JPS61191482A - Seat for bicycle, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat (hereinafter also referred to as a "cycle seat") for a bicycle, tricycle, motorcycle, etc. (hereinafter collectively referred to as "bicycle etc.").

This type of sheet is disclosed, for example, in US Pat. No. 4,970°345.
No. 4,141,587. These patented cycle seats are seats with a rear seat that provides additional thrust to the pedaler and increases comfort for the motorcyclist; It has a specific peripheral contour to provide sufficient support to the buttocks without causing bruising.

In contrast, the present invention not only provides comfort and good thrust efficiency without interfering with the cargo bed, but also provides comfort due to spring elasticity, which cannot be obtained with conventional seats, and allows for adjustment of comfort. We provide a cycle seat that makes it possible. The seat of the present invention can be adjusted fore and aft to accommodate the length and shortness of the rider's legs, and has the vertical adjustment inherent in conventional seat mounting posts for bicycles, bicycles, and other light motorcycles. allow full use. Moreover, the increase in comfort level is achieved without hindering the ability of experienced drivers to exercise their driving skills, and increases the enjoyment of riding without causing bad riding habits.

The present invention provides a seat for a conventional bicycle or the like having an upwardly projecting seat strut and a ratchet-type strut clamp with a fixing bolt. The seat of the present invention is comprised of a seat base and a seat back that stands up from the seat base, and a pair of parallel rails spaced apart in the transverse direction are provided vertically from the lower surface of the seat base. The rail has longitudinally spaced transverse holes drilled in its front and rear portions. These holes can receive pivot bolts and also constitute attachment means for a shell made of gold H4, which is used as a reinforcing element in the case of plastic sheets.

The holes at the rear of the rail can also serve as attachment means for attaching a cargo platform to the seat. The spring cradle with rear splash cup has a side bar extending forward from the cup to a front arm having an abutment against the underside of the seat base or shell. Each side bar is provided with horizontally aligned holes for receiving the fixing bolts of a conventional seat post clamp and cradle for securing the clamp to the seat post of a bicycle or the like. A hole is drilled in the front arm that aligns with a transverse hole drilled in the side rail for receiving a pivot bolt. The upper end of a compression spring is pressed against the lower surface of the seat base between the side rails, and the lower end of the spring is seated within the cup behind the pivot bolt. When a downward stress is applied to the rear of the seat due to the rider's pedaling action or from an impact from an uneven ground surface, the seat will resist the compression spring about the pivot bolt to the extent permitted by the biasing force of the compression spring. Pivot downwards. The spring thus dampens the movement of the seat in a manner that is comfortable for the rider.

Several conventional types of seat post clamps can be used, but the preferred one is one with loops of two different diameters, one with a small diameter loop and one with a large diameter attached to the corresponding seat post clamp. It can be used selectively depending on the diameter of the strut. The strength of the compression spring can be changed depending on the rider's weight and skill.

DESCRIPTION OF THE EMBODIMENTS In the embodiments shown in FIGS. 1 to 4, the seat 11 of the present invention includes a seat base 12, a seat back (rear vehicle seat) rising from the seat base, and side parts hanging down from the seat base. It has rails 16.17. A seat pad 18 is fixed to the upper surface 12A of the seat base 12 and the upper surface 14A of the seat back 14. The seat back 14 is
It has a uniform thickness, and the surface on which the seat para V18 is fixed is concave, and the surface on the opposite side is convex.◇The bottom side rails 16 and 17 extend rearward and have a rear end. 21 extends upward and is aligned with the convex surface portion 14B of the pack 14. As can be seen in FIG. 2, the rails 16.17 are laterally spaced in the center of a wide area of the seat base 12 inside the outer edge 23.24. The seat pad 1'' 18 has substantially the same peripheral contour as the seat base and pack and can be formed of any suitable resilient material, such as foam plastic or rubber. It is preferable to have an outer skin that can withstand sunlight.

Referring to FIG. 1, each side rail 16,17 is bored with an elongated slot 26 that provides a means for attaching a spring rail 28 and a conventional seat post clamp 29 to the seat. It is set up. Its attachment is done via pivot bolts 31. Pivot bolt 3
1 are inserted through the front holes 32 (FIG. 4) of each rail in FIG. 1, but the positions of the holes and bolts in FIG. 35
This shows the case where the vehicle is positioned at the rearmost position. The upper frame member 37 and strut socket 38 of the bicycle 56 are shown in phantom in FIGS. 1 and 4.

