WHEEL SYSTEM FOR THE PRECISION TRANSPORT VEHICLES

Abstract

A shock absorber wheel system for absorbing vibrations and impacts on precision transport and the translocation vehicles like patient stretchers, new born baby units, portable medical devices in the health sector has a track wheel, a compressive spiral spring absorbing the vibrations and the impacts, an upper spring holder which is connected to the spiral spring and has a spindle at one end and a centering housing at the other end, a lower spring holder which is connected to the spiral spring and has a housing providing connection to the track wheel at one end and has a centering spindle connected to said centering housing.

Claims

1. A shock absorber wheel system comprising a track wheel and absorbing the vibrations and the impacts on the precision transport and the translocation vehicles like patient stretchers, new born baby units, portable medical devices in health sector characterized in comprising: a compressive spiral spring absorbing the vibrations and the impacts; an upper spring holder which is connected to said spiral spring and has a spindle at one end and a centering housing at the other end; and; a lower spring holder which is connected to said spiral spring and has a housing providing connection to the track wheel at one end and has a centering spindle connected to said centering housing.

2. The shock absorber wheel system according to claim 1, characterized in comprising; an upper protection cover surrounding the spiral spring; and a lower protection cover surrounding the spiral spring which has a diameter that is able to introduces into the upper protection cover.

3. The shock absorber wheel system according to claim 1, characterized in comprising a connection unit which provides the connection between said track wheel and the transport vehicle via the spindle on the upper spring holder.

4. The shock absorber wheel system according to claim 3, characterized in comprising a connection back up unit which is compressed under the connection unit and prevents loosening.

5. The shock absorber wheel system according to claim 1, characterized in that; said spiral spring has threaded screw function at both ends.

6. The shock absorber wheel system according to claim 5, characterized in that the upper spring holder having the threaded outer surface that provides screwed connection to the mentioned spiral spring.

7. The shock absorber wheel system according to claim 5, characterized in that the lower spring holder having has the threaded outer surface that provides screwed connection to the mentioned spiral spring.

8. The shock absorber wheel system according to claim 2, characterized in comprising a protection cover retainer ring which fixes the upper protection cover and the mentioned lower protection cover to the inner parts.

9. The shock absorber wheel system according to claim 2, characterized in that the upper protection cover and the lower protection cover are made of sheet material.

10. The shock absorber wheel system according to claim 1, characterized in that the spring is able to stretch maximum in 3 cm length when the load in 5-75 kg is applied.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0019] FIG. 1 is the front view of the mounted wheel system for the precision transport vehicles according to the invention.

[0020] FIG. 2 is the cross-sectional view of the mounted wheel system for the precision transport vehicles according to the invention.

[0021] FIG. 3 is the front view of the disassembled wheel system for the precision transport vehicles according to the invention.

[0022] FIG. 4 is the front view of the upper spring holder in the wheel system for the precision transport vehicles according to the invention.

[0023] FIG. 5 is the top view of the upper spring holder in the wheel system for the precision transport vehicles according to the invention.

[0024] FIG. 6 is the cross-sectional front view of the upper spring holder in the wheel system for the precision transport vehicles according to the invention.

[0025] FIG. 7 is the front view of the lower spring holder in the wheel system for the precision transport vehicles according to the invention.

[0026] FIG. 8 is the top view of the lower spring holder in the wheel system for the precision transport vehicles according to the invention.

[0027] FIG. 9 is the cross-sectional front view of the lower spring holder in the wheel system for the precision transport vehicles according to the invention.

[0028] FIG. 10 is the front view of the upper protection cover in the wheel system for the precision transport vehicles according to the invention.

[0029] FIG. 11 is the top view of the upper protection cover in the wheel system for the precision transport vehicles according to the invention.

[0030] FIG. 12 is the front view of the lower protection cover in the wheel system for the precision transport vehicles according to the invention.

[0031] FIG. 13 is the top view of the lower protection cover in the wheel system for the precision transport vehicles according to the invention.

REFERENCE NUMBERS

[0032] 100. Wheel System

[0033] 10. Spiral Spring

[0034] 20. Upper Spring Holder

[0035] 21. Centering Housing

[0036] 22. Spindle

[0037] 30. Lower Spring Holder

[0038] 31. Centering Spindle

[0039] 32. Housing

[0040] 40. Upper Protection Cover

[0041] 50. Lower Protection Cover

[0042] 60. Protection Cover Retainer Ring

[0043] 70. Connection Unit

[0044] 80. Connection Back up unit

[0045] 90. Track Wheel

DETAILED EXPLANATION OF THE INVENTION

[0046] The detailed explanation clarifies the preferred embodiment of the wheel system (100) according to the invention, in the way of more comprehensible and eliminating the restrictive effects.

