CN107406092B

CN107406092B - Steering rod tilting device

Info

Publication number: CN107406092B
Application number: CN201580070031.7A
Authority: CN
Inventors: 洪圣种; 尹馨晙; 李廷男; 金振宇; 黄仁宣; 文京焕
Original assignee: Namyang Industrial Co Ltd
Current assignee: Namyang Industrial Co Ltd
Priority date: 2014-10-27
Filing date: 2015-06-16
Publication date: 2020-09-22
Anticipated expiration: 2035-06-16
Also published as: CN107406092A; WO2016068437A1

Abstract

The present invention relates to a tilting device of a steering lever, and more particularly, to smoothly guide a serration coupling between a movable gear, which moves by interlocking with a tilting shaft during operation of an operating lever for upward and downward tilting movements, and a fixed gear fixed to a vehicle body, thereby providing advantages of being capable of eliminating a feeling of poor operation and preventing a reduction in emotional quality of consumers.

Description

Steering rod tilting device

Technical Field

The present invention is characterized in that a steering lever is set according to a body or posture of a driver and is not inclined at a position set by an impact or vibration applied to a vehicle during an operation, and relates to a tilting device of a steering lever, which prevents generation of noise during a tilting operation of the lever and has excellent mountability and fixability with respect to a tilting bracket.

Background

The conventional steering rod is installed in the tilting apparatus and tilted. Such a tilting apparatus generally includes a tilting bracket for supporting a rod tube of a steering rod, a mounting bracket mounted on a tapered portion of the tilting bracket, and an operating lever mounted on the tilting bracket for fixing a position of the tilting bracket with respect to the mounting bracket. Accordingly, the user can move the tilting bracket supporting the rod pipe to a predetermined position of the mounting bracket by operating the manipulation lever.

However, when an impact or vibration is applied to the vehicle in the above structure, the tilt bracket supporting the boom pipe slides out of the mounting bracket and deviates from the mounting position. In this case, the user must change the position of the tilting bracket by operating the joystick again.

Korean patent No.10-0561086 (hereinafter, referred to as "prior patent") discloses a novel steering rod tilting device for solving the above-mentioned technical problems.

The prior art patent discloses a structure in which a mounting bracket is fixed to a prestressed portion of a vehicle, first and second side portions extend downward from both ends of the fixed portion, and a second guide portion is formed on the first side portion, and the tilting bracket includes: and a tilting bracket passing through the gear guide groove and the rail groove and engaged with the gear guide groove. The tilting bracket includes a tilting and axis-moving portion that moves the tilting axis in an axial direction such that the brake gear selectively engages with the gear guide groove. The joystick includes: a lever axially coupled to the moving portion to move the skew shaft in the axial direction; and a lever portion extending from the lever shaft portion and pressed by a user.

In particular, in the shaft-moving part, a first cam bushing penetrates through the inclined shaft, which penetrates through the gear guide groove, and is fixed to the first side part, a second cam bushing penetrates through the inclined shaft in a state of being in close contact with the first cam bushing, a nut is coupled through the inclined shaft of the guide rail groove, and a diaphragm spring is disposed between the nut and the second side part, wherein the first cam bushing and the second cam bushing are provided with the first inclined shaft penetrating through the second cam bushing, and the second cam bushing is fixed to the lever shaft part.

The prior patent having the above-described structure is configured such that, when an action of changing the tilting position of the steered wheel by an operation of a lever portion of a lever of a driver is inputted, the first and second cam bushes, the tilting shaft elastically biased against the tilting spring are moved toward the coil spring, and the brake gear is separated from the gear guide groove. In this state, when the user moves the tilt bracket up and down with respect to the mounting bracket, it is operable to come to a specific position.

However, in the case of the prior art, it is necessary to separately manufacture the first cam bushing and the second cam bushing having the special shapes of the first and second inclined surfaces, and the structure is very complicated and the brake gear is engaged with the gear guide groove. When the distance between the first cam bushing and the second cam bushing is shortened, there is a case where the engagement is not smooth, thereby giving a sense of failure to the consumer. In this case, mechanical friction noise is generated.

Disclosure of Invention

Technical problem

The present invention is conceived to solve the above-mentioned problems, and an object of the present invention is to provide a tilt bracket, which can smoothly adjust the position of the tilt bracket by operating a manipulation lever, thereby preventing mechanical friction from being generated. An object of the present invention is to provide a tilting apparatus of a steering lever capable of suppressing generation of noise and simplifying an assembling process of a holding force holding member with respect to a tilting bracket.

