JPH061278A - Bicycle handle - Google Patents

Abstract

PURPOSE:To improve fixing force at the time of fixing a handle bar in the angle adjusted state in a bicycle handle, especially a handle formed in such a way that the protruding angle of a pair of handle bars protruding laterally from a handle stem can be changed so as to enable the position adjustment of a grip end. CONSTITUTION:A bicycle handle is provided with a pressure cylinder 2 rotatably mounted into a holding cylinder 10 for holding a handle bar 1 equipped at a handle stem so as to insert the handle bar 1 through in the inclined state, and a slit 21 formed at the handle bar through part in the pressure cylinder 2; and the handle bar through part and the holding cylinder 10 are clamped to fix the handle bar 1. In such a bicycle handle, the end part of the pressure cylinder 2 is protruded from the holding cylinder 10. A partially opened clamping ring 4 is fitted closely to the outer periphery of both protruding part and the end part of the holding cylinder 10, and the opened part 43 of the clamping ring 4 is clamped by clamping bolts 45.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle handle, and more particularly to a handle in which a grip end position can be adjusted by changing a projecting angle of a pair of handle bars projecting left and right from a handle stem. Thus, the fixing force for fixing the handlebar in the angle-adjusted state is improved.

[0002]

2. Description of the Related Art A bicycle handlebar, such as that shown in FIG. 6, is provided as a bicycle handlebar in which the position of a grip end located at an end portion of a handlebar can be changed to ensure an optimum driving posture of a driver. is there. A cylindrical holding cylinder (10) is horizontally arranged at the tip of the handle stem (13), and slits (15) and (15) are cut and cut in the side walls of both ends of the holding cylinder (10). In addition, each slit
Tightening flanges (19) and (19) on the opposite parts with (15) in between.
Is provided.

A cylindrical pressure cylinder (2) is rotatably inserted into the holding cylinder (10) and is axially pierced in the pressure cylinder (2). The cylindrical hole (20) is formed in a substantially V-shape that is symmetrical in the left and right direction and is bent at the center of the pressure cylinder (2). Also, the cylindrical hole (2
The base end of the handlebar (1) is inserted into 0).

Next, the work of fixing the handlebars (1) (1) to the handle stem (13) will be described. The pressure cylinder (2) is inserted into the holding cylinder (10), and the base ends of the handlebars (1) and (1) are further inserted into both ends of the pressure cylinder (2). The base ends of the handlebars (1) and (1) are inserted into both ends of the holding cylinder (10) via the pressure cylinder (2).

Next, the tightening flanges (19) (19) facing each other with the slits (15) (15) formed at both ends of the holding cylinder (10) interposed therebetween.
The bolts and nuts (17a) (17b),
(0) contracts in diameter and presses the outer circumference of the pressure cylinder (2),
Further, the pressurizing cylinder (2), which contracts in diameter by the compressive force, presses the outer periphery of the handlebar (1) inserted therein, and the handlebar (1) is stabilized.

In this structure, the cylinder hole (20) of the pressurizing cylinder (2) formed for holding the handlebar (1) inside is formed in a substantially V shape inside the pressurizing cylinder (2). Since it is pierced, it is a pressure cylinder (2)
The bolts and nuts (17a) (17
By re-tightening b), the protrusion angle of the handlebars (1) (1) protruding from the holding tube (10) of the handle stem (13) can be adjusted, and the position of the grip end (18) can be adjusted to the desired position. . That is, as shown in (a) of FIG.
Set (2) so that its cylindrical hole (20) has a V shape that widens toward the rear of the bicycle, and set the grip end (18) at the end of the handlebar (1) to a position close to the driver. On the contrary, if the cylindrical hole (20) has a V-shape that widens toward the front, the position of the grip end (18) can be changed by the driver as shown in FIG. It can be set at a distant position.

However, the above-mentioned conventional device has a problem that the handlebar (1) may not be sufficiently fixed depending on the adjustment angle of the handlebar. The above problems will be described in more detail. As shown in (a) of FIG. 7, when the grip end (18) is positioned close to the driver, the slits (15) (21) of the holding cylinder (10) and the pressure cylinder (2) are placed.
Are in agreement with each other.

Therefore, when the bolts / nuts (17a) (17b) are tightened, the slits of the holding cylinder (10) that maximize the amount of deformation
Due to the contraction of the (15) part, the slit (21) part of the pressure cylinder (2) is tightened, whereby the pressure cylinder (2)
Is surely contracted in diameter. However, as shown in Figure (b), the slits (15) (2) of the holding cylinder (10) and the pressure cylinder (2)
If the 1) do not match each other, the slit (1
The tightening force of the bolt (17a) acts exclusively on the constituent wall of the pressurizing cylinder (2) located at the portion corresponding to (5), that is, the non-formation portion of the slit (21). Therefore, in such a case, when the bolt (17a) is tightened, the slit (21) of the pressure tube (2) is less likely to contract, which causes the pressure tube (2) to have the handlebar ( 1) can not be compressed sufficiently. From this, there are cases where the handlebar (1) cannot be fixed sufficiently.

