JP2580802Y2 - Drive mechanism in accelerator interlock device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an accelerator interlock device which is used as a safety device and an anti-theft device for a vehicle to suppress the depression of an accelerator pedal to prevent the vehicle from starting. The present invention relates to a suppressed drive mechanism in an accelerator interlock device.

[0002]

2. Description of the Related Art Conventionally, as a driving mechanism of such an accelerator interlock device, as shown in Japanese Utility Model Laid-Open No. 5-18947, for example, a cylinder is provided on the same plane as the swinging direction of an accelerator lever. The feed screw rod is installed at the same time, and an ascending pipe is screwed to the feed screw rod so as to be movable up and down, a pressing portion is provided at the tip of the ascending pipe, and the feed screw rod is rotated forward and reverse by a motor. Although the type is adopted, the feed screw rod is connected to the output shaft of the motor via a metal gear, so there is a drawback that noise is generated from the meshing part of the gear during operation and it is annoying, When there is no grease between them, the frictional resistance is extremely increased and the specified output cannot be maintained, so that there is a disadvantage that the durability is poor.

[0003]

SUMMARY OF THE INVENTION The present invention is to provide a drive mechanism in an accelerator interlock device which reduces noise generated from a meshing portion of a gear during operation and improves durability. is there.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in consideration of the problem that the metal gears generate noise from meshing portions and are inferior in durability based on the above-mentioned conventional technology. The worm wheel gear formed at the lower end of the threaded rod, the gear part such as the helical gear is composed of a synthetic resin part and a metal part, and the worm gear meshing with the gear part is mounted on the output shaft of the motor. The above-mentioned problem is caused by extremely reducing the noise generated from the meshing portion between the synthetic resin portion and the worm gear, reducing the noise generated from the entire meshing portion, and reducing the frictional resistance between the gear portion and the worm gear. Is not resolved.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 designates an interlocking operation with a door for a vehicle and an anti-theft device (not shown) to prevent the swing of an accelerator lever W. This is a driving mechanism of the accelerator interlock device 2 that enables the motor 3. The motor 3 of the driving mechanism 1 can rotate forward and reverse, and rotates forward and backward in conjunction with opening and closing of the door for getting on and off. The distal end of the output shaft 4 of the motor 3 projects into the gear case 5, and the cylindrical body 6 is projected and fixed vertically above the gear case 5, and a vertically long storage box 7 is integrally formed on the side of the cylindrical body 6. I have.

Reference numeral 8 denotes a feed screw rod rotatably mounted in the cylindrical body 6. A plurality of teeth grooves 9, 9a,... A gear 10 such as a helical gear is formed, and the gear 10 protrudes into the gear case 5 and meshes with a worm gear 11 mounted on the output shaft 4 of the motor 3 so that the output shaft 4 and the feed screw rod are engaged. 8
The screw portion 12 is formed on the outer periphery of the upper portion of the feed screw rod 8 located in the cylindrical body 6 and the feed screw rod 8 is formed.
An ascending pipe 14 in which a screw portion 13 corresponding to the screw portion 12 of the feed screw rod 8 is formed is fitted on the outer peripheral side of the upper portion so as to be vertically movable.

As shown in FIGS. 2 and 3, a reduced diameter portion 15 having a predetermined width is formed in an upper portion on the lower end side of a metal base material 8a constituting the feed screw rod 8, and the periphery of the reduced diameter portion 15 is formed. A knurling process is performed on the surface to integrate and surround the synthetic resin, and at the lower end of the base material 8a, toothing grooves 9, 9a... Thus, the upper portion of the gear portion 10 is formed as the synthetic resin portion 16 and the lower portion is formed as the metal portion 17.

Reference numeral 18 denotes a slide groove formed in the housing box 7 on the side of the cylindrical body 6, and the slide groove 18 is formed in the vertical movement direction of the rising pipe 14 and penetrates into the cylindrical body 6 so as to slide. A moving ring 19 is vertically movable within the groove 18, and a switch rod 20 horizontally protruding from the lower end of the rising pipe 14 is inserted into the moving ring 19, and the switch rod
20 The tip is projected into the storage box 7.

