main body; an inner peripheral surface of the spanner main body and a taper surface of the head of the bolt or a taper surface of the nut; And a holding member that holds the rolling member so that the rolling member can roll with a tilt angle in both left and right directions. With By rotating the spanner body in one direction or the opposite direction, the rolling member is restrained between the tapered surface and the inner peripheral surface of the spanner body at an inclination angle corresponding to the rotation direction. And a rotation transmitting unit that transmits the rotational force of the spanner body to the bolt or the nut.
[0005]
In addition, the present invention is to rotate and fasten a bolt having a flat tapered surface with a tapered tip on the outer peripheral portion of the head or a flat tapered surface with one end tapered on the outer peripheral portion. A wrench and a nut, wherein the tapered surface has a nut formed on the outer peripheral portion, wherein the inner peripheral surface has an angle matching the tapered surface of the head of the bolt or the tapered surface of the nut. A wrench body having a wrench, rotatably held by the wrench body, disposed between the inner peripheral surface of the wrench body and the tapered surface of the head of the bolt or the tapered surface of the nut, and rolled with an inclination angle. A rolling member that moves, and a holding member that holds the rolling member so that the rolling member can roll with an inclination angle in both the left and right directions. Reverse By rotating in the direction, the rolling member is constrained between the tapered surface and the inner peripheral surface of the spanner main body at an inclination angle in a direction corresponding to the rotation direction, whereby the rotational force of the spanner main body is reduced. It is characterized in that it has a rotation transmitting portion that is transmitted to a bolt or a nut.
[0006]
According to the present invention, the inner peripheral portion of the spanner main body is fitted to the outer peripheral portion of a bolt or nut, and the rolling member that rolls at an inclined angle by rotating the spanner main body in one direction is provided by a bolt or a bolt. The wrench is constrained between the outer peripheral surface of the nut and the inner peripheral surface of the spanner body, whereby the wrench and the bolt or nut are integrated in the direction, and the bolt or nut can be rotated in the direction via the spanner body. it can. Therefore, it is not necessary to provide a hook or the like with a spanner in the tightening portion of the bolt or the nut, and the shape can be a conical shape formed by a flat surface.
[0007]
The front kiss Pana includes a holding member prior Symbol rolling member holding the rolling member to allow roll with an inclination angle in the left and right directions, one direction or the other thereof wrench body The operability is further improved by providing a rotation transmitting portion to which the rotational force is transmitted by the rotation to the rotation direction.
[0008]
【Example】
Hereinafter, the present invention will be described based on embodiments shown in the drawings. FIG. 1 shows an embodiment in which the present invention is applied to a bolt 1 having a head 4. At the base end of the bolt 1, a seating surface 6 necessary for mounting the bolt 1 and a head 4 larger than the outer diameter of the screw portion 5 for providing a hook for a spanner are formed. Conventionally, in order to tighten the head 4 with a spanner, a polygon such as a hexagon 14 as shown in FIG. 8, a polygon such as a hexagon on the inner periphery, or a concave portion having a plus or minus shape is used as an alternative method. To form a hook for a spanner. In the present invention, a flat tapered surface 7 having a tapered tip side is formed on the outer peripheral portion of the head 4 corresponding to a hook portion of the spanner, and the tapered surface 7 is a fastening portion of the dedicated spanner 3.
[0009]
The embodiment shown in FIG. 2 is an embodiment in which the present invention is applied to a nut 2. Conventionally, a polygon such as a hexagonal shape 15 as shown in FIG. 9 or a hook groove is formed on the outer periphery of the nut 2 to be tightened with a spanner, so as to be a hook portion of the spanner. In the present invention, a flat tapered surface 7 having one end tapered is formed on an outer peripheral portion corresponding to a hook portion of the spanner, and the tapered surface 7 serves as a fastening portion of the dedicated spanner 3.
[0010]
FIG. 3 shows a dedicated spanner 3 for inserting the bolt 1 or the nut 2 into the tapered surface 7 and rotating the bolt 1 or the nut 2 for fastening. The inner peripheral surface 12 of the spanner main body 10 has a tapered surface having an angle matching the tapered surface 7, and a plurality of cylindrical rolling members 8 are disposed on the inner peripheral portion at appropriate intervals in the circumferential direction. Is interposed. The rolling member 8 is rotatably held by a spanner main body 10 by a holding member 9, and includes a handle 11 provided integrally with the spanner main body 10.
