ENGINE ASSEMBLY AND STEERING DEVICE FOR VEHICLES WITH THIS STEERING DEVICE

Abstract

Motor arrangement (100), comprising: a motor (101) with a motor shaft (102) having a large diameter section (103) and a small diameter section (104) extending from one end of the large diameter section (103); a first bearing element (121) which is formed in a hollow shape and is provided on one side of an outer surface of the small-diameter section (104), and whose outer diameter decreases from one side to the other; a second bearing element (122) which is formed in a hollow shape and is provided on the other side of the outer surface of the small diameter section (104), and whose outer diameter increases from one side to the other; a belt roller (110) which is formed in a hollow shape, has a plurality of slots (310) for passing through an inner surface and an outer surface and whose inner surface has a first conical surface (511) which rests on the outer surface of the first bearing element (121) and a second conical surface (512) which rests on the outer surface of the second bearing element; a nut (140) coupled to one end of the small diameter section (104); a first elastic element (131) provided between the nut (140) and the first bearing element (121); and a second elastic element (132) provided between the second bearing element (122) and the large diameter section (103), wherein a first groove (611) is formed on the outer surface of the small-diameter section (104), extending in an axial direction and into which a bearing pin (620) is inserted, and a second groove (612) is formed on the inner surfaces of the first bearing element (121) and the second bearing element (122), extending in the axial direction and into which the bearing pin (620) is inserted.

Description

TECHNICAL AREA

[0001] The present embodiments of the present disclosure relate to an engine arrangement and a steering device containing it of a vehicle, in particular to an engine arrangement which is able to easily adjust belt tension and simplify the engine installation structure and the assembly process in the steering system, and which is able to use the engine for several vehicle models.

[0002] In a structure for transmitting motor torque, a belt and a pulley or roller are often used to transfer the motor's torque to the driven part. Since the belt tension can loosen in this case, it must be maintained to prevent the pulley from slipping.

[0003] In particular, a vehicle's steering device may include a motor for generating torque to assist the driver's steering torque, to steer a wheel in accordance with the driver's steering torque, or to generate a steering response force to improve the driver's steering feel. A general steering device has a structure in which a motor is coupled to a housing eccentrically with respect to a motor shaft, rotates with respect to the housing, and maintains tension on a belt connecting the motor shaft to a pulley or roller. Alternatively, a design may be used in which a belt roller is installed on the outer surface of the belt, the belt is pressed by the belt roller, and the belt tension is maintained.

[0004] However, the eccentric mounting of the motor is difficult to manufacture, as the housing requires a screw hole with a circumferential slot to allow the motor to rotate. Furthermore, it is cumbersome to use a different motor type for each vehicle model, taking into account constraints with peripheral components and varying engine installation space. Additionally, the design with the belt pulley mounted on the outer surface of the belt increases the number of parts and complicates assembly, as it necessitates the inclusion of a belt pulley and motor.

[0005] Publication KR 10 2020 0 100 938 A concerns an electric power steering system known from the prior art. It describes how power steering force can be transmitted precisely without loss or noise, and how vibrations and belt damage are reduced by increasing the belt's contact area on the motor pulley and the main pulley.

[0006] Against this background, embodiments of the present disclosure provide a motor arrangement that is able to easily adjust belt tension and simplify the motor installation structure and the assembly process in the steering system, and that is able to use the motor for several vehicle models, as well as a vehicle steering device with the same.

[0007] In one aspect of the present disclosure, a motor arrangement is provided, comprising a motor with a motor shaft that includes a large-diameter section and a small-diameter section extending from one end of the large-diameter section, a first bearing element formed in a hollow shape and provided on one side of an outer surface of the small-diameter section, the outer diameter of which decreases from one side to the other, a second bearing element formed in a hollow shape and provided on the other side of the outer surface of the small-diameter section, the outer diameter of which increases from one side to the other, a belt pulley formed in a hollow shape, having a plurality of slots for penetration through an inner surface and an outer surface, the inner surface of which has a first conical surface,which rests on the outer surface of the first bearing element, and has a second conical surface which rests on the outer surface of the second bearing element, a nut which is coupled to one end of the small diameter section, a first elastic element which is provided between the nut and the first bearing element, and a second elastic element which is provided between the second bearing element and the large diameter section.

