JP2016055774A - Back mirror device for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a back mirror device for a bicycle which may be installed at a portion of a bicycle excluding a handle and flexibly applied to various types of bicycles.SOLUTION: A back mirror device 10 for a bicycle includes: a back mirror 14; a body rod part 16 supporting the back mirror 14; a frame fixing member 20 which fixes a part of the body rod part 16 to a frame 18 of a bicycle 12; and a steering shaft fixing member 24 which fixes another part of the body rod part 16 to a steering shaft 22 of the bicycle 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bicycle rearview mirror device, and more particularly to a rearview mirror device capable of confirming the rear side stably without being affected by the steering wheel operation of the bicycle.

  When a rearview mirror is attached to the handle of a bicycle or the like, the rearview mirror swings from side to side in response to the steering wheel operation, and it has been pointed out that the rear side cannot be confirmed stably. For this reason, while the need for rearward confirmation by the rearview mirror is fully recognized, the rearview mirror for bicycles is not widely used.

On the other hand, in Patent Document 1, the lower part of the arm of the rearview mirror is fixed to an annular clamp provided inside the front part of the frame, and the bicycle back having a structure in which the space between the head tube and the arm is reinforced by a supporting arm. A mirror device is disclosed.
In Patent Document 2, a lower end of a mirror mounting rod is fixedly attached to a frame on which a handle is mounted, and a mirror for a motorcycle is pivotally attached to a bundle shaft that is a rotation center of the handle. A mounting apparatus is disclosed.
Shokai Sho 22-22293 4-31093

  All of these devices attach a rearview mirror to a portion (frame or the like) other than the handle of the bicycle, and are certainly not adversely affected by the operation of the handle.

However, in the case of the structure in which the supporting arm is attached to the head tube of the bicycle as in the cited document 1, the structure cannot be applied to the bicycle having a design in which the size of the head tube cannot be sufficiently secured.
Moreover, in order to pivotally attach the mirror mounting rod to the tip of the bicycle handle shaft as in the cited document 2, a large number of U-shaped mounting brackets, mounting brackets, pivot shafts, handle receiving bolts, etc. This member is required, and it takes a lot of time and effort to install it. In the first place, most types of bicycles did not have a “handle mounting bolt”, and there was a problem with their versatility.

  Furthermore, as a result of the distance between the rearview mirror and the mounting location (frame, etc.) becoming longer, the length of the arm and the mounting rod that connect the two is inevitably longer, and the thickness of the arm etc. is not enough for that, There was also a problem that the rearview mirror constantly shakes in response to vibrations transmitted from the ground.

The present invention has been devised to solve such problems of the prior art, and can be installed in places other than the handle of the bicycle and can be flexibly applied to many bicycles. The first object is to provide a rearview mirror device.
It is a second object of the present invention to provide a bicycle rearview mirror device that can reduce the vibration of the rearview mirror while traveling due to vibration from the ground.

  In order to achieve the above object, a bicycle rearview mirror device according to claim 1 includes a rearview mirror, a main body bar portion that supports the rearview mirror, and a frame that fixes a part of the main body bar portion to the frame of the bicycle. A fixing means and a handle shaft fixing means for fixing the other part of the main body bar portion to the handle shaft of the bicycle are provided.

  The bicycle rearview mirror apparatus according to claim 2 is the apparatus according to claim 1, wherein the frame fixing member is arranged and fixed at an arbitrary position on the main body bar portion. And a second engagement means for disposing and fixing the handle shaft fixing means at an arbitrary position on the main body bar portion.

  A bicycle rearview mirror device according to a third aspect is the device according to the second aspect, wherein the frame fixing means and the first engaging means are coupled so that the angle between them can be adjusted. The handle shaft fixing means and the second engaging means are connected so that the distance and angle between them can be adjusted.

  A bicycle rearview mirror device according to a fourth aspect is the device according to any one of the first to third aspects, wherein the main body bar portion is constituted by a hollow pipe made of a metal material.

  A bicycle rearview mirror device according to a fifth aspect is the device according to the fourth aspect, wherein the hollow pipe constituting the main body bar portion has dimensions of at least 1 mm in thickness and 2 cm in diameter. It is characterized by that.