[0011]
Next, the operation of the present embodiment will be described using an example of the nut 1 and the spanner 3. First, as shown in FIG. 4, the opening of the spanner main body 10 is fitted to the outer peripheral tapered surface 7 of the nut 2. At this time, since the opening of the spanner main body 10 is larger than the tapered portion on the insertion side of the nut 2, it can be easily mounted. Since the tapered surface 7 of the nut 2 is formed flat, it has a circular shape like a conventional spanner. There is no need to adjust the position.
[0012]
After the spanner 3 is mounted, the spanner body 10 is rotated clockwise, so that the rolling member 8 revolves around the tapered surface 7 while rotating. Since the rolling member 8 is arranged with an inclination angle as shown in FIG. 6, the rolling member 8 spirally moves up the tapered surface 7 while rolling, and the spanner main body 10 moves in the leftward direction in FIG. Go to
[0013]
Since the inner peripheral surface 12 of the wrench main body 10 and the outer peripheral taper surface 7 of the nut 2 are tapered surfaces having the same angle, when the wrench main body 10 moves leftward in FIG. Between the inner peripheral surface 12 and the outer peripheral tapered surface 7 of the nut 2 by a wedge effect, the spanner main body 10 and the nut 2 are integrated, and the rotation of the spanner main body 10 is transmitted to the nut 2.
[0014]
When the spanner 3 is removed from the nut 2, by rotating the spanner body 10 counterclockwise from the above state, the rolling member 8 rolls down the tapered surface 7 while rolling, and the nut 2 In contrast, the spanner main body 10 moves to the right from the state shown in FIG. 5, so that a space is created between the inner peripheral surface 12 of the spanner main body 10 and the outer peripheral tapered surface 7 of the nut 2, and the rolling restrained by the wedge effect. The moving member 8 becomes free, and the spanner 3 and the nut 2 are separated.
[0015]
The above operation is an operation in which the nut 2 is rotated clockwise and tightened. However, in a case where the nut 2 is rotated counterclockwise and loosened, the rolling with an inclination angle opposite to that of FIG. By arranging the member 8, even when rotating counterclockwise, the spanner main body 10 and the nut 2 are integrated by the same principle, and the rotation of the spanner main body 10 is transmitted to the nut 2.
[0016]
As a method of holding the rolling member 8, the wrench 3 in which the rolling member 8 having the inclination angle as shown in FIG. The wrench 3 with the rolling member 8 having the inclination angle opposite to that of FIG. 6 is used as the “tightening” wrench 3 to be used by rotating it counterclockwise. There are ways to use them properly.
[0017]
As another method of holding the rolling member 8, as shown in FIG. 7, the notch 13 of the holding member 9 for holding the rolling member 8 is formed in a sector shape, and the spanner body 10 is rotated in one direction. As a result, the rolling member 8 revolves helically with respect to the tapered surface 7 while rotating in rotation in one direction starting from the root of the sector-shaped notch 13 and rotating the spanner body 10 in the opposite direction. As a result, the rolling member 8 revolves while being inclined in the opposite direction, so that the tightening operation and the loosening operation can be shared by one wrench.
[0018]
As described above, according to the present embodiment, by making the tightening portion of the nut 2 tapered, not only mounting becomes easy, but also the tapered portion of the nut 2 and the spanner body 10 via the rolling member 8. Nuts 2 of different sizes can be tightened with one spanner 3 as long as they are in the meshing range. Even if the tapered portions of the nut 2 and the spanner 3 are worn by repeated use, tightening is possible as long as the nut 2 and the tapered portion of the spanner main body 10 are engaged with each other via the rolling members 8.
[0019]
In addition, when providing a hook for the spanner, the shape becomes complicated and the processing cost increases. "The thickness of the hook for the spanner decreases and the strength decreases." There are a number of problems, such as "increases in size,""when used for decorative items, etc., impairs the appearance due to the limitation of the shape due to the provision of hooks for the wrench." The use of a tapered surface 7 can solve all of these problems.
[0020]
Further, when the nut 2 is used by being attached to a rotating body, even if the shape is symmetrical in order to provide a hook portion for the spanner, the balance accuracy is deteriorated as compared with the cylindrical or conical shape due to an error in the processing accuracy. In the case of use at high speed rotation, loosening and vibration may be caused. However, the flattened tapered surface 7 of the nut 2 eliminates the cause of unbalance and can be used without problem even at high speed rotation.
