JP4815302B2 - Outer cable end bolt mounting structure on throttle body - Google Patents

Description

  In the present invention, an intake passage passes through the inside of a throttle body that controls the amount of air directed to the internal combustion engine, and the intake passage is controlled to be opened and closed by a throttle valve attached to the throttle valve shaft, and at the end of the throttle valve shaft An outer cable end bolt inserted into the throttle cable and an outer cable end bolt inserted into the throttle cable is connected to the throttle drum arranged on the throttle grip and the accelerator grip operated by the driver by a wire. The present invention relates to an outer cable end bolt mounting structure that is screwed and fixedly arranged.

An outer cable end bolt mounting structure in a conventional throttle body will be described with reference to FIGS.
FIG. 15 is a front view of the throttle body. 16 is a right side view of FIG. It is.
Reference numeral 70 denotes a throttle body having an intake passage 71 penetrating therethrough. A throttle valve shaft 72 that is rotatably supported by the throttle body 70 across the intake passage 71 is a throttle that opens and closes the intake passage 71. A valve 69 is attached and a throttle drum 73 is fixedly screwed to the end of the throttle valve shaft 72.
The throttle drum is disposed in a drum housing recess 75 recessed from the flange surface 74 of the throttle body 70 formed on the left side in FIG. A locking hole 76 and a valve closing locking hole 77 are formed.
The drum housing recess 75 has a first outer cable end bolt insertion screw having a circular hole with one end opening into the drum housing recess 75 and the other end opening outward through the end 78. A hole 79 and a second outer cable end bolt insertion screw hole 80 are formed. In other words, one end of each of the first and second outer cable end bolt insertion screw holes 79 and 80 is opened into the drum housing recess 75 with a circular screw hole, and the other end is opened into the end portion 78 with a circular screw hole.
Then, in the state where the drum housing recess 75 is opened outward, the first outer cable end bolt 81 having a male screw formed on the outer periphery thereof is screwed into the first outer cable end bolt insertion screw hole 79. In the state where the end W1a of the valve opening wire W1 inserted inwardly of the first outer cable end bolt 81 is locked in the valve opening locking hole 76 of the throttle drum 73, the first One end of the outer cable end bolt 81 projecting into the drum housing recess 75 is screwed by the nut 82 toward the side wall of the drum housing recess 75, and the other end projecting outside the first outer cable end bolt 81 is the nut. The screw 83 is screwed toward the end 78.
In addition, a second outer cable end bolt 84 having a male screw formed on the outer periphery thereof is screwed into the second outer cable end bolt insertion screw hole 80 and the inner side of the second outer cable end bolt 84 is inward. In the state where the end W2a of the valve-opening wire W2 inserted through the valve is locked in the valve-opening locking hole 77 of the throttle drum 73, the drum housing recess 75 of the second outer cable end bolt 84 is inserted. One end that protrudes is screwed by the nut 82 toward the side wall of the drum housing recess 75, and the other end that protrudes outside the second outer cable end bolt 84 is screwed by the nut 83 toward the end portion 78.
Thus, the first and second outer cable end bolts 81 and 84 are screwed to the throttle body 70 and fixedly arranged, and the valve opening wire W1 and the valve closing wire W2 are connected via the ends W1a and W2a. Locked to the throttle drum 73.
Then, in the state where the drum storage recess 75 is opened, a bottomed cup-shaped cover 85 is disposed on the flange surface 74 and screwed and fixed, thereby closing the opening of the drum storage recess 75.
Reference numeral 86 denotes an annular packing that surrounds the outer periphery of the drum housing recess 75 and is disposed between the flange surface 74 of the throttle body 70 and the cover 85.
According to the outer cable end bolt mounting structure as described above, when the driver operates an accelerator grip (not shown) to the opening side, the valve opening wire W1 moves the throttle drum 73 counterclockwise in FIG. 15 via the end W1a. As a result, the throttle valve 69 opens the intake passage 71 in response to the accelerator grip opening operation.
On the other hand, when the driver operates the accelerator grip to the closing side, the valve closing wire W2 rotates the throttle drum 73 in the clockwise direction in FIG. 15 via the end W2a, whereby the throttle valve 69 is operated to close the accelerator grip. Accordingly, the intake passage 71 is closed.

