KR20220119967A - Self locking apparatus and power long slide system of seat for vehicle having the same - Google Patents

Abstract

The present invention relates to a self-locking device capable of performing a self-locking function since rotating force is transmitted from a worm gear to a wheel gear but the rotating force is not transmitted from the wheel gear to the worm gear, and a power long slide system of a vehicle seat having the same. The self-locking device may comprise: a driving shaft at an input side; a first worm gear installed in the driving shaft at the input side; a wheel gear self-locked by support in a first direction to enable one side thereof to be engaged with the first worm gear to prevent the first worm gear from being rotated when the wheel gear can be rotated by rotation of the first worm gear but the first worm gear is not rotated; and a driving shaft at an output side connected to a rotational shaft of the wheel gear.

Description

Self locking apparatus and power long slide system of vehicle seat having the same

The present invention relates to a self-locking device and a power long slide system for a vehicle seat having the same. A self-locking device capable of performing a locking function, and a power long slide system for a vehicle seat having the same.

In general, in a conventional long slide device, a straight bar-shaped lower rail that is formed long in the front-rear direction so as to move a vehicle seat forward or backward, and a seat frame are fixed to one side, and can be moved forward and backward along the lower rail. As a configuration including a forward and backward bogie, the lower rail is formed only in a straight section as a whole, so that the vehicle seat can be moved forward and backward in a straight line.

A power long slide device capable of automatically moving a bogie forward and backward using the rotational driving force of the motor by additionally installing a motor and a power transmission device in such a conventional linear long slide device has been developed and used.

However, in this conventional power long slide device, although the rotational driving force of the motor can rotate the gears serving as the wheels of the forward and backward bogie, if no power is applied to the motor, the rotational driving force is not generated, Due to the load of the passenger or vehicle seat or dynamic external force, wheels or gears are easily rotated freely, and due to this idle rotation, the forward/backward bogie moves out of the initially stopped position and moves forward or Or there was a problem, such as a minute backwards.

Accordingly, in the conventional power long slide device, a separate driving device for locking the lower rail and the forward/backward bogie with each other by moving the locking plate forward and backward using a separate additional motor or cylinder while no power is applied to the motor. had to install an additional locking device.

In addition, in the conventional locking device to which such a separate driving device is added, a very large load is concentrated by a load of a passenger or a vehicle seat or a dynamic external force or impact, and the number of parts is greatly increased, Because the capacity of the additional motor or the strength and durability of the locking plate must be designed large, the manufacturing time or manufacturing cost is greatly increased, and the unit price of the product is very high. Because the load is concentrated, it is structurally very weak, and there are many problems such as loosening when used for a long time, such as noise or vibration gradually increasing.

The present invention is intended to solve various problems including the above problems, and can be applied to various devices requiring self-locking, and the rotational driving force is transmitted only in the direction from the worm gear to the wheel gear, By using a worm gear and wheel gear that can be locked, additional power such as a separate motor is unnecessary, and this can reduce the manufacturing cost or manufacturing time of the product, thereby significantly lowering the unit price of the product, and three worm gears are one wheel gear The self-locking performance is very good by firmly supporting the motor in three directions, and after the rotational driving force of the input side drive shaft is distributed to the two subordinate shafts using bevel gear combinations, the three worm gears can rotate the wheel gears at the same time. Therefore, the rotational driving force is amplified and the pinion gear can be driven with a large driving force even with a small force. The lower rail can be formed in an S-shape or a closed curve as a whole in response to the left and right speed deviations of the movable bogie, and 4WD and 2WD driving methods that can be driven smoothly even with a single motor can be implemented, thereby significantly reducing the manufacturing cost. The position of the vehicle seat can be customized not only in the vehicle but also in the autonomous vehicle, so the vehicle seats can be driven while turning in various shapes along the curved movement trajectory. An object of the present invention is to provide a power long slide system for a vehicle seat that can firmly support the load of a passenger and a vehicle seat, comply with safety regulations, and enable comfortable and comfortable automatic turning movement. However, these problems are exemplary, and the scope of the present invention is not limited thereto.