Technical scheme

One embodiment of the steering column tilting device according to the present invention comprises: a mounting bracket for securing the rod tube housing, wherein the steering rod tube is mounted to a stationary portion of the vehicle; a tilt bracket coupled to the wand tube to allow the wand tube housing to tilt up and down relative to the mounting bracket when the joystick is operated; a tilt bracket having one end connected to the operating lever is disposed outside a second side of the tilt bracket, and the other end passes through the second side and extends outward through a first side opposite to the second side, and; the fixed gear and the movable gear are coupled with the first side portion and coupled with the other end portion of the extension shaft extending through the first side portion such that the tilting bracket is operated to tilt when the joystick is operated; wherein the fixed gear is fixed to an outer side of the first side portion of the tilt bracket, and the movable gear is rotatably provided with respect to a rotation shaft provided on the fixed gear and movably provided along the rotation shaft.

The fixed gear is formed with an inclined groove into which the inclined shaft is inserted, and tilting up and down operations are performed in a sliding direction of the inclined shaft, and the movable gear is formed with an elliptical inclined shaft through-hole through which the inclined shaft passes, a holding member for holding the operations: a Bush tube penetrating the inclined groove and having a step gap to fill the through hole of the inclined shaft; the tilting device of the steering rod further comprises an elastic body for providing elastic force to the Bush tube.

When the outer diameter is one end portion and the portion having the small outer diameter is defined as the other end with reference to the step difference based on the above-mentioned step difference, the outer diameter of the other end portion is jammed in the through hole of the eccentric shaft, and therefore, the tilting means of the tilting column is formed to be larger than the minimum diameter of the through hole of the tilting shaft.

When the outer diameter is one end portion and the outer diameter portion is the other end portion referring to the step difference based on the above step difference, the other end portion is longer than the thickness of the movable gear of the tilting device of the steering lever.

The step difference of the Bush tube is blocked when the steering rod rotates in the direction opposite to the fixed gear, and the tilting device of the steering rod has the step difference and does not block the Bush tube when the steering rod rotates in the direction contacting with the fixed gear.

Wherein the elastic body is disposed at a position not to hinder the rotation of the movable gear.

The other end of the tilting shaft extended through the movable gear is coupled to the outside of the movable gear by a predetermined coupling means provided on the tilting shaft, but the movable gear fixed on the tilting shaft and the ball washer wire harness outside the ball washer wire harness are inserted into the ball washer wire harness, and the tilting means of the steering rod includes a ball washer in surface contact with the ball washer.

The fixed gear is formed with an inclined groove into which the inclined shaft is inserted, and is inclined upward and downward in a direction in which the inclined shaft slides, and the tilting device of the tilting lever has noise prevention dampers contacting the inclined shaft at both ends of the inclined groove.

At both ends of the tilting groove, the tilting means of the tilting lever is provided with coupling openings to detachably mount noise prevention dampers.

Wherein at least one latching protrusion is provided at both ends of the inclined groove so as to extend to the inside of the coupling hole, wherein the noise prevention damper is provided with a latching groove engaged with the latching protrusion, and its movement in the longitudinal direction in the inclined groove is restricted.

Wherein the noise prevention damper is provided with an impact absorbing hole perpendicular to a longitudinal direction of the inclined groove so as to absorb an impact transmitted from the inclined shaft when contacting the inclined shaft.

Wherein the tilting shaft is a part of the fixing portion protruding from the first side portion along an edge of the tilting groove to be press-fitted to an inner end of the tilting shaft.

At least one through hole is formed through the first side portion, wherein the fixed gear is provided with at least one fixing boss inserted into the through hole at an outer side surface of the first side portion, and has a tip portion exposed to the inner side surface of the first side portion.

Wherein the fixing projection is engaged by caulking a front end portion exposed on the inner side surface of the first side portion.

Wherein the fixed gear is provided with a rack gear portion engaged with a movable gear and a contact surface, wherein the movable gear is formed using a brake gear portion engaged with the rack gear portion, wherein the rack gear portion and the brake gear portion are processed in a shape of a vertical cross section of a triangle or a quadrangle.

Technical effects

According to the preferred embodiment of the steering lever tilting device of the present invention, the following effects can be achieved.

First, during the toothed engagement, the area of the first contact portion of the fixed gear and the movable gear of the holding mechanism is minimized, thereby preventing the occurrence of machine noise. In the operation of the joystick, the feeling of malfunction can be eliminated.

Secondly, when the movable gear rotates, the spherical washer housing and the spherical washer inserted in the tilting shaft are rotatably supported to be in surface contact with each other, thereby preventing breakage.

Third, there is an effect that it is possible to prevent an operation noise from occurring between the tilting operation and the object interfered by the tilting axis.

Fourth, the holding force maintaining member can be firmly fixed to the tilting bracket by a simpler method, and reliability of the product can be improved.

