JP2000043772A - Motor assisted bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the operativeness and traveling stability by mounting a battery so that the center of gravity is located immediately above a hanger shaft fitting part of a V-shaped zone to lower the center of gravity of a bicycle. SOLUTION: When right and left lock bars 11d of a battery 11 are positioned in an L-shaped groove 19 in a fixing part 18 of a fitting piece 17, and respectively inserted therein, and a handle 11e is held, and shifted close to a main pipe 6, a center hole in a lock plate 11a is agreed with a lock hole 21a in a lock plate 21. When a key of a bolt lock with the lock hole 21a pierced, is drawn, the lock bars 11d can not be drawn from the L-shaped groove 19, and completely fixed to the fitting piece 17. The center of gravity of the battery 11 is thereby located in a V-shaped zone formed by a riser pipe 4 and a main pipe 6, and immediately above a hanger shaft fitting part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a bicycle in which a pedaling force can be used as a driving power source and an electric power generated by a driving motor and a driving battery. It is intended to improve frameability and to improve frame strength.

[0002]

2. Description of the Related Art Bicycles provided with an auxiliary driving force source in addition to the pedal depression force have been rapidly researched recently, and have already been put to practical use. Specifically, JP-A-57-8097
No. 7 is known. This is achieved by attaching a motor below the frame member (vertical pipe) and attaching a box-like structure containing a battery box and a gear box to the portion of the tubular frame member (lower pipe) near the output shaft, thereby creating a bicycle. Is to improve the appearance.

[0003] Further, the one disclosed in Japanese Utility Model Laid-Open No. 4-35886 is also known. This is between the top tube and the down tube extending parallel to each other from the bottom bracket, or along the seat tube, surrounding the seat tube, or between the seat tube and the rear wheel. By connecting them together, the electrical wiring cords can be shortened to reduce the size and the number of parts.

[0004] As a newer one, Japanese Utility Model Laid-Open No. 4-3
The one disclosed in Japanese Patent Publication No. 65690 is also known.
This is done by attaching an electric motor to the lower part of the seat tube, and arranging a battery and a controller between a parallel top tube and a down tube that extend linearly from the head pipe diagonally downward and rearward, whereby the conventional Compared to the technology that accommodates batteries between the seat tube and the rear wheel, there is no need for an excessively large wheelbase or a small diameter for the rear wheel. You can supply a bicycle.

[0005]

Of the above-mentioned known techniques, the one disclosed in Japanese Patent Application Laid-Open No. 57-80977 is mainly focused on the appearance, and the heavy battery box is located at a lower position. Although it is a great advantage that the stability of the vehicle body is good because it is set to, mounting a relatively large box-shaped structure at such a position requires a hanger shaft in the design of the frame. It is necessary to increase the distance between the front wheel and the front wheel, as a result, the wheelbase length must be taken longer than necessary,
There will be various difficulties in handling and operability.

Further, those disclosed in Japanese Utility Model Laid-Open No. 4-358896 and Japanese Utility Model Laid-Open No. 4-365690 are satisfactorily satisfied in securing an appropriate wheel base and maintaining good appearance. On the other hand, since the position of the heaviest battery is relatively high, the center of gravity is high and the operability and running stability are poor.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention solves some of the above-mentioned problems in the conventional bicycle with an auxiliary power, and demands for weight reduction and strength maintenance of the bicycle.
In addition to optimally balancing the demand for improved appearance, it is necessary to maintain the wheelbase length properly, and especially to install the heavy battery at the lowest possible position. Specifically, in a bicycle in which a pedaling force can be used as a driving power source and an electric power generated by a driving motor and a driving battery can be used in combination, a certain angle is provided from a hanger shaft mounting portion. The battery is mounted so that the center of gravity is located in the V-shaped zone formed by the standing pipe and the main pipe extending in the direction of the head lug, and directly above the hanger shaft mounting portion of the V-shaped zone. Related to bicycles with electric auxiliary power.

Further, the present invention relates to a battery mounting structure in the above-described structure of the bicycle with an electric auxiliary power, wherein a lock plate having a lock bar through hole formed in a central portion, which is protruded from an upper portion of the battery, A locking step formed on the back surface, a binder which can always be urged to the main pipe side at the inner bottom of the V-shaped zone, and which can be locked to the locking step, The present invention also relates to a bicycle with an electrically-assisted power, comprising a lock mechanism mounted substantially at the center and engageable in a through hole of the lock plate.

