Wheel mechanism

Abstract

The invention discloses a wheel mechanism. The wheel mechanism comprises a fixed seat, a wheel seat, a wheel, a fixed pipe and a gasket, the gaskets are arranged around the fixing pipe to prevent the wheels from moving up and down, so that the effect of preventing the wheels from shaking is achieved. In one embodiment, the lower gasket can be arranged between the wheel seat and the fixed pipe so as to prevent noise caused by collision between the wheel seat and the fixed pipe.

Description

[0001] This application is a divisional application of the following original application: the original application was filed on January 25, 2021, the original application number is 202110099978.8, and the invention title of the original application is Wheel Mechanism. Technical Field

[0002] This invention relates to a wheel mechanism, and more particularly to a wheel mechanism that can prevent wheel vibration. Background Technology

[0003] Strollers are tools used by parents to carry their babies or children when shopping or strolling. Currently, existing strollers cause the wheels to move up and down while in motion, resulting in vibration. This vibration can cause the wheels to rotate unevenly. In addition, the upper and lower components may collide with each other due to vibration, generating noise and reducing the comfort of using the stroller. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wheel mechanism that can prevent wheel vibration in order to overcome the shortcomings of the prior art and solve the above-mentioned problem.

[0005] The wheel mechanism of the present invention adopts the following technical solution:

[0006] The wheel mechanism includes a fixed seat, a wheel seat, a wheel, a fixed tube, and an upper washer. The wheel is pivotally connected to the wheel seat. The fixed tube pivotally connects the wheel seat to the fixed seat. The upper washer is disposed between the fixed seat and the wheel seat.

[0007] Preferably, the upper washer is fitted onto the fixed tube.

[0008] Preferably, the wheel mechanism also includes a washer disposed between the wheel seat and the fixed tube.

[0009] Preferably, the lower washer is located on the lower edge of the fixing tube.

[0010] Preferably, the fixed base has a fixed hole, the wheel seat has a through hole, and one end of the fixed tube passes through the through hole and is fixed in the fixed hole, so that the fixed tube pivotally connects the wheel seat to the fixed base.

[0011] The wheel mechanism of the present invention adopts the following technical solution:

[0012] The wheel mechanism includes a fixed seat, a wheel seat, a wheel, a fixed tube, and a lower washer. The wheel is pivotally connected to the wheel seat. The fixed tube pivotally connects the wheel seat to the fixed seat. The lower washer is disposed between the wheel seat and the fixed tube.

[0013] Preferably, the lower washer is located on the lower edge of the fixing tube.

[0014] Preferably, the wheel mechanism also includes an upper washer disposed between the fixed seat and the wheel seat.

[0015] Preferably, the upper washer is fitted onto the middle section of the fixed tube.

[0016] Preferably, the fixed base has a fixed hole, the wheel seat has a through hole, and one end of the fixed tube passes through the through hole and is fixed in the fixed hole, so that the fixed tube pivotally connects the wheel seat to the fixed base.

[0017] Preferably, the fixing tube is fixed in the fixing seat, the fixing tube has a through hole, and the wheel seat has a rotating shaft, which is rotatably disposed in the through hole, so that the fixing tube pivotally connects the wheel seat to the fixing seat.

[0018] Preferably, the top of the rotating shaft abuts against the fixed tube.

[0019] Preferably, the wheel seat has a directional turntable fixed to the shaft. The lower washer is disposed on the directional turntable.

[0020] The wheel mechanism of the present invention adopts the following technical solution:

[0021] The wheel mechanism includes a fixed base, a wheel seat, a wheel, a fixed tube, a lower washer, and a limiting pin. The wheel is pivotally connected to the wheel seat. The fixed tube pivotally connects the wheel seat to the fixed base. The lower washer is disposed between the wheel seat and the fixed tube. The fixed tube is fixed in the fixed base and has a through hole. The wheel seat has a rotating shaft, which is rotatably disposed in the through hole, so that the fixed tube pivotally connects the wheel seat to the fixed base. The limiting pin is inserted from the side of the fixed base into the fixed base and the fixed tube, and abuts against the rotating shaft, so that the rotating shaft is limited to the through hole.

[0022] Preferably, the limiting pin abuts against a limiting groove on the rotating shaft.

