JP3006817U - Bicycle wheel push - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if there is a finishing error or distortion or deformation of quenching in each part at the hub or hanger part, the blurring in the center line direction at the time of rotation due to them is automatically Absorbs, eliminates clogging of bearing balls and sticking, and smooths the rotation. [Structure] Push the hub or hanger onto the center line X
The ball pushing member 1 and the tightening member 2 are divided into two parts in the direction, and the ball pushing member 1 has a through hole 7 slightly larger than the outer diameter of the shaft 5 in the center, and the ball pushing surface. 4 is formed with a concave spherical surface 8 and a radial chrysanthemum portion 9 is formed on the concave spherical surface 8. On the other hand, the tightening member 2 has a female screw portion 6 that can be screwed onto the shaft 5 at the center. And the concave spherical surface 8
The front surface facing the concave spherical surface 8 can be engaged with the concave spherical surface 8.
In addition to the above, the convex spherical surface 10 is formed with the chrysanthemum portion 11 which can be engaged with the chrysanthemum portion 9 of the concave spherical surface 8. Further, the peaks and valleys of both chrysanthemum seat portions 9 and 11 are formed into a line contact shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bicycle ball pusher, and particularly to an improvement of a ball pusher on a hub or a hanger part, which is characterized by enabling smooth rotation of a bearing ball by eliminating the roughness and clogging of a bearing ball during rotation. is there.

[0002]

[Prior art]

 The front and rear hubs and hangers of the bicycle are parts that rotate at a considerable speed during driving. The hub structure is rotatably supported by a ball bearing in which a hub body and a hub shaft inserted therein are interposed between the left and right hooks and the ball pusher. The structure of the other hanger part is a ball bearing in which a hanger and a crankshaft inserted in the hanger are interposed between the left and right wheels and the ball pusher, and are rotatably supported. (For example, for hubs, see Japanese Industrial Standards Collection-Bicycle Edition (1982) Page 156, Bicycle Industry Promotion Association, see Hanger section, Japanese Utility Model Publication No. 57-174187).

[0003]

[Problems to be solved by the device]

 By the way, for example, a hub shaft, a crank shaft, or a ball push screwed onto the hub shaft has a slight distortion or deformation due to a finishing error in cutting or quenching. Slight distortion and deformation also occur when the mat is driven into the hub or hanger body and fixed.

Due to the errors, deformations, and distortions of the respective parts of the hub and hanger, the hub and hanger that are rotating are slightly wavy in the center line direction (axial direction). The ball rolling pressure on the bearing balls is also uneven between the bowl and the ball pushing. Therefore, during rotation, the hub or hanger part often causes ball clogging or scoring, which hinders smooth rotation.

The present invention is intended to solve the above problems in the hub and hanger portion of the bicycle. That is, the object of the present invention is to automatically absorb the finishing error of cutting work and the distortion / deformation caused by quenching in each part in the hub and the hanger part, and the ball clogging. The purpose of the present invention is to provide a bicycle wheel push that keeps the rotation always smooth by preventing the occurrence of sticking and sticking.

[0006]

[Means for Solving the Problems]

 I The first aspect of the bicycle ball pushing device according to the present invention is to divide the ball pushing device A into two in the direction of the center line X thereof and to make a ball pushing member 1 having a ball pushing surface 4 facing the bearing ball 12 in the bowl 3. , The female screw portion 6 to be screwed onto the shaft 5 and the tightening member 2,

The ball pushing member 1 has a through hole 7 which is slightly larger than the outer diameter of the shaft 5 in the center, and a rear side surface opposite to the ball pushing surface 4 is formed into a concave spherical surface 8. Forming a chrysanthemum portion 9 having a large number of irregularities on 8 in a radial pattern,

On the other hand, in the tightening member 2, the surface facing the concave spherical surface 8 of the ball pushing member 1 is formed into a convex spherical surface 10 engageable with the concave spherical surface 8, and the concave spherical surface 10 is concaved. The chrysanthemum seat portion 11 that can be engaged with the chrysanthemum seat portion 9 of the spherical surface 8 is formed.