The present invention has been made in view of the above-mentioned points. "A holding barrel (10) for holding a handlebar mounted on a handle stem (13) and a rotatable barrel in the holding barrel (10)" The pressurizing cylinder (2) which is installed inside the pressurizing cylinder (2) for inserting the handlebar (1) in an inclined state and the slit (21) formed in the handlebar inserting portion of the pressurizing cylinder (2) are provided. Section for fixing the handlebar (1) to the handlebar stem (13) by tightening the part and the holding tube (10) '', regardless of the adjustment angle of the handlebar (1), the strength of the handlebar (1) The task is to ensure proper fixation.

[0010]

[Technical Means] A technical means of the present invention for solving the above-mentioned problem is to "protrude the end of the pressurizing cylinder (2) from a holding cylinder (10), and to project the protruding portion and the holding cylinder (10). Partially open the tightening rings (4) on both ends of the
The open portion (43) of (4) is tightened with the tightening bolts (45). "

[0011]

The above technical means operates as follows. Holding tube
The pressure cylinder (2) is inserted into (10) and the latter end is projected from the former end. Next, in the above state, the tightening ring (4) is fitted on both the end of the holding cylinder (10) and the protruding part of the pressurizing cylinder (2), and the open part of the tightening ring (4) is attached.
(43) and the slit (21) of the pressure cylinder (2) are aligned with each other. Also, when rotating the pressurizing cylinder (2) (when adjusting the angle of the handlebar (1)), these tightening rings should be fitted with the slit (21) and the opening (43) aligned with each other.
(4) Rotate the pressure cylinder (2) integrally with the holding cylinder (10). As a result, even if the pressurizing cylinder (2) is rotated to adjust the angle of the handlebar (1), the pressurizing cylinder (2) and the slit (21) of the tightening ring (4) and the open part (43) can always be matched.

Then, when the opening portion (43) of the tightening ring (4) is tightened with the tightening bolt (45), the opening portion (43) and the pressure cylinder (2) are tightened.
Since the slits are aligned with each other, the pressure cylinder (2) can be reliably contracted in diameter. Therefore, the pressing force of the handle bar (1) inserted in the pressurizing cylinder (2) can be sufficiently secured. Further, the inner peripheral wall of the tightening ring (4) on the holding cylinder (10) side presses the outer circumference of the end of the holding cylinder (10), and the above-mentioned tightening for pressing and holding the pressure cylinder (2). ring
(4) is also fixed to the holding cylinder (10).

As a result, the holding cylinder for the handle stem (13)
The handlebar (1) can be fixed to (10).

[0014]

[Effect] The present invention has the following unique effects. Even if the pressure cylinder (2) is rotated to adjust the angle of the handlebar (1), the slit (21) of the pressure cylinder (2) and the opening of the tightening ring (4)
(43) can always be aligned, so when the tightening ring (4) is tightened at its open part (43), the slit (21) part on the pressurizing cylinder (2) side that matches this Is surely contracted, and the handlebar (1) can be securely fixed regardless of the adjustment angle of the handlebar (1).

[0015]

Embodiments of the present invention described above will now be described in detail with reference to the drawings. FIG. 1 is a plan view of the handle portion as seen from above, in which both ends of a cylindrical holding cylinder (10) are independent pressure cylinders.
(2) (2) is interpolated separately. The holding cylinder (10) of the handle stem (13) and the handlebars (1) (1) are connected via the pressure cylinders (2) (2), and The 10) and handlebar (1) inserts are secured by tightening rings (4) (4).

Next, the handle bar (1) and the holding cylinder (10)
The structure of the connecting portion will be described in more detail. As shown in FIG. 2, a slit (15) is cut in the outer wall of the end of the cylindrical holding tube (10) as in the conventional case. As shown in FIG. 4, the pressurizing cylinder (2) is composed of a first cylinder (23) and a second cylinder (24) integrally formed with the first cylinder (23). The axes of 24) are eccentric to each other. Further, the pressurizing cylinder (2) is provided with a cylindrical hole (20) which is bored non-parallel to the axis thereof, and the outer wall of the pressurizing cylinder (2) is axially cut and cut. A slit (21) is formed.

Next, as shown in FIGS. 2 and 5, the tightening ring
The (4) is formed in a substantially cylindrical shape as a whole, and the outer wall of the tightening ring (4) is formed with an open portion (43) which is opened and cut over the entire axial direction thereof. Also, tightening ring
(4) Inside is the first hole that is fitted onto the outer peripheral part of the end of the holding tube (10).
A second hole (42) to be fitted is formed in the second cylinder (24) portion of the pressure cylinder (2) and the (41). Further, the opening portion (43) of the tightening ring (4) is provided with a tightening bolt as shown in FIG.
(45) (a hexagon socket head cap screw in this embodiment).

