KR102527603B1 - Gear box having clearance compensator, actuator module of vertical horizontal direction change type for differential power and clearance compensator - Google Patents

Abstract

The present invention relates to a gearbox having a clearance compensation device capable of adjusting and compensating for a clearance between gears during power transmission, a differential power horizontal and vertical conversion type actuator module, and a clearance compensation device, comprising: a housing; a first gear rotatably installed in the housing and rotated about a first rotation axis; a second gear rotatably installed in the housing, rotated about a second rotation shaft, and engaged with the first gear; and the first rotating shaft installed in the housing to compensate for the clearance between the first gear and the second gear or adjust the clearance to an appropriate state in order to prevent the first gear and the second gear from loosening. It may include; a clearance compensating device capable of elastically pressing in the direction of the second gear.

Description

A gear box having a clearance compensator, a differential power horizontal and vertical shift type actuator module, and a clearance compensator

The present invention relates to a gearbox having a clearance compensating device, a differential power horizontal/vertical conversion type actuator module, and a clearance compensating device, and more particularly, to a clearance compensating device capable of adjusting and compensating for a clearance between gears during power transmission, and to a seat of a vehicle. is installed on a seat bogie capable of traveling along a rail, and a gearbox having a clearance compensation device capable of performing a power transmission function and a self-locking function, a differential power horizontal and vertical switching type actuator module, and a clearance compensation device will be.

In general, a gear box such as a reducer is a structure that transmits power by using the meshing between gears. In particular, in the assembly structure between a worm gear and a worm wheel gear with severe friction, There could be a lot of play between gears, such as loosening of gear teeth.

The clearance between the gears can hinder the smooth rotation of the gears. For example, if the clearance is too large, contact noise or vibration between parts is generated or the transmission power or variability of torque is greatly increased, and conversely, the clearance If this is too small, there are many problems such as jamming of the reducer or excessive torque required for rotation.

On the other hand, in the conventional long slide device, a seat frame is fixed to one side of a straight rod-shaped lower rail formed long in the front and rear direction so that the vehicle seat can be moved forward or backward, and can be moved forward and backward along the lower rail As a configuration including a forward and backward bogie, the lower rail was formed only in a straight section as a whole, so that the vehicle seat could be moved forward and backward in a straight line.

Since such a conventional straight-moving long slide device cannot avoid the rear wheel house protruding into the interior space, only the lower rail in the forward and backward direction is installed, or the rear wheel house is moved left and right in the middle of moving the vehicle seat forward and backward. A separate left-right direction rail formed long in the left-right direction between the lower rail and the seat frame could be additionally installed to avoid the above.

However, the conventional long slide device for installing such a straight lower rail and straight left and right rails could only be manually operated by the user, and could not simultaneously perform straight manual operation and left and right manual operation. There were problems that were very inconvenient to use because manual operations such as manual operation, left and right manual operation, and forward and backward manual operation could only be performed sequentially.

In addition, conventionally, when the left and right rails are applied to the inside of the seat, since a predetermined space is required in the height direction, the seating height of the seat is increased, and there is a problem in that the seat is a spatial obstacle to the application of other convenient functions.

Meanwhile, as autonomous vehicles are widely used, the recent trend is to develop a vehicle seat that can change its shape in various ways so that the vehicle seat can be positioned in various positions in the indoor space within the range that does not violate existing safety provisions. It is in progress, but in reality, there were problems with the technical configuration of the lower rail and forward and backward bogies that could travel on curved sections.

In particular, in order to drive in these curved sections and height change sections, the rotational speed of the seat bogie in the left and right directions in which the seat of the vehicle is installed must be transmitted differently, as well as the self-locking function so that the seat bogie does not move by itself when the seat bogie is stopped. This was absolutely necessary, but in the prior art, there were problems in that it was very difficult to configure these functions with a small number of parts.

The present invention is to solve various problems, including the above problems, by controlling and compensating for the gap between gears to prevent loosening or jamming, enabling smooth rotation of the gears, A seat bogie that can greatly improve power transmission performance and durability, can prevent noise and vibration from the gearbox, and can run on curved rails without interruption by using a differential structure that responds to left and right rotation deviations. It can be applied to, and maximum stress driving is possible with one motor, so 2WD and 4WD driving method can be implemented when two motors are applied, so the manufacturing cost can be greatly reduced, and worm gear combination, differential gear combination, and planetary gear combination By using a compact structure that reduces the number of parts, it is possible to perform the self-locking function, reducing noise, vibration and clearance of parts, improving parts assembly and durability, and greatly improving the precision and reliability of operation. It is an object of the present invention to provide a gearbox having a clearance compensation device enabling variable speed control and quiet operation by applying a BLDC motor, a differential power horizontal and vertical conversion type actuator module, and a clearance compensation device. However, these tasks are illustrative, and the scope of the present invention is not limited thereby.