[0021]
In this embodiment, the handle 11 for rotating the spanner main body 10 is provided at one place on the spanner main body 10, but it is not necessary to limit to this as long as the spanner main body 10 can be rotated. It may be provided. Further, in the present embodiment, the rolling member 8 is formed in a columnar shape. However, the present invention is not limited to this. For example, a spherical member may be used as long as it rolls.
[0022]
Further, in the present embodiment, the tapered surface 7 of the nut 2 is formed flat and is not subjected to knurling or the like. However, the present invention is not limited to this, and the rolling member 8 does not hinder the rolling. Irregularities may be present. Further, in the present embodiment, the holding member 9 in which the notch 13 is formed in a sector shape is used. However, the present invention is not limited to this. Any method may be used as long as the member 8 performs the function of revolving spirally with respect to the tapered surface 7 of the nut while rotating.
[0023]
In the above embodiment, general bolts 1 and nuts 2 are taken as an example. However, the present invention is not limited thereto. For example, a needle roller may be used instead of a bag-like nut or a screw at an inner diameter portion as shown in FIG. The special nut 18 for disposing the member 16 and rolling on the tapered surface 17 of the mating member can be applied to any nut that transmits torque.
[0024]
【The invention's effect】
As described above, according to the present invention, the wrench is easily attached to the bolts and nuts, the operability is good, the processing of the tightening portion is simplified, the strength is increased, and the external shape is improved, and the high speed is achieved. Bolts and nuts that can be used for a rotating body can be provided.
[Brief description of the drawings]
FIG. 1 is a side view of a bolt according to the present invention.
FIG. 2 is a half sectional view of a side surface of the nut of the present invention.
FIG. 3 is a side sectional view of the spanner of the present invention.
FIG. 4 is a side sectional view showing a state where the spanner of the present invention is attached to a nut.
FIG. 5 is a side sectional view showing a state in which a nut is tightened by the spanner of the present invention.
FIG. 6 is a diagram illustrating a state of a rolling member when a nut is tightened with the spanner of the present invention.
FIG. 7 is a diagram illustrating a method of holding the rolling member of the spanner in a state of being inclined left and right according to the present invention.
FIG. 8 is a perspective view of a conventional bolt.
FIG. 9 is a perspective view of a conventional nut.
FIG. 10 is a diagram of a conventional nut having a needle roller instead of a screw on the inner diameter portion.
[Explanation of symbols]
Reference Signs List 1 bolt 2 nut 3 spanner 7 taper surface 8 rolling member 9 holding member 10 spanner body 16 needle roller

Claims (2)

A wrench for rotating and fastening a bolt having a flat tapered surface with a tapered front end formed on the outer peripheral portion of the head or a nut having a flat tapered surface with one end tapered on the outer peripheral portion,
  A spanner and a bolt having the tapered surface and a bolt formed on an outer peripheral portion of the head,
  A spanner body having an inner peripheral surface having a taper at an angle matching the taper surface of the head of the bolt or the taper surface of the nut;
  A rolling member rotatably held by the spanner body, disposed between the inner peripheral surface of the spanner body and the tapered surface of the head of the bolt or the tapered surface of the nut, and rolling with an inclination angle; ,
  A holding member that holds the rolling member so that the rolling member can roll with an inclination angle in both the left and right directions,
  By rotating the spanner body in one direction or the opposite direction, the rolling member is restrained between the tapered surface and the inner peripheral surface of the spanner body at an inclination angle in a direction corresponding to the rotation direction. A wrench and a bolt having a rotation transmitting portion for transmitting a rotational force of the spanner body to the bolt or the nut. A wrench for rotating and fastening a bolt having a flat tapered surface with a tapered front end formed on the outer peripheral portion of the head or a nut having a flat tapered surface with one end tapered on the outer peripheral portion,
  A spanner and a nut having the tapered surface and a nut formed on the outer peripheral portion,
  A spanner body having an inner peripheral surface having a taper at an angle matching the taper surface of the head of the bolt or the taper surface of the nut;
  A rolling member rotatably held by the spanner body, disposed between the inner peripheral surface of the spanner body and the tapered surface of the head of the bolt or the tapered surface of the nut, and rolling with an inclination angle; With
  A holding member that holds the rolling member so that the rolling member can roll with an inclination angle in both the left and right directions,
  By rotating the spanner body in one direction or the opposite direction, the rolling member is restrained between the tapered surface and the inner peripheral surface of the spanner body at an inclination angle in a direction corresponding to the rotation direction. A wrench and a nut having a rotation transmitting portion for transmitting a rotational force of the spanner body to the bolt or the nut.

Images