The conventional outer cable end bolt mounting structure has the following problems.
First, it is not possible to reduce the number of man-hours for attaching the outer cable end bolt to the throttle body.
That is, the mounting work on the first outer cable end bolt 81 will be described in detail. When the nut 82 on the front end side of the first outer cable end bolt 81 is removed, the male screw of the first outer cable end bolt 81 is The nut 82 is screwed into the front end portion of the first outer cable end bolt 81 in a state where the front end portion protrudes into the drum housing recess 75 and is screwed into the outer cable end insertion screw hole 79. By being worn.
Second, water or the like may enter the drum housing recess 75 through the outer cable end bolt insertion screw hole and the screw spiral of the outer cable end bolt.

  The present invention has been made in view of the above problems, and allows the outer cable end bolt to be attached to the throttle body very easily in a short time, and further allows water to enter from the outer periphery of the outer cable end bolt into the drum housing recess. It is an object of the present invention to provide an outer cable end bolt mounting structure that can be further suppressed.

In order to achieve the above object , the present invention provides a throttle drum provided at the end of a throttle valve shaft that supports a throttle valve that controls the opening and closing of the intake passage of the throttle body, and a wire that connects the throttle drum and the accelerator grip. In the outer cable end bolt mounting structure on the throttle body, the outer cable end bolt through which the outer cable end bolt is inserted is screwed into the outer cable end bolt insertion hole formed in the throttle body. Forming a flange having a flange surface orthogonal to the line, and forming a drum storage recess for storing the throttle drum in the flange surface; and further, one end of the flange surface is in the drum storage recess and the other is in the other end forming a U-shaped groove for each opening on the outer surface of the flange, whereas, Gore The bolt seal member formed of a material, with a semicircular recess hole to form a seal portion to be inserted into the U-shaped groove in the tip, the seal portion, and the flange, on the flange surface A first feature is that the outer cable end bolt insertion hole is formed by a circular hole by the bottom of the U-shaped groove and the semicircular recess hole facing the U-shaped groove, which is sandwiched between the covers to be joined .

According to the present invention, in addition to the first feature, a U-shaped groove formed in the throttle body is formed such that the groove width widens with an inclination angle A from the bottom toward the flange surface, and the seal portion. Is formed such that the thickness corresponding to the groove width widens with an inclination angle B from the tip portion toward the opposite end portion, and the inclination angle A <inclination angle B is satisfied. And

In addition to the first feature, the bolt seal member includes an annular packing that is integrally connected to the seal portion and surrounds the drum housing recess, and the annular packing is connected to the flange surface of the flange. The third feature is that the cover is sandwiched between the flange surface of the cover .

Furthermore, in addition to the first feature, the present invention provides a cutout groove facing the U-shaped groove on the flange surface of the cover, while the seal member is opposite to the semicircular recess hole. According to a fourth aspect of the present invention, a hook that is engaged with the notch groove is formed at the end portion of the first portion .

