JP3053223U - An extension device that can be attached almost vertically to the lateral handlebar of the bicycle - Google Patents

Abstract

(57) [Summary] (With correction) [Problem] To make a supplementary handle easily swingable with respect to an axis of an adapter. A packing ring (10) engageable with each end of a handlebar, an adapter (14), first and second intermediate couplers (20) fixed by a fastening member (50), a supplementary handle (40), and an extension device. A substantially vertical extension mountable to a straight lateral handlebar of a bicycle having a helical spring 60 for imparting flexibility. This disclosure discloses that the first and second intermediate couplers both Corresponding end slopes 23, 3 which overlap with and interlock with each other to hold the supplementary handle so as not to separate from each other.
1 to facilitate the pivoting of the handle to any desired angle and to protect it from instability, the engraved substantially hemispherical projection 15 of the adapter is provided with the engraved It is formed so as to face the substantially hemispherical concave portion 24.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a bicycle, and more particularly to a substantially vertical extension device having an improved structure which can be attached to a lateral handlebar of the bicycle, so that a predetermined angle with respect to the axis of the handlebar can be changed. About what you did.

[0002]

[Prior art]

 A substantially vertical extension device for a transverse handlebar of a typical bicycle includes a packing ring 1 and an appropriate part of the packing ring 1 so as to be substantially perpendicular to the packing ring 1 as shown in FIG. And an adapter 2 formed integrally with the adapter. The adapter 2 includes a pair of protrusions 3 formed in the axial direction so as to face the upper edge so as to engage with a pair of notches 5 formed opposite the lower edge of the first intermediate coupler 4. The first intermediate coupler 4 has an inclined upper edge 8 formed in line with the inclined lower edge 10 of the second intermediate coupler 9. The adapter 2 and the first and second intermediate couplers 4 and 9 both have a central bore 7 which is coaxial. Here, the central bore 7 for the second intermediate coupler 9 has a small-diameter screw portion that can be screwed to the screw shaft of the screw member 6, and the screw member 6 is connected to the adapter 2 and the first and second screws. The intermediate couplers 4 and 9 are inserted through the adapter 2 and the central bore of the couplers 4 and 9 so that they are coaxially fastened together with the packing ring 1 fixed to one end of the lateral handlebar of the bicycle. And screwed into the small diameter screw portion. Then, the supplementary handle 11 is fitted on the adapter 2. When the screw member 6 is rotated again, the second intermediate coupler 9 tries to rotate simultaneously with the screw member 6, and the opposite inclined lower edge 10 overlaps and interlocks with the inclined upper edge 8 of the first intermediate coupler 4. Thus, the supplementary handle 11 is firmly fixed.

[0003]

[Problems to be solved by the invention]

 However, in the prior art described above, while the supplementary handle 11 may be radially adjustable on the adapter 2 while being fixed as described above, any desired angle and angle with respect to the axis of the adapter 2 may be provided. There was a problem that it could not be adjusted in the horizontal direction so that If so, a large number of molds matching adapters with different angles must be prepared at the time of manufacture. This will significantly increase manufacturing costs.

The present invention has been made to address and / or eliminate the above-mentioned drawbacks, and has provided a novel structure which will not be described before.

An object of the present invention is to provide an adapter in which, in addition to an inverted tapered hole formed in a substantially hemispherical convex portion in an axial direction, an adapter at an upper end thereof coincides with a substantially hemispherical concave portion at a lower end of the first intermediate coupler. By having a substantially hemispherical convex portion, the bicycle can easily swing so that the supplementary handle changes to an arbitrary lateral angle with respect to the adapter axis. It is an object of the present invention to provide an extension device which can be attached to a lateral handlebar substantially vertically.

[0006] Another object of the present invention is to ensure that both the substantially hemispherical projections and recesses have mutually facing surfaces with correspondingly formed transverse grooves, thereby providing stability between the two. It is an object of the present invention to provide an extension device which can be attached substantially vertically to a lateral handlebar of a bicycle, which can increase the power.

