JP4584825B2 - Brake pedal assembly structure - Google Patents

Description

  The present invention relates to a brake pedal assembly structure suitable for application to a motorcycle.

  In this type of brake pedal assembly structure, a U-shaped coupling tool is attached to the rear end portion of the brake pedal via a joint pin, and a push rod of a master cylinder is connected to the U-shaped coupling tool. Furthermore, a split pin for retaining is inserted into the joint pin (see, for example, FIGS. 2 to 4 of Patent Document 1).

However, in this case, in order to avoid the cotter pins from touching the occupant's feet, it is necessary to proceed with the assembly work carefully so that the cotter pins are located on the inner side of the vehicle body. And the technique (henceforth the well-known technique 1) which extends | stretched a push rod until it reaches a joint pin and assembled | attached a brake pedal was proposed (for example, refer FIGS. 6-8 of patent document 1).
Japanese Utility Model Publication No. 63-40292

  However, in this known technique 1, the work of assembling the brake pedal is complicated. That is, when the brake pedal is assembled, first, the push rod is screwed into the coupling tool until the joint pin enters the through hole of the coupling tool, and then the coupling tool is attached to the brake pedal via the joint pin. After that, the master cylinder must be rotated until the push rod penetrates the joint pin, so that the work of assembling the brake pedal becomes complicated.

  Also, if you try to replace the brake pedal, you will be forced to do the troublesome task of removing the master cylinder from the vehicle body, removing the brake hose from the master cylinder, and turning the master cylinder, which makes the brake pedal replacement work complicated. .

  An object of this invention is to provide the brake pedal assembly | attachment structure which can solve such a subject.

In the invention of assembling a brake pedal structure according to 請 Motomeko 1, connector is mounted via a joint pin at the rear end portion of the brake pedal, the brake pedal assembly structure pushrod of the master cylinder is connected to the connector The connecting device has a U-shape, a pair of side portions into which a rear end portion of the brake pedal is inserted, an insertion hole that is formed in these side portions and into which the joint pin is inserted, and the push A connecting portion that is connected to the tip of the rod and connects the side portions, and the joint pin has a split pin insertion hole for inserting the split pin at one end of the pin main body, and the other end of the pin main body Is provided with a flange, which extends beyond the outer peripheral edge of the side surface in two directions, rearward of the vehicle body and below the vehicle body, along the side surface portion of the connector. And a first folded piece formed by folding the extended piece extending rearward of the vehicle body into the inner space of the connector so as to be positioned on the extension line of the rear end portion of the brake pedal. And a second folded piece formed by folding the extended piece extending downward in the vehicle body into the inner space of the connector so as to engage with the outer peripheral edge on the lower side of the side surface portion of the connector. The amount of deviation of the first folded piece from the pin main body is larger than the width of the side surface portion on the lower side, the front side, and the rear side from the insertion hole, and on the upper side from the insertion hole. And the amount of deviation of the second folded piece from the pin body is larger than the width of the side surface portion below the insertion hole and above the insertion hole. Smaller than the width of the side portion on the side, front side, and rear side Kuna' wherein the are.

  According to the present invention, by restricting the insertion direction of the joint pin by the insertion direction restricting means, the split pin is positioned on the inner side of the vehicle body without carefully proceeding with the assembling work. You can avoid touching.