A gear box having a clearance compensation device according to the spirit of the present invention for solving the above problems includes a housing; a first gear rotatably installed in the housing and rotated about a first rotation axis; a second gear rotatably installed in the housing, rotated about a second rotation shaft, and engaged with the first gear; and the first rotating shaft installed in the housing to compensate for the clearance between the first gear and the second gear or adjust the clearance to an appropriate state in order to prevent the first gear and the second gear from loosening. It may include; a clearance compensating device capable of elastically pressing in the direction of the second gear.

In addition, according to the present invention, the gap compensating device is installed to be able to move forward and backward in the gap adjusting space of the housing and rotates a first bearing for supporting one end of the first rotation shaft or the other end of the first rotation shaft. a plunger which is in contact with any one of the second bearings supporting rotation and presses the first rotational shaft in the direction of the second gear; a spring installed in the clearance adjusting space of the housing and having an elastic restoring force acting in a direction in which the plunger presses the first bearing or the second bearing; and a plug nut installed in the clearance adjusting space of the housing so that the screw can move forward and backward so that the elastic restoring force of the spring can be adjusted.

Further, according to the present invention, the plunger may include a round head having a spherical surface at least a portion of which is in contact with the first bearing or the second bearing; a stepped portion formed to protrude in an outer diameter direction from the round head portion to support one end of the spring; and a spring support portion extending from the stepped portion and having at least a portion thereof inserted into the winding space of the spring.

In addition, according to the present invention, the plug nut is formed to support the other end of the spring, the nut body having a threaded portion formed on the outer diameter surface; and a fastening groove formed in the nut body so as to rotate the nut body with a wrench or a driver.

In addition, according to the present invention, the clearance compensation device is installed in the housing, is formed in a shape surrounding the first bearing or the second bearing, and the first bearing or the rear clearance is formed so that the front clearance and the rear clearance are formed. It may further include a clearance ring member formed in a ring shape as a whole and spaced apart from the second bearing and having a through hole portion formed therein so that at least a portion of the plunger is inserted to press the first bearing or the second bearing. .

Also, according to the present invention, the first gear may be a worm gear, and the second gear may be a worm wheel gear.

On the other hand, the differential power horizontal and vertical switching actuator module according to the spirit of the present invention for solving the above problems, the gear box having a clearance compensation device; and an actuator that is connected to the gear box and transmits driving force to the gear box by rotating a horizontal driving shaft formed in a horizontal direction as a whole.

In addition, according to the present invention, the gear box is connected to one end of the horizontal drive shaft, a first gear box for converting and transmitting the rotational power of one side of the horizontal drive shaft to a first vertical rotation shaft that is generally vertical ; and a second gear box that is connected to the other end of the horizontal drive shaft and converts and transmits rotational power of the other side of the horizontal drive shaft to a second vertical rotation shaft that is generally vertical.

In addition, according to the present invention, the actuator, the case; a motor installed inside the case and rotating the motor shaft; And installed inside the case, the first rotational speed of the first vertical rotational shaft of the first gearbox and the second rotational speed of the second vertical rotational shaft of the second gearbox can rotate at different speeds. It may include; a differential gear combination installed at one end of the motor rotation shaft so as to be.

In addition, according to the present invention, the differential gear combination, a rotating cage cover freely supported by the rotation relative to the motor (Rotate Cage Cover); a first differential side gear connected to the one end of the rotation shaft of the motor and having a bevel gear shape; at least one differential longitudinal gear having a bevel gear shape such that one side meshes with the first differential side gear; Rotate cage for freely rotationally supporting the differential longitudinal gear with a pin; and a second differential side gear formed at one end of the horizontal drive shaft and having a bevel gear shape to engage with the other side of the differential longitudinal gear.

In addition, according to the present invention, the first gear box, the housing; a worm gear combination freely rotatably installed on one side of the housing using a bearing and connected to the one end of the horizontal driving shaft; and a planetary gear combination freely rotatably installed on the other side of the housing using a bearing and connected to the worm gear combination.