As is clear from the bottom view of the other embodiment shown in FIG.
In the embodiment of FIGS. 8 to 8, it also tapers and terminates in a narrow front section 41. The seat base is wide at the raised seat part of the back 14 to provide complete support to the rider's buttocks, but due to the above-mentioned tapered shape, it is difficult to use when pedaling a bicycle or tricycle. Sufficient rearance is provided for the rider's inner thigh to move along the edge of the seat base. The widest point of the seat base is the second
The narrowest point, indicated by reference numerals 23 and 24, is the point shown in FIGS. 1 and 4. The seat base tapers forward from a diagonal vertical line 45 indicating the front of the side rails 16,17. The height of the seats 16, 17 below the lower surface 46 of the seat base is determined, in part, by the material of the seat and the plastic molded seat as well as the shell 62 of the embodiment of FIG. It must be changed depending on whether a gold Mff body is used or not. Of course, to provide sufficient strength to resist the stresses exerted by riders of different weights and the rocking moments of the seat against the spring bias of the compression springs 47, the holes 32 And how thick should the rails 16 and 17 below the slot 26 be?
It is determined by the strength of the material.

As seen in FIG. 3, the splash crater 28 has side pars 51, 52 that are laterally spaced from each other.

Each side par 51,52 has a cup side wall 5 at its rear.
3 and whose cup side walls 53,55 are connected to each other by a transverse end wall 54 and a transverse intermediate wall 55. They cooperate with the bottom wall 56 to define a spring catch cup 57 in which the compression spring 47 seats. Spring 4
A cylindrical wear pad 58 is fitted onto the upper end of the seat base 12 and acts as a cushion against the lower surface of the seat base 12. Rose F58 is clearly shown in FIGS. 2 and 6 and serves the same function in both embodiments. Pad 58 is typically formed from Teflon, but may be formed from other well-known non-abrasive materials.

The side bars 51,52 of the spring crane extend from the cup 57 into a pair of longitudinally spaced holes (only one hole 59 is shown in FIG. 1.4). . Although the tightening bolts 61 are inserted into the front set of holes in FIG. It can be changed backwards.

The clamp 29 is, for example, a Perlins Magician.
The Manufacturing Company's conventional bicycle seat post clamp is a standard double-loop clamp that fits either of the two diameters of conventional bicycle seat struts. This clamp consists of two
It has two loops 29A and 29B. Loop 29B
is larger than loop 29A, and in the embodiment of FIG. 1.5, loop 29B is secured to column 35.

By loosening the nut on bolt 61, the loop of the clamp can be rotated about bolt 61 and the desired loop 29A or 29B can be selectively positioned in alignment with seat post 35, and seat 110 relative to the post. You can change the position in the front and back direction. Also, a conventional ratchet-type or *a-type gripping member 65 (FIG. 8) allows the inclination of the seat 11 relative to the bicycle's upper frame member 37 to be adjusted as desired.

The spring cradle 28 is provided with front arms 67, 68, each with an abutment 69, 69, formed integrally with a side bar 51, 52. These front arms and abutments are narrowed by the weight on the seat.
1 is pushed down toward the upper frame member 37, the contact portion contacts the lower surface 46 of the seat base, thereby setting the positional relationship of the seat relative to the cradle 28 and tilting the seat about the 1 pivot bolt 31. Restrict. The pivot bolt 31 is attached to the front arm 67.6 of the cradle.
Since the contact portion 69.69 extends through the hole 70 (Fig. 6) and contacts the lower surface of the seat base in front of the pivot bolt 51, the forward inclination of the seat is
The pivot bolt 51) is controlled by the degree of protrusion of the upper arm 67.6B. The rearward tilting of the seat, which gives the seat a shoe effect, takes place against the spring load of the compression spring 47 and is caused by its tilting, as a result of the pedaling action, or due to irregularities in the running surface. It changes depending on the weight shift. It varies depending on the force exerted by the rider's weight on the compression spring 47. The spring 47 can be changed according to changes in riding conditions, and both hard and soft springs are easily available.

To prevent lateral displacement of the cradle 28 with respect to the center of the seat base, the pivot bolt 31 is provided with a tubular spacer 31A between each side rail 16.17 and the respective cradle side bar 51.52. , 31B
is inserted with scissors.

When the seat support clamp 29 is tightened to the seat support 35 and the spring cradle 28 is fixed to the clamp 29, the positional relationship between the seat support 35 and the seat 11 is determined by which hole the pivot bolt 31 is inserted into. It will be done. 1, the pivot bolt 31 is inserted into the forward rail hole 32, whereas in FIG. 4, the pivot bolt 31 is inserted into the slot or slot 26. The relative position of the seat 11 with respect to the support column 35 is located further forward in FIG. 1 than in FIG. 4. Further, in the case of FIG. 4, the position of the sheet can be moved forward or backward by the length of the hole 26.