  Moreover, the brake pedal can be assembled by simply connecting the brake pedal and the connecting tool with a joint pin and inserting the split pin into the joint pin. The assembly work of the brake pedal becomes easy. In addition, since the brake pedal can be replaced only by inserting and removing the joint pin and the split pin, the brake pedal can be easily replaced as compared with the known technique 1 that involves removing the master cylinder and the brake hose.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a right side view of a motorcycle, FIG. 2 is a front view showing an embodiment of a brake pedal assembly structure according to the present invention, and FIG. 3 is a perspective view showing a main part of the brake pedal assembly structure shown in FIG. 4 is a rear view showing an embodiment of the brake pedal assembling structure according to the present invention, FIG. 5 is a perspective view of the brake pedal assembling structure shown in FIG. 4, FIG. 6 is a perspective view of a U-shaped connector, and FIG. FIG. 8 is a perspective view of the joint pin, FIG. 9 is a view of the joint pin shown in FIG. 8A, FIG. 10 is a view of the joint pin shown in FIG. FIG. 12 is a plan view showing the next step of the brake pedal assembly work (cross-sectional view taken along the line E-E in FIG. 11), and FIG. 13 is an assembly work of the brake pedal. The back showing the next step of FIG. 14 is a rear view showing a first pattern of joint pin misinsertion, FIG. 15 is a cross-sectional view taken along the line CC of FIG. 14, and FIG. 16 is a joint pin misinsertion. FIG. 17 is a front view showing a third pattern of erroneous joint pin insertion, FIG. 18 is a front view showing a fourth pattern of erroneous joint pin insertion, and FIG. FIG. 20 is a front view showing a joint pin rotation inhibiting mechanism.

  As shown in FIG. 1, the motorcycle 1 includes a body frame 2, and the body frame 2 has a cylindrical head pipe 4. A front fork 3 is rotatably connected to the head pipe 4. A front wheel 6 having a hydraulic disc brake is rotatably supported at the lower end portion of the front fork 3, and a steering handle 5 is attached to the upper end portion of the front fork 3.

  Further, as shown in FIG. 1, an upper cowl 7 is attached to the front of the vehicle body frame 2. The upper cowl 7 has a two-lamp headlight 26, a wind screen 29, and a pair of left and right front winkers 27. A pair of left and right rearview mirrors 30 are attached.

  Further, as shown in FIG. 1, a water-cooled in-line four-cylinder horizontal engine 19 is mounted at the center of the body frame 2, and a middle cowl 8 is attached to the upper cowl 7 on the left and right sides of the engine 19. Removably attached in a connected form. Further, a lower cowl 9 is detachably attached to the lower side of the engine 19 so as to be connected to the middle cowl 8. A fuel tank 21 is placed above the engine 19, and a front seat 22 is mounted behind the fuel tank 21. A rear seat (pillion seat) 51 is mounted behind the front seat 22, and a seat belt 52 is attached to the rear seat 51. A rear fender 42 is attached to the lower side of the rear seat 51, and a muffler 43 and a pair of left and right rear winkers 44 are attached to the rear fender 42.

  Further, as shown in FIG. 1, a swing arm (rear fork) 23 is swingably supported at the lower rear part of the vehicle body frame 2, and a hydraulic disc brake is attached to the rear end of the swing arm 23. The provided chain drive type rear wheel 25 is rotatably supported below the rear fender 42.

  Further, as shown in FIGS. 2 and 3, a brake pedal 10 is supported on the right side of the lower part of the vehicle body frame 2 so as to be rotatable about the axis CT <b> 1. Is formed with a stepping portion 10a. Further, a joint pin insertion hole 10b is formed in the rear end portion 10c of the brake pedal 10 so as to penetrate horizontally, and the brake pedal 10 is inserted through the joint pin 11 inserted through the joint pin insertion hole 10b. It is attached to the U-shaped connector 12. A push rod 15 of a master cylinder 13 for operating a hydraulic disc brake of the rear wheel 25 is connected to the U-shaped coupler 12. As shown in FIG. 2, the master cylinder 13 is fixed to the vehicle body frame 2 via a bracket 20, and a reservoir 18 is connected to the master cylinder 13 via a brake hose 17. The reservoir 18 is fixed to the vehicle body frame 2 via a bracket 24.

  As shown in FIGS. 6 and 7, the U-shaped connector 12 includes a pair of flat plate-like side portions 12 a and 12 a into which the rear end portion 10 c of the brake pedal 10 is inserted, and these side portions 12 a and 12 a. And a flat plate-like connecting portion 12 b connected to the tip of the push rod 15. Each side surface portion 12a is formed with an insertion hole 12c through which the joint pin is inserted, and the connecting portion 12b is formed with a female screw 12d into which the push rod 15 is screwed.