Further, according to the present invention, there is provided a battery mounting structure in the above-described structure of the bicycle with an electric auxiliary power, wherein a lock plate having a lock bar through hole formed in a central portion, which is protruded upward from the battery, A locking step formed on the back surface, a protrusion protruding forward from the lower side on both sides, and an inner bottom portion of the V-shaped zone, the front end portion is constantly biased toward the main pipe, A binder which can be locked to the locking step portion, a fixing portion which is also provided in the V-shaped zone and receives and fixes the left and right protrusions, and which is attached substantially at the center of a main pipe, and The present invention also relates to a bicycle with an electric auxiliary power, comprising a lock mechanism engageable in a through hole of a plate.

Further, according to the present invention, there is provided a battery mounting structure in the above-described structure of the bicycle with an electric auxiliary power, wherein a lock plate having a lock bar through hole formed in a central portion, which is protruded from an upper portion of the battery, A locking step formed on the back surface, a binder which can always be urged to the main pipe side at the inner bottom of the V-shaped zone, and which can be locked to the locking step, A lock mechanism that is attached substantially at the center and that can be engaged in a through hole of the lock plate, and a connector for connecting or disconnecting a power supply of a battery is integrally attached to the binder. Also related to bicycles.

Further, the present invention relates to a battery mounting structure in the above-described structure of a bicycle with an electric auxiliary power, wherein a lock plate having a lock bar through hole formed in a central portion thereof, which is protruded upward from the battery, A lock bar protruding from both lower sides, a fixing portion attached to the inner bottom of the V-shaped zone, for receiving and fixing the lock bar, and a substantially central portion of a main pipe, and a lock plate penetrating therethrough. The present invention also relates to a bicycle with an electric power assist, comprising a lock mechanism engageable in a hole.

Further, the present invention relates to a battery mounting structure in the above-described structure of a bicycle with an electric auxiliary power, wherein a lock plate having a lock bar through-hole formed in a central portion thereof protruding from an upper portion of the battery; A lock bar protruding from both lower sides, a fixing portion attached to the inner bottom of the V-shaped zone, for receiving and fixing the lock bar, and a substantially central portion of a main pipe, and a lock plate penetrating therethrough. The lock portion is formed of a lock mechanism engageable in the hole, and the fixing portion for receiving and fixing the lock bar has an L-shaped groove having an interval substantially equal to the diameter of the lock bar protruding from both sides of the battery. A bicycle with an electric auxiliary power, characterized in that the opening is formed at the front and the other is formed toward the main pipe. .

Further, the present invention provides a bicycle in which a stepping force and a driving force from a driving motor and a driving battery can be used together as a traveling driving force source. In the case where the battery is mounted in the V-shaped zone formed by the vertical pipe and the main pipe extending in the head lug direction and directly above the hanger shaft mounting portion of the V-shaped zone, the battery includes Having a lock plate with a lock bar through hole formed in the center part where it protruded upward, a lock bar protruding on both lower sides, and further attached to the inner bottom of the V-shaped zone, A fixing portion for receiving and fixing the lock bar; and It consists of a engageable locking means in the passing holes but closing key tablet mechanism also relates to an electric auxiliary powered bicycle, characterized in that there is a common and lock mechanism for restricting the rotation of the wheel.

[0014]

[Function] The conventional bicycle frame structure consisting of a vertical pipe and a main pipe extending in the direction of the head lug, which stands up at a fixed angle from the hanger shaft mounting part, allows the bicycle to be lightest in weight. In addition, it is possible to maintain sufficient strength in spite of keeping the wheelbase length properly, and in particular, just above the hanger shaft mounting part in the V-shaped zone formed by the vertical pipe and the head lug. By installing the battery, particularly, the center of gravity of the bicycle is lowered, and furthermore, the frame strength of the V-shaped zone is further enhanced, and the thickness of the frame can be correspondingly reduced to reduce the weight.

When a battery and a lock mechanism are used for attaching the battery to the inner bottom of the V-shaped zone constituting the frame, first, the battery is placed in a predetermined position, and then the binder is placed on the back of the battery. Attach it to the stop, and attach the lock bar of the lock by penetrating the through hole of the lock plate of the battery. Further, regarding the attachment of the battery to the inner bottom of the V-shaped zone, the lock mechanism and the lock bar protruding from both lower sides of the battery and the lock bar attached to the inner bottom of the V-shaped zone are received. In the case where the lock bar comprises a fixing portion to be fixed, the lock bar is fixed to the fixing portion, and the lock bar of the lock is penetrated through the through-hole of the lock plate of the battery by the lock mechanism and fixed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below with reference to the illustrated embodiment. Reference numeral 1 denotes a hanger shaft mounting portion, 3 denotes a drive motor, and 4 denotes a stand which rises from the hanger shaft mounting portion 1. A pipe, 6 is a main pipe extending in the direction of the head lug 7, which also rises from the hanger shaft mounting portion 1 at a fixed angle, 8 is a front fork, 9 is a chain stay, 10 is a back fork, 11
Represents a battery.