II The second aspect of the bicycle ball pushing device according to the present invention is to divide the ball pushing device A into two in the direction of the center line X thereof and to have a ball pushing surface 4 facing the bearing ball 12 in the bowl 3. The member 1 and the tightening member 2 having the female screw portion 6 to be screwed onto the shaft 5,

The ball pushing member 1 has a through hole 7 which is slightly larger than the outer diameter of the shaft 5 in the center, and a rear side surface opposite to the ball pushing surface 4 is formed into a concave spherical surface 8. Forming a chrysanthemum portion 9 having a large number of irregularities on 8 in a radial pattern,

On the other hand, in the tightening member 2, the surface facing the concave spherical surface 8 of the ball pushing member 1 is formed into a convex spherical surface 10 that can be engaged with the concave spherical surface 8, and the concave spherical surface 10 has the concave surface. Forming a chrysanthemum portion 11 that can be engaged with the chrysanthemum portion 9 of the spherical surface 8,

Further, the shapes of the concave and convex portions of the chrysanthemum seat portion 9 of the ball pushing member 1 and the chrysanthemum seat portion 11 of the tightening member 2 are formed so that the peaks and valleys are in line contact with each other when meshed. It will be.

In the above structure, the bicycle ball pusher A according to the present invention includes two types for the hub, one for the front hub and the other for the rear hub, and also for the hanger part. Is the same. A lubricating synovium is formed by grease or other lubricant between the contact portions of the chrysanthemum portion 9 of the ball pushing member 1 and the chrysanthemum portion 11 of the tightening member 2 in order to improve sliding. It is desirable that the length of each chrysanthemum seat portion 9 and 11 in the radial direction is not more than one half of the radius by notching near the inner circumference. It is not limited.

In the figure, 13 is a hub body, 14 is a hanger body, 15 is a washer, 16 is an inner nut, and 17 is a tightening nut.

[0015]

[Action]

 a) To assemble the bicycle ball pushing device A according to the present invention to the hub or the hanger portion, the following steps should be performed.

A large number of bearing balls 5 are engaged in the hub or hanger 3 of the hanger portion, and first of all, in the ball pushing A according to the present invention, the ball pushing member 1 is provided with a central through hole 7 to form a shaft 5. The ball pushing surface 4 is brought into contact with the ball 5. At this time, the concave spherical surface 8 and the chrysanthemum portion 9 of the ball pushing member 1 face outward.

Next, from the outside, the tightening member 2 is screwed onto the shaft 5 by the central female screw portion 6, and the convex spherical surface 10 of the tightening member 2 is engaged with the concave spherical surface 8 of the ball pushing member 1. Put in a state. Then, by adjusting the screwing of the tightening member 2, the ball pushing surface 4 of the ball pushing member 1 contacts the bearing ball 12 appropriately, and in that state, the chrysanthemum seat portions 9 and 11 of both members 1 and 2 are engaged. By assembling, the assembly work is completed (see FIGS. 1, 2, and 7).

B) Next, the rotation of the hub and the hanger portion using the bicycle ball pushing device A according to the present invention is as follows.

During traveling of the bicycle, the shaft 5 and the ball pusher A do not rotate in the front or rear hub, but the hub body 13 rotates and the bowl 3 integrated with it rotates. Further, in the hanger part, the hanger body 14 and the bowl 3 do not rotate, but the shaft 5 rotates and the ball push A integral with it rotates.

In the conventional case, if there is an error in cutting or a distortion / deformation due to hardening in the bowl pushing, a slight waviness is generated in the center line direction during rotation, The ball pressure against the bearing ball fluctuated between the pushing and the ball pushing, the ball did not rotate smoothly, and the ball was clogged or slagged.