Drawings

Figure 1 is a perspective view of a steering column tilting device according to an embodiment of the present invention,

figure 2 is an exploded perspective view showing a part of the configuration of figure 1 on an enlarged scale,

fig 3 is a partially enlarged perspective view illustrating the steering lever tilting device shown in fig 1,

fig 4 is a perspective view showing a state where the holding force maintaining member is engaged in the structure of fig 1,

FIG. 5(a) and FIG. 5(b) are side views each showing an operation of the steering lever tilting device shown in FIG. 1,

figure 6 is a cross-sectional view taken along line a-a of figure 5(a),

fig. 7(a) is an action diagram and a partial sectional view showing an action diagram of the steering lever tilting device shown in fig. 1 when a user operates the manipulation lever to tilt up and down, fig. 7(b) is an action diagram and a partial sectional view showing an action diagram of the steering lever tilting device shown in fig. 1 when the user operates the manipulation lever via the holding force holding member to fix a tilting position after the user tilts or tilts to a desired position, fig. 8 is a partial perspective view of the steering lever tilting device according to another embodiment of the present invention,

figures 9 and 10 are perspective views showing the engagement state of one side surface and the other side surface of the fixed gear and the moving gear respectively in the structure of figure 8,

figure 11 is a perspective view showing the state in which the fixed gear is engaged with the tilting bracket during the construction of the window 8,

figure 12 is a perspective view of a steering column tilting device according to another embodiment of the present invention,

fig. 13 is a perspective view of the fixed gear and the movable gear in the structure of fig. 12.

Detailed Description

Hereinafter, embodiments of a steering lever tilting device according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is an exploded perspective view of a tilting device of a steering lever according to an embodiment of the present invention, fig. 2 is an exploded perspective view showing a part of the structure of fig. 1, fig. 3 is a view showing the tilting device of the steering lever of a partially enlarged perspective view shown in detail in fig. 1, and fig. 4 is a perspective view showing a combination of holding in the structural device of fig. 1, fig. 5(a) and 5(b) are side views respectively showing the operation of the tilting device of the steering lever shown in fig. 1, fig. 6 is a sectional view taken along a line AA in fig. 5(a), and fig. 7(a) and 7(b) are an operation view and a partial sectional view showing the operation of a steering lever tilting apparatus shown in fig. 1.

Fig. 2 is an exploded perspective view showing a part of the structure of fig. 1, fig. 4 is a perspective view showing a state where a holding force holding member refers to the structure of fig. 1, fig. 5(a) and 5(b) are respectively cross-sectional views taken along line AA in fig. 5(a) of the steering lever tilting device shown in fig. 6, which is a side view showing the structure of fig. 1, and fig. 7(a) and 7(b) are an operation view and a partial cross-sectional view showing an operation of the steering lever tilting device shown in fig. 5(a) and 5(b), respectively.

Fig. 1 to 4, a steering column tilting device 100 according to the present invention includes a column pipe housing 115 in which a column pipe 110 of a steering column is seated and supported, an a-mounting bracket 120 is fixed to a small portion of a vehicle, and tilting

brackets

131 and 132 are supported in such a manner that the

tilting brackets

131 and 132 can be raised and lowered according to a user's selection; and a manipulation lever 140 coupled to the mounting bracket 120 and adjusting the position of the

tilting brackets

131 and 132 with respect to the mounting bracket 120 according to a user's manipulation.

More specifically, the mounting bracket 120 adjusts the fixing of the rod tube housing to a predetermined portion of the vehicle body, and also serves to fix the rod tube housing 115 to which the steering rod is coupled. Here, the mounting bracket 120 may be disposed orthogonal to the longitudinal direction of the rod tube 110 so as to be stably fixed to a stationary portion of the vehicle.

The

tilt brackets

131 and 132 engage the mounting bracket 120 at a lower end of the center of the mounting bracket 120 such that the

tilt brackets

131 and 132 move relative to the mounting

brackets

120 and 121 and 122 to reduce steering-and may include a first side 131 and a second side 132, each extending around the outer surface of the pole tube 110 and the pole tube housing 115.

The operating lever 140 may be connected to an outer side of any one of the first and

second sides

131 and 132 so as to be rotatable by a predetermined angle. The joystick 140 is coupled to one end of the tilt shaft 230, the tilt shaft 230 includes a first side portion 131 and a second side portion 132, and rotates about the tilt shaft 230 as a rotation center axis. In the embodiment shown in fig. 2, the lever 140 is disposed outside the second side portion 132, and the holding force retaining member 200 is disposed outside the first side portion 131. That is, one end of the tilting shaft 230 is disposed adjacent to the second side portion 132 and connected to the lever 140, and the other end of the tilting shaft 230 is connected to the holding force maintaining member 200 and extends outward from the side portion 131.

The tilting shaft 230 may be disposed to pass through the first and

second side portions

131 and 132 and may reciprocate a predetermined distance in a longitudinal direction according to a rotation angle of the manipulation lever 140. The other end of the tilting shaft 230 extends through the second side portion 132 and the first side portion 131 and protrudes outside the first side portion 131 by a predetermined length.

