WO2024113846A1

WO2024113846A1 - Fixing structure for battery cases of mobility scooter

Info

Publication number: WO2024113846A1
Application number: PCT/CN2023/104503
Authority: WO
Inventors: 吕开拓; 徐天波; 吕鑫
Original assignee: 浙江联宜电机有限公司
Priority date: 2022-11-30
Filing date: 2023-06-30
Publication date: 2024-06-06
Also published as: CN115871829A

Abstract

The present invention relates to a mobility scooter, and in particular to a fixing structure for battery cases of the mobility scooter. The fixing structure for the battery cases of the mobility scooter comprises a frame; the frame is provided with a battery case mounting position; limiting parts used for limiting movement of the battery cases in the horizontal direction are provided at the battery case mounting position; a locking mechanism is provided on each of two opposite sides of the battery case mounting position of the frame; at least one locking mechanism comprises a connecting rod; the lower end of the connecting rod is hinged to and fixed to the frame; the connecting rod is sleeved with a pressing block and a locking knob; threaded structures matched with each other are provided on the inner wall of an inner hole of the locking handle and the outer wall of the connecting rod; the pressing block is provided with pressing parts extending laterally; and the connecting rod is provided with a limiting block used for avoiding excessive downward movement of the pressing block. The present invention has the advantages of convenient and labor-saving removal of battery cases, and further has the advantages of allowing for a lager utilization space below a seat to achieve of usage of larger-size battery cases, thereby improving the endurance mileage.

Description

Battery box fixing structure for scooter

Technical Field

The invention relates to an electric scooter, in particular to a battery box fixing structure for the scooter.

Background technique

The patent with publication number CN214689938U discloses a fixing structure of the battery box of an electric scooter, including an electric scooter body, a battery box and a fixing device, wherein the electric scooter body includes a foot pedal and a seat column, and the electric scooter body is provided with an upwardly open battery compartment on the lower side of the seat, and the fixing device includes a lock handle and a lock; the lock is mounted on the battery box or the foot pedal; the lock handle is connected to the seat column by a hinge, and the lock handle is connected to the lock; the lock consists of a lock head and a lock core. In the above scheme, the lock can be released by rotating the lock core of the lock. Among them, the battery compartment is used to limit the horizontal movement of the battery box, and the side wall of the battery compartment constitutes a limit portion for limiting the movement of the battery box.

Since the lock handle is long along the front-to-back direction of the mobility scooter and covers the battery box, when the user takes out the battery box, he needs to first use one hand to flip the entire lock handle upward and support it. After the lock handle is kept at a certain flip height, the user takes out the battery box from the mobility scooter body with the other hand. In order to increase the driving range, the battery box of the existing mobility scooter is large in size, resulting in a heavy battery box, which is not convenient for users (especially the elderly) to lift the battery box with one hand; in order to facilitate users to lift the battery box, some mobility scooters are equipped with two battery boxes to reduce the weight of a single battery box. If the above solution also adopts the setting of two battery boxes, it is necessary to increase the covering area of the lock handle, which will increase the weight of the lock handle, or to set two fixing devices, each of which is used to fix a battery box, which will make it more difficult for users to take and put the battery box, or require users to take out the two battery boxes in two times.

technical problem

The object of the present invention is to provide a battery box fixing structure for a mobility scooter, which is more labor-saving and convenient for taking and placing the battery box.

Technical Solutions

To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a battery box fixing structure for a mobility scooter, comprising a frame, the frame being provided with a battery box mounting position, the battery box mounting position being provided with a limit portion for limiting the horizontal movement of the battery box, and characterized in that: a locking mechanism is respectively provided on two opposite sides of the battery box mounting position of the frame, at least one locking mechanism comprises a connecting rod, the lower end of the connecting rod is hingedly fixed to the frame, a clamping block and a locking handle are sleeved on the connecting rod, the locking handle has an inner hole, and a threaded structure that cooperates with each other is provided between the inner wall of the inner hole of the locking handle and the outer wall of the connecting rod, the clamping block has a clamping portion that extends laterally and is used to limit the upward displacement of the battery box, and the connecting rod is provided with a limit block for preventing the clamping block from moving downward excessively.

When the user needs to remove the battery box from the mobility scooter, the user first turns the locking handle, then pushes the locking handle to flip the connecting rod away from the battery box, thereby canceling the limit on the battery box, and finally lifts the battery box upward to remove the battery box.