[0023] Preferably, the wheel seat has a directional turntable fixed to the shaft. The lower washer is disposed on the directional turntable.

[0024] Preferably, the shaft has a step for welding and positioning with the orientation turntable to determine the length of the shaft exposed from the orientation turntable.

[0025] Preferably, the lower washers abut against the lower edges of the directional turntable and the fixed tube, respectively.

[0026] Preferably, the top of the rotating shaft abuts against the fixed tube.

[0027] Ideally, the lower washer should be interference-fitted with the shaft.

[0028] Preferably, the lower washer is interference-fitted with the lower edge of the fixing tube.

[0029] Preferably, the lower gasket is made of ethylene-vinyl acetate copolymer or rubber.

[0030] Ideally, there should be lubricating oil around the lower washer.

[0031] Therefore, according to the above technical solution, the wheel mechanism of the present invention has at least the following advantages and beneficial effects: The present invention provides washers around the fixed tube to prevent the wheel and wheel seat from moving up and down, thereby achieving the effect of preventing wheel vibration. In one embodiment, the upper washer can be placed between the fixed seat and the wheel seat to prevent the fixed seat from colliding with the wheel seat and generating noise. In another embodiment, the lower washer can be placed between the wheel seat and the fixed tube to prevent the wheel seat from colliding with the fixed tube and generating noise. Of course, the present invention can also provide both upper and lower washers around the fixed tube simultaneously to improve the effect of preventing wheel vibration. Attached Figure Description

[0032] Figure 1 This is a perspective view of a wheel mechanism according to an embodiment of the present invention.

[0033] Figure 2 yes Figure 1 Exploded view of the wheel mechanism in the image.

[0034] Figure 3 yes Figure 1 A cross-sectional view of the wheel mechanism in the image.

[0035] Figure 4 This is a cross-sectional view of a wheel mechanism according to another embodiment of the present invention.

[0036] Figure 5 This is a cross-sectional view of a wheel mechanism according to another embodiment of the present invention.

[0037] Figure 6 This is a perspective view of a wheel mechanism according to another embodiment of the present invention.

[0038] Figure 7 yes Figure 6 Exploded view of the wheel mechanism in the image.

[0039] Figure 8 yes Figure 7 A 3D view of the rotating shaft in the diagram.

[0040] Figure 9 yes Figure 6 A partial cross-sectional view of the wheel mechanism in the image.

[0041] The reference numerals in the attached figures are explained as follows:

[0042] 1, 1', 1”, 3 wheel mechanism

[0043] 10, 30 Fixtures

[0044] 12 and 32 wheel seats

[0045] 14, 34 wheels

[0046] 16, 36 fixed tubes

[0047] 18. Upper washer

[0048] 20, 40 lower washers

[0049] 42 Limit pins

[0050] 100 fixing holes

[0051] 102 inner wall

[0052] 120° and 360° through holes

[0053] 122 Top surface

[0054] 124 Bottom

[0055] 160, 361 Lower edge

[0056] 320 swivel

[0057] 322 Limiting groove

[0058] 324 directional turntable

[0059] 326 steps Detailed Implementation

[0060] Please refer to Figures 1 to 3 , Figure 1 This is a perspective view of a wheel mechanism 1 according to an embodiment of the present invention. Figure 2 yes Figure 1 Exploded view of wheel mechanism 1 in the diagram. Figure 3 yes Figure 1 A cross-sectional view of wheel mechanism 1 in the figure.

[0061] like Figures 1 to 3 As shown, the wheel mechanism 1 of the present invention includes a fixed base 10, a wheel seat 12, a wheel 14, a fixing tube 16, and an upper washer 18. The wheel 14 is pivotally connected to the wheel seat 12, allowing the wheel 14 to rotate. In this embodiment, two wheels 14 are respectively pivotally connected to opposite sides of the wheel seat 12. The fixing tube 16 pivotally connects the wheel seat 12 to the fixed base 10. In this embodiment, the fixed base 10 has a fixing hole 100, and the wheel seat 12 has a through hole 120. One end of the fixing tube 16 passes through the through hole 120 of the wheel seat 12 and is fixed in the fixing hole 100 of the fixed base 10, so that the fixing tube 16 pivotally connects the wheel seat 12 to the fixed base 10. Thus, the wheel seat 12, together with the wheel 14, can rotate around the fixed base 10.