The hanger shaft mounting portion 1 is connected to a drive motor 3 with a built-in controller around a hanger shaft 2 for mounting a hanger (not shown) having a foot pedal on both sides. The vertical pipe 4 is directed substantially upward from the hanger shaft mounting portion 1 and has a seat post receiving portion 5 at the upper end. The main pipe 6 is also directed toward the head lug 7 from the hanger shaft mounting portion 1. The upright pipe 4 and the main pipe 6 are substantially continuous in a state of being curved just above the hanger shaft mounting portion 1, and the upright pipe 4 and the main pipe 6 are configured to rise obliquely forward. 6 form a substantially V-shaped V-shaped zone when viewed from the side.

On the other hand, as shown in the first embodiment of FIG. 2, the battery 11 is protruded upward,
Lock plate 1 with lock bar through hole in center
1a, a handle 11e is provided on the back surface, a locking step 11b is formed, and a connector jack 11g is provided immediately below the locking step 11b. Attached to the direction,
Moreover, a stabilizing bracket 11h having a protruding portion 11c having both left and right ends protruding toward the front is attached.

On the other hand, a lower mounting bracket 12 is integrally formed on the inner bottom of the V-shaped zone formed by the vertical pipe 4 and the main pipe 6 by screwing, and the lower mounting bracket 12 has the above-mentioned projection on the front side. The arch-shaped fixing portion 13 for receiving the portion 11c is connected to the protrusions 11 on both sides described above.
c and a pair of left and right springs 1
4, a binder 15 is provided which is constantly biased in a direction inclining toward the main pipe 6.

Further, the connector 15 is connected to the binder 15.
a is provided integrally, and the binder 15 is
When the connector jack 11g is engaged with the locking step 11b, the connector jacks 11g are electrically connected to each other so that the drive motor 3 can be energized. Further, a cannulated lock 16 is mounted relatively above the main pipe 6 as an example of a lock mechanism.
In this case, the operability of the unlocking key of the lock mechanism is further improved by using the same key as the lock mechanism for restricting the rotation of the wheels. In FIG. 3, reference numeral 11 f denotes an “ON”-“OFF” switch of the battery 11, and when the switch is turned “ON”, the battery 11 and the drive motor 3 are energized to be able to run. .

In the configuration shown in FIG. 2, the handle 11e
, The left and right protrusions 11c of the battery 11 are aligned with and fixed to the fixing portion 13 of the lower mounting bracket 12, and the upper lock plate 11a is aligned with the lock bar 16a of the knuckle lock 16 to lock the lock. When the bar 16a is moved in the axial direction to penetrate the lock holes 16c of the lock plate 11a and the lock plate 16b, the key (not shown) is removed, and the binder 15 is further locked to the lock step 11b of the battery 11. Then, the center of gravity of the battery 11 is located in the V-shaped zone formed by the standing pipe 4 and the main pipe 6 extending in the head lug direction, and directly above the hanger shaft mounting portion 1 in the V-shaped zone. Attach the battery 11 so that it is located at Engage the restrictor jack 11g is electrically conductive. In addition, when traveling, switch 11
f is set to “ON” to start energization of the drive motor 3 to bring the vehicle into a runnable state.

FIG. 3 shows a second embodiment of attachment of the battery 11 to the V-shaped zone of the frame. This is a lock plate 11a at the upper end
The lock bar 11 has a handle 11e, and further has a lock bar 11 protruding in the left and right side direction.
d. A lower mounting bracket 17 as shown in FIG. 2 is integrally formed with a screw at the inner bottom of the V-shaped zone formed by the vertical pipe 4 and the main pipe 6. A fixing portion 18 having an L-shaped groove 19 corresponding to the lock bar 11d is provided.

Further, on the side of the main pipe 6 which faces the upright pipe 4, an upper mounting member 20 is also integrally formed by screwing.
A locking plate 21 having a lock hole 21a in the center
And a lock bar 22a, which has a lock bar 22a which advances and retreats toward a lock hole 21a of the lock plate 21, represents an example of a lock mechanism.
As for the lock mechanism in this case, as in the case of the above-described first embodiment, operability is further improved by using a common key with the lock mechanism that regulates the rotation of the wheels. Note that in FIG.
Reference numeral 1f denotes a switch for switching the battery from “ON” to “OFF”.