[0008] In another aspect of the present disclosure, a motor arrangement is provided, comprising a motor with a motor shaft having a large-diameter section and a small-diameter section extending from one end of the large-diameter section, a bearing element formed in a hollow shape and provided on an outer surface of the small-diameter section, the outer diameter of which decreases from one side to the other, a belt pulley formed in a hollow shape, having a plurality of slots for penetration of an inner surface and an outer surface, the inner surface of which comprises a conical surface bearing on the outer surface of the bearing element and a stepped region having a diameter that increases at the other end of the conical surface and abuts the large-diameter section, a nut,which is coupled to one end of the small diameter section, and an elastic element provided between the nut and the bearing element.

[0009] In another aspect of the present disclosure, a steering device of a vehicle is provided, comprising the motor assembly, a push rod whose two ends are connected to a tie rod and a steering knuckle, a housing that receives the push rod and is coupled to a motor of the motor assembly, a ball nut that is coupled via a ball to an outer surface of the push rod and is connected to a driven belt pulley, and a belt that is coupled to a belt pulley contained in the motor assembly and the driven belt pulley.

[0010] In another aspect of the present disclosure, a steering device of a vehicle is provided, comprising the engine assembly, a steering column with a steering shaft to which an engine of the engine assembly is coupled, a driven belt pulley coupled to the steering shaft, and a belt coupled to a belt pulley contained in the engine assembly and the driven belt pulley.

[0011] According to the embodiments described in the present disclosure, it is possible to easily adjust the belt tension, simplify the motor installation structure in the steering system, and use one motor for different vehicle types. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a perspective exploded view of a motor arrangement according to the present embodiments. Fig. Figure 2 is a perspective view showing an example of the use of a motor arrangement according to the present embodiments. Fig. Figures 3 to 4 are perspective views of part of a motor arrangement according to the present embodiments. Fig. Figure 5 is a cross-sectional view of a part of a motor arrangement according to the present embodiments. Fig. Figure 6 is a perspective exploded view of part of a motor arrangement according to the present embodiments. Fig. Figure 7 is a cross-sectional view of part of a motor arrangement according to the present embodiments. Fig. Figure 8 is a perspective exploded view of a motor arrangement according to the present embodiments. Fig. Figure 9 is a perspective exploded view of part of a motor assembly according to the present embodiments. Fig. Figure 10 is a cross-sectional view of a part of a motor arrangement according to the present embodiments. Fig. Figure 11 is a perspective exploded view of part of a motor arrangement according to the present embodiments. Fig. Figure 12 is a cross-sectional view of a part of a motor arrangement according to the present embodiments. Fig. Figures 13 to 14 are perspective views of a steering device for a vehicle according to the present embodiments. DETAILED DESCRIPTION

[0012] In the following description of examples or embodiments or forms of the present disclosure, reference is made to the accompanying drawings, in which certain examples or embodiments that can be implemented are shown for illustrative purposes and in which the same reference numerals and symbols may be used to designate identical or similar components, even if these are shown in different accompanying drawings. Furthermore, in the following description of examples or embodiments of the present disclosure, detailed descriptions of known functions and components incorporated herein are omitted if it is determined that such a description could render the subject matter of some embodiments or forms of the present disclosure rather unclear.The expressions used herein, such as "encompass," "exhibit," "contain," "forming," "formed from," and "shaped from," are generally intended to permit the addition of other components, unless the expressions are used with the phrase "only." As used herein, singular forms are intended to include plural forms unless the context clearly indicates otherwise.

[0013] Expressions such as “first second”, “A”, “B”, “(A)”, or “(B)” may be used herein to describe elements of revelation. None of these terms are used to define any importance, order, sequence, or number of elements, etc., but are used merely to distinguish the respective element from other elements.