  A bicycle rearview mirror device according to a sixth aspect is the device according to the first to fifth aspects, wherein the handle shaft fixing means includes a sliding bearing arranged around the handle shaft. It is said.

  A bicycle rearview mirror device according to a seventh aspect is the device according to the first to sixth aspects, wherein the main body bar portion includes an extending portion that extends forward beyond a handle of the bicycle. The mirror is engaged with the extending portion.

  A bicycle rearview mirror device according to an eighth aspect is the device according to the first to seventh aspects, wherein the rearview mirror is connected to a main body bar through an arm, and the arm and the rearview mirror rotate. In addition to being freely engaged, the arm and the main body bar are also rotatably engaged.

In the bicycle rearview mirror device according to the present invention, the main body rod part for supporting the rearview mirror is mounted on the bicycle via the frame fixing means and the handle shaft fixing means, and most bicycles have a frame and a handle. Since the shaft is provided, the rearview mirror can be easily attached to many existing bicycles by retrofitting.
As a result, it is possible to easily check the rear side while riding a bicycle, and it can be expected that a contact accident with the automobile is effectively avoided.

  Also, by configuring the main body bar part with a metal hollow pipe, it is possible to increase the overall rigidity while reducing the weight, and to suppress the mirror from shaking due to vibration from the road surface while traveling Can do.

FIG. 1 is a perspective view showing a state in which a bicycle rearview mirror device 10 according to the present invention is mounted on a bicycle 12.
The bicycle rearview mirror device 10 includes a main body rod portion 16 for attaching the rearview mirror 14, a frame fixing member 20 for fixing the main body rod portion 16 to the frame 18 of the bicycle 12, and the main body rod portion 16 for the bicycle. A handle shaft fixing member 24 for fixing to the 12 handle shafts 22 is provided.

As shown in FIG. 2, the main body bar 16 is connected to a relatively long vertical portion 16a, a horizontal portion 16b connected to the upper end of the vertical portion 16a at a right angle, and a right angle to the tip of the horizontal portion 16b. It has a right side portion 16c. The horizontal portion 16b and the right side portion 16c correspond to “extension portions”.
An attachment member 26 of the rearview mirror 14 is fitted to the right side portion 16c, and the attachment member 26 and the rearview mirror 14 are connected via an arm 28.

The main body bar portion 16 is made of a hollow pipe having the same material (for example, stainless steel) and the same dimensions (for example, a diameter of 2 cm or more and a wall thickness of 1 mm or more) as the handle 29 of the bicycle 12, and is as strong as the handle. have.
Moreover, since the inside is a cavity, the weight is kept low despite having high rigidity. However, the present invention is not limited to such a configuration, and the main body bar portion 16 may be formed of a solid bar-like body having no cavity inside.

  As shown in FIG. 3, the frame fixing member 20 is connected to a movable tube 30 as a first engaging means slidably inserted into the vertical portion 16 a of the main body bar portion 16 via an engaging shaft 49. ing.

  The movable tube 30 can move up and down along the vertical portion 16a by loosening the two screws 34, and is fixed to the vertical portion 16a by tightening the screws 34 at an arbitrary position.

  The frame fixing member 20 includes a first bending member 36 having a semicircular cross section, a second bending member 38 having a semicircular cross section, and a hinge 40 that connects the two bending members in an openable and closable manner. I have.

Through-holes 36b and 38b are formed at positions corresponding to the protruding portion 36a of the first bending member 36 and the protruding portion 38a of the second bending member 38, respectively.
Then, the frame 18 of the bicycle 12 is sandwiched between the first bending member 36 and the second bending member 38, the screws 46 are inserted into the through holes 36b and 38b, and the nuts 48 are screwed into the first ends. The bending member 36 and the second bending member 38 are closed, and the gripping member 32 is fixed to the frame 18.

As shown in FIG. 4, the movable tube 30 and the frame fixing member 20 are turnable left and right around the engagement shaft 49.
However, since a plurality of friction plates (not shown) are inserted and connected to the end of the engagement shaft 49 and the friction plates are in close contact with each other, the frame fixing member 20 is compared when a torque exceeding a certain level is applied. It will rotate slowly and not easily.