The steering lever tilting device 100 according to the present invention is coupled to the other end of the tilting shaft 230 on the outer side of the first side portion 131, and the holding force retaining member 200 is used to be released or fixed to the vehicle body, so that the tilt-up and tilt-down operations of the vehicle can be performed.

Specifically, when the user rotates the joystick 140 by a predetermined angle to move the tilt shaft 230 in the direction of the first side portion 131, the fixing force holding means 200 releases the steering force to the driver for the tilt-up and tilt-down operations for moving the tilt shaft 230 away from the tilt shaft 230 or close to the tilt shaft 230. In contrast, if the tilting shaft 230 is moved in the direction of the second side 132, the operation cannot be performed.

More specifically, the holding force maintaining member 200 includes a fixed gear 210 fixedly secured to the first side portion 131, a rotation shaft 240 formed on the fixed gear 210 by an operation of the lever 140, and the first side portion 131 of the movable gear 220 disposed at the outside is rotatable by a predetermined angle with respect to the first side portion 131.

The other end of the tilting shaft 230 extends through the fixed gear 210 to the outside of the first side 131 by a predetermined length, and includes a movable gear 220 disposed to face the outside of the fixed gear 210 and extends outward.

The fixed gear 210 may be formed with an inclined groove 213 for guiding the movement of the inclined shaft 230 interlocked with the rod tube housing so as to enable the above-described up-and-down tilting. The tilting shaft 230 moves within the range of the tilting groove 213 so that the inclination and tilting can be performed as described above.

Specifically, the inclined groove 213 functions to limit the inclined distance of the rod tube housing. That is, as described above, the other end of the tilt shaft 230 is inserted into the tilt groove 213, and the tilt shaft 230 is moved within the tilt groove 213 interlocked with the rod tube housing. When the tilting shaft 230 contacts one end and the other end of the tilting groove 213, the tilting distance is limited.

In fig. 4, one end of the movable gear 220 is rotatably fixed by a rotating shaft (rotating pin) 240 provided at an end of the fixed gear 210, and the other end of the movable gear 220 is fixed. The gear 210 may be coupled to one surface of the fixed gear 210 facing the gear 210.

Here, the movable gear 220 may be coupled to the rotation shaft 240 by a predetermined distance so that the user inclines upward and downward.

The other end of the tilting shaft 230 extending through the movable gear 220 by a predetermined coupling means may be coupled to the outside of the movable gear 220. The movable gear 220 may be formed with a tilt shaft through hole 223 through which the tilt shaft 230 passes.

As shown in fig. 2, 5(a), 5(b) and 7(a), 7(b), the predetermined coupling means includes a ball washer housing 295 and a ball washer (not shown) inserted at the end of the tilting shaft 230 at which the movable gear 220 extends. First and

second washers

270 and 275, and a needle roller cage 280 interposed between the first and

second washers

270 and 275, a ball washer 295, and a coupling nut 290 fastened to a tip of the tilting shaft 230 corresponding to an outer side of the second washer 275.

The

spherical washer portions

295 and 297 smoothly rotate the movable gear 220 rotating with respect to the fixed gear 210 and prevent the movable gear 220 from being damaged by contact with a peripheral structure due to friction when the movable gear 220 rotates.

More specifically, the

spherical washer portions

295 and 297 are inserted and fitted in a spherical washer housing 295 as a female washer, the spherical washer ring 297 serves as a male washer, the spherical washer housing 295 is formed with a spherical groove in the interior thereof, and the lower spherical washer 297 is formed with a spherical protrusion which is in surface contact with the groove of the spherical washer housing 295.

The ball washer housing 295 is fixed to an upper surface of the movable gear 220 such that the movable gear 220 is engaged with the upper surface of the ball washer housing 295. The rotation is guided by the rotating spherical washer 297 to be in contact with the inner side surface of the spherical washer housing 295 when the tilt-up and tilt-down operations move a predetermined distance along the rotation shaft 240.

When the movable gear 220 rotates with respect to the fixed gear 210, the rotation gear 220 rotates between the protrusions of the spherical washer 297, which is substantially fitted to the tilting shaft 230 through the groove of the spherical washer housing 295. It is prevented from being damaged by contact and friction between the first gasket 270 and a peripheral structure such as the second gasket 275 or the like.

Of course, the other end of the tilting shaft 230 may be formed with an external threaded part, not shown, with which the coupling nut 290 may be engaged.

In fig. 5(a), 5(b) and 7(a), 7(b), the holding force maintaining member 200 includes an inclined shaft 230 (see fig. 5(a) and 5(b)) that arranges a tube 255, which is arranged to pass through the fixed gear 210 and the movable gear 220 while supporting the movable gear 220 in a direction in which the movable gear 220 and the fixed gear 210 are separated from each other, opposite to the side provided with the predetermined coupling means, with reference to the fixed gear 210 and the movable gear 220, as shown.