When the battery box of the present invention is taken out, fewer steps are required to release the lock of the battery box, and there is no need to support the locking mechanism. The user can lift the battery box with both hands, which can make the removal of the battery box more convenient and labor-saving. Among them, the present invention uses two locking mechanisms to achieve the locking and fixing of the battery box. It only needs to flip the connecting rod of the locking mechanism at a small angle to make the pressing part deviate from the battery box. The height position change when the connecting rod is flipped is small, which is convenient for arranging the locking mechanism and the battery box on the lower side of the seat, and can make the space under the seat for placing the battery box larger, so that the scooter of the present invention can use a larger battery box to increase the cruising range. Among them, the limiting part of the present invention can adopt any existing structure of the scooter for limiting the horizontal movement of the battery box. A battery compartment with an upward opening can be set at the battery box installation of the scooter, and the side wall of the battery compartment is used as the limiting part; a protrusion extending upward can also be set at the battery box installation or a component can be fixed at the battery box installation, and the protrusion or component can be used as the limiting part.

Preferably, a compression spring is sleeved on the connecting rod, and the compression spring is located between the limit block and the pressing block. By providing the compression spring, the user does not need to lift the pressing part, which can make the locking release of the locking mechanism of the present invention more convenient and labor-saving.

Preferably, the battery box installation site is used to install two battery boxes, the connecting rod is located in the middle of the battery box installation site, and the pressing block is provided with a pressing portion extending laterally on both sides. The mobility scooter of the present invention can achieve the pressing and limiting of the two battery boxes by using a locking mechanism, which can make the unlocking of the present invention and the removal of the battery box more convenient while ensuring the locking stability.

Preferably, the upper end surface of the battery box is provided with a mating groove which is open upward and extends laterally, and when the battery box is restricted at the battery box installation position under the action of the locking mechanism, the pressing part is located in the mating groove. The pressing part extends into the mating groove for mating, which can prevent the upper end of the battery box from shaking and can further improve the locking and fixing stability of the battery box.

Preferably, the battery box includes two shells arranged opposite to each other, the two shells are assembled to form an inner cavity for accommodating the battery, the two shells are fixed by laterally arranged fasteners, the two shells have mating holes extending laterally and corresponding to each other, and the mating groove is connected to the outer end of the mating hole. The mating groove is not only used for mating with the pressing part, but also for passing fasteners such as bolts, so as to facilitate the assembly of the battery box shell.

Preferably, a handle is provided at the upper end of the battery box. By providing a handle, it is convenient for the user to take out the battery box, and the battery box can be taken and placed more conveniently. Since the turning angle of the connecting rod of the present invention is small when the lock is released, the space under the seat can be larger. Even if a large-volume battery box is used, a handle can be provided at the upper end of the battery box instead of providing a handle protrusion on the side of the battery box, which is more convenient to lift the battery box.

Preferably, the hinge between the connecting rod and the frame deviates from the connecting rod axis. The above arrangement can reduce the angle of rotation required for the connecting rod when unlocking, increase the space available under the seat, and enable the use of a larger battery box.

Preferably, the locking mechanism comprises a first locking mechanism having the connecting rod and a second locking mechanism provided at a limiting portion away from the first locking mechanism, the second locking mechanism having a positioning groove opening to the lower end side of the connecting rod of the first locking mechanism, and the lower end of the battery box having a positioning portion fitted in the positioning groove. The positioning portion extends into the positioning groove, thereby further limiting the movement of the battery box. Only the positioning portion at the lower end of the battery box extends into the positioning groove, and the first locking mechanism is located on the other side, and the battery box only needs to be flipped at a small angle to allow the positioning portion to escape from the positioning groove.

Preferably, the outer edge of the cross section of the positioning portion is C-shaped or U-shaped, so as to have an arc surface in contact with the wall of the positioning groove. The above arrangement can avoid the occurrence of jamming when the battery box is turned around the positioning portion, so as to facilitate the removal of the battery box.

Preferably, the end of the battery box away from the positioning portion has a first contact member extending backward or downward, and a second contact member for cooperating with the first contact member is provided at the second locking mechanism of the battery box installation portion away from the positioning portion. When the battery box is flipped around the positioning portion to contact the supporting surface at the battery box installation portion, the first contact member is electrically connected to the second contact member.