[0014] When it is mentioned that a first element is "connected or coupled" to a second element, or that it "touches or overlaps," this should be interpreted to mean that the first element can be "directly connected or coupled" to the second element, or that it can "directly touch or overlap," but also that a third element can be "arranged" "between" the first and second elements, or that the first and second elements can be "connected or coupled" to each other via a fourth element, or that they can "touch or overlap," etc. Here, the second element can be at least one of two or more elements that are "connected or coupled" to each other, "contact or overlap," etc.

[0015] When time-related terms such as "after", "following", "next", "before" and the like are used to describe processes or actions of elements or configurations or sequences or steps of actuation, processing, or manufacturing procedures, these terms may be used to describe processes or actions that are not consecutive or follow one another, as long as the term "direct" or "immediately" is not used in conjunction with them.

[0016] When any dimensions, relative sizes, etc., are mentioned, it should also be borne in mind that numerical values ​​for an element or characteristic, or corresponding information (e.g., degree, area, etc.), include a margin of error or tolerance that may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.), even if a relevant description is not specified. Furthermore, the term "could" can encompass all meanings of the term "may."

[0017] Fig. Figure 1 is a perspective exploded view of a motor arrangement according to the present embodiments, Fig. Figure 2 is a perspective view illustrating an example of the use of a motor arrangement according to the present embodiments. Fig. Figures 3 to 4 are perspective views of part of a motor assembly according to the present embodiments. Fig. Figure 5 is a cross-sectional view of a part of a motor arrangement according to the present embodiments, Fig. Figure 6 is a perspective exploded view of part of a motor assembly according to the present embodiments, Fig. Figure 7 is a cross-sectional view of a part of a motor assembly according to the present embodiments, Fig. Figure 8 is a perspective exploded view of a motor arrangement according to the present embodiments, Fig. Figure 9 is a perspective exploded view of part of a motor assembly according to the present embodiments, Fig. Figure 10 is a perspective cross-sectional view of a part of a motor arrangement according to the present embodiments, Fig. Figure 11 is a perspective exploded view of part of a motor assembly according to the present embodiments, Fig. Figure 12 is a perspective cross-sectional view of part of a motor arrangement according to the present embodiments, and Fig. Figures 13 to 14 are perspective views of a steering device for a vehicle according to the present embodiments.

[0018] First, an embodiment of the present disclosure will be presented with reference to the Fig. 1 to 7 described.

[0019] According to one embodiment, a motor assembly 100 can be provided comprising a motor 101 with a motor shaft 102 having a large-diameter section 103 and a small-diameter section 104 extending from one end of the large-diameter section, a first bearing element 121 that is hollow and provided on one side of an outer surface of the small-diameter section 104 and whose outer diameter decreases from one side to the other, a second bearing element 122 that is hollow and provided on the other side of the outer surface of the small-diameter section 104 and whose outer diameter increases from one side to the other, a belt pulley 110 that is hollow, has a plurality of slots 310 for penetration through an inner surface and an outer surface and whose inner surface has a first conical surface 511,which rests on the outer surface of the first bearing element 121, and has a second conical surface 512 which rests on the outer surface of the second bearing element 122, a nut 140 which is coupled to an end of the small-diameter section 104, a first elastic element 131 which is provided between the nut 140 and the first bearing element 121, and a second elastic element 132 which is provided between the second bearing element 122 and the large-diameter section 103.

[0020] As in the Fig. As shown in Figures 1 and 2, a belt 200 is supported on the outer surface of the belt pulley 110. When the belt 200 rotates, the torque of the motor 101 is transmitted to the driven part. The belt pulley 110 can be shaped to deform elastically in the radial direction, increasing or decreasing in diameter. The belt pulley 110 is enlarged by an elastic force from the first elastic element 131 and the second elastic element 132, thus compressing the belt 200 and maintaining its tension.