Self-locking device according to the spirit of the present invention for solving the above problems, the input side drive shaft; a first worm gear installed on the input-side drive shaft; It can be rotated by the rotation of the first worm gear, but on the contrary, when the first worm gear is not rotated, it is self-locked with one-way support so that one side is meshed with the first worm gear so that the first worm gear cannot be rotated. ; and an output-side drive shaft connected to the rotation shaft of the wheel gear.

In addition, according to the present invention, a first bevel gear installed on one side of the input-side drive shaft; a first subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft; a second bevel gear installed on the first subordinate shaft and meshed with the first bevel gear; and a second worm gear installed on the first subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with support in two directions.

In addition, according to the present invention, a third bevel gear installed on the other side of the input-side drive shaft; a second subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft; a fourth bevel gear installed on the second subordinate shaft and meshed with the third bevel gear; and a third worm gear installed on the second subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with support in three directions.

Also, according to the present invention, the axial direction of the input-side drive shaft, the axial direction of the first subordinate shaft, and the axial direction of the second subordinate shaft may cross as a whole in a triangular shape.

In addition, according to the present invention, the first worm gear, the second worm gear, and the third worm gear are triangularly or triangularly arranged so as to be in contact with each other in three directions or in three or more directions based on the wheel gear. can

Also, according to the present invention, the input-side driving shaft may be orthogonal to the output-side driving shaft.

On the other hand, a power long slide system for a vehicle seat according to the spirit of the present invention for solving the above problems, a lower rail; a movable bogie having a seat frame fixed to one side and installed on the lower rail to be movable along the lower rail; and a self-locking device installed on the movable cart and self-locking so that the movable cart does not move when the motor installed on the movable cart rotates, but the movable cart can be moved, but when the motor does not rotate on the contrary; may include

In addition, according to the present invention, the lower rail, the rail body; a left rack gear formed on a left inner wall of the rail body along the transport track; and a right rack gear formed on a right inner wall of the rail body along the transport track.

In addition, according to the present invention, the movable bogie, the bogie body to which the motor is fixed to one side; a propulsion shaft connected to the rotation shaft of the motor and rotated; a propulsion shaft bevel gear installed on the propulsion shaft; and a ring gear engaged with the propulsion shaft bevel gear on one side.

Also, according to the present invention, the ring gear may be rotatably installed on a ring gear cover fixed to the bogie body.

In addition, according to the present invention, it is installed on the movable bogie, the left and right speed deviation corresponding device that can correspond to the deviation of the left moving speed and the right moving speed generated when the movable bogie moves in a curve; may further include.

In addition, according to the present invention, the left and right speed deviation response device, the hinge shaft and a hinge shaft installed in the front or rear of the bogie body is hinged to the pivoting body that is installed to turn left or right around the hinge shaft; a left drive shaft rotatably installed on the left side of the revolving body; a left pinion gear connected to the left drive shaft and rotated and engaged with the left rack gear; a right drive shaft rotatably installed on the right side of the revolving body; a right pinion gear connected to the right drive shaft and rotated and engaged with the right rack gear; a drive shaft bevel gear engaged with the other side of the ring gear and installed on the left drive shaft or the right drive shaft; and a differential gear installed between the left drive shaft and the right drive shaft.

In addition, according to the present invention, the self-locking device, the input-side drive shaft connected to the left drive shaft or the right drive shaft; a first worm gear installed on the input-side drive shaft; It can be rotated by the rotation of the first worm gear, but on the contrary, when the first worm gear is not rotated, it is self-locked with one-way support so that one side is meshed with the first worm gear so that the first worm gear cannot be rotated. ; and an output side drive shaft connected to the rotation shaft of the wheel gear and connected to the left pinion gear or the right pinion gear.

In addition, according to the present invention, the self-locking device, the first bevel gear installed on one side of the input-side drive shaft; a first subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft; a second bevel gear installed on the first subordinate shaft and meshed with the first bevel gear; and a second worm gear installed on the first subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with support in two directions.

In addition, according to the present invention, the self-locking device, a third bevel gear installed on the other side of the input-side drive shaft; a second subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft; a fourth bevel gear installed on the second subordinate shaft and meshed with the third bevel gear; and a third worm gear installed on the second subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with support in three directions.

