JP4094719B2 - Bicycle stand - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bicycle stand capable of automatically locking a leg portion pivotally supported on a mounting plate fixed to a vehicle body.
[0002]
[Prior art]
Conventional bicycle stands generally have a leg portion pivoted on a mounting plate fixed to a vehicle body between a stand lock position where the stand stands substantially vertically and a substantially horizontal jumping storage position. It is configured to be swingable, and adopts a front locking position and a rear unlocking position by a pulling force that exceeds the pivot point of the main spring that is pivotally supported by the leg part and stretched between the mounting plate. A device that uses the lock plate to stand-lock or flip-up the leg is widely used.
Normally, the leg plate is locked or jumped up and stored by kicking down or kicking up the lock plate pivotally supported by the leg portion with one foot.
In other words, the leg is locked by two actions of kicking the lock plate with one leg following the standing action with one leg of the leg. This was followed by two movements in which the leg was flipped up with one leg following the kicking movement at
For this reason, troublesome stand locks involving two movements are often omitted, and the legs jumped up when parked on a hill or the like, and the bicycle started to run, or it was dangerous due to collapse of the load due to falling.
[0003]
In order to solve the technical problem of such troublesome stand lock with two movements, for example, the one that enables the stand to be locked by one movement as disclosed in Japanese Utility Model Publication No. 63-37349 is disclosed. was suggested.
However, in this case, the locking device can be automatically locked and released in one operation in conjunction with the leg standing operation and the lifting and storing operation with one foot. It is necessary to always kick up one foot, and pushing a heavy bicycle leg like a power-assisted bicycle while kicking it with one foot is unstable, and it is extremely dangerous especially for women and women. It was.
Further, the operating rod is formed in a comparatively long size, which is not easy to handle and is dangerous because it may be caught on clothes.
In order to solve such a problem of the locking device, the locking device automatically performs the locking operation in conjunction with the standing motion of the leg portion, and the locking device is operated with one foot prior to the lifting and retracting operation of the leg portion. After releasing, it has been proposed that the bicycle can be stowed and stowed by stably pushing out the bicycle with both feet landing.
[0004]
[Problems to be solved by the invention]
As examples of the proposal, there are stands disclosed in, for example, Japanese Patent Laid-Open Nos. 64-1669 and 10-45070.
With the emergence of these stands, the locking device automatically locks in conjunction with the standing motion of the legs, and even women and the elderly can lock the locking device prior to the lifting and retracting operation of the legs. After releasing with one foot, it is possible to jump and retract the leg by stably pushing out the bicycle with both feet landing, but in the former example, the contact member in the lock piece is It is always in contact with the cam surface of the mounting body, and there is a problem with wear resistance and durability. In addition, due to its structure, the lock release feeling is poor, and the spring force must be strengthened to hold the lock, etc. The required operating force of the lock piece has also increased. In addition, the cam surface of the mounting body is exposed to the outside, and is susceptible to dust adhesion and damage.
In the latter example, the hook piece pivotally supported by the support frame to lock the lock portion is a cantilever-like small piece, which has a problem in strength, and the lock portion is exposed and is not dusty. It was susceptible to adhesion and damage and was inferior in durability.
Furthermore, the lateral deformation of the lock part may cause a problem in the engagement between the claw and the hook piece in the lock part.
[0005]
Accordingly, an object of the present invention is to provide a bicycle stand that solves the problems in the conventional bicycle stand and is excellent in durability and capable of performing a light and reliable locking operation. .
[0006]
[Means for Solving the Problems]
For this reason, the present invention relates to a stand-lock position and a retracted storage position in which the leg portion pivotally supported on the mounting plate fixed to the vehicle body is engaged and disengaged with the mounting plate pivotally supported on the leg portion. In the bicycle stand configured to be swingable between the upper and lower ends of the bicycle , the upper end of the lock plate is urged toward the rear side of the vehicle body, which is opposite to the lock plate, and the rearward swing is restricted, and the auxiliary lock A mounting plate cam for forcibly swinging the auxiliary lock plate is provided in the lower portion of the mounting plate in the swinging locus of the auxiliary lock plate accompanying the swing of the leg portion. It is characterized by that.
Further, the present invention is characterized in that the mounting plate cam is provided inside the mounting plate.
The present invention is the formed sufficiently long length of the mounting plate, the low position of the support shaft to the mounting plate of the leg portion by shortening the length of the relatively legs against the mounting plate It is characterized by being configured in a position.
Further, the present invention is characterized in that a lower end portion of the leg portion is bent to form a grounding portion, and these are used as means for solving the problems.
[0007]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show an embodiment of a bicycle stand according to the present invention. FIG. 1 is a side view of a stand lock state, FIG. 2 is a side view of a lock release state, and FIG. 4 is a side view of the leg part in the retracted state, FIG. 5 is a side view of the leg part in the locked state, and FIG. 6 is a side view of the leg part in the standing state and immediately before the locking state. It is shown.
