GB2380716A - Frame for an electric scooter - Google Patents

Frame for an electric scooter Download PDF

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Publication number
GB2380716A
GB2380716A GB0124293A GB0124293A GB2380716A GB 2380716 A GB2380716 A GB 2380716A GB 0124293 A GB0124293 A GB 0124293A GB 0124293 A GB0124293 A GB 0124293A GB 2380716 A GB2380716 A GB 2380716A
Authority
GB
United Kingdom
Prior art keywords
pivotal bar
pivot
frame
bar
pivotal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0124293A
Other versions
GB2380716B (en
GB0124293D0 (en
Inventor
Samuel Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0124293A priority Critical patent/GB2380716B/en
Publication of GB0124293D0 publication Critical patent/GB0124293D0/en
Publication of GB2380716A publication Critical patent/GB2380716A/en
Application granted granted Critical
Publication of GB2380716B publication Critical patent/GB2380716B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
    • B60G9/02—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle or housing being pivotally mounted on the vehicle, e.g. the pivotal axis being parallel to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/30—Rigid axle suspensions
    • B60G2200/32—Rigid axle suspensions pivoted
    • B60G2200/322—Rigid axle suspensions pivoted with a single pivot point and a straight axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/40—Indexing codes relating to the wheels in the suspensions
    • B60G2200/44—Indexing codes relating to the wheels in the suspensions steerable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2300/00—Indexing codes relating to the type of vehicle
    • B60G2300/13—Small sized city motor vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

A frame for an electric scooter has a body (10), a pivotal bar (20), two wheel mounts (18), two resilient members (24) and two tabs (14). The pivotal bar (20) is pivotally attached to the body (10). Each wheel mount (18) is pivotally attached to one end of the pivotal bar (20) in a longitudinal direction. The resilient members (24) are attached to the top of the pivotal bar (20). The tabs (14) are secured to the body (10) and respectively abut one of the resilient members (24). Consequently, one of the resilient members (24) will be compressed when one of the front wheels (19) is bumped. This can keep the force applied to the front wheel (19) from being transmitted to the body (10) and the steering bar. To steer and to drive the electric scooter become easier.

Description

<Desc/Clms Page number 1>
FRAME FOR AN ELECTRIC SCOOTER 1. Field of the Invention The present invention relates to a frame, and more particularly to a frame with a shock-absorbing device for an electric scooter.
2. Description of Related Art An electric scooter is used to help a person to move from place to place at a low speed. The conventional electric scooter substantially comprises a frame, two front wheels, two rear wheels, a seat, an electric motor and a steering bar. The front wheels are rotatably attached to the front end of the frame. The rear wheels are rotatably attached to the rear end of the frame. The seat is mounted on the frame for a user to sit. The electric motor is mounted on the frame to drive the rear wheels. The steering bar is pivotally mounted on the frame and is connected to the front wheels by a linking device, such that the direction in which the electric scooter travels is controlled by means of pivotally rotating the steering bar.
However, there is no shock-absorbing device for the front wheels of the conventional electric scooter. When one of the front wheels bumps an object, the force applied to the front wheel will be directly transmitted to the steering bar and frame. To steer the steering bar and to drive the electric scooter are uncomfortable.
To overcome the shortcomings, the present invention provides an improved frame to mitigate or obviate the aforementioned problems.
The main objective of the invention is to provide an improved frame for an electric scooter that makes steering and driving the electric scooter easier and keeps any force applied to the front wheel from being transmitted to the frame. The frame has a body, a pivotal bar, two wheel mounts, two resilient members and two tabs. The
<Desc/Clms Page number 2>
pivotal bar is pivotally attached to the front end of the body. Each wheel mount is pivotally attached to one end of the pivotal bar in a longitudinal direction. One of the front wheels is rotatably attached to each of the wheel mounts. The resilient members are attached to the top of the pivotal bar. The tabs are secured to the body and respectively abut one of the resilient members. With such an arrangement, one of the resilient members will be compressed to absorb the shock when one of the front wheels is bumped. To steer and to drive the electric scooter is easier.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
IN THE DRAWINGS Fig. 1 is a perspective view of an electric scooter with a frame in accordance with the present invention; Fig. 2 is a perspective view of the frame in accordance with the present invention; Fig. 3 is an exploded perspective view of the shock-absorbing device on the frame in Fig. 2; Fig. 4 is a front plan view of the frame in Fig. 2; and Fig. 5 is an operational front plan view of the frame in Fig. 4 showing the operation of the shock-absorbing device when one of the front wheels of the scooter is bumped by an object.
With reference to Figs. 1 to 3, a frame for an electric scooter in accordance with the present invention comprises a body (10), two tabs (14), a pivotal bar (20), two wheel mounts (18) and two resilient members (24). The body (10) has a lateral
<Desc/Clms Page number 3>
beam (12) with a middle and two ends. The middle of the lateral beam (12) is attached to the front end of the body (10). A pivot (122) with an outer thread is securely attached to the middle position of the lateral beam (12) and extends from the front of the lateral beam (12). The two tabs (14) are respectively secured to opposite ends of the lateral beam (12).
The pivotal bar (20) has a middle position and two ends and is pivotally attached to the lateral beam (12). A longitudinal through hole (202) is defined in the middle position of the pivotal bar (20) through which the pivot (122) extends. A nut (16) is screwed onto the pivot (122) and abuts the pivotal bar (20), such that the pivotal bar (20) is pivotally attached to the lateral beam (12) with the pivot (122) in cooperation with the nut (16). In addition, two bushings (17,172) are mounted in the through hole (202) in the pivotal bar (20) to reduce the friction between the pivot (122) and the inner surface of through hole (202) in the pivotal bar (20). The pivotal rotation of the pivotal bar (20) relative to the pivot (122) will be smoother.
A vertical tube (22) is mounted on each end of the pivotal bar (20). The two wheel mounts (18) are respectively pivotally attached to the vertical tubes (22) with a pivot pin (not shown). The front wheels (19) of the scooter are respectively rotatably attached to the wheel mounts (18). A linking device (not shown) is arranged between the steering bar (not shown) of the scooter and the wheel mounts (18). Consequently, the wheel mounts (18) with the front wheels (19) can be pivotally rotated relative to the frame by means of pivotally rotating the steering bar. The direction of travel of the electric scooter is controlled.
Two recesses (204) are defined in the top of the pivotal bar (20) and correspond to the tabs (14) on the lateral beam (12). Each resilient member (24) is
<Desc/Clms Page number 4>
mounted in one of the recesses (204) in the pivotal bar (20) and abuts the corresponding tab (14). Each resilient member (24) can be a cylindrical block of a resilient material like rubber or silicon. In another embodiment, each resilient member (24) can be a spring.
With reference to Figs. 4 and 5, when one of the front wheels (19) of the electric scooter bumps an object, the pivotal bar (20) will pivotally rotate relative to the lateral bar (12) with the pivot (122) due to the force applied to the front wheel (19).
The resilient member (24) near the bumped front wheel (19) will be compressed by the corresponding tab (14) to absorb the force applied to the bumped front wheel (19).
This can keep the force from being transmitted to the body (10) or the steering bar of the scooter. To steer and to drive the scooter become is easier.
When the force applied to the front wheel (19) is released, the pivotal bar (20) will pivotally rotate to the original position relative to the body (10) by means of the restitution force provided by the resilient member (24).