However, the ball pushing A of the present invention is divided into two in the direction of the center line X as described above, and is constituted by the ball pushing member 1 and the tightening member 2, and the ball pushing member 1 has the shaft 5 at the center. A through hole 7 slightly larger than the outer diameter, a concave spherical surface 8 on the rear side, and a radial chrysanthemum seat portion 9 are formed, and the tightening member 2 has a female screw portion 6 which can be screwed to the shaft 5 in the center. The convex spherical surface 10 that can be engaged with the concave spherical surface 8 forms a chrysanthemum portion 11 that can be engaged with the chrysanthemum portion 9 of the concave spherical surface 8.

Therefore, the ball pushing member 1 of the ball pushing A slightly shifts its center line X along the concave / convex spherical surfaces 8 and 10 between the tightening member 2 and the chrysanthemum seat portions 9 and 11. However, it can swing independently (see Fig. 3). Even if the hub 3 and the hanger 4 have rotating parts, such as cutting errors, distortions, and deformations, which cause waviness in the rotating hub 3 and hanger 4 As a result, the ball pushing member 1 only swings independently, and does not affect others.

Since the concave spherical surfaces 8 of the ball pushing member 1 and the convex spherical surfaces 9 and 11 of the convex spherical surface 11 of the tightening member 2 are also formed in a concave / convex spherical shape, the ball pushing member 1 is concave / convex. It swings well along the convex spherical surfaces 8 and 11. In addition, a lubricating film is formed on the contact portions of both chrysanthemum seat portions 9 and 11, and the shape of each concavo-convex portion of both chrysanthemum seat portions 9 and 11 as in the second aspect of the present invention is set so that the contact area during engagement is large. With a shape in which the peaks and valleys are in line contact with each other so that the value becomes smaller, it becomes easier to swing.

Therefore, the wavy blurring of the hub case 3 and the hanger portion 4 of the hanger is absorbed by the independent swinging of each of the ball pushing members 1, and the ball rolling pressure on the bearing balls 12 is uniform. Therefore, the ball 12 does not become clogged or sticky, and the ball 12 always rotates smoothly.

[0025]

【Example】

 1 to 6 show an embodiment in which the bicycle ball pushing device A according to the present invention is used for a front hub (the structure is almost the same when used for a rear hub, so the description thereof is omitted). .

Hub hollows are provided on both sides of the hollow horizontally elongated hub body 13, respectively, and the shaft 5 of the hub is inserted thereinto, and the bearing balls 12 are engaged in the hollows of the respective hubs. The hub ball push A according to the present invention is screwed on both sides of the hub shaft 5. In the illustrated example, the hub case 3 is formed separately from the hub body 13 and is fixed to both sides of the hub body 13, but may be integrally formed with the hub body 13.

Unlike the conventional integrated member, the ball pushing A of the hub is divided into two in the center line X direction, and the ball pushing member 4 has the ball pushing surface 4 facing the bearing ball 12 in the hub housing 1. And a tightening member 2 having a female screw portion 6 for screwing onto the hub shaft 5, and the two members 1 and 2 are neither flat nor tapered, and have a concave spherical surface and a convex surface. It is in contact with the spherical surface.

That is, the ball pushing member 1 of the ball pushing A has a through hole 7 having an inner diameter slightly larger than the outer diameter of the shaft 5 so that it can be fitted in the hub shaft 5 with a margin at the center. Further, the rear side surface opposite to the ball pushing surface 4 is formed as a concave spherical surface 8, and the concave spherical surface 8 is formed with a plurality of chrysanthemum portions 9 having a plurality of uneven portions radially.

On the other hand, the tightening member 2 of the ball pushing member A forms a surface facing the concave spherical surface 8 of the ball pushing member 1 into a convex spherical surface 11 engageable with the concave spherical surface 8 and On the spherical surface 11, a chrysanthemum seat portion 11 having a large number of concavo-convex portions is formed so as to be able to mesh with the chrysanthemum seat portion 9 of the concave spherical surface 8.