[0021] As in Fig. As shown in Figure 3, the belt pulley 110 is hollow, and several slots 310 are formed in the belt pulley 110 for penetration through the inner and outer surfaces. The slot 310 comprises a first slot 311, which extends from one end of the belt pulley 110 to the other side, and a second slot 312, which extends from the other end of the belt pulley 110 to one side.

[0022] The first slot 311 and the second slot 312 can be arranged alternately. Therefore, the first slot 311 and the second slot 312 can deform elastically to increase or decrease their width, so that the diameter of the belt pulley 110 can increase or decrease.

[0023] As in Fig. As shown in Figure 3, the first slot 311 and the second slot 312 can be formed parallel to an axial direction. Alternatively, as shown in Fig. As shown in Figure 4, the first slot 311 and the second slot 312 are spirally shaped.

[0024] In both cases, where the first slot 311 and the second slot 312 are parallel to the axial direction and spirally shaped, the belt pulley 110 can increase in diameter to compress the belt 200. When the first slot 311 and the second slot 312 are spirally shaped, the rib of the belt pulley 110, located between the first slot 311 and the second slot 312, can be supported by the belt 200 at a larger angle in the circumferential direction, thus enabling a tighter compression of the belt 200.

[0025] Referring to Fig. 1 and Fig. 5. The first bearing element 121 and the second bearing element 122 are inserted into the inner surface of the belt pulley 110 from one side and the other side, respectively. The first elastic element 131 and the second elastic element 132 each elastically support the first bearing element 121 and the second bearing element 122. Accordingly, the belt 200 is pressed in a direction in which the belt pulley 110 is enlarged by the elastic force of the first elastic element 131 and the second elastic element 132.

[0026] The motor shaft 102 of the motor 101 comprises a small-diameter section 104 and a large-diameter section 103. The small-diameter section 104 extends from one end of the large-diameter section 103. The nut 140 is coupled to one end of the small-diameter section 104, and the first elastic element 131, the first bearing element 121, the belt pulley 110, the second bearing element 122, and the second elastic element 132 are coupled to the motor shaft 102.

[0027] The first bearing element 121 and the second bearing element 122 have a hollow shape and are each provided on one side and on the other side of the outer surface of the small diameter section 104.

[0028] The first bearing element 121 has an outer diameter that decreases from one side to the other. The second bearing element 122 has an outer diameter that increases from one side to the other. That is, the first bearing element 121 and the second bearing element 122 can be shaped symmetrically in one direction, facing each other.

[0029] On the inside of the belt roller 110, a first conical surface 511 can be provided, which rests on the outer surface of the first bearing element 121, and a second conical surface 512, which rests on the outer surface of the second bearing element 122.

[0030] This means that the inner diameter of the belt pulley 110 decreases from side to side in the area where the first conical surface 511 is formed. In the area where the second conical surface 512 is formed, the inner diameter of the belt pulley 110 increases from side to side. The inner surface of the belt pulley 110 can have an approximate V-shape.

[0031] The first elastic element 131 is positioned between the nut 140 and the first bearing element 121, is supported by the nut 140 and presses on the first bearing element 121. The second elastic element 132 is positioned between the second bearing element 122 and the large-diameter section 103, is supported by the large-diameter section 103 and presses on the second bearing element 122.

[0032] On one side of the first bearing element 121 and on the other side of the second bearing element 122, a recessed groove can be provided in the axial direction to receive the first elastic element 131 and the second elastic element 132.

[0033] Accordingly, the first bearing element 121 and the second bearing element 122 are each pressed in a mutually directed direction by the first elastic element 131 and the second elastic element 132. Since the first bearing element 121 and the second bearing element 122 each bear against the first conical surface 511 and the second conical surface 512 of the belt pulley 110, the belt 200 is pressed in the direction in which the belt pulley 110 is enlarged, and the tension of the belt 200 is maintained.

[0034] Furthermore, the first elastic element 131 and the second elastic element 132 can be compressed or stretched by moving the nut 140 forwards or backwards. Accordingly, it is possible to easily adjust the tension of the belt 200 by adjusting the elastic force of the first elastic element 131 and the second elastic element 132.