According to the first feature of the present invention, the first nut is screwed to the tip of the male screw formed on the outer periphery of the outer cable end bolt, and the second nut faces the first nut with a gap. Are screwed and the outer cable end bolt is inserted into a U-shaped groove that opens on the flange surface of the flange integral with the throttle body in a state where the first nut and the second nut are screwed.
According to the above, the front end portion including the first nut of the outer cable end bolt is disposed in the drum housing recess, and the second nut is disposed facing the outer surface of the flange where the U-shaped groove opens.
Next, the bolt seal member is inserted into a U-shaped groove that opens to the flange surface, and the bolt seal member is sandwiched between the flange surface of the flange and the flange surface of the cover.
According to the above, the outer cable end bolt can be inserted into the U-shaped groove of the throttle body without screwing in the state where the first nut and the second nut are screwed to the male screw of the outer cable end bolt. By simply screwing the first nut and the second nut in this inserted state, the outer cable end bolt can be fixed at a predetermined position with respect to the throttle body. Can be installed in time.
Further, since the U-shaped groove opens on the flange surface of the flange integral with the throttle body and no female thread is formed, the U-shaped groove can be formed by casting at the same time as the injection molding of the throttle body, for example, and the manufacturing cost can be reduced.
The outer cable end bolt is disposed in the outer cable end bolt insertion hole forming a circular hole formed by the U-shaped groove of the flange surface and the semicircular recess hole of the bolt seal member, and particularly corresponds to half of the circular hole. Since the semicircular recess hole of the bolt seal member to be made is made of rubber material, the outer cable end bolt insertion hole and the outer cable end bolt can be kept in good contact state, and the outer circumference of the outer cable end bolt is transmitted. Thus, it is possible to effectively prevent water from entering the drum storage recess.

According to the second feature of the present invention, when the bolt seal member is inserted into the U-shaped groove of the flange surface , the semicircular recess hole formed in the tip of the bolt seal member is further provided with the outer cable end. The outer cable end bolt can be strongly pressed toward the outer periphery of the bolt, whereby a better contact state between the outer cable end bolt and the outer cable end bolt insertion hole can be obtained.

Further, according to the third feature of the present invention, the annular packing is integrally formed on the bolt seal member, so that the number of parts and assembly man-hours can be reduced and the flange surface of the cover is in contact with the flange surface of the flange. Even if there is a ring seal, it is possible to check indirectly the ring packing that is placed between both flange faces and cannot be visually checked by visually checking the outer surface of the flange. Can be suppressed.

  Furthermore, according to the fourth aspect of the present invention, when the bolt seal member is disposed on the cover, the hook formed integrally with the bolt seal member is engaged with the notch groove of the cover, so that the half of the bolt seal member is arranged. The circular recess hole can be accurately positioned and fixed, so that when the cover is assembled to the throttle body, the semicircular recess hole of the bolt seal member can be accurately inserted and arranged in the U-shaped groove of the throttle body, and an accurate circular shape An outer cable end bolt insertion hole forming a hole can be formed.

Hereinafter, an embodiment of an outer cable end bolt mounting structure in a throttle body according to the present invention will be described.
The throttle body 1 is formed by the following.
FIG. 1 is a front view of a throttle body. FIG. 2 is a right side view of FIG. 3 is a longitudinal sectional view taken along line AA in FIG. It is.
The throttle body 1 is formed with an intake passage 2 extending therethrough, and the intake passage 2 is attached to a throttle valve shaft 3 that is rotatably supported by the throttle body 1 across the intake passage 2. 4 is opened and closed.
The throttle body 1 is integrally formed with a flange 1a having a flange surface 1a ' perpendicular to the longitudinal axis XX of the throttle valve shaft 3, and the flange surface 1a' is provided with the longitudinal axis. A drum storage recess 5 is formed toward the intake passage 2 side.
Further, a throttle drum 6 is screwed and fixedly arranged at the left end portion in FIG. 3 of the throttle valve shaft. The throttle drum 6 is rotatably arranged in the drum housing recess 5. A valve opening locking hole 66 formed in the throttle drum 6 is a valve closing locking hole 6a.
A first U-shaped groove 7 and a second U-shaped groove 8 are formed along the longitudinal axis XX of the throttle valve shaft 3 in the flange surface 1a ′ .
One end 7a (left end in FIG. 1) of the first U-shaped groove 7 opens to the side wall 5a in the drum housing recess 5, and the other end 7b (right end in the figure) opens to the outer surface 1b of the flange 1a.
Similarly, one end 8a of the second U-shaped groove 8 opens to the side wall 5a in the drum housing recess 5, and the other end 8b opens to the outer surface 1b of the flange 1a.
In other words, the U-shaped grooves 7 and 8 open to the flange surface 1a ' , one ends 7a and 8a open to the side wall 5a in the drum housing recess 5, and the other ends 7b and 8b extend from the outer surface 1b of the flange 1a. Open outward.