  Further, the joint pin 11 has a cylindrical pin body 11a as shown in FIGS. At the tip of the pin body 11a, a split pin insertion hole 11b is formed at a position slightly protruding inward of the vehicle body from the side surface portion 12a of the U-shaped connector 12. The split pin 16 is inserted into the split pin insertion hole 11b. Has been inserted. Also, a flange portion 11c is formed at the rear end of the pin body 11a. The flange portion 11c includes two extending pieces 11d having an L shape in side view, a first folded piece 11e, and a second And a folded piece 11f. Here, the two extending pieces 11d are arranged in two directions along the side surface portion 12a of the U-shaped connector 12; rearward of the vehicle body (the rear end side of the brake pedal 10) and lower side of the vehicle body (lower end side of the U-shaped connector 12). It extends to. Further, as shown in FIGS. 2 and 3, the first folded piece 11e is positioned at the rear end of the vehicle body of one extension piece 11d so as to be positioned on the extension line LN of the rear end portion 10c of the brake pedal 10. As shown in FIGS. 7 and 9, the deflection amount L1 is formed on the front and rear sides of the insertion holes 12c and 12c of the U-shaped connector 12 as shown in FIGS. The width of the peripheral portion, that is, the front and rear peripheral width W1 is larger than the insertion holes 12c and 12c of the U-shaped connector 12, and the width of the peripheral portion on the lower side, that is, the lower peripheral width W2, and the insertion hole 12c of the U-shaped connector 12. The width from the upper end of 12c to the connecting portion 12b, that is, the upper peripheral width W3 is smaller. Further, the second folded piece 11f is formed by folding the end portion of the other extending piece 11d below the vehicle body inwardly of the vehicle body, and its deviation amount L2 is slightly larger than the lower peripheral width W2. In addition, it is smaller than the front and rear peripheral width W1 and the upper peripheral width W3.

  Since the motorcycle 1 has the above configuration, when the motorcycle 1 is manufactured, the brake pedal 10 is assembled according to the following procedure.

  First, as shown in FIG. 11, in a state where the U-shaped coupler 12 is suspended from the push rod 15 of the master cylinder 13, the brake pedal 10 is inserted between the pair of side surface portions 12 a, 12 a of the U-shaped coupler 12. insert. At this time, the joint pin insertion hole 10 b of the brake pedal 10 is aligned with the insertion holes 12 c and 12 c of the U-shaped connector 12.

  Next, as shown in FIG. 12, the joint pin 11 is inserted from the outside of the vehicle body to the inside of the vehicle body so as to sew the insertion holes 12 c and 12 c of the U-shaped connector 12 and the joint pin insertion hole 10 b of the brake pedal 10. At this time, even if the joint pin 11 is erroneously inserted from the inside of the vehicle body to the outside of the vehicle body, the first folded piece 11e comes into contact with the side surface of the brake pedal 10 as shown in FIGS. To prevent complete insertion. Accordingly, the joint pin 11 is inserted from the outside of the vehicle body to the inside of the vehicle body, and the split pin insertion hole 11b is positioned on the vehicle body inner side. Even when the joint pin 11 is correctly inserted from the outside of the vehicle body to the inside of the vehicle body in this way, the second folded piece 11f of the joint pin 11 is in the normal position (below the insertion hole 12c of the U-shaped connector 12). If not, complete insertion of the joint pin 11 is prevented. That is, as shown in FIG. 16, when the second folded piece 11f is positioned behind the insertion hole 12c of the U-shaped connector 12, the deflection amount L1 of the first folded piece 11e is equal to the upper peripheral width W3. Since it is smaller, the first folded piece 11e abuts against the side surface portion 12a of the U-shaped connector 12 to prevent the joint pin 11 from being completely inserted. In addition, as shown in FIG. 17, when the second folded piece 11 f is positioned above the insertion hole 12 c of the U-shaped connector 12, the first folded piece 11 e comes into contact with the side surface of the brake pedal 10. Thus, the complete insertion of the joint pin 11 is prevented. Further, as shown in FIG. 18, when the second folded piece 11f is positioned in front of the insertion hole 12c of the U-shaped connector 12, the deviation amount L2 of the second folded piece 11f is the front and rear peripheral width W1. Since it is smaller, as shown in FIG. 19, the second folded piece 11 f abuts against the side surface portion 12 a of the U-shaped connector 12 to prevent complete insertion of the joint pin 11. Accordingly, in the joint pin 11, the first folded piece 11e is positioned behind the insertion hole 12c of the U-shaped connector 12, and the second folded piece 11f is positioned below the insertion hole 12c of the U-shaped connector 12. In this state, it will be completely inserted. The same applies to the case where the joint pin 11 is erroneously inserted from the inside of the vehicle body to the outside of the vehicle body. However, when the second folded piece 11f is positioned above the insertion hole 12c of the U-shaped connector 12, the first folded piece 11e does not contact the side surface of the brake pedal 10, but the second folded piece 11f. Since the deflection amount L2 of the folded piece 11f is smaller than the upper peripheral width W3, the second folded piece 11f comes into contact with the side surface portion 12a of the U-shaped connector 12 to prevent complete insertion of the joint pin 11.