[0035] In order to rotate the belt 200 by rotating the motor shaft 102 without loss of torque, it is necessary to prevent slippage between the small diameter section 104 and the inner surface of the first bearing element 121 and the second bearing element 122, between the outer surface of the first bearing element 121 and the second bearing element 122 and the belt pulley 110, and between the outer surface of the belt pulley 110 and the belt 200.

[0036] Although not shown in the figures, serrations can be formed on the small-diameter section 104 and the inner surfaces of the first bearing element 121 and the second bearing element 122. This means that the first bearing element 121 and the second bearing element 122 are coupled to the small-diameter section 104 in such a way that they are axially displaceable but circumferentially fixed to prevent slippage.

[0037] As in the Fig. As shown in Figures 6 to 7, a first, axially elongated groove 611 can be formed in the outer surface of the small-diameter section 104, and a second, axially extended groove 612 can be formed in the inner surface of the second bearing element 122. A bearing pin 620 is inserted into the first groove 611 and the second groove 612, and the first bearing element 121 and the second bearing element 122 are attached to the small-diameter section 104 in the circumferential direction to prevent slippage.

[0038] This means that the bearing pin 620 is essentially rod-shaped; the radially inner section of the bearing pin 620 is inserted into the first groove 611 and secured circumferentially by the small-diameter section 104. The radially outer part of the bearing pin 620 is inserted into the second groove 612 and secured circumferentially by the first bearing element 121 and the second bearing element 122.

[0039] To facilitate coupling in the axial direction, the first groove 611 can be shaped to open to one end of the small-diameter section 104. The second groove 612 can be shaped to open from the first bearing element 121 and the second bearing element 122 to both ends.

[0040] Furthermore, the first bearing element 121, the second bearing element 122 and the belt pulley 110 can be made of a material with high friction, so that slippage between the outer surfaces of the first and second bearing elements 121 and 122 and the inner surface of the belt pulley 110 can be prevented.

[0041] This means that the first bearing element 121 and the second bearing element 122 are each in close contact with the first conical surface 511 and the second conical surface 512 due to the elastic force of the first elastic element 131 and the second elastic element 132. Furthermore, the first conical surface 511 and the second conical surface 512 are in close contact with the first bearing element 121 and the second bearing element 122 due to the restoring force of the belt pulley 110. Accordingly, slippage can be prevented by manufacturing the first bearing element 121, the second bearing element 122, and the belt pulley 110 from a material with high friction.

[0042] Furthermore, similar to the bearing pin 620, the first groove 611, and the second groove 612, a groove can be formed on the inner circumferential surface of the belt pulley 110 and the outer circumferential surfaces of the first bearing element 121 and the second bearing element 122 to fix them circumferentially by inserting a pin. In this case, the depth of the groove or the thickness of the pin must be designed based on the increased diameter of the belt pulley 110.

[0043] Furthermore, it is also possible to prevent slippage between the outer surface of the belt pulley 110 and the belt by using a toothed belt and forming a groove that engages with the teeth of the belt on the outer circumferential surface of the belt pulley 110. Alternatively, slippage can also be prevented by increasing the area in which the belt pulley 110 and the belt are mounted.

[0044] As in Fig. 5 and Fig. As shown in Figure 7, both ends of the belt pulley 110 are provided with a stepped section 320 that projects radially to prevent the belt 200 from slipping off or becoming separated. The stepped section 320 is shaped to project conically, and a V-shaped belt, bearing against the conical surface of the stepped section 320, is used as the belt 200. This prevents slippage by increasing the area in which the outer circumferential surface of the belt pulley 110 and the belt 200 are supported.

[0045] An embodiment of the present disclosure is described below with reference to the Fig. 8 to 12 described.