Next, the cover 9 that contacts the flange surface 1a ' of the flange 1a and closes the drum housing recess 5 will be described with reference to FIGS.
FIG. 4 is a front view of the cover. 5 is a left side view of FIG. It is.
Cover 9 flange surface 1a of the flange 1a 'has a flange surface 9a which is brought into contact, the flange portion 9b which is formed in parallel with the flange surface 9a, flange surface 1a of the flange 1a' first opened to A first notch groove 10 a and a second notch groove 10 b facing the one U-shaped groove 7, the second U-shaped groove 8 are notched.
The first and second cutout grooves 10a and 10b are formed toward the right from the left end surface 9c of the flange portion 9b in FIG.
Further, 11 is an annular gasket groove which is recessed in the flange surface 9a of the cover 9 so as to surround the drum housing recess 5 which is open to the flange surface 1a 'of the flange 1a.

Next, the bolt seal member 12 will be described with reference to FIGS.
FIG. 6 is a top plan view of the bolt seal member 12. 7 is a left side view of FIG. FIG. 8 is a front view of FIG.
The bolt seal member 12 is formed of an elastic member such as a rubber material, and is inserted into the first seal portion 12 a inserted into the first U-shaped groove 7 of the throttle body 1 and the second U-shaped groove 8. The semicircular recess holes 12a1 and 12b1 that face the first and second U-shaped grooves 7 and 8 are formed at the front end portions 12c of the respective seal portions 12a and 12b.
The rear end portion 12d of the first seal portion 12a is formed with a first hook portion 12e that is engaged with the first notch groove 10a of the cover 9, and the rear end portion of the second seal portion 12b. The portion 12d is formed with a second hook portion 12f that is engaged with the second notch groove 10b.
Reference numeral 12g denotes an annular packing inserted into an annular packing groove 11 formed in the flange surface 9a of the cover 9, and the annular packing 12g includes a first seal portion 12a, a second seal portion 12b, and the like. It is formed integrally. The annular packing 12g may be molded simultaneously with the first and second seal portions 12a and 12b.

And the outer cable end bolt mounting structure in this invention is assembled | attached by the following.
First, as shown in FIGS. 9 and 10, the bolt seal member 12 is disposed on the cover 9.
FIG. 9 is a top plan view. 10 is a left side view of FIG. It is.
The bolt seal member 12 is disposed on the flange surface 9a of the cover 9. At this time, the first hook portion 12e of the first seal portion 12a is engaged with the first notch groove 10a, and the second The second hook portion 12f of the seal portion 12b is engaged with the second notch groove 10b, and the tip end portion 12c including the semicircular recess holes 12a1 and 12b1 is formed from the flange surface 9a in FIG. It is arranged to protrude toward the right.
Further, the annular packing 12g is disposed by being inserted into the annular packing groove 11 formed in the flange surface 9a of the cover 9.
According to the above, since the first hook portion 12e and the second hook portion 12f are engaged with the first cutout groove 10a and the second cutout groove 10b, the first seal portion 12a, The second seal portion 12b can be accurately arranged without dropping on the flange surface 9a, and the mounting workability of the bolt seal member 12 to the cover 9 can be improved.
Moreover, the annular packing 12g can be simultaneously disposed in the annular packing groove 11 by disposing the first and second seal portions 12a and 12b on the flange surface 9a.