According to some embodiments of the present invention made as described above, it can be applied to various devices requiring self-locking, and the rotational driving force is transmitted only from the worm gear to the wheel gear direction, and self-locking from the wheel gear to the worm gear direction. By using the worm gear and wheel gear, additional power such as a separate motor is unnecessary, and this can reduce the manufacturing cost or manufacturing time of the product, thereby significantly lowering the unit price of the product. The self-locking performance is very good by firmly supporting the support method, and after the rotational driving force of the input side drive shaft is distributed to the two subordinate shafts using bevel gear combinations, the three worm gears can rotate the wheel gear at the same time. By amplifying the driving force, it is possible to drive the pinion gear with a large driving force even with a small power. The lower rail can be formed in an S-shape or closed curve as a whole in response to the left and right speed deviations, and 4WD and 2WD driving methods that can be driven smoothly even with a single motor can be implemented, thereby significantly reducing the manufacturing cost. In an autonomous vehicle, the position of the vehicle seat can be customized, so that the vehicle seats can be driven while turning in various shapes along the curved movement trajectory. Because it can support the load of the vehicle seat firmly, it can comply with safety regulations, and it has the effect of enabling comfortable and comfortable automatic turning movement. Of course, the scope of the present invention is not limited by these effects.

1 is a perspective view illustrating a rotational driving force transmission state of a self-locking device according to some embodiments of the present invention.
FIG. 2 is a perspective view illustrating a self-locking state of the self-locking device of FIG. 1 .
Figure 3 is a front view of the self-locking device of Figure 1;
4 is a plan view of the self-locking device of FIG. 1 .
5 is a perspective view illustrating a movable bogie of a power long slide system for a vehicle seat according to some embodiments of the present disclosure;
6 is an enlarged perspective view illustrating a power long slide system of the vehicle seat of FIG. 5 .
7 is an exploded cross-sectional view illustrating the power long slide system of the vehicle seat of FIG. 6 .
8 is a plan view illustrating a curved driving state of the power long slide system of the vehicle seat of FIG. 6 .

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Examples of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is as follows It is not limited to an Example. Rather, these embodiments are provided so as to more fully and complete the present disclosure, and to fully convey the spirit of the present invention to those skilled in the art. In addition, in the drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description.

The terminology used herein is used to describe specific embodiments, not to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly dictates otherwise. Also, as used herein, “comprise” and/or “comprising” refers to the presence of the recited shapes, numbers, steps, actions, members, elements, and/or groups of those specified. and does not exclude the presence or addition of one or more other shapes, numbers, movements, members, elements and/or groups.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically illustrating ideal embodiments of the present invention. In the drawings, variations of the illustrated shape can be envisaged, for example depending on manufacturing technology and/or tolerances. Accordingly, embodiments of the inventive concept should not be construed as limited to the specific shape of the region shown in the present specification, but should include, for example, changes in shape caused by manufacturing.

Hereinafter, the self-locking device 50 and the power long slide system 100 of a vehicle seat having the same according to various embodiments of the present invention will be described in detail with reference to the drawings.

1 is a perspective view illustrating a rotational driving force transmission state of a self-locking device 50 according to some embodiments of the present invention, and FIG. 2 is a perspective view illustrating a self-locking state of the self-locking device 50 of FIG. 1 , FIG. 3 is a front view of the self-locking device 50 of FIG. 1 , and FIG. 4 is a plan view of the self-locking device 50 of FIG. 1 .

First, as shown in FIGS. 1 to 4 , the self-locking device 50 according to some embodiments of the present invention is a device capable of self-locking without a separate additional power, and largely, a rotational driving force is input. The input-side drive shaft 50a, the first worm gear 51 installed on the input-side drive shaft 50a and rotated together with the input-side drive shaft 50a, and the first worm gear 51 can be rotated by rotation, but vice versa When the first worm gear 51 does not rotate, it is self-locked with one-way support so that one side of the first worm gear 51 cannot be rotated. It may include an output side drive shaft 50b connected to the rotation shaft of the wheel gear 52 .

Accordingly, as shown in FIG. 1 , when the input-side drive shaft 50a rotates the first worm gear 51 , the first worm gear 51 rotates the wheel gear 52 and the output-side drive shaft 50b. Thus, the right pinion gear 35 can be moved forward and backward normally along the right rack gear 13 by rotating the right pinion gear 35 , which will be described later.