In fig. 5(a), 5(b) and 7(a), 7(b), the holding force holding member 200 may be configured to apply an elastic force to the bushy tube 255 in a direction in which the movable gear 220 and the fixed gear 210 are separated from each other, the elastic body 260 is disposed between the bushy tube 255 and the elastic body 260, and has the bushy tube 255 at one side and the elastic body 260 at the other side. And a movable housing block 250 for transmitting elastic force to the bushy tube 255. Reference numeral 115a denotes a guide for guiding and supporting the movement of the movable housing block 250.

In fig. 5(a), 5(b) and 7(a), 7(b), when the tilting shaft 230 is moved in the direction of the first side portion 131 due to the operation of the joystick 140, the other end of the movable gear 220 rotates the shaft 240 in the rotating direction. The contact with the fixed gear 210 is released and the fixing force with the vehicle body is released, so that the up-down tilting operation can be performed.

When the moving shaft 230 moves in the direction of the second side portion 132 due to the operation of the operating lever 140, the other end of the movable gear 220 rotates the rotating shaft 240 with respect to the direction of the fixed gear 210 and is fixed to the vehicle body, so that the tilting and lowering operations can no longer be performed.

The fixed gear 220 faces the movable gear 220, when the movable gear 220 rotates in an articulated state and is engaged in a tilting direction of the wand tube housing, the movable gear 220. And a brake gear portion 221 engaged with the rack gear portion 211 may protrude from a surface of the movable gear 220 facing the fixed gear 210. That is, when the fixed gear 210 and the movable gear 220 contact each other, the movable gear 220 in the obliquely upward and downward inclined directions can be prevented from moving relative to the rotation shaft 240 (230).

Hereinafter, in order to prevent confusion of understanding, as shown in fig. 3, the protruding portion of the tilt shaft 230 extending toward the first side is referred to as "upper portion" and the opposite portion will be referred to fig. 5(a) and 5(b) and drawings by setting the direction to "low", however, the scope of the present invention should not be reduced or misunderstood by definition of the direction, and the scope of the present invention should be construed by claims only.

The upper end 255A of the bushy tube 255 is formed in a tubular shape, and the outer diameter thereof is smaller than the outer diameter of the remaining portion of the upper end 255A of the bushy tube 255. The outer diameter of the tube 255 may pass through the tilt shaft through hole 223 formed in the movable gear 220. The diameter of the inclined through-hole 223 may be smaller than the minimum diameter of the inclined through-hole 223.

The outer diameter of the lower end portion 255B of the bushy tube 255 may be formed large enough to form a predetermined step 255S with the upper end portion 255A of the bushy tube 255. The outer diameter of the tilting axis passes through the smallest diameter.

On the other hand, for ease of reference to step 255S, the bushy tube 255 is divided into a lower portion 255B and an upper portion 255A. The upper and lower lengths D1 and D2 of the upper end portion 255A correspond to the upper and lower lengths D2).

That is, the bushy tube 255 may have a lower end 255B with a larger outer diameter relative to step 255S and a lower end 255A with a smaller outer diameter relative to step 255S.

An elastic body is provided on the tilting shaft 230 at a position where the tube 255 is disposed, and is configured to impart a predetermined elastic force when the movable gear 220 rotates with respect to the fixed gear 210. So-called "tooth teeth" do not occur when the gear 210 and the movable gear 220 contact each other and the elastic force provided by the elastic body is too large until the rack gear portion 211 and the brake gear portion 221 engage each other. Excessive mechanical noise

The tilting apparatus 100 according to the present invention has an outer diameter smaller than the minimum diameter of the tilting shaft through hole 223 of the movable gear 220 to solve the above-mentioned bushy tube 255 having the upper end portion 255A, and the upper and lower lengths D1 larger than the upper and lower lengths D2 of the movable gear 220 are located below the fixed gear 210 and the movable gear 220 instead of the previous portion 260 where the elastic body is located, at positions that do not interfere with the rotation of the movable gear 220.

Referring to fig. 7(a), 7(b), a manner in which the movable gear 220 rotates relative to the fixed gear 210 via the bushy tube 255 having the above-described structure will be described.

As shown in fig. 7(a), when the user operates the joystick 140 to tilt up and down, the tilt shaft 230 moves upward to apply an elastic force from the elastic body 260. The movable gear 220 is rotated up 255 by the receiving bushy pipe to release the contact state of the movable gear 220 with respect to the fixed gear 210,

a vertical length D1 from the upper end portion 255A to a distal end portion of the bushy tube 255 is longer than a vertical length D2, which is a thickness of the movable gear 220 and the upper end portion 255A, and has an outer diameter smaller than the inclined-axis through hole 223 formed in the movable gear 220 and the step 255S of the bushy tube 255 is smaller than a minimum diameter of the inclined-axis through hole 223 of the movable gear 220, so that the movable gear 220 rotates while applying a predetermined elastic force to the movable gear 220.