Reference numerals 21 and 21a denote a pair of microswitches disposed on the upper and lower sides of the slide groove 18, respectively. The microswitches 21 and 21a have switch levers 22 and 22a arranged at the upper and lower ends of the slide groove 18, respectively. In addition, the switch levers 22 and 22a are tilted by the switch rod 20 at the upper and lower limits of the rising pipe 14 so as to be in the "ON" state.

In the drawing, reference numeral 23 denotes a cover of the storage box 7;
4, 24a are bearings provided on the upper and lower portions of the gear portion 10, and 25 is a cylindrical body 6.
A cap 26 is removably mounted on the uppermost end of the cylinder 6, and an O-ring 26 is inserted into the outer periphery of the lower end of the rising pipe 14 and slides on the inner peripheral surface of the cylindrical body 6.

A control circuit for stopping the operation of the motor 3
27, input terminals 28 and 28a of motor 3 are relays
Upward side 31 and downside of changeover switch 30 via 29 and 29a
32, the changeover switch 30 is switched to the upside 31 by the lower microswitch 21a, the changeover to the downside 32 is performed by the upper microswitch 21, and the relays 29 and 29a are not shown. It is arranged in the middle of the first and second paths 34 and 34a connecting the DC power supply and the door switch 33, and the door switch 33 is turned on and off.
Is changed to an ascending or descending circuit depending on whether the first and second paths 34 and 34a are energized.

Next, two specific examples of the accelerator interlock device 2 using the drive mechanism 1 will be described. First, the first accelerator interlock device 2 is configured such that the drive mechanism 1 is fixed to a flat bracket 35 by falling down. Then, the cap 25 at the uppermost end of the ascending pipe 14 is removed, the link fitting 36 is mounted, and the link fitting 36 and the swing lever are connected via the link 37.
38, the accelerator lever W of the swing lever 38
A collar 39 is attached to the contact portion with the back surface, and the swing lever 38 is pivotally attached to a mounting portion 40 which is integrally provided on the bracket 35, and the swing lever 38 can swing freely by expansion and contraction of the rising pipe 14. The swing lever 38 swings upward due to the extension of the rising pipe 14, and the collar 39 comes into contact with the back surface of the accelerator lever W to hold the accelerator lever W in the initial state.

Next, the second accelerator interlock device 2 has a swing fulcrum set at an intermediate portion of the arm portion A and installed on an accelerator lever W having an accelerator wire B connected to the end of the arm portion A. L-shaped plate-shaped bracket 41
The drive mechanism 1 is installed in an upright position on the upright portion 42, and the cap 25 at the uppermost end of the rising pipe 14 is removed.
The accelerator interlock device 2 is installed and fixed so that the pusher 43 is arranged at a position opposite to the end of the arm portion A of the accelerator lever W. Accelerator lever W
Is kept in the initial state.

Next, the operation of the driving mechanism in the accelerator interlock device according to the present invention will be described.
When the operating switch for opening and closing the rear door is operated to the open side to turn on the door switch 33, the control circuit
The relays 29 and 29a in 27 are energized and connected to the ascending circuit, the motor 3 starts rotating forward, the output shaft 4 and the worm gear 11
Then, the feed screw rod 8 is rotated via the gear portion 10, and accordingly, the ascending pipe 14 is raised by the screw reduction method to reach the upper limit, and at the same time, the upper micro switch 21 is turned on by the switch rod 20. Then, the ascending side 31 of the changeover switch 30 is switched from the connection side to the ground side, and the descending side 32 is switched from the ground side to the contact side, so that the motor 3 stops, and the extended state of the ascending pipe 14 is maintained.

When the door is closed, the door switch 33 is turned off in conjunction with the operating handle.
When the power supply to 9, 29a is stopped, the motor is switched to the descending circuit, the motor 3 starts rotating in reverse, the ascending pipe 14 descends and reaches the lower limit, and at the same time, the lower micro switch 21a is turned on by the switch rod 20, and The upside 31 of the changeover switch 30 is switched from the ground side to the connection side, and the downside 32 is switched from the connection side to the ground side, and the motor 3 stops.