In this case, the first cylinder (23) portion of the pressure cylinders (2) (2) is inserted into each of both ends of the holding cylinder (10) of the handle stem (13). Then, the first cylinder (23) in the pressure cylinder (2)
And the stepped portion (26) formed at the boundary between the second cylinder (24) and the second cylinder (24).
The state of being brought into contact with the end of (0) and being positioned. Next, the tightening ring (4) is fitted onto the end of the holding cylinder (10) with the pressure cylinder (2) loaded. At this time, tightening ring (4)
The first hole (41) of the tightening hole (40) in (1) is externally fitted to the holding cylinder (10), and the second hole (42) is the second cylinder (2) of the pressure cylinder (2).
4) Put it on the part. Then, since the first cylinder (23) and the second cylinder (24) of the pressurizing cylinder (2) are eccentric to each other, the second cylinder (24) and the tightening ring ( 4) second hole
(42) is in an engaged state, so that the tightening ring (4) and the pressurizing cylinder (2) have both slits (21) and open portions (4).
In the state where 3) is matched, relative rotation does not occur in the circumferential direction.

Next, as shown in FIG. 2, after inserting the base end portion of the handle bar (1) into the pressure cylinder (2), the tightening bolt (4
5) When tightening (45), tighten the holes (4) in the tightening ring (4).
The second cylinder of the pressure cylinder (2) having the second hole (42) of (0) inserted therein.
(24) is to be tightened, which causes the pressure cylinder (2) to contract in diameter. As a result, the handlebar (1) inserted in the pressurizing cylinder (2) is pressed by the inner peripheral wall of the pressurizing cylinder (2) so that they are connected. Also, tightening ring (4)
The first hole (41) of the tightening hole (40) in this case presses against the end of the retaining tube (10) inserted thereinto, so that the tightening ring (4) and The holding cylinder (10) is also in a coupled state. Therefore, the holding cylinder (10) and the handlebar (1) are connected to each other via the pressure cylinder (2) interposed between them and the tightening ring (4) for tightening them.

In the above state, the handlebar
(1) is a cylinder hole (20) penetrating non-parallel to the axis of the pressure cylinder (2)
Since the pressure cylinder (2) is rotated with respect to the holding cylinder (10) and the tightening bolt (45) is retightened, the handlebar ( The inclination angle of 1) can be changed. Also, the pressure cylinder (2) and the tightening ring (4) are
Since the 4) and the second hole (42) are engaged with each other to prevent relative rotation in the circumferential direction, the tightening ring (4) is irrespective of the adjustment angle of the pressure cylinder (2). The open part (43) of the device and the slit (21) of the pressurizing cylinder (2) are always aligned with each other.
That is, regardless of the adjustment angle of the handlebar (1), the slit (21) of the pressurizing cylinder (2) can be tightened by the opening (43) of the tightening ring (4).

[Brief description of drawings]

FIG. 1 is a plan view of a handle according to an embodiment of the present invention.

FIG. 2 is an explanatory view of a state where the handlebar (1) is fixed.

FIG. 3 is an explanatory view of a state where the angle of the handlebar (1) is changed.

FIG. 4 is a perspective view of the pressure cylinder (2).

FIG. 5 is a cross-sectional view of the loading portion of the tightening bolt (45).

FIG. 6 is an explanatory diagram of a conventional example.

FIG. 7 is a sectional view of a main part of a conventional example.

[Explanation of symbols]

 (1) ・ ・ ・ Handlebar (2) ・ ・ ・ Pressurizing tube (4) ・ ・ ・ Tightening ring (10) ・ ・ ・ Holding tube (13) ・ ・ ・ Handle stem (20) ・ ・ ・ Tube hole (21) ・ ・ ・ Slit (40) ・ ・ ・ Tightening hole (43) ・ ・ ・ Tightening slit (45) ・ ・ ・ Tightening bolt

Claims (2)

[Claims] 1. A holding cylinder (10) for holding a handlebar mounted on a handle stem (13), and rotatably mounted in the holding cylinder (10) and inserting the handlebar (1) in an inclined state. The pressurizing cylinder (2) and the slit (21) formed in the handlebar insertion part of the pressurizing cylinder (2) are provided, and the handlebar inserting part and the holding cylinder (10) are tightened to handlebar.
In the bicycle handlebar in which (1) is fixed to the handle stem (13), the end of the pressurizing cylinder (2) is projected from the holding cylinder (10), and the protruding portion and the end of the holding cylinder (10) are Insert a partially open tightening ring (4) tightly on both sides, and tighten this tightening ring.
A bicycle handlebar in which the opening (43) of (4) is tightened with a tightening bolt (45). 2. The opening (43) of the tightening ring (4) and the pressure tube.
The bicycle handle according to claim 1, wherein the slits (21) of (2) are aligned with each other and are occluded.