WO2008063140A1

WO2008063140A1 - Bicycle with leaf spring

Info

Publication number: WO2008063140A1
Application number: PCT/TR2007/000136
Authority: WO
Inventors: Ismet Demirhan
Original assignee: Ismet Demirhan
Priority date: 2006-11-20
Filing date: 2007-11-19
Publication date: 2008-05-29
Also published as: TR200606482A2

Abstract

Leaf spring (62) system which is designed to be used in the back and front wheels suspensions of the bicycles, which is located between the frame (30) and the fork; which allows adjustment of wheel height and spring hardness when necessary.

Description

BICYCLE WITH LEAF SPRING

Leaf spπng (1, 60, 61, 62, 63, 64, 65, 66) has been designed to be used in the rear and front wheels of the bicycles and it is located on the frame (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43) and fork (44, 45, 46, 47). The height of its wheels and spring hardness can be adjusted when necessary via the screw slot (49) on it.

Bicycle with leaf spπng is unique and it is not matched among the bicycles with dampers. The existing bicycles with damper employ spiral springs and these springs are attached to the frame and rear wheel fork with the help of connection elements. Springing takes place hke a circular line drawing of the rear wheel in a certain angle and the absorber in the middle of the spring receives the bounces. The existing spπng system has many types but the function is the same as described above.

The system consists of spπngs of vanous number, shape, length, thickness, interval and angle which are shaped in such a manner that will provide springing. The leaf spπng may consist of spπngs which are put inside each other (Figures 2, 3, 4, 5, 7, 10, 11, 15, 20) as well as it may be used on its own (Figures 6, 8, 9, 13, 17, 19, 21). However, against the possibility of breaking of a single leaf spring, it is more appropnate to use more than one spring. The springing in the leaf spring system takes place as result of the stretching of the spπngs by the pedestal beaπngs (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24) which are connected two both ends of the spπngs m accordance with the contraction pπnciple of the spπngs and the spπngmg is in the downwards-upwards, front-back and right- left direction due to the characteπstics of the system.

Leaf spring is fixed to the pedestal beaπngs with the screws (50) the spπng hardness and wheel height can be adjusted via the screw slots (49) on the spnng and pedestal bearing. Figure 1 - Leaf spring

Figure 2 - Way of adaptation of the leaf spnng to the bicycle

Figure 3 - Leaf spπng SUBSTITUTE SHEET (RULE 26)

Figure 4 - Way of adaptation of the leaf spπng to the bicycle

Figure 5 - Leaf spring Figure 6 - Way of adaptation of the leaf spnng to the bicycle Figure 7 - Leaf spring

Figure 8 - Way of adaptation of the leaf spnng to the bicycle Figure 9 - Way of adaptation of the leaf spπng to the bicycle Figure 10 - Way of adaptation of the leaf spπng to the bicycle Figure 11 - Absorbing leaf spπng

Figure 12 - Way of adaptation of the absorbing leaf spπng to the bicycle

Figure 13 - Way of adaptation of the leaf spring to the bicycle

Figure 14 - Way of adaptation of the reverse leaf spπng to the bicycle Figure 15 - Way of adaptation of the reverse leaf spπng to the bicycle

Figure 16 - Way of adaptation of the cross leaf spnng to the bicycle

Figure 17 - Way of adaptation of the leaf spπng to the bicycle

Figure 18 - Multiple leaf spπng

Figure 19 - Way of adaptation of the multiple leaf spπng to the bicycle Figure 20 - Leaf spring

Figure 21 - Way of adaptation of the leaf spπng to the fork

Figure 22 - Leaf spπng

Figure 23 - Way of adaptation of the leaf spπng to the fork

Figure 24 - Way of adaptation of the leaf spπng to the bicycle Figure 25 - Way of adaptation of the leaf spπng to the fork

The parts in the figures are numbered and their equivalents are given below.