Conversely, as shown in FIG. 2 , when the rotational driving force is not transmitted to the input-side drive shaft 50a, the wheel gear 52 cannot rotate the first worm gear 51, so the output-side drive shaft 50b ) and the right pinion gear 35 may be self-locking to be firmly fixed to the right rack gear 13 .

Here, although self-locking is possible only with one first worm gear 51 supporting one wheel gear 52 in one direction, in order to further increase the self-locking function, the worm gear is rotated by the input-side drive shaft 50a. can increase the number of

For example, as shown in FIGS. 1 to 4, the self-locking device 50 according to some embodiments of the present invention includes a first bevel gear 54 installed on one side of the input-side drive shaft 50a, A first subordinate shaft (55) rotatably installed in an axial direction different from the axial direction of the input-side drive shaft (50a), and installed on the first subordinate shaft (55), the first bevel gear (54) The second bevel gear 551 and the first subordinate shaft 55 that mesh with each other are installed on the second side of the wheel gear 52 and mesh with the other side of the wheel gear 52 so that the wheel gear 52 can be self-locked with two-way support. 2 may further include a worm gear 552 .

Accordingly, when the first bevel gear 54 is rotated by the input-side drive shaft 50a, the first subordinate shaft 55 is moved to the second worm gear 552 by the second bevel gear 551 meshed therewith. is rotated together, and the second worm gear 552 may more stably rotate the wheel gear 52 together with the first worm gear 51 .

Conversely, during self-locking, the second worm gear 552 may support the wheel gear 52 together with the first worm gear 51 in two directions to make self-locking more robust.

Here, although self-locking is possible only with the two first worm gears 51 and the second worm gear 552 supporting one wheel gear 52 in two directions, in order to further increase the self-locking function, the input-side drive shaft It is possible to further increase the number of worm gears rotated by (50a).

For example, as shown in FIGS. 1 to 4, the self-locking device 50 according to some embodiments of the present invention includes a third bevel gear 56 installed on the other side of the input-side drive shaft 50a, A second subordinate shaft (57) rotatably installed in an axial direction different from the axial direction of the input-side drive shaft (50a), is installed on the second subordinate shaft (57), and the third bevel gear (56) It is installed on the fourth bevel gear 571 and the second subordinate shaft 57 that mesh with the other side of the wheel gear 52 so that the wheel gear 52 can be self-locked with 3-way support. The physics may further include a third worm gear 572 .

Accordingly, when the third bevel gear 56 is rotated by the input-side drive shaft 50a, the second subordinate shaft 57 is moved by the third worm gear 572 by the fourth bevel gear 571 meshed therewith. is rotated together, and the third worm gear 572 may more stably rotate the wheel gear 52 together with the first worm gear 51 and the second worm gear 552 .

Conversely, when self-locking, the third worm gear 572 supports the wheel gear 52 together with the first worm gear 51 and the second worm gear 552 in three directions to make self-locking more robust. have.

Here, although not shown, self-locking is possible only with the three first worm gears 51, the second worm gear 552 and the third worm gear 572 supporting one wheel gear 52 in three directions. , in order to further increase the self-locking function, the number of worm gears rotated by the input-side drive shaft 50a may be further increased to four or more.

More specifically, for example, as shown in FIGS. 1 to 4 , the axial direction of the input-side drive shaft 50a and the axial direction of the first subordinate shaft 55 and the second subordinate shaft 57 are The axial direction may cross as a whole in a triangular shape, and the first worm gear 51 , the second worm gear 552 , and the third worm gear 572 are 3 based on the wheel gear 52 . It may be arranged in three angles or three angles or more so as to be in contact in multiple directions in three directions or more.

Here, the input-side drive shaft 50a may be formed in a shape perpendicular to the output-side drive shaft 50b to more thoroughly block the driving force in the direction of the worm gear from the wheel gear during self-locking.

Therefore, it is possible to transmit power more stably when power is transmitted using these triangularly intersecting axes and worm gears arranged at three angles. Even when a concentrated concentrated load is applied, it can be firmly supported.