In addition, according to the present invention, the worm gear combination, a worm shaft connected to the one end of the horizontal driving shaft (Worm Shaft); A worm gear formed on the worm shaft; and a worm wheel gear meshed with the worm gear to convert the overall horizontal driving force of the worm shaft into a vertical direction.

In addition, according to the present invention, the planetary gear combination includes a sun gear shaft on one side of which the worm wheel gear is installed; a sun gear formed on the sun gear shaft; at least one planetary gear arranged to engage with the sun gear as a center; an internal gear formed in a ring shape to mesh with the planetary gear; and a carrier shaft freely rotatably supporting the planetary gear and forming the first vertical rotation shaft.

In addition, according to the present invention, the first vertical rotation shaft of the first gear box is a first drive gear or a first drive installed on one side of the seat bogie so that the seat bogie on which the seat of the vehicle is installed can travel along the rail Is connected to the wheel, the second vertical rotation shaft of the second gear box may be connected to the second driving gear or the second driving wheel installed on the other side of the seat bogie.

On the other hand, in the clearance compensation device according to the spirit of the present invention for solving the above problems, a first bearing or A plunger that contacts one of the second bearings for rotationally supporting the other end of the first rotational shaft and presses the first rotational shaft in the direction of a second gear meshing with the first gear; a spring installed in the clearance adjusting space of the housing and having an elastic restoring force acting in a direction in which the plunger presses the first bearing or the second bearing; and a plug nut installed in the clearance adjusting space of the housing so that the screw can move forward and backward so that the elastic restoring force of the spring can be adjusted.

According to some embodiments of the present invention made as described above, it is possible to prevent loosening or jamming by adjusting and compensating for the gap between gears, enabling smooth rotation of the gears, and power transmission performance of the product. and durability can be greatly improved, noise and vibration of the gearbox can be prevented, products that are resistant to shock or external force can be produced, and curved rails can be manufactured by using a differential structure that responds to left and right rotation deviations. It can be applied to a seat bogie that can run without intermittence, and the maximum stress drive is possible with one motor, so the 2WD and 4WD drive method can be implemented when two motors are applied, so the manufacturing cost can be greatly reduced, and the worm gear combination and , By using a differential gear combination and a planetary gear combination, the self-locking function can be performed even with a compact structure that reduces the number of parts, reducing noise, vibration and play of parts, improving parts assembly and durability, and operating It is possible to greatly improve the precision and reliability of the motor, and has the effect of enabling variable speed control and quiet operation by applying a BLDC motor. Of course, the scope of the present invention is not limited by these effects.

1 is an external perspective view showing a gearbox having a clearance compensation device according to some embodiments of the present invention.
FIG. 2 is an exploded perspective view showing a gearbox having a clearance compensating device of FIG. 1 .
3 is a perspective view showing an internal state of the gearbox having the clearance compensating device of FIG. 1;
Figure 4 is a plan view showing a gearbox having a gap compensation device of Figure 1;
5 is a side cross-sectional view showing a gearbox having a clearance compensating device of FIG. 1 .
6 is an external perspective view illustrating a differential power horizontal and vertical switching type actuator module according to some embodiments of the present invention.
FIG. 7 is an exploded perspective view illustrating an actuator, a first gear box, and a second gear box of the differential power horizontal/vertical conversion type actuator module of FIG. 6 disassembled.
FIG. 8 is an exploded perspective view showing actuators of the differential power horizontal/vertical conversion type actuator module of FIG. 7 in detail.
FIG. 9 is a perspective view illustrating an interior of the differential power horizontal/vertical switching type actuator module of FIG. 6 .

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

The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and the following examples may be modified in many different forms, and the scope of the present invention is as follows It is not limited to the examples. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the spirit of the invention to those skilled in the art. In addition, the thickness or size of each layer in the drawings is exaggerated for convenience and clarity of explanation.

Terms used in this specification are used to describe specific embodiments and are not intended to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly indicates otherwise. Also, when used herein, "comprise" and/or "comprising" specifies the presence of the recited shapes, numbers, steps, operations, elements, elements, and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, operations, elements, elements and/or groups.

Hereinafter, embodiments of the present invention will be described with reference to drawings schematically showing ideal embodiments of the present invention. In the drawings, variations of the depicted shape may be expected, depending on, for example, manufacturing techniques and/or tolerances. Therefore, embodiments of the inventive concept should not be construed as being limited to the specific shape of the region shown in this specification, but should include, for example, a change in shape caused by manufacturing.

Hereinafter, a gear box 20 having a clearance compensating device 40 and a differential power horizontal/vertical switching type actuator module 100 according to various embodiments of the present invention will be described in detail with reference to the drawings.

