JPH0355003Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a one-motor gearbox used in a power seat for displacing the seat position of a vehicle, for example, by using the driving force of a motor.

(Prior technology) For example, conventional power seats have a front vertical mechanism that changes the front part of the seat cushion in the vertical direction, a rear vertical mechanism that changes the rear part of the seat cushion in the vertical direction, and a rear vertical mechanism that slides the entire seat in the front and back direction. It had a seat track mechanism, etc., and a motor was provided for each mechanism.

(Problems to be Solved by the Invention) In the power seat described above, since a motor is provided for each mechanism, there are problems in that each mechanism requires a large space for arrangement and is also heavy in weight.

This idea was created in view of the above problems.
The purpose is to provide a one-motor gearbox that can selectively supply driving force to each mechanism with one motor, and that can reduce the installation space and weight of each mechanism.

(Means for Solving the Problems) The present invention for solving the above problems includes a single motor, a plurality of drive gears driven by the motor and having teeth carved on their end faces, and a plurality of drive gears that rotate the respective drive gears. A plurality of driven shafts that are movably supported and movable in the axial direction, and a meshing surface that is attached to each of the driven shafts and that can mesh with the teeth of each of the drive gears is carved on an end surface. A plurality of meshing discs and a plurality of push button plates arranged in parallel so as to be movable in the same direction within a plane orthogonal to each of the driven shafts, the engagement surface with the meshing discs having a downwardly movable surface. a first protrusion having a sloped surface at a lower portion that presses a surface of the meshing disk opposite to the meshing surface in the direction of the drive gear and meshing the meshing surface of the meshing disk with the teeth of the drive gear; a plurality of push button plates provided with second protrusions protruding in a direction perpendicular to the moving direction of the push button plates; and a plurality of first springs biasing each of the push button plates in an upward direction. The push button plate is rotatably attached in a plane orthogonal to the protruding direction of the second protrusion, and the tip portion located on the movement path of the second protrusion has a second protrusion that engages with and disengages from the second protrusion. A flexible hook portion is formed, the hook portion being pressed by the second protrusion when the push button plate is pressed down, and having a plurality of hook portions that are pushed in a direction against the biasing force of the second spring. a lock lever; a second spring biasing each lock lever in the direction of engagement with the second protrusion; and a second spring attached to each lock lever so as to form a parallel crank mechanism with the lock lever; and a link for transmitting the lock lever to another lock lever.

(Function) In the one-motor gearbox of the present invention, when the push button plate of the switching section is pressed down, the meshing disk attached to the driven shaft of the driven section moves, and the drive section driven by the motor moves. It meshes with the drive gear, and the driving force of the motor is transmitted to the driven shaft of the driven part. Further, while the push button plate is being pressed down, the plurality of lock levers interlocked by links rotate from the locked state at the pressed position of the push button plate, and the lock between the push button plate and the lock levers is released.

(Example) Hereinafter, an example of the present invention will be described in detail using FIGS. 1 to 4. 1 is a motor which is a driving source;
2 is a drive gear that is attached to the output shaft 1a of the motor 1 and rotates; 3 is an idle gear that is disposed between the drive gear and a front vertical drive gear that will be described later. 4 is a front vertical gear that rotates in mesh with the idle gear; 5 is a seat track drive gear that rotates in mesh with the front vertical drive gear 4; and 6 is a seat track drive gear that rotates in mesh with the seat track drive gear. This is the rear vertical drive gear. One end surface of the front vertical drive gear 4, seat track drive gear 5, and rear vertical drive gear 6 is provided with meshing portions 4a, 5a, and 6a having teeth, respectively, and a hole 4b is provided at the center of the end surface. , 5b, and 6b are drilled, respectively. and an idle gear 3 meshing with the motor 1, a drive gear 3 attached to the output shaft 1a of the motor 1, and the drive gear 3 in sequence;
A gear train consisting of a front vertical drive gear 4, a seat track drive gear 5, and a rear vertical drive gear 6 constitutes a drive section.

7 is a front vertical driven shaft that is inserted into a hole 4b formed in the front vertical drive gear 4 and rotatably supports the front vertical drive gear 4; 8 is a hole formed in the seat track drive gear 5; The seat track driven shaft 9 is inserted into a hole 6b formed in the rear vertical drive gear 6 and rotates the rear vertical drive gear 6. This is a rear vertical driven shaft that is movably supported. The respective driven shafts 7, 8, 9 are provided with meshing portions 4a of the front vertical driven gear 4,
Engagement disks 10, 11, and 12 are provided with engagement surfaces 10a, 11a, and 12a that can engage with the engagement portion 5a of the seat track drive gear 5 and the engagement portion 6a of the rear vertical drive gear 6, respectively. And each meshing disk 10, 11, 12
and the respective driven shafts 7, 8, and 9 constitute driven shafts.