Therefore, the self-locking device 50 of the present invention can be applied to various devices requiring self-locking, and the rotational driving force is transmitted only from the worm gear to the wheel gear direction, and the self-locking device 50 from the wheel gear to the worm gear direction 3 By using the worm gears 51, 552, 572 and the wheel gear 52, additional power such as a separate motor is unnecessary, thereby reducing the manufacturing cost or manufacturing time of the product, thereby significantly reducing the unit price of the product. , three worm gears 51, 552 and 572 firmly support one wheel gear 52 in a three-way support manner, so that self-locking performance is very excellent, and the input side drive shaft 50a using bevel gear combinations After the rotational driving force of ) is distributed to the two subordinate shafts 55 and 57, the rotational driving force is amplified because the three worm gears 51, 552, 572 can rotate the wheel gear 52 at the same time. Even with a small force, the pinion gear 35 can be driven with a large driving force.

5 is a perspective view illustrating the movable bogie 20 of the power long slide system 100 of a vehicle seat according to some embodiments of the present invention, and FIG. 6 is a power long slide system 100 of the vehicle seat of FIG. 5 . It is an enlarged perspective view showing, FIG. 7 is an exploded cross-sectional view of parts showing the power long slide system 100 of the vehicle seat of FIG. 6 , and FIG. 8 is a curved driving state of the power long slide system 100 of the vehicle seat of FIG. It is a flat view.

5 to 8 , the power long slide system 100 for a vehicle seat according to some embodiments of the present invention includes the self-locking device 50 described above, and is largely a lower rail ( 10), and a movable cart 20 and a self-locking device 50 may be included.

Here, the lower rail 10 includes a rail body 11 having a transport track in which at least one curved section is formed in a portion thereof, and a left rack formed on the left inner wall of the rail body 11 along the transport track. It may include a gear 12 and a right rack gear 13 formed on a right inner wall of the rail body 11 along the transport track.

Here, the left rack gear 12 and the right rack gear 13 are formed integrally or separately along the rail body 11 , and also have a curved section along at least a portion along the rail body 11 . can be formed.

However, the left rack gear 12 and the right rack gear 13 are not limited to the rack gear, and various transport devices such as chains, belts, and wires may be applied.

5 to 8 , the movable bogie 20 has a seat frame fixed to the upper side so that the vehicle seat 1 can be moved along a curve, and is curved along the lower rail 10 . To enable this, the lower side may be a kind of upper rail or upper bracket installed on the lower rail 10 .

More specifically, for example, as shown in FIGS. 5 to 8 , the movable bogie 20 is rotated on the bogie body 21 and the bogie body 21 to which the motor M is fixed on one side. The propulsion shaft 22 which is freely installed and is connected to the rotating shaft of the motor M and rotates, the propulsion shaft bevel gear 23 installed on the propulsion shaft 22 and rotated together with the propulsion shaft 22, and the one side of the It may include a ring gear 24 engaged with the propulsion shaft bevel gear 23 and rotated by the propulsion shaft bevel gear 23 .

Here, the ring gear 24 may be rotatably installed on the ring gear cover 25 fixed to the bogie body 21 .

However, the motor M is not necessarily limited only to the drawings, and the propulsion shaft 22 and the ring gear 24 are omitted, and the motor M is directly positioned at the position of the ring gear 24 . The installed direct motor may be applied or may be applied in various forms such as a modular actuator for modularizing various power transmission devices such as the motor M and the bevel gear 23 .

Accordingly, as shown in FIG. 5 , the rotational driving force generated by the motor M rotates the propulsion shaft 22 and the propulsion shaft bevel gear 23 , and the ring gear by the propulsion shaft bevel gear 23 . Since 24 can be rotated, the rotational driving force generated by the motor M can be transmitted to the left-right speed deviation responding device 30 .

5 to 8 , the power long slide system 100 for a vehicle seat according to some embodiments of the present invention is installed on the movable bogie 20, and the movable bogie 20 is It may further include the left and right speed deviation corresponding device 30 that can correspond to the deviation of the left movement speed and the right movement speed generated during the curve movement.