1- Leaf Spπng

2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 - Pedestal bearing

25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43 -Frame 44, 45, 46, 47 -Fork

48 - Tong pipe

49 - Screw slot

50 - Screw

51 - Absorber 52 - Gas operated absorber

53 - Air operated absorber

54 - Oil operated absorber

55 - Gas operated damper

56 — Air operated damper 57 - Plastic absorber

58 - Thick leaf spπng

59 - Thin leaf spring

60, 61, 62, 63, 64, 65, 66 - Angled spnng 67 - Spring end 68 - Spπng back

69 - Lower link ball

70 - Connection element

71 - Connection element 72 - Connection element

Technical problems

In bicycle with spiral springs, there occurs a gap in the rear wheel caused by bouncing and this affects the riding negatively. Besides the loss of force in the rear wheel caused by the springing is another problem. Technical solution:

In the bicycle with leaf spπng, the connection elements combining the frame and the rear wheel fork is not used, therefore there occurs no gap in the rear wheel caused by springing and more enjoyable ridmg is provided. Besides the loss of force caused by springing is minimized. Advantageous Effects :

Springing takes place in the bicycle with leaf spring 100 %. In another words, since the conncetion elements combining the frame and the rear wheel fork is not used unlike the existing bicycles with spiral springs the schocks caused by hits are received in a better way thus providing maximum enjoyment of riding Leaf spring consists of a mechanism that is located on the frame and fork; that tears the bicycle into parts when dismantled and that is attached to pedestal bearings with the screws. Leaf spring provides ease of assembly, packaging, storage, usage and shipment as well as low cost. The fact that it can be adapted to existing bicycle without a fundamental change is regarded as another advantage of the system.

Claims

1- Leaf spring (1, 60, 61, 62, 63, 64, 65, 66) is a spring that is designed to be used in the back and front wheels of the bicycles; that consists of the pedestal bearings (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 17, 19, 20, 21, 22, 23, 24) to which this spring is connected; that dismantles the bicycle when removed; that has screw slots (49) on it which allow adjustment of spring hardness and wheel height; that has an absorber (51) on it in different installations which prevents bouncing of the wheel; that also consists of plastic type absorber (57) which prevents crashing of the springs; that has spring ends (67) or back (68) which can be installed to the bicycle upward-downward (Figure 12), cross (Figure 16) or horizontal (Figures 9, 13, 24); that can be used with or without gas operated absorber, air operated absorber (55, 56) and gas operated damper, air operated damper, oil operated damper (52, 53, 54) or yaym damper (Figure 2); that is attached to the pedestal bearings in different ways; that has various size (I), shape, thickness (58, 59), angle ( 60, 61, 62, 63, 64, 65, 66) and parts (Figure 18); that can be used within each other (Figures 8, 10, 15, 19), on top of each other (Figures 2, 9, 13, 16, 24) or in single piece (Figures 4, 6, 12, 14, 17, 21, 23, 25); that is attached to the p, pedestal bearings (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24) on the frame (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43) and fork (44, 45, 46, 47); and that consists of screw slots (49) on it.

2- It is the leaf spring bicycle described in claim 1 and characterized with that the bicycle contains the frame (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43) and the fork (44, 45, 46, 47) where the spring is fixed.

3- It is the frame and fork described in claim 1 and characterized with that they contain pedestal bearings (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24).

4- It is the pedestal bearings described in claim one and characterized with that the pedestal bearings consist of screw slots (49) on them

5- It is the leaf spring described in claim 1 and characterized with that it contains gas operated and air operated dampers (55, 56).

6- It is the leaf spring described in claim 1 and characterized with that it contains air operated, gas operated, oil operated absorbers (51, 52, 53, 54) which absorbs bounces caused by the spring. 7- It is the absorbers described in claim 1 and characterized with that they contain a lower link ball (69) that receives contractions.

8- It is the leaf spring bicycle described in claim 1 and characterized with that it consists of leaf springs of different size (1), thickness (58, 59), angle (60, 61, 62, 63, 64, 65, 66).