TWI615307B - Foot cushion surface layer - Google Patents

Description

Foot cushion surface layer

The present invention relates to a bicycle, a pedal exerciser or other seat cushion similar to a pedal-driven device, particularly with respect to the surface layer of the seat cushion.

Foot-operated devices, such as bicycles, pedal exercisers, etc., must be provided with a pad to support the user's body. The seat cushion generally includes a frame, a skin layer and an elastic layer disposed between the two. The frame is used to support the weight of the user and to secure the seat to the pedal drive with suitable fastening means. The elastic layer is used to provide proper elasticity and shock absorption, and the surface layer is used to contact the body part of the user. At present, the biggest disadvantage of the seat cushions is that when the user steps on the pedal driving device, the inner part of the thigh will repeatedly contact the periphery of the surface layer of the seat cushion, causing periodic friction and thus causing discomfort to the parts. pain.

In order to solve this drawback, U.S. Patent No. 7,367,619 provides an improvement in the provision of a plurality of outwardly extending and open-ended projections on the periphery of the seat shell frame for the rigidity of the portions. Less than the other parts of the frame. That is to say, the patent solves the problem of repeated friction between the inner side of the user's thigh and the surface of the seat cushion by making the periphery of the seat cushion frame have a softer portion. The facts show that these improvements do make the edge of the seat cushion softer, but that's it, because the periodic friction problem caused by the reverse contact between the surface of the seat cushion and the user is still not effectively solved. Moreover, such improvements will weaken the strength of the seat frame.

The present invention provides a seat cushion surface layer of a pedal driving device to solve the foregoing In the absence of prior art, the surface layer includes a body having a surface for contacting a body part of a user. The surface has at least a slip zone having a coefficient of friction that is less than other portions of the surface. The sliding zone can be arranged on the inner side of the corresponding user thigh to reduce the friction between the two.

Another feature of the seat cushion surface layer of the pedal driving device of the present invention is that the body of the surface layer has a narrow front portion and a wide rear portion, the elongated front portion having a top surface and two side edges, the sliding portion being disposed on the sliding portion On the surface of each of the sides. Such a skin layer is generally used for a bicycle seat cushion, and when the skin layer is applied to the seat cushion, each of the side edges corresponds to the inner side of each of the thighs of the user.

A further feature of the surface layer of the footrest driving device of the present invention is that the surface layer is made of a plastic leather material (for example, PU leather material), and the sliding area is made of a plastic material having a friction coefficient smaller than that of the plastic leather material. The material is directly attached to the surface of the body, for example, by screen printing, the pre-selected plastic material is directly applied to the surface of the body, where the so-called direct coating means that no other materials are needed (for example, an adhesive). ) as an intermediary. Of course, this is not limited to the screen printing method, and other methods can be adopted as long as it can directly attach to the surface of the body. In general, the smoothing zone has a thickness of at least 0.03 mm.

A further feature of the seat cushion surface layer of the pedal driving device of the present invention is that the body surface has, in addition to a sliding zone, at least one anti-slip zone, the friction coefficient of the anti-slip zone being greater than other parts of the surface. The anti-slip zone is usually disposed on a portion of the surface body corresponding to the buttocks of the user.

A further feature of the seat cushion surface layer of the pedal driving device of the present invention is that the sliding friction zone has a static friction coefficient of about 0.5 or less and a dynamic friction coefficient of about 0.3 or less. This value is measured according to the ASTM D-1894 test method. Yes, these friction coefficients have a significant effect on reducing friction.

10‧‧‧ Bicycle seat cushion surface

12‧‧‧PU leather made into body

14‧‧‧ front

16‧‧‧ wide rear

18‧‧‧ skirt

20‧‧‧ top surface

22,24‧‧‧ side

26, 28‧‧‧Slip zone

100‧‧‧ Bicycle Seat

102‧‧‧Shell

104‧‧‧Elastic shock absorbing layer

106‧‧‧ inner edge

40‧‧‧ Bicycle seat cushion surface

42‧‧‧Ontology

44‧‧‧ front

46‧‧‧ wide rear

48‧‧‧ skirt

50, 52‧‧‧Slip zone

54,56‧‧‧Slip zone

The present invention will be further described with reference to the embodiments and the accompanying drawings, wherein: FIG. 1 is a perspective view of a preferred embodiment of the present invention, which is used as a surface layer of a bicycle seat cushion; The figure shows a perspective view of a bicycle seat cushion as one of the surface layers; the third view is a cross-sectional view along the second FIG. 3-3; the fourth figure is a perspective view of another preferred embodiment of the present invention; and the fifth figure is A perspective view of another bicycle seat cushion as a surface layer in the embodiment shown in the fourth figure.