As shown in FIG. 1, the bicycle stand according to the present invention has legs attached to a lower portion of a mounting plate 1 fixed in the vicinity of a vehicle body at a connecting portion between a rear end portion of a chain stay for a rear wheel (not shown) and a lower end portion of a back fork. An upper end portion of the portion 2 is pivotally supported by a leg support shaft 5, and the leg portion 2 engages and disengages the lock plate 3 pivotally supported by the leg portion 2 by the lock plate support shaft 6. Thus, it is configured to be swingable between a stand lock position and a flip-up storage position.
[0008]
A main spring 8 is stretched between the intermediate portion of the mounting plate 1 and the intermediate portion of the lock plate 3, and the main spring 8 passes over the leg support shaft 5 in front or behind, so that the leg portion 2 is urged to an upright position or urged to a retracted storage position, and the lock plate 3 is urged forward or backward to urge the lock plate 3 to the lock position, or to the lock release position. It is configured to be energized.
With respect to the engagement / disengagement of the lock plate 6 with respect to the mounting plate 1, the mounting plate recess 1 </ b> B is engraved on the lower front surface of the mounting plate 1, while the lock at a position to be locked in correspondence with the mounting plate recess 1 </ b> B. A lock claw 3 </ b> A projects from the upper front surface of the plate 3.
Further, the length of the mounting plate 1 is formed sufficiently long, and the leg portion 2 is formed relatively short with respect to the mounting plate 1, so that the mounting plate 1 of the leg portion 2 is moved to the mounting plate 1. The position of the leg support shaft 5 is set to a low position.
Further, the lower end of the leg portion 2 is grounded portion 2A is made the shape by bending backward to substantially right angles.
[0009]
In the present invention, as shown in the embodiment of FIG. 1, in addition to the above configuration, the auxiliary lock plate 4 is spring-biased in a state in which the rearward swinging is restricted at the intermediate rear portion of the lock plate 3. And the mounting plate cam 1A for forcibly swinging the auxiliary lock plate 4 in the swinging locus of the auxiliary lock plate 4 accompanying the swinging of the leg portion 2. The attachment plate cam 1 </ b> A is particularly preferably provided inside the attachment plate 1.
The upper end of the auxiliary lock plate 4 is biased to the opposite side of the lock plate 3, that is, to the rear side of the vehicle body by a torsion spring 9 fitted on the outer periphery of the auxiliary lock plate support shaft 7, etc. The backward swinging is restricted. Therefore, the upper end portion of the auxiliary lock plate 4 can be swung toward the lock plate 3 against the restoring force of the torsion spring 9 from the state shown in the figure.
[0010]
The operation of the stand of the present invention configured as described above will be described. When the lower part of the lock plate 3 is kicked down with one foot against the restoring force of the main spring 8 from the stand lock state of FIG. Since the lock claw 3A on the upper front surface of the upper plate is detached from the mounting plate recess 1B on the lower front surface of the mounting plate 1, the main spring 8 moves rearward over the lock plate supporting shaft 6 as shown in FIG. Even if the lock plate 3 is released from the lock plate 3, the lock plate 3 maintains the unlocked state.
Next, as shown in FIG. 2 to FIG. 3, the rider pushes the vehicle body such as a bicycle forward in a stable state with both feet on the ground, whereby the leg portion 2 starts to swing backward. When the main spring 8 moves rearward beyond the leg support shaft 5 which is a shaft support portion of the leg 2 to the mounting plate 1, the leg 2 is automatically moved as indicated by the arrow by the restoring force of the main spring 8. It will be bounced up.
At this time, the upper end portion of the auxiliary lock plate 4 that is pivotally supported by the intermediate rear portion of the lock plate 3 abuts against the front surface of the mounting plate cam 1A provided on the lower inner side of the mounting plate 1. It swings forward against the restoring force and can escape from the forcing force of the cam from the mounting plate cam 1A.
Further, until reaching the flip-up storage position shown in FIGS. 3 to 4, the upper end portion of the auxiliary lock plate 4 is detached from the mounting plate cam 1A and is released from contact such as friction.
A symbol X indicates a stopper position that regulates the upper end position of the leg 2.
[0011]
Next, when the leg portion 2 is kicked down with one leg in order to erect the leg portion 2 from the retracted state of the leg portion in FIG. 4, as shown in FIG. Comes into contact with the rear surface of the mounting plate cam 1A.
Since the auxiliary lock plate 4 is restricted from swinging further backward with respect to the lock plate 3, as the leg portion 2 is kicked forward, the cam action on the rear surface of the mounting plate cam 1A The lock plate 3 itself starts to rotate around the lock plate spindle 6 in the lock direction as shown by the arrow via the auxiliary lock plate 4.
As shown in FIG. 6, when the main spring 8 moves forward beyond the lock plate support shaft 6 by further swinging the leg 2 forward, the lock plate 3 is biased to the forward lock position. When this is held and the main spring 8 further moves forward beyond the leg support shaft 5, the leg 2 is kept in a forward biased state, and then the lock claw 3 </ b> A on the front face of the upper end of the lock plate 3 is moved. 1 is locked in the mounting plate recess 1B on the lower front surface of the mounting plate 1 to be in the stand lock state of FIG.