That is, when the movable bogie 20 travels in a curve along the lower rail 10 having a curved movement trajectory, for example, the left moving speed of the movable bogie 20 must be faster than the right moving speed. The movable bogie 20 can be turned right while turning in the right direction, and on the contrary, the right moving speed of the movable bogie 20 must be faster than the left moving speed so that the movable bogie 20 turns to the left while turning in the left direction Since it can be rotated to the left, when the movable bogie 20 is traveling in a curve, a left-right speed deviation phenomenon inevitably occurs in which the moving speed of the left and the moving speed of the right are different from each other.

At this time, the left and right speed deviation response device 30 of the present invention is a device capable of responding to such a left and right speed deviation, for example, with one motor M, the left and right movement speeds are different from each other. It can solve the phenomenon of left and right speed deviation.

More specifically, for example, as shown in FIGS. 5 to 8 , the left and right speed deviation response device 30 is hinged with a hinge shaft 31a installed in the front or rear of the bogie body 21 , A pivoting body 31 installed so as to be capable of turning left or right about the hinge shaft 31a, a left driving shaft 32 rotatably installed on the left side of the pivoting body 31, and the left A left pinion gear 33 that is connected to the drive shaft 32 and rotates and meshes with the left rack gear 12, and a right drive shaft 34 that is rotatably installed on the right side of the revolving body 31; The right pinion gear 35 is connected to and rotated with the right drive shaft 34 and meshes with the right rack gear 13 , and the other side of the ring gear 24 is installed on the left drive shaft 32 . It may include a drive shaft bevel gear 36 and a differential gear 37 installed between the left drive shaft 32 and the right drive shaft 34 .

Accordingly, as shown in FIG. 8 , when the drive shaft bevel gear 36 and the left drive shaft 32 are rotated by the above-described ring gear 24 , the left rack gear 12 is engaged. The left pinion gear 33 can be rotated.

At this time, the rotational driving force of the ring gear 24 is transmitted in the direction of the left pinion gear 33 while the left driving shaft 32 is rotated, and is also transmitted to the differential gear 37 to the right driving shaft 34 . ), and the right pinion gear 35 meshing with the right rack gear 13 may be rotated.

In the differential gear 37, when the sun gear and the planetary gear mesh with each other in the form of a bevel gear, and a difference in rotation speed occurs between the left drive shaft 32 and the right drive shaft 34, the number of rotations of both shafts is adjusted to be curved. can make driving possible.

5 to 8 , the power long slide system 100 for a vehicle seat according to some embodiments of the present invention uses one single motor M, and the motor M rotates. The driving force is transmitted to the front left pinion gear 33, the front right pinion gear 35, the rear left pinion gear 33, and the rear right pinion gear 35, and a total of four The propulsion shaft 22 of the movable bogie 20 is installed at the front and rear of the motor M, respectively, so that the driving force can be transmitted to the pinion gear in a four wheel drive, and the left and right speed Deviation response device 30 may be installed in front and rear of the movable bogie 20, respectively.

However, the present invention is not limited to this four-wheel drive method, and the rotational driving force of the motor M is the front left pinion gear 33 and the front right pinion gear 35 or the rear left pinion gear. (33) and the rear right pinion gear 35, it is also possible to transmit the driving force to the two pinion gears in a two wheel drive method.

Meanwhile, as shown in FIGS. 6 to 8 , in the power long slide system 100 of a vehicle seat according to some embodiments of the present invention, when the rotational power of the motor M is not applied, the left Installed between the left pinion gear 33 and the left drive shaft 32 or between the right pinion gear 35 and the right drive shaft 34 to prevent the pinion gear 33 and the right pinion gear 35 from rotating in vain It may further include a self-locking device (50).

Here, the self-locking device 50 is installed on the movable bogie 20, and when the motor M installed on the movable bogie 20 is rotated, the movable bogie 20 can be moved, but on the contrary When the motor M is not rotated, the movable bogie 20 may be self-locking so as not to move.

More specifically, for example, as shown in FIGS. 1 to 8, the self-locking device 50 includes an input-side drive shaft 50a connected to the left drive shaft 32 or the right drive shaft 34; The first worm gear 51 installed on the input-side drive shaft 50a and the first worm gear 51 can be rotated by rotation of the first worm gear 51, but on the contrary, when the first worm gear 51 is not rotated, one-way support It is self-locking so that the first worm gear 51 cannot be rotated so that one side is connected to the wheel gear 52 meshing with the first worm gear 51 and the rotation shaft of the wheel gear 52, and the left pinion gear ( 33) or may include an output side drive shaft 50b connected to the right pinion gear 35 .