  Instead of using the movable tube 30 as the first engaging means, a member having the same configuration as that of the frame fixing member 20 can be used.

  As shown in FIGS. 5 and 6, the handle shaft fixing member 24 is provided with a clamping member 50 as a second engaging means attached to the vertical portion 16 a of the main body bar portion 16, a bolt 74 and a nut 76. It is connected.

  As shown in FIG. 6, the clamping member 50 includes a first bending member 54 having a semicircular cross section, a second bending member 56 having a semicircular cross section, and the two bending members 54, 56. And a hinge 58 for connecting the two in an openable and closable manner.

  Circular protrusions 54b and 56b are formed at positions corresponding to the protruding piece 54a of the first bending member 54 and the protruding piece 56a of the second bending member 56, respectively.

  Further, as shown in FIG. 6, the handle shaft fixing member 24 also includes a first bending member 64 having a semicircular cross section, a second bending member 66 having a semicircular cross section, and both bending members. And a hinge 68 that connects the doors in an openable and closable manner.

  Between the first bending member 64 and the second bending member 66, a slip tube 72 having an opening 70 is disposed. The sliding tube 72 is made of an alloy material having characteristics such as low friction and wear resistance, and functions as a sliding bearing for the handle shaft 22. However, the slip tube 72 may be made of a synthetic resin material having flexibility as well as low friction and wear resistance.

Oval through holes 64b and 66b are formed at positions corresponding to the protruding piece 64a of the first bending member 64 and the protruding piece 66a of the second bending member 66, respectively.
A rectangular through hole may be provided instead of the oval through holes 64b and 66b.

Here, after the handle shaft 22 is sandwiched between the first bending member 64 and the second bending member 66 of the handle shaft fixing member 24 (in the slide tube 72), the first bending member of the clamping member 50 is inserted. The vertical portion 16a of the main body rod portion 16 is sandwiched between 54 and the second bending member 56, and at the same time, the two protruding pieces 64a, 66a of the handle shaft fixing member 24 are fixed by the two protruding pieces 54a, 56a of the holding member 50. The circular through holes 54b and 56b and the oval through holes 64b and 66b are fastened with bolts 74 and nuts 76.
As a result, the engagement between the holding member 50 and the main body bar portion 16 and the connection between the holding member 50 and the handle shaft fixing member 24 are realized, and at the same time, the fixing between the handle shaft fixing member 24 and the handle shaft 22 is also realized.

Since the through hole on the handle shaft fixing member 24 side has an oval shape, the bolt 74 is inserted even if the distance between the handle shaft 22 and the vertical portion 16a of the main body rod portion 16 varies depending on the bicycle. By adjusting the position, it becomes possible to respond flexibly.
Even if the inclination angle of the handle shaft 22 varies depending on the bicycle, it can be flexibly handled by adjusting the joint angle between the holding member 50 and the handle shaft fixing member 24.
As described above, the slip tube 72 is disposed in the handle shaft fixing member 24 and surrounds the periphery of the handle shaft 22, so that there is no possibility of hindering the handle operation.

When the rearview mirror device 10 according to the present invention is mounted on the bicycle 12, as shown in FIG. 7, the rearview mirror 14 is well within the driver's field of view, and it is possible to always confirm the safety behind.
Moreover, since the main body bar portion 16 has the same high rigidity as that of the handle 29, it is possible to reduce the visibility of the rearview mirror 14 that is swayed by vibrations from the road surface.

Since the main body bar portion 16 is detachably attached to the bicycle 12 via the frame fixing member 20 and the handle shaft fixing member 24, it can be easily attached to an existing bicycle.
This is because there are various variations in bicycle designs, but most bicycles have a frame and a handle shaft.

Further, the mounting position of the frame fixing member 20 on the main body bar portion 16 can be changed by moving the movable tube 30 up and down, and the frame fixing member 20 can be rotated to correspond to various angles of the frame 18.
The change in the angle of the handle shaft 22 and the difference in the distance between the handle shaft 22 and the main body bar portion 16 can also be adjusted when the handle shaft fixing member 24 is mounted as described above.