1 is an external perspective view showing a gear box 20 having a play compensating device 40 according to some embodiments of the present invention, and FIG. 2 is a gear box 20 having a play compensating device 40 of FIG. 1 3 is an internal perspective view showing the gearbox 20 having the clearance compensating device 40 of FIG. 1, and FIG. 4 is a gearbox having the clearance compensating device 40 of FIG. 1 ( 20), and FIG. 5 is a side cross-sectional view showing the gearbox 20 having the clearance compensating device 40 of FIG.

First, as shown in FIGS. 1 to 5, the gearbox 20 having the clearance compensating device 40 according to some embodiments of the present invention has a housing 210 and the housing 210 A first gear G1 freely rotatably installed and rotated about a first rotational axis G1a and freely rotated in the housing 210 and rotated about a second rotational axis G2a, A second gear (G2) engaged with the first gear (G1) and installed in the housing 210, to prevent the first gear (G1) and the second gear (G2) from being loosened, the first gear Compensation for play that can elastically press the first rotating shaft (G1a) in the direction of the second gear (G2) to compensate for the play between (G1) and the second gear (G2) or adjust the play to an appropriate state Device 40 may be included.

For example, as shown in FIGS. 2 to 5 , the clearance compensating device 40 is installed in the clearance adjusting space A of the housing 210 to be able to move forward and backward, and It is in contact with either one of a first bearing (B1) for rotationally supporting one end or a second bearing (B2) for rotationally supporting the other end of the first rotational shaft (G1a) to rotate the first rotational shaft (G1a) into the second bearing (B1). A plunger 41 (Plunger) that presses in the direction of the gear (G2) and is installed in the clearance adjustment space (A) of the housing 210, and the plunger 41 is installed in the first bearing (B1) or the first bearing (B1). 2 In the clearance adjustment space (A) of the housing 210 so that the elastic restoring force of the spring 42 (Spring) and the elastic restoring force of the spring 42 can be adjusted in the direction of pressing the bearing (B2) It may include a plug nut 43 (Plug nut) installed to enable forward and backward movement of the screw.

More specifically, for example, as shown in FIG. 3, the plunger 41 is a round head having a spherical surface at least in part contacting the first bearing B1 or the second bearing B2. (41a) and a stepped portion 41b formed to protrude in an outer diameter direction from the round head portion 41a to support one end of the spring 42 and extending from the stepped portion 41b, the spring 42 ) It may include a spring support (41c) formed so that at least a portion is inserted into the winding space of the.

In addition, more specifically, for example, as shown in FIG. 3, the plug nut 43 is formed to support the other end of the spring 42, and the nut body 43a having a threaded portion formed on the outer diameter surface. ) and a tightening groove 43b formed in the nut body 43a so that the nut body 43a can be rotated with a wrench or a driver.

Therefore, as shown in FIGS. 4 and 5, one end of the spring 42 is in contact with the plug nut 43, and the other end of the spring 42 is in contact with the plunger 41, For example, when the plug nut 43 is screwed forward, the spring 42 is compressed and the elastic force can be increased, and the plunger 41 moves the first bearing B1 with strong force due to the increased elastic force. Since it can be pressurized, it is possible to prevent loosening between the screws by reducing the play between the first gear G1 and the second gear G1.

Conversely, for example, when the plug nut 43 is screwed backward, the spring 42 is stretched and the elastic force may be weakened, and the plunger 41 weakens the first bearing B1 by this weakened elastic force. Since the pressure can be applied with force, the gap between the first gear (G1) and the second gear (G1) can be increased to prevent jamming between the screws.

Therefore, by adjusting and compensating for the gap between the gears G1 and G2 by screwing the plug nut 43 forward and backward, it is possible to prevent loosening or jamming, so that the gears G1 and G2 are smooth. It enables rotation, can greatly improve the power transmission performance and durability of the product, and can prevent the occurrence of noise and vibration of the gearbox.

In addition, since the gears G1 and G2 are elastically engaged with each other, even if a strong shock or external force is transmitted, the spring 42 can buffer it, so that a product resistant to shock or external force can be produced.

Meanwhile, as shown in FIGS. 2 to 5 , the clearance compensating device 40 is installed in the housing 210 and has a shape surrounding the first bearing B1 or the second bearing B2. It is formed in a ring shape as a whole to be spaced apart from the first bearing (B1) or the second bearing (B2) so that the front clearance (D1) and the rear clearance (D2) are formed, and at least the plunger (41) It may further include a clearance ring member 44 having a through hole 44a formed so that a portion thereof may be inserted to press the first bearing B1 or the second bearing B2.