As mentioned earlier, tighten the strut clamp 29 with the bolt 61.
or by pivoting around the bolt 61
The longitudinal positional relationship between the seat column and the seat can be further adjusted by moving the seat back into the holes 59 in the bars 51,52 of the cradle.

All such adjustments can be easily made with basic tools commonly used by cyclists.
The seat of the present invention can be tailored to suit the rider's wishes.

The nine advantages described above for the embodiment of FIG. 1 also apply to the embodiment of FIG. The main difference in the embodiment of FIG. 5 is the provision of a protective shell 62 so that the seats 11 can be made of molded plastic material. In this embodiment, the seat base 71 and seat back 72 are integrally molded and are adapted to receive a seat parallax 73 of the same form as that of the embodiment of FIG. Sea) 11A also has side rail 1 as shown in Figures 5 to 8.
6.17. The shell body 62 has a U-shaped cross section as shown in FIG. , the depending side walls 76 of the shell body 62.
It is fixed by a pair of bolts 74 inserted through 77 and the pivot bolt 31. The pivot bolt 31 also passes through the rail 16.17 and the side wall 76.77 of the shell 62 and through the front hole 7 of the front arm 67.68 of the cradle.
0 and causes the abutting portion 69.69 of the cradle to abut against the lower surface 79 of the shell 62. The wear pad 58 of the compression spring 47 is pressed against the lower surface 79 of the shell 62 by the spring, and the biasing force of the spring 47 is distributed from the bottom wall 56 of the cradle cup 57 as in the embodiment of FIG. be done.

The shell fixing bolts 74 inserted through the rear portions of the 11 seats can also be used to attach a cargo platform to the seats.

Bolt holes can be drilled in the rear of the seat 11 of the embodiment of FIG. 1 for the same purpose. Although not shown in FIG. 5, the embodiment of FIG. 5 may also include holes or slots, such as slots 26 in the embodiment of FIG.

[Brief explanation of the drawing]

FIG. 1 is a left side view of the cycle seat of the present invention, FIG. 2 is a partially sectional end view taken along line 2-2 in FIG.
Fig. 3 is a plan view of the cradle of the seat shown in Fig. 1, Fig. 4 is a partial side view showing a different usage of the seat shown in Fig. 8g1;
FIG. 5 is a left side view of another embodiment of the present invention, and FIG. 6 is a left side view of another embodiment of the present invention.
FIG. 7 is a rear view of the seat shown in FIG. 5, and FIG. 8 is a plan view from below of the seat shown in FIG. 11: Seat 12: Seat base 14 Nijidopack 16. 17: Side rail 26: Slotted hole 28: Spring cradle 29: Seat support clamp 31: Pivot bolt 32: Front hole 35: Seat support 46: Underside of seat base 47 : Compression spring 51.52: Side bar 57: Spring receiver cup 61: Bolt 62: Ya body 67.68: Front arm 69.69A: @ Contact part 70: Hole FIG, 3 FIOol.

Claims (1)

[Claims] 1) A seat base for a conventional bicycle or the like having an upwardly protruding seat column 35 and a conventional seat column clamp, and a seat base having a peripheral edge that is wider at the rear than at the front. , a seat back rising from the seat base, a plurality of parallel rails depending laterally spaced apart from a lower surface of the seat base, and longitudinally spaced spaced rails at front and rear portions of the parallel rails; a transverse hole drilled in the rail; a transverse pivot bolt inserted through the hole in the front of the rail; a central compression spring pressed against the seat base behind the pivot bolt; and a central compression spring pressed against the seat base behind the pivot bolt; a spring cradle mounted in fixed position relation to the seat upright by a upright clamp;
The cradle has at its front a stop member adapted to abut the lower surface of the seat base, and at its rear a central cup adapted to receive the lower end of the compression spring in a loose-fitting relationship. A sheet consisting of 2) a shell secured to the underside of the seat base between the rails, the shell having depending side walls parallel to each of the rails, each side wall having a wall extending in each transverse direction of the rails; 2. A sheet according to claim 1, wherein the sheet is perforated with transverse holes aligned with the holes of the sheet. 3) the cradle comprises side bars connected to the cup and adapted to extend forwardly to form the stop members, each stop member extending upwardly from the corresponding side bar to the seat; It consists of an arm extending toward the lower surface of the base, and an abutment portion extending substantially perpendicularly to the arm and abutting against the lower surface of the seat base, and each arm is provided with a hole for receiving the pivot bolt. A sheet according to claim 1. 4) Each of said side bars has a transverse aperture adjacent said arm and a transverse aperture in a region between said cup and arm. Sheet listed.