A front vertical push button plate 13, a seat track push button plate 14, and a rear vertical push button plate 15 are provided on the anti-meshing surfaces 10b, 11b, 12b of each of the meshing discs 10, 11, 12.
will be placed. Each push button plate 13, 14, 15
Elongated holes 13a, 14a, and 15a are formed in the elongated holes 13a, 14a, and 15a, and the front vertical driven shaft 7, seat track driven shaft 8, and rear vertical driven shaft 9 are inserted into the elongated holes 13a, 14a, and 15a, respectively. . Anti-meshing surfaces 10b, 11b of the meshing discs 10, 11, 12 of the push button plates 13, 14, 15,
On the end face on the 12b side, meshing discs 10, 11,
Protrusions 13b, 14b, 15b are provided toward the push button plate 12, and push button portions 13c, 14c, 15c are provided at the upper part of each push button plate 13, 14, 15. An inclined surface is formed at the lower part of the projections 13b, 14b, and 15b. Moreover, the protrusions 13b, 14b, 1 of the push button plates 13, 14, 15
At the lower part of the reflective surface of 5b, there are cylindrical projections 13d, 1
4d and 15d are drilled. Push button plate 1
3, 14, 15, each push button plate 1
A compression spring 16 is provided which contacts the lower ends of the push button plates 13, 14, 15 and applies an upward biasing force to the push button plates 13, 14, 15.
Further, below the projections 13d, 14d, 15d protruding from the respective push button plates 13, 14, 15, a front vertical lock lever 18, a seat track lock lever 19, a rear A vertical lock lever 20 is provided. A torsion spring 21 is disposed coaxially with the pin 17, and a hook portion 21a at one end of the torsion spring 21 is disposed coaxially with the pin 17.
is the back part 18 of each lock lever 18, 19, 20
a, 19a, 20a, and the hook portion 21b at the other end is locked to a gear box case (not shown), and the torsion spring 21 is rotated clockwise in FIG. It provides rotational force. A substantially L-shaped lock portion 18b, 19b, 20b is formed at one end of the rotating end of each lock lever 18, 19, 20, and through holes 18c, 19c, 20c are formed at the other end. A link 22 bent to form an inverted S-shape is attached to each lock lever 18,
19, 20 through the through holes 18c, 19c, 20c, each lock lever 18, 19, 20 and link 22 form a parallel crank mechanism, and each lock lever 18, 19, 20 rotates in conjunction with each other. It's summery. And each push button plate 1
3, 14, 15, compression spring 1
6, pin 17, lock lever 18, 19, 20,
The torsion spring 21 and the link 22 constitute a switching section.

Further, FIG. 4 is a perspective view showing a power seat using the one-motor gearbox of the present invention. In the figure, reference numeral 23 indicates a one-motor gearbox of the present invention, and push button portions 13c, 14c, 15c provided at the top of each pushbutton plate 13, 14, 15 protrude from the upper surface of the one-motor gearbox 23. Flexible shafts 24, 25, 26 are provided at both shaft ends of the front vertical driven shaft 7, the seat track driven shaft 8, and the rear vertical driven shaft 9, respectively.
One end of the flexible shaft 24 is connected to a front vertical mechanism 27 that moves the front part of the seat cushion up and down, and the other end of the flexible shaft 25 is connected to a seat slide mechanism 28 that slides the seat back and forth. The other end is connected to a rear vertical mechanism 29 that moves the rear part of the seat cushion up and down.

Next, the operation of the above embodiment will be explained. First, when the motor 1, which is a drive section, is rotated, the front vertical drive gear 4, seat track drive gear 5, and rear vertical drive gear 6, which are gear trains, rotate. Next, the front vertical push button plate 13 in the state shown in FIG. 2 through which the driven shaft to be rotated, for example, the front vertical driven shaft 7 is inserted, is pushed down against the biasing force of the compression spring 16. As it is pushed down, the protrusion 13d of the front vertical push button plate 13 comes into contact with the upper end surface 18d of the lock portion 18b of the front vertical lock lever 18, and the lock lever 18 is moved counterclockwise against the clockwise urging force of the torsion spring 21. direction. This rotation of the lock lever 18 is also transmitted to the other two lock levers 19, 20 through the link 22, and the other two lock levers 19, 20 also rotate in conjunction. At the same time, the anti-meshing surface 10b of the meshing disc 10 also comes into contact with the protrusion 13b of the front vertical push button plate 13, and the meshing portion 4 of the front vertical drive gear 4
Moving in direction a, the meshing disc 10 and the meshing portion 4a
are in mesh with each other, and the rotation of the front vertical drive gear 4 is transmitted to the front vertical driven shaft 7 and further transmitted to the front vertical mechanism 27 via the flexible shaft 24. Then, when the front vertical push button plate 13 is further pushed down, the protrusion 13d will lock the front vertical lock lever 1.
8b comes into contact with the tip 18e of the locking portion 18b.
Then, when the push button plate 18 is further pushed down, the front vertical lock lever 18 is rotated clockwise under the rotation biasing force of the torsion spring 21, and becomes the state shown in FIG. When the force pushing down the front vertical push button plate 13 is released, the push button plate 13 tries to move upward under the biasing force of the compression spring 16, but the protrusion 13d pushes against the lower end surface 1 of the lock portion 18b.
8f, the front vertical push button plate 13 is locked at the pressed position, inhibiting upward movement. Next, the seat track push button plate 14 through which another driven shaft, such as the seat track driven shaft 8, is inserted is pushed down to the depressed position and locked. Then, the meshing disk 11 meshes with the seat track drive gear 5 in the same manner as described above, and the rotational drive of the motor is transmitted to the seat track driven shaft 8. Then, the seat track lever 19 is moved to the protrusion 1.
4b and rotates counterclockwise. At this time, the front vertical lock lever 18 disposed below the aforementioned front vertical driven shaft 7 also rotates counterclockwise to release the locked state of the front vertical push button plate 13 at the pressed position, and the front vertical push button plate 13 is moved upward by the biasing force of the compression spring 16, and the engagement between the engagement disk 10 and the front vertical driven shaft 4 is also released. In other words, the driving force of the motor 1 is switched from the front vertical driven shaft 7 to the seat track driven shaft 8.