[0012]
As described above, the embodiment of the present invention has been described, but within the scope of the present invention, the shape of the lock plate, the shape of the auxiliary lock plate, the related configuration of the lock plate and the auxiliary lock plate, the shape of the mounting plate cam , A related configuration of a cam portion that performs a cam action between the mounting plate cam and the auxiliary lock plate, an installation form of the mounting plate cam on the mounting plate, a torsion spring laying form on the auxiliary lock plate, and a lock claw of the lock plate And the mounting plate recess of the mounting plate, the ratio of the length between the mounting plate and the leg, the shape of the ground contact portion of the leg, and the like can be appropriately selected.
[0013]
【The invention's effect】
As described above, according to the present invention, the locked state with the legs standing up is stable with both wheels of the vehicle in contact with the ground. When starting from an unstable state in which the rear wheels, etc. have floated, first release the locked state only by kicking down the lock plate of one foot, then with both feet landed The leg portion can be automatically flipped up by stably pushing out a vehicle such as a bicycle, and even a woman or an elderly person can stand up or store the leg portion extremely stably and lightly.
[0014]
In particular, according to the present invention, since the lock plate is locked or released via the auxiliary lock plate pivotally supported by the lock plate, the lock plate can be reliably operated, and the auxiliary lock plate The forcible cam action is performed by the cam member provided on the mounting plate, which is the most stable part in terms of strength, and not only the durability is improved, but the auxiliary lock plate locks or releases the lock plate. Since it can be configured to be in sliding contact with the cam member only at the time, the degree of wear due to friction or the like is reduced, and the durability is further improved.
The auxiliary lock plate pivotally supported by the lock plate can easily escape from the mounting plate cam after unlocking by a slight biasing force of a torsion spring laid on the auxiliary lock plate. By always causing itself in the swinging locus, even if dust or the like adheres, a reliable cam operation with respect to the mounting plate cam can be realized and the lock plate can be securely locked.
[0015]
Further, if the mounting plate cam is provided on the inner side of the mounting plate, the operating surfaces of the auxiliary locking plate and the mounting plate cam that are sliding contact portions for locking or releasing the auxiliary locking plate are not exposed to the outside. As a result, there was no damage due to dust adhesion or impact from external force, and durability was further improved.
Further, the length of the mounting plate is formed sufficiently long, the lower position the position of the support shaft to the mounting plate of the leg portion by shortening the length of the relatively legs against the mounting plate 1 Due to the configuration, when the leg portion is erected, the swing radius is small, so that it is not necessary to lift a heavy vehicle body such as an electric assist bicycle, and the vehicle body can be easily erected.
Further, if the lower end portion of the leg portion is bent to form the grounding portion, the vehicle body can be raised more easily using the principle of the lever.
As described above, according to the present invention, there is provided a bicycle stand that has excellent durability and can perform a light and reliable locking operation.
[Brief description of the drawings]
FIG. 1 shows a bicycle stand according to an embodiment of the present invention and is a side view of a stand lock state.
FIG. 2 is a side view showing an embodiment of the bicycle stand according to the present invention in an unlocked state.
FIG. 3 is a side view showing a bicycle stand according to an embodiment of the present invention in a state where a leg portion is being lifted up.
FIG. 4 is a side view showing a bicycle stand according to an embodiment of the present invention, in a state where the legs are raised and retracted.
FIG. 5 is a side view of a bicycle stand according to an embodiment of the present invention in a locked start state while a leg portion is standing.
FIG. 6 is a side view showing a bicycle stand according to an embodiment of the present invention, in a state immediately before a leg is raised and locked.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mounting plate 1A Mounting plate cam 2 Leg 2A Grounding part 3 Lock plate 3A Lock claw 4 Auxiliary lock plate 5 Leg support shaft 6 Lock plate support shaft 7 Auxiliary lock plate support shaft 8 Main spring 9 Torsion spring

Claims (4)

The leg portion pivotally supported by the mounting plate fixed to the vehicle body can swing between the stand lock position and the raised storage position by engaging and disengaging the locking plate pivotally supported by the leg portion with the mounting plate. In the bicycle stand constructed as described above , the upper end of the lock plate is biased toward the rear side of the vehicle body, which is the opposite side of the lock plate, and swinging backward is restricted to bias the auxiliary lock plate as a spring. And a mounting plate cam for forcibly swinging the auxiliary lock plate is provided in a lower portion of the mounting plate in a swing locus of the auxiliary lock plate accompanying the swing of the leg portion. Bicycle stand.   The bicycle stand according to claim 1, wherein the mounting plate cam is provided inside the mounting plate. The length of the mounting plate is made sufficiently long, the length of the leg portion is made relatively short with respect to the mounting plate, and the position of the support shaft to the mounting plate of the leg portion is configured at a low position. The bicycle stand according to claim 1 or 2.   The bicycle stand according to any one of claims 1 to 3, wherein a lower end portion of the leg portion is bent to form a grounding portion.

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