CN114559779A

CN114559779A - Adjustable suspension device

Info

Publication number: CN114559779A
Application number: CN202110740509.XA
Authority: CN
Inventors: 张俊盛; 林祐廷; 陈泰昌
Original assignee: Metal Industries Research and Development Centre
Current assignee: Metal Industries Research and Development Centre
Priority date: 2020-11-27
Filing date: 2021-06-30
Publication date: 2022-05-31
Also published as: TWI749913B; TW202220861A

Abstract

An adjustable suspension device comprises a frame unit and a suspension unit arranged on the frame unit. The frame unit comprises a lower frame and two upper frames which are arranged above the wheels and the lower frame at intervals and respectively define a suspension position. The suspension unit comprises two suspension arms which are connected with the lower frame at intervals and are respectively pivoted with the left wheel and the right wheel, and two shock absorption components which are respectively arranged on the suspension arms. Each shock-absorbing assembly is provided with a second adjusting part which is detachably arranged at the suspension position. The shock absorption components can be adjusted to swing back and forth relative to the suspension arms respectively, and suspension hard points between the shock absorption components and the frame unit are changed accordingly, so that the shock absorption components can be applied to different load requirements.

Description

Adjustable suspension device

Technical Field

The present invention relates to a suspension device, and more particularly, to an adjustable suspension device.

Background

In recent years, demand for short-range movement such as delivery, riding instead of walking for the elderly, etc. in cities has been increasing, and among them, micro electric vehicles are favored by commuters around the world and have become a big business opportunity, so that many car factories have started to produce micro four-wheel electric vehicles. Referring to fig. 1, a conventional suspension device 5 includes wheels 51, a trailing arm 52 connected to the wheels 51, a shock absorber 53 disposed on the trailing arm 52, and a spring 54 disposed on the trailing arm 52 and spaced apart from the shock absorber 53.

However, in order to meet the environmental requirements, the electric vehicle must be made lighter to reduce energy consumption, but most of the manufacturers use the suspension device 5 of the gasoline vehicle as shown in fig. 1, which causes the problems of the easy deflection of the wheel 51, the complicated structure of the towing arm 52, the large space occupied by the shock absorber 53 and the spring 54, and the difficulty in adjustment, and is not favorable for the operation of the micro electric vehicle. In addition, the user of the micro electric vehicle may have different suspension hard point requirements, such as high load requirements for home delivery and micro transportation, or low load requirements for single person driving, commuting, etc., so that the vehicle manufacturer must develop different suspension structures according to different requirements, resulting in increased cost, and thus the above-mentioned disadvantages need to be improved.

Disclosure of Invention

The invention aims to provide an adjustable suspension device which can be adjusted according to different requirements.

The invention discloses an adjustable suspension device which is suitable for being arranged on a mobile carrier with a rear wheel and comprises a frame unit and a suspension unit arranged on the frame unit. The frame unit comprises a lower frame and two upper frames, wherein the lower frame is suitable for being arranged in front of the rear wheels, the two upper frames are spaced from each other and are respectively suitable for being arranged above the rear wheels and the lower frame, and each upper frame is provided with a first adjusting part which defines at least two suspension positions. The suspension unit comprises two suspension arms which are connected with the lower frame at intervals and are respectively suitable for being connected with the rear wheel, and two shock absorption components which are respectively connected with the suspension arms, each shock absorption component is provided with a second adjusting part which can be detachably arranged at any suspension position, wherein the shock absorption components can be respectively adjusted to swing back and forth relative to the suspension arms.

The purpose of the invention and the technical problem to be solved can be further realized by adopting the following technical measures.

Preferably, the adjustable suspension device further comprises an anti-tilting unit fixed to the frame unit and the suspension arm, the anti-tilting unit includes a fixing member fixed to the frame unit, two adjusting members spaced apart from each other and connected to the fixing member and extending forward and backward, and two engaging members detachably connected to the adjusting members and fixed to the suspension arm, respectively.

Preferably, in the adjustable suspension device, each adjusting member forms a plurality of positioning holes arranged at intervals, and each engaging member is inserted into one of the positioning holes of the corresponding adjusting member.

Preferably, in the adjustable suspension device, each suspension arm has a first rod portion disposed on the lower frame and adapted to connect the corresponding rear wheel and the second adjusting portion, and a second rod portion having a curved shape and two ends disposed on the first rod portion.