Here, in the clearance ring member 44, the front clearance D1 and the rear clearance D2 are sufficiently formed, and the upper and lower inner diameters D are the first bearing B1 or the second bearing B2. It is the same as and can be formed without gap. However, the clearance ring member 44 is not necessarily limited thereto, and clearance may be formed in various directions.

Also, for example, as shown in FIGS. 1 to 5 , the first gear G1 may be a worm gear 222 and the second gear G2 may be a worm wheel gear 223 .

Therefore, according to the present invention, it is applied to a worm / worm wheel gear combination in which frictional wear among gears can occur severely, so that loosening between gears, jamming, noise and vibration occurrence, etc. can be effectively eliminated. It can be prevented. However, the present invention is not limited to only the worm/worm wheel gear combination and can be applied to all types of gear combinations.

Meanwhile, FIG. 6 is an external perspective view of the differential power horizontal/vertical conversion type actuator module 100 having the gearbox 20 according to some embodiments of the present invention, and FIG. 7 is the differential power horizontal/vertical conversion of FIG. 6 It is an exploded perspective view showing the actuator 10 of the type actuator module 100 and the gear box 20, that is, the first gear box 20-1 and the second gear box 20-2 disassembled.

First, as shown in FIGS. 6 and 7 , the differential power horizontal and vertical switching actuator module 100 according to some embodiments of the present invention may include an actuator 10 and a gear box 20 there is.

For example, as shown in FIGS. 6 and 7 , the actuator 10 may be a device including a rotary device for rotating a horizontal drive shaft D formed in a horizontal direction as a whole and differential power transmission devices.

In addition, for example, as shown in FIGS. 6 and 7, the gear box 20 is connected to the left end of the horizontal drive shaft D, and transmits the rotational power of the left side of the horizontal drive shaft D to the vertical direction as a whole. It is connected to the right end of the first gear box 20-1 and the horizontal drive shaft D, which converts and transmits the direction to the first vertical rotation shaft D1, which is the direction, and the rotational power of the right side of the horizontal drive shaft D It may include a second gear box 20-2 that converts and transmits the direction to the second vertical rotation axis D2, which is a generally vertical direction.

Here, as shown in FIGS. 6 and 7, the first vertical rotation shaft of the first gearbox 20-1 allows the seat bogie 1 on which the seat of the vehicle is installed to travel along the rail R (D1) is connected to the first driving gear (W1) or the first driving wheel installed on one side of the seat bogie (1), the second vertical rotation shaft (D2) of the second gear box (20-2) may be connected to the second driving gear W2 or the second driving wheel installed on the other side of the seat bogie 1.

As shown in FIG. 6, the first drive gear W1 and the second drive gear W2 are meshed with a rack gear RG installed on one side of the rail R to seat the bogie. (1) can be made possible.

Therefore, the differential power horizontal and vertical switching type actuator module 100 of the present invention differentially separates the horizontal power generated in the horizontal direction as a whole into left and right sides, so that even in the curved section or height conversion section of the rail R, the third It may correspond to the rotational speed deviation of the first drive gear W1 and the second drive gear W2, that is, the left-right speed deviation.

FIG. 8 is an exploded perspective view showing the actuator 10 of the differential power horizontal-vertical switching type actuator module 100 of FIG. 7 in detail.

As shown in FIG. 8, the actuator 10 of the differential power horizontal/vertical switching type actuator module 100 according to some embodiments of the present invention has a horizontal drive shaft D formed in a horizontal direction as a whole between them. The first gear box 20-1 and the second gear box 20-1 are integrally configured, and the first gear box 20-1 and the second gear box 20- 2) as a device for operating, a case 11, installed inside the case 11, and a motor 12 for rotating the motor rotation shaft 121, installed inside the case 11, The first rotational speed of the first vertical rotational shaft D1 of the first gearbox 20-1 and the second rotational speed of the second vertical rotational shaft D2 of the second gearbox 20-2 are A differential gear combination 13 installed at one end of the motor shaft 121 to rotate at different speeds and a motor cover 14 sealing the case 11 may be included.

Here, for example, as shown in FIG. 8, the motor rotational shaft 121 may have one end connected to the differential gear combination 13 and the other end forming the other end of the horizontal drive shaft D. And, it may be a flexible wire made of a flexible material to alleviate twisting or bending of both ends.