Then, as shown in fig. 7(b), when the user operates the manipulation lever 140 via the holding force maintaining member 200 to fix the tilted position after the user tilts or tilts to a desired position, the tilting shaft 230 is and the movable gear 220 rotates by a predetermined engagement means to press the upper surface of the movable gear 220 to contact the fixed gear 210.

Meanwhile, the bushy tube 255 is formed so that a vertical length D1 from a part of the upper end 255A to the distal end is longer than a vertical length D2 which is the thickness of the movable gear 220. The elastic force 260 of the elastic body is applied until the rack gear portion 211 of the fixed gear 210 and the brake gear portion 221 of the movable gear 220 are engaged with each other, not being directly supplied to the movable gear 220.

That is, in the embodiment of the steering lever tilting device 100 according to the present invention, when the fixed gear 210 and the movable gear 220 are separated from each other, elasticity is provided by the elastic body 260. The elastic force of the elastic body 260 is not directly applied to the movable gear 220 when the elastic body 210 and the movable gear 220 contact each other, so that so-called "teeth on teeth" so that machine noise can be minimized for tilting during the operation of the joystick 140, thereby preventing deterioration of emotional quality of consumers.

Fig. 8 is a partial perspective view of a steering column tilting device according to another embodiment of the present invention. Fig. 9 and 10 are views showing a state in which a fixed gear and a moving gear are engaged with one side surface and the other side surface, and fig. 11 is a perspective view bracket showing a state in which the fixed gear is engaged with an inclination in the configuration of fig. 1.

In the case of the steering lever tilting device according to the embodiment of the present invention shown in fig. 1 to 7, when the tilting groove 213 and the tilting shaft 230 are made of a rigid material, noise and abrasion occur due to impact and are transmitted to a user, which may cause a problem of deterioration of emotional quality of a product.

The steering lever tilting device according to another embodiment of the present invention includes

noise prevention dampers

160A and 160B contacting both ends of the tilting groove 213 with the tilting shaft 230 to solve the problems according to the above-described embodiments.

In fig. 8, the first and

second side portions

131 and 132 are provided with tilt shaft mounting holes (not shown) through which one end and the other end of the tilt shaft 230 are inserted, which may be formed (135). Specifically, the fixed gear 210 of the holding force maintaining member 200 is pressed into the tilt shaft mounting hole 135 of the first side portion 131.

In this case, the holding force maintaining member 200 couples the other end of the tilting shaft 230 of the tilting shaft accessory 135 extending through the first side portion 131, and when the joystick 140 is operated, and serves to enable or disable the tilting joystick tube housing and the fixed gear 210 and the movable gear 220 to be in contact with or separated from each other.

A fixing member 180 protruding from the inner end of the tilting axis attachment 135 is formed in an edge of the tilting groove 213 corresponding to the surface of the fixed gear 210 contacting the first side portion 131 do. A pair of fixing parts 180 are provided at both longitudinal ends of the inclined groove 213 in the longitudinal direction, and the fixing member 180 is press-fitted into the inclined shaft mounting part 135 such that the fixing member 180 is fixedly coupled to the first side part 131 together with the fixing

protrusions

170A and 170B formed on the same surface of the movable gear 220.

According to the present embodiment, the

noise prevention dampers

160A and 160B are disposed at both ends of the tilting groove 213 to limit the tilting distance, while it can prevent noise from being generated when the tilting shaft 230 is in contact with the tilting shaft 230.

More specifically, coupling parts 161,163A, and 163B may be formed at both ends of the inclined groove 213 to tightly couple the

noise preventing dampers

160A and 160B.

The coupling ports 161,163A and 163B are provided with a matching portion 161 in which a portion of the

noise prevention dampers

160A and 160B is installed, and the latching

projections

163A and 163B lock the

noise prevention dampers

160A and 160B. . & Lt L; . The latching

projections

163A and 163B may be portions extending a predetermined length in a direction orthogonal to the longitudinal direction of the inclined groove 213 described above.

The matching portion 161 is formed in a shape corresponding to a portion of the

noise prevention dampers

160A and 160B, and a portion of the

noise prevention dampers

160A and 160B is inserted into the matching portion 161, and the remaining portions of the

noise prevention dampers

160A and 160B are overlapped within opposite ends of the inclined groove 213.

The latching

projections

163A and 163B protrude to extend toward the

noise prevention dampers

160A and 160B held in the mating portion 161. The

noise prevention dampers

160A and 160B have at least one engaging

groove

162A and 162B, and a terminal 162B into which the engaging

protrusions

163A and 163B are inserted may be formed.

When the latching

projections

163A and 163B are inserted into the locking

groove grooves

162A and 162B and the

noise prevention dampers

160A and 160B are sandwiched therebetween, the movement of the deflection groove 213 in the longitudinal direction is restricted.