[0046] According to one embodiment, a motor assembly can be provided comprising a motor 101 with a motor shaft 102 having a large-diameter section 103 and a small-diameter section 104 extending from one end of the large-diameter section 103, a bearing element 820 that is hollow and provided on an outer surface of the small-diameter section 104 and whose outer diameter decreases from one side to the other, a belt pulley 810 that is hollow, has a plurality of slots 310 for penetration through an inner surface and an outer surface, and whose inner surface has a conical surface 1001 that rests on the outer surface of the bearing element 820, and a stepped region 1002 that is formed with a diameterwhich is enlarged at the other end of the conical surface 1001 and is supported by the large-diameter section 103, a nut 140 coupled to one end of the small-diameter section 104, and an elastic element 830 provided between the nut 140 and the bearing element 820.

[0047] Compared to those in the Fig. The embodiments shown in Figures 1 to 7 are described in the following sections. Fig. In embodiments 8 to 12 shown, only one bearing element 820 and one elastic element 830 are provided, and a conical surface 1001 is also provided on the inner surface of the belt roller 810.

[0048] The same reference symbols are used for the same components as in the embodiments described above, and detailed descriptions of them are omitted.

[0049] A plurality of slots 310 for reaching through the inner surface and outer surface are formed in the hollow shaped belt roller 810, the belt roller 810 is enlarged by the elastic force of the elastic element 830, so that the belt is pressed and the tension of the belt is maintained.

[0050] The slot 310 includes a first slot 311, which runs from one end of the belt pulley 810 to the other end, and a second slot 312, which runs from the other end of the belt pulley 810 to one side.

[0051] The first slot 311 and the second slot 312 can be provided alternately, and the first slot 311 and the second slot 312 can be parallel to the axial direction (see Fig. 8) or in a spiral shape (see Fig. 9) be trained.

[0052] As in the Fig. 8 and Fig. As shown in Figure 10, the bearing element 820 is inserted into the inner surface of the belt pulley 810 from one side. The elastic element 830 elastically supports the bearing element 820, so that the belt is pressed in a direction in which the belt pulley 810 is enlarged by the elastic force of the elastic element 830.

[0053] The bearing element 820 is hollow and is provided on the outer surface of the small diameter section 104, and the outer diameter of the bearing element decreases from one side to the other.

[0054] The inner circumferential surface of the belt pulley 810 is provided with a conical surface 1001, which rests on the outer surface of the bearing element 820. This means that the inner diameter of the belt pulley 810 decreases from one side to the other in the area where the conical surface 1001 is formed.

[0055] Furthermore, the inner circumferential surface of the belt pulley 810 is provided with a stepped area 1002, which abuts the large-diameter section 103 of the motor shaft 102. The stepped area 1002 is formed by increasing the diameter at the other end of the conical surface 1001.

[0056] That is, since the other end of the conical surface 1001 is an area where the inner diameter of the belt pulley 810 is minimized, the stepped area 1002 is formed by increasing it from the other side of the inner circumferential surface of the belt pulley 810.

[0057] The stepped section 1002 rests against the large-diameter section 103, and the other side of the belt pulley 810 is supported axially by the motor shaft 102. The elastic element 830, located between the nut 140 and the bearing element 820, presses the bearing element 820 against the nut 140. The belt is thus forced in the direction of the belt pulley 810's increase in diameter, maintaining belt tension.

[0058] Since the elastic element 830 can be compressed or tensioned by moving the nut 140 forwards or backwards, it is possible to easily adjust the tension of the belt by adjusting the elastic force of the elastic element 830.

[0059] Meanwhile, a serrated toothing can be formed in a similar manner to prevent slippage between the small-diameter section 104 and the inner circumferential surface of the bearing element 820. Alternatively, as in the Fig. As shown in Figures 11 to 12, a first axially elongated groove 611 is formed in the outer surface of the small-diameter section 104, and a second axially elongated groove 612 is formed in the inner surface of the second bearing element 820. Accordingly, the bearing element 820 can be firmly connected circumferentially to the small-diameter section 104 by means of the bearing pin 620 inserted into the first groove 611 and the second groove 612, thus preventing slippage.

[0060] Furthermore, by manufacturing the bearing element 820 and the belt pulley 810 from a material with high friction, slippage between the outer circumferential surface of the bearing element 820 and the inner circumferential surface of the belt pulley 810 due to frictional force can be prevented.