Further, for example, the motor 12 may be a brushless DC electric motor (BLDC) motor having a hollow type in which a drive shaft passes through the center and capable of variable speed control. However, it is not necessarily limited thereto and various types of motors may all be applied.

More specifically, for example, as shown in FIG. 8, the differential gear combination 13 includes a rotate cage cover 131 (Rotate Cage Cover) freely supported for rotation with respect to the motor 12; A first differential side gear 132 (Differential Side Gear) connected to the one end of the motor rotational shaft 121 and having a bevel gear shape, and one side of the bevel gear shape to mesh with the first differential side gear 132 At least one differential longitudinal gear 133 (Differential Longitudinal Gear), formed in a shape surrounding the differential longitudinal gear 133, and rotation of the differential longitudinal gear 133 with a pin (P) A second differential side gear having a bevel gear shape to form a freely supported rotate cage 134 and the one end of the horizontal drive shaft D, and mesh with the other side of the differential longitudinal gear 133 ( 135) may be included.

That is, as shown in FIGS. 6 to 8 , the actuator 10 of the differential power horizontal/vertical switching type actuator module 100 according to some embodiments of the present invention is a single motor 12. The first vertical rotation shaft D1 of the gearbox 20-1 and the second vertical rotation shaft D2 of the second gearbox 20-2 are driven, and the curved section of the rail R The differential gear combination 13 is provided in the actuator 10 so that the first rotational speed of the first vertical rotational shaft D1 and the second rotational speed of the second vertical rotational shaft D2 rotate at different speeds. can be installed

Therefore, the rotational driving force of the motor rotation shaft 121 can be directly transmitted to the first differential side gear 132, but the second differential side gear ( 135) may be indirectly transmitted to, whereby, in normal times, the rotational speed of the left end of the horizontal drive shaft D and the rotation of the right end of the horizontal drive shaft D using the differential gear combination 13 Although the speed is the same, if the rotational speed of the left end of the horizontal drive shaft D stops at zero due to an external force in the curved rail R, on the contrary, the right end of the horizontal drive shaft D The rotational speed of the vehicle is doubled, enabling curved driving without stressing the parts.

Therefore, according to the present invention, the curved rail R can be applied to the seat bogie 1 capable of automatically running, and the 2WD differential drive can be implemented even with one motor, so the manufacturing cost can be greatly reduced. . In addition, 4WD differential drive is also possible with two motors.

Here, as shown in FIGS. 2 to 8 , the first gear box 20-1 of the differential power horizontal and vertical switching type actuator module 100 according to some embodiments of the present invention is a housing 210 ) and bearings B1 and B2 are freely installed on one side of the housing 210 and connected to the one end of the horizontal drive shaft D. A worm gear combination 220 and a bearing B3 A planetary gear combination 230 rotatably installed on the other side of the housing 210 using (B4) and connected to the worm gear combination 220 may be included.

For example, as shown in FIGS. 2 to 8 , the worm gear combination 220 includes a worm shaft 221 connected to the one end of the horizontal drive shaft D, and the worm shaft 221 Worm wheel gear 223 (Worm Wheel Gear) may be included.

Here, the worm gear 222 is a widened worm gear or a long worm gear with an increased meshing area to perform a self-locking (anti-reversal) function by increasing the reduction ratio, or hourglass worm gear, The worm wheel gear 223 may be a widened worm wheel gear or a concave worm wheel gear.

Therefore, the driving force can be transmitted from the worm gear 222 to the worm wheel gear 223 using the worm gear 222 and the worm wheel gear 223 having a very large reduction ratio, but on the contrary, the worm wheel gear ( 223), since the driving force is not transmitted to the worm gear 222, the self-locking function is possible.

In addition, for example, as shown in FIGS. 2 to 8, the planetary gear combination 230 of the differential power horizontal and vertical conversion type actuator module 100 according to some embodiments of the present invention has the worm wheel on one side The sun gear shaft 231 on which the gear 223 is installed, the sun gear 232 formed on the sun gear shaft 231, and the sun gear 232 as the center At least one planetary gear 233 (Planetary Gear) disposed to mesh with, an internal gear 234 formed in a ring shape to mesh with the planetary gear 233, and the planetary gear It may include a carrier shaft 235 that freely rotatably supports the terry gear 233 and forms the first vertical rotation axis D1.

Here, three planetary gears 233 may be triangularly arranged around the sun gear 232 . However, it is not necessarily limited thereto, and the planetary gears 233 may be arranged in multiple ways, such as 4, 5, 6 or more, with the sun gear 232 as the center.