Second, an outer cable end bolt is attached to the throttle body 1.
This is shown in FIG.
The first outer cable end bolt 14a has a first nut 15a screwed to the front end side of the bolt 14b, a second nut 15b screwed to the rear end side through a gap, and further the first outer cable end bolt 14a. A valve-opening wire W1 is inserted and arranged inward of the.
In the above state, the first outer cable end bolt 14a is inserted into the first U-shaped groove 7 opened in the flange surface 1a ' of the flange 1a integral with the throttle body 1, and after the insertion, the first nut 15a is screwed toward the side wall 5a of the drum housing recess 5 where one end 7a of the U-shaped groove is open, while the second nut 15b is directed toward the outer surface 1b of the flange 1a where the other end 7b of the U-shaped groove is open. Screwed.
In this state, the end W1a disposed at one end of the valve opening wire W1 is locked in the valve opening locking hole 6a of the throttle drum 6, and the other end of the valve opening wire W1 is shown in FIG. Locked to an accelerator grip (not shown).
In the second outer cable end bolt 16a, a first nut 15a is screwed to the front end side of the bolt 16b, a second nut 15b is screwed to the rear end side through a gap, and further the second outer cable end bolt 16a. A wire W2 for valve closing is inserted and arranged inside the.
In the above state, the second outer cable end bolt 16a is inserted into the second U-shaped groove 8 opened in the flange surface 1a ' of the flange 1a integrated with the throttle body 1, and after the insertion, the first nut 15a is screwed toward the side wall 5a of the drum housing recess 5 where one end 8a of the U-shaped groove is open, while the second nut 15b is directed toward the outer surface 1b of the flange 1a where the other end 8b of the U-shaped groove is open. Screwed.
In this state, the end W2a disposed at one end of the valve closing wire W2 is locked in the valve closing locking hole 6b of the throttle drum 6, and the other end of the valve closing wire W2 is illustrated in FIG. Locked to an accelerator grip (not shown).

In the above, the cover 9 to which the bolt seal member 12 as shown in FIG. 9 is attached is attached to the throttle body 1 to which the first outer cable end bolt 14a and the second outer cable end bolt 16a are attached. Screwed.
This state is shown in FIGS. 12 and 13. FIG. 12 is a plan view and FIG. 13 is a left side view of FIG.
That is, the flange surface 9a of the cover 9 is brought into contact with the flange surface 1a ' of the flange 1a integrated with the throttle body 1, and the cover 9 is screwed by the screw 17 in this state.
According to the above, the first seal portion 12a of the bolt seal member 12 is inserted and disposed in the first U-shaped groove 7 of the throttle body 1, and the semicircular shape of the tip portion 12c of the first seal portion 12a. The recessed hole 12a1 is elastically pressed and arranged on the outer periphery of the first outer cable end bolt 14a.
In other words, a first outer cable end bolt insertion hole 18 forming a circular hole is formed by the first U-shaped groove 7 and the semicircular recess hole 12a1 of the first seal portion 12a. The cable end bolt 14 a is disposed in the first outer cable end bolt insertion hole 18.
The second seal portion 12b of the bolt seal member 12 is inserted and disposed in the second U-shaped groove 8 of the throttle body 1, and a semicircular recess hole in the tip portion 12c of the second seal portion 12b. 12b1 is elastically pressed and arranged on the outer periphery of the second outer cable end bolt 16a. In other words, a second outer cable end bolt insertion hole 19 forming a circular hole is formed by the second U-shaped groove 8 and the semicircular recess hole 12b1 of the second seal portion 12b. The cable end bolt 16 a is disposed in the second outer cable end bolt insertion hole 19.
Further, the annular packing 12g inserted and arranged in the annular packing groove 11 of the cover 9 is disposed in a contracted manner between the flange surface 1a ' of the flange 1a integral with the throttle body 1 and the flange surface 9a of the cover 9.

  The outer cable end bolt is thus installed, and when the driver rotates the accelerator grip in one direction and pulls the valve opening wire W1, the throttle drum 6 rotates counterclockwise in FIG. When the throttle valve 4 opens the intake passage 2 and rotates the accelerator grip in the other direction to pull the valve closing wire W2, the throttle drum 6 rotates clockwise in FIG. The passage 2 is closed.