Beneficial Effects

The present invention has the advantages of making it more convenient and labor-saving to take out the battery box, and also has the advantages of making more use of the space under the seat and using a battery box with a larger volume to increase the cruising range.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a battery box installation location of the present invention when there is a battery box.

FIG. 2 is a schematic structural diagram of the battery box installation location of the present invention.

FIG3 is a schematic diagram of the structure of the battery box of the present invention when it is taken out.

FIG. 4 is a schematic diagram of the structure of the battery box of the present invention when it is locked and fixed.

FIG. 5 is a schematic structural diagram of a first locking mechanism of the present invention.

FIG. 6 is a schematic structural diagram of a battery box of the present invention.

Best Mode for Carrying Out the Invention

The present invention will be further described below based on the accompanying drawings and specific embodiments.

As shown in Figures 1, 3 and 6, this embodiment discloses a battery box, the battery box 1 includes two shells arranged opposite to each other on the left and right sides, the two shells are assembled to form an inner cavity for accommodating a battery (not shown in the figure), the two shells are fixed by a fastener 10 arranged laterally, the upper end surface of the shell of the battery box 1 is provided with a matching groove 11 that opens upward and extends in the left and right directions, and the shell of the battery box 1 is also provided with matching holes that extend laterally and correspond to each other, the extension direction of the matching holes is the same as the extension direction of the matching groove 11, and the inner end of the matching groove 11 is connected to the outer end of the matching hole. Among them, a handle 12 is also provided in the middle of the upper end of the battery box 1 of this embodiment, and the handle 12 has a handle groove 13 that runs through the left and right sides.

The battery box 1 has a positioning portion 14 extending in the left-right direction at the lower rear end, and the outer edge of the cross section of the positioning portion 14 is C-shaped with an arc surface 15. The battery box 1 has a battery box plug-in portion 16 at the front end of the lower side, and a first contact member (not shown) electrically connected to the battery and extending downward is provided in the battery box plug-in portion 16.

As shown in FIG. 1 to FIG. 5 , this embodiment discloses a battery box fixing structure for a mobility vehicle, including a vehicle frame, the vehicle frame is provided with a battery box installation part 2, the battery box installation part 2 is provided with a limiter for limiting the movement of the battery box 1 in the horizontal direction, the upper end surface of the battery box installation part 2 is provided with three first limiters 21 extending in the front-to-back direction and two second limiters 22 extending in the left-to-right direction, the three first limiters 21 constitute a structure that divides the battery box installation part 2 into two areas, each area is used for the placement of a battery box 1. Among them, the second limiter 22 is located at the rear edge of the battery box installation part 2, each battery box 1 is equipped with a second limiter 22, the second limiter 22 has a positioning groove 23 that penetrates from left to right and opens forward, the positioning groove 23 is used to cooperate with the positioning part 14 of the battery box 1, and the depth of the positioning groove 23 in the front-to-back direction is greater than the width of the positioning part 14 in the front-to-back direction.

Two frame connectors 24 are provided at the front edge of the battery box installation part 2, and a second contact power-carrying member (not shown in the figure) for cooperating with the first contact power-carrying member is provided in the frame connector 24. When the positioning portion 14 of the battery box 1 extends into the positioning groove 23, and the battery box 1 is flipped at the center of the positioning portion 14 to contact the supporting surface of the battery box installation part 2, the first contact power-carrying member is electrically connected to the second contact power-carrying member.

In this embodiment, a locking mechanism is provided on the front and rear sides of the battery box installation part 2, respectively. A first locking mechanism is provided on the front side, and two second locking mechanisms are provided on the rear side. Among them, the positioning groove 23 of the second limiting part 22 constitutes the second locking mechanism. Among them, the first locking mechanism is located just in front of the middle first limiting part 21.

The first locking mechanism includes a connecting rod 31 located just in front of the middle first limiting portion. The lower end of the connecting rod 31 is hinged and fixed to the frame. The lower end of the connecting rod 31 is provided with a hinge shaft 35 extending in the left and right directions. The hinge shaft 35 is relatively located at the rear side of the connecting rod 31 so that the hinge point between the connecting rod 31 and the frame deviates from the axis of the connecting rod 31.

