JPH0452148Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a hinge applied to a tilting opening/closing seat of a small vehicle such as a motorcycle or a tricycle.

Prior Art and its Problems In small scooter-type vehicles, due to the characteristics of the vehicle body shape having a low-floor footrest, the front part of the seat is designed so that the tilting opening/closing seat can be opened using the footrest space. A seat attachment structure with a single hinge is used. However, since it is a single hinge, errors in fixing it to the seat and vehicle body side members (e.g. fuel tank, protrusions attached to the vehicle body frame, etc.) may cause misalignment, especially in the vehicle width direction. It is difficult to install the seat in the correct position.

To deal with this problem, a conventional structure has been adopted in which the first and second hinge parts that make up the hinge are provided integrally with the seat bottom plate and the vehicle body side member, respectively, and both hinge parts are connected with a hinge pin. has been done.

However, in the case of a seat whose bottom plate has an inverted U-shaped cross section and a particularly narrow front section, the side walls of the bottom plate get in the way, making it difficult to pass the hinge pin through the openings of both hinge pieces. It was difficult to tighten the hinge pin, and the hinge pin had to be tightened using a wrench, reducing work efficiency.

1 to 3 show three examples of measures for improving the efficiency of seat assembly work.

In the example shown in FIG. 1, the hinge piece 03 integrally provided on the bottom plate 02 of the seat 01 is made to protrude below the side wall of the bottom plate, so that the hinge pin can be easily inserted into the opening 04, and the hinge pin can be tightened by an automatic fastener. We are making it possible to do this.

In the example shown in FIG. 2, the short hinge pins 05,0
5, and hinge pieces 08, 0 that are integrated with the vehicle body side member 07 using split pins 06, 06 for preventing falling out.
8, a structure is adopted in which hinge pieces 010, 010 are integrated with the bottom plate of the seat 09,
The effort required for screw tightening can be saved.

In the illustrated example in FIG. 3, a hinge receiving piece 012 is integrally provided on a vehicle body side member 011, and a hinge piece 015, which is previously connected to a hinge piece 014 that is integral with the bottom plate of a seat 013, is connected to the hinge piece 015 by screws 016, 016. The screw 016 can be tightened using an automatic tightening tool.

However, in the case of the one in Fig. 1, the hinge is exposed to the outside of the seat 01 when the seat 01 is closed, so the appearance is impaired, and the one in Fig. 2 is
There are a large number of parts, and it is difficult to say that assembly efficiency is good. In addition, in the case of FIG. 3, the hinge receiving piece 012 that supports the hinge piece 015 is also
Similar to 5, this can be used as a hinge part on the vehicle body side, and two screws 016 are required.
There are many parts, and the work of attaching the hinge receiving piece 012 to the vehicle body side member 011 (welding work) and screwing and fixing the hinge piece 015 to the hinge receiving piece 012 must be done, so it cannot be said that the work efficiency is good. This is difficult and causes an increase in vehicle production costs.

Means for Solving the Problems An object of the present invention is to provide a seat hinge that has a small number of parts, has good seat assembly efficiency, and does not impair its appearance.

The purpose of this is to connect a first hinge piece that is integrally provided with the vehicle body side member, a second hinge piece that is integrally provided with the seat bottom plate, and an L that penetrates and connects both hinge pieces.
The first hinge piece includes at least a notch that removably receives and supports the hinge pin, a locking opening into which the tip of the hinge pin can be inserted, and a locking opening in the notch. This is achieved by providing a seat hinge for a small vehicle, characterized in that it has a threaded portion that can threadably fix the proximal end of the hinge pin at a close position.

Embodiment Hereinafter, an embodiment of the present invention shown in FIGS. 4 to 12 will be described.

The scooter type motorcycle 10 has a low floor footrest space A between the front wheel FW and the rear wheel RW, and a unit swing type power unit PU is supported on the rear body frame assembly 16.
A fuel tank T is placed and fixed on the top of the rear body frame assembly 16, and a seat 40 is arranged so as to cover the fuel tank T so as to be tiltable and openable in the front and rear directions (see FIG. 4). , P indicates the center of tilt of the seat 40).

As shown in FIG. 5, the body frame of the motorcycle 10 includes a head pipe 12 that supports the handlebar rotation shaft, a main frame 14 that is connected to the head pipe 12 and extends toward the rear of the vehicle body while curving downward greatly. The main component is a rear body frame assembly 16 connected to the rear end of the frame 14, and the body frame includes a low-floor footrest plate 58.
The entire body is covered by a combination type vehicle body cover 56 including.

A generally U-shaped seat support pipe 18, which rises at an angle toward the front of the vehicle body, is welded at both base ends to the top front position of the rear body frame assembly 16. A first hinge piece 20 is welded to the top of the seat support pipe 18, which corresponds to the bottom of the U. This first hinge piece 20 is formed of a generally square base wall 22 and side walls 24, 32 which rise from the left and right sides of the base wall 22.
A notch 26 is formed in the front end of side wall 24, and a nut 30 is welded and fixed to the inside surface of side wall 24 in correspondence with a screw-fitting opening 28 formed at a position close to seat support pipe 18 and away from notch 26. Also, a locking opening 34 is formed in side wall 32, which coincides with the bottom of notch 26 (notch bottom) when viewed from the side of the vehicle body (see Figures 5 to 8 for the above).