Preferably, in the adjustable suspension device, the first rod portion and the second rod portion are both hollow tubes.

Preferably, in the adjustable suspension device, each engaging member is fixedly disposed on the second rod portion of the corresponding suspension arm.

Preferably, the frame unit further includes an extension frame adapted to be disposed behind the rear wheel, the fixing member extends in the left-right direction of the mobile carrier and is a long rod fixed on the extension frame, and two ends of the fixing member are respectively connected to the adjusting members, and each of the adjusting members extends in a direction toward the lower frame.

Preferably, in the adjustable suspension device, each upper frame is in a flat plate shape, each shock absorbing assembly further has a body portion extending from the second adjusting portion to be in a column shape, and connecting to the corresponding suspension arm and being capable of damping vibration, a connection portion passing through the body portion and the corresponding suspension arm is defined, and a reference line perpendicular to the corresponding upper frame, and an included angle between an extending axis of each body portion and the corresponding reference line is 0 to 10 degrees.

Preferably, in the adjustable suspension device, each shock absorbing assembly further has a spring sleeved on the periphery of the body.

Preferably, in the adjustable suspension device, each of the first adjusting portions forms a through groove extending in the front-rear direction and passing through the suspension position, and the suspension unit further includes two locking pieces respectively disposed on the second adjusting portions and used for adjusting and fixing the second adjusting portions to the first adjusting portions respectively.

The invention has the beneficial effects that: the second adjusting part is detachably arranged at different suspension positions and is used for changing the inclination angle of the shock absorption assembly relative to the frame units, so that suspension hard points with different sizes are generated to correspond to different load requirements, the high-adaptability effect is further achieved, the same type of mobile carrier can be directly adjusted in a garage according to different suspension requirements, additional production of new suspension device assembly is not needed, the operation is simple, and the cost can be reduced.

Drawings

FIG. 1 is a fragmentary perspective view illustrating a prior art suspension;

FIG. 2 is a fragmentary perspective view illustrating an embodiment of the adjustable suspension of the present invention disposed on a rear wheel;

fig. 3 is a fragmentary rear view illustrating the suspension unit of the embodiment;

fig. 4 is a fragmentary top plan view illustrating the suspension arms of the suspension unit;

FIG. 5 is a fragmentary perspective view illustrating the anti-tilt unit of the embodiment;

fig. 6 is a fragmentary perspective view illustrating an adjustment member of the anti-tilting unit,

and a joining member;

fig. 7 is a schematic view illustrating a case where a second adjusting portion of the suspension unit changes position; and

fig. 8 to 10 are fragmentary side views each illustrating a state in which the suspension unit is inclined.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 2 to 4, an embodiment of the adjustable suspension device of the present invention is adapted to be disposed on a mobile carrier. The mobile carrier is a micro electric vehicle, but not limited thereto. The mobile carrier comprises two rear wheels 11 arranged at intervals, wherein the rear wheel 11 positioned on the right side in fig. 2 is omitted for avoiding shielding the embodiment, and therefore, part of the structure is omitted. The embodiment includes a frame unit 2, a suspension unit 3 disposed on the frame unit 2, and an anti-lean unit 4 disposed between the frame unit 2 and the suspension unit 3.

The frame unit 2 includes a lower frame 21 adapted to be disposed in front of the rear wheel 11, two upper frames 22 spaced apart from each other and adapted to be disposed above the rear wheel 11 and the lower frame 21, respectively, and an extension frame 23 connecting the upper frames 22 and adapted to be disposed behind the rear wheel 11. Each of the upper frames 22 has a first adjusting portion 221 having a generally flat plate shape and defining at least two suspension positions. In the present embodiment, each of the first adjusting portions 221 forms a through groove 220 extending in the front-rear direction and passing through the suspension position. In addition, in other embodiments, each of the first adjusting portions 221 may form a plurality of through holes respectively located at the suspension positions and spaced apart from each other, and the number of the through holes may be adjusted according to requirements.

