JPH04137230U - Vehicle throttle drum structure - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent damage to the wire when the wire is loosened and to prevent it from falling off from the guide groove. [Structure] A wire 19 is provided on the outer periphery of the drum body 11 to which the throttle shaft is connected to the throttle shaft hole 18.
In a throttle drum structure including a guide groove 20 for guiding the wire 19 and a locking piece 23 provided on the outer peripheral edge of the drum body 11 to restrict floating of the wire 19, the bent tip portion 26 of the locking piece 23 is provided. Both ends 26a, 26b of
is bent outward into a curved shape, and the length L1 from the center P of the drum body 11 to the outer peripheral edge of both side walls 15, 16 of the guide groove 20 is determined from the center P to the tip of the locking piece 23. 26 to the inner end surface 26c was set larger than the length L2.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention opens and closes a throttle valve installed in the intake system of an internal combustion engine. This invention relates to a throttle drum structure for a vehicle.

0002

[Conventional technology]

This conventional throttle drum structure for vehicles is, for example, Those described in Publication No. 90729, Publication No. 56-99029, etc. are known. .

0003 To explain the outline based on Fig. 3, this throttle drum has a slot in the center. A fan-shaped drum body 1 to which a throttle shaft 2 of a torque valve is connected, and the drum body A fastening part 4 provided at the front end of the outer periphery of the wire 3 and having at one end 3a of the wire 3 is fastened. formed between the fixing hole 5 and both side walls 6 and 7 erected on both sides of the outer periphery of the drum body 1. A guide groove 8 is provided. Further, at a predetermined position on the outer peripheral edge of the one side wall 6, A pair of locking pieces 9 and 10 are provided upright. The locking pieces 9 and 10 have a flat plate shape. , the upper edges of the bases 9a and 10a rising from the one side wall 6 are covered with guide grooves 8, and water is It has tip portions 9b and 10b bent in a square direction.

0004 Therefore, when the accelerator pedal is suddenly released, When one end 3a of the wire 3 loosens and rises from the guide groove 8, the wire 3 hits the lower edge of the tips 9b, 10b of each locking piece 9, 10, causing further lifting. is regulated. For this reason, the guide groove 8 of the wire 3, that is, the side walls 6, 7, It is designed to prevent it from falling off.

[0005]

[Problem that the idea aims to solve]

However, in the conventional throttle drum structure, the tips of the locking pieces 9 and 10 Since both side edges 9c and 10c of the end portions 9b and 10b are formed into edge shapes, the front As mentioned above, the wire 3 is loosened and the ends 9b and 10b of each locking piece 9 and 10 are repeatedly When this happens, the wire 3 is not easily damaged by the edge-like side edges 9c and 10c. There is a risk that it will break after long-term use.

[0006] Further, the tip portions 9b, 10b of the locking pieces 9, 10 are far from the outer peripheral edges of the side walls 6, 7. Because it protrudes so much, when one end 3a of the wire 3 rises, both side walls 6 , 7, and easily fall outside.

[0007]

[Means to solve the problem]

The present invention was devised in view of the above-mentioned conventional problems, and in particular, the locking piece can be folded. The side end of the curved tip is bent outward in a curved shape, and the guide is extended from the center of the drum body. The length to the outer periphery of both side walls of the slot is longer than the length from the center to the locking piece. It is characterized by the fact that it is set to listen.

[0008]

[Effect]

According to the present invention having the above structure, the wire is relaxed and the wire end side is in the guide groove. When it lifts up from the circumferential surface, the locking piece reliably prevents it from lifting up beyond a certain level. Needless to say, even if it comes into contact with the locking piece repeatedly during the floating process, the tip of the locking piece will The side of the end is bent in a curved shape, avoiding edge contact and keeping the wire straight. The occurrence of damage, etc. to the device is prevented.

[0009] Moreover, as mentioned above, when the wire loosens and hits the locking piece, the wire One end of the guide groove is restricted from moving outward by the walls on both sides, making it difficult for it to escape from the guide groove. Falling is reliably prevented.

0010

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[0011] 1 and 2 show an embodiment of a vehicle throttle drum structure according to the present invention, The substantially fan-shaped drum body 11 of this throttle drum has a disk portion 12 located at the main part. and a substantially crank which is integrally provided at a substantially 120° angular position on the outer peripheral edge of the disc portion 12. The arms 13 and 14 are shaped like flat plates bent in a shape, and the outer ends of the arms 13 and 14 are suspended. It has arcuate side walls 15 and 16 with a substantially U-shaped cross section. Said disk part A throttle shaft 17 that rotates a throttle valve (not shown) is connected to the center P of 12. A substantially elliptical throttle shaft hole 18 is bored therein. Said both side walls 15,1 6 is formed with an arcuate guide groove 20 for guiding the wire 19 at the bottom between the two. At the same time, the distance from the center P of the disc portion 12 to the outer periphery of both side walls 15 and 16 is The radial length L1 is set to be approximately the same as the radial length of the conventional drum body. .