According to the above configuration, driving force can be selectively supplied to the front vertical mechanism, seat track mechanism, and rear vertical mechanism using one motor. In addition, since there is only one motor, the installation space is small and the weight is also light.

Note that the present invention is not limited to the above embodiments.
For example, it can be used for automobile power windows and electric mirrors.

(Effects of the Invention) As explained above, according to the present invention, driving force can be selectively supplied to each mechanism, the installation space for each mechanism can be small, and the weight can also be reduced.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention;
The figure is a perspective view of the push button plate in Figure 1 with it unlocked, Figure 3 is a perspective view of the push button plate in Figure 2 with it locked, and Figure 4 is a power seat using the one-motor gearbox of the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Motor, 1a... Output shaft, 2... Drive gear, 3... Idle gear, 4... Front vertical drive gear, 4a, 5a, 6a... Meshing part, 5... Seat track drive gear, 4b, 5b, 6b... Hole, 6
...Rear vertical drive gear, 7...Front vertical driven shaft, 8...Seat track driven shaft, 9
...Rear vertical driven shaft, 10, 11, 12...
Engagement disk, 10a, 11a, 12a... engagement surface, 10b, 11b, 12b... anti-engagement surface, 13...
Front vertical push button plate, 13a, 14
a, 15a...long hole, 13b, 13d, 14b, 1
4d, 15b, 15d...Protrusion, 13c, 14c,
15c...Push button part, 14...Seat track push button plate, 15...Rear vertical push button plate, 16
...Compression spring, 17...Pin, 1
8...Front vertical lock lever, 18a,
19a, 20a...back, 18b, 19b, 20b
...Lock part, 18c, 19c, 20c...Through hole,
18d, 19d, 20d...upper end surface, 18e, 1
9e, 20e...Tip, 18f, 19f, 20f...
Lower end face, 19... Seat track lever,
20...Front vertical lock lever, 21...
Torsion spring, 21a, 21b... hook part, 22... link, 23... 1 motor gear box, 24, 25, 26... flexible shaft,
27...Front vertical mechanism, 28...Seat track mechanism, 29...Rear vertical mechanism.

Claims (1)

[Claims for Utility Model Registration] One motor, a plurality of drive gears driven by the motor and having teeth engraved on their end surfaces, each of the drive gears being rotatably supported and movable in the axial direction. a plurality of driven shafts, a plurality of meshing discs that are attached to each of the driven shafts and have meshing surfaces carved on their end faces that can mesh with the teeth of each of the drive gears; and each of the driven shafts. A plurality of push button plates are arranged in parallel so as to be movable in the same direction in orthogonal planes, and the engagement surface with the engagement disk has a surface opposite to the engagement surface of the engagement disk when moving downward. a first protrusion having a sloped surface at a lower portion that presses the gear toward the drive gear and engages the engagement surface of the engagement disk with the teeth of the drive gear;
a plurality of push button plates provided with second protrusions protruding in a direction perpendicular to the moving direction of the push button plates; a plurality of first springs biasing each of the push button plates in the upward direction; Each push button plate is rotatably attached in a plane perpendicular to the protrusion direction of the second protrusion, and a tip portion located on the movement path of the second protrusion has a hook that can be engaged with and detached from the second protrusion. part is formed,
The hook portion includes a plurality of lock levers that are pressed by the second protrusion and pushed in a direction opposing the biasing force of the second spring when the push button plate is pressed down; a second spring biased in the direction of engagement with the second protrusion; and a link attached to each of the lock levers so as to form a parallel crank mechanism together with the lock levers and transmitting the rotation of one lock lever to the other lock lever. A one-motor gearbox characterized by comprising: