JP3212741U - Bicycle wheel mounting bracket - Google Patents

Abstract

Provided is a bicycle wheel mounting bracket for securely fixing a wheel without applying excessive tightening torque when mounting the wheel. An attachment fitting 1 comprising a nut 2, a shaft 3, and a counterbore fitting 4, wherein the nut 2 has a clamp mechanism for tightening a female screw portion of the shaft 3. A slit 21 is cut from the outer periphery 26 of the nut in the axial direction to reach the inner peripheral screw portion 27, and a female screw hole that passes through the slit 21 vertically and does not reach the outer periphery on the opposite side is opened from the outer periphery 26. When the bolt 23 is screwed and the small bolt 23 is tightened, the opening width of the slit 21 and the inner diameter of the inner screw part 27 are reduced, and the shaft 3 screwed into the inner screw part 27 is tightened in the radial direction. The clamping function of the nut 2 acts. The outer periphery of the nut 2 may be a curved surface or a plurality of continuous planes. Further, a second slit 22 may be provided as an extension of the slit 21. [Selection] Figure 1

Description

  The present invention relates to a bicycle wheel mounting bracket.

  A mounting bracket for an ordinary bicycle wheel is commercially available as “Skewer”. As shown in FIG. 4, the components are configured such that a tightening nut 6 and a counterbore bracket 4 are disposed at both ends of the shaft 3. When mounting, the shaft 3 passed through the hub of the wheel is fitted into the mounting notch on the frame side and tightened in the hub direction with the nut 6.

  The commercially available skewer described above requires a strong tightening torque because there is no locking mechanism when the wheel is tightened. For this reason, when tightening, there is a problem that excessive pressure is applied to the hub bearing and the rotation of the wheel becomes dull.

  In view of the above-described problems, an object of the present invention is to provide a bicycle wheel mounting bracket that can reliably fix a wheel without applying excessive tightening torque when the wheel is mounted.

  In order to solve the above problems, a bicycle wheel mounting bracket according to the present invention is a mounting bracket comprising a nut, a shaft, and a counterbore bracket, and the nut has a clamp mechanism for tightening a female screw portion of the shaft. It is characterized by that.

The nut of the bicycle wheel mounting bracket according to claim 1 has a curved outer periphery,
A slit reaching the inner peripheral screw portion in the axial direction from the outer periphery is cut, and a female screw hole that passes vertically through the slit from the outer periphery in the vicinity of the slit and does not reach the outer periphery opposite to the outer periphery is opened, A small bolt is screwed into the female screw hole, and by tightening the small bolt, the opening width of the slit and the inner diameter of the inner peripheral screw portion are reduced, and the shaft that is screwed into the inner peripheral screw portion is in the radial direction. By being tightened, the nut clamping function acts.

  The nut of the bicycle wheel mounting bracket according to claim 2 has a curved outer periphery similar to the nut according to claim 1, and a first slit reaching the inner peripheral screw portion in the axial direction from the outer periphery is cut, and the first A second slit that does not reach the outer periphery opposite to the outer periphery is cut from the inner peripheral screw portion on the extension of the first slit, and the first slit is perpendicular to the outer periphery in the vicinity of the first slit. A female screw hole that passes through and does not reach the outer periphery opposite to the outer periphery is opened, a small bolt is screwed into the female screw hole, and the first and second slits are opened by tightening the small bolt. The width and the inner diameter of the inner peripheral screw portion are reduced, and the shaft that is screwed into the inner peripheral screw portion is tightened in the radial direction, whereby the clamping function of the nut acts.

  The nut of the bicycle wheel mounting bracket according to claim 3 is composed of at least three planes having a continuous outer periphery, and a slit reaching an inner peripheral screw portion in an axial direction from one plane of the outer periphery is cut, and the nut in the vicinity of the slit is cut. A female screw hole that passes vertically through the slit from one plane of the outer periphery and does not reach the outer peripheral plane opposite to the plane of the outer periphery is opened, and a small bolt is screwed into the female screw hole, When the small bolt is tightened, the opening width of the slit and the inner diameter of the inner peripheral screw portion are reduced, and the shaft that is screwed into the inner peripheral screw portion is tightened in the radial direction so that the clamping function of the nut acts. .

  The nut of the bicycle wheel mounting bracket according to claim 4 comprises at least three planes having a continuous outer periphery as in the nut according to claim 3, and the first reaches the inner peripheral screw portion in the axial direction from one plane of the outer periphery. The second slit that does not reach the outer peripheral plane on the opposite side of the outer peripheral plane from the inner peripheral screw portion is cut on the extension of the first slit, and the first slit is cut. A female screw hole that passes through the first slit perpendicularly from one plane of the outer periphery in the vicinity and does not reach the outer peripheral plane on the opposite side to the plane of the outer periphery is opened, and a small bolt is formed in the female screw hole. When the small bolt is tightened, the opening width of the first and second slits and the inner diameter of the inner peripheral screw portion are reduced, and the shaft that is screwed into the inner peripheral screw portion is radially expanded. Tightened Clamping function of the nut acts by.

  By using the wheel mounting bracket according to the present invention, it is not necessary to tighten the nut with a strong torque in the axial direction, and the wheel can be fixed with an arbitrary torque. For this reason, excessive pressure is not applied to the hub bearing, and there is no fear that the rotation of the wheel becomes dull.

It is a photograph of the mounting bracket of this embodiment. It is a photograph of the nut with a clamp mechanism used for the mounting bracket of this embodiment. It is a perspective view of the nut with a clamp mechanism used for the mounting bracket of this embodiment. It is a photograph of a conventional mounting bracket.

  Hereinafter, the bicycle wheel mounting bracket of the present embodiment will be described with reference to the drawings. The bicycle wheel mounting bracket of the present embodiment (hereinafter simply referred to as “main mounting bracket”) is the mounting bracket according to claim 2.

  As shown in FIG. 4, the conventional mounting bracket 5 includes a nut 6, a shaft 3, and a countersunk bracket 4, and in mounting the wheel, the shaft 3 that is internally passed through the wheel hub is used as a mounting notch on the frame side. Fit and tighten with nut 6. That is, the wheel is fixed by sandwiching the wheel between the nut 6 and the counterbore bracket 4 and tightening the nut 6 with a strong torque. The reason why a strong torque is required is that the nut 6 does not have a locking mechanism. For this reason, excessive pressure is applied to the hub bearing by tightening, which causes a problem that the rotation of the wheel becomes dull.

On the other hand, as shown in FIG. 1, the present mounting bracket 1 includes a nut 2, a shaft 3, and a spot facing bracket 4, and is structurally similar to the conventional mounting bracket, but the nut 2 has a clamping mechanism. The feature is that it is attached and strong torque tightening in the wheel direction is unnecessary.

First, the structure of the nut 2 with a clamp mechanism will be described.
As shown in FIG. 3, the nut 2 of the mounting bracket 1 includes a first slit 21 that reaches the screw portion 27 from the outer periphery 26, and a second slit 22 that does not reach the outer periphery on the opposite side from the inner screw portion 27. Have. A notch 24 is formed in the vicinity of the first slit 21, and a female screw hole 25 for a small bolt is provided in the notch 24. The female screw hole 25 is formed so as to match the length of the small bolt 23 to be screwed and pass through the first slit 21 vertically and not reach the outer periphery on the opposite side.

Next, the clamping function of the nut 2 will be described.
FIG. 2 is a photograph of a state in which the small bolt 23 is screwed into the female screw hole 25 of the nut 2. The nut 2 is screwed onto the shaft 3 and tightened to some extent, and then the small bolt 23 is tightened. By tightening the small bolt 23, the opening width of the slits 21 and 22 is reduced, and at the same time, the inner diameter of the inner peripheral screw portion 27 is also reduced by the reduction of the opening width of the slit. As a result, the friction between the inner thread portion 27 and the shaft 3 is increased, and the shaft 3 and the nut 2 are fixed.

That is, in the conventional mounting bracket 5 (FIG. 4), the nut 6 is strongly tightened in the axial direction to prevent loosening, whereas in this mounting bracket 1 , the nut 2 (FIGS. 2 and 3) is connected to the shaft. Clamping 3 in the radial direction realizes a locking function.

The use of the mounting bracket 1 does not require a strong tightening torque when tightening the nut 2 and can be fixed with an arbitrary torque, so that the wheel can be fixed within a range not affecting the rotation.