  Finally, as shown in FIG. 13, the split pin 16 is inserted into the split pin insertion hole 11 b of the joint pin 11, and the tip of the split pin 16 is bifurcated so as not to fall off the joint pin 11. At this time, since the split pin insertion hole 11b is positioned on the inner side of the vehicle body, the split pin 16 is always positioned on the inner side of the vehicle body. Therefore, it is possible to avoid the split pin 16 from touching the passenger's foot of the motorcycle 1.

  Here, the assembly work of the brake pedal 10 is completed.

  In this way, the brake pedal 10 can be assembled simply by connecting the brake pedal 10 and the U-shaped connector 12 with the joint pin 11 and inserting the split pin 16 through the joint pin 11. Moreover, since the insertion direction of the joint pin 11 is restricted, it is not necessary to take great care so that the split pin 16 is positioned on the inner side of the vehicle body. Accordingly, the brake pedal 10 can be easily assembled as compared with the conventional structure using the split pin 16 and the conventional structure requiring the rotation of the master cylinder 13.

  Further, an extended piece 11d having folded pieces 11e and 11f may be welded to a circular flange portion 11c such as a conventional joint pin 11. In this case, the joint pin 11 provided with the insertion direction restricting means (first and second folded pieces 11e, 11f) can be easily obtained by diverting the conventional joint pin 11.

  Further, in the motorcycle 1 to which the brake pedal 10 is assembled in this way, the displacement amount L2 of the second folded piece 11f is slightly larger than the lower peripheral width W2, so that the joint pin is accompanied by the swing of the brake pedal 10. Even if 11 is about to rotate, as shown in FIG. 20, the second folded piece 11 f comes into contact with the outer peripheral edge of the side surface portion 12 a of the U-shaped connector 12 to allow the joint pin 11 to rotate only slightly. As a result, the rotation of the joint pin 11 can be suppressed.

  Moreover, as shown in FIGS. 4 and 5, the second folded piece 11f does not protrude into the inner space of the U-shaped connector 12 (the space sandwiched between the pair of side surface portions 12a and 12a). A situation that affects the swinging range of the pedal 10 can be avoided.

  When replacing the brake pedal 10, first, the split pin 16 is extracted from the joint pin 11, the joint pin 11 is extracted from the brake pedal 10 and the U-shaped connector 12, and then the old brake pedal 10 is removed. . Next, a new brake pedal 10 is attached in the reverse procedure. Here, the replacement work of the brake pedal 10 is completed.

  In this way, the brake pedal 10 can be replaced only by inserting and removing the joint pin 11 and the split pin 16. Therefore, the brake pedal 10 can be easily replaced as compared with the known technique 1 involving the removal work of the master cylinder 13 and the brake hose 17.