[0061] The bearing element and the belt pulley can be attached circumferentially by machining a groove into the outer surface of the bearing element 820 and the inner surface of the belt pulley 810 and inserting a pin into this groove.

[0062] Furthermore, slippage can be prevented by using a toothed belt and having a groove formed on the outer circumferential surface of the belt pulley 810 that engages with the teeth of the belt. Alternatively, to prevent slippage or separation of the belt, a stepped area 320, projecting radially from one end and the other end of the belt pulley 810, can be shaped to project conically, and a V-shaped belt can be used, thus also preventing slippage by increasing the area in which the belt pulley 810 and the belt 200 bear.

[0063] With an engine arrangement of this type, the belt tension can be easily adjusted by moving the nut forward or backward, thus simplifying the belt tension adjustment process.

[0064] An embodiment of the present disclosure is described below with reference to Fig. 13 described.

[0065] According to one embodiment, a steering device 1300 of a vehicle may be provided, comprising a motor arrangement 100 or 800, a push rod 1320, both ends of which are connected to a tie rod and a steering knuckle, a housing 1310 that receives the push rod 1320 and is coupled to a motor 101, a ball nut 1330 that is coupled via a ball to an outer surface of the push rod 1320 and is coupled to a driven belt pulley 1340, and a belt 200 that is coupled to a belt pulley 110 or 810 and the driven belt pulley 1340.

[0066] The in Fig. The steering device 1300 shown for a vehicle can be part of a rack-and-pinion power steering system or a steer-by-wire steering system, and the pushrod 1320, the ball nut 1330, the driven belt pulley 1340 and the like are generally the same as those known, and therefore a detailed description is omitted.

[0067] That is, the motor arrangement 100 according to the one in the Fig. 1 to 7 shown embodiments or the motor arrangement 800 according to the illustrations in the Fig. The embodiment shown in Figures 8 to 12 can be installed in the housing 1310 so that the driver's steering input can be assisted by the torque of the motor 101, or the wheel can be steered in accordance with the driver's steering input. The tension of the belt 200, which connects the belt pulleys 110 or 810 and the driven belt pulley 1340, can be easily adjusted by moving the nut 140 forward or backward.

[0068] An embodiment of the present disclosure is described below with reference to Fig. 14 described.

[0069] According to one embodiment, a steering device 1400 may be provided which includes a motor arrangement 100 or 800, a steering column 1410 with a steering shaft 1420 coupled to a motor 101, a driven belt pulley 1430 coupled to the steering shaft 1420, and a belt 200 coupled to a belt pulley 110 or 810 and the driven belt pulley 1430.

[0070] The in Fig. The steering device 1400 shown for a vehicle can be part of a steer-by-wire steering device, and the steering shaft 1420, the steering column 1410, the driven belt pulley 1430 and the like are generally the same as those known, and therefore a detailed description is omitted.

[0071] That is, the motor arrangement 100 according to the one in the Fig. 1 to 7 illustrated embodiments or the motor arrangement 800 according to the Fig. The embodiment shown in Figures 8 to 12 can be installed in the steering column 1410. This makes it possible to apply a steering response force to the steering shaft 1420 and improve the driver's steering feel. Furthermore, the tension of the belt 140, which connects the belt pulleys 110 or 810 and the driven belt pulley 1430, can be easily adjusted by moving the nut 140 forward or backward.

[0072] In addition to the ones in the Fig. However, in the embodiments shown in Figures 13 to 14, the motor arrangements 100 and 800 according to the present embodiments can also be used for other types of steering devices which have a structure for transmitting the motor torque via a belt.

[0073] When steering a vehicle with this configuration, it is not necessary to mount the motor eccentrically, as is the case with conventional steering systems, nor is it necessary to rotate the motor while it is coupled to the housing to adjust the belt tension. Consequently, the motor installation structure and assembly process can be simplified, and motors can be interchanged between different vehicle models without causing any disruption to the surrounding components.