On the other hand, the seat 40 is composed of a bottom plate 46 having a substantially inverted U-shaped cross section, a resin foam 42, and a skin 44 covering the resin foam 42. A second hinge piece 50 is provided by integral molding, which bulges downward at a height not exceeding the height of L
A hinge pin 36 shaped like a letter can be inserted and locked along the vehicle width direction (see FIGS. 9 to 12).

The seat 40 having such a structure is connected to the first hinge piece 20.
When assembling the L with the proximal flange piece 38,
The hinge pin 36 in the shape of a letter is passed through the second hinge piece 50 provided on the main wall 48 of the bottom plate 46 in advance, and the front end of the seat 40 is brought close to the first hinge piece 20. After fitting the tip of the hinge pin 36 into the locking hole 34 formed in the side wall 32 of the first hinge piece 20, and fitting the part of the hinge pin 36 near the bent part into the notch 26 of the side wall 24, the hinge pin 36 is inserted. 36 is aligned with the screw opening 28 in the side wall 24, and then the screw 54 is screwed into the nut 30, thereby connecting the first hinge piece 20 and the first hinge piece 20. It is only necessary to connect the second hinge piece 50. At that time, since the screw opening 28 is exposed without being hidden by the seat 40 in the vertical position, an automatic fastening tool can be used to efficiently connect the screw opening 28. Screw tightening can be performed (see Figure 12).

The seat 40 assembled in this way can be tilted open and closed in the longitudinal direction of the vehicle body with the hinge pin 36 as the center of tilt (point P), but if the seat 40 is closed and in a horizontal position, as shown in FIG. As is clear from FIG. 9, the first hinge piece 20 is located inside the seat 40 and has a good appearance (in FIG. 5, R is the vibration absorbing rubber attached to the bottom plate 46). and is in contact with the fuel tank T).

Furthermore, when the seat 40 is tilted and released using the hinge pin 36 as a fulcrum to take an upright position, most of the first hinge piece 20 can be seen from the side of the vehicle body, and if necessary for vehicle maintenance, the screws can be removed. 54 can be easily removed without being obstructed by the seat 40,
The seat 40 can be quickly removed by pulling out the tip of the hinge pin 36 along with the seat 40 from the locking opening 34 of the side wall 32.

Note that the dead weight of the seat 40 and the weight of the occupant act on the locking opening 34 and the notch 26 of the first hinge piece 20 via the main shaft portion of the hinge pin 36, and the L-shaped bottom portion of the hinge pin 36 ( Base end collar piece 38
No excessive bending load will be applied to the parts provided with the

Also, when decelerating while the vehicle is running, or when seat 40
When tilting and opening the L
Since a tensile force is exerted on the bottom portion, there is no problem even if the proximal end flange portion 38 is fixed with the screw 54.

Effects of the invention As is clear from the above explanation, the first hinge piece provided integrally with the vehicle body side member, the second hinge piece provided integrally with the seat bottom plate, and both hinge pieces are penetrated. and an L-shaped hinge pin connected to each other, and the first hinge piece includes at least a notch that removably receives and supports the hinge pin;
Provided is a seat hinge, characterized in that it has a locking opening into which the tip end of the hinge pin can be inserted, and a threaded part into which the base end of the hinge pin can be screwed and fixed at a position close to the notch. It was done.

This seat hinge requires only a single L-shaped hinge pin and screw in addition to each hinge piece that is integrated with the seat and the vehicle body side member, so the number of parts is small, and moreover, it can be installed inside the seat with the seat open. Since the hidden screw part is exposed outside the seat when the seat is opened, it is possible to improve the assembly workability while maintaining a good appearance.

[Brief explanation of the drawing]

1 to 3 are schematic diagrams showing a known seat hinge for a small vehicle, FIG. 4 is a side view of a motorcycle equipped with a seat hinge according to an embodiment of the present invention, and FIG. A perspective view showing the body frame of a motorcycle, FIG. 6 is a side view of the main parts, FIG. 7 is a view taken along the - line in FIG. 6, and FIG.
9 is a cross-sectional view of the main parts of the seat installed in the motorcycle, FIG. 10 is a bottom view of the main parts of the seat, and FIG. 11 is a cross-sectional view taken along the - line in FIG. 9; FIG. 12 is a schematic perspective view showing the hinge assembly relationship of the seat. 10...Motorcycle, 12...Head pipe,
14... Main frame, 16... Rear body frame assembly, 18... Seat support pipe, 20... First hinge piece, 22... Base wall, 24... Side wall,
26...notch, 28...screw opening, 30...
Nut, 32... Side wall, 34... Locking port, 36...
... Hinge pin, 38 ... Base end flange piece, 40 ... Seat, 42 ... Resin foam, 44 ... Skin, 46 ...
... Bottom plate, 48 ... Main wall, 50 ... Second hinge piece, 52 ... Side wall, 54 ... Screw, 56 ... Body cover, 58 ... Low floor footrest, A ... Low floor Footrest space, T...Fuel tank, FW...Front wheels, RW...Rear wheels, PU...Power unit.

Claims (1)

[Scope of Claim for Utility Model Registration] In a small vehicle equipped with a seat attached to a vehicle body side member via a hinge so as to be tiltable and openable, a first hinge piece provided integrally with the vehicle body side member and a seat bottom plate. and an L-shaped hinge pin that passes through and connects both hinge pieces, and the first hinge piece is configured to removably receive the hinge pin. It has a notch for supporting this, a locking opening into which the tip of the hinge pin can be inserted, and a threaded portion into which the base end of the hinge pin can be screwed and fixed at a position close to the notch. Features a seat hinge for small vehicles.