Claims (8)

  1. CLAIMS: I. A frame for an electric scooter having two front wheels, the frame comprising : a body; a pivotal bar pivotally attached to a front end of the body; two wheel mounts respectively pivotally attached to opposite ends of the pivotal bar in a longitudinal direction and adapted for one of the front wheels to be rotatably attached to the wheel mount; two resilient members attached to a top of the pivotal bar; and two tabs secured to the frame and respectively abutting one of the resilient members so as to push the abutting resilient member to absorb shock when one of the front wheels is bumped.
  2. 2. The frame as claimed in claim 1 further comprising a pivot with an outer thread securely attached to the front end of the body; a longitudinal through hole defined in a middle position of the pivotal bar through which the pivot extends; a nut screwed onto the pivot and abutting the pivotal bar so as to pivotally attach the pivotal bar to the body with the pivot in cooperation with the nut; and at least one bushing mounted in the longitudinal through hole in the pivotal bar to reduce friction between the pivot and an inner surface of through hole in the pivotal bar.
  3. 3. The frame as claimed in claim 2, wherein the body has a lateral beam integrally mounted on the front end of the body to pivotally attach the pivotal bar on the lateral beam,
    <Desc/Clms Page number 6>
    wherein the pivot is mounted on a middle position of the lateral beam; and the tabs are respectively secured to opposite ends of the lateral beam.
  4. 4. The frame as claimed in claim 1, wherein each resilient member is a block made of a resilient material.
  5. 5. The frame as claimed in claim 1, wherein each resilient member is a spring.
  6. 6. The frame as claimed in claim 1, wherein the pivotal bar has recesses defined in the top of the pivotal bar and corresponding to each tab on the body to hold each resilient member.
  7. 7. The frame as claimed in claim 6, wherein each resilient member is a block made of a resilient material.
  8. 8. A frame for an electric scooter having two front wheels substantially as described herein with reference to and as illustrated in the accompanying drawings.
    8. The frame as claimed in claim 6, wherein each resilient member is a spring.
    9. The frame as claimed in claim I further comprising a vertical tube mounted on each end of the pivotal bar for one of the wheel mounts to be pivotally attached to the tube with a pivot pin extending through the tube.
    10. The frame as claimed in claim I further comprising a pivot with an outer thread securely attached to the front end of the body; a through hole is defined in a middle position of the pivotal bar through which the pivot extends; a nut screwed onto the pivot and abutting the pivotal bar so as to pivotally attach the pivotal bar to the body with the pivot in cooperation with the nut; at least one bushing mounted in the through hole in the pivotal bar to reduce friction between the pivot and an inner surface of through hole in the pivotal bar;
    <Desc/Clms Page number 7>
    a lateral beam integrally mounted on the front end of the body to pivotally attach the pivotal bar on the lateral beam; recesses defined in the top of the pivotal bar and corresponding to each tab on the body to receive each resilient member; and a vertical tube mounted on each end of the pivotal bar for one of the wheel mounts to be pivotally attached to the tube with a pivot extending through the tube, wherein the pivot is mounted on a middle position of the lateral beam; and the tabs are respectively secured to opposite ends of the lateral beam.
    <Desc/Clms Page number 8>
    Amendments to the claims have been filed as follows 1. A frame for an electric scooter having two front wheels, the frame comprising : a body ; a pivotal bar pivotally attached to a front end of the body; two wheel mounts respectively pivotally attached to opposite ends of the pivotal bar in a longitudinal direction wherein the front wheels are each rotatably attached to one of the wheel mounts; two resilient members attached to a top of the pivotal bar; and two tabs secured to the frame and each respectively abutting one of the resilient members so as to push the abutting resilient member to absorb shock when one of the front wheels is bumped; wherein the pivotal bar has recesses defined in the top of the pivotal bar and corresponding to each tab on the body to hold each resilient member.