The distance between the concave and convex spherical surfaces 8 and 10 of the ball pushing member 1 and the tightening member 2 and the concave and convex portions of the chrysanthemum portions 9 and 11 is about 1 mm here, but it may be a large number. However, it is not limited to this (see Fig. 6.5).

FIG. 7 shows an embodiment in which the bicycle ball pusher A according to the present invention is used in the hanger portion. The hanger bowls 3 are driven and fixed on both sides of the hollow horizontally elongated hanger body 14, and the bearing balls 12 are rotatably engaged in the hanger bowls 3 and the crank shaft 5 is inserted. Ball pushers A of hangers are screwed from the respective outer sides of the shaft 5.

Unlike the conventional general hanger pusher A, the hanger pusher A is divided into two in the center line X direction, and has a ball push member 1 having a ball push face 4 facing the bearing ball 12, The shaft 5 of the rank is constructed separately from the tightening member 2 having the female screw portion 6 for screwing, and the both members 1 and 2 are not flat or tapered, but contact with a concave or convex spherical surface. There is.

That is, the ball pushing member 1 of the above-mentioned ball pushing A has a through hole 7 having an inner diameter slightly larger than the outer diameter of the crank shaft 5 so that it can be fitted to the crank shaft 5 with a margin at the center. A rear side surface opposite to the pressing surface 4 is formed as a concave spherical surface 8, and the concave spherical surface 8 is formed with a plurality of chrysanthemum portions 9 having a plurality of uneven portions radially.

On the other hand, the tightening member 2 of the ball pushing A forms a surface facing the concave spherical surface 8 of the ball pushing member 1 into a convex spherical surface 10 engageable with the concave spherical surface 8 and On the spherical surface 10, a chrysanthemum seat portion 11 having a large number of concavo-convex portions is formed radially so as to be able to mesh with the chrysanthemum seat portion 9 of the concave spherical surface 8.

The interval between the concave and convex spherical surfaces 8 and 10 of the members 1 and 2 and the concave and convex portions of the chrysanthemum portions 9 and 11 is also set to about 1 mm. is not.

FIG. 8 shows an enlarged cross-sectional shape of each concavo-convex portion of the chrysanthemum seat portion 9 of the ball pushing member 1 and the chrysanthemum seat portion 11 of the tightening member 2 in the second embodiment of the present invention. In order to make the peaks and troughs of each concavo-convex portion line-contact with each other in the meshed state, here, the chrysanthemum seat portion 9 of the ball pushing member 1 is formed such that each concave portion is a trapezoidal sectional concave portion and each convex portion is a narrow tooth width cross section It is formed on a rectangular convex portion.

[0037]

[Effect of device]

 As is clear from the above, according to the bicycle wheel pushing device of the present invention, even if finishing errors of cutting work and distortion / deformation due to quenching remain in each component of the hub and the hanger, they are not It is possible to automatically absorb the blurring in the direction of the center line caused by the cause, eliminate the clogging of the bearing ball and the sticking, and make the rotation always smooth.

That is, generally, the hub and the hanger portion have a ball stamp, a bowl, and the like, which have a finishing error in cutting and distortion / deformation due to quenching. As it is deformed, it is wavy in the direction of the center line during rotation. As a result, the ball pressure against the bearing ball becomes uneven between the ball pushing and the ball, and the hub and hanger parts are clogged with the ball or sticking during rotation, which hinders smooth rotation.

However, the ball pushing device according to the present invention is divided into two in the direction of the center line as described above, and is constituted by the ball pushing member and the tightening member, and the ball pushing member is slightly larger than the outer diameter of the shaft at the center. Through hole, and a concave spherical surface on the rear side that is radial, and the tightening member has a female screw that can be screwed into the shaft in the center and a convex spherical surface that can be engaged with the concave spherical surface and the spherical surface. Form a radial chrysanthemum seat.

Therefore, even if a wavy shake occurs in the bowl or the ball push at the time of rotation due to an error in cutting, distortion, deformation, etc. at the hub or hanger, the ball push member according to the present invention can be Along with the convex spherical surface and the concave spherical surface between the tightening member, the center line can be slightly slanted and can be independently swung, and the other can be absorbed without affecting the others.