The suspension unit 3 includes two suspension arms 31 connected to the lower frame 21 at intervals and adapted to be connected to the rear wheels 11, two suspension assemblies 32 respectively disposed between the suspension arms 31 and the upper frame 22, and two locking members 33 respectively disposed on the suspension assemblies 32. Each suspension arm 31 has a first rod portion 311 which is curved and connects the lower frame 21 and the corresponding rear wheel 11, and a second rod portion 312 which is curved and has two ends disposed on the first rod portion 311 and is used for improving the structural strength of the first rod portion 311. The first rod portion 311 and the second rod portion 312 are preferably hollow tubes, so that the weight can be reduced. Each suspension assembly 32 has a body 321 which is cylindrical and connected to the corresponding first rod 311 of the suspension arm 31, a second adjusting part 322 which extends from one end of the body 321 and is detachably disposed at any suspension position, and a spring 323 which is sleeved on the periphery of the body 321. In this embodiment, the body 321 has an effect of reducing vibration of the vehicle body, and the second adjusting portion 322 is disposed through the corresponding first adjusting portion 221 and can move relative to the first adjusting portion 221 in the through groove 220. Each locking member 33 is disposed on the corresponding second adjusting portion 322, can move along with the second adjusting portion 322, and can be adjusted to fix the corresponding second adjusting portion 322 on the corresponding first adjusting portion 221.

Referring to fig. 5 and 6 in conjunction with fig. 4, fig. 5 is a partially enlarged view of fig. 2. The anti-tilting unit 4 is fixedly disposed on the frame unit 2 and the suspension arm 31, and includes a long rod extending in the left-right direction, a fixing member 41 fixed to the extension frame 23, two adjusting members 42 spaced apart from each other and respectively fixed to two ends of the fixing member 41 and located between the rear wheels 11, and two engaging members 43 respectively detachably connected to the adjusting members 42 and fixed to the suspension arm 31 (only one engaging member is shown in fig. 5 and 6 for the angle shown in the drawing). Each adjusting member 42 extends from the fixing member 41 toward the lower frame 21 and forms a plurality of positioning holes 420 arranged at intervals. Each engaging member 43 is fixedly disposed on the second rod portion 312 of the suspension arm 31 and detachably disposed through one of the positioning holes 420 of the adjusting member 42, so that each suspension arm 31 is positioned on the anti-tilt unit 4, thereby preventing the rear wheel 11 from being tilted due to a force during driving. It should be noted that each of the engaging members 43 is disposed through a different positioning hole 420, so as to change the position between the suspension arm 31 and the adjusting member 42, thereby generating different positioning effects to meet different requirements.

It should be noted that, referring to fig. 7 and 8 in conjunction with fig. 3, two connecting points passing through the body 321 and the suspension arm 31 respectively are defined and are perpendicular to the reference line L1 of the upper frame 22 respectively. Due to the mechanism that one end of the body portion 321 of each suspension assembly 32 is positioned on the corresponding suspension arm 31, and the second adjusting portion 322 can move back and forth in the corresponding through slot 220, the suspension assembly 32 can swing back and forth relative to the suspension arm 31, and is locked and positioned on the upper frame 22 by the locking member 33. Referring to fig. 9 and 10 in conjunction with fig. 8, each suspension assembly 32 can adjust the inclination angle with respect to the reference line L1 according to different load requirements, in the embodiment, an included angle θ formed between an extending axis L2 of each body 321 and the corresponding reference line L1 is 0 to 10 degrees, thereby generating different suspension hard points. For example, when each suspension assembly 32 is located at the position shown in fig. 9, the extending axis L2 is inclined toward the lower frame 21, and the included angle θ is 10 degrees, at this time, the suspension stiffness is high to meet the requirement of high load capacity, so that the embodiment can be applied to transportation, freight delivery, rescue, etc.; when each suspension assembly 32 is located at the position shown in fig. 10, the extending axis L2 is inclined toward the extending frame 23, and the included angle θ is 10 degrees, so that the suspension hard point is low and the suspension can be matched with a single person with low load requirement for driving; when each suspension assembly 32 is in the position shown in FIG. 8, the extension axis L2 is located on the reference line L1 to create a relatively moderate suspension stiffness point for use in urban docking, shared traffic, etc. Therefore, in the present embodiment, when the suspension device is assembled in a car factory, the relative position between each suspension assembly 32 and the frame unit 2 can be adjusted according to different load requirements and operating conditions, and then the corresponding locking member 33 is locked by an assembler to complete positioning, that is, through the mechanism for adjusting the suspension hard points in the present embodiment, even for different operating conditions, the car factory can still elastically adjust the setting of the suspension unit 3 in the same type of mobile carrier, so as to achieve the effect of high adaptability, and the adjustment step is simple, and no additional production line is required to manufacture the suspension devices with different suspension hard points, thereby saving a large amount of production cost.