  Although the features and excellent points of the mounting bracket of the present embodiment have been described as examples, the present invention is used in the claims of the utility model registration claims of the present application within the scope of the principle of the present invention. It is possible to carry out the words that have been widely expanded to the general meaning.

  For example, the nut 2 of the mounting bracket according to the present embodiment has a first slit and a second slit, but the nut 2 of the mounting bracket according to claim 1 and 3 reaches the screw portion 27 from the outer periphery 26. It has only one slit 21 and no second slit.

  Further, while the outer periphery of the nut of the present embodiment is a curved surface, the outer periphery of the nut of the mounting bracket according to claims 3 and 4 is composed of a plurality of continuous planes (so-called hexagon nuts or the like). It is understood that the implementation of these various embodiments is also included in the technical scope of the present invention unless it contradicts the wording described in the claims for utility model registration.

DESCRIPTION OF SYMBOLS 1 Mounting bracket 2 Nut 21 with a clamp mechanism 1st slit 22 2nd slit 23 Small bolt 24 Notch 25 Female screw hole 26 Outer periphery 27 Inner peripheral screw part 3 Shaft 4 Spot facing bracket 41 Spot facing part 5 Conventional mounting bracket 6 Nut of conventional mounting bracket

Claims (4)

A bicycle wheel mounting bracket comprising a nut, a shaft and a counterbore bracket, wherein the nut has a curved outer surface,
A slit is cut from the outer periphery to the inner screw part in the axial direction
A female screw hole that passes vertically through the slit from the outer periphery in the vicinity of the slit and does not reach the outer periphery opposite to the outer periphery is opened,
A small bolt is screwed into the female screw hole,
The mounting bracket is characterized in that when the small bolt is tightened, the opening width of the slit and the inner diameter of the inner peripheral screw portion are reduced, and the shaft that is screwed into the inner peripheral screw portion is tightened in the radial direction. A bicycle wheel mounting bracket comprising a nut, a shaft and a counterbore bracket, wherein the nut has a curved outer surface,
A first slit reaching the inner peripheral screw portion in the axial direction from the outer periphery is cut,
On the extension of the first slit, a second slit that does not reach the outer periphery on the side opposite to the outer periphery is cut from the inner peripheral screw portion,
A female screw hole that passes vertically through the first slit from the outer periphery in the vicinity of the first slit and does not reach the outer periphery opposite to the outer periphery is opened,
A small bolt is screwed into the female screw hole,
By tightening the small bolt, the opening width of the first and second slits and the inner diameter of the inner peripheral screw portion are reduced, and the shaft screwed into the inner peripheral screw portion is tightened in the radial direction. And mounting bracket. A bicycle wheel mounting bracket comprising a nut, a shaft and a counterbore bracket, wherein the nut is composed of at least three planes having a continuous outer periphery,
A slit that reaches the inner peripheral screw portion in the axial direction from one plane of the outer periphery is cut,
A female screw hole that passes through the slit perpendicularly from one plane of the outer periphery in the vicinity of the slit and does not reach the outer peripheral plane on the opposite side of the plane of the outer periphery is opened,
A small bolt is screwed into the female screw hole,
The mounting bracket is characterized in that when the small bolt is tightened, the opening width of the slit and the inner diameter of the inner peripheral screw portion are reduced, and the shaft that is screwed into the inner peripheral screw portion is tightened in the radial direction. A bicycle wheel mounting bracket comprising a nut, a shaft and a counterbore bracket, wherein the nut is composed of at least three planes having a continuous outer periphery,
A first slit reaching the inner peripheral screw portion in the axial direction from one plane of the outer periphery is cut,
A second slit that does not reach the outer peripheral plane on the opposite side of the outer peripheral plane from the inner peripheral screw portion is cut on the extension of the first slit,
A female screw hole that passes vertically through the first slit from the one outer peripheral plane in the vicinity of the first slit and does not reach the outer peripheral plane on the opposite side of the outer peripheral plane is opened,
A small bolt is screwed into the female screw hole,
By tightening the small bolt, the opening width of the first and second slits and the inner diameter of the inner peripheral screw portion are reduced, and the shaft screwed into the inner peripheral screw portion is tightened in the radial direction. And mounting bracket.