Therefore, the wavy movement of the ball pushing the hub or the hanger portion is absorbed by the single swing of the ball pushing member, and the ball rolling pressure on the bearing balls can be maintained uniformly. It does not cause stickiness or stickiness, and can always maintain a smooth rotation.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of a right side portion of an embodiment in which a bicycle ball pushing device according to the present invention is used for a front hub.

FIG. 2 is a partially cutaway plan view of a left side portion of the bicycle hub control according to the present invention using a front hub.

FIG. 3 is an enlarged plan view showing an operating state of the embodiment shown in FIG.

FIG. 4 is an enlarged transverse plan view of the bicycle wheel pushing device of the embodiment shown in FIG.

FIG. 5 is a side view showing a concave spherical surface side of the tightening member for pushing the bicycle ball shown in FIG.

6 is a side view showing the concave spherical surface side of the ball pushing member of the bicycle ball pushing shown in FIG. 4. FIG.

FIG. 7 is a partially cutaway plan view of the right side portion of the embodiment in which the bicycle ball pushing device according to the present invention is used for the hanger portion.

FIG. 8 is another embodiment of the bicycle wheel pushing device according to the present invention,
It is a partial expanded sectional view when each chrysanthemum seat part of a ball pushing member and a tightening member has meshed.

[Explanation of symbols]

A-Bamboo ball pusher 1-Boom pusher member 2-Tightening member 3-Wooden 4-Brushing face 5-Axis 6-Female screw portion 7-Through hole 8-Concave spherical surface 9-Chrysanthemum portion 10-Convex spherical surface 11 -Chrysanthemum seat 12-Bearing ball 13-Hub body 14-Hanger body 15-Washer 16-Medium nut 17-Tightening nut X-Center line

Claims (2)

[Scope of utility model registration request] 1. A bicycle ball pushing device A is divided into two parts in a direction of a center line X thereof, and a ball pushing member 1 having a ball pushing surface 4 facing a bearing ball 12 in a bowl 3 is screwed to a shaft 5. The ball pushing member 1 has a through hole 7 which is slightly larger than the outer diameter of the shaft 5 in the center, and the ball pushing surface 4 and The opposite rear side surface is formed into a concave spherical surface 8 and the chrysanthemum seat portion 9 having a large number of concave and convex portions is formed radially on the concave spherical surface 8. On the other hand, the tightening member 2 is the concave portion of the ball pushing member 1. Spherical surface 8
A surface facing to the concave spherical surface 8 is formed into a convex spherical surface 10 which can be engaged with the concave spherical surface 8, and a concave seat portion 11 which can be engaged with the concave seat portion 9 of the concave spherical surface 8 is formed on the convex spherical surface 10. A bicycle wheel featured with. 2. A bicycle ball pushing member A is divided into two in the direction of the center line X, and a ball pushing member 1 having a ball pushing surface 4 facing the bearing ball 12 in the bowl 3 is screwed to a shaft 5. The ball pushing member 1 has a through hole 7 which is slightly larger than the outer diameter of the shaft 5 in the center, and the ball pushing surface 4 and The opposite rear side surface is formed into a concave spherical surface 8 and the chrysanthemum seat portion 9 having a large number of concave and convex portions is formed radially on the concave spherical surface 8. On the other hand, the tightening member 2 is the concave portion of the ball pushing member 1. Spherical surface 8
Is formed on the convex spherical surface 10 that can be engaged with the concave spherical surface 8, and the convex spherical surface 10 is formed with a chrysanthemum portion 11 that can be engaged with the chrysanthemum portion 9 of the concave spherical surface 8. In addition, the shape of each concavo-convex portion of the chrysanthemum seat portion 9 of the ball pushing member 1 and the chrysanthemum seat portion 11 of the tightening member 2 is formed in a shape in which peaks and valleys are in line contact with each other when engaged. To do
Cycling for bicycles.