[0062] like Figure 3As shown, in this embodiment, the upper washer 18 can be fitted onto the fixing tube 16, either at any point between the two ends of the fixing tube 16, such as the middle section of the fixing tube 16 or one-third of the way from either end of the fixing tube 16. Therefore, after the wheel mechanism 1 is assembled, the upper washer 18 is positioned between the fixing seat 10 and the wheel seat 12. The upper washer 18 abuts against the inner wall surface 102 of the fixing seat 10 and the top surface 122 of the wheel seat 12 to prevent the wheel 14 and wheel seat 12 from moving up and down, thereby preventing the wheel 14 from shaking. In addition, placing the upper washer 18 between the fixing seat 10 and the wheel seat 12 can also prevent the inner wall surface 102 of the fixing seat 10 from colliding with the top surface 122 of the wheel seat 12 and generating noise. In this embodiment, the material of the upper washer 18 can be ethylene-vinyl acetate copolymer (EVA), rubber, or other soft materials, depending on the actual application.

[0063] Please refer to Figure 4 , Figure 4 This is a cross-sectional view of a wheel mechanism 1' according to another embodiment of the present invention. The main difference between wheel mechanism 1' and the wheel mechanism 1 described above is that wheel mechanism 1' further includes a washer 20 disposed between the wheel seat 12 and the fixing tube 16, as shown below. Figure 4 As shown. In this embodiment, the lower washer 20 is disposed on the lower edge 160 of the fixing tube 16. Therefore, after the wheel mechanism 1' is assembled, the lower washer 20 abuts against the bottom surface 124 of the wheel seat 12 and the lower edge 160 of the fixing tube 16, respectively, to prevent the wheel 14 and the wheel seat 12 from moving up and down, thereby achieving the effect of preventing the wheel 14 from shaking. In addition, placing the lower washer 20 between the wheel seat 12 and the fixing tube 16 can also prevent the bottom surface 124 of the wheel seat 12 from colliding with the lower edge 160 of the fixing tube 16 and generating noise. In this embodiment, the material of the lower washer 20 can be ethylene-vinyl acetate copolymer (EVA), rubber or other soft materials, depending on the actual application.

[0064] Please refer to Figure 5 , Figure 5 This is a cross-sectional view of a wheel mechanism 1” according to another embodiment of the present invention. The main difference between wheel mechanism 1” and wheel mechanism 1’ described above is that wheel mechanism 1” only includes a lower washer 20 and does not include an upper washer 18. In other words, the present invention may also only provide the lower washer 20 between the wheel seat 12 and the fixing tube 16, without providing the upper washer 18.

[0065] Please refer to Figures 6 to 9 , Figure 6 This is a perspective view of the wheel mechanism 3 according to another embodiment of the present invention. Figure 7 yes Figure 6Exploded view of wheel mechanism 3 in the image. Figure 8 yes Figure 7 A 3D view of the rotating shaft 320 in the middle. Figure 9 yes Figure 6 A partial cross-sectional view of wheel mechanism 3 in the figure.

[0066] like Figures 6 to 9 As shown, the wheel mechanism 3 of the present invention includes a fixed base 30, a wheel seat 32, a wheel 34, a fixed tube 36, and a lower washer 40. The wheel 34 is pivotally connected to the wheel seat 32, allowing the wheel 34 to rotate. The fixed tube 36 pivotally connects the wheel seat 32 to the fixed base 30. In this embodiment, the fixed tube 36 is fixed in the fixed base 30. Furthermore, the fixed tube 36 has a through hole 360, and the wheel seat 32 has a rotating shaft 320. The rotating shaft 320 is rotatably disposed in the through hole 360, such that the fixed tube 36 pivotally connects the wheel seat 32 to the fixed base 30. Figure 9 As shown, the limiting pin 42 can be inserted into the fixing base 30 and the fixing tube 36 from the side of the fixing base 30, and abut against the limiting groove 322 on the rotating shaft 320, so that the rotating shaft 320 is rotatably limited in the through hole 360 ​​of the fixing tube 36. In this way, the wheel seat 32 can rotate around the fixing base 30 together with the wheel 34.