The connecting rod 31 is sleeved with a clamping block 32, a locking handle 33 and a compression spring 37. The locking handle 33 has an inner hole, and a threaded structure that cooperates with each other is provided between the inner wall of the inner hole of the locking handle 33 and the outer wall of the connecting rod 31. The left and right sides of the clamping block 32 have a clamping portion 34 that extends laterally and is used to limit the upward displacement of the battery box 1. The connecting rod 31 is provided with a limit block 36 for preventing the clamping block 32 from excessively moving downward, and the compression spring is located between the limit block 36 and the clamping block 32. The cross section of the clamping portion 34 is cylindrical.

When the user needs to remove the battery box on the mobility scooter, the user first turns the locking handle, and the pressing block is separated from the battery box upward under the action of the compression spring. Then the locking handle is pushed forward to flip the connecting rod away from the battery box, thereby canceling the limit on the battery box. Then the user holds the handle of the battery box and pulls it forward and upward to remove the battery box.

When the charged battery box needs to be placed on the mobility scooter, the positioning portion of the battery box is inserted into the positioning groove of the second locking mechanism, and then the user lets go, and the battery box flips forward with the center of the positioning portion as the axis, so that the first contact power-carrying member is electrically connected to the second contact power-carrying member; then the locking handle is pulled backward, and when the pressing block is located above the matching groove, the locking handle is turned to press the pressing portion of the pressing block into the matching groove.

Claims

A battery box fixing structure for a mobility scooter, comprising a frame, the frame being provided with a battery box mounting location, the battery box mounting location being provided with a limit portion for limiting the horizontal movement of the battery box, and characterized in that: a locking mechanism is respectively provided on two opposite sides of the battery box mounting location of the frame, at least one locking mechanism comprises a connecting rod, the lower end of the connecting rod is hingedly fixed to the frame, a clamping block and a locking handle are sleeved on the connecting rod, the locking handle has an inner hole, and a threaded structure that cooperates with each other is provided between the inner wall of the inner hole of the locking handle and the outer wall of the connecting rod, the clamping block has a clamping portion that extends laterally and is used to limit the upward displacement of the battery box, and the connecting rod is provided with a limit block for preventing the clamping block from excessively moving downward.
The battery box fixing structure for a mobility scooter according to claim 1 is characterized in that a compression spring is sleeved on the connecting rod, and the compression spring is located between the limiting block and the pressing block.
According to the battery box fixing structure for a mobility scooter according to claim 1 or 2, it is characterized in that: the battery box mounting portion is used for mounting two battery boxes, the connecting rod is located in the middle of the battery box mounting portion, and a clamping portion extending laterally is provided on opposite sides of the clamping block.
According to the battery box fixing structure for a mobility scooter as described in claim 3, it is characterized in that: the upper end surface of the battery box is provided with a mating groove which is open upward and extends laterally, and when the battery box is restricted at the battery box installation position under the action of the locking mechanism, the pressing portion is located in the mating groove.
The battery box fixing structure for a mobility scooter according to claim 4 is characterized in that: the battery box includes two shells arranged opposite to each other, the two shells are assembled to form an inner cavity for accommodating a battery, the two shells are fixed by laterally arranged fasteners, the two shells both have mating holes extending laterally and corresponding to each other, and the mating groove is connected to the outer end of the mating hole.
The battery box fixing structure for a mobility scooter according to claim 4 is characterized in that a handle is provided at the upper end of the battery box.
The battery box fixing structure for a mobility scooter according to claim 1 or 2 is characterized in that the hinge between the connecting rod and the frame deviates from the axis of the connecting rod.
The battery box fixing structure for a mobility scooter according to claim 1 is characterized in that: the locking mechanism includes a first locking mechanism having the connecting rod and a second locking mechanism arranged at a limiting portion away from the first locking mechanism, the second locking mechanism has a positioning groove opening to the lower end side of the connecting rod of the first locking mechanism, and the lower end of the battery box has a positioning portion that fits in the positioning groove.
According to the battery box fixing structure for a mobility scooter as claimed in claim 8, it is characterized in that the outer edge of the cross-section of the positioning portion is C-shaped or U-shaped, so as to have an arc surface in contact with the wall of the positioning groove.
The battery box fixing structure for a mobility scooter according to claim 8 or 9 is characterized in that: one end of the battery box away from the positioning portion has a first contact member extending backward or downward, and a second contact member for cooperating with the first contact member is provided at the second locking mechanism of the battery box installation location away from the positioning portion, and when the battery box is flipped around the positioning portion to contact the supporting surface of the battery box installation location, the first contact member is electrically connected to the second contact member.