It should be noted that, referring back to fig. 3 and 4, the suspension arms 31 are disposed independently of each other, and have a simpler structure and occupy less space of the vehicle body, so as to meet the requirements of the micro electric vehicle. The design that each spring 323 is sleeved on the body part 321 not only can reduce the occupied space of the vehicle body, but also can swing together with the body part 321, and has the effect of offsetting weight loads at different suspension hard points. In addition, referring to fig. 5 and 6 again, since the anti-tilting unit 4 can be used to fix the relative position of the suspension arm 31, the rear wheel 11 can be prevented from being tilted during driving, and the contact area of the rear wheel 11 during over-bending can be increased, thereby increasing the grip and safety.

Claims

1. An adjustable suspension device is suitable for being arranged on a mobile carrier with a rear wheel; the method is characterized in that: the adjustable suspension device comprises

A frame unit including a lower frame adapted to be disposed in front of the rear wheel, and two upper frames spaced apart from each other and respectively adapted to be disposed above the rear wheel and the lower frame, each upper frame having a first adjusting portion defining at least two suspension positions; and

and the suspension unit comprises two suspension arms which are connected with the lower frame at intervals and are respectively suitable for being connected with the rear wheel, and two shock absorption components which are respectively connected with the suspension arms, each shock absorption component is provided with a second adjusting part which can be detachably arranged at any suspension position, and the shock absorption components can be respectively adjusted to swing back and forth relative to the suspension arms.

2. The adjustable suspension device according to claim 1 wherein: the adjustable suspension device also comprises an anti-tilting unit fixedly arranged on the frame unit and the suspension arm, wherein the anti-tilting unit comprises a fixing piece fixed on the frame unit, two adjusting pieces which are mutually spaced and connected with the fixing piece and extend forwards and backwards, and two connecting pieces which are respectively detachably connected with the adjusting pieces and fixed on the suspension arm.

3. The adjustable suspension device according to claim 2 wherein: each adjusting piece is provided with a plurality of positioning holes which are arranged at intervals, and each joint piece penetrates through one of the positioning holes of the corresponding adjusting piece.

4. The adjustable suspension device according to claim 2 wherein: each suspension arm is provided with a first rod part which is arranged on the lower frame and is suitable for connecting the corresponding rear wheel and the second adjusting part, and a second rod part which is bent and two ends of which are arranged on the first rod part.

5. The adjustable suspension device according to claim 4, wherein: the first rod part and the second rod part are both hollow pipe bodies.

6. The adjustable suspension device according to claim 4 wherein: each joint is fixedly arranged on the second rod part of the corresponding suspension arm.

7. The adjustable suspension device according to claim 2 wherein: the frame unit further comprises an extension frame which is suitable for being arranged behind the rear wheels, the fixing piece extends along the left and right directions of the moving carrier to form a long rod and is fixed on the extension frame, two ends of the fixing piece are respectively connected with the adjusting pieces, and each adjusting piece extends towards the direction of the lower frame.

8. The adjustable suspension device according to claim 1 wherein: each upper frame is in a flat plate shape, each shock absorption assembly is also provided with a body part which is extended by the second adjusting part to be in a column shape, is connected with the corresponding suspension arm and can reduce the shock, a connecting part passing through the body part and the corresponding suspension arm is defined, a reference line which is perpendicular to the corresponding upper frame is defined, and the included angle between the extension axis of each body part and the corresponding reference line is 0-10 degrees.

9. The adjustable suspension device according to claim 8 wherein: each shock absorbing assembly is also provided with a spring sleeved on the periphery of the body part.

10. The adjustable suspension device according to claim 1 wherein: each first adjusting part forms a through groove which extends forwards and backwards and passes through the suspension position, and the suspension unit further comprises two locking pieces which are respectively arranged on the second adjusting parts and are used for adjusting and fixing the second adjusting parts on the first adjusting parts respectively.