The planetary gear combination 230 also uses the sun gear 232 as an input and fixes the internal gear 234 so that the self-locking function can be performed by increasing the reduction ratio, and the carrier shaft 235 ) as an output may be a planetary gear combination.

For example, when the above-mentioned reduction ratio of the worm gear combination 220 is applied as 10:1 and the reduction ratio of the planetary gear combination 230 is applied as 3.63:1, the total reduction ratio is 36.3:1, which is very large. Because of this, reverse driving is not possible, so the self-locking function can be performed. In particular, even if the driving force to the motor 12 is stopped as the twist angle of the worm gear combination 220 is within 7 degrees, the seat bogie 1 The stopped position can be maintained very firmly even without a separate brake device.

On the other hand, as shown in FIGS. 2 to 8, the differential power horizontal and vertical switching actuator module 100 according to some embodiments of the present invention, the power of the horizontal drive shaft (D) to the first gear box It may further include a coupling device 30 installed between the actuator 10 and the first gearbox 20-1 so as to be transmitted to (20-1).

More specifically, for example, the coupling device 30 includes a first coupling dog 31 (Coupling Dog) installed at the one end of the horizontal driving shaft D, and the first coupling dog ( 31) and meshed with the flexible coupler 32 (Flexible Coupler) made of a soft elastic material to mitigate impact and the flexible coupler 32, and the first gearbox 20-1 It may include a second coupling dog 33 connected to the worm shaft 221 of the.

Therefore, the power of the horizontal driving shaft D can be transmitted to the first gearbox 20-1 using the coupling device 30, and the coupling device 30 can be easily disassembled when necessary. parts can be replaced or repaired.

FIG. 9 is a perspective view showing the inside of the differential power horizontal/vertical switching type actuator module 100 of FIG. 6 .

As shown in FIG. 9, when explaining the operation process of the differential power horizontal and vertical switching type actuator module 100 according to some embodiments of the present invention, first, the motor 12 of the actuator 10 and the By using the differential gear combination 13, the horizontal power generated in the horizontal direction as a whole is differentially separated into left and right sides, so that the first drive gear W1 and the first drive gear W1 and the Power can be transmitted to correspond to the rotational speed deviation of the two drive gears W2, that is, the left-right speed deviation.

Subsequently, for example, when the driving force of the actuator 10 is transmitted to the worm shaft 221 and the worm gear 222 rotates, the worm wheel gear 223 meshed with the worm gear 222 has a large reduction ratio can be rotated

Subsequently, as the sun gear shaft 231 on which the worm wheel gear 223 is installed is rotated, the sun gear 232 can be rotated, and the sun gear ( 232), the carrier shaft 235 forming the first vertical rotational axis D1 may be rotated at a higher reduction ratio while the three planetary gears 233 arranged in a triangle are rotated.

Therefore, it can be applied to the seat bogie 1 that can automatically drive the curved rail R, and the maximum stress drive is possible with one motor 12, so that 2WD and 4WD drive method when two are applied can be implemented, so the manufacturing cost can be greatly reduced, and the differential gear combination 13, the worm gear combination 220, and the planetary gear combination 230 are combined to reduce the number of parts. Even with a compact structure, self By enabling the locking function to be performed, noise, vibration, and clearance of parts are reduced, component assembly and durability are improved, and operation precision and reliability can be greatly improved. Variable speed control and quiet operation by applying a BLDC motor can make it possible.

The differential power horizontal and vertical conversion type actuator module 100 according to some embodiments of the present invention is not necessarily limited to being installed on a seat bogie capable of driving along a rail in which a seat of a vehicle is installed, and driving is It can be applied to all possible types of bogies.

On the other hand, as shown in FIGS. 1 to 9, the present invention may include the above-described clearance compensating device 40 of the gearbox 20, and the configuration and role of the clearance compensating device 40 May be the same as the above-described clearance compensating device 40 of the gear box 20. Therefore, a detailed description thereof will be omitted here.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and 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.