[0074] The above description is presented to enable a person skilled in the art to implement and utilize the technical concept of this disclosure and is provided in connection with a specific application and its requirements. Various modifications, additions, and substitutions to the described embodiments are provided.

Claims

[1] Motor arrangement (100) comprising: a motor (101) with a motor shaft (102) having a large diameter section (103) and a small diameter section (104) extending from one end of the large diameter section (103); a first bearing element (121) which is formed in a hollow shape and is provided on one side of an outer surface of the small-diameter section (104), and whose outer diameter decreases from one side to the other; a second bearing element (122) which is formed in a hollow shape and is provided on the other side of the outer surface of the small diameter section (104), and whose outer diameter increases from one side to the other; a belt roller (110) which is formed in a hollow shape, has a plurality of slots (310) for passing through an inner surface and an outer surface and whose inner surface has a first conical surface (511) which rests on the outer surface of the first bearing element (121) and a second conical surface (512) which rests on the outer surface of the second bearing element; a nut (140) coupled to one end of the small diameter section (104); a first elastic element (131) provided between the nut (140) and the first bearing element (121); and a second elastic element (132) provided between the second bearing element (122) and the large diameter section (103), wherein a first groove (611) is formed on the outer surface of the small-diameter section (104), extending in an axial direction and into which a bearing pin (620) is inserted, and a second groove (612) is formed on the inner surfaces of the first bearing element (121) and the second bearing element (122), extending in the axial direction and into which the bearing pin (620) is inserted. [2] Motor arrangement (100) according to claim 1, wherein the plurality of slots (310) comprises a first slot (311) formed from one end of the belt pulley (110) to the other side, and a second slot (312) formed from the other end of the belt pulley (110) to one side. [3] Motor arrangement (100) according to claim 2, wherein the first slot (311) and the second slot (312) are provided alternately. [4] Motor arrangement (100) according to claim 2, wherein the first slot (311) and the second slot (312) are spirally shaped. [5] Motor arrangement (100) according to one of claims 1 to 4, wherein both one end and the other end of the belt pulley (110) are provided with a stepped area (320) that projects in the radial direction. [6] Motor arrangement (100) according to claim 5, wherein the stepped section (320) protrudes in a conical shape. [7] Motor arrangement (800) comprising: a motor (101) with a motor shaft having a large diameter section (103) and a small diameter section (104) extending from one end of the large diameter section (103); a bearing element (820) which is formed in a hollow shape and is provided on an outer surface of the small-diameter section (104) whose outer diameter decreases from one side to the other; a belt pulley (810) which is formed in a hollow shape, has a plurality of slots (310) for passing through an inner surface and an outer surface and the inner surface of which has a conical surface which rests on the outer surface of the bearing element (820) and a stepped area (1002) which is formed with a diameter which is increased at the other end of the conical surface and is supported by the large diameter section (103); a nut (140) coupled to one end of the small diameter section (104); and an elastic element (830) provided between the nut and the bearing element (820), wherein a first groove is formed on the outer surface of the small-diameter section (104) which extends in an axial direction and into which a bearing pin is inserted, and a second groove is formed on inner surfaces of the bearing element (820) which extends in the axial direction and into which the bearing pin (620) is inserted. [8] Motor arrangement (800) according to claim 7, wherein the plurality of slots (310) comprises a first slot (311) formed from one end of the belt pulley (810) to the other side, and a second slot (312) formed from the other end of the belt pulley (810) to one side. [9] Motor arrangement (800) according to claim 8, wherein the first slot (311) and the second slot (312) are provided alternately. [10] Motor arrangement (800) according to claim 8, wherein the first slot (311) and the second slot (312) are spirally shaped. [11] Motor arrangement (800) according to one of claims 7 to 10, wherein both one end and the other end of the belt pulley (810) are provided with a stepped area that projects in the radial direction. [12] Motor arrangement (800) according to claim 11, wherein the stepped area protrudes in a conical shape. [13] Steering device of a vehicle with an engine arrangement (100, 800) according to claim 1 or claim 7.

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