Here, according to the outer cable end bolt mounting structure according to the present invention, the first and second outer cable end bolts 14a and 16a are connected to the first nut 15a and the second nut 15b, respectively. bolt 14b, a first left throttle body 1 in a state where screwed to 16b, can be inserted into the second U-shaped groove 7 and 8, and the flange surface 9a of the cover 9 of the throttle body 1 and the integral flange 1a The first and second seal portions 12a and 12b of the bolt seal member 12 can be inserted into the first and second U-shaped grooves 7 and 8 of the throttle body 1 by being disposed in contact with the flange surface 1a '. Thus, the first outer cable end made of a circular hole is formed by the semicircular recess hole 12a1 of the first seal portion 12a and the first U-shaped groove 7. Bolt insertion holes 18 are formed, can be placed first outer cable end bolts 14a to the first outer cable end bolt insertion holes 18.
Further, a second outer cable end bolt insertion hole 19 made of a circular hole is formed by the semicircular recess 12b1 and the second U-shaped groove 8 of the second seal portion 12b, and this second outer cable end bolt insertion. A second outer cable end bolt 16 a can be disposed in the hole 19.
According to the above, the workability and time required for mounting the outer cable end bolts 14a, 16a to the throttle body 1 can be remarkably improved, and the maintenance workability of the valve opening and closing wires W1, W2 can be greatly improved. is there.
The outer cable end bolts 14a and 16a are disposed in the first and second outer cable end bolt insertion holes 18 and 19 formed by the semicircular recess and the U-shaped groove of the seal portion. Since 14a and 16a are pressed and arranged by seal portions 12a and 12b formed by an elastic member, the airtightness of the outer cable end bolts 14a and 16a can be maintained satisfactorily, and the drum is provided via the outer periphery of the outer cable end bolts 14a and 16a. The entry of water into the storage recess 5 can be effectively suppressed.

Further, since the first and second seal portions 12a and 12b and the annular packing 12g are integrally formed on the bolt seal member 12, the bolt seal member 12 is mounted on the cover 9, and this cover is attached to the flange of the flange 1a . By abutting the surface 1a ' , the first and second seal portions 12a, 12b can be inserted and disposed in the first and second U-shaped grooves 7, 8, and the annular packing 12g can be disposed on both flange surfaces 1a'. 9a, which can greatly improve the workability, and the seal portions 12a, 12b can be confirmed on the outer surface 1b of the flange 1a . By confirming this, the annular packing 12g Can be confirmed, and forgetting to place the annular packing 12g can be suppressed.

  Further, according to the first and second hook portions 12e and 12f of the bolt seal member 12 being engaged with the first and second cutout grooves 10a and 10b of the cover 9, the first and second seals are provided. The portions 12a and 12b can be securely fixed to the cover 9. When the cover 9 is placed in contact with the throttle body 1, the first and second seal portions 12a and 12b are securely attached to the throttle body 1. The first and second U-shaped grooves 7 and 8 can be inserted and arranged, and the mounting workability can be improved.

Further, as shown in FIG. 14, the first U-shaped groove 7 is formed so that the groove width widens from the bottom 7e toward the flange surface 1a 'with an inclination angle A degree, while the bolt seal member 12 One seal portion 12a is formed such that the thickness corresponding to the groove width widens from the front end portion 12c toward the rear end portion 12d on the opposite side thereof with an inclination angle B degrees, and the inclination angle is set to A degree < When the angle is B degrees, the sealing performance between the first U-shaped groove 7, the first seal portion 12a, the semicircular recess hole 12a1 of the first seal portion 12a, and the first outer cable end bolt 14a can be further improved.
The inclination angle A degree is formed at 7 degrees, for example, and the inclination angle B degree is formed at 13 degrees.
Moreover, it can implement similarly to the 2nd U-shaped groove | channel 8 and the 2nd seal | sticker part 12b.

  The outer cable end bolt mounting structure can also be implemented in a carburetor that adjusts the air-fuel mixture amount and the air-fuel mixture concentration toward the internal combustion engine.