    2. The frame as claimed in Claim 1 further comprising a pivot with an outer thread securely attached to the front end of the body; a longitudinal through hole defined in a middle position of the pivotal bar through which the pivot extends; a nut screwed onto the pivot and abutting the pivotal bar so as to pivotally attach the pivotal bar to the body with the pivot in cooperation with the nut; and at least one bushing mounted in the longitudinal through hole in the pivotal bar to reduce friction between the pivot and an inner surface of through hole in the pivotal bar.
    3. The frame as claimed in Claim 2, wherein the body has a lateral beam integrally mounted on the front end of the body to pivotally attach the pivotal bar on the lateral beam, wherein the pivot is mounted on a middle
    <Desc/Clms Page number 9>
    position of the lateral beam; and the tabs are respectively secured to opposite ends of the lateral beam.
    4. The frame as claimed in Claim 1, wherein each resilient member is a block made of a resilient material.
    5. The frame as claimed in Claim 1, wherein each resilient member is a spring.
    6. The frame as claimed in Claim 1 further comprising a vertical tube mounted on each end of the pivotal bar for one of the wheel mounts to be pivotally attached to the tube with a pivot pin extending through the tube.
    7. The frame as claimed in Claim 1 further comprising a pivot with an outer thread securely attached to the front end of the body; a through hole defined in a middle position of the pivotal bar through which the pivot extends; a nut screwed onto the pivot and abutting the pivotal bar so as to pivotally attach the pivotal bar to the body with the pivot in cooperation with the nut; at least one bushing mounted in the through hole in the pivotal bar to reduce friction between the pivot and an inner surface of the through hole in the pivotal bar; a lateral beam integrally mounted on the front end of the body to pivotally attach the pivotal bar on the lateral beam; recesses defined in the top of the pivotal bar and corresponding to each tab on the body to receive each resilient member; and a vertical tube mounted on each end of the pivotal bar for one of the wheel mounts to be pivotally attached to the tube with a pivot extending through the tube, wherein the pivot is mounted on a middle position of the lateral beam; wherein
    <Desc/Clms Page number 10>
    the tabs are respectively secured to opposite ends of the lateral beam.
GB0124293A 2001-10-10 2001-10-10 Frame for an electric scooter Expired - Fee Related GB2380716B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0124293A GB2380716B (en) 2001-10-10 2001-10-10 Frame for an electric scooter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0124293A GB2380716B (en) 2001-10-10 2001-10-10 Frame for an electric scooter

Publications (3)

Publication Number Publication Date
GB0124293D0 GB0124293D0 (en) 2001-11-28
GB2380716A true GB2380716A (en) 2003-04-16
GB2380716B GB2380716B (en) 2003-09-03

Family

ID=9923547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0124293A Expired - Fee Related GB2380716B (en) 2001-10-10 2001-10-10 Frame for an electric scooter

Country Status (1)

Country Link
GB (1) GB2380716B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406079A (en) * 2003-09-16 2005-03-23 Sunpex Technology Co Ltd Shock absorbing structure of turning mechanism of an electric cart equipped with twin front wheels

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767133A (en) * 1986-03-14 1988-08-30 Yamaha Hatsudoki Kabushiki Kaisha Suspension means for small vehicles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767133A (en) * 1986-03-14 1988-08-30 Yamaha Hatsudoki Kabushiki Kaisha Suspension means for small vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406079A (en) * 2003-09-16 2005-03-23 Sunpex Technology Co Ltd Shock absorbing structure of turning mechanism of an electric cart equipped with twin front wheels
GB2406079B (en) * 2003-09-16 2005-11-09 Sunpex Technology Co Ltd Shock absorbing structure of turning mechanism of an electric cart equipped with twin front wheels

Also Published As

Publication number Publication date
GB2380716B (en) 2003-09-03
GB0124293D0 (en) 2001-11-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20121010