  In the above-described embodiment, the motorcycle 1 employing the U-shaped connector 12 has been described. However, the rear end portion 10c of the brake pedal 10 has a U-shape and the connector is fitted to the rear end 10c (for example, a block). It is also possible to make it.

  The present invention can be widely applied to various types of motorcycles such as road sports (European type), American type, offloader, dual-purpose, and motocrosser.

1 is a right side view of a motorcycle. 1 is a front view showing an embodiment of a brake pedal assembly structure according to the present invention. It is a perspective view which shows the principal part of the brake pedal assembly | attachment structure shown in FIG. It is a rear view which shows one Embodiment of the brake pedal assembly structure which concerns on this invention. FIG. 5 is an F arrow view of the brake pedal assembly structure shown in FIG. 4. It is a perspective view of a U-shaped connection tool. It is a front view of a U-shaped coupling tool. It is a perspective view of a joint pin. It is an A arrow directional view of the joint pin shown in FIG. FIG. 10 is a B arrow view of the joint pin shown in FIG. 9. It is a front view which shows 1 process of the assembly | attachment operation | work of a brake pedal. It is a top view (sectional view by the EE line of Drawing 11) showing the next process of the work of attaching a brake pedal. It is a rear view (G arrow view of FIG. 12) which shows the further next process of the assembly | attachment operation | work of a brake pedal. It is a rear view which shows the 1st pattern of incorrect insertion of a joint pin. It is sectional drawing by CC line of FIG. It is a front view which shows the 2nd pattern of the erroneous insertion of a joint pin. It is a front view which shows the 3rd pattern of incorrect insertion of a joint pin. It is a front view which shows the 4th pattern of incorrect insertion of a joint pin. It is sectional drawing by the DD line of FIG. It is a front view which shows the rotation suppression mechanism of a joint pin.

Explanation of symbols

1 …… Motorcycle 10 …… Brake pedal 10c …… Rear end 11 …… Joint pin 12 …… U-shaped connector (connector)
13 …… Master cylinder 15 …… Push rod 12a …… Side portion 12b …… Connecting portion 11b …… Split pin insertion hole 11c …… Hang 11d …… Extended piece 11e …… First folded piece (insertion direction restriction) means)
11f ...... second folded piece (insertion direction restricting means, rotation restraining means)
16 …… Split pin LN …… Extension line

Claims (1)

In the brake pedal assembly structure in which a connecting tool is attached to the rear end of the brake pedal via a joint pin, and the push rod of the master cylinder is connected to the connecting tool.
The connector has a U-shape, a pair of side portions into which a rear end portion of the brake pedal is inserted, an insertion hole that is formed in these side portions and into which the joint pin is inserted, and the push rod A connecting portion that is connected to the front end of each other and connects the side surface portions to each other,
The joint pin is provided with a split pin insertion hole for inserting the split pin at one end of the pin main body, and a flange at the other end of the pin main body,
This buttocks
Extending pieces that extend beyond the outer peripheral edge of the side surface in two directions along the side surface of the connector in the rear direction and the lower direction of the vehicle body,
A first folded piece formed by folding the extended piece extending rearward of the vehicle body into the inner space of the connector so as to be positioned on an extension line of the rear end portion of the brake pedal;
A second folded piece formed by folding the extended piece extending downward in the vehicle body into the inner space of the connector so as to engage with the outer peripheral edge of the lower side of the side surface of the connector. Prepared,
The side portion of the first folded piece from the pin main body is larger than the width of the side portion on the lower side, the front side, and the rear side from the insertion hole, and on the upper side of the insertion hole. It is smaller than the width of
The amount of deviation of the second folded piece from the pin main body is larger than the width of the side surface portion below the insertion hole, and the side surface portions on the upper side, the front side, and the rear side from the insertion hole. Brake pedal assembly structure characterized by being smaller than the width of

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