1: seat bogie
G1: 1st gear
G1a: first axis of rotation
G2: 2nd gear
G2a: 2nd axis of rotation
10: actuator
11: case
12: motor
121: motor rotation axis
13: differential gear combination
131 Rotate cage cover
132: first differential side gear
133: differential longitudinal gear
134 Rotate cage
P: pin
135: second differential side gear
14: motor cover
20: gearbox
20-1: 1st gearbox
20-2: 2nd gearbox
D: horizontal drive shaft
D1: first vertical axis of rotation
D2: second vertical axis of rotation
210: housing
220: worm gear combination
221: worm shaft
222: worm gear
223: worm wheel gear
B1, B2, B3, B4: bearings
230: planetary gear combination
231: sun gear shaft
232: sun gear
233: planetary gear
234: internal gear
235: carrier shaft
30: coupling device
31: first coupling dog
32: flexible coupler
33: second coupling dog
W1: first driving gear
W2: second driving gear
40: gap compensation device
41: plunger
41a: round head
41b: stepped portion
41c: spring support
42: spring
43: plug nut
43a: nut body
43b: tightening groove
44: Gap ring member
44a: through hole
D: upper and lower inner diameter
D1: Front Gap
D2: rear play
A: Gap control space
R: rail
RG: rack gear
100: differential power horizontal and vertical switching type actuator module

Claims (7)

A housing, a first gear rotatably installed in the housing and rotated about a first rotational axis, a second gear rotatably installed in the housing, rotated about a second rotational shaft, and meshed with the first gear A gear, and installed in the housing, in order to prevent loosening of the first gear and the second gear, to compensate for the play between the first gear and the second gear or to adjust the play to an appropriate state. a gear box having a clearance compensating device including a clearance compensating device capable of elastically urging one rotational shaft in the direction of the second gear; and
An actuator connected to the gear box and rotating a horizontal driving shaft formed in a horizontal direction as a whole to transmit driving force to the gear box; includes,
The gearbox,
A first gear box connected to one end of the horizontal drive shaft and converting and transmitting rotational power of one side of the horizontal drive shaft to a first vertical rotation shaft that is generally vertical; and
a second gear box connected to the other end of the horizontal drive shaft and converting and transmitting rotational power of the other side of the horizontal drive shaft to a second vertical rotation shaft that is generally vertical;
including,
The first vertical rotation shaft of the first gear box is connected to a first drive gear or a first drive wheel installed on one side of the seat bogie so that the seat bogie on which the seat of the vehicle is installed can run along the rail, The second vertical rotation shaft of the 2 gear box is connected to a second driving gear or a second driving wheel installed on the other side of the seat bogie,
The first gearbox,
By greatly adjusting the reduction ratio of the two gear combinations, reverse driving is impossible, so that the self-locking function can be performed.
a worm gear combination connected to the one end of the horizontal driving shaft; and
A differential power horizontal and vertical conversion type actuator module comprising a; planetary gear combination connected to the worm gear combination. According to claim 1,
The gap compensation device,
It is installed to be able to move forward and backward in the clearance control space of the housing, and is in contact with either a first bearing for rotationally supporting one end of the first rotational shaft or a second bearing for rotationally supporting the other end of the first rotational shaft. A plunger for pressing the first rotational shaft in the direction of the second gear;
a spring installed in the clearance adjusting space of the housing and having an elastic restoring force acting in a direction in which the plunger presses the first bearing or the second bearing;
a plug nut installed in the clearance adjusting space of the housing so that the screw can move forward and backward so that the elastic restoring force of the spring can be adjusted; and
It is installed in the housing, is formed in a shape surrounding the first bearing or the second bearing, and is formed in a ring shape as a whole to be spaced apart from the first bearing or the second bearing so that front clearance and rear clearance are formed, a clearance ring member formed with a through-hole portion through which at least a portion of the plunger is inserted to press the first bearing or the second bearing;
Further comprising, differential power horizontal and vertical switching type actuator module. According to claim 2,
The plunger,
a round head having a spherical surface at least a portion of which is in contact with the first bearing or the second bearing;
a stepped portion formed to protrude in an outer diameter direction from the round head portion to support one end of the spring; and
A spring support portion extending from the stepped portion and formed such that at least a portion thereof is inserted into the winding space of the spring; and
The plug nut,
a nut body formed to support the other end of the spring and having a threaded portion formed on an outer diameter surface; and
a fastening groove formed in the nut body to rotate the nut body with a wrench or a driver;
Including, differential power horizontal and vertical switching type actuator module. delete According to claim 1,
The actuator,
case;
a motor installed inside the case and rotating the motor shaft; and
installed inside the case, so that the first rotational speed of the first vertical rotational shaft of the first gearbox and the second rotational speed of the second vertical rotational shaft of the second gearbox rotate at different speeds a differential gear combination installed at one end of the rotation shaft of the motor;
Including, differential power horizontal and vertical switching type actuator module. delete delete

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