The front view of the throttle body used for the outer cable end bolt mounting structure of the present invention. The right view of FIG. The longitudinal cross-sectional view in the AA line of FIG. The front view of the cover used for the outer cable end bolt mounting structure of the present invention. The left view of FIG. The upper top view of the bolt seal member used for the outer cable end bolt mounting structure of the present invention. The left view of FIG. The front view of FIG. The upper top view in the state where the bolt seal member is arranged in the cover. The left view of FIG. The front view in the state where the outer cable end bolt was attached to the throttle body. The top view in the state where the cover was attached to the throttle body. The left view of FIG. The principal part longitudinal cross-sectional view which shows the relationship between the inclination-angle A degree of a 1st U-shaped groove | channel, and the inclination-angle B degree of a 1st seal | sticker part. The front view explaining a prior art. The right view explaining a prior art.

1 Throttle body
1a Flange
1a 'Flange surface of the flange
2 Intake passage 3 Throttle valve shaft
4 Throttle valve 5 Drum storage recess 6 Throttle drum 7, 8 U-shaped groove
7a, 8a One end of U-shaped groove
7b, 8b The other end of the U-shaped groove 9 Cover 9a Flange surface of the cover 12 Bolt seal member 12a, 12b Seal part 12a1, 12b1 Semicircular recess hole 12c Tip part
12e hook
12g ring packing
14a, 16a Outer cable end bolt 18, 19 Outer cable end bolt insertion hole
XX Longitudinal axis of throttle valve shaft
W1, W2 wire

Claims (4)

A throttle drum (6) is provided at the end of the throttle valve shaft (3) that supports the throttle valve (4) for controlling the opening and closing of the intake passage (2) of the throttle body (1). The throttle drum (6) and the accelerator Outer cable end bolts (14a, 16a) through which wires (W1, W2) connecting the grips are inserted are screwed into outer cable end bolt insertion holes (18, 19) formed in the throttle body (1). In the outer cable end bolt mounting structure on the throttle body,
A flange (1a) having a flange surface (1a ') orthogonal to the longitudinal axis (XX ) of the throttle valve shaft (3) is formed on the throttle body (1) , and the flange surface (1a') A drum housing recess (5) for housing the throttle drum (6) is formed in the flange surface (1a ') , and one end (7a, 8a) is formed in the drum housing recess (5) and the other end ( 7b, 8b) form U-shaped grooves (7, 8) that open to the outer surface (1b) of the flange (1a), respectively .
On the other hand, a bolt seal member (12) formed of a rubber material has a semicircular recess hole (12a1, 12b1) at the tip and is inserted into the U-shaped groove (7, 8) (12a). 12b), and the seal portions (12a, 12b) are sandwiched between the flange (1a) and the cover (9) joined to the flange surface (1a ′) ,
The outer cable end bolt insertion hole (18, 19) forming a circular hole is constituted by the bottom of the U-shaped groove (7, 8) and the semicircular recess hole (12a1, 12b1) facing the U-shaped groove (7, 8). The outer cable end bolt mounting structure in the throttle body. The U-shaped grooves (7, 8) formed in the throttle body (1) are formed so that the groove width widens with an inclination angle A from the bottom (7e) toward the flange surface (1a ') and the seal The portions (12a, 12b) are formed such that the thickness corresponding to the groove width spreads from the tip portion (12c) toward the opposite end (12d) with an inclination angle B, and the inclination angle A <Inclination angle B is set, The outer cable end bolt mounting structure in the throttle body according to claim 1. The bolt seal member (12) includes an annular packing (12g) that is integrally connected to the seal portions (12a, 12b) and surrounds the drum storage recess (5), and the annular packing 1 (2g) flange surface of the flange (1a) and (1a '), characterized by being sandwiched between the flange surface of the cover (9) (9a), the outer cable end bolt mounting structure in the throttle body of claim 1, wherein . On the flange surface (9a) of the cover (9), a notch groove (10a) facing the U-shaped groove (7, 8 ) is formed, while the semicircular recess hole ( The outer cable end bolt mounting on the throttle body according to claim 1 , characterized in that a hook (12e) engaged with the notch groove (10a ) is formed at an end opposite to 12a1, 12b1). Construction.

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