It is yet another object of the present invention to dispose the spring means in the central bores of the first and second intermediate couplers such that the spring means can be engaged with a bolt covered by the sleeve member. It is an object of the present invention to provide an extension device which can be attached to a bicycle handlebar in a substantially vertical direction, which can more flexibly adjust a lateral angle of a supplementary handle to the bicycle.

The present invention will become more fully understood by reference to the following detailed description of the invention when taken in conjunction with the accompanying drawings.

[0009]

[Means for Solving the Problems]

 According to a first aspect of the present invention, there is provided a packing ring which can be attached to each end of a lateral handlebar of a bicycle, wherein the packing ring is provided with a slit in a thick portion to fix the packing ring. Screw hole is formed in the shaft center bore formed substantially perpendicularly to the handlebar, a substantially hemispherical projection formed with a notched surface extending parallel to the tip, and a first central bore inserted through the inside. A packing ring having an inverted tapered hole formed in the center of the convex portion, and an adapter integrally formed on one end of the slit in a direction substantially perpendicular to the handlebar; A hollow cylinder body having a large-diameter flange at the rear end having a substantially hemispherical concave portion formed with a notch extending parallel to the hemispherical convex portion, and formed on the opposite side to the flange. A second central bore having a large diameter, an opening formed at the center of the concave portion communicating with the second central bore having a large diameter so as to define a first shoulder therebetween, and a tip formed at a tip end. A first intermediate coupler having a first inclined surface and an outer peripheral wall having a groove formed therein, a hollow cylinder body having an outer diameter that is the same as that of the first intermediate coupler, and adapted to the first inclined surface. A second slope formed at one end and a third slope formed at the second slope side having the same diameter as the second central bore for forming a space to be accommodated at the time of coupling for internally distorting the spring means. A center bore, a small-diameter screw recess formed at the center of the bottom of the third center bore, a second shoulder defined between the third center bore and the screw recess, and a groove of the first intermediate coupler. An outer peripheral wall having a groove formed in conformity with the formed corresponding outer peripheral wall. A circular head with a recess and a screw shaft, the circular head is covered with a sleeve member, and the screw shaft is sequentially formed with a first central bore and a reverse tapered hole of the adapter, and a second shaft of the first intermediate coupler. (2) a fastening member which is inserted through the center bore and the third center bore of the second intermediate coupler and is screwed into the threaded recess of the second intermediate coupler; A substantially L-shaped axial direction having an inner diameter substantially matching the outer diameter of the first and second intermediate couplers so as to cover the first and second intermediate couplers by friction in a state where the first and second intermediate couplers are in contact with and stopped. And a supplementary handle provided with a hollow cylinder body having a cross section along the length of the bicycle, and an extension device attachable in a substantially vertical direction to a lateral handlebar of the bicycle.

According to a second aspect of the present invention, in the extension device according to the first aspect, the screw member is provided between the first and second shoulders of the first and second intermediate couplers. It is characterized by being distorted.

According to a third aspect of the present invention, in the extension device according to the first aspect, the first and second slopes of the first and second intermediate couplers are adapted to rotate the fastening member. It is characterized by overlapping and interlocking.

According to a fourth aspect of the present invention, there is provided the extension device according to the first aspect, wherein the substantially hemispherical recess is provided so that the supplementary handle is oriented in a desired lateral direction with respect to the axis of the adapter. In order to change the angle to the above-mentioned angle, it can swing on the substantially hemispherical convex portion.

According to a fifth aspect of the present invention, in the extension device according to the first aspect, the notched surface is such that the substantially hemispherical concave portion swings on the substantially hemispherical convex portion. It is characterized in that it can be suppressed.