[0047] FIG. 1 shows the front view of the mounted wheel system for the precision transport vehicles (100) according to the invention. The invention is related with the shock absorber wheel system (100) absorbing the vibrations and the impacts on the precision transport and the translocation vehicles like patient stretchers, new born baby units, portable medical devices in health sector.

[0048] FIG. 2 shows the cross-sectional view of the mounted wheel system (100) for the precision transport vehicles according to the invention. As seen in the figure, the shock absorber wheel system (100) comprises: [0049] a spiral spring (10), compressive spring, which is grinded and has threaded screw function at both ends, [0050] an upper spring holder (20) providing screw connection to the spiral spring (10) via threaded outer surface, with a spindle (22) at one end and a centering housing (21) at the other end, [0051] a lower spring holder (30) providing screw connection to the spiral spring (10) via threaded outer surface, with a threaded structured housing (32) at one end and a centering spindle (31) at the other end, [0052] an upper protection cover (40) surrounding the spiral spring (10) and produced by the sheet material, [0053] a lower protection cover (50) surrounding the spiral spring (10) which is produced by the sheet material and which has a diameter that is able to introduces into the upper protection cover (40), [0054] a protection cover retainer ring (60) which is a connection part fixing the upper protection cover (40) and the lower protection cover (50) to the inner parts, [0055] a connection unit (70) connecting the shock absorber wheel (100) to the transport vehicle casing, [0056] a connection back up unit (80) which is replaced under the connection unit (70) and compressed to prevent the loosening, [0057] a track wheel (90) that provides the movement of the transport vehicle.

[0058] FIG. 3 is the front view of the disassembled wheel system (100) for the precision transport vehicles according to the invention. The connection of the equipments of the wheel system (100) is as follows:

[0059] The wheel system (100) is connected to the transport vehicle by the spindle (22) on the upper spring holder (20) through the connection unit (70). The connection unit (70) is preferably a mountage nut. In order to prevent the loosening, a connection back up unit (80) is placed between the connection unit (70) and upper spring holder (20) and spindle (22). The connection back up unit (80) is preferably is a lock washer.

[0060] The spiral spring (10) is a grinded compression spring and designed to absorb the vibrations and the impacts in the wheel system (100). The space between the spirals on the spiral spring (10) is narrowed at both ends to brought into a screw function. Thereby it is provided to be screwed on the surface of the upper spring holder (20) and the lower spring holder (30). The spiral spring (10) is designed to stretch up to 3 cm in case of the load of minimum 5 kg and maximum 75 kg is applied on. By means of screwing the spiral spring (10) to the upper spring holder (20) and the lower spring holder (30), it is provided for the spiral spring (10) to be in the same axis with the spring holders (20,30). Hence the system is provided to exist in a small dimension and simple structure.

[0061] There is a centering spindle (31) on the lower spring holder (30) and a centering housing (21) on the upper spring holder (20). By introducing the centering spindle (31) on the lower spring holder (30) into the centering housing (21) on the upper spring holder (20), spring (10) axis is immobilised and bending is prevented. FIGS. 4,5 and 6 shows the different point of view of the upper spring holder (20) in the wheel system (100) for the precision transport vehicles according to the invention.

[0062] FIGS. 7, 8 and 9 shows the different point of view of the lower spring holder (30) in the wheel system (100) for the precision transport vehicles according to the invention. The lower spring holder (30) has a threaded housing (32) at the lower surface thereof. The screw connection part on the track wheel (90) is fixed on the threaded housing (32) on the lower spring holder (30). So the spindle axis of the track wheel (90) is in the equiaxial structure with the axis of the spiral spring (10) and the spring holders (20, 30). Due to equiaxial structure, it is provided for the shock absorber wheel system (100) to be mounted on the existing standard wheel (90) vehicles without any necessity of any additional connection part.

[0063] FIGS. 10-13 shows the front and top view of the upper protection cover (40) and the lower protection cover (50) in the wheel system (100) for the precision transport vehicles according to the invention. The spiral spring (10) structure is covered by the upper protection cover (40) and the lower protection cover (50). Said upper protection cover (40) and the lower protection cover (50) are fixed to the inner parts, upper spring holder (20) and lower spring holder (30), by the help of protection cover retainer ring (60). The diameter of the lower protection cover (50) is less than the diameter of the upper protection cover (40); so these covers (40,50) are able to interlock each other. By this feature, the length of the system shrinks and extends during the stretching of the spiral spring (10). In one of the preferred embodiment of the invention, said protection covers (40, 50) are made of sheet material. By means of the covers (40, 50), also the hygiene of the wheel system (100) is maintained and the sticking of the outside objects on the spiral spring (10) is prohibited.