Also, for example, the self-locking device 50 may rotate in an axial direction different from the axial direction of the first bevel gear 54 installed on one side of the input-side drive shaft 50a and the input-side drive shaft 50a. A first subordinate shaft (55) installed in such a way that the second bevel gear (551) and the first subordinate shaft (55) are installed on the first subordinate shaft (55) and mesh with the first bevel gear (54) ) and may further include a second worm gear 552 engaged with the other side of the wheel gear 52 so that the wheel gear 52 can be self-locked with support in two directions.

In addition, for example, the self-locking device 50, the third bevel gear 56 installed on the other side of the input-side drive shaft 50a, and the axial direction of the input-side drive shaft 50a and another axial direction to rotate A second subordinate shaft 57 that is operably installed, a fourth bevel gear 571 installed on the second subordinate shaft 57 and meshed with the third bevel gear 56, and the second subordinate shaft ( 57) and may include a third worm gear 572 that is engaged with the other side of the wheel gear 52 so that the wheel gear 52 can be self-locked with three-way support.

Therefore, according to the self-locking device 50, the left drive shaft 32 or the right drive shaft 34 rotates the worm gears 51, 552 and 572, and the worm gears 51 and 552. In a worm gear that rotates the left pinion gear 33 or the right pinion gear 35 by rotating the pinion drive shaft 53 while the wheel gear 52 engaged with the 572 is rotated, when driving in the wheel gear direction Although the rotational driving force can be transmitted normally, on the contrary, when the rotational power of the motor M is not applied, the rotational force of the left pinion gear 33 or the right pinion gear 35 is the wheel gear 52 . Since the worm gears 51, 552, and 572 cannot be rotated in the direction of the worm gear from the wheel gear at the same time through the The stop position of the movable bogie 20 can be maintained as it is.

Therefore, according to the present invention, the movable bogie 20 capable of automatically driving the curved lower rail 10 and the movable bogie that can be generated during curved driving by using the left and right speed deviation response device 30 . The lower rail can be formed in an S-shape or a closed curve as a whole in response to the left-right speed deviation, and the 4WD and 2WD driving methods, which can be driven smoothly even with one motor (M), can be freely implemented, thereby significantly reducing the manufacturing cost, In an autonomous vehicle as well as a general vehicle, the position of the vehicle seat 1 can be customized, so that the vehicle seat 1 can be driven while turning in various shapes along a curved movement trajectory, and passengers and vehicles Because it can firmly support the load of the seat, safety regulations can be complied with, and a comfortable and comfortable automatic pivoting movement is possible.

Although the present invention has been described with reference to the embodiment shown in the drawings, which is only exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: lower rail
11: rail body
12: left rack gear
13: right rack gear
20: moving bogie
21: bogie body
M: motor
22: propulsion shaft
23: bevel gear
24: ring gear
25: ring gear cover
30: left and right speed deviation response device
31: slewing body
31a: hinge shaft
32: left drive shaft
33: left pinion gear
34: right drive shaft
35: right pinion gear
36: drive shaft bevel gear
37: differential gear
38: slide block
39: plastic bearing
40: chain wiring
50: self-locking device
50a: input side drive shaft
50b: output side drive shaft
51: first worm gear
52: wheel gear
53: pinion drive shaft
54: first bevel gear
55: first slave axis
551: second bevel gear
552: second worm gear
56: third bevel gear
57: second slave axis
571: fourth bevel gear
572: third worm gear
100: Power long slide system of vehicle seat