[0014]

[Embodiment of the invention]

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is an exploded perspective view showing a preferred embodiment of a substantially vertical extension device attachable to a lateral handlebar of a bicycle according to the present invention, and FIG. 3 is an elevation view showing a packing ring of the present invention. FIG. 4 is an elevational view of FIG. 3 as viewed from the right, FIG. 5 is an elevational view showing the relationship between the first and second intermediate couplers, and FIG. 6 is a preferred embodiment of the present invention. FIG. 7 is a cross-sectional view showing an assembling state, and FIG. 7 is a cross-sectional view for explaining the operation of adjusting the lateral angle of the supplementary handle.

Compared to the drawing of FIG. 1 and what is to be taught, as shown in FIG. 2, the substantially vertical extension device attachable to the lateral handlebar of the bicycle of the present embodiment is generally , A packing ring 10, a first intermediate coupler 20, a second intermediate coupler 30, a supplementary handle 40, a fastening member 50, and a coil spring 60.

The packing ring 10 has a central shaft bore 12 provided with a slit 13 in a thick portion, and the screw hole 11 is fixed to one end of the handlebar in the lateral direction by a fastening member that fits the packing ring 10. For this purpose, it is formed in the axial direction through which the central bore 12 is inserted (see FIGS. 2 and 4). At the other end of the lateral handlebar, another extension device of a corresponding structure, which need not be explained, is fixed. The adapter 14 is integrally formed in a substantially vertical direction on an upper end side located above the slit 13. The adapter 14 is located at an upper end where a notched surface 18 having a sawtooth cross section is formed. It has a substantially hemispherical convex portion 15 and an inverted tapered hole 16 formed in the center of the convex portion 15 and communicating with a first central bore 17 in the axial direction of the adapter 14. Here, the inverted tapered hole refers to a tapered hole formed such that the opening diameter on the convex portion 15 side is larger than the opening diameter on the first central bore 17 side (see FIGS. 2, 3, and 6).

The first intermediate coupler 20 has a hollow cylinder body having a large-diameter flange 22 at a lower end, and a substantially hemispherical concave portion 24 on a lower surface of the flange 22. A notched surface 25 having a saw-toothed cross section that can be engaged with the blade is formed. Further, the first intermediate coupler 20 has a small-diameter central bore 21 (see FIG. 5) formed in the concave portion 24 so as to be able to communicate with the reverse tapered hole 16 and the second central bore 27 of the adapter 14, and It has one slope 23 and an outer peripheral wall 26 in which a groove is formed. Since the diameter of the second central bore 27 is greater than that of the central bore 21, a first shoulder 28 is defined therebetween.

The second intermediate coupler 30 also has a hollow cylinder body having the same outer diameter as that of the first intermediate coupler 20, a second slope 31 at a lower end adapted to the first slope 23, and a coil spring inside. A third central bore 32 having the same diameter as the second central bore 27 for forming a cylindrical receiving space for baiasing the 60, and a third central bore 32 for fixing the screw shaft of the fastening member 50 therein. It has a small diameter screw recess 33 formed at the bottom center of the center bore 32 and a second shoulder 34 defined between the third center bore 32 and the screw recess 33. The second intermediate coupler 30 further has a grooved outer peripheral wall 35 that matches the grooved outer peripheral wall 26 of the first intermediate coupler 20.

The supplemental handle 40 may be a hollow cylinder body having an L-shaped axial cross section (see FIG. 6) or may have virtually any suitable shape. The supplementary handle 40 has an inner diameter substantially matching the outer diameter of the first and second intermediate couplers 20 and 30, and these can be engaged.

Referring to FIG. 6, it is assumed that the packing ring 10 is already fixed to one end of the lateral handlebar of the bicycle at the time of assembly, and the sleeve member 51 is first placed on the circular head of the fastening member 50. Cover. The fastening member 50 generally has a screw head inserted through a recessed circular head, an inverted tapered hole 16 in which the first central bore 17 and the upper surface of the sleeve member 51 abut against the lower end 19 and are stopped. It is a bolt with. Then, the first intermediate coupler 20 is put on the screw shaft of the fastening member 50 so that the substantially hemispherical concave portion 24 is tightly engaged with the substantially hemispherical convex portion 15. Then, the coil spring 60 is put on the screw shaft of the fastening member 50 so that the lower end of the coil spring 60 comes into contact with the first shoulder 28 of the first intermediate coupler 20 and stops. Then, turning the circular head of the fastening member 50 with an Allen wrench or any suitable one, the first ramp 23 is fully secured to the second ramp 31 until the first ramp 23 is fully secured to the second ramp 31. The thread is screwed into the threaded recess 33 of the second intermediate coupler 30. Finally, with the distal end of the stilt handle 40 resting against the upper surface of the flange 22 so that the on-axis coil spring 60 is properly distorted between the first and second shoulders 28 and 34. The supplementary handle 40 is put on the intermediate couplers 20 and 30, and the outer peripheral wall of the intermediate coupler is pressed against the inner surface of the supplementary handle 40 and fixed by friction.

Referring to FIG. 7, if the user wishes to move the supplemental handle 40 to a desired angle with respect to the axis of the adapter 14, the substantially hemispherical recess 24 also has the shape of the substantially hemispherical protrusion 15. And the supplementary handle 40 is loosened slightly so that the engagement between the second inclined surface 31 and the first inclined surface 23 is slightly released by the elastic force of the coil spring 60. When swung, the screw axis of the fastening member 50 therefore moves with the intermediate couplers 20 and 30 and tilts inside the reverse tapered bore 16. When the desired lateral angle for the handle is obtained, the fastening member 50 is tightened again clockwise until the inclined surfaces 23 and 31 are closed, and the substantially hemispherical convex portions 15 are formed by the notched surfaces 18 and 25. Are stably engaged with the substantially hemispherical concave portion 24. If the fastening member 50 is further tightened clockwise, the second intermediate coupler 30 will move so that the ramps 23 and 31 overlap and engage to more stably engage the supplemental handle 40 with the intermediate couplers 20 and 30. Will be actuated by the screw shaft. Further, the outer peripheral walls 26 and 35 in which the grooves of the first and second intermediate couplers 20 and 30 are formed also apply a predetermined frictional force for locking the inner surface of the supplementary handle 40, and the supplementary handle 40 Prevents rotation around the axis.

It should be noted that the description in the present specification relating to the above-described embodiment should be interpreted as a representative rather than a limitation of the present invention, and the present invention is not attached to the present invention. It includes many modifications and improvements which can be easily achieved by those skilled in the art without departing from the technical idea or purpose of the present invention defined by the appended claims and the legal equivalents.

[0023]

[Effect of the invention]

 As described above, according to the present invention, the adapter coincides with the substantially hemispherical recess at the lower end of the first intermediate coupler, in addition to the inverted tapered hole formed in the substantially hemispherical protrusion in the axial direction. With a substantially hemispherical convex portion at the upper end as described above, it is easy to swing the turn so that the supplementary handle changes to an arbitrary lateral angle with respect to the axis of the adapter. It has become possible to provide an extension device that can be attached in a substantially vertical direction to a lateral handlebar of a bicycle that can be operated.

[0024] Furthermore, both the substantially hemispherical projections and recesses have mutually opposing surfaces in which the transverse grooves are formed correspondingly, thereby increasing the stability between the two. It has become possible to provide an extension device that can be attached substantially vertically to a handlebar in the lateral direction of a bicycle that can be operated.

Furthermore, the spring means is arranged in the central bores of the first and second intermediate couplers so as to be able to engage with the bolts over which the sleeve member is mounted, so that the supplementary handle with respect to the shaft of the adapter is provided. It has become possible to provide an extension device that can be attached substantially vertically to a lateral handlebar of a bicycle that can adjust the lateral angle more flexibly.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a substantially vertical extension device that can be attached to a conventional bicycle handlebar.

FIG. 2 is an exploded perspective view showing a preferred embodiment of a substantially vertical extension device attachable to a lateral handlebar of a bicycle according to the present invention;

FIG. 3 is an elevation view showing the packing ring of the present invention.

FIG. 4 is an elevation view as viewed from the right in FIG. 3;

FIG. 5 is an elevation view showing a mutual relationship between first and second intermediate couplers.

FIG. 6 is a sectional view showing an assembled state of the preferred embodiment of the present invention.

FIG. 7 is a cross-sectional view for explaining an operation of adjusting a lateral angle of the supplementary handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Packing ring, 14 ... Adapter, 15 ... Substantially hemispheric convex part, 20 ... 1st intermediate coupler, 23 ... 1st slope, 24 ... Substantially semispherical concave part, 30 ... 2nd intermediate coupler, 31 ... 2nd Slope, 40: Supplementary handle, 50: Fastening member, 60: Coil spring (spring means)

Claims (5)

[Utility model registration claims] 1. A packing ring attachable to each end of a lateral handlebar of a bicycle, wherein a thick hole is provided with a slit and a screw hole for fixing the packing ring is substantially perpendicular to the handlebar. And a substantially hemispherical convex portion formed with a notched surface extending parallel to the tip and an inverted taper formed at the center of the convex portion communicating with the first central bore penetrating the inside. A packing ring having a hole and having an adapter formed at one end of the slit in a direction substantially perpendicular to the handlebar; and a notch extending parallel to the bottom so as to match the substantially hemispherical convex portion of the adapter. A hollow cylinder body having a large diameter flange at the rear end having a substantially hemispherical concave portion having a surface formed thereon, a large diameter second central bore formed on the opposite side to the flange, and a first shoulder between the hollow cylinder body and the first shoulder; Department An opening formed at the center of the recess communicating with the second central bore having a large diameter, a first slope formed at the tip, and an outer peripheral wall having a groove formed therein. (1) an intermediate coupler, a hollow cylinder body having the same outer diameter as that of the first intermediate coupler, a second slope formed at one end in conformity with the first slope, and a spring means for internally distorting the spring means. A third central bore formed on the side of the second slope having the same diameter as the second central bore for forming a space to be accommodated during coupling;
A small diameter screw recess formed at the center of the bottom of the third central bore; and a second screw recess defined between the third central bore and the screw recess.
A second intermediate coupler having a shoulder, an outer peripheral wall having a groove formed in conformity with a corresponding outer peripheral wall having a groove formed in the first intermediate coupler, and a concave circular head and a screw shaft. The circular head is covered with a sleeve member, and the screw shaft is sequentially connected to a first central bore and a reverse tapered hole of the adapter, a second central bore of the first intermediate coupler, and a second central bore of the second intermediate coupler. (3) a fastening member inserted through the central bore and screwed into the screw recess of the second intermediate coupler; and Supplementary handle with a substantially L-shaped hollow cylinder body along the axial direction having an inner diameter substantially matching the outer diameter of the first and second intermediate couplers for overlaying the first and second intermediate couplers And having Extender attachable to a direction substantially perpendicular to the transverse direction of the handlebar of the bicycle to be. 2. The extension device according to claim 1, wherein the screw member is distorted between the first and second shoulders of the first and second intermediate couplers. 3. The extension device according to claim 1, wherein the first and second slopes of the first and second intermediate couplers overlap and interlock with rotation of the fastening member. 4. The substantially hemispherical recess is pivotable on the substantially hemispherical protrusion to change the supplemental handle to a desired lateral angle with respect to the axis of the adapter. The extension device according to claim 1, wherein: 5. The extension device according to claim 1, wherein the cut surface can prevent the substantially hemispherical concave portion from swinging on the substantially hemispherical convex portion.