The damper holes 164 may be formed in the

noise prevention dampers

160A and 160B so that the impact transmitted from the tilt shaft 230 can be easily absorbed when the tilt shaft 230 is in contact. The shock-absorbing holes 164 may be formed through the

noise prevention dampers

160A and 160B perpendicularly to the longitudinal direction of the inclined grooves 213. The shock absorbing hole 164 serves to induce the shape deformation of the noise

prevention shock absorber

160A and 160B, which are in contact with the tilt shaft 230, thereby contributing to more shock absorbing function.

The

noise prevention dampers

160A and 160B having the above-described structure are made of a rubber material made of an elastic material that can be tightly fitted into the fitting portion 161 and when the tilt shaft 230 is in contact with the tilt shaft 230.

However, it is not absolutely necessary that the

noise prevention dampers

160A and 160B be coupled to the fixed gear 210 in an interference fit manner. When the fixed gear 210 is manufactured as a metal mold.

According to the present embodiment, at least one through hole 121 may be formed in the tilting

brackets

131 and 132 through the first side portion 131. The at least one through-hole 121 is a portion for mediating engagement with the fixed gear 210, and is a portion into which fixing

protrusions

170A and 170B formed in the fixed gear 210 described later are inserted.

The fixed gear 210 is provided with at least one fixing

projection

170A and 170B which is inserted into the through-hole 121 from the outside of the first side portion 131 and whose front end portion is exposed to the inner side surface side portion 131 of the first side portion 131, possibly formed.

The fixing

protrusions

170A and 170B exposed to the inner side surface of the first side portion 131 are firmly fixed such that the fixed gear 210 fixed on the outer surface of the first side portion 131 is caught by the top end portion thereof.

However, it should be noted that the fixed gear 210 is not necessarily fixed to the outer side surface of the first side portion 131 in a riveting manner, and a possible coupling method, such as a nut coupling method, is not excluded.

According to the tilting apparatus 100 of the steering lever of the embodiment of the present invention configured as above, the fixing-force maintaining device 200 having the fixed gear 210 and the movable gear 220 can be moved in the first side portion 131 in a simple pressing manner, which can reduce the number of components and simplify the assembly process.

Fig. 12 is a perspective view illustrating a tilting apparatus 100 of a steering lever according to another embodiment of the present invention, and fig. 13 is a perspective view illustrating a fixed gear and a movable gear in the structure of fig. 1.

In comparison with the tilting device 100 of the steering lever according to another embodiment of the present invention and the above-described and other embodiments of the present invention, the conventional embodiment includes the rack gear portion 211 and the brake gear portion 221 movable gear 220 having a triangular vertical cross section (see fig. 4 and 9), and in another embodiment of the present invention, the rack gear portion 211 and the brake gear portion 221 are formed to have a rectangular vertical cross section (see fig. 13).

The rack gear portion 211 and the brake gear portion 221 of the embodiment of the present invention and the brake gear portion 221 of other embodiments have a good feeling of engagement when engaged with each other. The rack and pinion part 211 and the brake pinion part 221 of other embodiments of the present invention have rectangular vertical cross-sectional shapes that are easy to process.

The operation of the steering lever tilting device 100 according to another embodiment of the present invention will be briefly described below.

First, when the user rotates the joystick 140 to tilt the steering lever, the tilt shaft 230 linearly moves in the longitudinal direction, and the fixed gear 210 and the movable gear 220 are disengaged. The movable gear 220 is connected to the other end of the tilt shaft 230 to rotate the tilt shaft 230. Is fixed to the outer surface of the first side portion 131 by pressing the tilting shaft 230. The gears are disengaged.

Then, the user applies a predetermined tilting operation force to the steering handle to tilt the wand housing according to his/her body shape. At this time, by providing the

noise prevention dampers

160A and 160B at both ends of the tilting groove 213, the generation of the tilting operation noise is prevented even if the user excessively applies the tilting operation force to the steering handle.

As described above, after performing the tilting operation, the user completes the operation by rotating the lever in the opposite direction so that the gear engagement portions 153 of the fixed gear 210 and the movable gear 220 are gear-engaged with each other.

In some cases, the assembler presents another embodiment in which the intermeshing of the fixed gear 210 and the movable gear 220 and the occurrence of the tooth-to-tooth phenomenon are considered. It should also be understood that various embodiments may be selected.

In the above, embodiments of the steering lever tilting device according to the present invention are described in detail with reference to the accompanying drawings. However, it is to be understood that the embodiments of the present invention are not necessarily limited to the above-described embodiments, and various modifications and equivalents may be available to those skilled in the art to which the present invention pertains. It is therefore to be understood that the true scope of the invention is defined by the appended claims.