In the above-described configuration, the lock bars 11d protruding toward the left and right side surfaces of the battery 11 are respectively positioned in the L-shaped grooves 19 in the fixing portion 18 of the lower mounting bracket 17 and inserted. When the user further holds the handle 11e and shifts it toward the main pipe 6, each lock bar 11d moves horizontally deeper along the L-shaped groove 19, and the upper lock plate 11
The center hole of a coincides with the lock hole 21a of the lock plate 21. Then, the lock bar 22a of the kanuki lock 22 is moved in the axial direction so that the center hole of the lock plate 11a and the lock hole 21a of the locking plate 21 penetrate the key (not shown) of the kanuki lock.
When the lock bar 11d is removed, each lock bar 11d can no longer be pulled out of the L-shaped groove 19 and is completely fixed to the lower mounting bracket 17, whereby the center of gravity of the battery 11 extends in the direction of the head pipe and the upright pipe 4. It is mounted so as to be located within the V-shaped zone formed by the main pipe 6 and directly above the hanger shaft mounting portion 1 of the V-shaped zone.

[0025]

As described above, the present invention relates to a bicycle in which a pedaling force can be used as a driving power source and an electric power generated by a driving motor and a driving battery at a predetermined angle from a hanger shaft mounting portion. The battery is mounted so that the center of gravity is located in the V-shaped zone formed by the standing pipe and the main pipe extending in the direction of the head lug, and directly above the hanger shaft mounting portion of the V-shaped zone. As a result, the conventional bicycle frame structure consisting of a vertical pipe and a main pipe extending in the direction of the head lug, which rises at a certain angle from the hanger shaft mounting part, remains the same as the bicycle, making it possible to reduce the weight of the bicycle as much as possible. it can.

In addition, the strength of the wheel base can be maintained in spite of maintaining the length of the wheel base properly. In particular, the center of gravity of the battery is formed in the inner bottom of the V-shaped zone formed by the vertical pipe and the head lug, that is, The center of gravity of the bicycle is extremely low because it is located just above the hanger shaft mounting part, handling and running stability and appearance are good, and the frame strength of the V-shaped zone is further enhanced. It is strengthened, and the weight of the frame can be reduced by reducing the thickness of the frame.

In this case, the means for attaching the battery uses a binder and a lock mechanism, or is attached to the lock mechanism and a lock bar protruding from both lower sides of the battery and an inner bottom of the V-shaped zone. However, in the case of the fixing means using the fixing portion for receiving and fixing the lock bar, the fixing means is not only solid as a heavy battery fixing means but also provided with a locking mechanism, which may cause mischief or theft. Is also significantly reduced.

In this case, when the unlocking key of the locking mechanism is shared with the unlocking key of the locking mechanism for controlling the rotation of the wheels, the handling of the bicycle is further improved.
Furthermore, if the connector for connecting or disconnecting the battery power is integrally attached to the binder itself for attaching the battery, it is more rational because the battery power can be connected at the same time when the battery installation work is completed. Become a target.

[Brief description of the drawings]

FIG. 1 is a side view of a frame of a bicycle with an electric assist power according to an embodiment of the present invention, showing a state where a battery is mounted.

FIG. 2 is an enlarged side view of a main part showing a first embodiment of a part for mounting a battery on a frame.

FIG. 3 is an enlarged perspective view of a main part showing a second embodiment of a part for mounting a battery on a frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hanger attachment part 2 Hanger shaft 3 Drive motor 4 Upright pipe 5 Seat post receiving part 6 Main pipe 7 Head lug 8 Front fork 9 Chain stay 10 Back fork 11 Battery 11a Lock plate 11b Lock step 11c Projection 11d Lock bar 11e Handle 11f Switch 11g Connector jack 11h Stabilizing bracket 12 Lower mounting bracket 13 Fixing part 14 Spring 15 Binder 15a Connector 16 Lock lock 16a Lock bar 16b Locking plate 17 Lower mounting bracket 18 Fixed section 19 L-shaped groove 20 Upper mounting bracket 21 Lock Plate 21a Lock hole 22 Kannuki lock 22a Lock bar

Claims (1)

[Claims] A bicycle in which a treading force and a driving force of a driving motor and a driving battery can be used together as a traveling driving force source. A bicycle with an electrically-assisted power source, wherein a battery is mounted in a V-shaped zone formed by a main pipe extending in a head lug direction, and a center of gravity is located immediately above a hanger shaft mounting portion of the V-shaped zone.