[0067] like Figure 9 As shown, the lower washer 40 is positioned between the wheel seat 32 and the fixing tube 36. Figure 7 and Figure 9 As shown, the wheel seat 32 may have a directional turntable 324, fixed to the rotating shaft 320. For example... Figure 8 As shown, the shaft 320 may have a step 326. The step 326 is used for welding and positioning with the directional turntable 324 to determine the length of the shaft 320 exposed from the directional turntable 324. A lower washer 40 may be disposed on the directional turntable 324. Therefore, after the wheel mechanism 3 is assembled, the lower washer 40 abuts against the directional turntable 324 of the wheel seat 32 and the lower edge 361 of the fixing tube 36, respectively, to prevent the wheel 34 and the wheel seat 32 from moving up and down, thereby achieving the effect of preventing the wheel 34 from shaking. In addition, placing the lower washer 40 between the wheel seat 32 and the fixing tube 36 can also prevent the directional turntable 324 of the wheel seat 32 from colliding with the fixing tube 36 and generating noise. In this embodiment, the material of the lower washer 40 may be ethylene-vinyl acetate copolymer (EVA), rubber or other soft materials, depending on the actual application. Preferably, the top of the rotating shaft 320 can press against the fixing tube 36 to prevent the lower washer 40 from being crushed. Furthermore, the lower washer 40 can be interference-fitted with the rotating shaft 320 to prevent dust from entering. Moreover, the lower washer 40 can also be interference-fitted with the lower edge 361 of the fixing tube 36. Even further, lubricating oil can be applied around the lower washer 40 to prevent noise from being generated when the lower washer 40 and the fixing tube 36 are subjected to impact.

[0068] Therefore, according to the above technical solution, the wheel mechanism of the present invention has at least the following advantages and beneficial effects: The present invention provides washers around the fixed tube to prevent the wheel and wheel seat from moving up and down, thereby achieving the effect of preventing wheel vibration. In one embodiment, the upper washer can be placed between the fixed seat and the wheel seat to prevent the fixed seat from colliding with the wheel seat and generating noise. In another embodiment, the lower washer can be placed between the wheel seat and the fixed tube to prevent the wheel seat from colliding with the fixed tube and generating noise. Of course, the present invention can also provide both upper and lower washers around the fixed tube simultaneously to improve the effect of preventing wheel vibration.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A wheel mechanism, characterized in that, The wheel mechanism includes: One fixed base; One-wheel seat; A wheel, pivotally connected to the wheel seat; A fixed tube is used to pivotally connect the wheel seat to the fixed base; A washer is disposed between the wheel seat and the fixing tube; and One limit pin; The fixing tube is fixed in the fixing seat, the fixing tube has a through hole, the wheel seat has a rotating shaft, the rotating shaft is rotatably disposed in the through hole, so that the fixing tube pivotally connects the wheel seat to the fixing seat, the limiting pin is inserted from the side of the fixing seat into the fixing seat and the fixing tube, and abuts against the rotating shaft, so that the rotating shaft is limited in the through hole.

2. The wheel mechanism as described in claim 1, characterized in that, The limiting pin abuts against a limiting groove on the rotating shaft.

3. The wheel mechanism as described in claim 1, characterized in that, The wheel seat has a directional turntable fixed on the rotating shaft, and the lower washer is disposed on the directional turntable.

4. The wheel mechanism as described in claim 3, characterized in that, The rotating shaft has a step for welding and positioning to the directional turntable, thereby determining the length of the rotating shaft exposed from the directional turntable.

5. The wheel mechanism as described in claim 3, characterized in that, The lower washers abut against the lower edges of the directional turntable and the fixed tube, respectively.

6. The wheel mechanism as described in claim 1, characterized in that, The top of the rotating shaft abuts against the fixed tube.

7. The wheel mechanism as described in claim 1, characterized in that, The lower washer is interference-fitted with the rotating shaft.

8. The wheel mechanism as described in claim 1, characterized in that, The lower washer is interference-fitted with the lower edge of the fixing tube.

9. The wheel mechanism as described in claim 1, characterized in that, The lower gasket is made of ethylene-vinyl acetate copolymer or rubber.

10. The wheel mechanism as described in claim 1, characterized in that, The lower washer is surrounded by lubricating oil.

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