0012 Further, one side wall 15 has a wire at one end 15a of a circular shape that is folded back. A fastening hole 15b to which the fastening part 21 of the ear 19 is fastened is formed, and one A recess 22 is cut out on the outer peripheral edge near the end 15a, and approximately in the middle of this recess 22 is cut out. A locking piece 23 is provided at the center position. Note that the other side wall 16 has one short end 1 A recess 24 is formed in parallel to the recess 22 on the outer peripheral edge of the recess 6a.

[0013] The locking piece 23 includes a base 25 that is integrally fixed to one side wall 15, and a base 25 that is integrally fixed to the side wall 15. The tip portion 26 is bent horizontally from the outer edge of the guide groove 20 to cover the guide groove 20. This tip portion 26 extends along the longitudinal direction of the guide groove 20 and , both side ends 26a and 26b are bent outward in a curved shape. Also, disc Radial direction from the center P of the portion 12 to the center position of the inner end surface 26c of the distal end portion 26 of the locking piece 24 The length L2 in the direction is longer than the length L1 from the center P to the outer peripheral edge of both side walls 15, 16. It is set small.

[0014] The relationship between the outer diameter d of the wire 19 and L1 and L2 is d≦L1-L2. Each dimension is set so that ≦4d.

[0015] Therefore, according to this embodiment, the accelerator pedal is depressed while the vehicle is accelerating. If the wire 19 is loosened, such as when the wire 19 is suddenly released, the wire 1 9, one end 19a is raised from the guide groove 20 as shown by the dashed line in FIG. , hits the inner end surface 26c of the tip 26 of the locking piece 23 and prevents it from rising any further. be done. Here, such lifting is repeated and the one end portion 19a of the wire is Even if repeatedly contacts the tip 26, both ends 26a and 26b of the tip 26 will not curve. Because the wire is bent into a shape, it avoids the edge contact that occurs in conventional Damage to the portion 19a is reliably prevented.

[0016] Moreover, when the wire 19 loosens and hits the locking piece 23, one end of the wire The portion 19a deforms significantly upward, but the side walls 15 and 16 prevent it from moving outward. Regulated. In particular, the relationship between the outer diameter d of the wire 19 and L1 and L2 is as described above. As a result of the setting, the one end portion 19 of the wire deforms upward from the one side end 26b of the tip portion 26. a is always located between the opposing inner surfaces of both side walls 15 and 16, that is, both side walls 15 , 16 are always held inside without crossing over. Therefore, the guide groove 20 Falling off is reliably prevented.

[0017] Further, in this embodiment, the radial length L1 of the drum body 11 is set to be the same as the conventional one. In addition to providing a notch-like space 27 between both arms 13 and 14, , weight can be reduced while maintaining a smaller overall shape.

[0018] Furthermore, since the entire structure can be formed by press molding, etc., the structure can be simplified, making manufacturing easier. Easier work and lower manufacturing costs can be achieved.

[0019]

[Effect of the idea]

As is clear from the above explanation, the throttle drum structure of the vehicle according to the present invention If the wire is loosened, the locking piece will prevent the wire from lifting up. Of course, the edge of the locking piece against the wire can be avoided. Even during long-term use, wire damage is reliably prevented and durability is improved. I can see the top.

[0020] Moreover, the radial length from the center of the drum body to the outer periphery of both side walls is calculated from the center. Because it is set larger than the radial length from to the locking piece, the It is possible to more reliably prevent the wire from falling out of the guide groove.

[Brief explanation of drawings]

FIG. 1 is a front view of a throttle drum showing an embodiment of the present invention.

FIG. 2 is a perspective view of the throttle drum.

FIG. 3 is a perspective view showing a conventional throttle drum.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11... Drum body, 15, 16... Both side walls, 17... Throttle shaft, 19... Wire, 19a... One end part, 23... Locking piece, 26... Tip part, 26a, 26b... Both side ends, P... Center.

Claims (1)

[Scope of utility model registration request] 1. A drum body having a substantially fan-like shape to which a throttle shaft of a throttle valve is connected at the center, and a wire provided on the outer periphery of the drum body, the end of which guides a wire fixed to the outer periphery of the drum body. In a vehicle throttle drum structure comprising a guide groove and a locking piece provided on the outer peripheral edge of both side walls forming the guide groove, the side end of the bent tip of the locking piece is curved outward. A throttle drum structure for a vehicle, characterized in that the drum body is bent into a shape, and the length from the center of the drum body to the outer peripheral edge of the both side walls is set larger than the length from the center to the locking piece. .