In this embodiment, the drive mechanism 1 of the accelerator interlock device 2 is operated by turning on and off the door switch 33 by opening and closing the door. However, the present invention is not limited to this type. For example, it is desirable to move the vehicle against the driver's intention, for example, by activating it with a hidden switch installed in the driver's seat, or in the case of trucks, etc., by detecting the presence or absence of inclination with a sensor etc. installed on the carrier. If there is no such switch, a switch may be appropriately installed according to the type of the vehicle so as to lock the accelerator lever W to avoid danger.

[0017] In addition, can improve the completely impossible a safety depression of the accelerator pedal by locking in the highest position of the accelerator lever W, also in order to lock lift the accelerator lever W regardless of the position of the accelerator lever W In addition, the lock can be performed regardless of the position of the accelerator lever W, and safety can be ensured.

A worm gear having a gear portion 10 composed of a synthetic resin portion 16 and a metal portion 17 formed at the lower end of the feed screw rod 8 and having the gear portion 10 mounted on the output shaft 4 of the motor 3.
Because the gear meshes with the gear 11, the meshing part of the gear 10 with the worm gear 11 is inevitably composed of the synthetic resin part 16 and the metal part 17, so that the sound generated from the part when the motor 3 is operated can be reduced and the sound quality can be reduced. From hard sound to soft sound,
The noise from the meshing part can be prevented, and the gear part 10 is composed of the synthetic resin part 16 and the metal part 17, so there is little frictional resistance between the metal and the resin. Therefore, the durability of the drive mechanism 1 can be improved.

[0019]

In short, the present invention provides a knurling process on the peripheral surface of the reduced diameter portion 15 formed on the lower end side of the metal base material 8a constituting the feed screw rod 8 to integrally integrate the synthetic resin. The base material 8a and the synthetic resin material are provided at the lower end of the base material 8a.
Forming a Hagomizo 9, 9a ... engraved with the gear portion 10 a number of Article strides over, the gear portion 10 of the synthetic resin portion 16 and the metal portion 17
, The synthetic resin part 16 and the metal part 17
Are inevitably coincident with each other, and the synthetic resin constituting the synthetic resin portion 16 bites into the irregularities formed by the knurling process applied to the peripheral surface of the reduced diameter portion 15 to form a peripheral portion. from being set, since it is possible to achieve firm of adhesion to the base material 8a, it can be made with the feed screw rod 8 synthetic resin portion 16 with respect to the base material 8a was firmly integrated, by
Of the worm gear 11 on the motor 3 side
The practical effect is extremely large, for example , the feed screw rod 8 can be stably rotated without being generated .

[Brief description of the drawings]

FIG. 1 is a front view of the accelerator interlock device according to the present invention in a state where a lid of a driving mechanism is removed.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an enlarged sectional view of a main part showing a meshing state between a gear portion and a worm gear.

FIG. 4 is a schematic front view showing a relationship between a first accelerator interlock device and an accelerator lever.

FIG. 5 is a schematic front view showing a relationship between a second accelerator interlock device and an accelerator lever.

FIG. 6 is a control circuit diagram of a drive mechanism.

[Explanation of symbols]

 3 Motor 4 Output shaft 8 Feed screw rod 8a Base material 9, 9a ... Tooth groove 10 Gear part 11 Worm gear 15 Reduced diameter part 16 Synthetic resin part 17 Metal part

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B60R 25/00 601 B60K 28/10 B60K 28/12 G10K 11/16

Claims (1)

(57) [Scope of request for utility model registration] 1. A feed screw rod is installed in a cylinder, and a rising pipe that is screwed to the feed screw rod and that can move up and down is attached.
Rotate the feed screw rod forward and reverse with the motor, and hold the accelerator lever in the initial state by extending the rising pipe
Then, a gear portion composed of a synthetic resin portion and a metal portion is formed at the lower end of the feed screw rod, and in the accelerator interlock device in which the gear portion is mounted on the output shaft of the motor, a metal screw constituting the feed screw bar is provided. Shrink formed on the lower end of base metal
Knurling is applied to the circumference of the diameter part and synthetic resin is integrated around the circumference.
And a base material and a synthetic resin material at the lower end of the base material.
The gear section is formed by engraving several tooth grooves extending over the
A drive mechanism in the accelerator interlock device, wherein the gear portion is made up of a synthetic resin portion and a metal portion .