Referring first to the first to third figures, the surface of the bicycle seat cushion according to the present invention, as shown in the first drawing No. 10, has a body 12 made of PU leather, which is currently on the market. It is sold and will not be described here. To fit the bicycle seat cushion, the body 12 has an elongated front portion 14, a wide rear portion 16 and a skirt portion 18. The elongated front portion 14 has a top surface 20 and two side edges 22, 24. Two sliding zones 26, 28 are respectively disposed on each of the side edges 22, 24. The role of the skirt 18 will be detailed later.

The smoothing zones 26, 28 of the surface layer 10 are made of a material having a friction coefficient smaller than that of the surface of the body 12, and are directly attached to each of the side faces 22, 24 by a suitable method, for example, by screen printing. A raw material in which carbon fibers and cerium are mixed is disposed on each of the side edges 22, 24 to form a smoothing zone 26, 28. It should be noted that the present invention is only an embodiment of the present invention, and the present invention is characterized in that each of the sliding regions 26, 28 has a friction coefficient smaller than that of the body 12 and is directly attached to each of the bodies. On the sides 22, 24. In the present embodiment, according to the ASTM D-1894 test method, each of the smoothing zones 26, 28 has a static friction coefficient of about 0.5 and a dynamic friction coefficient of about 0.3. Further, each of the sliding regions 26, 28 has a thickness of at least 0.03 mm.

As shown in the second and third figures, the bicycle seat cushion 100 having the surface layer 10 It comprises a rigid frame 102 and an elastic shock absorbing layer 104. The elastic shock absorbing layer 104 is disposed between the frame 102 and the surface layer 10. The skirt 18 of the skin 10 is used to adhere to the inner edge surface 106 of the frame 102 when the skin 10 is disposed on the bicycle seat frame 102. As shown in the third figure, each of the sliding regions 26, 28 corresponds to the inner side of the thigh of the user after the seat cushion 100 is formed, and since the friction coefficient of the portion is low, the portions can be effectively solved. The problem of repeated friction with the surface of the seat cushion.

Referring to the fourth and fifth figures, FIG. 40 shows another bicycle seat surface layer according to the present invention. The surface layer 40 also has a body 42 made of PU leather. The body 42 There is a long front portion 44, a wide rear portion 46 and a skirt 48.

The elongated front portion 44 likewise has two smoothing zones 50,52. The skin 40 differs from the skin 10 in that the wide rear portion 46 of the body 42 has two non-slip zones 54, 56. Each of the anti-slip zones 54, 56 is made of a plastic material having a coefficient of friction greater than that of the body 42 and is directly attached to the surface of the wide rear portion 46 in a suitable manner for corresponding to the buttocks of the user. Since the friction coefficient of each of the anti-slip zones 54, 56 is large, the sliding of the user's buttocks on the surface of the seat cushion during riding can be reduced, thereby solving the problem of repeated friction.

10‧‧‧ Bicycle seat cushion surface

12‧‧‧PU leather made into body

14‧‧‧ front

16‧‧‧Wide

18‧‧‧ skirt

20‧‧‧ top surface

22,24‧‧‧ side

26, 28‧‧‧Slip zone

Claims (7)

A seat cushion surface layer of a pedal driving device, comprising: a body having a surface, a narrow front portion and a wide rear portion; the long front portion having a top surface and two side edges; and a second sliding portion, respectively On the surface of each of the sides of the elongated front portion, the friction coefficient of each of the sliding regions is smaller than the surface of the body. The seat cushion surface of the pedal driving device of claim 1, wherein the body further has a skirt. The seat cushion surface of the pedal driving device according to claim 1 or 2, wherein the system is made of plastic leather, and each of the sliding regions is made of a plastic material having a friction coefficient smaller than a surface of the plastic leather material and They are attached directly to the surface of each of the sides of the elongated front portion of the body. The seat cushion surface layer of the pedal driving device according to claim 3, wherein the system is made of PU leather, and each of the sliding regions is made of a raw material of a mixture of polycarbon and bismuth. The seat cushion surface layer of the pedal driving device according to claim 4, wherein each of the sliding regions is directly applied to each of the side faces of the elongated front portion of the main body by screen printing. The seat cushion surface layer of the pedal driving device according to claim 4, wherein the sliding portion has a thickness of at least 0.03 mm. The seat cushion surface of the pedal driving device according to claim 1, according to the ASTM D-1894 test method, wherein the sliding friction coefficient of each of the sliding regions is about 0.3 or less.