Industrial applicability

According to the present invention, when the position of the tilt bracket is adjusted by operating the joystick, not only the position adjustment property is smooth, but also the occurrence of mechanical friction sound can be prevented, the occurrence of operation noise during the tilt operation is suppressed, and a steering lever tilt apparatus can be manufactured which can simplify the assembling process of the holding force holding member with respect to the tilt bracket.

Claims

1. A mounting bracket for securing the rod tube housing,

wherein the steering rod tube is mounted to a fixed portion of the vehicle;

a tilt bracket coupled to the steering column tube to allow the steering column tube housing to tilt up and down relative to the mounting bracket when the joystick is operated;

one end of the tilting shaft is connected to the joystick and disposed outside of the second side of the tilting bracket, and the other end of the tilting shaft passes through the second side and extends outward through the first side opposite to the second side, and;

the fixed gear and the movable gear are coupled to the first side portion and coupled to the other end portion of the tilting shaft extending through the first side portion such that the tilting bracket is operated to tilt when the joystick is operated;

wherein the fixed gear is fixed to an outer side of the first side portion of the tilt bracket, and the movable gear is rotatably provided with respect to a rotation shaft provided on the fixed gear and movably provided along the rotation shaft;

wherein the fixed gear is formed with an inclined groove into which an inclined shaft is inserted, and the upward tilting and downward tilting operations are performed in a sliding direction of the inclined shaft,

the movable gear is formed with an elliptical inclined shaft through hole through which the inclined shaft passes,

a holding member for holding the above operation:

a Bush tube penetrating the inclined groove and having a step gap to fill the through hole of the inclined shaft;

the tilting device of the steering rod pipe further comprises an elastic body for providing elasticity for the Bush pipe.

2. The mounting bracket as set forth in claim 1,

in the above-mentioned bush tube, the inside of the tube,

when the portion having the larger outer diameter is referred to as a first end and the portion having the smaller outer diameter is referred to as a second end according to the step difference, the second end is inserted into the through-hole of the tilt shaft, and therefore, the tilting means of the steering rod tube is formed to be larger than the minimum diameter of the through-hole of the tilt shaft.

3. The mounting bracket as set forth in claim 1,

in the above-mentioned bush tube, the inside of the tube,

when the portion having the larger outer diameter is referred to as a first end and the portion having the smaller outer diameter is referred to as a second end according to the step difference, the second end portion is longer than the thickness of the movable gear of the tilting device of the steering column pipe.

4. The mounting bracket as set forth in claim 1,

for the above-mentioned movable gear

When the fixed gear rotates in the direction opposite to the rotating direction of the fixed gear, the step difference of the Bush tube is blocked,

the tilting device of the steering rod pipe has a step difference and does not block the bushy pipe when it rotates in a direction contacting the fixed gear.

5. The mounting bracket as set forth in claim 1,

6. The mounting bracket as set forth in claim 1,

the other end of the tilting shaft extended through the movable gear is coupled to the outside of the movable gear through a predetermined coupling means,

the above-mentioned predetermined coupling means is provided with a ball washer housing fixed to the tilting shaft on the tilting shaft, and the tilting means of the steering rod tube includes a ball washer in surface contact with the ball washer housing, into which the ball washer is inserted.

7. The mounting bracket as set forth in claim 1,

the fixed gear is formed with an inclined groove into which the inclined shaft is inserted, and is inclined upward and downward in the direction of the sliding motion of the inclined shaft,

at both ends of the tilting groove, the tilting device of the steering rod tube has noise prevention dampers in contact with the tilting shaft.

8. The mounting bracket as set forth in claim 7,

at both ends of the tilting groove, the tilting means of the steering column tube is provided with coupling openings for detachably mounting noise-preventing dampers.

9. The mounting bracket as set forth in claim 7,

wherein at least one locking protrusion is provided at both ends of the inclined groove so as to extend to the inside of the coupling hole,

wherein the noise prevention damper is provided with a latching groove engaged with the latching protrusion, and its movement in the longitudinal direction in the inclined groove is restricted.

10. The mounting bracket as set forth in claim 9,

11. The mounting bracket as set forth in claim 9,

12. The mounting bracket as set forth in claim 7,

at least one through-hole is formed through the first side portion,

wherein the fixed gear is provided with at least one fixing protrusion inserted into the through hole at an outer side surface of the first side portion, and has a tip portion exposed to an inner side surface of the first side portion.

13. The mounting bracket as set forth in claim 12,

wherein the fixing projection is engaged together by caulking with a front end portion exposed on the inner side surface of the first side portion.

14. The mounting bracket as set forth in claim 1,

wherein the fixed gear is provided with a rack and pinion portion engaged with the contact surface of the movable gear,

wherein the movable gear is formed using a brake gear portion engaged with a rack gear portion,

wherein the rack gear portion and the brake gear portion are processed into a shape of a vertical cross section of a triangle or a quadrangle.