However, the frame fixing member 20 can be fixedly connected to the movable tube 30 (non-rotatable), or the frame fixing member 20 can be directly connected to the main body bar portion 16 without the movable tube 30 being interposed. Similarly, the handle shaft fixing member 24 is fixedly connected to the clamping member 50 (the angle is not variable and the distance is not variable), or the handle shaft fixing member 24 is connected to the main body bar portion 16 without using the clamping member 50. You may connect directly to.
Of course, in these cases, the bicycle cannot be applied universally to a wide variety of designs. However, since the configuration is simplified accordingly, a plurality of bicycles with dedicated dimensions and mounting angles are provided depending on the type of bicycle. It is also relatively easy to prepare the member.

  Since the main body bar portion 16 includes a horizontal portion 16b extending from the vertical portion 16a to the front side of the bicycle, the rearview mirror can be disposed in front of the handle 29 and does not interfere with driving. In addition, it is possible to confirm the back reliably without shaking the neck greatly.

The arm 28 that supports the rearview mirror 14 is rotatably attached to the mounting member 26, and the rearview mirror 14 is also attached to the arm 28 so as to be freely rotatable. In this case, the rearview mirror 14 rotates at these points, so that it is possible to effectively absorb the impact.
Further, since the main body bar portion 16 and the handle shaft 12 are connected via the handle shaft fixing member 24, it is possible to effectively disperse the impact applied to the frame fixing member 20 at the time of falling.

  The rotating structure of the rearview mirror 14 described above is not an essential element of the present invention. For example, the main body bar portion 16 and the arm 28 of the rearview mirror 14 can be formed integrally.

It is the perspective view which observed the state which mounted | wore the bicycle with the rear-view mirror apparatus based on this invention from diagonally forward. It is a perspective view which shows a main-body stick part and a rearview mirror. It is the elements on larger scale which show a frame fixing member and a movable pipe. It is the elements on larger scale which show a frame fixing member. It is the elements on larger scale which show a handle shaft fixing member and a clamping member. It is a fragmentary sectional view showing a handle shaft fixing member and a clamping member. It is the perspective view which observed the state which equipped the bicycle with the rearview mirror device concerning this invention from back.

10 Bicycle rearview mirror device
12 bicycle
14 Rearview mirror
16 Main unit bar
16a Vertical section
16b Horizontal part
16c right side
18 frames
20 Frame fixing member
22 Handle shaft
24 Handle shaft fixing member
26 Mounting material
28 arms
29 Handle
30 Movable tube
50 Holding member
72 Sliding tube for handle shaft fixing member

Claims (8)

A rearview mirror,
A main body bar portion for supporting the rearview mirror,
Frame fixing means for fixing a part of the main body bar portion to the bicycle frame;
A bicycle rearview mirror device comprising a handle shaft fixing means for fixing the other portion of the main body rod portion to the handle shaft of the bicycle. First engaging means for arranging and fixing the frame fixing member at an arbitrary position on the main body bar portion;
A second engagement means for arranging and fixing the handle shaft fixing means at an arbitrary position on the main body bar portion;
The bicycle rearview mirror device according to claim 1, further comprising: The frame fixing means and the first engaging means are coupled so that the angle between them can be adjusted,
The bicycle rearview mirror device according to claim 2, wherein the handle shaft fixing means and the second engaging means are coupled so that the distance and angle between them can be adjusted.   The bicycle rearview mirror device according to any one of claims 1 to 3, wherein the main body bar portion is constituted by a hollow pipe made of a metal material.   5. The bicycle rearview mirror device according to claim 4, wherein the hollow pipe constituting the main body rod portion has a thickness of at least 1 mm and a diameter of 2 cm or more.   The bicycle rearview mirror device according to any one of claims 1 to 5, wherein the handle shaft fixing means includes a sliding bearing disposed around the handle shaft.   The said main body stick part is equipped with the extending | stretching part extended ahead beyond the handle | steering-wheel of a bicycle, The said rear-view mirror is engaged with this extending | stretching part. Bicycle rearview mirror device. The rearview mirror is connected to the main body bar through an arm,
The bicycle rearview mirror device according to any one of claims 1 to 7, wherein the arm and the rearview mirror are rotatably engaged, and the arm and the main body bar are also rotatably engaged. .

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