Claims (15)

input side drive shaft;
a first worm gear installed on the input-side drive shaft;
It can be rotated by the rotation of the first worm gear, but on the contrary, when the first worm gear is not rotated, it is self-locked with one-way support so that one side is meshed with the first worm gear so that the first worm gear cannot be rotated. ; and
an output side drive shaft connected to the rotation shaft of the wheel gear;
Including, self-locking device. The method of claim 1,
a first bevel gear installed on one side of the input-side drive shaft;
a first subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft;
a second bevel gear installed on the first subordinate shaft and meshed with the first bevel gear; and
a second worm gear installed on the first subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with support in two directions;
Further comprising a, self-locking device. 3. The method of claim 2,
a third bevel gear installed on the other side of the input-side drive shaft;
a second subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft;
a fourth bevel gear installed on the second subordinate shaft and meshed with the third bevel gear; and
a third worm gear installed on the second subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with three-way support;
Further comprising a, self-locking device. 4. The method of claim 3,
and an axial direction of the input-side drive shaft, an axial direction of the first subordinate shaft, and an axial direction of the second subordinate shaft cross as a whole in a triangular shape. 4. The method of claim 3,
The first worm gear, the second worm gear, and the third worm gear are triangularly or triangularly arranged so as to be in contact with each other in three directions or in three or more directions based on the wheel gear. The method of claim 1,
and the input-side drive shaft is orthogonal to the output-side drive shaft. lower rail;
a movable bogie having a seat frame fixed to one side and installed on the lower rail to be movable along the lower rail; and
a self-locking device installed on the movable bogie and self-locking so that the movable bogie is not moved when the movable bogie can be moved when the motor installed on the movable bogie is rotated, but on the contrary, when the motor does not rotate;
A power long slide system for a vehicle seat comprising a. 8. The method of claim 7,
The lower rail is
rail body;
a left rack gear formed on a left inner wall of the rail body along the transport track; and
a right rack gear formed on a right inner wall of the rail body along the transport track;
A power long slide system for a vehicle seat comprising a. 9. The method of claim 8,
The movable bogie,
a bogie body to which a motor is fixed to one side;
a propulsion shaft connected to the rotation shaft of the motor and rotated;
a propulsion shaft bevel gear installed on the propulsion shaft; and
a ring gear engaged with the propulsion shaft bevel gear on one side;
A power long slide system for a vehicle seat comprising a. 10. The method of claim 9,
wherein the ring gear is rotatably installed on a ring gear cover fixed to the bogie body. 8. The method of claim 7,
A power long slide system for a vehicle seat, further comprising a device installed on the movable bogie and capable of responding to a deviation between a left moving speed and a right moving speed generated when the movable bogie moves in a curve. 12. The method of claim 11,
The left and right speed deviation corresponding device,
a pivoting body which is hingedly coupled to a hinge shaft installed at the front or rear of the bogie body to enable left or right rotation around the hinge shaft;
a left drive shaft rotatably installed on the left side of the revolving body;
a left pinion gear connected to the left drive shaft and rotated and engaged with the left rack gear;
a right drive shaft rotatably installed on the right side of the revolving body;
a right pinion gear connected to the right drive shaft and rotated and engaged with the right rack gear;
a drive shaft bevel gear engaged with the other side of the ring gear and installed on the left drive shaft or the right drive shaft; and
a differential gear installed between the left drive shaft and the right drive shaft;
A power long slide system for a vehicle seat comprising a. 13. The method of claim 12,
The self-locking device,
an input side drive shaft connected to the left drive shaft or the right drive shaft;
a first worm gear installed on the input-side drive shaft;
It can be rotated by the rotation of the first worm gear, but on the contrary, when the first worm gear is not rotated, it is self-locked with one-way support so that one side is meshed with the first worm gear so that the first worm gear cannot be rotated. ; and
an output side drive shaft connected to the rotation shaft of the wheel gear and connected to the left pinion gear or the right pinion gear;
A power long slide system for a vehicle seat comprising a. 14. The method of claim 13,
The self-locking device,
a first bevel gear installed on one side of the input-side drive shaft;
a first subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft;
a second bevel gear installed on the first subordinate shaft and meshed with the first bevel gear; and
a second worm gear installed on the first subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with support in two directions;
Further comprising, a power long slide system of the vehicle seat. 15. The method of claim 14,
The self-locking device,
a third bevel gear installed on the other side of the input-side drive shaft;
a second subordinate shaft rotatably installed in an axial direction different from the axial direction of the input-side drive shaft;
a fourth bevel gear installed on the second subordinate shaft and meshed with the third bevel gear; and
a third worm gear installed on the second subordinate shaft and engaged with the other side of the wheel gear so that the wheel gear can be self-locked with three-way support;
Further comprising, a power long slide system of the vehicle seat.

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